Text

Inservice Testing Program Description for the Fourth Ten-Year Interval
	ML20303A260
Person / Time
Site:	South Texas
Issue date:	10/28/2020
From:	Georgeson C; South Texas
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	NOC-AE-20003765, STI:35081345
	Download: ML20303A260 (137)
	v • d • e

Nuclear Operating Company South Texas Project Electric Generating Slallon P.O. Bo.\ 289 Wadsworlh. Texas 77483 October 28, 2020 NOC-AE-20003765 STI:35081345 10CFR50.55a ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 South Texas Project Units 1 and 2 Docket Nos. STN 50-498 and STN 50-499 Inservice Testing Prociram Description for the Fourth Ten-Year Interval Pursuant to 10 CFR 50.55a(f), STP Nuclear Operating Company submits the South Texas Project (STP) Inservice Testing (1ST) program for the fourth ten-year interval, applicable to testing of American Society of Mechanical Engineers (ASME) Code Class 1, 2, and 3 pumps and valves.

10 CFR 50.55a(f) requires that tests conducted during successive 120-month intervals comply with the requirements of the latest edition and addenda of the ASME Operations and Maintenance Code of Nuclear Power Plants (OM Code) that is endorsed by the U.S. Nuclear Regulatory Commission (NRC) 18 months prior to the start of the interval. This 1ST program has been developed in accordance with the requirements of the 2012 Edition of the OM Code. STP Units 1 and 2 will also comply with the conditions and modification of requirements stated in 10 CFR 50.55a(b)(3).

The 1ST program complies with ASME OM Code requirements, requiring no NRC approval for implementation, and is provided for information only.

There are no commitments in this letter.

If there are any questions regarding this matter, please contact N. Boehmisch at (361) 972-8172 or me at (361) 972-7806.

'ffK^9^.

Christopher Gorgeson General Manager, Engineering nb ec:

Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 1600 E. Lamar Boulevard Arlington, TX 76011-4511

Attachment:

Inservice Testing Program Unit 1 and 2 Pump and Valve Inservice Test Plan Fourth Ten-Year Interval

South Texas Project Electric Generating Station Revision 18 P.O. Box 289 September 25, 2020 Wadsworth, TX 77483 STI: 35064288 19-291-174 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION INSERVICE TESTING PROGRAM UNIT 1 AND 2 PUMP AND VALVE INSERVICE TEST PLAN FOURTH TEN-YEAR INTERVAL SOUTH TEXAS PROJECT UNITS 1 AND 2 DOCKET NOS. STN 50-498, STN 50-499 FACILITY OPERATING LICENSE NOS. NPF-76/80 COMMERCIAL OPERATING DATES Unit 1: 8/25/1988 Unit 2: 6/19/1989 FOURTH TEN-YEAR INTERVAL DATES 9/25/2020 THROUGH 9/24/2030 Prepared by: James Heil 08/31/2020 IST Program Coordinator Date Reviewed by: Clayton Bonnot 09/03/2020 Testing/Programs Supervisor Date Approved by: Eric Stephens 09/21/2020 Strategic Engineering Manager Date

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 2 of 136 TABLE OF CONTENTS

1. 0 INTRODUCTION ............................................................................................................................4 1.1 Program Plan........................................................................................................................4 1.2 Bases Document....................................................................................................................4 1.3 Implementing Procedures ...................................................................................................5

2. 0 SCOPE ..............................................................................................................................................5 2.1 Pump Exclusions ..................................................................................................................6 2.2 Valve Exemptions .................................................................................................................6 2.3 Safe Shutdown Condition ....................................................................................................7 2.4 Special Treatment Exemption for IST Program (ML012040470) ...................................7

3. 0 METHOD OF EVALUATING COMPONENTS .........................................................................7

4. 0 INSERVICE TESTING OF PUMPS .............................................................................................8 4.1 Pump Reference Values .......................................................................................................9 4.2 Inservice Tests ......................................................................................................................9 4.3 Pump Relief Requests ..........................................................................................................9

5. 0 INSERVICE TESTING OF VALVES .........................................................................................10 5.1 Valve Categories .................................................................................................................11 5.2 Active/Passive Status ..........................................................................................................11 5.3 Reference Values ................................................................................................................11 5.4 Category A and B Required Tests ....................................................................................12 5.4.1 Valve Position Verification ....................................................................................12 5.4.2 Valve Exercise Test ................................................................................................12 5.4.3 Stroke Time Measurement ....................................................................................13 5.4.4 Fail-Safe Test ..........................................................................................................14 5.4.5 Seat Leakage Rate Test ..........................................................................................15 5.5 Category C Required Tests ...............................................................................................15 5.5.1 Check Valve Exercise Test ....................................................................................15 5.5.2 Check Valve Exercise Test Using System Flow ...................................................16 5.5.3 Check Valve Exercise Test Using A Non-intrusive Testing Program ...............17 5.5.4 Check Valve Exercise Test Using A Disassembly and Inspection Program .....17 5.5.5 Check Valve Condition Monitoring .....................................................................18 5.5.6 Safety and Relief Valve Required Tests ...............................................................18

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 3 of 136 5.6 Justifications and Relief Requests ....................................................................................20 5.6.1 Cold Shutdown Justification (CSJ) ......................................................................20 5.6.2 Refueling Outage Justification (ROJ) ..................................................................20 5.6.3 Condition Monitoring Plans ..................................................................................21 5.6.4 Valve Relief Requests .............................................................................................21 5.7 Valve List Symbols .............................................................................................................22

6. 0 PROGRAM IMPLEMENTATION .............................................................................................24 6.1 Testing Skid Mounted Components .................................................................................24 6.2 Valve Normal Position .......................................................................................................24 6.3 Unit 1 and Unit 2 Designation ...........................................................................................25 6.4 Corrective Actions ..............................................................................................................25

7. 0 PROGRAM CONFIGURATION CONTROL ...........................................................................25

8. 0 PROGRAM ATTACHMENTS ....................................................................................................25 8.1 Attachment 1, Unit 1 ISTB Tested Pump List.................................................................26 8.2 Attachment 2, Unit 2 ISTB Tested Pump List.................................................................28 8.3 Attachment 3, ML012040470 Exempt Pump List ...........................................................30 8.4 Attachment 4, ISTB Skid Tested Pump List ...................................................................31 8.5 Attachment 5, Pump Relief Requests ...............................................................................32 8.6 Attachment 6, Unit 1 ISTC Tested Valve List .................................................................41 8.7 Attachment 7, Unit 2 ISTC Tested Valve List .................................................................60 8.8 Attachment 8, Unit 1 ML012040470 Exempt Valve List ................................................79 8.9 Attachment 9, Unit 1 ML012040470 Exempt Valve List ................................................85 8.10 Attachment 10, Unit 1 ISTC Skid Tested Valve List ......................................................91 8.11 Attachment 11, Unit 2 ISTC Skid Tested Valve List ......................................................92 8.12 Attachment 12, Cold Shutdown Justifications ................................................................93 8.13 Attachment 13, Refueling Outage Justifications ...........................................................105 8.14 Attachment 14, Condition Monitoring Plans ................................................................108

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 4 of 136

1.0 INTRODUCTION

Title 10, Part 50.55a of the Code of Federal Regulations and the South Texas Project Technical Specification 4.0.5 invoke, by reference, the requirement for inservice testing (IST) of pumps and valves per Operations and Maintenance Code for Nuclear Power Plants (OM Code). Part 50.55a establishes the requirements that each nuclear power plant must develop and implement an inservice inspection and testing program. Specifically, 10 CFR 50.55a, paragraph (f) states that all Code class pumps and valves shall be designed and provided with access to enable the performance of inservice testing. Inservice tests are used to verify operational readiness of pumps and valves whose function is required for safety. The tests conducted during successive 120-month intervals must comply with the requirements of the latest edition and addenda of the Code that is endorsed by the NRC 18 months prior to the start of the interval.

To ensure compliance with the latest edition and addenda of the Code it is necessary to revise the IST Program implemented at STP. Commercial operation for Unit 1 began in August 1988. STP has elected to upgrade both units simultaneously. STP was granted an extension to the beginning of the second 10-year test interval for the express purpose of adopting a risk-informed IST Plan. The second 10-year update was implemented by December 1, 2001 (See ST-AE-NOC-000358 dated 3/15/99). The IST Exemption allowance was implemented upon NRC approval. The NRC approved the Exemption via SER dated 08/03/01 (ML012040470).

By taking the maximum extensions allowed by the Code (IWA-2430, 1983 Edition) and subsequently aligning Unit 2, the third 10-year interval commenced on September 25 th , 2010.

The fourth 10-year interval started 9/25/2020. The edition and addenda of the Code for the IST Program for the fourth 10-year interval is the 2012 Edition of the OM Code, Code for Operation and Maintenance of Nuclear Power Plants.

The Pump and Valve Program consists of three parts; the Program Plan, Program Bases Document and Program Implementing Procedures.

1.1 Program Plan Since the period of time that the requirement for inservice testing was first incorporated into the Code of Federal Regulations, the NRC, ASME, and the nuclear industry have provided additional interpretations to the Code requirements. These interpretations have been documented through various mechanisms such as Code cases, generic letters, program review meetings, site inspections, and others. It is the intent of the Program Plan to:

Establish a set criteria and philosophy for determining the Program Scope, and

Evaluate each of the plant systems and related components in a consistent manner to identify which components should be included in the testing program and to identify the extent of testing required for each component.

1.2 Bases Document The IST Bases Document provides a method and location for recording the results of evaluations conducted to determine if a pump or valve within a Class 1, 2, or 3 boundary should be included in or excluded from the IST Program. Additionally, it documents the basis for inclusion or exclusion of that component. The Bases Document should provide sufficient information about the above evaluations to ensure it will not be necessary to re-evaluate the same components at a later date.

A change in plant configuration or code requirements may require that the component be evaluated for impact on its status within the IST Program.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 5 of 136 The scope of the IST Bases Document is a direct reflection of the IST Program Plan. It should include those components that are required to perform a specific function in shutting down a reactor to the safe shutdown condition, in maintaining the safe shutdown condition, or in mitigating the consequences of an accident.

Refer to the Program Bases Document for a complete description of the scope and content of the Bases Document.

1.3 Implementing Procedures Program inservice tests required by the Code are implemented using the Surveillance Test Program or the Preventive Maintenance Program. As a result of the performed tests, any identified corrective actions and subsequent retests are made per the requirements of the effective OM Code, Technical Specifications, and the Section XI Repair and Replacement Program. The Condition Reporting (CR) process at South Texas Project provides a method to document material deficiencies and engineering evaluations required to comply with the ASME Code. Work orders initiated by the CR process will be used to implement corrective maintenance on valves and pumps identified for Inservice Testing and will allow for recording and tracking component history.

2.0 SCOPE The scope of the IST Program includes those pumps that are provided with an emergency power source. It also includes those pumps and valves that are required to perform a specific function in shutting down a reactor to the safe shutdown condition, in maintaining the safe shutdown condition, or in mitigating the consequences of an accident and pressure relief devices that protect systems or portions of systems that perform one or more of these three functions. In addition to the above OM Code requirements, guidance established in NUREG 1482, Rev.3 was also used, as a reference for determining which components should be included in the IST Program.

NUREG-1482, Rev.3, Table 2.1, provides a list of systems that are typically included in IST Programs but provides little guidance on the criteria for determining which components are safety-related. The IST Program scope should not be limited solely to those components required to mitigate the consequences of the postulated design basis accidents defined in Chapter 15, Accident Analysis, of the UFSAR. Although the required IST Program scope has not been precisely delineated, the NRC has stated their position that the sole criteria for component selection should not be limited to design basis accidents. These accidents are the worst- c a s e scenarios which do not define all the component response requirements necessary to prevent core damage and protect the health and safety of the public.

This program was developed to encompass system safety requirements defined in 10 CFR 50 as well as component functions required in response to the abnormal operational transients and accidents defined in the UFSAR. The program is not limited to the postulated accidents of Chapter 15. The UFSAR, Technical Specifications, and related design basis documents are the primary references used to determine which components are required to perform specific functions related to the spectrum of postulated accidents. Although several other plant source documents identify various components that may be important to plant safety or are to be operated in conjunction with recovery from an accident, unless specific credit is taken or implied for a pump or valve, the component need not be included in the IST Program.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 6 of 136 As part of the changes associated with the implementation of the 2012 Edition of the OM Code, t h e NRC imposed conditions associated with the approval of the 2012 Edition, as well as revisions to existing sections that have affected the STP IST Plan. The NRC has revised the Code of Federal Regulations, 10 CFR 50.55a(f)(4), (f)(4)(i), and (f)(4)(ii) which previously required systems and components which are classified as ASME Code Class 1, 2 and 3 to meet the requirements set forth in the edition and addenda of ASME Code for Operation and Maintenance of Nuclear Power Plants (OM Code) incorporated by reference in 10 CFR 50.55a(a)(1)(iv)(C). In the proposed rule, the NRC included references to the OM Code in:

50.55a(f)(3)(iii)(A), Class 1 Pumps and Valves: First Provision 50.55a(f)(3)(iii)(B), Class 1 Pumps and Valves: Second Provision 50.55a(f)(3)(iv)(A), Class 2 and 3 Pumps and Valves: First Provision 50.55a(f)(3)(iv)(B): Class 2 and 3 Pumps and Valves: Second Provision Revision aligned the regulatory language with the current ASME OM Code used for IST programs. Because 10 CFR 50.55a(f)(3)(iii) and (iv) specifically reference Class 1, 2, or 3 pumps and valves, the proposed changes to these paragraphs referencing the OM Code are unnecessary and have not been adopted in this final rule. The use of an augmented IST program is acceptable. The NRC has removed references to ISI Class 1, 2 and 3 from Rulemaking regarding the scope of OM and now safety functions have to be addressed regardless of Code Class. The Fourth 10 Year IST Interval will implement the 2012 Edition of the OM Code and the 10 CFR 50.55a Conditions issued in August of 2018 for the use of this Edition of the OM Code. This document will outline those requirements and how they will affect the IST Program at South Texas Project.

2.1 Pump Exclusions OM Code Subsection ISTB excludes the following from the IST Program:

Pump drivers, except where the pump and the driver form an integral unit and the pump bearings are in the driver, and

Pumps that are supplied with emergency power solely for operating convenience.

Skid-mounted pumps that are tested as part of the major component and are justified by the Owner to be adequately tested.

STP also allows exemptions using UFSAR Chapter 13.7, Risk-Informed Special Treatment Requirements. (ML012040470).

2.2 Valve Exemptions OM Code Subsection ISTC exempts the following from the IST Program:

Valves used only for:

operating convenience (such as vents, drains, instrument and test valves),

system control (such as pressure regulating valves),

system or component maintenance, and

skid-mounted valves that are tested as part of the major component and are justified by the Owner to be adequately tested.

External control and protection systems responsible for sensing plant conditions and providing signals for valve operation STP also allows exemptions using UFSAR Chapter 13.7, Risk-Informed Special Treatment Requirements. (ML012040470).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 7 of 136 2.3 Safe Shutdown Condition In NUREG-1482, Rev.3, the NRC recognizes that some plants are licensed for a safe shutdown condition of hot standby or hot shutdown rather than cold shutdown. In some instances, the equipment needed to achieve cold shutdown may not be classified as safety related or subject to a Quality Assurance Program. The NRC has acknowledged that the scope may be limited to those components credited to achieve the safe shutdown condition in the plant safety analyses. If the plant was not licensed to cold shutdown, then the program should identify that the plant is not designed to the safe shutdown condition of cold shutdown and may limit the inclusion of components accordingly. The South Texas Project is licensed on the basis that a safe shutdown is the hot standby condition.

UFSAR Section 5.4 demonstrates that STP has the capability to achieve cold shutdown using only safety grade equipment. However, this capability and the equipment functions to bring the plant to cold shutdown are considered to be outside the scope of the IST program. Additionally, while the specific components needed to bring the plant to cold shutdown have been designed and installed as ASME equipment with applicable quality assurance requirements, only those which have an accident mitigation function have been included in the present IST program.

2.4 Special Treatment Exemption for IST Program (ML012040470)

STP has been granted an exemption from Inservice Testing Requirements of the ASME OM Code for GQA low risk and non-risk significant components. Once these pumps and valves were removed from the regulatory IST program, reasonable confidence must be maintained that these components will continue to satisfy their design functional requirements when demanded. A reference to the reasonable confidence evaluation has been included in the IST Bases Document for each applicable pump or valve. Additions to the IST Scope, based on changes in the risk significance ranking, will be controlled by the Comprehensive Risk Management and Inservice Testing Program procedure at STP.

Scope additions will be added to the IST Program in a timely manner and testing requirements will commence from the time the component is added to the program.

3.0 METHOD OF EVALUATING COMPONENTS The UFSAR, Technical Specifications, and the system design basis documents were reviewed to determine which systems include components that encompass system safety requirements defined in 10 CFR 50 as well as component functions required in response to the abnormal operational transients and accidents defined in the UFSAR. This review was not limited to the postulated accidents of Chapter 15.

Each system was reviewed in the following manner:

3.1 The Piping & Instrument Diagram (P&ID) for each system was reviewed to identify the system pumps and valves that perform a specific function in shutting down a reactor to the safe shutdown condition, maintaining the safe shutdown condition, or in mitigating the consequences of an accident.

3.2 Each component was reviewed against the ASME OM Code, IST exempted criteria and UFSAR Chapter 13.7, Risk-Informed Special Treatment Requirements.

(ML012040470).

3.3 If exempted, the Bases Document was reviewed to ensure that the component was included in the exclusion list and that the basis for exclusion was correct.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 8 of 136 3.4 If not exempted, the UFSAR and the applicable system DBD were reviewed to determine the safety function performed by the component in shutting down the reactor to the safe shutdown condition, maintaining the safe shutdown condition, or in mitigating the consequences of an accident. The following information was then verified to be correct in the IST Program Plan and Bases Document:

a. Component specific data such as valve category, code class, valve type, P&ID coordinates, etc.

b. Safety function performed by the component and its bases,

c. Code required tests to assess the operational readiness of the component to ensure it can perform its intended function,

d. Applicable cold shutdown justifications, refueling outage justifications, or relief requests, and

e. References used to develop the above items.

4.0 INSERVICE TESTING OF PUMPS The IST Pump List identifies each pump to be tested in accordance with the requirements of the OM Code. The IST Pump List, Attachments 1 and 2 to the Program Plan, is provided in a table format and contains the following specific information about each pump:

Pump name and TPNS number

ASME Code class

Pump Group (A, or B)

P&ID grid coordinates

Inservice tests required (A, B, or Comprehensive)

Inservice test parameters

Test interval

Applicable relief requests

Applicable remarks All pumps operate at greater than or equal to 600 RPM (GE600) and operate at fixed speed except for the variable speed turbine driven auxiliary feedwater pumps.

Pump test parameters will be abbreviated as follows:

N Speed dP Differential Pressure P Discharge Pressure Q Flow Rate V Vibration Pump test types will be abbreviated as follows:

A Quarterly Group A Test. If quarterly full flow testing is possible, then the Group A test may be performed per Code Case OMN-18 and Relief Request PRR-01.

B Quarterly Group B Test CPT Biennial Comprehensive Pump Test App-V Appendix V Pump Test

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 9 of 136 4.1 Pump Reference Values Pump reference values shall be:

Determined from the results of pre-service tests or from the results of the first inservice test following maintenance that could affect the pump reference values.

Established only when the pump is known to be operating acceptably.

Established at a point(s) of operation (reference point) readily duplicated during subsequent tests.

Established in a region(s) of relatively stable pump flow.

Established within +/-20% of design flow when performing a Comprehensive test OR Group A test, in lieu of a Comprehensive test per the guidelines provided in Code Case OMN-18 and relief request PRR-01.

When a reference value or set of values may have been affected by repair, replacement, or routine servicing of a pump, a new reference value or set of values are determined or the previous value reconfirmed by an Inservice test run before declaring the pump operable.

Deviations between the previous and new set of reference values are evaluated and verification that the new values represent acceptable pump operation are placed in the record of tests.

If it is necessary or desirable, for some reason other than the above paragraph, to establish an additional set of reference values, an Inservice test is run at the conditions of an existing set of reference values and the results analyzed. If operation is acceptable, an additional set of reference values may be determined from the preservice test curve established for the pump. A test is run to verify the new reference values before their implementation. The reasons for establishing a new set of reference values is justified and documented in the record of tests.

4.2 Inservice Tests Inservice tests shall be conducted with the pump operating at a specified reference point. The test parameters for the associated test shall be determined and recorded and all deviations from the reference values shall be compared to the established ranges and corrective action taken as required.

4.3 Pump Relief Requests Relief from the requirements of the OM Code shall be requested where full compliance with the Code will not be achieved. Relief requests are submitted to the NRC for approval pursuant to the requirements of 10 CFR 50.55a. Guidelines for preparation of relief requests are provided in NEI White Paper, Entitled Standard Format for Requests from Commercial Reactor Licensees Pursuant to 10 CFR 50.55a, Rev. 1, dated June 2004. These guidelines are available as ADAMS Accession # ML070100400.

Relief is requested in accordance with:

10 CFR 50.55a(f)(6)(i), Impractical IST Requirements: Granting of relief

10 CFR 50.55a(h)(3)(z), Alternatives to codes and standards requirements

10 CFR 50.55a(h)(3)(z)(1), Acceptable level of quality and safety or

10 CFR 50.55a(h)(3)(z)(2), Hardship without a compensating increase in quality and safety

10 CFR 50.55a(f)(5)(iii), Inservice Testing Impracticality Notification

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 10 of 136 The following information should be provided in the request for relief:

ASME Code Component(s) Affected,

Component Function,

Applicable Code Edition and Addenda

Applicable Code Requirement,

Reason for Request

Proposed Alternative and Basis for Use,

Duration of Proposed Alternative, and

Precedents Relief requests are to be numbered as follows:

PRR-xx, where PRR is the acronym for pump relief request and xx is the sequential number.

Attachment 5 contains the relief requests applicable to the IST Pump List.

Relief Request PRR-02, Code Case OMN-16 Revision 2, Use of a Pump Curve for Testing was withdrawn on May 7, 2020 following issuance of Regulatory Guide 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code Revision 3 on April 15, 2020, which approved used of the Code Case without conditions. (Ref. 19-291-17) 5.0 INSERVICE TESTING OF VALVES The IST Valve List identifies each valve to be tested in accordance with the requirements of the OM Code. The IST Valve List, Attachments 6 and 7 to the Program Plan, is provided in a table format and contains the following specific information about each valve:

The P&ID that shows the associated system valves

Valve ID (TPNS number) for each valve to be tested

ASME code class for the valve

P&ID grid coordinates

IST valve category and designation of its active/passive status

Valve size

Type of valve

Valve actuator

Valve position during normal plant operation

Fail-safe position of the valve

Code required tests

Applicable c o l d shutdown justifications, refueling outage justifications, and relief requests

Procedures that perform the tests

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 11 of 136 5.1 Valve Categories Category A - valves for which seat leakage is limited to a specific maximum amount in the closed position for fulfillment of their required safety function.

Category B - valves for which seat leakage in the closed position is inconsequential for fulfillment of the required safety function.

Category C - valves that are self-actuating in response to some system characteristic, such as pressure (relief valves) or flow direction (check valves) for fulfillment of the required safety function.

Category D - valves that are actuated by an energy source capable of only one operation, such as rupture disks or explosively actuated valves.

Valves within the scope of the OM Code shall be placed in one or more of the above valve categories. When more than one distinguishing category characteristic is applicable, all requirements of each individual category are applicable, although duplication or repetition of common testing requirements is not necessary.

5.2 Active/Passive Status Active Valves - valves that are required to change obturator position to accomplish their required safety function.

Passive Valves - valves that maintain obturator position and are not required to change obturator position to accomplish their required safety function.

A valves status may vary based on the operating/safety function of the valve. Valves that are temporarily removed from service or removed from its safety position for a short period of time, such as manually opening a sample valve to take a sample, while maintaining administrative control over the valve should not be considered active valves.

The position of passive valves may be changed without imposing IST requirements on the valve during operating plant modes that do not require a passive valve to be maintained in its safety position. Valves that are routinely repositioned during power operation shall be categorized as an active valve. Valves that are repositioned to create a new valve alignment may require an evaluation to consider the impact on the IST Program prior to alignment to ensure operational readiness. These valves should be evaluated on a case by case basis.

5.3 Reference Values Valve reference values shall be determined from the results of preservice tests or from the results of the first inservice test. These tests shall be performed under conditions as near as possible to those expected during subsequent inservice testing. Reference values shall be established only when the valve is known to be operating acceptably. If the particular parameter being measured can be significantly influenced by other related conditions, then these conditions shall be analyzed.

When a valve or its control system has been replaced, repaired, or has undergone routine maintenance that could affect the valves performance, a new reference value shall be determined or the previous value reconfirmed by an inservice test run before it is returned to service or immediately if it is not removed from service. Deviations between the previous and new set of reference values shall be evaluated and verification that the new values represent acceptable operation shall be placed in the record of tests.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 12 of 136 If it is necessary or desirable, for some reason other than the above paragraph, to establish an additional set of reference values, an inservice test shall be run at the conditions of an existing set of reference values, or if impractical, at the conditions for which the new reference values are required, and the results analyzed. If operation is acceptable, a second test shall be performed under the new conditions as soon as possible and the results of the second test shall establish the additional reference values. The reasons for establishing an additional set of reference values shall be justified and documented in the record of tests.

5.4 Category A and B Required Tests 5.4.1 Valve Position Verification Valves with remote position indicators shall be observed locally at least once every 2 years (except where extended for MOVs per Appendix III) to verify that valve operation is accurately indicated. Where possible, this local observation should be supplemented by other indications such as flow or other suitable instrumentation to verify obturator position. Where local observation is not possible, other indications shall be used for verification of valve operation.

10 CFR 50.55a paragraph (b)(3)(xi) Condition states: licensees shall verify that valve operation is accurately indicated by supplementing valve position indicating lights with other indications, such as flow meters or other suitable instrumentation, to provide assurance of proper obturator position - now a requirement for all valves with indicating lights. Obturator tests (OVO and OVC) have been added to the test program to satisfy this NRC Condition imposed on ISTC-3700.

5.4.2 Valve Exercise Test Active Category A and B valves (with the exception of manual valves and MOVs, except those HSSC MOVs that can be stroked quarterly) shall be full stroke exercised nominally every 3 months during plant operation to the position required to fulfill their safety function. If full-stroke exercising during plant operation is not practical, the valve may be full-stroke exercised during cold shutdown. If it is not practical to full-stroke exercise at cold shutdown, the valve may be full-stroke exercised during refueling outages. Certain valves may be exercised or tested during specific system outage windows called Extended Allowed Outage Times (EAOT). Testing of these valves will be at a refueling cycle frequency which will ensure component operability while minimizing safety system unavailability.

Valves that are full-stroke exercised at cold shutdown shall be exercised at a cold shutdown frequency unless the period of time since the previous full-stroke exercise is less than 3 months.

Valve exercising during cold shutdown shall commence within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months of achieving cold shutdown and continue until all testing is complete or the plant is ready to return to power. For extended outages, testing need not be commenced in 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months provided all valves required to be tested during cold shutdown will be tested before plant startup; however, it is not the intent of Subsection ISTC to keep the plant in cold shutdown solely to complete cold shutdown testing. Cold shutdown justifications (CSJ) shall document the basis for deferring the required exercise test to a cold shutdown frequency.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 13 of 136 All valve testing required to be performed during a refueling outage shall be completed before returning the plant to operation. Refueling outage justifications (ROJ) shall document the basis for deferring the required exercise test to a refueling outage frequency.

Whenever valve testing is practicable during normal operations but only if train or equipment outage is of sufficient duration that a refueling cycle justification is acceptable, then with the approval of the Nuclear Regulatory Commission testing can be performed during extended allowed outages. Refueling cycle justifications (RCJ) shall document the basis for deferring the required testing to a refueling cycle frequency.

Manual Valves Manual valves within the IST program scope that perform an active safety function shall be exercised through a complete cycle at least once every 2 years. Exercise testing shall be considered acceptable if valve stem travel exhibits unrestricted movement with no abnormal resistance or binding through one complete cycle. Where practical, process parameters may be utilized to verify obturator movement. However, where process parameters are utilized to verify obturator movement it is not necessary to be performed simultaneous to manual exercising. This testing methodology is consistent with the discussion provided in NUREG-1482, Rev.3, Section 4.4.3. If a valve fails to exhibit the required change of obturator position, the valve shall immediately be declared inoperable.

The use of a valve persuader (cheater) for additional mechanical advantage will not invalidate the test, as it is recognized that larger valves may exhibit increased packing friction and/or increased friction associated with the disk to seat interface. In addition, a valve persuader may be used for personnel safety depending on a valve's service application (e.g. Main Steam).

5.4.3 Stroke Time Measurement For MOVs governed by Appendix III of the 2012 Edition of the OM Code, only the valves with design requirements associated with the TS listed specified times will be stroke time tested. These times are listed in the UFSAR (Table 16.1-1, Containment Isolation Valves). Other times may come from the UFSAR credited closure or opening of the MOVs. Any closure requirements not shown in UFSAR Table 16.1-1 will be verified during diagnostic testing of the MOV.

For power-operated valves (except MOVs), the full-stroke time shall be measured to at least the nearest second.

The acceptance criteria for the full stroke of power operated valves (except MOVs) will be in accordance with the values specified in the following paragraphs of the OM Code:

ISTC-5114, Power Operated Relief Valves

ISTC-5132, Pneumatically Operated Valves

ISTC-5142, Hydraulically Operated Valves

ISTC-5152, Solenoid-Operated Valves

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 14 of 136 10 CFR 50.55a (b)(3)(ii)(D) adds a Condition stating When applying Paragraph III-3600, "MOV Exercising Requirements," of Appendix III to the ASME OM Code, licensees shall verify that the stroke time of MOVs specified in plant technical specifications satisfies the assumptions in the plant's safety analyses, consequently, the TS will dictate the stroke time frequency. Additionally, CS and RFO justifications will no longer be required, unless a High Risk Significant MOV cannot be stroked quarterly.

Motor Operated Valve Testing requirements have been removed from ISTC and all MOV testing is performed in accordance with Appendix III. Quarterly stroke time testing has been eliminated, refer to Appendix III.

The limiting values of full stroke times of each power operated valve will be determined by multiplying the acceptance criteria percent allowable change by a factor of two. The limiting values of full stroke times shall in no case exceed any design basis stroke time value.

Rapid acting valves are valves with stroke times of two seconds or less and are exempted from the comparison to a reference value requirement of the OM Code.

Stroke times for rapid acting valves are compared to the stroke time acceptance criteria and limiting value of two seconds.

STPEGS has adopted the use of Mandatory Appendix III for Active MOVs previously in the OMN-1 program. For MOVs within the Appendix III program, stroke times and position indication will also fall under the requirement of Appendix III and 10 CFR 50.55a(b)(3)(ii)(D). Testing frequencies for the diagnostic tests, indicated as App3 in Attachments 6 and 7, are specified in 0PSP11-ZE-0006, MOV IST Margin and Test Frequency Determination.

5.4.4 Fail-Safe Test Active and passive Category A and B valves with fail-safe actuators shall be tested by observing the operation of the actuator upon loss of valve actuating power at least every 3 months during plant operation. At STP valves with fail- safe actuators are designed such that remote valve operation during the exercise test removes actuator power from the valve. This method of testing valves with fail-safe actuators is consistent with the requirements of the OM Code.

5.4.5 Seat Leakage Rate Test Active and passive Category A valves shall be seat leakage tested per the requirements of ISTC-3600 of the OM Code. Valve closure prior to seat leakage testing shall be by using the valve operator with no additional closing force applied. Valves that are identified in the UFSAR as containment isolation valves (CIV) and are subject to 10CFR50 Appendix J Type C Leakage Tests shall be listed as Category A valves and included in the IST Program. Valves that are identified in Technical Specifications as pressure isolation valves (PIV) shall be listed as Category A valves and included in the IST Program.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 15 of 136 Pressure Isolation Valves These valves provide a boundary/interface between high pressure and low-p r e s s u r e systems and shall be seat leakage tested at least once every 2 years. The seat leakage rate for PIVs shall be per the Reactor Coolant System leakage limits specified in the plant Technical Specifications.

Containment Isolation Valves Category A CIVs shall be seat leakage tested to verify their leak-tight integrity per the frequency, testing methods and leakage rate requirements of 10CFR50, Appendix J, Option B.

5.5 Category C Required Tests 5.5.1 Check Valve Exercise Test Active Category C check valves shall be exercised nominally every 3 months during plant operation per the requirements of ISTC-3522 of the OM Code. During operation at power, each check valve shall be exercised or examined in a manner that verifies obturator travel using methods provided in ISTC-5221. Check valves that have a safety function in both the open and close directions shall be exercised by initiating flow and observing that the obturator has traveled to either the full open position or to the position required to perform its intended function(s), and verify that on cessation or reversal of flow, the obturator has traveled to the seat.

Check valves that have a safety function in only the open direction shall be exercised by initiating flow and observing that the obturator has traveled either the full open position or to the position required to perform its intended function(s), and verify closure. Check valves that have a safety function in only the close direction shall be exercised by initiating flow and observing that the obturator has traveled at least the partially open position, and verify that on cessation or reversal of flow, the obturator has traveled to the seat. Observations shall be made by observing a direct indicator (e.g., a position-indicating device) or by other positive means (e.g., changes in system pressure, flow rate, level, temperature, seat leakage, testing, or nonintrusive testing results).

Valves that are full-stroke exercised at cold shutdown shall be exercised at each cold shutdown unless the period of time since the previous full-stroke exercise is less than 3 months. Valve exercising during cold shutdown shall commence within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months of achieving cold shutdown and continue until all testing is complete or the plant is ready to return to power. For extended outages, testing need not be commenced in 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months provided all valves required to be tested during cold shutdown will be tested before plant startup; however, it is not the intent of Subsection ISTC to keep the plant in cold shutdown solely to complete cold shutdown testing. Cold shutdown justifications (CSJ) shall document the basis for deferring the required exercise test to a cold shutdown frequency.

All valve testing required to be performed during a refueling outage shall be completed before returning the plant to operation. Refueling outage justifications (ROJ) shall document the basis for deferring the required exercise test to a refueling outage frequency.

Whenever valve testing is practicable during normal operations but only if train or equipment outage is of sufficient duration that a refueling cycle justification is acceptable, then with the approval of the Nuclear Regulatory Commission testing can be performed during extended allowed outages. Refueling cycle justifications (RCJ) shall document the basis for deferring the required testing to a refueling cycle frequency.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 16 of 136 5.5.2 Check Valve Exercise Test Using System Flow A check valves full-stroke exercise to the open position may be verified by passing the maximum required accident condition flow through the valve. Any flow rate less than this will be considered a partial-stroke exercise; although, partial stroke exercising is no longer a Code requirement for check valves. A valid full-stroke exercise by flow also requires that the flow through the valve be known.

Knowledge of only total flow through multiple parallel lines does not provide verification of flow rates through the individual valves and is not a valid full-stroke exercise.

The necessary valve obturator movement shall be demonstrated by exercising the valve and observing that either the obturator travels to the seat upon cessation or reversal of flow or opens to the position required to fulfill its function. Both an open and close exercise test shall be performed.

Full flow testing of a check valve is the preferred method for testing however, it may be impractical to perform for certain valves. It is possible to qualify other positive means and techniques to confirm that the valve is exercised to the position required to perform its safety function. As an alternative to full flow testing, ISTC-5221(c) provides the guidelines for implementing a sample disassembly and examination program. As stated in NUREG-1482, Rev.3, Section 4.1.2, the NRC recognizes a non-intrusive testing program as an acceptable alternative to the full flow exercise testing.

However, if the recommended alternative methods are implemented, the method used for testing and implementation must be described in the IST Program document.

5.5.3 Check Valve Exercise Test Using a Non-intrusive Testing Program Some check valves in the IST Program will be tested using non-intrusive testing techniques as an alternate method of verifying check valve full-stroke open capabilities and operational readiness at less than the accident flow rate. Non- intrusive testing techniques may be used in a sampling plan such that similar valves in the same service condition are grouped for testing purposes. The check valves in the sample program are separated into groups to include valves that are of the same design manufacturer, size, model number, and materials of construction, that have the same service condition, and that have the same valve orientation.

During the initial test of all valves within the group identified per previous paragraph, non-intrusive testing will be used to verify that the system pressures and flow conditions specified in the test procedures cause the valves to fully stroke to the required safety function position. During subsequent testing, if the system conditions are repeatable, each valve will be considered to be fully stroked; Under the sampling program, one valve in the group would be non- intrusively tested and the balance of the group would be flow tested each time testing is required. If problems are found with the sample valve that are determined to affect the operational readiness of the valve, all valves in the group must be tested using non-intrusive techniques during the same test cycle. Any failures require disassembly and inspection of the failed valve and an engineering evaluation for continuing non-intrusive testing.

Some check valves in the IST Program will be tested using non-intrusive testing techniques as an alternate method of verifying check valve closure capabilities and operational readiness. Nonintrusive testing techniques may be used in a sampling plan such that similar valves in the same service condition are grouped for testing purposes.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 17 of 136 The check valves in the sample program are separated into groups to include valves that are of the same design manufacturer, size, model number, and materials of construction, that have the same service condition, and that have the same valve orientation. Each valve within the group has to be tested satisfactory before extending the test interval.

5.5.4 Check Valve Exercise Test Using a Disassembly and Inspection Program Where non-intrusive verification of check valve exercise to the intended safety function (open and/or closed) is not practicable, check valves will require disassembly and inspection during refueling outages or on a refueling cycle frequency to prove operational readiness. The refueling outage justifications are included in the plan, as appropriate, to document the effected valves. To minimize the number of check valves that are disassembled during refueling outages a Check Valve Sample Disassembly and Inspection Program has been implemented. The check valves in the sample program are separated into groups to include valves that are of the same design manufacturer, size, model number, and materials of construction, that have the same service condition, and that have the same valve orientation.

At each disassembly the full-stroke capability of the valve being tested shall be verified by manually exercising the valve disc to the full open and closed position and the internals inspected to verify that the valve is structurally sound with no loose or corroded parts. If the disassembled valve is unable to be full-stroke exercised for any reason an evaluation shall be conducted to determine if the failure is of a generic nature that would affect operational readiness of the other valves in that group. If affected, the remaining valves in the group shall be disassembled, inspected, and manually full-stroke exercised.

5.5.5 Check Valve Condition Monitoring As an alternative to the check valve testing requirements described above, IST- 5222 of the OM Code allows owners to establish a condition monitoring program. The requirements for a check valve condition monitoring program are described in Mandatory Appendix II of the OM Code. The process controls for the Check Valve Condition Monitoring Program are detailed in plant general procedure 0PGP03-ZE-0016.

5.5.6 Safety and Relief Valve Required Tests Appendix I of the OM Code establishes different test frequencies and sample number for Class 1, 2, and 3 safety/relief valves. Periodic testing of all pressure relief devices is required. No maintenance, adjustment, disassembly, or other activity that could affect the as-found set-pressure or seat tightness data is permitted. When on-line testing is performed to satisfy periodic testing requirements the visual examination may be performed out of sequence.

Class 1 Pressure Relief Valves A 5-year test interval for periodic testing shall be established. No maximum limit is specified for the number of valves to be tested within each interval. A minimum of 20%

of the valves from each valve group shall be tested within any 24- m o n t h interval.

This 20% shall consist of valves that have not been tested during the current 5-year interval, if they exist. The test interval for any valve shall not exceed 5 years.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 18 of 136 For Class 1 Safety Valves, tests before maintenance or set-pressure adjustment, or both, shall be performed for a, b, and c in sequence. The remaining tests shall be performed in sequence after maintenance or set-pressure adjustment.

a. Visual examination

b. Seat tightness determination, if practical

c. Set-pressure determination

d. Determination of operation and electrical characteristics of bellows alarm switch

e. Determination of integrity of the balancing device on balanced valves

f. Determination o f operation and electrical characteristics of position indicators

g. Determination of compliance with Owners seat tightness criteria Class 2 and 3 Pressure Relief Valves A 10-year test interval for periodic testing, with the exception of the Main Steam Safety Valves, shall be established. No maximum limit is specified for the number of valves to be tested within any single plant operating cycle. A minimum of 20% of the valves from each valve group shall be tested within any 48- m o n t h interval. This 20% shall consist of valves that have not been tested during the current 10-year interval, if they exist. The test interval for any valve shall not exceed 10 years. The Main Steam Safety valves shall be tested per the requirements of Class 1 Pressure Relief valves.

For Class 2 and 3 Main Steam Safety Valves, tests before maintenance or set-pressure adjustment, or both, shall be performed for a, b, and c in sequence. The remaining tests shall be performed in sequence after maintenance or set-pressure adjustment.

a. Visual examination

b. Seat tightness determination, if practical

c. Set-pressure determination

d. Determination of compliance with seat tightness criteria

e. Verification of the integrity of the balancing device on balanced valves For other Class 2 and 3 Pressure Relief Valves, tests before maintenance shall be performed for a, b, and c in sequence. The remaining tests shall be performed in sequence after maintenance or set-pressure adjustment.

a. Visual examination

b. Seat tightness determination, if practical

c. Set-pressure determination

d. Determination of compliance with seat tightness criteria

e. Verification of the integrity of the balancing device on balanced valves

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 19 of 136 Requirements for Testing Additional Valves If the as-found set-pressure exceeds the greater of either the owners set-pressure acceptance criteria or +/- 3% of the valve nameplate set-pressure, then two additional valves shall be tested from the same valve group. If any additional valve exceeds the above limits, all remaining valves in the group shall be tested. The cause and effect of valves to comply with the set-pressure acceptance criteria or the acceptance criteria for other required tests shall be evaluated. Based upon this evaluation the need for testing in addition to the minimum required tests shall be determined to address any generic concerns which could apply to valves in the same or other valve groups.

Class 2 and 3 Pressure Relief Devices in a Thermal Relief Application Tests shall be performed on all Class 2 and 3 relief valves used in a thermal relief application every 10 years, unless performance data indicate more frequent testing is necessary. In lieu of tests, the relief devices may be replaced every 10 years, unless performance data indicate more frequent testing is necessary. Percentage of valves requiring tests and scope expansion, subsequent to failure, do not apply. This is allowed per OM Code, Appendix I, Paragraph I-1390.

5.6 Justifications and Relief Requests 5.6.1 Cold Shutdown Justification (CSJ)

The OM Code permits the delay of valve testing that is impractical during power operation to be performed at cold shutdown. Justification for the delay of testing to the cold shutdown frequency shall be documented using a CSJ. Approval by the NRC of the CSJs is not required; however, they will be reviewed by the NRC as an integral part of the plan submittal.

The CSJ shall be formatted to contain the following information:

Cold shutdown justification number

System name and designation

Valve identification number

Valve category

Valve function

Deferred testing requirements

Justification for deferred testing, and

Alternate testing CSJs s h a l l be ordered numerically using the following methodology and sequentially numbered as follows:

CSJ-xx, where CSJ is the acronym for cold shutdown justification and xx is the sequential number.

Attachment 12 contains the CSJs that are applicable to the IST Valve List.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 20 of 136 5.6.2 Refueling Outage Justification (ROJ)

The OM Code permits the delay of valve testing that is impractical during power operation or cold shutdown to be performed at each refueling. Justification for the delay of testing to the refueling frequency shall be documented using a ROJ. Approval by the NRC of the ROJs is not required; however, they will be reviewed by the NRC as an integral part of the plan submittal.

The ROJ are formatted to contain the following information:

Refueling outage justification number

System name and designation

Valve identification number

Valve category

Valve function

Deferred testing requirements

Justification for deferred testing, and

Alternate testing ROJs are ordered numerically using the following methodology and sequentially numbered as follows:

ROJ-xx, where ROJ is the acronym for refueling outage justification and xx is the sequential number Attachment 13 contains the ROJs that are applicable to the IST Valve List.

5.6.3 Condition Monitoring Plans As an alternative to examination and testing of the OM Code, ISTC-5222 allows the implementation of a check valve condition monitoring program. The guidelines provided in Appendix II of the OM Code requires that condition monitoring test plans to document the optimized condition monitoring program activities and the associated intervals be included in plant documentation.

The condition monitoring plans identified in the IST Plan are derived from advisory panel deliberations. These plans describe the testing plan for each IST check valve group that is included in the Check Valve Condition Monitoring Program. The Condition Monitoring Plan shall be formatted to contain the following information:

Condition Monitoring Plan number

CM Plan revision

System designator

IST Group and Check Valve Group number

Valves in the IST Group

Valve function

Importance remarks

Condition monitoring discussion including Failure patterns, expected failure modes, and past failure causes

Condition monitoring testing requirements

Test frequency description

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 21 of 136 Condition Monitoring Plans shall be ordered alpha-numerically using the following methodology and sequentially numbered as follows:

CM-XX00, where CM is the acronym for condition monitoring and XX00 is the IST valve group number. (XX is system and 00 is a numerical sequence number)

Attachment 14 contains the Condition Monitoring Plans that are applicable to the IST Valve List.

5.6.4 Valve Relief Requests Relief from the requirements of the OM Code shall be requested where full compliance with the code is not practical. Relief Requests are submitted per the requirements of 10CFR50.55a for approval by the NRC. Guidelines for preparation of relief requests are provided in NEI White Paper, entitled Standard Format for Requests from Commercial Reactor Licensees Pursuant to 10 CFR 50.55a, Rev. 1, dated June 2004. These guidelines are provided in Attachment 1 of NUREG-1482, Rev. 3.

Relief is requested in accordance with:

10 CFR 50.55a(f)(6)(i), Impractical IST Requirements: Granting of relief

10 CFR 50.55a(h)(3)(z), Alternatives to codes and standards requirements

10 CFR 50.55a(h)(3)(z)(1), Acceptable level of quality and safety or

10 CFR 50.55a(h)(3)(z)(2), Hardship without a compensating increase in quality and safety The following information should be provided in the request for relief:

ASME Code Component(s) Affected

Component Function

Applicable Code Edition and Addenda

Applicable Code Requirement

Reason for Request

Proposed Alternative and Basis for Use

Duration of Proposed Alternative

Precedents Relief requests are to be numbered as follows:

VRR-xx, where VRR is the acronym for valve relief request and xx is the sequential number.

No valve relief requests have been requested for this interval.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 22 of 136 5.7 Valve List Symbols Symbols Used to Designate Valve Type Symbol Meaning 3Way Three Way A Angle B Butterfly BL Ball CK Check D Diaphragm GL Globe GT Gate NDL Needle PL Plug PRV Pressure Relief or Safety Valve SCK Stop Check Symbols Used to Designate Actuator Type Symbol Meaning AO Air Operated HO Hydraulic Operated M Manually Operated MO Motor Operated MOH Motor Operated High Risk MOH-C Motor Operated High Risk Close Stroke Time MOL Motor Operated Low Risk MOL-C Motor Operated Low Risk Close Stroke Time SA Self-Actuated SO Solenoid Operated LC Locked Closed O Locked Open NC Normally Closed NO Normally Open NT Throttled or Controlling C Closed O Open O/C Open/Closed FC Fail Closed FO Fail Open FAI Fail As-Is Symbols Used to Designate Test Requirements Symbol Meaning BD-C Bi-Directional Closed functionality test BD-O Bi-Directional Open functionality test CV-C Check Valve Closed exercise test CV-O Check Valve Open exercise test DIAG Diagnostic MOV test ET-C Exercise Test Closed (power operated valve)

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 23 of 136 Symbol Meaning ET-O Exercise Test Open (power operated valve)

FS-C Fail-Safe Closed test FS-O Fail-Safe Open test LT Leakage Test (other than Appendix J)

LTJ Leakage Test Appendix J OV-C Obturator Verification Closed test OV-O Obturator Verification Open test RPI Remote Position Indication test RV Relief Valve test ST-C Stroke Time Closed test ST-O Stroke Time Open test Test Frequencies Symbol Meaning 10Y 10 Years 2Y 2 Years App3 Appendix III (MOV Program frequency)

AppJ Appendix J (Option B frequency)

CM Condition Monitoring (Appendix II frequency)

CS Cold Shutdown frequency Q Quarterly frequency R Refueling Outage frequency Symbols Used to Designate Valve Category Symbol Meaning ML012040470 Risk Informed Special Treatment Requirement A Category A A/C Category A/C leak test and self-actuating B Category B B/C Category B/C Power Operated and self-actuating BOP Balance of Plant, Non-OM Code component C Category C Exempt Exempt Components (ISTA-1100/ISTB-1200/ISTC-1200)

Skid Skid Mounted Components 6.0 PROGRAM IMPLEMENTATION Program inservice tests required by the Code are implemented using the Surveillance Test Program or the Preventive Maintenance Program. The plant surveillance test program and procedures are used to identify the test method for verifying operational readiness of the component, to identify the frequency of the required tests, to establish plant conditions for performing component tests, and to document the results of component testing. The procedures act as the record of testing required by the OM Code.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 24 of 136 The surveillance test procedures implement the requirements of the plant technical specifications. The IST procedures are integral part of the Surveillance Test Program and procedures. At times, testing of a component required by technical specifications will meet the intent of testing required by the IST Program. In this instance no additional testing of the component is required; however, the IST Program Bases Document must identify that the tests required by the plant technical specifications will be used to document the required testing of the IST Program.

6.1 Testing Skid Mounted Components ISTB-1200(c) and ISTC-1200(b) address the acceptability of verifying the operational readiness of certain components and component subassemblies by means of testing the major component. STP will verify the operational readiness of certain valves and pumps by taking credit for the testing of the major component required by plant technical specifications.

When credit is taken for testing of the major component, it will be identified as part of the required testing portion of the IST Program Bases Document. Further discussion pertaining to the testing skid-mounted components and component subassemblies is provided in NUREG-1482, Rev.3, Sections 3.4, Skid-Mounted Components and Component Subassemblies, and 4.1.10, Skid-Mounted Valves and Component Subassemblies.

6.2 Valve Normal Position The normal position of system valves was determined by identifying the operational status of a system for plant 100% normal power operation. The normal position of the valve was established based on the position required to support plant 100% normal power operation.

6.3 Unit 1 and Unit 2 Designation The IST Program Plan is written as a combined Unit 1 with Unit 2 document. Any differences between the units will be identified by the specific Unit 1 or Unit 2 designator.

6.4 Corrective Actions As a result of the performed tests, any identified corrective actions and subsequent retests are made per the requirements of the OM Code, Technical Specifications, the Corrective Action Program, and the IST Repair and Replacement Program.

7.0 PROGRAM CONFIGURATION CONTROL As a minimum the program will be reviewed and revised as necessary for compliance with the ASME Code in effect as referenced by 10CFR50.55a(f) 18 months prior to the end of the fourth 120-month interval of commercial operation. Additionally, the scope of the program is subject to revision due to changes in system design, changes in design that affect the component safety function, or revisions to the applicable code requirements. In order to accommodate these changes STP reserves the right to submit program revisions that will enhance or improve the program at any time within the effective interval.

8.0 PROGRAM ATTACHMENTS (Note: Revision in the attachments have not been annotated with revision bars. Due to extensive changes made, attachments changes are considered a general revision)

Attachment 1: Unit 1 ISTB Tested Pump List Attachment 2: Unit 2 ISTB Tested Pump List Attachment 3: ML012040470 Exempt Pump List Attachment 4: ISTB Skid Tested Pump List

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 25 of 136 : Pump Relief Requests : Unit 1 ISTC Tested Valve List : Unit 2 ISTC Tested Valve List : Unit 1 ML012040470 Exempt Valve List : Unit 2 ML012040470 Exempt Valve List 0: Unit 1 ISTC Skid Tested Valve List 1: Unit 2 ISTC Skid Tested Valve List 2, Cold Shutdown Justifications 3: Refueling Outage Justifications 4: Condition Monitoring Plans

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 26 of 136 ATTACHMENT 1: Unit 1 ISTB Tested Pump List Pump ID Component Drawing / Coordinate Group Class Pump Test Test Procedure Notes Description Type Type Freq 2N121NPA101A HIGH HEAD SAFETY 5N129F05013#1 / F-4 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0042 INJECTION PUMP 1A Centrifugal Q 2Y 0PSP03-SI-0042 V 2Y 0PSP03-SI-0042 dP Q 0PSP03-SI-0004 Q Q 0PSP03-SI-0004 2N121NPA101B HIGH HEAD SAFETY 5N129F05014#1 / G-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0043 INJECTION PUMP 1B Centrifugal Q 2Y 0PSP03-SI-0043 V 2Y 0PSP03-SI-0043 dP Q 0PSP03-SI-0005 Q Q 0PSP03-SI-0005 2N121NPA101C HIGH HEAD SAFETY 5N129F05015#1 / F-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0044 INJECTION PUMP 1C Centrifugal Q 2Y 0PSP03-SI-0044 V 2Y 0PSP03-SI-0044 dP Q 0PSP03-SI-0006 Q Q 0PSP03-SI-0006 2N121NPA102A LOW HEAD SAFETY 5N129F05013#1 / C-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0039 INJECTION PUMP 1A Centrifugal Q 2Y 0PSP03-SI-0039 2N121NPA102A LOW HEAD SAFETY 5N129F05013#1 / C-3 B 2 Vertical Line Shaft V 2Y 0PSP03-SI-0039 PRR-04 INJECTION PUMP 1A Centrifugal dP Q 0PSP03-SI-0001 Q Q 0PSP03-SI-0001 2N121NPA102B LOW HEAD SAFETY 5N129F05014#1 / D-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0040 INJECTION PUMP 1B Centrifugal Q 2Y 0PSP03-SI-0040 V 2Y 0PSP03-SI-0040 PRR-04 dP Q 0PSP03-SI-0002 Q Q 0PSP03-SI-0002 2N121NPA102C LOW HEAD SAFETY 5N129F05015#1 / C-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0041 INJECTION PUMP 1C Centrifugal Q 2Y 0PSP03-SI-0041 V 2Y 0PSP03-SI-0041 PRR-04 dP Q 0PSP03-SI-0003 Q Q 0PSP03-SI-0003 2R161NPA101A RESIDUAL HEAT 5R169F20000#1 / B-6 A 2 Vertical Line Shaft dP 2Y 0PSP03-RH-0015 REMOVAL PUMP 1A Centrifugal Q 2Y 0PSP03-RH-0015 V 2Y 0PSP03-RH-0015 PRR-04 dP 6M 0PSP03-RH-0001 PRR-03 2R161NPA101A RESIDUAL HEAT 5R169F20000#1 / B-6 A 2 Vertical Line Shaft Q 6M 0PSP03-RH-0001 PRR-03 REMOVAL PUMP 1A Centrifugal V 6M 0PSP03-RH-0001 PRR-03 / PRR-04 2R161NPA101B RESIDUAL HEAT 5R169F20000#1 / E-6 A 2 Vertical Line Shaft dP 2Y 0PSP03-RH-0016 REMOVAL PUMP 1B Centrifugal Q 2Y 0PSP03-RH-0016 V 2Y 0PSP03-RH-0016 PRR-04 dP 6M 0PSP03-RH-0002 PRR-03 Q 6M 0PSP03-RH-0002 PRR-03 V 6M 0PSP03-RH-0002 PRR-03 / PRR-04 2R161NPA101C RESIDUAL HEAT 5R169F20000#1 / G-6 A 2 Vertical Line Shaft dP 2Y 0PSP03-RH-0017 REMOVAL PUMP 1C Centrifugal Q 2Y 0PSP03-RH-0017 V 2Y 0PSP03-RH-0017 PRR-04 dP 6M 0PSP03-RH-0003 PRR-03 Q 6M 0PSP03-RH-0003 PRR-03 V 6M 0PSP03-RH-0003 PRR-03 / PRR-04 2R171NPA101A CENTRIFUGAL 5R179F05007#1 / B-5 A 2 Centrifugal dP 2Y 0PSP03-CV-0021 CHARGING PUMP 1A Q 2Y 0PSP03-CV-0021 V 2Y 0PSP03-CV-0021 PRR-04 dP Q 0PSP03-CV-0019 Q Q 0PSP03-CV-0019 R171NPA101A CENTRIFUGAL 5R179F05007#1 / B-5 A 2 Centrifugal V Q 0PSP03-CV-0019 PRR-04 CHARGING PUMP 1A 2R171NPA101B CENTRIFUGAL 5R179F05007#1 / D-5 A 2 Centrifugal dP 2Y 0PSP03-CV-0022 CHARGING PUMP 1B Q 2Y 0PSP03-CV-0022 V 2Y 0PSP03-CV-0022 PRR-04 dP Q 0PSP03-CV-0020 Q Q 0PSP03-CV-0020 V Q 0PSP03-CV-0020 PRR-04 3R201NPA101A COMPONENT COOLING 5R209F05017#1 / B-7 A 3 Centrifugal dP Q 0PSP03-CC-0001 PRR-01 WATER PUMP 1A Q Q 0PSP03-CC-0001 PRR-01 V Q 0PSP03-CC-0001 PRR-01 3R201NPA101B COMPONENT COOLING 5R209F05018#1 / B-7 A 3 Centrifugal dP Q 0PSP03-CC-0002 PRR-01 WATER PUMP 1B Q Q 0PSP03-CC-0002 PRR-01 V Q 0PSP03-CC-0002 PRR-01 3R201NPA101C COMPONENT COOLING 5R209F05019#1 / B-7 A 3 Centrifugal dP Q 0PSP03-CC-0003 PRR-01 WATER PUMP 1C Q Q 0PSP03-CC-0003 PRR-01 V Q 0PSP03-CC-0003 PRR-01 3R211NPA101A SPENT FUEL COOLING 5R219F05028#1 / G-3 A 3 Centrifugal dP Q 0PSP03-FC-0002 PRR-01 PUMP 1A Q Q 0PSP03-FC-0002 PRR-01 V Q 0PSP03-FC-0002 PRR-01 / PRR-04 3R211NPA101B SPENT FUEL COOLING 5R219F05028#1 / D-3 A 3 Centrifugal dP Q 0PSP03-FC-0003 PRR-01 PUMP 1B Q Q 0PSP03-FC-0003 PRR-01 V Q 0PSP03-FC-0003 PRR-01 / PRR-04

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 27 of 136 ATTACHMENT 1: Unit 1 ISTB Tested Pump List Pump ID Component Drawing / Coordinate Group Class Pump Test Test Procedure Notes Description Type Type Freq 3R281NPA101A ESSENTIAL COOLING 5R289F05038#1SH1 / C- A 3 Vertical Line Shaft dP Q 0PSP03-EW-0017 ISTB- 5000(b)

WATER PUMP 1A 3 Centrifugal Q Q 0PSP03-EW-0017 ISTB-5000(b)

V Q 0PSP03-EW-0017 ISTB- 5000(b) 3R281NPA101B ESSENTIAL COOLING 5R289F05038#1SH2 / C- A 3 Vertical Line Shaft dP Q 0PSP03-EW-0018 ISTB- 5000(b)

WATER PUMP 1B 3 Centrifugal 3R281NPA101B ESSENTIAL COOLING 5R289F05038#1SH2 / C- A 3 Vertical Line Shaft Q Q 0PSP03-EW-0018 ISTB- 5000(b)

WATER PUMP 1B 3 Centrifugal V Q 0PSP03-EW-0018 ISTB- 5000(b) 3R281NPA101C ESSENTIAL COOLING 5R289F05038#1SH3 / C- A 3 Vertical Line Shaft dP Q 0PSP03-EW-0019 ISTB- 5000(b)

WATER PUMP 1C 3 Centrifugal Q Q 0PSP03-EW-0019 ISTB- 5000(b)

V Q 0PSP03-EW-0019 ISTB- 5000(b) 3S141MPA01 MOTOR DRIVEN AUX 5S141F00024#1 / F-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0001 FEEDWATER PUMP NO. Q 2Y 0PSP03-AF-0001 11 dP Q 0PSP03-AF-0001 PRR-01 Q Q 0PSP03-AF-0001 PRR-01 V Q 0PSP03-AF-0001 PRR-01 / PRR-04 3S141MPA02 MOTOR DRIVEN AUX 5S141F00024#1 / C-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0002 FEEDWATER PUMP NO. Q 2Y 0PSP03-AF-0002 12 dP Q 0PSP03-AF-0002 PRR-01 Q Q 0PSP03-AF-0002 PRR-01 V Q 0PSP03-AF-0002 PRR-01 3S141MPA03 MOTOR DRIVEN AUX 5S141F00024#1 / B-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0003 3S141MPA03 FEEDWATER PUMP NO. Q 2Y 0PSP03-AF-0003 13 dP Q 0PSP03-AF-0003 PRR-01 Q Q 0PSP03-AF-0003 PRR-01 V Q 0PSP03-AF-0003 PRR-01 3S141MPA04 TURBINE DRIVEN AUX 5S141F00024#1 / G-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0007 FEEDWATER PUMP NO. Q 2Y 0PSP03-AF-0007 14 dP Q 0PSP03-AF-0007 PRR-01 N Q 0PSP03-AF-0007 PRR-01 Q Q 0PSP03-AF-0007 PRR-01 V Q 0PSP03-AF-0007 PRR-01 / PRR-04 3V111VPA004 ESSENTIAL CHILL 5V119V10001#1 / F-7 A 3 Centrifugal dP Q 0PSP03-CH-0001 PRR-01 WATER PUMP 11A Q Q 0PSP03-CH-0001 PRR-01 V Q 0PSP03-CH-0001 PRR-01 / PRR-04 3V111VPA005 ESSENTIAL CHILL 5V119V10001#1 / C-7 A 3 Centrifugal dP Q 0PSP03-CH-0002 PRR-01 WATER PUMP 11B Q Q 0PSP03-CH-0002 PRR-01 V Q 0PSP03-CH-0002 PRR-01 / PRR-04 3V111VPA006 ESSENTIAL CHILL 5V119V10001#1 / A-7 A 3 Centrifugal dP Q 0PSP03-CH-0003 PRR-01 WATER PUMP 11C Q Q 0PSP03-CH-0003 PRR-01 V Q 0PSP03-CH-0003 PRR-01 / PRR-04

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 28 of 136 ATTACHMENT 2: Unit 2 ISTB Tested Pump List Pump ID Component Drawing / Coordinate Group Class Pump Test Test Procedure Notes Description Type Type Freq.

2N122NPA201A HIGH HEAD SAFETY 5N129F05013#2 / F-4 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0042 INJECTION PUMP 2A Centrifugal Q 2Y 0PSP03-SI-0042 V 2Y 0PSP03-SI-0042 dP Q 0PSP03-SI-0004 Q Q 0PSP03-SI-0004 2N122NPA201B HIGH HEAD SAFETY 5N129F05014#2 / G-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0043 INJECTION PUMP 2B Centrifugal Q 2Y 0PSP03-SI-0043 V 2Y 0PSP03-SI-0043 dP Q 0PSP03-SI-0005 Q Q 0PSP03-SI-0005 2N122NPA201C HIGH HEAD SAFETY 5N129F05015#2 / F-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0044 INJECTION PUMP 2C Centrifugal Q 2Y 0PSP03-SI-0044 V 2Y 0PSP03-SI-0044 dP Q 0PSP03-SI-0006 Q Q 0PSP03-SI-0006 2N122NPA202A LOW HEAD SAFETY 5N129F05013#2 / C-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0039 INJECTION PUMP 2A Centrifugal Q 2Y 0PSP03-SI-0039 2 Vertical Line Shaft V 2Y 0PSP03-SI-0039 PRR-04 Centrifugal dP Q 0PSP03-SI-0001 Q Q 0PSP03-SI-0001 2N122NPA202B LOW HEAD SAFETY 5N129F05014#2 / D-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0040 INJECTION PUMP 2B Centrifugal Q 2Y 0PSP03-SI-0040 V 2Y 0PSP03-SI-0040 PRR-04 dP Q 0PSP03-SI-0002 Q Q 0PSP03-SI-0002 2N122NPA202C LOW HEAD SAFETY 5N129F05015#2 / C-3 B 2 Vertical Line Shaft dP 2Y 0PSP03-SI-0041 INJECTION PUMP 2C Centrifugal Q 2Y 0PSP03-SI-0041 V 2Y 0PSP03-SI-0041 PRR-04 dP Q 0PSP03-SI-0003 Q Q 0PSP03-SI-0003 2R162NPA201A RESIDUAL HEAT REMOVAL 5R169F20000#2 / B-6 A 2 Vertical Line Shaft dP 2Y 0PSP03-RH-0015 PUMP 2A Centrifugal Q 2Y 0PSP03-RH-0015 V 2Y 0PSP03-RH-0015 PRR-04 dP 6M 0PSP03-RH-0001 PRR-03 2R162NPA201A RESIDUAL HEAT REMOVAL 5R169F20000#2 / B-6 A 2 Vertical Line Shaft Q 6M 0PSP03-RH-0001 PRR-03 PUMP 2A Centrifugal V 6M 0PSP03-RH-0001 PRR-03 / PRR-04 2R162NPA201B RESIDUAL HEAT REMOVAL 5R169F20000#2 / E-6 A 2 Vertical Line Shaft dP 2Y 0PSP03-RH-0016 PUMP 2B Centrifugal Q 2Y 0PSP03-RH-0016 V 2Y 0PSP03-RH-0016 PRR-04 dP 6M 0PSP03-RH-0002 PRR-03 Q 6M 0PSP03-RH-0002 PRR-03 V 6M 0PSP03-RH-0002 PRR-03 / PRR-04 2R162NPA201C RESIDUAL HEAT REMOVAL 5R169F20000#2 / G-6 A 2 Vertical Line Shaft dP 2Y 0PSP03-RH-0017 PUMP 2C Centrifugal Q 2Y 0PSP03-RH-0017 V 2Y 0PSP03-RH-0017 PRR-04 dP 6M 0PSP03-RH-0003 PRR-03 Q 6M 0PSP03-RH-0003 PRR-03 V 6M 0PSP03-RH-0003 PRR-03 / PRR-04 2R172NPA201A CENTRIFUGAL CHARGING 5R179F05007#2 / B-5 A 2 Centrifugal dP 2Y 0PSP03-CV-0021 PUMP 2A Q 2Y 0PSP03-CV-0021 V 2Y 0PSP03-CV-0021 PRR-04 dP Q 0PSP03-CV-0019 Q Q 0PSP03-CV-0019 V Q 0PSP03-CV-0019 PRR-04 2R172NPA201B CENTRIFUGAL CHARGING 5R179F05007#2 / D-5 A 2 Centrifugal dP 2Y 0PSP03-CV-0022 PUMP 2B Q 2Y 0PSP03-CV-0022 V 2Y 0PSP03-CV-0022 dP Q 0PSP03-CV-0020 Q Q 0PSP03-CV-0020 V Q 0PSP03-CV-0020 3R202NPA201A COMPONENT COOLING 5R209F05017#2 / B-7 A 3 Centrifugal dP Q 0PSP03-CC-0001 PRR-01 WATER PUMP 2A Q Q 0PSP03-CC-0001 PRR-01 V Q 0PSP03-CC-0001 PRR-01 3R202NPA201B COMPONENT COOLING 5R209F05018#2 / B-7 A 3 Centrifugal dP Q 0PSP03-CC-0002 PRR-01 WATER PUMP 2B Q Q 0PSP03-CC-0002 PRR-01 V Q 0PSP03-CC-0002 PRR-01 3R202NPA201C COMPONENT COOLING 5R209F05019#2 / B-7 A 3 Centrifugal dP Q 0PSP03-CC-0003 PRR-01 WATER PUMP 2C Q Q 0PSP03-CC-0003 PRR-01 V Q 0PSP03-CC-0003 PRR-01 3R212NPA201A SPENT FUEL COOLING 5R219F05028#2 / G-3 A 3 Centrifugal dP Q 0PSP03-FC-0002 PRR-01 PUMP 2A Q Q 0PSP03-FC-0002 PRR-01 V Q 0PSP03-FC-0002 PRR-01 / PRR-04 3R212NPA201B SPENT FUEL COOLING 5R219F05028#2 / D-3 A 3 Centrifugal dP Q 0PSP03-FC-0003 PRR-01 PUMP 2B Q Q 0PSP03-FC-0003 PRR-01 V Q 0PSP03-FC-0003 PRR-01 / PRR-04 3R282NPA201A ESSENTIAL COOLING WATER 5R289F05038#2SH1 / A 3 Vertical Line Shaft dP Q 0PSP03-EW-0017 ISTB-5000(b)

PUMP 2A C-3 Centrifugal dP Q 0PSP03-EW-0017 Q Q 0PSP03-EW-0017 ISTB-5000(b)

Q Q 0PSP03-EW-0017 V Q 0PSP03-EW-0017 ISTB- 5000(b)

V Q 0PSP03-EW-0017 PRR-04

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 29 of 136 ATTACHMENT 2: Unit 2 ISTB Tested Pump List Pump ID Component Drawing / Coordinate Group Class Pump Test Test Procedure Notes Description Type Type Freq.

3R282NPA201B ESSENTIAL COOLING WATER 5R289F05038#2SH2 / C- A 3 Vertical Line Shaft dP Q 0PSP03-EW-0018 ISTB-5000(b)

PUMP 2B 3 Centrifugal dP Q 0PSP03-EW-0018 Q Q 0PSP03-EW-0018 ISTB-5000(b)

Q Q 0PSP03-EW-0018 V Q 0PSP03-EW-0018 ISTB-5000(b)

V Q 0PSP03-EW-0018 PRR-04 3R282NPA201C ESSENTIAL COOLING WATER 5R289F05038#2SH3 / C- A 3 Vertical Line Shaft dP Q 0PSP03-EW-0019 ISTB-5000(b)

PUMP 2C 3 Centrifugal dP Q 0PSP03-EW-0019 Q Q 0PSP03-EW-0019 ISTB-5000(b)

Q Q 0PSP03-EW-0019 V Q 0PSP03-EW-0019 ISTB-5000(b)

V Q 0PSP03-EW-0019 PRR-04 3S142MPA01 MOTOR DRIVEN AUX 5S141F00024#2 / F-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0001 FEEDWATER PUMP NO. 21 Q 2Y 0PSP03-AF-0001 dP Q 0PSP03-AF-0001 PRR-01 Q Q 0PSP03-AF-0001 PRR-01 V Q 0PSP03-AF-0001 PRR-01 3S142MPA02 MOTOR DRIVEN AUX 5S141F00024#2 / C-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0002 FEEDWATER PUMP NO. 22 Q 2Y 0PSP03-AF-0002 dP Q 0PSP03-AF-0002 PRR-01 Q Q 0PSP03-AF-0002 PRR-01 V Q 0PSP03-AF-0002 PRR-01 / PRR-04 3S142MPA03 MOTOR DRIVEN AUX 5S141F00024#2 / B-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0003 FEEDWATER PUMP NO. 23 Q 2Y 0PSP03-AF-0003 dP Q 0PSP03-AF-0003 PRR-01 Q Q 0PSP03-AF-0003 PRR-01 V Q 0PSP03-AF-0003 PRR-01 / PRR-04 3S142MPA04 TURBINE DRIVE AUX 5S141F00024#2 / G-7 A 3 Centrifugal dP 2Y 0PSP03-AF-0007 FEEDWATER PUMP NO. 24 Q 2Y 0PSP03-AF-0007 dP Q 0PSP03-AF-0007 PRR-01 N Q 0PSP03-AF-0007 PRR-01 Q Q 0PSP03-AF-0007 PRR-01 V Q 0PSP03-AF-0007 PRR-01 3V112VPA004 ESSENTIAL CHILL WATER 5V119V10001#2 / F-7 A 3 Centrifugal dP Q 0PSP03-CH-0001 PRR-01 PUMP 21A Q Q 0PSP03-CH-0001 PRR-01 V Q 0PSP03-CH-0001 PRR-01 / PRR-04 3V112VPA005 ESSENTIAL CHILL WATER 5V119V10001#2 / C-7 A 3 Centrifugal dP Q 0PSP03-CH-0002 PRR-01 PUMP 21B Q Q 0PSP03-CH-0002 PRR-01 V Q 0PSP03-CH-0002 PRR-01 / PRR-04 3V112VPA006 ESSENTIAL CHILL WATER 5V119V10001#2 / A-7 A 3 Centrifugal dP Q 0PSP03-CH-0003 PRR-01 PUMP 21C Q Q 0PSP03-CH-0003 PRR-01 V Q 0PSP03-CH-0003 PRR-01 / PRR-04

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 30 of 136 : ML012040470 Exempt Pump List Pump ID/TPNS Component Description Drawing / Coordinates Group Class 2N101NPA101A CONTAINMENT SPRAY PUMP 1A 5N109F05037#1 / G-3 ML012040470 2 2N101NPA101B CONTAINMENT SPRAY PUMP 1B 5N109F05037#1 / D-3 ML012040470 2 2N101NPA101C CONTAINMENT SPRAY PUMP 1C 5N109F05037#1 / B-3 ML012040470 2 3R171NPA103A BORIC ACID TRANSFER PUMP 1A 5R179F05009#1 / D-4 ML012040470 3 3R171NPA103B BORIC ACID TRANSFER PUMP 1B 5R179F05009#1 / C-4 ML012040470 3 3R281NPA102A ECW SCREEN WASH BOOSTER PUMP 1A 5R289F05039#1 / D-7 ML012040470 3 3R281NPA102B ECW SCREEN WASH BOOSTER PUMP 1B 5R289F05039#1 / D-4 ML012040470 3 3R281NPA102C ECW SCREEN WASH BOOSTER PUMP 1C 5R289F05039#1 / D-2 ML012040470 3 2N102NPA201A CONTAINMENT SPRAY PUMP 2A 5N109F05037#2 / G-3 ML012040470 2 2N102NPA201B CONTAINMENT SPRAY PUMP 2B 5N109F05037#2 / D-3 ML012040470 2 2N102NPA201C CONTAINMENT SPRAY PUMP 2C 5N109F05037#2 / B-3 ML012040470 2 3R172NPA203A BORIC ACID TRANSFER PUMP 2A 5R179F05009#2 / D-4 ML012040470 3 3R172NPA203B BORIC ACID TRANSFER PUMP 2B 5R179F05009#2 / C-4 ML012040470 3 3R282NPA202A ECW SCREEN WASH BOOSTER PUMP 2A 5R289F05039#2 / D-7 ML012040470 3 3R282NPA202B ECW SCREEN WASH BOOSTER PUMP 2B 5R289F05039#2 / D-4 ML012040470 3 3R282NPA202C ECW SCREEN WASH BOOSTER PUMP 2C 5R289F05039#2 / D-2 ML012040470 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 31 of 136 : ISTB Skid Tested Pump List Pump ID/TPNS Component Description Drawing / Coordinates Group Class 3Q151MAB0134 DIESEL #11 STANDBY JACKET WATER PUMP 5Q159F22540#1 / E-7 Skid 3 3Q151MAB0234 DIESEL #12 STANDBY JACKET WATER PUMP 5Q159F22540#1 / E-4 Skid 3 3Q151MAB0334 DIESEL #13 STANDBY JACKET WATER PUMP 5Q159F22540#1 / E-2 Skid 3 3Q151MPC0134 DIESEL #11 STDBY LUBE OIL PUMP 5Q159F22542#1 / E-7 Skid 3 3Q151MPC0234 DIESEL #12 STDBY LUBE OIL PUMP 5Q159F22542#1 / E-5 Skid 3 3Q151MPC0334 DIESEL #13 STDBY LUBE OIL PUMP 5Q159F22542#1 / E-2 Skid 3 3Q151MPU0134 DIESEL #11 LUBE OIL CIRCULATING PUMP 5Q159F22542#1 / E-7 Skid 3 3Q151MPU0234 DIESEL #12 LUBE OIL CIRCULATING PUMP 5Q159F22542#1 / E-5 Skid 3 3Q151MPU0334 DIESEL #13 LUBE OIL CIRCULATING PUMP 5Q159F22542#1 / E-2 Skid 3 3Q151MPX0134 DIESEL #11 STANDBY JACKET WATER CIRCULATING PUMP 5Q159F22540#1 / D-7 Skid 3 3Q151MPX0234 DIESEL #12 STANDBY JACKET WATER CIRCULATING PUMP 5Q159F22540#1 / D-4 Skid 3 3Q151MPX0334 DIESEL #13 STANDBY JACKET WATER CIRCULATING PUMP 5Q159F22540#1 / D-2 Skid 3 3Q152MAB0134 DIESEL #21 STANDBY JACKET WATER PUMP 5Q159F22540#2 / E-7 Skid 3 3Q152MAB0234 DIESEL #22 STANDBY JACKET WATER PUMP 5Q159F22540#2 / E-4 Skid 3 3Q152MAB0334 DIESEL #23 STANDBY JACKET WATER PUMP 5Q159F22540#2 / E-2 Skid 3 3Q152MPC0134 DIESEL #21 STDBY LUBE OIL PUMP 5Q159F22542#2 / E-7 Skid 3 3Q152MPC0234 DIESEL #22 STDBY LUBE OIL PUMP 5Q159F22542#2 / E-5 Skid 3 3Q152MPC0334 DIESEL #23 STDBY LUBE OIL PUMP 5Q159F22542#2 / E-2 Skid 3 3Q152MPU0134 DIESEL #21 LUBE OIL CIRCULATING PUMP 5Q159F22542#2 / E-7 Skid 3 3Q152MPU0234 DIESEL #22 LUBE OIL CIRCULATING PUMP 5Q159F22542#2 / E-5 Skid 3 3Q152MPU0334 DIESEL #23 LUBE OIL CIRCULATING PUMP 5Q159F22542#2 / E-2 Skid 3 3Q152MPX0134 DIESEL #21 STANDBY JACKET WATER CIRCULATING PUMP 5Q159F22540#2 / D-7 Skid 3 3Q152MPX0234 DIESEL #22 STANDBY JACKET WATER CIRCULATING PUMP 5Q159F22540#2 / D-4 Skid 3 3Q152MPX0334 DIESEL #23 STANDBY JACKET WATER CIRCULATING PUMP 5Q159F22540#2 / D-2 Skid 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 32 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests PUMP RELIEF REQUEST PRR-01 Use of Code Case OMN-18 Proposed Alternative in Accordance with 10CFR50.55a(a)(z)(1) on the basis that the proposed alternative provides an acceptable level of quality and safety Reference 3 approved the use of this Alternative

1. ASME Code Component(s) Affected Comprehensive Pump ASME Pump Description Test (CPT) Flow Rate Code (Gallons per Minute) Class 3S141(2)MPA01 Auxiliary Feedwater Pump 11/21 545 3 3S141(2)MPA02 Auxiliary Feedwater Pump 12/22 545 3 3S141(2)MPA03 Auxiliary Feedwater Pump 13/23 545 3 3S141(2)MPA04 Auxiliary Feedwater Pump 14/24 545 3 3R201(2)NPA1(2)01A Component Cooling Water Pump 1A/2A 12500 3 3R201(2)NPA1(2)01B Component Cooling Water Pump 1B/2B 12500 3 3R201(2)NPA1(2)01C Component Cooling Water Pump 1C/2C 12500 3 3V111(2)VPA004 Essential Chilled Water Pump 11A/21A 885 3 3V111(2)VPA005 Essential Chilled Water Pump 11B/21B 885 3 3V111(2)VPA006 Essential Chilled Water Pump 11C/21C 885 3 3R211(2)NPA(2)01A Spent Fuel Pool Cooling Pump 1A/2A 2550 3 3R211(2)NPA(2)01B Spent Fuel Pool Cooling Pump 1B/2B 2550 3 Function: The above pumps are required to perform a specific function in shutting down the reactor to a safe shutdown, maintaining a safe shutdown condition or in mitigating the consequences of an accident.

2. Applicable Code Edition and Addenda

American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance of Nuclear Power Plants (OM Code) 2012 Edition.

3. Applicable Code Requirement

ISTB-3400, Frequency of Inservice Tests, states that an inservice test shall be run on each pump as specified in Table ISTB-3400-1.

Table ISTB-3400-1 requires Group A and Group B tests to be performed quarterly and a comprehensive test to be performed biennially.

4. Reason for Request

The ASME Code committees have approved Code Case OMN-18, Alternative Testing Requirements for Pumps Tested Quarterly within +/- 20% of Design Flow. This Code Case has been approved for use in Regulatory Guide 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, Revision 2, March 2017.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 33 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests This Code Case allows the Owner to not perform the Comprehensive test with the associated acceptance criteria, if the quarterly test is performed at +/- 20% of design flow and the instrumentation meets the accuracy requirements of Table ISTB-3500-1 for the comprehensive and preservice tests.

ASME OM Code, Subsection ISTB, paragraph ISTB-3300(e)(1) states that reference values shall be established at the comprehensive pump test flow rate for the comprehensive test. Paragraph ISTB-3300(e)(2) states that reference values shall be established at the comprehensive pump test flow rate for the Group A and Group B tests, if practicable. If not practicable, the reference point flow rate shall be established at the highest practical flow rate. For the PRR-01 pumps listed in section 1, the Reference Value to be used is the comprehensive pump test flow rate.

Further, ISTB allows the Owner to categorize the pumps in their program. As such, an Owner could categorize a pump that otherwise meets the requirements of Group B, as a Group A pump, and test according to the provision of Code Case OMN-18. However, in doing so additional data (vibration and flow or differential pressure) are obtained quarterly, rather than once every two years.

Guidelines set forth in Code Case OMN-18 Rev 1, Use of a Pump Curve for Testing, will be followed. This Code Case has been approved for use per RG 1.192 Revision 2 for the ASME OM Code, 2012 Edition, however the associated Code Case applicability statement included in that edition reflects 1994 and subsequent editions and addenda through the 2006 Addenda.

The upper end values of the Group A Test Acceptable Ranges for flow and differential pressure (or, discharge pressure) must be 1.06Qr and 1.06Pr (or 1.06Pr), respectively, as applicable to the pump type.

The high values of the Required Action Ranges for flow and differential pressure (or discharge pressure) must be >1.06Qr and >1.06Pr (or 1.06Pr), respectively, as applicable to the pump type. This Condition is listed in Table 2 of RG 1.192, and will be included in the test procedures at STPEGS.

Code applicability for Code Case OMN-18 lists OMc-1994 Addenda, and subsequent Editions and Addenda through the 2006 Addenda. STPEGS is implementing the 2012 Edition of the OM Code.

5. Proposed Alternative and Basis for Use STPEGS proposed to employ the provisions of Code Case OMN-18 and perform a quarterly Group A test in lieu of performing a biennial comprehensive test and apply the acceptance criteria associated with the Group A test. As an alternative to utilizing the acceptance criteria associated with the Group A test, STPEGS will specify the acceptance criteria associated with the upper limit as 1.06% in lieu of the 1.10%

allowed by Table ISTB-5121-1. This alternative testing is applicable to only those pumps with full flow testing capability. This alternative testing is also in compliance with the NRC Condition in Table 2 of RG 1.192, Revision 2, March 2017. The pressure instrumentation used during the tests shall have an accuracy of at least 0.5%.

Using the provisions of this relief request as an alternative to the requirements of ISTB-3400 provides a reasonable alternative to the ASME OM Code requirements. Based on this determination, the proposed alternative provides an acceptable level of quality and safety. The 2012 Edition of the OM Code, ISTB-5000(b) allows for substitution of a comprehensive test for a Group A test.

Conclusion:

In summary, South Texas Project proposed to test the pumps listed in this request by implementing the requirements of ASME OM Code Case OMN-18, as per the NRC Condition listed in RG 1.192, Revision 2, Table 2, in lieu of ISTB-3400 and Table ISTB-3400-1.

Using the provisions of this request would provide adequate detection of component degradation and would continue to provide reasonable assurance of the operational readiness of affected components. Therefore, compliance with the requirements of ASME OM Code Case OMN-18 would result in an acceptable level of quality and safety pursuant to 10 CFR 50.55a(z)(1).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 34 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests

6. Duration of Proposed Alternative The proposed alternative will be implemented from the end of the Third Interval (September 25, 2020) until the end of the Fourth Interval (September 24, 2030).

7. Precedent NRC Safety Evaluation of Relief Requests for Second 10-Year Interval of the IST Program for South Texas Project (STP), Units Nos. 1 and 2 (TAC. Nos. MB2136 and MB2137). May 2, 2003. Previously approved as PRR-01.

8. References

1. ASME OM Code-2012, Code Case OMN-18, Alternative Testing Requirements for Pumps Tested Quarterly within +/- 20% of Design Flow

2. ML16321A337, Regulatory Guide 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, Revision 2, March 2017

3. ML20199M162 South Texas Project, Units 1 And 2 - Proposed Alternatives PRR-01, PRR-02, PRR-03, and PRR-04 To the Requirements of The ASME OM Code (EPIDS L-2020-LLR-0007 TO L-2020-LLR-0010), dated July 21, 2020

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 35 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests PUMP RELIEF REQUEST PRR-03 Alternative to ISTB-3400-1 Frequency Proposed Alternative in Accordance with 10CFR50.55a(a)(3)(i) on the basis that the proposed alternative provides an acceptable level of quality and safety Reference 5 approved the use of this Alternative.

1. ASME Code Component(s) Affected 2R161(2)NPA1(2)01A, Residual Heat Removal Pump A (Class 2) 2R161(2)NPA1(2)01B, Residual Heat Removal Pump B (Class 2) 2R161(2)NPA1(2)01C, Residual Heat Removal Pump C (Class 2)

Function: Circulate 3000 gpm of Reactor Coolant System (RCS) flow from the hot legs to the cold legs for the final phase of a reactor cooldown following a small break loss of coolant accident (SBLOCA), steam generator tube rupture (SGTR), main steam line break (MSLB), or feedwater line break (FWLB) accident condition.

2. Applicable Code Edition and Addenda

American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance of Nuclear Power Plants (OM Code) 2012 Edition.

3. Applicable Code Requirement

Table ISTB-3400-1 requires a Group A inservice test to be run on each pump every three months.

4. Reason for Request

STPNOC received relief to perform the ISTB-3400-1 quarterly test on a six-month frequency in its first three IST intervals and requests to be granted the same relief in the fourth IST interval. Test performance requires containment entry by operators to run the RHR pumps and obtain test data. More frequent performance results in the unnecessary acquisition of radiation dose and equipment wear.

5. Proposed Alternative and Basis for Use A Group A IST will be run on each RHR pump nominally every six months during normal plant operation. This test frequency will be maintained during plant shutdown periods if it can reasonably be accomplished per the requirements of ISTB-5121. A Comprehensive test per ISTB-5123 may be performed in lieu of a Group A test.

STPNOC has three residual heat removal (RHR) trains used only for long-term cooldown events following safety injection (SI) system operation. The RHR system does not serve the low-head SI function as required at other nuclear plants and is therefore not critical to the immediate accident mitigation function. The initial relief request for a six-month test interval was approved February 17, 1994 (Reference 2). This approved analysis confirmed performance of testing on a six-month interval resulted in negligible change in core damage frequency. The review of this analysis confirmed that the alternative testing frequency for IST requirements will provide an essentially equivalent level of safety for the RHR pumps and system.

The RHR system, including the RHR pumps, continues to be used as designed with no change in function or performance. The pumps have performed well in the third interval with no test results entering the alert or unacceptable bands. The risk metrics for the RHR pumps remain consistent with the values used in the original risk analysis. Therefore, the basis of the change in relation to the acceptance of minimal change in plant risk.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 36 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests Since the proposed change in the RHR pumps surveillance interval represents a negligible change in core damage frequency, the alternative testing frequency for the IST requirements will provide an essentially equivalent level of safety for these pumps.

Conclusion:

STPNOC proposed to test the RHR pumps by performing a Group A test on a six-month frequency. Given the negligible change in core damage frequency determined in Reference 2, this proposed change provides an acceptable level of quality and safety pursuant to 10 CFR 50.55a(z)(1).

6. Duration of Proposed Alternative The proposed alternative will be implemented from the end of the Third Interval (September 25, 2020) through the end of the Fourth Interval (September 24, 2030).

7. Precedent NRC Safety Evaluation for South Texas Project Technical Specification Amendments 59 and 47 and related relief requests. In this Safety Evaluation, the NRC granted relief from the IWP-3400(a) RHR pump testing requirements, allowing a testing frequency extension for these pumps from three to six months (Reference 2).

NRC Safety Evaluation of Relief Requests for Second 10-Year Interval of the IST Program for South Texas Project (STP), Units Nos. 1 and 2 (TAC. Nos. MB2136 and MB2137). May 2, 2003. Previously approved as PRR-01. (Reference 3)

NRC approval of STP Relief Request PRR-03 for extension of the third 10-year IST interval for the RHR pumps (Reference 4).

8. References

1. ASME OM-2012, Operation and Maintenance of Nuclear Power Plants

2. Letter from S.C. Black, NRC, to W.T. Cottle, Houston Lighting & Power, Issuance of Amendment Nos. NPF-76 and NPF-80 and Related Relief Requests - South Texas Project, Units 1 and 2 (TAC Nos.

M76048 and M76049), February 17, 1994, ML02130134

3. NRC Safety Evaluation of Relief Requests for Second 10-Year Interval of the IST Program for South Texas Project (STP), Units Nos. 1 and 2 (TAC. Nos. MB2136 and MB2137). May 2, 2003. Previously approved as PRR-01.

4. Letter from M.T. Markley, NRC, to E.D. Halpin, STPNOC, South Texas Project, Units 1 and 2 - Relief Request Nos. VRR-01, PRR-01, PRR-02, and PRR-03 for the Third 10-Year Inservice Testing Program Interval (TAC Nos. ME3515, ME3516, ME3517, ME3518, ME3519, ME3520, ME3521, and ME3522), September 2, 2010, ML102150077

5. ML20199M162 South Texas Project, Units 1 And 2 - Proposed Alternatives PRR-01, PRR-02, PRR-03, and PRR-04 To The Requirements Of The ASME OM Code (EPIDS L-2020-LLR-0007 TO L-2020-LLR-0010), dated July 21, 2020

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 37 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests PUMP RELIEF REQUEST PRR-04 Use of Code Case OMN-22 Proposed Alternative in Accordance with 10CFR50.55a(a)(3)(i) on the basis that the proposed alternative provides an acceptable level of quality and safety Reference 1 approved the use of this Alternative.

1. ASME Code Component(s) Affected All pumps in the IST Program with vibration reference values of <0.05 inches per second (ips). See Table 1 for the initial list of pumps relief is being requested for.

Function:

The Table 1 pumps are required to perform a specific function in shutting down the reactor to a safe shutdown, maintaining a safe shutdown condition or in mitigating the consequences of an accident.

2. Applicable Code Edition and Addenda

American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance of Nuclear Power Plants (OM Code) 2012 Edition.

3. Applicable Code Requirement

ISTB-3300(a), Reference Values initial reference values shall be determined from the results of testing meeting the requirements to ISTB-3100, Preservice Testing, or from the results of the first inservice test.

Table ISTB-5121-1, Centrifugal Pump Test Acceptance Criteria Alert Range and Required Action Range.

Table ISTB-5221-1, Vertical Line Shaft Centrifugal Pump Test Acceptance Criteria Alert Range and Required Action Range.

Table ISTB-5321-1, Positive Displacement Pump (Except Reciprocating) Test Acceptance Criteria Alert Range and Required Action Range.

Table ISTB-5321-2, Reciprocating Positive Displacement Pump Test Acceptance Criteria Alert Range and Required Action Range.

4. Reason for Request

The ASME Code committees have approved Code Case OMN-22, Smooth Running Pumps. This Code Case has not been approved for use in Regulatory Guide 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, Revision 2, March 2017. This Code Case has been approved by ASME and is scheduled to be published with the 2020 Edition of the OM Code.

This Code Case allows tor alternative requirements for use with smooth running pumps in lieu of the applicable Code reference value paragraph in Subsections ISTB in the ASME OM Code and the applicable pump test acceptance criteria tables in the ASME OM Code. For the OM Code-2012, no allowance is made for smooth running pumps and by applying the 2.5Vr, the pump may fail before reaching the alert range if the normal vibration level is 0.050 in/sec or lower. Smooth running pumps have a much lower reference value for stable operation and the ranges for acceptable range and higher levels listed in the Alert Range do not allow for adequate vibration monitoring techniques to be applied to smooth running pumps.

Guidelines set forth in Code Case OMN-22, Smooth Running Pumps allow for a very low baseline vibration value with a pump vibration velocity of 0.050 in/sec when establishing the vibration reference value, which allows for trending of the pump vibration on a much lower scale than what is currently allowed. ASME OM Code Case OMN-22, Smooth Running Pumps has not been approved by the NRC and a relief request is required for use of this Code Case.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 38 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests

5. Proposed Alternative and Basis for Use STPEGS proposed to utilize the provisions of Code Case OMN-22, Smooth Running Pumps. For those pumps with very low vibration values, the following vibration velocity criteria shall be applied to any vibration test points qualifying for the use of the minimum reference value:

Acceptable Range: 0.125 in/sec Alert Range: > 0.125 in/sec to 0.300 in/sec Required Action Range: > 0.300 in/sec Supplemental Monitoring Pumps that will use the "minimum reference" value for one or more vibration points shall be included in the Owners Predictive Maintenance (PdM) program. The PdM program shall apply predictive monitoring techniques and perform vibration analysis beyond the trending of vibration levels specified in the ASME OM Code to provide early identification of pump performance issues. The Owner shall determine which PdM Supplemental Monitoring activities will be utilized on the pump.

At a minimum, the Owner shall perform spectral analysis of measured vibration of the applicable pumps.

The Owner shall document the conclusion of the PdM performance analysis on the pump test record prior to the subsequent test with a conclusion of acceptable, degrading but acceptable, or unacceptable.

Corrective action shall be initiated when an unacceptable trend in performance is identified Corrective Action If a measured pump vibration parameter falls within the alert range or the required action range specified above, then the Owner shall follow the required actions within the edition/addenda of the applicable Code (for example, ISTB-6200 or ISTF-6200 for the 2015 Edition of the ASME OM Code).

The alert and required action ranges are established in accordance with this Code Case rather than the referenced pump tables.

If a PdM Supplemental Monitoring activity identifies a parameter outside the normal operating range or identifies a trend toward an unacceptable degraded state, action shall be taken to (1) identify and document the condition in the corrective action program established in accordance with the Owner's Quality Assurance Program, (2) increase monitoring to establish the rate of change of the monitored parameter, (3) review component-specific information to identify the degradation cause, (4) develop a plan to remove the pump from service to perform maintenance prior to significant performance degradation, and (5) address potential common cause issues applicable to other pumps based on the results of the analysis of the specific pump performance.

Using the provisions of this relief request as an alternative to the requirements of ISTB-3300 provides a reasonable alternative to the ASME OM Code requirements. Based on the determination and the proposed alternative provides an acceptable level of quality and safety. The 2012 Edition of the OM Code, has not been revised to include this allowance. A similar allowance was part of the IWP test requirements under Section XI, but were not included in the tables when OM Part 10 was created as part of the OM Code.

Conclusion:

In summary, South Texas Project proposed to test the pumps listed in this request by implementing the requirements of ASME OM Code Case OMN-22 and requires NRC approval to implement this change since Code Case OMN-22 is not listed in Regulatory Guide 1.192.

Using the provisions of this request will provide adequate detection of component degradation and, would continue to provide reasonable assurance of the operational readiness of affected STPEGS components.

Therefore, compliance with the requirements of ASME OM Code Case OMN-22 would result in an acceptable level of quality and safety pursuant to 10 CFR 50.55a(z)(1).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 39 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests

6. Duration of Proposed Alternative The proposed alternative will be implemented from the end of the Third Interval (September 25, 2020) until the end of the Fourth Interval (September 24, 2030).

7. Precedent ML18290A602, Millstone 2 P-02 and Millstone 3 P-03, Smooth Running Pumps, for pumps with measured reference value below 0.05 ips, approved by NRC, November 2018.

ML17219A123, James A. Fitzpatrick, PRR-02, RHRSW pumps apply minimum value for Vr of 0.05 ips, with 0.125 ips and 0.300 ips as Alert and Required Action Ranges, submitted August 3, 2017

8. References

1. ML20199M162 South Texas Project, Units 1 And 2 - Proposed Alternatives PRR-01, PRR-02, PRR-03, and PRR-04 to the Requirements of the ASME OM Code (EPIDS L-2020-LLR-0007 TO L-2020-LLR-0010), dated July 21, 2020

2. ASME OM Code-2012, Code Case OMN-22, Smooth Running Pumps Table 1: Initial scope of PRR-04*

Pump Description TPNS ASME Class CENTRIFUGAL CHARGING PUMP 1A 2R171NPA101A 2 CENTRIFUGAL CHARGING PUMP 1B 2R171NPA101B 2 CENTRIFUGAL CHARGING PUMP 2A 2R172NPA201A 2 ESSENTIAL CHILL WATER PUMP 11A 3V111VPA004 3 ESSENTIAL CHILL WATER PUMP 11B 3V111VPA005 3 ESSENTIAL CHILL WATER PUMP 11C 3V111VPA006 3 ESSENTIAL CHILL WATER PUMP 21A 3V112VPA004 3 ESSENTIAL CHILL WATER PUMP 21B 3V112VPA005 3 ESSENTIAL CHILL WATER PUMP 21C 3V112VPA006 3 ESSENTIAL COOLING WATER PUMP 1A 3R281NPA101A 3 ESSENTIAL COOLING WATER PUMP 1B 3R281NPA101B 3 ESSENTIAL COOLING WATER PUMP 1C 3R281NPA101C 3 ESSENTIAL COOLING WATER PUMP 2A 3R282NPA201A 3 ESSENTIAL COOLING WATER PUMP 2B 3R282NPA201B 3 ESSENTIAL COOLING WATER PUMP 2C 3R282NPA201C 3 LOW HEAD SAFETY INJECTION PUMP 1A 2N121NPA102A 2 LOW HEAD SAFETY INJECTION PUMP 1B 2N121NPA102B 2 LOW HEAD SAFETY INJECTION PUMP 1C 2N121NPA102C 2 LOW HEAD SAFETY INJECTION PUMP 2A 2N122NPA202A 2 LOW HEAD SAFETY INJECTION PUMP 2B 2N122NPA202B 2 LOW HEAD SAFETY INJECTION PUMP 2C 2N122NPA202C 2 MOTOR DRIVEN AUX FEEDWATER PUMP NO. 11 3S141MPA01 3 MOTOR DRIVEN AUX FEEDWATER PUMP NO. 22 3S142MPA02 3 MOTOR DRIVEN AUX FEEDWATER PUMP NO. 23 3S142MPA03 3 TURBINE DRIVEN AUX FEEDWATER PUMP NO. 14 3S141MPA04 3 RESIDUAL HEAT REMOVAL PUMP 1A 2R161NPA101A 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 40 of 136 ATTACHMENT 5: Unit 1 and 2 Pump Relief Requests Pump Description TPNS ASME Class RESIDUAL HEAT REMOVAL PUMP 1B 2R161NPA101B 2 RESIDUAL HEAT REMOVAL PUMP 1C 2R161NPA101C 2 RESIDUAL HEAT REMOVAL PUMP 2A 2R162NPA201A 2 RESIDUAL HEAT REMOVAL PUMP 2B 2R162NPA201B 2 RESIDUAL HEAT REMOVAL PUMP 2C 2R162NPA201C 2 SPENT FUEL COOLING PUMP 1A 3R211NPA101A 3 SPENT FUEL COOLING PUMP 1B 3R211NPA101B 3 SPENT FUEL COOLING PUMP 2A 3R212NPA201A 3 SPENT FUEL COOLING PUMP 2B 3R212NPA201B 3

Scope may change based on future reference values tests. *****

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 41 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 1N121XSI0007A HI HEAD SAFETY INJECTION 5N129F05013#1 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1A DISCHARGE TO / E-7 CV-C CM 0PSP03-SI-0023 LOOP 1A COLD LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0007B HI HEAD SAFETY INJECTION 5N129F05014#1 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1B DISCHARGE TO / F-7 CV-C CM 0PSP03-SI-0023 LOOP 1B COLD LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0007C HI HEAD SAFETY INJECTION 5N129F05015#1 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1C DISCHARGE TO / E-7 CV-C CM 0PSP03-SI-0023 LOOP 1C COLD LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0009A HI HEAD SAFETY INJECTION 5N129F05013#1 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1A DISCHARGE TO / F-7 CV-C CM 0PSP03-SI-0023 LOOP 1A HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0009B HI HEAD SAFETY INJECTION 5N129F05014#1 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1B DISCHARGE TO / G-7 CV-C CM 0PSP03-SI-0023 LOOP 1B HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0009C HI HEAD SAFETY INJECTION 5N129F05015#1 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1C DISCHARGE TO / F-7 CV-C CM 0PSP03-SI-0023 LOOP 1C HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0010A HI HEAD SAFETY INJECTION 5N129F05013#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1A DISCHARGE TO / F-8 CV-C CM 0PSP03-SI-0023 LOOP 1A HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0010B HI HEAD SAFETY INJECTION 5N129F05014#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1B DISCHARGE TO / G-8 CV-C CM 0PSP03-SI-0023 LOOP 1B HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0010C HI HEAD SAFETY INJECTION 5N129F05015#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 1C DISCHARGE TO / F-8 CV-C CM 0PSP03-SI-0023 LOOP 1C HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N121XSI0038A SAFETY INJECTION TRAIN A 5N129F05016#1 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TO LOOP 1A COLD LEG / F-7 CV-C CM 0PSP03-SI-0023 INJECTION CHECK VALVE CV-O CM 0PSP03-SI-0029 1N121XSI0038B SAFETY INJECTION TRAIN B 5N129F05016#1 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TO LOOP 1B COLD LEG / D-7 CV-C CM 0PSP03-SI-0023 INJECTION CHECK VALVE CV-O CM 0PSP03-SI-0029 1N121XSI0038C SAFETY INJECTION TRAIN C 5N129F05016#1 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMPS TO LOOP 1C COLD / B-7 CV-C CM 0PSP03-SI-0023 LEG INJECTION CHECK VALVE CV-O CM 0PSP03-SI-0029 1N121XSI0046A SAFETY INJECTION 5N129F05016#1 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 ACCUMULATOR 1A OUTLET / F-6 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1N121XSI0046B SAFETY INJECTION 5N129F05016#1 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 ACCUMULATOR 1B OUTLET / D-7 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1N121XSI0046C SAFETY INJECTION 5N129F05016#1 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 ACCUMULATOR 1C OUTLET / B-7 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1R141XRC0001A PRESSURIZER PORV PCV- 5R149F05003#1 B Active 1 3 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 0655A ISOLATION VALVE / E-7 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 1R141XRC0001A PRESSURIZER PORV PCV- 5R149F05003#1 B Active 1 3 GT MOH O O/C FAI ET-C Q 0PSP03-RC-0009 0655A ISOLATION VALVE / E-7 ET-O Q 0PSP03-RC-0009 1R141XRC0001B PRESSURIZER PORV PCV- 5R149F05003#1 B Active 1 3 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 0656A ISOLATION VALVE / E-8 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RC-0009 ET-O Q 0PSP03-RC-0009 1R161XRH0020A LO HEAD SAFETY INJECTION 5R169F20000#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN A TO LOOP 1A HOT / C-2 CV-C CM 0PSP03-SI-0023 LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1R161XRH0020B LO HEAD SAFETY INJECTION 5R169F20000#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN B TO LOOP 1B HOT / E-2 CV-C CM 0PSP03-SI-0023 LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1R161XRH0020C LO HEAD SAFETY INJECTION 5R169F20000#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN C TO LOOP 1C HOT / H-2 CV-C CM 0PSP03-SI-0023 LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1R161XRH0032A LO HEAD SAFETY INJECTION 5R169F20000#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN A TO LOOP 1A COLD / B-2 CV-C CM 0PSP03-SI-0023 LEG CHECK VALVE CV-O CM 0PSP03-RH-0007 1R161XRH0032B LO HEAD SAFETY INJECTION 5R169F20000#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN B TO LOOP 1B COLD / D-2 CV-C CM 0PSP03-SI-0023 LEG CHECK VALVE CV-O CM 0PSP03-RH-0007

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 42 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 1R161XRH0032C LO HEAD SAFETY INJECTION 5R169F20000#1 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN C TO LOOP 1C COLD / G-2 CV-C CM 0PSP03-SI-0023 LEG CHECK VALVE CV-O CM 0PSP03-RH-0007 1R161XRH0060A RHR PUMP 1A SUCTION 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010 FROM LOOP 1A HOT LEG / B-8 DIAG App3 0PSP11-ZE-0006 ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R161XRH0060B RHR PUMP 1B SUCTION 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010 FROM LOOP 1B HOT LEG / D-8 DIAG App3 0PSP11-ZE-0006 ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 1R161XRH0060B RHR PUMP 1B SUCTION 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI ET-C CS 0PSP03-RH-0007 CSJ-10 FROM LOOP 1B HOT LEG / D-8 ET-O CS 0PSP03-RH-0007 CSJ-10 ISOLATION MOV 1R161XRH0060C RHR PUMP 1C SUCTION 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010 FROM LOOP 1C HOT LEG / G-8 DIAG App3 0PSP11-ZE-0006 ISOLATION VALVE OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R161XRH0061A RHR PUMP 1A SUCTION MOV 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010

/ B-8 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R161XRH0061B RHR PUMP 1B SUCTION MOV 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010

/ D-8 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R161XRH0061C RHR PUMP 1C SUCTION MOV 5R169F20000#1 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010

/ G-8 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R171TCV0009 CVCS AUXILIARY SPRAY 5R179F05005#1 C Active 1 2 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / F-8 CV-O CM 0PSP03-CV-0011 1R171TCV0036A RCP 1A SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0036B RCP 1B SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0036C RCP 1C SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0036D RCP 1D SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0037A RCP 1A SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0037B RCP 1B SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0037C RCP 1C SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0037D RCP 1D SEAL #1 INJECTION 5R179F05005#1 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R171TCV0082 CVCS EXCESS LETDOWN HX 5R179F05005#1 B Active 1 2 D MOL O/C C FAI ET-C 2Y 0PSP03-CV-0012 INLET MOV / F-5 ET-O 2Y 0PSP03-CV-0012 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 1R171TCV0083 CVCS EXCESS LETDOWN 5R179F05005#1 B Active 1 2 D MOL O/C C FAI ET-C 2Y 0PSP03-CV-0012 LOOP 1D ISOLATION MOV / F-5 1R171TCV0083 CVCS EXCESS LETDOWN 5R179F05005#1 B Active 1 2 D MOL O/C C FAI ET-O 2Y 0PSP03-CV-0012 LOOP 1D ISOLATION MOV / F-5 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 43 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 1R171XCV0001 CVCS NORMAL CHARGING 5R179F05005#1 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 TO RCS LOOP 1A COLD LEG / G-8 CV-O CM 0PSP03-CV-0011 FIRST CHECK VALVE 1R171XCV0002 CVCS NORMAL CHARGING TO 5R179F05005#1 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 RCS LOOP 1A COLD LEG / G-8 CV-O CM 0PSP03-CV-0011 SECOND CHECK VALVE 1R171XCV0004 CVCS ALTERNATE CHARGING 5R179F05005#1 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 TO RCS LOOP 1C COLD LEG / F-8 CV-O CM 0PSP03-CV-0011 FIRST CHECK VALVE 1R171XCV0005 CVCS ALTERNATE CHARGING 5R179F05005#1 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 TO RCS LOOP 1C COLD LEG / F-8 CV-O CM 0PSP03-CV-0011 SECOND CHECK VALVE 1R171XCV0465 CVCS LETDOWN ISOLATION 5R179F05005#1 B Active 1 4 GT MOH O C FAI DIAG App3 0PSP11-ZE-0006 MOV / G-8 1R171XCV0465 CVCS LETDOWN ISOLATION 5R179F05005#1 B Active 1 4 GT MOH O C FAI OV-C App3 0PSP11-ZE-0006 MOV / G-8 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-01 ET-O CS 0PSP03-CV-0011 CSJ-01 1R171XCV0468 CVCS LETDOWN ISOLATION 5R179F05005#1 B Active 1 4 GT MOH O C FAI DIAG App3 0PSP11-ZE-0006 MOV / G-7 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-01 ET-O CS 0PSP03-CV-0011 CSJ-01 2N121TSI0011A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A MINIFLOW FIRST / F-4 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N121TSI0011B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B MINIFLOW FIRST / H-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121TSI0011C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C MINIFLOW FIRST / G-4 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N121TSI0011C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 1C MINIFLOW FIRST / G-4 ET-O Q 0PSP03-SI-0025 ISOLATION MOV 2N121TSI0012A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A MINIFLOW / F-4 OV-C App3 0PSP11-ZE-0006 SECOND ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N121TSI0012B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B MINIFLOW / H-3 OV-C App3 0PSP11-ZE-0006 SECOND ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N121TSI0012B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 1B MINIFLOW / H-3 ET-O Q 0PSP03-SI-0024 SECOND ISOLATION MOV 2N121TSI0012C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C MINIFLOW / G-3 OV-C App3 0PSP11-ZE-0006 SECOND ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N121TSI0013A LO HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A MINIFLOW / D-3 OV-C App3 0PSP11-ZE-0006 SECOND ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N121TSI0013A LO HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0020 PUMP 1A MINIFLOW / D-3 ET-O Q 0PSP03-SI-0020 SECOND ISOLATION MOV 2N121TSI0013B LO HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B MINIFLOW / E-3 OV-C App3 0PSP11-ZE-0006 SECOND ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121TSI0013C LO HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C MINIFLOW / D-3 OV-C App3 0PSP11-ZE-0006 SECOND ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 44 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2N121TSI0013C LO HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 1C MINIFLOW / D-3 ET-O Q 0PSP03-SI-0025 SECOND ISOLATION MOV 2N121TSI0014A LO HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A MINIFLOW FIRST / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N121TSI0014B LO HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B MINIFLOW FIRST / E-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N121TSI0014B LO HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 1B MINIFLOW FIRST / E-3 ET-O Q 0PSP03-SI-0024 ISOLATION MOV 2N121TSI0014C LO HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C MINIFLOW FIRST / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N121XSI0001A REFUELING WATER STORAGE 5N129F05013#1 B Active 2 16 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK SI PUMPS TRAIN A / G-3 OV-C App3 0PSP11-ZE-0006 SUCTION ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0001A REFUELING WATER STORAGE 5N129F05013#1 B Active 2 16 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0024 TANK SI PUMPS TRAIN A / G-3 ET-O Q 0PSP03-SI-0024 SUCTION ISOLATION MOV 2N121XSI0001B REFUELING WATER STORAGE 5N129F05014#1 B Active 2 16 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK SI PUMPS TRAIN B / H-2 OV-C App3 0PSP11-ZE-0006 SUCTION ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121XSI0001C REFUELING WATER STORAGE 5N129F05015#1 B Active 2 16 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK SI PUMPS TRAIN C / H-2 OV-C App3 0PSP11-ZE-0006 SUCTION ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0001C REFUELING WATER STORAGE 5N129F05015#1 B Active 2 16 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0025 TANK SI PUMPS TRAIN C / H-2 ET-O Q 0PSP03-SI-0025 SUCTION ISOLATION MOV 2N121XSI0002A REFUELING WATER STORAGE 5N129F05013#1 C Active 2 16 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 TANK SI PUMPS TRAIN A / G-3 CV-O CM 0PSP03-SI-0030 SUCTION CHECK VALVE 2N121XSI0002B REFUELING WATER STORAGE 5N129F05014#1 C Active 2 16 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 TANK SI PUMPS TRAIN B / H-2 CV-O CM 0PSP03-SI-0030 SUCTION CHECK VALVE 2N121XSI0002C REFUELING WATER STORAGE 5N129F05015#1 C Active 2 16 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 TANK SI PUMPS TRAIN C / H-2 CV-O CM 0PSP03-SI-0030 SUCTION CHECK VALVE 2N121XSI0004A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A DISCHARGE MOV / F-5 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0004A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0020 PUMP 1A DISCHARGE MOV / F-5 ET-O Q 0PSP03-SI-0020 (ORC) 2N121XSI0004B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B DISCHARGE MOV / G-4 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121XSI0004C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C DISCHARGE MOV / F-5 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0004C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 1C DISCHARGE MOV / F-5 ET-O Q 0PSP03-SI-0025 (ORC) 2N121XSI0005A HI HEAD SAFETY INJECTION 5N129F05013#1 C Active 2 6 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 1A DISCHARGE / F-6 CV-O CM 0PSP03-SI-0021 CHECK VALVE (IRC) 2N121XSI0005B HI HEAD SAFETY INJECTION 5N129F05014#1 C Active 2 6 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 1B DISCHARGE / G-4 CV-O CM 0PSP03-SI-0021 CHECK VALVE (IRC) 2N121XSI0005C HI HEAD SAFETY INJECTION 5N129F05015#1 C Active 2 6 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 1C DISCHARGE / F-5 CV-O CM 0PSP03-SI-0021 CHECK VALVE (IRC)

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 45 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2N121XSI0006A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A DISCHARGE TO / E-7 OV-C App3 0PSP11-ZE-0006 LOOP 1A COLD LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0006A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 1A DISCHARGE TO / E-7 ET-O Q 0PSP03-SI-0024 LOOP 1A COLD LEG ISOLATION MOV 2N121XSI0006B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B DISCHARGE TO / F-7 OV-C App3 0PSP11-ZE-0006 LOOP 1B COLD LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121XSI0006C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C DISCHARGE TO / E-7 OV-C App3 0PSP11-ZE-0006 LOOP 1C COLD LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0006C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 1C DISCHARGE TO / E-7 ET-O Q 0PSP03-SI-0025 LOOP 1C COLD LEG ISOLATION MOV 2N121XSI0008A HI HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 6 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A DISCHARGE TO / F-7 OV-C App3 0PSP11-ZE-0006 LOOP 1 HOT LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121XSI0008B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 6 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B DISCHARGE TO / G-7 OV-C App3 0PSP11-ZE-0006 LOOP 1B HOT LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0008B HI HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 6 GT MOH C O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 1B DISCHARGE TO / G-7 ET-O Q 0PSP03-SI-0024 LOOP 1B HOT LEG ISOLATION MOV 2N121XSI0008C HI HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 6 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C DISCHARGE TO / F-7 OV-C App3 0PSP11-ZE-0006 LOOP 1C HOT LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N121XSI0016A CONTAINMENT EMERGENCY 5N129F05013#1 B Active 2 16 GT MOH C O/C FAI LT 2Y 0PSP11-SI-0001 SUMP 1A TO SI TRAIN A / B-4 DIAG App3 0PSP11-ZE-0006 PUMPS SUCTION ORC ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 2N121XSI0016A CONTAINMENT EMERGENCY 5N129F05013#1 B Active 2 16 GT MOH C O/C FAI RPI App3 0PSP11-ZE-0001 SUMP 1A TO SI TRAIN A / B-4 ET-C Q 0PSP03-SI-0020 PUMPS SUCTION ORC ISOLATION MOV ET-O Q 0PSP03-SI-0020 2N121XSI0016B CONTAINMENT EMERGENCY 5N129F05014#1 B Active 2 16 GT MOH C O/C FAI LT 2Y 0PSP11-SI-0002 SUMP 1B TO SI TRAIN B / B-4 DIAG App3 0PSP11-ZE-0006 PUMPS SUCTION ORC ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N121XSI0016C CONTAINMENT EMERGENCY 5N129F05015#1 B Active 2 16 GT MOH C O/C FAI LT 2Y 0PSP11-SI-0003 SUMP 1C TO SI TRAIN C / B-4 DIAG App3 0PSP11-ZE-0006 PUMPS SUCTION ORC ISOLATION MOV 2N121XSI0016C CONTAINMENT EMERGENCY 5N129F05015#1 B Active 2 16 GT MOH C O/C FAI OV-C App3 0PSP11-ZE-0006 SUMP 1C TO SI TRAIN C / B-4 OV-O App3 0PSP11-ZE-0006 PUMPS SUCTION ORC ISOLATION MOV RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N121XSI0018A LO HEAD SAFETY INJECTION 5N129F05013#1 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1A DISCHARGE MOV / C-4 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N121XSI0018B LO HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1B DISCHARGE MOV / D-4 (ORC) 2N121XSI0018B LO HEAD SAFETY INJECTION 5N129F05014#1 B Active 2 8 GT MOH O O/C FAI OV-C App3 0PSP11-ZE-0006 PUMP 1B DISCHARGE MOV / D-4 OV-O App3 0PSP11-ZE-0006 (ORC)

RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 46 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2N121XSI0018C LO HEAD SAFETY INJECTION 5N129F05015#1 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 1C DISCHARGE MOV / D-4 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N121XSI0030A LO HEAD SAFETY INJECTION 5N129F05013#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 1A DISCHARGE / D-5 CHECK VALVE (IRC) 2N121XSI0030A LO HEAD SAFETY INJECTION 5N129F05013#1 C Active 2 8 CK SA C O/C N/A CV-O CM 0PSP03-SI-0021 PUMP 1A DISCHARGE / D-5 CHECK VALVE (IRC) 2N121XSI0030B LO HEAD SAFETY INJECTION 5N129F05014#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 1B DISCHARGE / D-4 CV-O CM 0PSP03-SI-0021 CHECK VALVE (IRC) 2N121XSI0030C LO HEAD SAFETY INJECTION 5N129F05015#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 1C DISCHARGE / D-4 CV-O CM 0PSP03-SI-0021 CHECK VALVE (IRC) 2N121XSI0039A SAFETY INJECTION 5N129F05016#1 B Active 2 12 GT MOL O O/C FAI ET-C 2Y 0PSP03-SI-0028 ACCUMULATOR 1A OUTLET / F-5 ET-O 2Y 0PSP03-SI-0028 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0039B SAFETY INJECTION 5N129F05016#1 B Active 2 12 GT MOL O O/C FAI ET-C 2Y 0PSP03-SI-0028 ACCUMULATOR 1B OUTLET / D-5 ET-O 2Y 0PSP03-SI-0028 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N121XSI0039C SAFETY INJECTION 5N129F05016#1 B Active 2 12 GT MOL O O/C FAI ET-C 2Y 0PSP03-SI-0028 ACCUMULATOR 1C OUTLET / B-5 ET-O 2Y 0PSP03-SI-0028 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2Q271TFP0756 REACTOR CONTAINMENT 5Q279F05047#1 A Active 2 6 GT MOL- C C FAI ET-C 2Y 0PSP03-FP-0001 BUILDING FIRE PROTECTION / E-8 C ET-O 2Y 0PSP03-FP-0001 HEADER ISOLATION MOV ST-C 2Y 0PSP03-FP-0001 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 Q271TFP0756 REACTOR CONTAINMENT 5Q279F05047#1 A Active 2 6 GT MOL- C C FAI RPI App3 0PSP11-ZE-0006 BUILDING FIRE PROTECTION / E-8 C LTJ AppJ 0PSP11-FP-0001 HEADER ISOLATION MOV 2Q271TFP0943 REACTOR CONTAINMENT 5Q279F05047#1 A/C Active 2 6 CK SA C C N/A LTJ AppJ 0PSP11-FP-0001 BUILDING FIRE PROTECTION / E-8 BD-O CM 0PSP11-FP-0001 HEADER CONTAINMENT ISOL CHECK VALVE CV-C CM 0PSP11-FP-0001 2R161XRH0019A LO HEAD SAFETY INJECTION 5R169F20000#1 B Active 2 8 GT MOH LC O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN A TO LOOP 1A HOT / C-3 OV-C App3 0PSP11-ZE-0006 LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R161XRH0019B LO HEAD SAFETY INJECTION 5R169F20000#1 B Active 2 8 GT MOH LC O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN B TO LOOP 1B HOT / E-3 OV-C App3 0PSP11-ZE-0006 LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R161XRH0019C LO HEAD SAFETY INJECTION 5R169F20000#1 B Active 2 8 GT MOH LC O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN C TO LOOP 1C HOT / H-3 OV-C App3 0PSP11-ZE-0006 LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R161XRH0031A LO HEAD SAFETY INJECTION 5R169F20000#1 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN A TO LOOP 1A COLD / B-3 OV-C App3 0PSP11-ZE-0006 LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R161XRH0031B LO HEAD SAFETY INJECTION 5R169F20000#1 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN B TO LOOP 1B COLD / D-3 OV-C App3 0PSP11-ZE-0006 LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 47 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2R161XRH0031C LO HEAD SAFETY INJECTION 5R169F20000#1 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN C TO LOOP 1C COLD / G-3 OV-C App3 0PSP11-ZE-0006 LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R161XRH0063B RHR LOOP 1B RETURN TO 5R169F20000#1 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0002 RWST IRC ISOLATION VALVE / D-6 2R161XRH0063C RHR LOOP 1C RETURN TO 5R169F20000#1 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0003 RWST IRC ISOLATION VALVE / F-6 2R161XRH0064B RHR LOOP 1B RETURN TO 5R169F20000#1 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0002 RWST ORC ISOLATION VALVE / D-5 2R161XRH0064C RHR LOOP 1C RETURN TO 5R169F20000#1 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0003 RWST ORC ISOLATION VALVE / F-5 2R161XRH0065A RHR PUMP 1A DISCHARGE 5R169F20000#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / B-6 CV-O CM 0PSP03-RH-0001 2R161XRH0065B RHR PUMP 1B DISCHARGE 5R169F20000#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / D-6 CV-O CM 0PSP03-RH-0002 2R161XRH0065C RHR PUMP 1C DISCHARGE 5R169F20000#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / G-6 CV-O CM 0PSP03-RH-0003 2R161XRH0066A RHR LOOP 1A DISCHARGE 5R169F20000#1 B Passive 2 4 GT MO C C FAI OV-C 2Y 0PSP11-ZE-0006 TO CVCS LETDOWN / A-4 OV-O 2Y 0PSP11-ZE-0006 ISOLATION MOV RPI 2Y 0PSP11-ZE-0006 2R161XRH0066B RHR LOOP 1B DISCHARGE TO 5R169F20000#1 B Passive 2 4 GT MO C C FAI OV-C 2Y 0PSP11-ZE-0006 CVCS LETDOWN ISOLATION / D-2 OV-O 2Y 0PSP11-ZE-0006 MOV RPI 2Y 0PSP11-ZE-0006 2R161XRH0067A RHR PUMP 1A MINIFLOW MOV 5R169F20000#1 B Active 2 4 GT MOL C O/C FAI ET-C 2Y 0PSP03-RH-0009

/ A-6 ET-O 2Y 0PSP03-RH-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R161XRH0067B RHR PUMP 1B MINIFLOW MOV 5R169F20000#1 B Active 2 4 GT MOL C O/C FAI ET-C 2Y 0PSP03-RH-0009

/ D-6 ET-O 2Y 0PSP03-RH-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 2R161XRH0067B RHR PUMP 1B MINIFLOW MOV 5R169F20000#1 B Active 2 4 GT MOL C O/C FAI RPI App3 0PSP11-ZE-0006

/ D-6 2R161XRH0067C RHR PUMP 1C MINIFLOW MOV 5R169F20000#1 B Active 2 4 GT MOL C O/C FAI ET-C 2Y 0PSP03-RH-0009

/ F-6 ET-O 2Y 0PSP03-RH-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R161XRH0068A RHR PUMP 1A MINIFLOW 5R169F20000#1 C Active 2 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / A-6 CV-O CM 0PSP03-RH-0001 2R161XRH0068B RHR PUMP 1B MINIFLOW 5R169F20000#1 C Active 2 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / D-6 CV-O CM 0PSP03-RH-0002 2R161XRH0068C RHR PUMP 1C MINIFLOW 5R169F20000#1 C Active 2 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / F-6 CV-O CM 0PSP03-RH-0003 2R171TCV0033A RCP 1A SEAL #1 INJECTION 5R179F05005#1 B Active 2 2 D MOL O O/C FAI ET-C 2Y 0PSP03-CV-0011 ORC CONTAINMENT / C-8 - C ET-O 2Y 0PSP03-CV-0011 ISOLATION MOV ST-C 2Y 0PSP03-CV-0011 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R171TCV0033B RCP 1B SEAL #1 INJECTION 5R179F05005#1 B Active 2 2 D MOL- O O/C FAI ET-C 2Y 0PSP03-CV-0011 ORC CONTAINMENT / C-8 C ET-O 2Y 0PSP03-CV-0011 ISOLATION MOV ST-C 2Y 0PSP03-CV-0011 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R171TCV0033C RCP 1C SEAL #1 INJECTION 5R179F05005#1 B Active 2 2 D MOL O O/C FAI ET-C 2Y 0PSP03-CV-0011 ORC CONTAINMENT / C-8 - C ET-O 2Y 0PSP03-CV-0011 ISOLATION MOV ST-C 2Y 0PSP03-CV-0011 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R171TCV0033D RCP 1D SEAL #1 INJECTION 5R179F05005#1 B Active 2 2 D MOL- O O/C FAI ET-C 2Y 0PSP03-CV-0011 ORC CONTAINMENT / C-8 C ET-O 2Y 0PSP03-CV-0011 ISOLATION MOV ST-C 2Y 0PSP03-CV-0011

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 48 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2R171TCV0033D RCP 1D SEAL #1 INJECTION 5R179F05005#1 B Active 2 2 D MOL- O O/C FAI DIAG App3 0PSP11-ZE-0006 ORC CONTAINMENT / C-8 C OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R171TCV0034A RCP 1A SEAL #1 INJECTION 5R179F05005#1 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 IRC CONTAINMENT / C-8 CV-O CM 0PSP03-CV-0012 ISOLATION CHECK VALVE 2R171TCV0034B RCP 1B SEAL #1 INJECTION 5R179F05005#1 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 IRC CONTAINMENT / C-8 CV-O CM 0PSP03-CV-0012 ISOLATION CHECK VALVE 2R171TCV0034C RCP 1C SEAL #1 INJECTION 5R179F05005#1 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 IRC CONTAINMENT / C-8 CV-O CM 0PSP03-CV-0012 ISOLATION CHECK VALVE 2R171TCV0034D RCP 1D SEAL #1 INJECTION 5R179F05005#1 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 IRC CONTAINMENT / C-8 CV-O CM 0PSP03-CV-0012 ISOLATION CHECK VALVE 2R171TCV0243 POSITIVE DISPLACEMENT 5R179F05007#1 C Active 2 2 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 PUMP DISCHARGE CHECK / B-6 CV-C CM 0PSP11-ZE-0001 VALVE 2R171XCV0003 CVCS NORMAL CHARGING 5R179F05005#1 B Active 2 4 GT MOH O/C O/C FAI DIAG App3 0PSP11-ZE-0006 TO RCS LOOP 1A COLD LEG / G-7 OV-C App3 0PSP11-ZE-0006 MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C R 0PSP03-CV-0011 ROJ-03 ET-O R 0PSP03-CV-0011 ROJ-03 2R171XCV0006 CVCS ALTERNATE CHARGING 5R179F05005#1 B Active 2 4 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 TO RCS LOOP 1C COLD LEG / F-7 OV-C App3 0PSP11-ZE-0006 MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C R 0PSP03-CV-0011 ROJ-03 ET-O R 0PSP03-CV-0011 ROJ-03 2R171XCV0025 CVCS CHARGING ORC 5R179F05005#1 B Active 2 4 GT MOH- O O/C FAI DIAG App3 0PSP11-ZE-0006 CONTAINMENT ISOLATION / G-3 C OV-C App3 0PSP11-ZE-0006 MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-01 2R171XCV0025 CVCS CHARGING ORC 5R179F05005#1 B Active 2 4 GT MOH- O O/C FAI ET-O CS 0PSP03-CV-0011 CSJ-01 CONTAINMENT ISOLATION / G-3 C ST-C CS 0PSP03-CV-0011 CSJ-01 MOV 2R171XCV0026 CVCS CHARGING IRC 5R179F05005#1 C Active 2 4 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CONTAINMENT ISOLATION / G-3 CV-O CM 0PSP03-CV-0012 CHECK VALVE 2R171XCV0112B CVCS VOLUME CONTROL 5R179F05007#1 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK OUTLET MOV / E-4 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-02 ET-O CS 0PSP03-CV-0011 CSJ-02 2R171XCV0113A CVCS VOLUME CONTROL 5R179F05007#1 B Active 2 6 GT MOH O/C O/C FAI DIAG App3 0PSP11-ZE-0006 TANK OUTLET MOV / E-4 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-02 ET-O CS 0PSP03-CV-0011 CSJ-02 2R171XCV0212 CVCS VOLUME CONTROL 5R179F05007#1 C Active 2 6 CK SA O O N/A BD-C CM 0PSP11-ZE-0001 TANK OUTLET CHECK VALVE / E-4 CV-O CM 0PSP11-ZE-0001 2R171XCV0670 CVCS CHARGING HEADER 5R179F05007#1 C Active 2 4 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / D-6 CV-O CM 0PSP03-CV-0012 2R201TCC0013 RHR TRAIN A CCW SUPPLY 5R209F05017#1 A/C Active 2 16 CK SA C O/C N/A LTJ AppJ 0PSP11-CC-0007 IRC CHECK VALVE / E-2 CV-C CM 0PSP11-CC-0007 CV-O CM 0PSP03-CC-0001 2R201TCC0123 RHR TRAIN B CCW SUPPLY 5R209F05018#1 A/C Active 2 16 CK SA C O/C N/A LTJ AppJ 0PSP11-CC-0009 IRC CHECK VALVE / E-2 CV-C CM 0PSP11-CC-0009 CV-O CM 0PSP03-CC-0002 2R201TCC0183 RHR TRAIN C CCW SUPPLY 5R209F05019#1 A/C Active 2 16 CK SA C O/C N/A LTJ AppJ 0PSP11-CC-0011 IRC CHECK VALVE / E-2 CV-C CM 0PSP11-CC-0011 CV-O CM 0PSP03-CC-0003 2S101TMS0021 S/G 1A MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / H-6 ET-O 2Y 0PSP03-MS-0001 2S101TMS0038 S/G 1B MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / F-6 ET-O 2Y 0PSP03-MS-0001 2S101TMS0055 S/G 1C MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / E-6 ET-O 2Y 0PSP03-MS-0001 2S101TMS0072 S/G 1D MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / C-6 ET-O 2Y 0PSP03-MS-0001 2S131TAF0308 SG 1D PREHTR BYPASS LINE 5S139F00063#1 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VLV / F-2 CV-C CM 0PSP11-ZE-0001 2S131TAF0309 SG 1A PREHTR BYPASS LINE 5S139F00063#1 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VLV / F-8 CV-C CM 0PSP11-ZE-0001

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 49 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2S131TAF0310 SG 1B PREHTR BYPASS LINE 5S139F00063#1 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VLV / F-6 CV-C CM 0PSP11-ZE-0001 2S131TAF0311 SG 1C PREHTR BYPASS LINE 5S139F00063#1 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VLV / F-4 CV-C CM 0PSP11-ZE-0001 2S131TFW0062 STEAM GENERATOR 1A 5S139F00063#1 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK / H-8 CV-C CM 0PSP11-ZE-0001 VALVE 2S131TFW0066 STEAM GENERATOR 1B 5S139F00063#1 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK / H-6 CV-C CM 0PSP11-ZE-0001 VALVE 2S131TFW0067 STEAM GENERATOR 1C 5S139F00063#1 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK / H-4 VALVE CV-C CM 0PSP11-ZE-0001 2S131TFW0249 STEAM GENERATOR 1D 5S139F00063#1 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK / H-2 CV-C CM 0PSP11-ZE-0001 VALVE 2S141TAF0019 (OCIV) AFW TO SG 1D OCIV 5S141F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 (AF- MOV-0019) / G-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0007 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 2S141TAF0048 (OCIV) AFW TO SG 1A OCIV 5S141F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 (AF- MOV-0048) / F-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0011 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 2S141TAF0065 (OCIV) AFW TO SG 1B OCIV 5S141F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 (AF- MOV-0065) / D-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0011 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 2S141TAF0085 STEAM GENERATOR 1C ORC 5S141F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 AFW ISOLATION MOV / B-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0011 ET-C Q 0PSP03-AF-0010 2S141TAF0085 STEAM GENERATOR 1C ORC 5S141F00024#1 B/C Active 2 4 SCK MOH C O/C FAI ET-O Q 0PSP03-AF-0010 AFW ISOLATION MOV / B-2 2S141TAF0119 (ICIV IMB) AFW TO SG 1A 5S141F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VLV / F-1 CV-O CM 0PSP03-AF-0011 2S141TAF0120 (ICIV IMB) AFW TO SG 1B 5S141F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VLV / D-1 CV-O CM 0PSP03-AF-0011 2S141TAF0121 (ICIV IMB) AFW TO SG 1C 5S141F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VLV / C-1 CV-O CM 0PSP03-AF-0011 2S141TAF0122 (ICIV IMB) AFW TO SG 1D 5S141F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VLV / H-1 CV-O CM 0PSP03-AF-0011 2S141TMS0143 TERRY TURBINE MAIN 5S141F00024#1 B/C Active 2 4 SCK MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 STEAM SUPPLY ORC / H-8 OV-C App3 0PSP03-AF-0007 ISOLATION MOV OV-O App3 0PSP03-AF-0007 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP03-AF-0007 CV-O CM 0PSP03-AF-0007 ET-C Q 0PSP03-AF-0007 ET-O Q 0PSP03-AF-0007 2V141THC0003 REACTOR CONTAINMENT 5V149V00019#1 A Active 2 18 B MOH- O/C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING SUPPLEMENTARY / F-3 C OV-C App3 0PSP11-ZE-0006 PURGE SUPPLY (IRC)

ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP03-HC-0003 ET-C Q 0PSP03-HC-0003 ET-O Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 2V141THC0005 REACTOR CONTAINMENT 5V149V00019#1 A Active 2 18 B MOH O/C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING SUPPLEMENTARY / B-7 -C PURGE EXHAUST (IRC)

ISOLATION DAMPER

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 50 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 2V141THC0005 REACTOR CONTAINMENT 5V149V00019#1 A Active 2 18 B MOH O/C C FAI OV-C App3 0PSP11-ZE-0006 BUILDING SUPPLEMENTARY / B-7 -C OV-O App3 0PSP11-ZE-0006 PURGE EXHAUST (IRC)

ISOLATION DAMPER RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP11-HC-0004 ET-C Q 0PSP03-HC-0003 ET-O Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 2V141ZHC0007 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH- C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-3 C OV-C App3 0PSP11-ZE-0006 SUPPLY (ORC) ISOLATION DAMPER 2V141ZHC0007 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH- C C FAI OV-O App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-3 C RPI App3 0PSP11-ZE-0006 SUPPLY (ORC) ISOLATION DAMPER LTJ AppJ 0PSP11-HC-0002 ET-C CS 0PSP03-HC-0004 CSJ-07 ET-O CS 0PSP03-HC-0004 CSJ-07 ST-C CS 0PSP03-HC-0004 CSJ-07 2V141ZHC0008 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-2 -C OV-C App3 0PSP11-ZE-0006 SUPPLY (IRC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 2V141ZHC0008 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH C C FAI RPI App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-2 -C LTJ AppJ 0PSP11-HC-0002 SUPPLY (IRC) ISOLATION DAMPER ET-C CS 0PSP03-HC-0004 CSJ-07 ET-O CS 0PSP03-HC-0004 CSJ-07 ST-C CS 0PSP03-HC-0004 CSJ-07 2V141ZHC0009 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH- C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / B-7 C OV-C App3 0PSP11-ZE-0006 EXHAUST (IRC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2V141ZHC0009 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH- C C FAI LTJ AppJ 0PSP11-HC-0002 BUILDING NORMAL PURGE / B-7 C ET-C CS 0PSP03-HC-0004 CSJ-07 EXHAUST (IRC) ISOLATION ET-O CS 0PSP03-HC-0004 CSJ-07 DAMPER ST-C CS 0PSP03-HC-0004 CSJ-07 2V141ZHC0010 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / B-6 -C OV-C App3 0PSP11-ZE-0006 EXHAUST (ORC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP11-HC-0001 2V141ZHC0010 REACTOR CONTAINMENT 5V149V00018#1 A Active 2 48 B MOH C C FAI ET-C CS 0PSP03-HC-0004 CSJ-07 BUILDING NORMAL PURGE / B-6 -C ET-O CS 0PSP03-HC-0004 CSJ-07 EXHAUST (ORC) ISOLATION ST-C CS 0PSP03-HC-0004 CSJ-07 DAMPER 3Q151XSD0003A STARTING AIR RECEIVER #11 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0027 INLET CHECK VALVE / E-7 CV-C CM 0PSP03-DG-0027 3Q151XSD0003B STARTING AIR RECEIVER #13 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0028 INLET CHECK VALVE / E-5 CV-C CM 0PSP03-DG-0028 3Q151XSD0003C STARTING AIR RECEIVER #15 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0029 INLET CHECK VALVE / E-2 CV-C CM 0PSP03-DG-0029 3Q151XSD0004A STARTING AIR RECEIVER #12 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0027 INLET CHECK VALVE / E-7 CV-C CM 0PSP03-DG-0027 3Q151XSD0004B STARTING AIR RECEIVER #14 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0028 INLET CHECK VALVE / E-4 CV-C CM 0PSP03-DG-0028 3Q151XSD0004C STARTING AIR RECEIVER #16 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0029 INLET CHECK VALVE / E-1 3Q151XSD0004C STARTING AIR RECEIVER #16 5Q159F22546#1 C Active 3 1 CK SA O/C C N/A CV-C CM 0PSP03-DG-0029 INLET CHECK VALVE / E-1 3R201TCC0051 CCW PUMP 1A COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 SUCTION HEADER CHECK / C-7 CV-O CM 0PSP03-CC-0001 VALVE 3R201TCC0052 CCW PUMP 1A COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0007 SUCTION HEADER / C-7 ET-O 2Y 0PSP03-CC-0007 ISOLATION MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0131 CCW PUMP 1B COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 HEADER SUCTION CHECK / C-7 CV-O CM 0PSP03-CC-0002 VALVE 3R201TCC0132 CCW PUMP 1B COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0008 HEADER SUCTION / C-7 ET-O 2Y 0PSP03-CC-0008 ISOLATION MOV 3R201TCC0132 CCW PUMP 1B COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI DIAG App3 0PSP11-ZE-0006 HEADER SUCTION / C-7 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0191 CCW PUMP 1C COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 SUCTION HEADER CHECK / B-7 CV-O CM 0PSP03-CC-0003 VALVE

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 51 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 3R201TCC0192 CCW PUMP 1C COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0009 SUCTION HEADER / B-7 ET-O 2Y 0PSP03-CC-0009 ISOLATION MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0311 CCW TRAIN C COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 HEADER SUPPLY CHECK / E-7 VALVE 3R201TCC0311 CCW TRAIN C COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-O CM 0PSP03-CC-0003 HEADER SUPPLY CHECK / E-7 VALVE 3R201TCC0312 CCW TRAIN C COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0009 HEADER SUPPLY MOV / E-7 ET-O 2Y 0PSP03-CC-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0313 CCW TRAIN B COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 HEADER SUPPLY CHECK / E-7 CV-O CM 0PSP03-CC-0002 VALVE 3R201TCC0314 CCW TRAIN B COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0008 HEADER SUPPLY MOV / E-7 ET-O 2Y 0PSP03-CC-0008 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0315 CCW TRAIN A COMMON 5R209F05020#1 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 SUPPLY HEADER CHECK / F-7 CV-O CM 0PSP03-CC-0001 VALVE 3R201TCC0316 CCW TRAIN A COMMON 5R209F05020#1 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0007 SUPPLY HEADER MOV / F-7 ET-O 2Y 0PSP03-CC-0007 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0642 CCW HEAT EXCHANGER 1A 5R209F05017#1 B Active 3 16 B MOL C O/C FAI ET-C 2Y 0PSP03-CC-0007 BYPASS MOV / A-6 ET-O 2Y 0PSP03-CC-0007 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0643 CCW HEAT EXCHANGER 1A 5R209F05017#1 B Active 3 24 B MOL O O FAI ET-C 2Y 0PSP03-CC-0007 OUTLET MOV / B-5 ET-O 2Y 0PSP03-CC-0007 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 3R201TCC0643 CCW HEAT EXCHANGER 1A 5R209F05017#1 B Active 3 24 B MOL O O FAI RPI App3 0PSP11-ZE-0006 OUTLET MOV / B-5 3R201TCC0644 CCW HEAT EXCHANGER 1B 5R209F05018#1 B Active 3 16 B MOL C O/C FAI ET-C 2Y 0PSP03-CC-0008 BYPASS MOV / A-6 ET-O 2Y 0PSP03-CC-0008 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0645 CCW HEAT EXCHANGER 1B 5R209F05018#1 B Active 3 24 B MOL O O FAI ET-C 2Y 0PSP03-CC-0008 OUTLET MOV / B-5 ET-O 2Y 0PSP03-CC-0008 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R201TCC0646 CCW HEAT EXCHANGER 1C 5R209F05019#1 B Active 3 16 B MOL C O/C FAI ET-C 2Y 0PSP03-CC-0009 BYPASS MOV / A-6 ET-O 2Y 0PSP03-CC-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 3R201TCC0646 CCW HEAT EXCHANGER 1C 5R209F05019#1 B Active 3 16 B MOL C O/C FAI OV-O App3 0PSP11-ZE-0006 BYPASS MOV / A-6 RPI App3 0PSP11-ZE-0006 3R201TCC0647 CCW HEAT EXCHANGER 1C 5R209F05019#1 B Active 3 24 B MOL O O FAI ET-C 2Y 0PSP03-CC-0009 OUTLET MOV / B-5 ET-O 2Y 0PSP03-CC-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R281TEW0006 ECW PUMP 1A DISCHARGE 5R289F05038S C Active 3 30 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE H1#1 / C-3 CV-O CM 0PSP03-EW-0017 3R281TEW0042 ECW PUMP 1B DISCHARGE 5R289F05038SH C Active 3 30 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE 2#1 / C CV-O CM 0PSP03-EW-0018

-3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 52 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req 3R281TEW0079 ECW PUMP 1C DISCHARGE 5R289F05038S C Active 3 30 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE H3#1 / C-3 CV-O CM 0PSP03-EW-0019 3R281TEW0121 ECW PUMP 1A DISCHARGE 5R289F05038SH B Active 3 30 B MOH O/C O FAI DIAG App3 0PSP11-ZE-0006 MOV 1#1 / C OV-C App3 0PSP11-ZE-0006

-2 OV-O App3 0PSP11-ZE-0006 3R281TEW0121 ECW PUMP 1A DISCHARGE 5R289F05038SH B Active 3 30 B MOH O/C O FAI RPI App3 0PSP11-ZE-0006 MOV 1#1 / C ET-C Q 0PSP03-EW-0017

-2 ET-O Q 0PSP03-EW-0017 3R281TEW0137 ECW PUMP 1B DISCHARGE 5R289F05038S B Active 3 30 B MOH O/C O FAI DIAG App3 0PSP11-ZE-0006 MOV H2#1 / C-2 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-EW-0018 ET-O Q 0PSP03-EW-0018 3R281TEW0151 ECW PUMP 1C DISCHARGE 5R289F05038SH B Active 3 30 B MOH O/C O FAI DIAG App3 0PSP11-ZE-0006 MOV 3#1 / C OV-C App3 0PSP11-ZE-0006

-2 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-EW-0019 ET-O Q 0PSP03-EW-0019 3S141TAF0011 AFW TRAIN D AUTO RECIRC 5S141F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 VLV / H-5 CV-O CM 0PSP03-AF-0007 3S141TAF0036 AFW TRAIN A AUTO RECIRC 5S141F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 VLV / F-6 3S141TAF0036 AFW TRAIN A AUTO RECIRC 5S141F00024#1 C Active 3 4 CK SA C O/C N/A CV-O CM 0PSP03-AF-0001 VLV / F-6 3S141TAF0058 AFW TRAIN B AUTO RECIRC VLV 5S141F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001

/ D-6 CV-O CM 0PSP03-AF-0011 3S141TAF0091 AFW TRAIN C AUTO RECIRC 5S141F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 VLV / B-6 CV-O CM 0PSP03-AF-0003 3S141XMS0514 MAIN STEAM TO TERRY 5S141F00024#2 B Active 2 4 GL MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 TURBINE THROTTLE MOV / F-6 OV-C App3 0PSP03-AF-0007 OV-O App3 0PSP03-AF-0007 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0007 ET-O Q 0PSP03-AF-0007 3S141ZAF7523 AF-MOV-7523 (AFW TRAIN 5S141F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 C DISCH MOV) / B-4 OV-C App3 0PSP03-AF-0003 OV-O App3 0PSP03-AF-0003 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 3S141ZAF7524 AF-MOV-7524 (AFW TRAIN B 5S141F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 DISCH MOV) / D-4 OV-C App3 0PSP03-AF-0002 3S141ZAF7524 AF-MOV-7524 (AFW TRAIN B 5S141F00024#1 B Active 3 4 GL MOH O O FAI OV-O App3 0PSP03-AF-0002 DISCH MOV) / D-4 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 3S141ZAF7525 AF-MOV-7525 (AFW TRAIN 5S141F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 A DISCH MOV) / F-4 OV-C App3 0PSP03-AF-0001 OV-O App3 0PSP03-AF-0001 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 3S141ZAF7526 AF-MOV-7526 (AFW TRAIN D 5S141F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 DISCH MOV) / H-3 OV-C App3 0PSP03-AF-0007 OV-O App3 0PSP03-AF-0007 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 A1AFFV7517 A AFW CROSSOVER VALVE (AF- 5S141F00024#1 B Active 3 4 GL AO C C C OV-C 2Y 0PSP03-AF-0010 FV / F-5

-7517)

A1AFFV7517 A AFW CROSSOVER VALVE (AF- 5S141F00024#1 B Active 3 4 GL AO C C C OV-O 2Y 0PSP03-AF-0010 FV / F-5 RPI 2Y 0PSP03-ZG-0001

-7517)

ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 A1CCFV4531 RHR HEAT EXCHANGER 1A 5R209F05017#1 B Active 3 16 B AO C O O OV-C 2Y 0PSP03-CC-0007 CCW RETURN FLOW / G-2 OV-O 2Y 0PSP03-CC-0007 CONTROL VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CC-0007 FS-O Q 0PSP03-CC-0007 ST-O Q 0PSP03-CC-0007

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 53 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req A1CHTV9477A TRAIN A ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT O O OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY / C-6 OV-O 2Y 0PSP03-CH-0007 AHU 11A OUTLET TEMPERATURE CONTROL RPI 2Y 0PSP03-ZG-0001 VALVE ET-O Q 0PSP03-CH-0007 FS-O Q 0PSP03-CH-0007 ST-O Q 0PSP03-CH-0007 A1CHTV9477B TRAIN A ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT C C OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-6 OV-O 2Y 0PSP03-CH-0007 11A BYPASS TEMPERATURE VALVE RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-CH-0007 FS-C Q 0PSP03-CH-0007 ST-C Q 0PSP03-CH-0007 A1CVFCV0205 CVCS CHARGING DISCHARGE 5R179F05007#1 B Active 2 4 GL AO NT O O OV-C 2Y 0PSP03-CV-0010 HEADER FLOW CONTROL / E-7 VALVE A1CVFCV0205 CVCS CHARGING DISCHARGE 5R179F05007#1 B Active 2 4 GL AO NT O O OV-O 2Y 0PSP03-CV-0010 HEADER FLOW CONTROL / E-7 RPI 2Y 0PSP03-ZG-0002 VALVE ET-C CS 0PSP03-CV-0011 CSJ-01 FS-O CS 0PSP03-CV-0011 CSJ-01 ST-C CS 0PSP03-CV-0011 CSJ-01 A1FWFV7141 STEAM GENERATOR 1A ORC 5S139F00063#1 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION / G-8 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A1FWFV7142 STEAM GENERATOR 1B ORC 5S139F00063#1 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION / G-6 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A1FWFV7143 STEAM GENERATOR 1C ORC 5S139F00063#1 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION / G-4 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A1FWFV7144 STEAM GENERATOR 1D ORC 5S139F00063#1 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION / G-2 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A1FWFV7147A STEAM GENERATOR 1B 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-5 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 A1FWFV7147A STEAM GENERATOR 1B 5S139F00063#1 B Active 2 3 GL AO C C C ET-C CS 0PSP03-FW-0002 CSJ-14 FEEDWATER INLET ORC / G-5 FS-C CS 0PSP03-FW-0002 CSJ-14 ISOLATION VALVE BYPASS ST-C CS 0PSP03-FW-0002 CSJ-14 A1FWFV7148A STEAM GENERATOR 1A 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-7 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-14 FS-C CS 0PSP03-FW-0002 CSJ-14 ST-C CS 0PSP03-FW-0002 CSJ-14 A1FWFV7189 STEAM GENERATOR 1A 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS / E-8 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-06 A1FWFV7189 STEAM GENERATOR 1A 5S139F00063#1 B Active 2 3 GL AO C C C FS-C CS 0PSP03-FW-0002 CSJ-06 PREHEATER ORC BYPASS / E-8 ST-C CS 0PSP03-FW-0002 CSJ-06 VALVE A1FWFV7190 STEAM GENERATOR 1B 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS / E-6 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-06 FS-C CS 0PSP03-FW-0002 CSJ-06 ST-C CS 0PSP03-FW-0002 CSJ-06 A1FWFV7191 STEAM GENERATOR 1C 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS / E-4 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-06 FS-C CS 0PSP03-FW-0002 CSJ-06 ST-C CS 0PSP03-FW-0002 CSJ-06 A1FWFV7192 STEAM GENERATOR 1D 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS / E-2 OV-O 2Y 0PSP03-FW-0002 VALVE RPI 2Y 0PSP03-ZG-0002

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 54 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req A1FWFV7192 STEAM GENERATOR 1D 5S139F00063#1 B Active 2 3 GL AO C C C ET-C CS 0PSP03-FW-0002 CSJ-06 PREHEATER ORC BYPASS / E-2 FS-C CS 0PSP03-FW-0002 CSJ-06 VALVE ST-C CS 0PSP03-FW-0002 CSJ-06 A1HCFV9776 REACTOR CONTAINMENT 5V149V00019#1 A Active 2 18 B AO O/C C C OV-C 2Y 0PSP11-HC-0003 BUILDING SUPPLEMENTARY / F-4 OV-O 2Y 0PSP03-HC-0003 PURGE SUPPLY ISOLATION VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-HC-0003 ET-C Q 0PSP03-HC-0003 FS-C Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 A1HCFV9777 REACTOR CONTAINMENT 5V149V00019#1 A Active 2 18 B AO O/C C C OV-C 2Y 0PSP11-HC-0004 BUILDING SUPPLEMENTARY / B-6 OV-O 2Y 0PSP03-HC-0004 PURGE EXHAUST ISOLATION VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-HC-0004 ET-C Q 0PSP03-HC-0003 FS-C Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 A1MSFSV7414 STEAM GENERATOR 1A MAIN 5S109F00016#1 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION / G-4 OV-O 2Y 0PSP03-MS-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-MS-0002 CSJ-08 A1MSFSV7414 STEAM GENERATOR 1A MAIN 5S109F00016#1 B Active 2 30 GT AO O C C FS-C CS 0PSP03-MS-0002 CSJ-08 STEAM ORC ISOLATION / G-4 ST-C CS 0PSP03-MS-0002 CSJ-08 VALVE A1MSFSV7424 STEAM GENERATOR 1B MAIN 5S109F00016#1 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION / F-4 OV-O 2Y 0PSP03-MS-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-MS-0002 CSJ-08 FS-C CS 0PSP03-MS-0002 CSJ-08 ST-C CS 0PSP03-MS-0002 CSJ-08 A1MSFSV7434 STEAM GENERATOR 1C MAIN 5S109F00016#1 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION / D-4 OV-O 2Y 0PSP03-MS-0002 VALVE RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-MS-0002 CSJ-08 FS-C CS 0PSP03-MS-0002 CSJ-08 ST-C CS 0PSP03-MS-0002 CSJ-08 A1MSFSV7444 STEAM GENERATOR 1D MAIN 5S109F00016#1 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION / C-4 OV-O 2Y 0PSP03-MS-0002 VALVE RPI 2Y 0PSP03-ZG-0002 A1MSFSV7444 STEAM GENERATOR 1D MAIN 5S109F00016#1 B Active 2 30 GT AO O C C ET-C CS 0PSP03-MS-0002 CSJ-08 STEAM ORC ISOLATION / C-4 FS-C CS 0PSP03-MS-0002 CSJ-08 VALVE ST-C CS 0PSP03-MS-0002 CSJ-08 A1MSFV7412 SG 1A MN STM ISOLATION 5S109F00016#1 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / G-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A1MSFV7422 SG 1B MN STM ISOLATION 5S109F00016#1 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / F-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A1MSFV7432 SG 1C MN STM ISOLATION 5S109F00016#1 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / D-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A1MSFV7442 SG 1D MN STM ISOLATION 5S109F00016#1 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / C-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A1MSPV7411 S/G 1A MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF / H-6 OV-O 2Y 0PSP03-MS-0001 VALVE (ORC)

RPI 2Y 0PSP03-ZG-0001 ET-C R 0PSP03-MS-0001 ISTC-3510 ET-O R 0PSP03-MS-0001 ISTC-3510 A1MSPV7411 S/G 1A MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C FS-C R 0PSP03-MS-0001 ISTC-3510 POWER OPERATED RELIEF / H-6 ST-C R 0PSP03-MS-0001 ISTC-3510 VALVE (ORC)

ST-O R 0PSP03-MS-0001 ISTC-3510

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 55 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req A1RCHCV0601 (IRC) RX VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 THROTTLE VALVE / E-2 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 A1RCHV3657A REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-4 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 A1RCHV3657A REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C FS-C R 0PSP03-RC-0011 ROJ-04 ISOLATION VALVE / E-4 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 A1RCHV3658A REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-3 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 A1RCPCV0655A PRESSURIZER POWER 5R149F05003#1 B Active 1 6 GL SO C O/C C OV-C 2Y 0PSP03-RC-0010 OPERATED RELIEF VLV / D-8 OV-O 2Y 0PSP03-RC-0010 RPI 2Y 0PSP03-RC-0010 ET-C Q 0PSP03-RC-0010 ET-O Q 0PSP03-RC-0010 FS-C Q 0PSP03-RC-0010 A1RCPCV0655A PRESSURIZER POWER 5R149F05003#1 B Active 1 6 GL SO C O/C C ST-C Q 0PSP03-RC-0010 OPERATED RELIEF VLV / D-8 ST-O Q 0PSP03-RC-0010 A1RHFCV0851 RHR HEAT EXCHANGER 1A 5R169F20000#1 B Active 2 8 B AO C C C OV-C 2Y 0PSP03-RH-0007 BYPASS VALVE / C-5 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-RH-0007 CSJ-11 FS-C CS 0PSP03-RH-0007 CSJ-11 A1RHHCV0864 RHR HEAT EXCHANGER 1A 5R169F20000#1 B Active 2 8 B AO O O O OV-C 2Y 0PSP03-RH-0007 OUTLET VALVE / B-4 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-O CS 0PSP03-RH-0007 CSJ-11 FS-O CS 0PSP03-RH-0007 CSJ-11 A1SBFV4150 STEAM GENERATOR 1D 5S209F20001#1 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC / C-5 OV-O 2Y 0PSP03-SB-0001 ISOLATION VALVE RPI 2Y 0PSP03-ZG-0001 A1SBFV4150 STEAM GENERATOR 1D 5S209F20001#1 B Active 2 4 GT AO O C C ET-C Q 0PSP03-SB-0001 BLOWDOWN ORC / C-5 FS-C Q 0PSP03-SB-0001 ISOLATION VALVE ST-C Q 0PSP03-SB-0001 A1SBFV4153 STEAM GENERATOR 1A 5S209F20001#1 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC / F-5 OV-O 2Y 0PSP03-SB-0001 ISOLATION VALVE RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-SB-0001 FS-C Q 0PSP03-SB-0001 ST-C Q 0PSP03-SB-0001 A1XCFV1025 PERSONNEL AIRLOCK 5C269F05060#1 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0010 REACTOR DOOR SEAL AIR / G-4 OV-O 2Y 0PSP11-XC-0010 SUPPLY FLOW CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 A1XCFV1025 PERSONNEL AIRLOCK 5C269F05060#1 A Active 2 0.5 GL SO O O/C C LTJ AppJ 0PSP11-XC-0010 REACTOR DOOR SEAL AIR / G-4 ET-C Q 0PSP03-XC-0003 SUPPLY FLOW CONTROL SOLENOID VALVE ET-O Q 0PSP03-XC-0003 FS-C Q 0PSP03-XC-0003 ST-C Q 0PSP03-XC-0003 ST-O Q 0PSP03-XC-0003 A1XCFV1026 PERSONNEL AIRLOCK OUTER 5C269F05060#1 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0011 DOOR SEAL AIR SUPPLY / F-4 OV-O 2Y 0PSP11-XC-0011 FLOW CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-XC-0011 ET-C Q 0PSP03-XC-0003 ET-O Q 0PSP03-XC-0003 A1XCFV1026 PERSONNEL AIRLOCK OUTER 5C269F05060#1 A Active 2 0.5 GL SO O O/C C FS-C Q 0PSP03-XC-0003 DOOR SEAL AIR SUPPLY / F-4 ST-C Q 0PSP03-XC-0003 FLOW CONTROL SOLENOID VALVE ST-O Q 0PSP03-XC-0003

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 56 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req A1XCFV1027 PERSONNEL AIRLOCK OUTER 5C269F05060#1 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0012 DOOR SEAL TEST AIR SUPPLY / C-4 OV-O 2Y 0PSP11-XC-0012 FLOW CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-XC-0012 ET-C Q 0PSP03-XC-0003 ET-O Q 0PSP03-XC-0003 FS-C Q 0PSP03-XC-0003 A1XCFV1027 PERSONNEL AIRLOCK OUTER 5C269F05060#1 A Active 2 0.5 GL SO O O/C C ST-C Q 0PSP03-XC-0003 DOOR SEAL TEST AIR SUPPLY / C-4 ST-O Q 0PSP03-XC-0003 FLOW CONTROL SOLENOID VALVE A1XCFV1028 PERSONNEL AIRLOCK 5C269F05060#1 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0013 REACTOR DOOR SEAL TEST / C-4 OV-O 2Y 0PSP11-XC-0013 AIR SUPPLY FLOW CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-XC-0013 ET-C Q 0PSP03-XC-0003 ET-O Q 0PSP03-XC-0003 FS-C Q 0PSP03-XC-0003 A1XCFV1028 PERSONNEL AIRLOCK 5C269F05060#1 A Active 2 0.5 GL SO O O/C C ST-C Q 0PSP03-XC-0003 REACTOR DOOR SEAL TEST / C-4 ST-O Q 0PSP03-XC-0003 AIR SUPPLY FLOW CONTROL SOLENOID VALVE B1AFFV7516 B AFW CROSSOVER VALVE (AF- 5S141F00024#1 B Active 3 4 GL AO C C C OV-C 2Y 0PSP03-AF-0010 FV-7516) / D-5 OV-O 2Y 0PSP03-AF-0010 RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 B1CCFV4548 RHR HEAT EXCHANGER 1B 5R209F05018#1 B Active 3 16 B AO C O O OV-C 2Y 0PSP03-CC-0008 CCW RETURN FLOW / G-2 OV-O 2Y 0PSP03-CC-0008 CONTROL VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CC-0008 FS-O Q 0PSP03-CC-0008 B1CCFV4548 RHR HEAT EXCHANGER 1B 5R209F05018#1 B Active 3 16 B AO C O O ST-O Q 0PSP03-CC-0008 CCW RETURN FLOW / G-2 CONTROL VALVE OPERATOR B1CHTV9487A TRAIN B ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT O O OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY / C-4 OV-O 2Y 0PSP03-CH-0007 AHU 11B OUTLET TEMPERATURE CONTROL RPI 2Y 0PSP03-ZG-0001 VALVE ET-O Q 0PSP03-CH-0007 FS-O Q 0PSP03-CH-0007 ST-O Q 0PSP03-CH-0007 B1CHTV9487B TRAIN B ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT C C OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY / C-4 OV-O 2Y 0PSP03-CH-0007 AHU 11B BYPASS TEMPERATURE CONTROL VALVE B1CHTV9487B TRAIN B ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT C C RPI 2Y 0PSP03-ZG-0001 WATER EAB MAIN SUPPLY / C-4 ET-C Q 0PSP03-CH-0007 AHU 11B BYPASS TEMPERATURE CONTROL FS-C Q 0PSP03-CH-0007 VALVE ST-C Q 0PSP03-CH-0007 B1FWFV7145A STEAM GENERATOR 1D 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-1 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-14 FS-C CS 0PSP03-FW-0002 CSJ-14 ST-C CS 0PSP03-FW-0002 CSJ-14 B1FWFV7146A STEAM GENERATOR 1C 5S139F00063#1 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-3 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-14 FS-C CS 0PSP03-FW-0002 CSJ-14 ST-C CS 0PSP03-FW-0002 CSJ-14 B1MSPV7421 S/G 1B MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF / F-6 OV-O 2Y 0PSP03-MS-0001 VALVE (ORC)

RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-MS-0001 ISTC-3510 ET-O R 0PSP03-MS-0001 ISTC-3510 FS-C R 0PSP03-MS-0001 ISTC-3510 ST-C R 0PSP03-MS-0001 ISTC-3510 ST-O R 0PSP03-MS-0001 ISTC-3510 B1RCHCV0602 REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 THROTTLE VALVE / D-2 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 57 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req B1RCHV3657B REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-4 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 B1RCHV3657B REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C ST-O R 0PSP03-RC-0011 ROJ-04 ISOLATION VALVE / E-4 B1RCHV3658B REACTOR VESSEL HEAD VENT 5R149F05001#1 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-3 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 B1RCPCV0656A PRESSURIZER POWER 5R149F05003#1 B Active 1 6 GL SO C O/C C OV-C 2Y 0PSP03-RC-0010 OPERATED RELIEF VLV / E-8 OV-O 2Y 0PSP03-RC-0010 RPI 2Y 0PSP03-RC-0010 ET-C Q 0PSP03-RC-0010 ET-O Q 0PSP03-RC-0010 FS-C Q 0PSP03-RC-0010 ST-C Q 0PSP03-RC-0010 ST-O Q 0PSP03-RC-0010 B1RHFCV0852 RHR HEAT EXCHANGER 1B 5R169F20000#1 B Active 2 8 B AO C C C OV-C 2Y 0PSP03-RH-0007 BYPASS VALVE / E-5 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-RH-0007 CSJ-11 FS-C CS 0PSP03-RH-0007 CSJ-11 B1RHHCV0865 RHR HEAT EXCHANGER 1B 5R169F20000#1 B Active 2 8 B AO O O O OV-C 2Y 0PSP03-RH-0007 OUTLET VALVE / D-4 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-O CS 0PSP03-RH-0007 CSJ-11 FS-O CS 0PSP03-RH-0007 CSJ-11 B1SBFV4152 STEAM GENERATOR 1B 5S209F20001#1 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC / F-2 OV-O 2Y 0PSP03-SB-0001 ISOLATION VALVE RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-SB-0001 FS-C Q 0PSP03-SB-0001 B1SBFV4152 STEAM GENERATOR 1B 5S209F20001#1 B Active 2 4 GT AO O C C ST-C Q 0PSP03-SB-0001 BLOWDOWN ORC / F-2 ISOLATION VALVE C1AFFV7515 C AFW CROSSOVER VALVE (AF- 5S141F00024#1 B Active 3 4 GL AO C C C OV-C 2Y 0PSP03-AF-0010 FV / B-5 OV-O 2Y 0PSP03-AF-0010

-7515)

RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 C1CCFV4565 RHR HEAT EXCHANGER 1C 5R209F05019#1 B Active 3 16 B AO C O O OV-C 2Y 0PSP03-CC-0009 CCW RETURN FLOW / G-2 OV-O 2Y 0PSP03-CC-0009 CONTROL VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CC-0009 FS-O Q 0PSP03-CC-0009 ST-O Q 0PSP03-CC-0009 C1CHTV9497A TRAIN C ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT O O OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY / C-1 OV-O 2Y 0PSP03-CH-0007 AHU 11C OUTLET TEMPERATURE CONTROL RPI 2Y 0PSP03-ZG-0001 VALVE ET-O Q 0PSP03-CH-0007 FS-O Q 0PSP03-CH-0007 ST-O Q 0PSP03-CH-0007 C1CHTV9497B TRAIN C ESSENTIAL CHILLED 3V119V10002#1 B Active 3 4 B AO NT C C OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY / C-1 OV-O 2Y 0PSP03-CH-0007 AHU 11C BYPASS TEMPERATURE CONTROL RPI 2Y 0PSP03-ZG-0001 VALVE ET-C Q 0PSP03-CH-0007 FS-C Q 0PSP03-CH-0007 ST-C Q 0PSP03-CH-0007 C1CVFV0011 CVCS LETDOWN ORIFICE 5R179F05005#1 B Active 2 4 GL AO O C C OV-C 2Y 0PSP03-CV-0011 HEADER ISOLATION VALVE / G-6 OV-O 2Y 0PSP03-CV-0011 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-CV-0011 CSJ-01 FS-C CS 0PSP03-CV-0011 CSJ-01 ST-C CS 0PSP03-CV-0011 CSJ-01 C1MSPV7431 S/G 1C MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF / E-6 OV-O 2Y 0PSP03-MS-0001 VALVE (ORC)

RPI 2Y 0PSP03-ZG-0001 ET-C R 0PSP03-MS-0001 ISTC-3510

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 58 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req C1MSPV7431 S/G 1C MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C ET-O R 0PSP03-MS-0001 ISTC-3510 POWER OPERATED RELIEF / E-6 FS-C R 0PSP03-MS-0001 ISTC-3510 VALVE (ORC)

ST-C R 0PSP03-MS-0001 ISTC-3510 ST-O R 0PSP03-MS-0001 ISTC-3510 C1RHFCV0853 RHR HEAT EXCHANGER 1C 5R169F20000#1 B Active 2 8 B AO C C C OV-C 2Y 0PSP03-RH-0007 BYPASS VALVE / H-5 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-RH-0007 CSJ-11 FS-C CS 0PSP03-RH-0007 CSJ-11 C1RHHCV0866 RHR HEAT EXCHANGER 1C 5R169F20000#1 B Active 2 8 B AO O O O OV-C 2Y 0PSP03-RH-0007 OUTLET VALVE / G-4 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-O CS 0PSP03-RH-0007 CSJ-11 FS-O CS 0PSP03-RH-0007 CSJ-11 C1SBFV4151 STEAM GENERATOR 1C 5S209F20001#1 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC / C-2 ISOLATION VALVE C1SBFV4151 STEAM GENERATOR 1C 5S209F20001#1 B Active 2 4 GT AO O C C OV-O 2Y 0PSP03-SB-0001 BLOWDOWN ORC / C-2 RPI 2Y 0PSP03-ZG-0001 ISOLATION VALVE ET-C Q 0PSP03-SB-0001 FS-C Q 0PSP03-SB-0001 ST-C Q 0PSP03-SB-0001 D1AFFV7518 D AFW CROSSOVER VALVE 5S141F00024#1 B Active 3 4 GL AO C C C OV-C 2Y 0PSP03-AF-0010 (AF- FV-7518) / G-4 OV-O 2Y 0PSP03-AF-0010 RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 D1MSPV7441 S/G 1D MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF / C-6 OV-O 2Y 0PSP03-MS-0001 VALVE (ORC)

RPI 2Y 0PSP03-ZG-0001 D1MSPV7441 S/G 1D MAIN STEAM OUTLET 5S109F00016#1 B Active 2 8 GL HO C O/C C ET-C R 0PSP03-MS-0001 ISTC-3510 POWER OPERATED RELIEF / C-6 ET-O R 0PSP03-MS-0001 ISTC-3510 VALVE (ORC)

FS-C R 0PSP03-MS-0001 ISTC-3510 ST-C R 0PSP03-MS-0001 ISTC-3510 ST-O R 0PSP03-MS-0001 ISTC-3510 N1CCFV4620 RCP 1A THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / B-6 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CCFV4621 RCP 1A THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / B-6 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CCFV4626 RCP 1B THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / B-3 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CCFV4627 RCP 1B THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / B-3 CONTROL VALVE OPERATOR N1CCFV4627 RCP 1B THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-O R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / B-3 CONTROL VALVE OPERATOR N1CCFV4632 RCP 1C THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / E-3 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CCFV4633 RCP 1C THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / E-3 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CCFV4638 RCP 1D THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / E-6 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CCFV4639 RCP 1D THERMAL BARRIER 5R209F05021#1 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 CCW RETURN FLOW / E-6 ET-O R 0PSP11-CC-0016 ROJ-02 CONTROL VALVE OPERATOR N1CVLV3119 CVCS AUXILIARY SPRAY 5R179F05005#1 B Active 1 2 GL AO C O/C C OV-C 2Y 0PSP03-CV-0011 LEVEL CONTROL VALVE / F-7 OV-O 2Y 0PSP03-CV-0011 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-CV-0011 CSJ-03 N1CVLV3119 CVCS AUXILIARY SPRAY 5R179F05005#1 B Active 1 2 GL AO C O/C C ET-O CS 0PSP03-CV-0011 CSJ-03 LEVEL CONTROL VALVE / F-7 FS-C CS 0PSP03-CV-0011 CSJ-03 ST-C CS 0PSP03-CV-0011 CSJ-03 ST-O CS 0PSP03-CV-0011 CSJ-03 N1MSPSV7410 S/G 1A MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N1MSPSV7410A S/G 1A MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N1MSPSV7410B S/G 1A MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N1MSPSV7410C S/G 1A MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N1MSPSV7410D S/G 1A MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N1MSPSV7420 S/G 1B MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N1MSPSV7420A S/G 1B MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 59 of 136 ATTACHMENT 6: Unit 1 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Passive Req N1MSPSV7420B S/G 1B MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N1MSPSV7420C S/G 1B MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N1MSPSV7420D S/G 1B MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N1MSPSV7430 S/G 1C MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N1MSPSV7430A S/G 1C MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N1MSPSV7430B S/G 1C MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N1MSPSV7430C S/G 1C MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N1MSPSV7430D S/G 1C MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N1MSPSV7440 S/G 1D MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N1MSPSV7440A S/G 1D MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N1MSPSV7440B S/G 1D MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N1MSPSV7440C S/G 1D MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N1MSPSV7440D S/G 1D MAIN STEAM OUTLET 5S109F00016#1 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N1RCPSV3450 PRESSURIZER SAFETY RELIEF 5R149F05003#1 C Active 1 6 PRV SA C O/C N/A RV 5Y 0PSP11-RC-0013 VALVE / F-7 N1RCPSV3451 PRESSURIZER SAFETY RELIEF 5R149F05003#1 C Active 1 6 PRV SA C O/C N/A RV 5Y 0PSP11-RC-0013 VALVE / F-6 N1RCPSV3452 PRESSURIZER SAFETY RELIEF 5R149F05003#1 C Active 1 6 PRV SA C O/C N/A RV 5Y 0PSP11-RC-0013 VALVE / F-4 N1RHPSV3851 RHR PUMP 1A DISCHARGE 5R169F20000#1 C Active 2 3 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / C-6 N1RHPSV3852 RHR PUMP 1B DISCHARGE 5R169F20000#1 C Active 2 3 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / E-6 N1RHPSV3853 RHR PUMP 1C DISCHARGE 5R169F20000#1 C Active 2 3 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / H-6 N1SDPSV5432 STARTING AIR RECEIVER #12 5Q159F22546#1 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-7 N1SDPSV5433 STARTING AIR RECEIVER #11 5Q159F22546#1 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-8 N1SDPSV5532 STARTING AIR RECEIVER #14 5Q159F22546#1 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-4 N1SDPSV5533 STARTING AIR RECEIVER #13 5Q159F22546#1 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-5 N1SDPSV5632 STARTING AIR RECEIVER #16 5Q159F22546#1 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-1 N1SDPSV5633 STARTING AIR RECEIVER #15 5Q159F22546#1 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 60 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 1N122XSI0007A HI HEAD SAFETY INJECTION 5N129F05013#2 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2A DISCHARGE TO LOOP / E-7 CV-C CM 0PSP03-SI-0023 2A COLD LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0007B HI HEAD SAFETY INJECTION 5N129F05014#2 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2B DISCHARGE TO LOOP / F-7 CV-C CM 0PSP03-SI-0023 2B COLD LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0007C HI HEAD SAFETY INJECTION 5N129F05015#2 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2C DISCHARGE TO LOOP / E-7 CV-C CM 0PSP03-SI-0023 2C COLD LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0009A HI HEAD SAFETY INJECTION 5N129F05013#2 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2A DISCHARGE TO LOOP / F-7 CV-C CM 0PSP03-SI-0023 2A HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0009B HI HEAD SAFETY INJECTION 5N129F05014#2 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2B DISCHARGE TO LOOP / G-7 CV-C CM 0PSP03-SI-0023 2B HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0009C HI HEAD SAFETY INJECTION 5N129F05015#2 A/C Active 1 6 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2C DISCHARGE TO LOOP / F-7 CV-C CM 0PSP03-SI-0023 2C HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0010A HI HEAD SAFETY INJECTION 5N129F05013#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2A DISCHARGE TO LOOP / F-8 CV-C CM 0PSP03-SI-0023 2A HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0010B HI HEAD SAFETY INJECTION 5N129F05014#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2B DISCHARGE TO LOOP / G-8 CV-C CM 0PSP03-SI-0023 2B HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0010C HI HEAD SAFETY INJECTION 5N129F05015#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMP 2C DISCHARGE TO LOOP / F-8 CV-C CM 0PSP03-SI-0023 2C HOT LEG CHECK VALVE CV-O CM 0PSP03-SI-0021 1N122XSI0038A SAFETY INJECTION TRAIN A TO 5N129F05016#2 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 LOOP 2A COLD LEG INJECTION / F-7 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1N122XSI0038B SAFETY INJECTION TRAIN B TO 5N129F05016#2 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 LOOP 2B COLD LEG INJECTION / D-7 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1N122XSI0038C SAFETY INJECTION TRAIN C 5N129F05016#2 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 PUMPS TO LOOP 2C COLD LEG / B-7 CV-C CM 0PSP03-SI-0023 INJECTION CHECK VALVE CV-O CM 0PSP03-SI-0029 1N122XSI0046A SAFETY INJECTION 5N129F05016#2 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 ACCUMULATOR 2A OUTLET / F-6 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1N122XSI0046B SAFETY INJECTION 5N129F05016#2 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 ACCUMULATOR 2B OUTLET / D-7 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1N122XSI0046C SAFETY INJECTION 5N129F05016#2 A/C Active 1 12 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 ACCUMULATOR 2C OUTLET / B-7 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0029 1R142XRC0001A PRESSURIZER PORV PCV-0655A 5R149F05003#2 B Active 1 3 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 ISOLATION VALVE / E-7 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP03-ZG-0001 1R142XRC0001A PRESSURIZER PORV PCV-0655A 5R149F05003#2 B Active 1 3 GT MOH O O/C FAI ET-C Q 0PSP03-RC-0009 ISOLATION VALVE / E-7 ET-O Q 0PSP03-RC-0009 R142XRC0001B PRESSURIZER PORV PCV-0656A 5R149F05003#2 B Active 1 3 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 ISOLATION VALVE / E-8 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RC-0009 ET-O Q 0PSP03-RC-0009 1R162XRH0020A LO HEAD SAFETY INJECTION 5R169F20000#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN A TO LOOP 2A HOT LEG / C-2 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0021 1R162XRH0020B LO HEAD SAFETY INJECTION 5R169F20000#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN B TO LOOP 2 HOT LEG / E-2 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0021 1R162XRH0020C LO HEAD SAFETY INJECTION 5R169F20000#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN C TO LOOP 2C HOT LEG / H-2 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-SI-0021 1R162XRH0032A LO HEAD SAFETY INJECTION 5R169F20000#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN A TO LOOP 2A COLD LEG / B-2 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-RH-0007 1R162XRH0032B LO HEAD SAFETY INJECTION 5R169F20000#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN B TO LOOP 2B COLD LEG / D-2 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-RH-0007

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 61 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 1R162XRH0032C LO HEAD SAFETY INJECTION 5R169F20000#2 A/C Active 1 8 CK SA C O/C N/A LT 2Y 0PSP03-SI-0023 TRAIN C TO LOOP 2C COLD LEG / G-2 CV-C CM 0PSP03-SI-0023 CHECK VALVE CV-O CM 0PSP03-RH-0007 1R162XRH0060A RHR PUMP 2A SUCTION FROM 5R169F20000#2 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010 LOOP 2A HOT LEG ISOLATION / B-8 DIAG App3 0PSP11-ZE-0006 MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R162XRH0060B RHR PUMP 2B SUCTION FROM 5R169F20000#2 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010 LOOP 2B HOT LEG ISOLATION / D-8 DIAG App3 0PSP11-ZE-0006 MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R162XRH0060C RHR PUMP 2C SUCTION FROM 5R169F20000#2 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010 LOOP 2C HOT LEG ISOLATION / G-8 DIAG App3 0PSP11-ZE-0006 VALVE OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R162XRH0061A RHR PUMP 2A SUCTION MOV 5R169F20000#2 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010

/ B-8 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R162XRH0061B RHR PUMP 2B SUCTION MOV 5R169F20000#2 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010

/ D-8 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R162XRH0061C RHR PUMP 2C SUCTION MOV 5R169F20000#2 A Active 1 12 GT MOH C O/C FAI LT 2Y 0PSP03-RH-0010

/ G-8 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-RH-0007 CSJ-10 ET-O CS 0PSP03-RH-0007 CSJ-10 1R172TCV0009 CVCS AUXILIARY SPRAY CHECK 5R179F05005#2 C Active 1 2 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 VALVE / F-8 CV-O CM 0PSP03-CV-0011 1R172TCV0036A RCP 2A SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0036B RCP 2B SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0036C RCP 2C SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0036D RCP 2D SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 FIRST CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0037A RCP 2A SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0037B RCP 2B SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0037C RCP 2C SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0037D RCP 2D SEAL #1 INJECTION 5R179F05005#2 C Active 1 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 SECOND CHECK VALVE / C-7 CV-O CM 0PSP03-CV-0012 1R172TCV0082 CVCS EXCESS LETDOWN HX 5R179F05005#2 B Active 1 2 D MOL O/C C FAI ET-C 2Y 0PSP03-CV-0012 INLET MOV / F-5 ET-O 2Y 0PSP03-CV-0012 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 1R172TCV0083 CVCS EXCESS LETDOWN LOOP 5R179F05005#2 B Active 1 2 D MOL O/C C FAI ET-C 2Y 0PSP03-CV-0012 2D ISOLATION MOV / F-5 ET-O 2Y 0PSP03-CV-0012 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 62 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 1R172XCV0001 CVCS NORMAL CHARGING TO 5R179F05005#2 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 RCS LOOP 2A COLD LEG FIRST / G-8 CV-O CM 0PSP03-CV-0011 CHECK VALVE 1R172XCV0002 CVCS NORMAL CHARGING TO 5R179F05005#2 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 RCS LOOP 2A COLD LEG / G-8 CV-O CM 0PSP03-CV-0011 SECOND CHECK VALVE 1R172XCV0004 CVCS ALTERNATE CHARGING TO 5R179F05005#2 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 RCS LOOP 2C COLD LEG FIRST / F-8 CV-O CM 0PSP03-CV-0011 CHECK VALVE 1R172XCV0005 CVCS ALTERNATE CHARGING TO 5R179F05005#2 C Active 1 4 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 RCS LOOP 2C COLD LEG / F-8 CV-O CM 0PSP03-CV-0011 SECOND CHECK VALVE 1R172XCV0465 CVCS LETDOWN ISOLATION 5R179F05005#2 B Active 1 4 GT MOH O C FAI DIAG App3 0PSP11-ZE-0006 MOV / G-8 1R172XCV0465 CVCS LETDOWN ISOLATION 5R179F05005#2 B Active 1 4 GT MOH O C FAI OV-C App3 0PSP11-ZE-0006 MOV / G-8 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-01 ET-O CS 0PSP03-CV-0011 CSJ-01 1R172XCV0468 CVCS LETDOWN ISOLATION 5R179F05005#2 B Active 1 4 GT MOH O C FAI DIAG App3 0PSP11-ZE-0006 MOV / G-7 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-01 ET-O CS 0PSP03-CV-0011 CSJ-01 2N122TSI0011A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A MINIFLOW FIRST / F-4 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N122TSI0011A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0020 PUMP 2A MINIFLOW FIRST / F-4 ET-O Q 0PSP03-SI-0020 ISOLATION MOV 2N122TSI0011B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B MINIFLOW FIRST / H-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N122TSI0011C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C MINIFLOW FIRST / G-4 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N122TSI0011C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 2C MINIFLOW FIRST / G-4 ET-O Q 0PSP03-SI-0025 ISOLATION MOV 2N122TSI0012A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A MINIFLOW SECOND / F-4 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N122TSI0012B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B MINIFLOW SECOND / H-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N122TSI0012B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 2B MINIFLOW SECOND / H-3 ET-O Q 0PSP03-SI-0024 ISOLATION MOV 2N122TSI0012C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C MINIFLOW SECOND / G-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N122TSI0013A LO HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A MINIFLOW SECOND / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N122TSI0013B LO HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B MINIFLOW SECOND / E-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N122TSI0013C LO HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C MINIFLOW SECOND / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 63 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2N122TSI0013C LO HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 2C MINIFLOW SECOND / D-3 ET-O Q 0PSP03-SI-0025 ISOLATION MOV 2N122TSI0014A LO HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A MINIFLOW FIRST / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N122TSI0014B LO HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B MINIFLOW FIRST / E-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 2N122TSI0014B LO HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 2 D MOH O O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 2B MINIFLOW FIRST / E-3 ET-O Q 0PSP03-SI-0024 ISOLATION MOV 2N122TSI0014C LO HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 2 D MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C MINIFLOW FIRST / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N122XSI0001A REFUELING WATER STORAGE 5N129F05013#2 B Active 2 16 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK SI PUMPS TRAIN A / G-3 OV-C App3 0PSP11-ZE-0006 SUCTION ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0001A REFUELING WATER STORAGE 5N129F05013#2 B Active 2 16 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0020 TANK SI PUMPS TRAIN A / G-3 ET-O Q 0PSP03-SI-0020 SUCTION ISOLATION MOV 2N122XSI0001B REFUELING WATER STORAGE 5N129F05014#2 B Active 2 16 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK SI PUMPS TRAIN B / H-2 OV-C App3 0PSP11-ZE-0006 SUCTION ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N122XSI0001C REFUELING WATER STORAGE 5N129F05015#2 B Active 2 16 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TANK SI PUMPS TRAIN C / H-2 OV-C App3 0PSP11-ZE-0006 SUCTION ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0001C REFUELING WATER STORAGE 5N129F05015#2 B Active 2 16 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0025 TANK SI PUMPS TRAIN C / H-2 ET-O Q 0PSP03-SI-0025 SUCTION ISOLATION MOV 2N122XSI0002A REFUELING WATER STORAGE 5N129F05013#2 C Active 2 16 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 TANK SI PUMPS TRAIN A / G-3 CV-O CM 0PSP03-SI-0030 SUCTION CHECK VALVE 2N122XSI0002B REFUELING WATER STORAGE 5N129F05014#2 C Active 2 16 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 TANK SI PUMPS TRAIN B / H-2 CV-O CM 0PSP03-SI-0030 SUCTION CHECK VALVE 2N122XSI0002C REFUELING WATER STORAGE 5N129F05015#2 C Active 2 16 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 TANK SI PUMPS TRAIN C / H-2 CV-O CM 0PSP03-SI-0030 SUCTION CHECK VALVE 2N122XSI0004A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A DISCHARGE MOV / F-5 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0004A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0020 PUMP 2A DISCHARGE MOV / F-5 ET-O Q 0PSP03-SI-0020 (ORC) 2N122XSI0004B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B DISCHARGE MOV / G-4 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N122XSI0004C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C DISCHARGE MOV / F-5 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0004C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 2C DISCHARGE MOV / F-5 ET-O Q 0PSP03-SI-0025 (ORC) 2N122XSI0005A HI HEAD SAFETY INJECTION 5N129F05013#2 C Active 2 6 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 2A DISCHARGE CHECK / F-6 CV-O CM 0PSP03-SI-0021 VALVE (IRC) 2N122XSI0005B HI HEAD SAFETY INJECTION 5N129F05014#2 C Active 2 6 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 2B DISCHARGE CHECK / G-4 CV-O CM 0PSP03-SI-0021 VALVE (IRC) 2N122XSI0005C HI HEAD SAFETY INJECTION 5N129F05015#2 C Active 2 6 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 2C DISCHARGE CHECK / F-5 CV-O CM 0PSP03-SI-0021 VALVE (IRC)

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 64 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2N122XSI0006A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A DISCHARGE TO LOOP / E-7 OV-C App3 0PSP11-ZE-0006 2A COLD LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 N122XSI0006A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0020 PUMP 2A DISCHARGE TO LOOP / E-7 ET-O Q 0PSP03-SI-0020 2A COLD LEG ISOLATION MOV 2N122XSI0006B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B DISCHARGE TO LOOP / F-7 OV-C App3 0PSP11-ZE-0006 2B COLD LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N122XSI0006C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C DISCHARGE TO LOOP / E-7 OV-C App3 0PSP11-ZE-0006 2C COLD LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0006C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 6 GT MOH O O/C FAI ET-C Q 0PSP03-SI-0025 PUMP 2C DISCHARGE TO LOOP / E-7 ET-O Q 0PSP03-SI-0025 2C COLD LEG ISOLATION MOV 2N122XSI0008A HI HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 6 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A DISCHARGE TO LOOP / F-7 OV-C App3 0PSP11-ZE-0006 2A HOT LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N122XSI0008B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 6 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B DISCHARGE TO LOOP / G-7 OV-C App3 0PSP11-ZE-0006 2B HOT LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0008B HI HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 6 GT MOH C O/C FAI ET-C Q 0PSP03-SI-0024 PUMP 2B DISCHARGE TO LOOP / G-7 ET-O Q 0PSP03-SI-0024 2B HOT LEG ISOLATION MOV 2N122XSI0008C HI HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 6 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C DISCHARGE TO LOOP / F-7 OV-C App3 0PSP11-ZE-0006 2C HOT LEG ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N122XSI0016A CONTAINMENT EMERGENCY 5N129F05013#2 B Active 2 16 GT MOH C O/C FAI LT 2Y 0PSP11-SI-0001 SUMP 2A TO SI TRAIN A PUMPS / B-4 DIAG App3 0PSP11-ZE-0006 SUCTION ORC ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 2N122XSI0016A CONTAINMENT EMERGENCY 5N129F05013#2 B Active 2 16 GT MOH C O/C FAI RPI App3 0PSP11-ZE-0001 SUMP 2A TO SI TRAIN A PUMPS / B-4 ET-C Q 0PSP03-SI-0020 SUCTION ORC ISOLATION MOV ET-O Q 0PSP03-SI-0020 2N122XSI0016B CONTAINMENT EMERGENCY 5N129F05014#2 B Active 2 16 GT MOH C O/C FAI LT 2Y 0PSP11-SI-0002 SUMP 2B TO SI TRAIN B PUMPS / B-4 DIAG App3 0PSP11-ZE-0006 SUCTION ORC ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024 2N122XSI0016C CONTAINMENT EMERGENCY 5N129F05015#2 B Active 2 16 GT MOH C O/C FAI LT 2Y 0PSP11-SI-0003 SUMP 2C TO SI TRAIN C PUMPS / B-4 DIAG App3 0PSP11-ZE-0006 SUCTION ORC ISOLATION MOV 2N122XSI0016C CONTAINMENT EMERGENCY 5N129F05015#2 B Active 2 16 GT MOH C O/C FAI OV-C App3 0PSP11-ZE-0006 SUMP 2C TO SI TRAIN C PUMPS / B-4 OV-O App3 0PSP11-ZE-0006 SUCTION ORC ISOLATION MOV RPI App3 0PSP11-ZE-0001 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N122XSI0018A LO HEAD SAFETY INJECTION 5N129F05013#2 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2A DISCHARGE MOV / C-4 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0020 ET-O Q 0PSP03-SI-0020 2N122XSI0018B LO HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2B DISCHARGE MOV / D-4 (ORC) 2N122XSI0018B LO HEAD SAFETY INJECTION 5N129F05014#2 B Active 2 8 GT MOH O O/C FAI OV-C App3 0PSP11-ZE-0006 PUMP 2B DISCHARGE MOV / D-4 OV-O App3 0PSP11-ZE-0006 (ORC)

RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0024 ET-O Q 0PSP03-SI-0024

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 65 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2N122XSI0018C LO HEAD SAFETY INJECTION 5N129F05015#2 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 PUMP 2C DISCHARGE MOV / D-4 OV-C App3 0PSP11-ZE-0006 (ORC)

OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-SI-0025 ET-O Q 0PSP03-SI-0025 2N122XSI0030A LO HEAD SAFETY INJECTION 5N129F05013#2 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 2A DISCHARGE CHECK / D-5 VALVE (IRC) 2N122XSI0030A LO HEAD SAFETY INJECTION 5N129F05013#2 C Active 2 8 CK SA C O/C N/A CV-O CM 0PSP03-SI-0021 PUMP 2A DISCHARGE CHECK / D-5 VALVE (IRC) 2N122XSI0030B LO HEAD SAFETY INJECTION 5N129F05014#2 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 2B DISCHARGE CHECK / D-4 CV-O CM 0PSP03-SI-0021 VALVE (IRC) 2N122XSI0030C LO HEAD SAFETY INJECTION 5N129F05015#2 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 PUMP 2C DISCHARGE CHECK / D-4 CV-O CM 0PSP03-SI-0021 VALVE (IRC) 2N122XSI0039A SAFETY INJECTION 5N129F05016#2 B Active 2 12 GT MOL O O/C FAI ET-C 2Y 0PSP03-SI-0028 ACCUMULATOR 2A OUTLET / F-5 ET-O 2Y 0PSP03-SI-0028 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2N122XSI0039B SAFETY INJECTION 5N129F05016#2 B Active 2 12 GT MOL O O/C FAI ET-C 2Y 0PSP03-SI-0028 ACCUMULATOR 2B OUTLET / D-5 ET-O 2Y 0PSP03-SI-0028 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 2N122XSI0039B SAFETY INJECTION 5N129F05016#2 B Active 2 12 GT MOL O O/C FAI OV-O App3 0PSP11-ZE-0006 ACCUMULATOR 2B OUTLET / D-5 RPI App3 0PSP11-ZE-0006 MOV 2N122XSI0039C SAFETY INJECTION 5N129F05016#2 B Active 2 12 GT MOL O O/C FAI ET-C 2Y 0PSP03-SI-0028 ACCUMULATOR 2C OUTLET / B-5 ET-O 2Y 0PSP03-SI-0028 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2Q272TFP0756 REACTOR CONTAINMENT 5Q279F05047#2 A Active 2 6 GT MOL- C C FAI ET-C 2Y 0PSP03-FP-0001 BUILDING FIRE PROTECTION / E-8 C ET-O 2Y 0PSP03-FP-0001 HEADER ISOLATION MOV REACTOR CONTAINMENT ST-C 2Y 0PSP03-FP-0001 BUILDING FIRE PROTECTION DIAG App3 0PSP11-ZE-0006 HEADER ISOLATION MOV OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP11-FP-0001 2Q272TFP0943 REACTOR CONTAINMENT 5Q279F05047#2 A/C Active 2 6 CK SA C C N/A LTJ AppJ 0PSP11-FP-0001 BUILDING FIRE PROTECTION / E-8 BD-O CM 0PSP11-FP-0001 HEADER CONTAINMENT ISOL CHECK VALVE CV-C CM 0PSP11-FP-0001 2R162XRH0019A LO HEAD SAFETY INJECTION 5R169F20000#2 B Active 2 8 GT MOH LC O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN A TO LOOP 2A HOT LEG / C-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R162XRH0019B LO HEAD SAFETY INJECTION 5R169F20000#2 B Active 2 8 GT MOH LC O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN B TO LOOP 2B HOT LEG / E-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R162XRH0019C LO HEAD SAFETY INJECTION 5R169F20000#2 B Active 2 8 GT MOH LC O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN C TO LOOP 2C HOT LEG / H-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R162XRH0031A LO HEAD SAFETY INJECTION 5R169F20000#2 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN A TO LOOP 2A COLD LEG / B-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R162XRH0031B LO HEAD SAFETY INJECTION 5R169F20000#2 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN B TO LOOP 2B COLD LEG / D-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 66 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2R162XRH0031C LO HEAD SAFETY INJECTION 5R169F20000#2 B Active 2 8 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 TRAIN C TO LOOP 2C COLD LEG / G-3 OV-C App3 0PSP11-ZE-0006 ISOLATION MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-RH-0009 ET-O Q 0PSP03-RH-0009 2R162XRH0063B RHR LOOP 2B RETURN TO RWST 5R169F20000#2 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0002 IRC ISOLATION VALVE / D-6 2R162XRH0063C RHR LOOP 2C RETURN TO RWST 5R169F20000#2 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0003 IRC ISOLATION VALVE / F-6 2R162XRH0064B RHR LOOP 2B RETURN TO RWST 5R169F20000#2 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0002 ORC ISOLATION VALVE / D-5 2R162XRH0064C RHR LOOP 2C RETURN TO RWST 5R169F20000#2 A Passive 2 8 GT M LC C N/A LTJ AppJ 0PSP11-RH-0003 ORC ISOLATION VALVE / F-5 2R162XRH0065A RHR PUMP 2A DISCHARGE 5R169F20000#2 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / B-6 CV-O CM 0PSP03-RH-0001 2R162XRH0065B RHR PUMP 2B DISCHARGE 5R169F20000#2 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / D-6 CV-O CM 0PSP03-RH-0002 2R162XRH0065C RHR PUMP 2C DISCHARGE 5R169F20000#2 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / G-6 CV-O CM 0PSP03-RH-0003 2R162XRH0066A RHR LOOP 2A DISCHARGE TO 5R169F20000#2 B Passive 2 4 GT MO C C FAI OV-C 2Y 0PSP11-ZE-0006 CVCS LETDOWN ISOLATION / A-4 OV-O 2Y 0PSP11-ZE-0006 MOV RPI 2Y 0PSP11-ZE-0006 2R162XRH0066B RHR LOOP 2B DISCHARGE TO 5R169F20000#2 B Passive 2 4 GT MO C C FAI OV-C 2Y 0PSP11-ZE-0006 CVCS LETDOWN ISOLATION / D-2 OV-O 2Y 0PSP11-ZE-0006 MOV RPI 2Y 0PSP11-ZE-0006 2R162XRH0067A RHR PUMP 2A MINIFLOW MOV 5R169F20000#2 B Active 2 4 GT MOL C O/C FAI ET-C 2Y 0PSP03-RH-0009

/ A-6 ET-O 2Y 0PSP03-RH-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R162XRH0067B RHR PUMP 2B MINIFLOW MOV 5R169F20000#2 B Active 2 4 GT MOL C O/C FAI ET-C 2Y 0PSP03-RH-0009

/ D-6 ET-O 2Y 0PSP03-RH-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 2R162XRH0067B RHR PUMP 2B MINIFLOW MOV 5R169F20000#2 B Active 2 4 GT MOL C O/C FAI RPI App3 0PSP11-ZE-0006

/ D-6 2R162XRH0067C RHR PUMP 2C MINIFLOW MOV 5R169F20000#2 B Active 2 4 GT MOL C O/C FAI ET-C 2Y 0PSP03-RH-0009

/ F-6 ET-O 2Y 0PSP03-RH-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R162XRH0068A RHR PUMP 2A MINIFLOW 5R169F20000#2 C Active 2 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / A-6 CV-O CM 0PSP03-RH-0001 2R162XRH0068B RHR PUMP 2B MINIFLOW 5R169F20000#2 C Active 2 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / D-6 CV-O CM 0PSP03-RH-0002 2R162XRH0068C RHR PUMP 2C MINIFLOW 5R169F20000#2 C Active 2 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE / F-6 CV-O CM 0PSP03-RH-0003 2R172TCV0033A RCP 2A SEAL #1 INJECTION ORC 5R179F05005#2 B Active 2 2 D MOL- O O/C FAI ET-C 2Y 0PSP03-CV-0011 CONTAINMENT ISOLATION MOV / C-8 C ET-O 2Y 0PSP03-CV-0011 ST-C 2Y 0PSP03-CV-0011 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R172TCV0033B RCP 2B SEAL #1 INJECTION ORC 5R179F05005#2 B Active 2 2 D MOL- O O/C FAI ET-C 2Y 0PSP03-CV-0011 CONTAINMENT ISOLATION MOV / C-8 C ET-O 2Y 0PSP03-CV-0011 ST-C 2Y 0PSP03-CV-0011 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R172TCV0033C RCP 2C SEAL #1 INJECTION ORC 5R179F05005#2 B Active 2 2 D MOL- O O/C FAI ET-C 2Y 0PSP03-CV-0011 CONTAINMENT ISOLATION MOV / C-8 C ET-O 2Y 0PSP03-CV-0011 ST-C 2Y 0PSP03-CV-0011 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R172TCV0033D RCP 2D SEAL #1 INJECTION ORC 5R179F05005#2 B Active 2 2 D MOL- O O/C FAI ET-C 2Y 0PSP03-CV-0011 CONTAINMENT ISOLATION MOV / C-8 C ET-O 2Y 0PSP03-CV-0011 ST-C 2Y 0PSP03-CV-0011

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 67 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2R172TCV0033D RCP 2D SEAL #1 INJECTION ORC 5R179F05005#2 B Active 2 2 D MOL- O O/C FAI DIAG App3 0PSP11-ZE-0006 CONTAINMENT ISOLATION MOV / C-8 C OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2R172TCV0034A RCP 2A SEAL #1 INJECTION IRC 5R179F05005#2 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CONTAINMENT ISOLATION / C-8 CV-O CM 0PSP03-CV-0012 CHECK VALVE 2R172TCV0034B RCP 2B SEAL #1 INJECTION IRC 5R179F05005#2 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CONTAINMENT ISOLATION / C-8 CV-O CM 0PSP03-CV-0012 CHECK VALVE 2R172TCV0034C RCP 2C SEAL #1 INJECTION IRC 5R179F05005#2 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CONTAINMENT ISOLATION / C-8 CV-O CM 0PSP03-CV-0012 CHECK VALVE 2R172TCV0034D RCP 2D SEAL #1 INJECTION IRC 5R179F05005#2 C Active 2 2 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CONTAINMENT ISOLATION / C-8 CV-O CM 0PSP03-CV-0012 CHECK VALVE 2R172TCV0243 POSITIVE DISPLACEMENT PUMP 5R179F05007#2 C Active 2 2 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 DISCHARGE CHECK VALVE / B-6 CV-C CM 0PSP11-ZE-0001 2R172XCV0003 CVCS NORMAL CHARGING TO 5R179F05005#2 B Active 2 4 GT MOH O/C O/C FAI DIAG App3 0PSP11-ZE-0006 RCS LOOP 2A COLD LEG MOV / G-7 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C R 0PSP03-CV-0011 ROJ-03 ET-O R 0PSP03-CV-0011 ROJ-03 2R172XCV0006 CVCS ALTERNATE CHARGING TO 5R179F05005#2 B Active 2 4 GT MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 RCS LOOP 2C COLD LEG MOV / F-7 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C R 0PSP03-CV-0011 ROJ-03 ET-O R 0PSP03-CV-0011 ROJ-03 2R172XCV0025 CVCS CHARGING ORC 5R179F05005#2 B Active 2 4 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 CONTAINMENT ISOLATION MOV / G-3 -C OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-01 2R172XCV0025 CVCS CHARGING ORC 5R179F05005#2 B Active 2 4 GT MOH O O/C FAI ET-O CS 0PSP03-CV-0011 CSJ-01 CONTAINMENT ISOLATION MOV / G-3 -C ST-C CS 0PSP03-CV-0011 CSJ-01 2R172XCV0026 CVCS CHARGING IRC 5R179F05005#2 C Active 2 4 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 CONTAINMENT ISOLATION / G-3 CV-O CM 0PSP03-CV-0012 CHECK VALVE 2R172XCV0112B CVCS VOLUME CONTROL TANK 5R179F05007#2 B Active 2 6 GT MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 OUTLET MOV / E-4 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-02 ET-O CS 0PSP03-CV-0011 CSJ-02 2R172XCV0113A CVCS VOLUME CONTROL TANK 5R179F05007#2 B Active 2 6 GT MOH O/C O/C FAI DIAG App3 0PSP11-ZE-0006 OUTLET MOV / E-4 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C CS 0PSP03-CV-0011 CSJ-02 ET-O CS 0PSP03-CV-0011 CSJ-02 2R172XCV0212 CVCS VOLUME CONTROL TANK 5R179F05007#2 C Active 2 6 CK SA O O N/A BD-C CM 0PSP11-ZE-0001 OUTLET CHECK VALVE / E-4 CV-O CM 0PSP11-ZE-0001 2R172XCV0670 CVCS CHARGING HEADER CHECK 5R179F05007#2 C Active 2 4 CK SA O O/C N/A CV-C CM 0PSP11-ZE-0001 VALVE / D-6 CV-O CM 0PSP03-CV-0012 2R202TCC0013 RHR TRAIN A CCW SUPPLY IRC 5R209F05017#2 A/C Active 2 16 CK SA C O/C N/A LTJ AppJ 0PSP11-CC-0007 CHECK VALVE / E-2 CV-C CM 0PSP11-CC-0007 CV-O CM 0PSP03-CC-0001 2R202TCC0123 RHR TRAIN B CCW SUPPLY IRC 5R209F05018#2 A/C Active 2 16 CK SA C O/C N/A LTJ AppJ 0PSP11-CC-0009 CHECK VALVE / E-2 CV-C CM 0PSP11-CC-0009 CV-O CM 0PSP03-CC-0002 2R202TCC0183 RHR TRAIN C CCW SUPPLY IRC 5R209F05019#2 A/C Active 2 16 CK SA C O/C N/A LTJ AppJ 0PSP11-CC-0011 CHECK VALVE / E-2 CV-C CM 0PSP11-CC-0011 CV-O CM 0PSP03-CC-0003 2S102TMS0021 S/G 2A MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / H-6 ET-O 2Y 0PSP03-MS-0001 2S102TMS0038 S/G 2B MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / F-6 ET-O 2Y 0PSP03-MS-0001 2S102TMS0055 S/G 2C MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / E-6 ET-O 2Y 0PSP03-MS-0001 2S102TMS0072 S/G 2D MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GT M O C N/A ET-C 2Y 0PSP03-MS-0001 PORV ISOLATION VALVE / C-6 ET-O 2Y 0PSP03-MS-0001 2S132TAF0308 SG 2D PREHEATER BYPASS LINE 5S139F00063#2 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VALVE / F-2 CV-C CM 0PSP11-ZE-0001 2S132TAF0309 SG 2A PREHEATER BYPASS LINE 5S139F00063#2 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VALVE / F-8 CV-C CM 0PSP11-ZE-0001 2S132TAF0310 SG 2B PREHTR BYPASS LINE 5S139F00063#2 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VLV / F-6 CV-C CM 0PSP11-ZE-0001

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 68 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2S132TAF0311 SG 2C PREHTR BYPASS LINE 5S139F00063#2 C Active 2 4 CK SA C C N/A BD-O CM 0PSP11-ZE-0001 CHECK VLV / F-4 CV-C CM 0PSP11-ZE-0001 2S132TFW0062 STEAM GENERATOR 2A 5S139F00063#2 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK VALVE / H-8 CV-C CM 0PSP11-ZE-0001 2S132TFW0066 STEAM GENERATOR 2B 5S139F00063#2 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK VALVE / H-6 CV-C CM 0PSP11-ZE-0001 2S132TFW0067 STEAM GENERATOR 2C 5S139F00063#2 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK VALVE / H-4 2S132TFW0067 STEAM GENERATOR 2C 5S139F00063#2 C Active 2 18 CK SA O C N/A CV-C CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK VALVE / H-4 2S132TFW0249 STEAM GENERATOR 2D 5S139F00063#2 C Active 2 18 CK SA O C N/A BD-O CM 0PSP11-ZE-0001 FEEDWATER INLET CHECK VALVE / H-2 CV-C CM 0PSP11-ZE-0001 2S142TAF0019 (OCIV) SG 2D AFW SUPPLY LINE 5S142F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 ISOLATION MOV / G-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0007 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 2S142TAF0048 (OCIV) SG 2A AFW SUPPLY LINE 5S142F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 ISOLATION MOV / F-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0011 2S142TAF0048 (OCIV) SG 2A AFW SUPPLY LINE 5S142F00024#1 B/C Active 2 4 SCK MOH C O/C FAI ET-C Q 0PSP03-AF-0010 ISOLATION MOV / F-2 ET-O Q 0PSP03-AF-0010 2S142TAF0065 (OCIV) SG 2B AFW SUPPLY LINE 5S142F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 ISOLATION MOV / D-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0011 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 2S142TAF0085 STEAM GENERATOR 2C ORC 5S142F00024#1 B/C Active 2 4 SCK MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 AFW ISOLATION MOV / B-2 OV-C App3 0PSP03-AF-0011 OV-O App3 0PSP03-AF-0011 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP11-ZE-0001 CV-O CM 0PSP03-AF-0011 ET-C Q 0PSP03-AF-0010 2S142TAF0085 STEAM GENERATOR 2C ORC 5S142F00024#1 B/C Active 2 4 SCK MOH C O/C FAI ET-O Q 0PSP03-AF-0010 AFW ISOLATION MOV / B-2 2S142TAF0119 (IMB) 2A AFW LINE CHECK VALVE 5S142F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 AT SG 2A / F-1 CV-O CM 0PSP03-AF-0011 2S142TAF0120 (IMB) 2B AFW LINE CHECK VALVE 5S142F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 AT SG 2B / D-1 CV-O CM 0PSP03-AF-0011 2S142TAF0121 (IMB) 2C AFW LINE CHECK VALVE 5S142F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 AT SG 2C / C-1 CV-O CM 0PSP03-AF-0011 2S142TAF0122 (IMB) 2D AFW LINE CHECK VALVE 5S142F00024#1 C Active 2 8 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001 AT SG 2D / H-1 CV-O CM 0PSP03-AF-0011 2S142TMS0143 TERRY TURBINE MAIN STEAM 5S142F00024#1 B/C Active 2 4 SCK MOH O O/C FAI DIAG App3 0PSP11-ZE-0006 SUPPLY ORC ISOLATION MOV / H-8 OV-C App3 0PSP03-AF-0007 OV-O App3 0PSP03-AF-0007 RPI App3 0PSP11-ZE-0006 CV-C CM 0PSP03-AF-0007 CV-O CM 0PSP03-AF-0007 ET-C Q 0PSP03-AF-0007 ET-O Q 0PSP03-AF-0007 2V142THC0003 REACTOR CONTAINMENT 5V149V00019#2 A Active 2 18 B MOH O/C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING SUPPLEMENTARY / F-3 -C OV-C App3 0PSP11-ZE-0006 PURGE SUPPLY (IRC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP03-HC-0003 ET-C Q 0PSP03-HC-0003 ET-O Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 2V142THC0005 REACTOR CONTAINMENT 5V149V00019#2 A Active 2 18 B MOH O/C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING SUPPLEMENTARY / B-7 -C PURGE EXHAUST (IRC)

ISOLATION DAMPER

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 69 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 2V142THC0005 REACTOR CONTAINMENT 5V149V00019#2 A Active 2 18 B MOH O/C C FAI OV-C App3 0PSP11-ZE-0006 BUILDING SUPPLEMENTARY / B-7 -C OV-O App3 0PSP11-ZE-0006 PURGE EXHAUST (IRC)

ISOLATION DAMPER RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP11-HC-0004 ET-C Q 0PSP03-HC-0003 ET-O Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 2V142ZHC0007 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-3 -C OV-C App3 0PSP11-ZE-0006 SUPPLY (ORC) ISOLATION DAMPER 2V142ZHC0007 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI OV-O App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-3 -C RPI App3 0PSP11-ZE-0006 SUPPLY (ORC) ISOLATION DAMPER LTJ AppJ 0PSP11-HC-0002 ET-C CS 0PSP03-HC-0004 CSJ-07 ET-O CS 0PSP03-HC-0004 CSJ-07 ST-C CS 0PSP03-HC-0004 CSJ-07 2V142ZHC0008 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-2 -C OV-C App3 0PSP11-ZE-0006 SUPPLY (IRC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 2V142ZHC0008 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI RPI App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / G-2 -C LTJ AppJ 0PSP11-HC-0002 SUPPLY (IRC) ISOLATION DAMPER ET-C CS 0PSP03-HC-0004 CSJ-07 ET-O CS 0PSP03-HC-0004 CSJ-07 ST-C CS 0PSP03-HC-0004 CSJ-07 2V142ZHC0009 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI DIAG App3 0PSP11-HC-0002 BUILDING NORMAL PURGE / B-7 -C OV-C App3 0PSP11-ZE-0006 EXHAUST (IRC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 2V142ZHC0009 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI LTJ AppJ 0PSP11-HC-0002 BUILDING NORMAL PURGE / B-7 -C ET-C CS 0PSP03-HC-0004 CSJ-07 EXHAUST (IRC) ISOLATION DAMPER ET-O CS 0PSP03-HC-0004 CSJ-07 ST-C CS 0PSP03-HC-0004 CSJ-07 2V142ZHC0010 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI DIAG App3 0PSP11-ZE-0006 BUILDING NORMAL PURGE / B-6 -C OV-C App3 0PSP11-ZE-0006 EXHAUST (ORC) ISOLATION DAMPER OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 LTJ AppJ 0PSP11-HC-0002 2V142ZHC0010 REACTOR CONTAINMENT 5V149V00018#2 A Active 2 48 B MOH C C FAI ET-C CS 0PSP03-HC-0004 CSJ-07 BUILDING NORMAL PURGE / B-6 -C ET-O CS 0PSP03-HC-0004 CSJ-07 EXHAUST (ORC) ISOLATION ST-C CS 0PSP03-HC-0004 CSJ-07 DAMPER 3Q152XSD0003A STARTING AIR RECEIVER #21 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0027 INLET CHECK VALVE / E-7 CV-C CM 0PSP03-DG-0027 3Q152XSD0003B STARTING AIR RECEIVER #23 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0028 INLET CHECK VALVE / E-5 CV-C CM 0PSP03-DG-0028 3Q152XSD0003C STARTING AIR RECEIVER #25 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0029 INLET CHECK VALVE / E-2 CV-C CM 0PSP03-DG-0029 3Q152XSD0004A STARTING AIR RECEIVER #22 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0027 INLET CHECK VALVE / E-7 CV-C CM 0PSP03-DG-0027 3Q152XSD0004B STARTING AIR RECEIVER #24 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0028 INLET CHECK VALVE / E-4 CV-C CM 0PSP03-DG-0028 3Q152XSD0004C STARTING AIR RECEIVER #26 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A BD-O CM 0PSP03-DG-0029 INLET CHECK VALVE / E-1 3Q152XSD0004C STARTING AIR RECEIVER #26 5Q159F22546#2 C Active 3 1 CK SA O/C C N/A CV-C CM 0PSP03-DG-0029 INLET CHECK VALVE / E-1 3R202TCC0051 CCW PUMP 2A COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 SUCTION HEADER CHECK VALVE / C-7 CV-O CM 0PSP03-CC-0001 3R202TCC0052 CCW PUMP 2A COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0007 SUCTION HEADER ISOLATION / C-7 ET-O 2Y 0PSP03-CC-0007 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0131 CCW PUMP 2B COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 SUCTION HEADER CHECK VALVE / C-7 CV-O CM 0PSP03-CC-0002 3R202TCC0132 CCW PUMP 2B COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0008 SUCTION HEADER ISOLATION / C-7 ET-O 2Y 0PSP03-CC-0008 MOV 3R202TCC0132 CCW PUMP 2B COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI DIAG App3 0PSP11-ZE-0006 SUCTION HEADER ISOLATION / C-7 OV-C App3 0PSP11-ZE-0006 MOV OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0191 CCW PUMP 2C COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 SUCTION HEADER CHECK VALVE / B-7 CV-O CM 0PSP03-CC-0003

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 70 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 3R202TCC0192 CCW PUMP 2C COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0009 SUCTION HEADER ISOLATION / B-7 ET-O 2Y 0PSP03-CC-0009 MOV DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0311 CCW TRAIN C COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 HEADER SUPPLY CHECK VALVE / E-7 3R202TCC0311 CCW TRAIN C COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-O CM 0PSP03-CC-0003 HEADER SUPPLY CHECK VALVE / E-7 3R202TCC0312 CCW TRAIN C COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0009 HEADER SUPPLY MOV / E-7 ET-O 2Y 0PSP03-CC-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0313 CCW TRAIN B COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 HEADER SUPPLY CHECK VALVE / E-7 CV-O CM 0PSP03-CC-0002 3R202TCC0314 CCW TRAIN B COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0008 HEADER SUPPLY MOV / E-7 ET-O 2Y 0PSP03-CC-0008 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0315 CCW TRAIN A COMMON 5R209F05020#2 C Active 3 24 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 HEADER SUPPLY CHECK VALVE / F-7 CV-O CM 0PSP03-CC-0001 3R202TCC0316 CCW TRAIN A COMMON 5R209F05020#2 B Active 3 24 B MOL O/C O/C FAI ET-C 2Y 0PSP03-CC-0007 HEADER SUPPLY MOV / F-7 ET-O 2Y 0PSP03-CC-0007 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0642 CCW HEAT EXCHANGER 2A 5R209F05017#2 B Active 3 16 B MOL C O/C FAI ET-C 2Y 0PSP03-CC-0007 BYPASS MOV / A-6 ET-O 2Y 0PSP03-CC-0007 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0643 CCW HEAT EXCHANGER 2A 5R209F05017#2 B Active 3 24 B MOL O O FAI ET-C 2Y 0PSP03-CC-0007 OUTLET MOV / B-5 ET-O 2Y 0PSP03-CC-0007 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 3R202TCC0643 CCW HEAT EXCHANGER 2A 5R209F05017#2 B Active 3 24 B MOL O O FAI RPI App3 0PSP11-ZE-0006 OUTLET MOV / B-5 3R202TCC0644 CCW HEAT EXCHANGER 2B 5R209F05018#2 B Active 3 16 B MOL C O/C FAI ET-C 2Y 0PSP03-CC-0008 BYPASS MOV / A-6 ET-O 2Y 0PSP03-CC-0008 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0645 CCW HEAT EXCHANGER 2B 5R209F05018#2 B Active 3 24 B MOL O O FAI ET-C 2Y 0PSP03-CC-0008 OUTLET MOV / B-5 ET-O 2Y 0PSP03-CC-0008 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R202TCC0646 CCW HEAT EXCHANGER 2C 5R209F05019#2 B Active 3 16 B MOL C O/C FAI ET-C 2Y 0PSP03-CC-0009 BYPASS MOV / A-6 ET-O 2Y 0PSP03-CC-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 3R202TCC0646 CCW HEAT EXCHANGER 2C 5R209F05019#2 B Active 3 16 B MOL C O/C FAI OV-O App3 0PSP11-ZE-0006 BYPASS MOV / A-6 RPI App3 0PSP11-ZE-0006 3R202TCC0647 CCW HEAT EXCHANGER 2C 5R209F05019#2 B Active 3 24 B MOL O O FAI ET-C 2Y 0PSP03-CC-0009 OUTLET MOV / B-5 ET-O 2Y 0PSP03-CC-0009 DIAG App3 0PSP11-ZE-0006 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 3R282TEW0006 ECW PUMP 2A DISCHARGE 5R289F05038SH C Active 3 30 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE 1#2 / C-3 CV-O CM 0PSP03-EW-0017 3R282TEW0042 ECW PUMP 2B DISCHARGE 5R289F05038SH C Active 3 30 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE 2#2 / C-3 CV-O CM 0PSP03-EW-0018 3R282TEW0079 ECW PUMP 2C DISCHARGE 5R289F05038SH C Active 3 30 CK SA O/C O/C N/A CV-C CM 0PSP11-ZE-0001 CHECK VALVE 3#2 / C-3 CV-O CM 0PSP03-EW-0019

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 71 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive 3R282TEW0121 ECW PUMP 2A DISCHARGE MOV 5R289F05038SH B Active 3 30 B MOH O/C O FAI DIAG App3 0PSP11-ZE-0006 1#2 / C-2 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 3R282TEW0121 ECW PUMP 2A DISCHARGE MOV 5R289F05038SH B Active 3 30 B MOH O/C O FAI RPI App3 0PSP11-ZE-0006 1#2 / C-2 ET-C Q 0PSP03-EW-0017 ET-O Q 0PSP03-EW-0017 3R282TEW0137 ECW PUMP 2B DISCHARGE MOV 5R289F05038SH B Active 3 30 B MOH O/C O FAI DIAG App3 0PSP11-ZE-0006 2#2 / C-2 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-EW-0018 ET-O Q 0PSP03-EW-0018 3R282TEW0151 ECW PUMP 2C DISCHARGE MOV 5R289F05038SH B Active 3 30 B MOH O/C O FAI DIAG App3 0PSP11-ZE-0006 3#2 / C-2 OV-C App3 0PSP11-ZE-0006 OV-O App3 0PSP11-ZE-0006 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-EW-0019 ET-O Q 0PSP03-EW-0019 3S142TAF0011 AFW TRAIN D AUTO RECIRC VLV 5S142F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001

/ H-5 CV-O CM 0PSP03-AF-0007 3S142TAF0036 AFW TRAIN A AUTO RECIRC VLV 5S142F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001

/ F-6 3S142TAF0036 AFW TRAIN A AUTO RECIRC VLV 5S142F00024#1 C Active 3 4 CK SA C O/C N/A CV-O CM 0PSP03-AF-0001

/ F-6 3S142TAF0058 AFW TRAIN B AUTO RECIRC VLV 5S142F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001

/ D-6 CV-O CM 0PSP03-AF-0011 3S142TAF0091 AFW TRAIN C AUTO RECIRC VLV 5S142F00024#1 C Active 3 4 CK SA C O/C N/A CV-C CM 0PSP11-ZE-0001

/ B-6 CV-O CM 0PSP03-AF-0003 3S142XMS0514 MAIN STEAM TO TERRY TURBINE 5S142F00024#2 B Active 2 4 GL MOH C O/C FAI DIAG App3 0PSP11-ZE-0006 THROTTLE MOV / F-6 OV-C App3 0PSP03-AF-0007 OV-O App3 0PSP03-AF-0007 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0007 ET-O Q 0PSP03-AF-0007 3S142ZAF7523 AF-MOV-7523 (AFW TRAIN C 5S142F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 DISCH MOV) / B-4 OV-C App3 0PSP03-AF-0003 OV-O App3 0PSP03-AF-0003 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 3S142ZAF7524 AF-MOV-7524 (AFW TRAIN B 5S142F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 DISCH MOV) / D-4 OV-C App3 0PSP03-AF-0002 3S142ZAF7524 AF-MOV-7524 (AFW TRAIN B 5S142F00024#1 B Active 3 4 GL MOH O O FAI OV-O App3 0PSP03-AF-0002 DISCH MOV) / D-4 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 3S142ZAF7525 AF-MOV-7525 (AFW TRAIN A 5S142F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 DISCH MOV) / D-4 OV-C App3 0PSP03-AF-0001 OV-O App3 0PSP03-AF-0001 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 3S142ZAF7526 AF-MOV-7526 (AFW TRAIN D 5S142F00024#1 B Active 3 4 GL MOH O O FAI DIAG App3 0PSP11-ZE-0006 DISCH MOV) / D-4 OV-C App3 0PSP03-AF-0007 OV-O App3 0PSP03-AF-0007 RPI App3 0PSP11-ZE-0006 ET-C Q 0PSP03-AF-0010 ET-O Q 0PSP03-AF-0010 A2AFFV7517 A AFW CROSSOVER VALVE (AF- 5S142F00024#1 B Active 3 4 GL AO O C C OV-C 2Y 0PSP03-AF-0010 FV / F-5

-7517)

A2AFFV7517 A AFW CROSSOVER VALVE (AF- 5S142F00024#1 B Active 3 4 GL AO O C C OV-O 2Y 0PSP03-AF-0010 FV / F-5 RPI 2Y 0PSP03-ZG-0001

-7517)

ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 A2CCFV4531 RHR HEAT EXCHANGER 2A CCW 5R209F05017#2 B Active 3 16 B AO C O O OV-C 2Y 0PSP03-CC-0007 RETURN FLOW CONTROL VALVE / G-2 OV-O 2Y 0PSP03-CC-0007 OPERATOR RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CC-0007 FS-O Q 0PSP03-CC-0007 ST-O Q 0PSP03-CC-0007 A2CHTV9477A TRAIN A ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT O O OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-6 OV-O 2Y 0PSP03-CH-0007 21A OUTLET TEMPERATURE CONTROL VALVE

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 72 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive A2CHTV9477A TRAIN A ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT O O RPI 2Y 0PSP03-ZG-0001 WATER EAB MAIN SUPPLY AHU / C-6 ET-O Q 0PSP03-CH-0007 21A OUTLET TEMPERATURE CONTROL VALVE FS-O Q 0PSP03-CH-0007 ST-O Q 0PSP03-CH-0007 A2CHTV9477B TRAIN A ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT C C OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-6 OV-O 2Y 0PSP03-CH-0007 21A BYPASS TEMPERATURE VALVE RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-CH-0007 FS-C Q 0PSP03-CH-0007 ST-C Q 0PSP03-CH-0007 A2CVFCV0205 CVCS CHARGING DISCHARGE 5R179F05007#2 B Active 2 4 GL AO NT O O OV-C 2Y 0PSP03-CV-0010 HEADER FLOW CONTROL VALVE / E-7 A2CVFCV0205 CVCS CHARGING DISCHARGE 5R179F05007#2 B Active 2 4 GL AO NT O O OV-O 2Y 0PSP03-CV-0010 HEADER FLOW CONTROL VALVE / E-7 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-CV-0011 CSJ-01 FS-O CS 0PSP03-CV-0011 CSJ-01 ST-C CS 0PSP03-CV-0011 CSJ-01 A2FWFV7141 STEAM GENERATOR 2A ORC 5S139F00063#2 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION VALVE / G-8 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A2FWFV7142 STEAM GENERATOR 2B ORC 5S139F00063#2 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION VALVE / G-6 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A2FWFV7143 STEAM GENERATOR 2C ORC 5S139F00063#2 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION VALVE / G-4 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A2FWFV7144 STEAM GENERATOR 2D ORC 5S139F00063#2 B Active 2 18 GT HO O C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER ISOLATION VALVE / G-2 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-05 FS-C CS 0PSP03-FW-0002 CSJ-05 ST-C CS 0PSP03-FW-0002 CSJ-05 A2FWFV7147A STEAM GENERATOR 2B 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-5 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 A2FWFV7147A STEAM GENERATOR 2B 5S139F00063#2 B Active 2 3 GL AO C C C ET-C CS 0PSP03-FW-0002 CSJ-14 FEEDWATER INLET ORC / G-5 FS-C CS 0PSP03-FW-0002 CSJ-14 ISOLATION VALVE BYPASS ST-C CS 0PSP03-FW-0002 CSJ-14 A2FWFV7148A STEAM GENERATOR 2A 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-7 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-14 FS-C CS 0PSP03-FW-0002 CSJ-14 ST-C CS 0PSP03-FW-0002 CSJ-14 A2FWFV7189 STEAM GENERATOR 2A 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS VALVE / E-8 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-06 A2FWFV7189 STEAM GENERATOR 2A 5S139F00063#2 B Active 2 3 GL AO C C C FS-C CS 0PSP03-FW-0002 CSJ-06 PREHEATER ORC BYPASS VALVE / E-8 ST-C CS 0PSP03-FW-0002 CSJ-06 A2FWFV7190 STEAM GENERATOR 2B 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS VALVE / E-6 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-06 FS-C CS 0PSP03-FW-0002 CSJ-06 ST-C CS 0PSP03-FW-0002 CSJ-06 A2FWFV7191 STEAM GENERATOR 2C 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS VALVE / E-4 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-06 FS-C CS 0PSP03-FW-0002 CSJ-06 ST-C CS 0PSP03-FW-0002 CSJ-06 A2FWFV7192 STEAM GENERATOR 2D 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 PREHEATER ORC BYPASS VALVE / E-2 OV-O 2Y 0PSP03-FW-0002 RPI 2Y 0PSP03-ZG-0002 A2FWFV7192 STEAM GENERATOR 2D 5S139F00063#2 B Active 2 3 GL AO C C C ET-C CS 0PSP03-FW-0002 CSJ-06 PREHEATER ORC BYPASS VALVE / E-2 FS-C CS 0PSP03-FW-0002 CSJ-06 ST-C CS 0PSP03-FW-0002 CSJ-06

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 73 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive A2HCFV9776 REACTOR CONTAINMENT 5V149V00019#2 A Active 2 18 B AO O/C C C OV-C 2Y 0PSP11-HC-0003 BUILDING SUPPLEMENTARY / F-4 OV-O 2Y 0PSP03-HC-0003 PURGE SUPPLY ISOLATION VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-HC-0003 ET-C Q 0PSP03-HC-0003 FS-C Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 A2HCFV9777 REACTOR CONTAINMENT 5V149V00019#2 A Active 2 18 B AO O/C C C OV-C 2Y 0PSP11-HC-0004 BUILDING SUPPLEMENTARY / B-6 OV-O 2Y 0PSP03-HC-0004 PURGE EXHAUST ISOLATION VALVE OPERATOR RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-HC-0004 ET-C Q 0PSP03-HC-0003 FS-C Q 0PSP03-HC-0003 ST-C Q 0PSP03-HC-0003 A2MSFSV7414 STEAM GENERATOR 2A MAIN 5S109F00016#2 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION VALVE / G-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-MS-0002 CSJ-08 A2MSFSV7414 STEAM GENERATOR 2A MAIN 5S109F00016#2 B Active 2 30 GT AO O C C FS-C CS 0PSP03-MS-0002 CSJ-08 STEAM ORC ISOLATION VALVE / G-4 ST-C CS 0PSP03-MS-0002 CSJ-08 A2MSFSV7424 STEAM GENERATOR 2B MAIN 5S109F00016#2 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION VALVE / F-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-MS-0002 CSJ-08 FS-C CS 0PSP03-MS-0002 CSJ-08 ST-C CS 0PSP03-MS-0002 CSJ-08 A2MSFSV7434 STEAM GENERATOR 2C MAIN 5S109F00016#2 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION VALVE / D-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-MS-0002 CSJ-08 FS-C CS 0PSP03-MS-0002 CSJ-08 ST-C CS 0PSP03-MS-0002 CSJ-08 A2MSFSV7444 STEAM GENERATOR 2D MAIN 5S109F00016#2 B Active 2 30 GT AO O C C OV-C 2Y 0PSP03-MS-0002 STEAM ORC ISOLATION VALVE / C-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0002 A2MSFSV7444 STEAM GENERATOR 2D MAIN 5S109F00016#2 B Active 2 30 GT AO O C C ET-C CS 0PSP03-MS-0002 CSJ-08 STEAM ORC ISOLATION VALVE / C-4 FS-C CS 0PSP03-MS-0002 CSJ-08 ST-C CS 0PSP03-MS-0002 CSJ-08 A2MSFV7412 SG 2A MN STM ISOLATION 5S109F00016#2 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / G-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A2MSFV7422 SG 2B MN STM ISOLATION 5S109F00016#2 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / F-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A2MSFV7432 SG 2C MN STM ISOLATION 5S109F00016#2 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / D-4 OV-O 2Y 0PSP03-MS-0002 A2MSFV7432 SG 2C MN STM ISOLATION 5S109F00016#2 B Active 2 4 GL AO C C C RPI 2Y 0PSP03-ZG-0001 BYPASS VALVE / D-4 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A2MSFV7442 SG 2D MN STM ISOLATION 5S109F00016#2 B Active 2 4 GL AO C C C OV-C 2Y 0PSP03-MS-0002 BYPASS VALVE / C-4 OV-O 2Y 0PSP03-MS-0002 RPI 2Y 0PSP03-ZG-0001 ET-C CS 0PSP03-MS-0002 CSJ-09 FS-C CS 0PSP03-MS-0002 CSJ-09 ST-C CS 0PSP03-MS-0002 CSJ-09 A2MSPV7411 S/G 2A MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF VALVE / H-6 OV-O 2Y 0PSP03-MS-0001 (ORC)

RPI 2Y 0PSP03-ZG-0001 ET-C R 0PSP03-MS-0001 PORV /

ISTC-3510 ET-O R 0PSP03-MS-0001 PORV /

ISTC-3510 A2MSPV7411 S/G 2A MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C FS-C R 0PSP03-MS-0001 PORV /

POWER OPERATED RELIEF VALVE / H-6 ISTC-3510 (ORC) ST-C R 0PSP03-MS-0001 PORV /

ISTC-3510 ST-O R 0PSP03-MS-0001 PORV /

ISTC-3510

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 74 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive A2RCHCV0601 REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 THROTTLE VALVE / E-2 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 A2RCHV3657A REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-4 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 A2RCHV3657A REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C FS-C R 0PSP03-RC-0011 ROJ-04 ISOLATION VALVE / E-4 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 A2RCHV3658A REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-3 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 A2RCPCV0655A PRESSURIZER POWER OPERATED 5R149F05003#2 B Active 1 6 GL SO C O/C C OV-C 2Y 0PSP03-RC-0010 RELIEF VLV / D-8 OV-O 2Y 0PSP03-RC-0010 RPI 2Y 0PSP03-RC-0010 ET-C Q 0PSP03-RC-0010 ET-O Q 0PSP03-RC-0010 FS-C Q 0PSP03-RC-0010 A2RCPCV0655A PRESSURIZER POWER OPERATED 5R149F05003#2 B Active 1 6 GL SO C O/C C ST-C Q 0PSP03-RC-0010 RELIEF VLV / D-8 ST-O Q 0PSP03-RC-0010 A2RHFCV0851 RHR HEAT EXCHANGER 2A 5R169F20000#2 B Active 2 8 B AO C C C OV-C 2Y 0PSP03-RH-0007 BYPASS VALVE / C-5 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-RH-0007 CSJ-11 FS-C CS 0PSP03-RH-0007 CSJ-11 A2RHHCV0864 RHR HEAT EXCHANGER 2A 5R169F20000#2 B Active 2 8 B AO O O O OV-C 2Y 0PSP03-RH-0007 OUTLET VALVE / B-4 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-O CS 0PSP03-RH-0007 CSJ-11 FS-O CS 0PSP03-RH-0007 CSJ-11 A2SBFV4150 STEAM GENERATOR 2D 5S209F20001#2 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / C-5 OV-O 2Y 0PSP03-SB-0001 VALVE RPI 2Y 0PSP03-ZG-0001 A2SBFV4150 STEAM GENERATOR 2D 5S209F20001#2 B Active 2 4 GT AO O C C ET-C Q 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / C-5 FS-C Q 0PSP03-SB-0001 VALVE ST-C Q 0PSP03-SB-0001 A2SBFV4153 STEAM GENERATOR 2A 5S209F20001#2 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / F-5 OV-O 2Y 0PSP03-SB-0001 VALVE RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-SB-0001 FS-C Q 0PSP03-SB-0001 ST-C Q 0PSP03-SB-0001 A2XCFV1025 PERSONNEL AIRLOCK REACTOR 5C269F05060#2 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0010 DOOR SEAL AIR SUPPLY FLOW / G-4 OV-O 2Y 0PSP11-XC-0010 CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 A2XCFV1025 PERSONNEL AIRLOCK REACTOR 5C269F05060#2 A Active 2 0.5 GL SO O O/C C LTJ AppJ 0PSP11-XC-0010 DOOR SEAL AIR SUPPLY FLOW / G-4 ET-C Q 0PSP03-XC-0003 CONTROL SOLENOID VALVE ET-O Q 0PSP03-XC-0003 FS-C Q 0PSP03-XC-0003 ST-C Q 0PSP03-XC-0003 ST-O Q 0PSP03-XC-0003 A2XCFV1026 PERSONNEL AIRLOCK OUTER 5C269F05060#2 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0011 DOOR SEAL AIR SUPPLY FLOW / F-4 OV-O 2Y 0PSP11-XC-0011 CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-XC-0011 ET-C Q 0PSP03-XC-0003 ET-O Q 0PSP03-XC-0003 A2XCFV1026 PERSONNEL AIRLOCK OUTER 5C269F05060#2 A Active 2 0.5 GL SO O O/C C FS-C Q 0PSP03-XC-0003 DOOR SEAL AIR SUPPLY FLOW / F-4 ST-C Q 0PSP03-XC-0003 CONTROL SOLENOID VALVE ST-O Q 0PSP03-XC-0003

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 75 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive A2XCFV1027 PERSONNEL AIRLOCK OUTER 5C269F05060#2 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0012 DOOR SEAL TEST AIR SUPPLY / C-4 OV-O 2Y 0PSP11-XC-0012 FLOW CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-XC-0012 ET-C Q 0PSP03-XC-0003 ET-O Q 0PSP03-XC-0003 FS-C Q 0PSP03-XC-0003 A2XCFV1027 PERSONNEL AIRLOCK OUTER 5C269F05060#2 A Active 2 0.5 GL SO O O/C C ST-C Q 0PSP03-XC-0003 DOOR SEAL TEST AIR SUPPLY / C-4 ST-O Q 0PSP03-XC-0003 FLOW CONTROL SOLENOID VALVE A2XCFV1028 PERSONNEL AIRLOCK REACTOR 5C269F05060#2 A Active 2 0.5 GL SO O O/C C OV-C 2Y 0PSP11-XC-0013 DOOR SEAL TEST AIR SUPPLY / C-4 OV-O 2Y 0PSP11-XC-0013 FLOW CONTROL SOLENOID VALVE RPI 2Y 0PSP03-ZG-0001 LTJ AppJ 0PSP11-XC-0013 ET-C Q 0PSP03-XC-0003 ET-O Q 0PSP03-XC-0003 FS-C Q 0PSP03-XC-0003 A2XCFV1028 PERSONNEL AIRLOCK REACTOR 5C269F05060#2 A Active 2 0.5 GL SO O O/C C ST-C Q 0PSP03-XC-0003 DOOR SEAL TEST AIR SUPPLY / C-4 ST-O Q 0PSP03-XC-0003 FLOW CONTROL SOLENOID VALVE B2AFFV7516 B AFW CROSSOVER VALVE (AF- 5S142F00024#1 B Active 3 4 GL AO O C C OV-C 2Y 0PSP03-AF-0010 FV-7516) / D-5 OV-O 2Y 0PSP03-AF-0010 RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 B2CCFV4548 RHR HEAT EXCHANGER 2B CCW 5R209F05018#2 B Active 3 16 B AO C O O OV-C 2Y 0PSP03-CC-0008 RETURN FLOW CONTROL VALVE / G-2 OV-O 2Y 0PSP03-CC-0008 OPERATOR RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CC-0008 FS-O Q 0PSP03-CC-0008 B2CCFV4548 RHR HEAT EXCHANGER 2B CCW 5R209F05018#2 B Active 3 16 B AO C O O ST-O Q 0PSP03-CC-0008 RETURN FLOW CONTROL VALVE / G-2 OPERATOR B2CHTV9487A TRAIN B ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT O O OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-4 OV-O 2Y 0PSP03-CH-0007 21B OUTLET TEMPERATURE CONTROL VALVE RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CH-0007 FS-O Q 0PSP03-CH-0007 ST-O Q 0PSP03-CH-0007 B2CHTV9487B TRAIN B ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT C C OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-4 OV-O 2Y 0PSP03-CH-0007 21B BYPASS TEMPERATURE CONTROL VALVE B2CHTV9487B TRAIN B ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT C C RPI 2Y 0PSP03-ZG-0001 WATER EAB MAIN SUPPLY AHU / C-4 ET-C Q 0PSP03-CH-0007 21B BYPASS TEMPERATURE CONTROL VALVE FS-C Q 0PSP03-CH-0007 ST-C Q 0PSP03-CH-0007 B2FWFV7145A STEAM GENERATOR 2D 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-1 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-14 FS-C CS 0PSP03-FW-0002 CSJ-14 ST-C CS 0PSP03-FW-0002 CSJ-14 B2FWFV7146A STEAM GENERATOR 2C 5S139F00063#2 B Active 2 3 GL AO C C C OV-C 2Y 0PSP03-FW-0002 FEEDWATER INLET ORC / G-3 OV-O 2Y 0PSP03-FW-0002 ISOLATION VALVE BYPASS RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-FW-0002 CSJ-14 FS-C CS 0PSP03-FW-0002 CSJ-14 ST-C CS 0PSP03-FW-0002 CSJ-14 B2MSPV7421 S/G 2B MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF VALVE / F-6 OV-O 2Y 0PSP03-MS-0001 (ORC)

RPI 2Y 0PSP03-ZG-0001 ET-C R 0PSP03-MS-0001 ISTC-3510 ET-O R 0PSP03-MS-0001 ISTC-3510 FS-C R 0PSP03-MS-0001 ISTC-3510 ST-C R 0PSP03-MS-0001 ISTC-3510 B2MSPV7421 S/G 2B MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C ST-O R 0PSP03-MS-0001 ISTC-3510 POWER OPERATED RELIEF VALVE / F-6 (ORC)

B2RCHCV0602 REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 THROTTLE VALVE / D-2 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 76 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive B2RCHV3657B REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-4 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 B2RCHV3657B REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C ST-O R 0PSP03-RC-0011 ROJ-04 ISOLATION VALVE / E-4 B2RCHV3658B REACTOR VESSEL HEAD VENT 5R149F05001#2 B Active 2 1 GL SO C O/C C OV-C 2Y 0PSP03-RC-0011 ISOLATION VALVE / E-3 OV-O 2Y 0PSP03-RC-0011 RPI 2Y 0PSP03-ZG-0002 ET-C R 0PSP03-RC-0011 ROJ-04 ET-O R 0PSP03-RC-0011 ROJ-04 FS-C R 0PSP03-RC-0011 ROJ-04 ST-C R 0PSP03-RC-0011 ROJ-04 ST-O R 0PSP03-RC-0011 ROJ-04 B2RCPCV0656A PRESSURIZER POWER OPERATED 5R149F05003#2 B Active 1 6 GL SO C O/C C OV-C 2Y 0PSP03-RC-0010 RELIEF VLV / E-8 OV-O 2Y 0PSP03-RC-0010 RPI 2Y 0PSP03-RC-0010 ET-C Q 0PSP03-RC-0010 ET-O Q 0PSP03-RC-0010 FS-C Q 0PSP03-RC-0010 ST-C Q 0PSP03-RC-0010 ST-O Q 0PSP03-RC-0010 B2RHFCV0852 RHR HEAT EXCHANGER 2B 5R169F20000#2 B Active 2 8 B AO C C C OV-C 2Y 0PSP03-RH-0007 BYPASS VALVE / E-5 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-RH-0007 CSJ-11 FS-C CS 0PSP03-RH-0007 CSJ-11 B2RHHCV0865 RHR HEAT EXCHANGER 2B 5R169F20000#2 B Active 2 8 B AO O O O OV-C 2Y 0PSP03-RH-0007 OUTLET VALVE / D-4 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-O CS 0PSP03-RH-0007 CSJ-11 FS-O CS 0PSP03-RH-0007 CSJ-11 B2SBFV4152 STEAM GENERATOR 2B 5S209F20001#2 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / F-2 OV-O 2Y 0PSP03-SB-0001 VALVE RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-SB-0001 FS-C Q 0PSP03-SB-0001 B2SBFV4152 STEAM GENERATOR 2B 5S209F20001#2 B Active 2 4 GT AO O C C ST-C Q 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / F-2 VALVE C2AFFV7515 C AFW CROSSOVER VALVE (AF- 5S142F00024#1 B Active 3 4 GL AO O C C OV-C 2Y 0PSP03-AF-0010 FV-7515) / B-5 OV-O 2Y 0PSP03-AF-0010 RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 C2CCFV4565 RHR HEAT EXCHANGER 2C CCW 5R209F05019#2 B Active 3 16 B AO C O O OV-C 2Y 0PSP03-CC-0009 RETURN FLOW CONTROL VALVE / G-2 OV-O 2Y 0PSP03-CC-0009 OPERATOR RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CC-0009 FS-O Q 0PSP03-CC-0009 ST-O Q 0PSP03-CC-0009 C2CHTV9497A TRAIN C ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT O O OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-1 OV-O 2Y 0PSP03-CH-0007 21C OUTLET TEMPERATURE CONTROL VALVE RPI 2Y 0PSP03-ZG-0001 ET-O Q 0PSP03-CH-0007 FS-O Q 0PSP03-CH-0007 ST-O Q 0PSP03-CH-0007 C2CHTV9497B TRAIN C ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT C C OV-C 2Y 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-1 OV-O 2Y 0PSP03-CH-0007 21C BYPASS TEMPERATURE CONTROL VALVE RPI 2Y 0PSP03-ZG-0001 C2CHTV9497B TRAIN C ESSENTIAL CHILLED 3V119V10002#2 B Active 3 4 B AO NT C C ET-C Q 0PSP03-CH-0007 WATER EAB MAIN SUPPLY AHU / C-1 FS-C Q 0PSP03-CH-0007 21C BYPASS TEMPERATURE CONTROL VALVE ST-C Q 0PSP03-CH-0007 C2CVFV0011 CVCS LETDOWN ORIFICE 5R179F05005#2 B Active 2 4 GL AO O C C OV-C 2Y 0PSP03-CV-0011 HEADER ISOLATION VALVE / G-6 OV-O 2Y 0PSP03-CV-0011 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-CV-0011 CSJ-01 FS-C CS 0PSP03-CV-0011 CSJ-01 ST-C CS 0PSP03-CV-0011 CSJ-01 C2MSPV7431 S/G 2C MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF VALVE / E-6 OV-O 2Y 0PSP03-MS-0001 (ORC)

RPI 2Y 0PSP03-ZG-0001 ET-C R 0PSP03-MS-0001 ISTC-3510

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 77 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive C2MSPV7431 S/G 2C MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C ET-O R 0PSP03-MS-0001 ISTC-3510 POWER OPERATED RELIEF VALVE / E-6 FS-C R 0PSP03-MS-0001 ISTC-3510 (ORC)

ST-C R 0PSP03-MS-0001 ISTC-3510 ST-O R 0PSP03-MS-0001 ISTC-3510 C2RHFCV0853 RHR HEAT EXCHANGER 2C 5R169F20000#2 B Active 2 8 B AO C C C OV-C 2Y 0PSP03-RH-0007 BYPASS VALVE / H-5 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-RH-0007 CSJ-11 FS-C CS 0PSP03-RH-0007 CSJ-11 C2RHHCV0866 RHR HEAT EXCHANGER 2C 5R169F20000#2 B Active 2 8 B AO O O O OV-C 2Y 0PSP03-RH-0007 OUTLET VALVE / G-4 OV-O 2Y 0PSP03-RH-0007 RPI 2Y 0PSP03-ZG-0002 ET-O CS 0PSP03-RH-0007 CSJ-11 FS-O CS 0PSP03-RH-0007 CSJ-11 C2SBFV4151 STEAM GENERATOR 2C 5S209F20001#2 B Active 2 4 GT AO O C C OV-C 2Y 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / C-2 VALVE C2SBFV4151 STEAM GENERATOR 2C 5S209F20001#2 B Active 2 4 GT AO O C C OV-O 2Y 0PSP03-SB-0001 BLOWDOWN ORC ISOLATION / C-2 RPI 2Y 0PSP03-ZG-0001 VALVE ET-C Q 0PSP03-SB-0001 FS-C Q 0PSP03-SB-0001 ST-C Q 0PSP03-SB-0001 D2AFFV7518 D AFW CROSSOVER VALVE (AF- 5S142F00024#1 B Active 3 4 GL AO O C C OV-C 2Y 0PSP03-AF-0010 FV-7518) / G-4 OV-O 2Y 0PSP03-AF-0010 RPI 2Y 0PSP03-ZG-0001 ET-C Q 0PSP03-AF-0010 FS-C Q 0PSP03-AF-0010 ST-C Q 0PSP03-AF-0010 D2MSPV7441 S/G 2D MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C OV-C 2Y 0PSP03-MS-0001 POWER OPERATED RELIEF VALVE / C-6 OV-O 2Y 0PSP03-MS-0001 (ORC)

RPI 2Y 0PSP03-ZG-0001 D2MSPV7441 S/G 2D MAIN STEAM OUTLET 5S109F00016#2 B Active 2 8 GL HO C O/C C ET-C R 0PSP03-MS-0001 ISTC-3510 POWER OPERATED RELIEF VALVE / C-6 ET-O R 0PSP03-MS-0001 ISTC-3510 (ORC)

FS-C R 0PSP03-MS-0001 ISTC-3510 ST-C R 0PSP03-MS-0001 ISTC-3510 ST-O R 0PSP03-MS-0001 ISTC-3510 N2CCFV4620 RCP 2A THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / B-6 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CCFV4621 RCP 2A THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / B-6 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CCFV4626 RCP 2B THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / B-3 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CCFV4627 RCP 2B THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / B-3 OPERATOR N2CCFV4627 RCP 2B THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-O R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / B-3 OPERATOR N2CCFV4632 RCP 2C THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / E-3 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CCFV4633 RCP 2C THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / E-3 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CCFV4638 RCP 2D THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / E-6 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CCFV4639 RCP 2D THERMAL BARRIER CCW 5R209F05021#2 C Active 3 3 GL SA O O/C N/A ET-C R 0PSP11-CC-0016 ROJ-02 RETURN FLOW CONTROL VALVE / E-6 ET-O R 0PSP11-CC-0016 ROJ-02 OPERATOR N2CVLV3119 CVCS AUXILIARY SPRAY LEVEL 5R179F05005#2 B Active 2 2 GL AO C O/C C OV-C 2Y 0PSP03-CV-0011 CONTROL VALVE / F-7 OV-O 2Y 0PSP03-CV-0011 RPI 2Y 0PSP03-ZG-0002 ET-C CS 0PSP03-CV-0011 CSJ-03 N2CVLV3119 CVCS AUXILIARY SPRAY LEVEL 5R179F05005#2 B Active 2 2 GL AO C O/C C ET-O CS 0PSP03-CV-0011 CSJ-03 CONTROL VALVE / F-7 FS-C CS 0PSP03-CV-0011 CSJ-03 ST-C CS 0PSP03-CV-0011 CSJ-03 ST-O CS 0PSP03-CV-0011 CSJ-03 N2MSPSV7410 STM GENERATOR 2A MAIN 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs STEAM SAFETY VALVE / H-6 N2MSPSV7410A STM GENERATOR 2A MAIN 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs STEAM SAFETY VALVE / H-6 N2MSPSV7410B S/G 2A MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N2MSPSV7410C S/G 2A MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N2MSPSV7410D S/G 2A MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / H-6 N2MSPSV7420 S/G 2B MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N2MSPSV7420A S/G 2B MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 78 of 136 ATTACHMENT 7: Unit 2 ISTC Tested Valve List Valve ID Comp Description Drawing / Cat Active / Class Size Type Act Position Test Freq Procedure Notes Coordinate Normal Safe Fail Req Passive N2MSPSV7420B S/G 2B MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N2MSPSV7420C S/G 2B MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N2MSPSV7420D S/G 2B MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / F-6 N2MSPSV7430 S/G 2C MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N2MSPSV7430A S/G 2C MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N2MSPSV7430B S/G 2C MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N2MSPSV7430C S/G 2C MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N2MSPSV7430D S/G 2C MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / E-6 N2MSPSV7440 S/G 2D MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N2MSPSV7440A S/G 2D MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N2MSPSV7440B S/G 2D MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N2MSPSV7440C S/G 2D MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N2MSPSV7440D S/G 2D MAIN STEAM OUTLET 5S109F00016#2 C Active 2 6 PRV SA C O/C N/A RV 5Y 0PSP11-MS-0001 MSSVs ORC SAFETY RELIEF VALVE / C-6 N2RCPSV3450 PRESSURIZER SAFETY RELIEF 5R149F05003#2 C Active 1 6 PRV SA C O/C N/A RV 5Y 0PSP11-RC-0013 VALVE / F-7 N2RCPSV3451 PRESSURIZER SAFETY RELIEF 5R149F05003#2 C Active 1 6 PRV SA C O/C N/A RV 5Y 0PSP11-RC-0013 VALVE / F-6 N2RCPSV3452 PRESSURIZER SAFETY RELIEF 5R149F05003#2 C Active 1 6 PRV SA C O/C N/A RV 5Y 0PSP11-RC-0013 VALVE / F-4 N2RHPSV3851 RHR PUMP 2A DISCHARGE 5R169F20000#2 C Active 2 3 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / C-6 N2RHPSV3852 RHR PUMP 2B DISCHARGE 5R169F20000#2 C Active 2 3 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / E-6 N2RHPSV3853 RHR PUMP 2C DISCHARGE 5R169F20000#2 C Active 2 3 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / H-6 N2SDPSV5432 STARTING AIR RECEIVER #22 5Q159F22546#2 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-7 N2SDPSV5433 STARTING AIR RECEIVER #21 5Q159F22546#2 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-8 N2SDPSV5532 STARTING AIR RECEIVER #24 5Q159F22546#2 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-4 N2SDPSV5533 STARTING AIR RECEIVER #23 5Q159F22546#2 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-5 N2SDPSV5632 STARTING AIR RECEIVER #26 5Q159F22546#2 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-1 N2SDPSV5633 STARTING AIR RECEIVER #25 5Q159F22546#2 C Active 3 0.75 PRV SA C O/C N/A RV 10Y 0PSP11-ZE-0003 RELIEF VALVE / F-2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 79 of 136 ATTACHMENT 8: Unit 1 ML012040470 Exempt Valve List Valve ID Category Component Description Drawing / Coordinate Class 2N101XCS0001A CONTAINMENT SPRAY PUMP 1A DISCHARGE MOV (ORC) 5N109F05037#1 / G-6 ML012040470 2 2N101XCS0001B CONTAINMENT SPRAY PUMP 1B DISCHARGE MOV (ORC) 5N109F05037#1 / E-6 ML012040470 2 2N101XCS0001C CONTAINMENT SPRAY PUMP 1C DISCHARGE MOV (ORC) 5N109F05037#1 / C-6 ML012040470 2 2N101XCS0002 CONTAINMENT SPRAY PUMP 1A DISCHARGE CHECK VALVE (IRC) 5N109F05037#1 / G-7 ML012040470 2 2N101XCS0004 CONTAINMENT SPRAY HEADER IRC CHECK VALVE 5N109F05037#1 / E-8 ML012040470 2 2N101XCS0005 CONTAINMENT SPRAY HEADER IRC CHECK VALVE 5N109F05037#1 / D-8 ML012040470 2 2N101XCS0006 CONTAINMENT SPRAY PUMP 1C DISCHARGE CHECK VALVE (IRC) 5N109F05037#1 / C-7 ML012040470 2 2N121TSI0058 SAFETY INJECTION ACCUMULATORS IRC NITROGEN SUPPLY CHECK VALVE 5N129F05016#1 / G-2 ML012040470 2 2Q061TED0064 CONTAINMENT NORMAL SUMP SUMP PUMPS 1A & B DISCHARGE (IRC) ISOLATION MOV 5Q069F05030#1 / G-7 ML012040470 2 2Q101TSA0504 RCB SERVICE AIR HEADER ORC ISOLATION VALVE 5Q109F05041#1 / C-4 ML012040470 2 2Q101TSA0505 RCB SERVICE AIR HEADER IRC CHECK VALVE 5Q109F05041#1 / D-4 ML012040470 2 2Q111TIA0541 RCB INSTRUMENT AIR HEADER IRC CHECK VALVE 5Q119F05040#1 / D-4 ML012040470 2 2Q121TBA0004 (OCIV) BREATHING AIR TO RCB 5Q129F05044#1 / G-4 ML012040470 2 2Q121TBA0006 (IRC) BREATHING AIR ICIV CHECK VALVE 5Q129F05044#1 / H-4 ML012040470 2 2R141XRC0046 REACTOR MAKEUP WATER TO PRT IRC INLET CHECK VALVE 5R149F05004#1 / E-4 ML012040470 2 2R161TRH0166 RCP SEAL STANDPIPE 1A SUPPLY CHECK VALVE 5R169F20000#1 / C-5 ML012040470 2 2R161TRH0167 RCP SEAL STANDPIPE 1B SUPPLY CHECK VALVE 5R169F20000#1 / F-5 ML012040470 2 2R161TRH0168 RCP SEAL STANDPIPE 1B SUPPLY CHECK VALVE 5R169F20000#1 / F-5 ML012040470 2 2R161TRH0169 RCP SEAL STANDPIPE 1C SUPPLY CHECK VALVE 5R169F20000#1 / H-5 ML012040470 2 2R161TRH0170 RCP SEAL STANDPIPE 1C SUPPLY CHECK VALVE 5R169F20000#1 / H-5 ML012040470 2 2R161TRH0171 RHR HEAT EXCHANGER 1A STANDPIPE FILL VALVE 5R169F20000#1 / C-5 ML012040470 2 2R161TRH0172 RHR HEAT EXCHANGER 1B STANDPIPE FILL VALVE 5R169F20000#1 / F-5 ML012040470 2 2R161TRH0173 RHR HEAT EXCHANGER 1C STANDPIPE FILL VALVE 5R169F20000#1 / H-5 ML012040470 2 2R161TRH0174 RCP SEAL STANDPIPE 1A SUPPLY CHECK VALVE 5R169F20000#1 / C-5 ML012040470 2 2R171TCV0022 CVCS LETDOWN IRC CONTAINMENT ISOLATION BYPASS CHECK VALVE 5R179F05005#1 / H-3 ML012040470 2 2R171TCV0077 RCP SEAL WATER RETURN IRC CONTAINMENT ISOLATION MOV 5R179F05005#1 / E-3 ML012040470 2 2R171TCV0078 RCP SEAL WATER IRC BYPASS CHECK VALVE 5R179F05005#1 / F-3 ML012040470 2 2R171TCV0079 RCP SEAL WATER RETURN ORC CONTAINMENT ISOLATION MOV 5R179F05005#1 / E-3 ML012040470 2 2R171TCV0154 BORON CONCENTRATION MEASUREMENT OUTLET TO VCT FIRST CHECK VALVE 5R179F05006#1 / D-2 ML012040470 2 2R171TCV0155 BORON CONCENTRATION MEASUREMENT OUTLET TO VCT SECOND CHECK VALVE 5R179F05006#1 / D-2 ML012040470 2 2R171TCV0166 CVCS RETURN FROM PRIMARY SAMPLE ISOLATION VALVE 5R179F05007#1 / G-5 ML012040470 2 2R171TCV0182 GAS SUPPLY HEADER TO VCT FIRST CHECK VALVE 5R179F05007#1 / G-7 ML012040470 2 2R171TCV0186 GAS SUPPLY HEADER TO VCT SECOND CHECK VALVE 5R179F05007#1 / F-7 ML012040470 2 2R171TCV0221 CVCS ALT IMMEDIATE BORATION ISOLATION VALVE 5R179F05007#1 / E-4 ML012040470 2 2R171TCV0226 BORIC ACID TANK TO CHARGING PUMP SUCTION BORATION VALVE 5R179F05007#1 / D-4 ML012040470 2 2R171TCV0234A CENTRIFUGAL CHARGING PUMP 1A RECIRC CHECK VALVE 5R179F05007#1 / D-6 ML012040470 2 2R171TCV0234B CENTRIFUGAL CHARGING PUMP 1B RECIRC CHECK VALVE 5R179F05007#1 / D-6 ML012040470 2 2R171TCV0677 POST ACCIDENT SAMPLING SYSTEM TO VCT CHECK VALVE 5R179F05007#1 / G-5 ML012040470 2 2R171TCV0707 CENTRIFUGAL CHARGING PUMP 1B DISCHARGE BYPASS CHECK VALVE 5R179F05007#1 / F-6 ML012040470 2 2R171XCV0023 CVCS LETDOWN IRC CONTAINMENT ISOLATION MOV 5R179F05005#1 / H-3 ML012040470 2 2R171XCV0024 CVCS LETDOWN ORC CONTAINMENT ISOLATION MOV 5R179F05005#1 / H-3 ML012040470 2 2R171XCV0112C CVCS CHARGING PUMPS SUCTION FROM RWST MOV 5R179F05007#1 / C-4 ML012040470 2 2R171XCV0113B CVCS CHARGING PUMPS SUCTION FROM RWST MOV 5R179F05007#1 / C-4 ML012040470 2 2R171XCV0157 CVCS LOW PRESSURE LETDOWN CONTAINMENT ISOLATION VALVE 5R179F05006#1 / F-2 ML012040470 2 2R171XCV0158 CVCS LOW PRESSURE LETDOWN IRC CONTAINMENT ISOLATION CHECK VALVE 5R179F05006#1 / F-2 ML012040470 2 2R171XCV0217 CVCS EMERGENCY BORATION CHECK VALVE 5R179F05007#1 / B-3 ML012040470 2 2R171XCV0218 CVCS EMERGENCY BORATION MOV 5R179F05007#1 / B-3 ML012040470 2 2R171XCV0224 CVCS CHARGING PUMPS SUCTION FROM RWST CHECK VALVE 5R179F05007#1 / B-4 ML012040470 2 2R171XCV0235A CENTRIFUGAL CHARGING PUMP 1A DISCHARGE CHECK VALVE 5R179F05007#1 / B-6 ML012040470 2 2R171XCV0235B CENTRIFUGAL CHARGING PUMP 1B DISCHARGE CHECK VALVE 5R179F05007#1 / D-6 ML012040470 2 2R171XCV0639 CVCS ALT IMMEDIATE BORATION CHECK VALVE 5R179F05007#1 / E-4 ML012040470 2 2R171XCV0671 CVCS SEAL INJECTION HEADER CHECK VALVE 5R179F05007#1 / B-6 ML012040470 2 2R171XCV8348 CENTRIFUGAL CHARGING PUMP 1A SEAL WATER SUPPLY MOV 5R179F05007#1 / B-6 ML012040470 2 2R171XCV8377A CENTRIFUGAL CHARGING PUMP 1A DISCHARGE MOV 5R179F05007#1 / B-6 ML012040470 2 2R171XCV8377B CENTRIFUGAL CHARGING PUMP 1B DISCHARGE MOV 5R179F05007#1 / D-6 ML012040470 2 2R201TCC0012 RHR TRAIN A CCW SUPPLY ORC ISOLATION MOV 5R209F05017#1 / E-2 ML012040470 2 2R201TCC0049 RHR TRAIN A CCW RETURN HEADER IRC ISOLATION MOV 5R209F05017#1 / G-4 ML012040470 2 2R201TCC0050 RHR TRAIN A CCW RETURN HEADER ORC ISOLATION MOV 5R209F05017#1 / G-4 ML012040470 2 2R201TCC0057 RCFC TRAIN A CCW SUPPLY ORC ISOLATION MOV 5R209F05017#1 / D-2 ML012040470 2 2R201TCC0058 RCFC TRAIN A CHILLED WATER/CCW SUPPLY IRC CHECK VALVE 5R209F05017#1 / D-2 ML012040470 2 2R201TCC0059 RCFC TRAIN A CHILLED WATER SUPPLY ORC ISOLATION MOV 5R209F05017#1 / D-2 ML012040470 2 2R201TCC0068 RCFC TRAIN A CHILLED WATER/CCW RETURN IRC ISOLATION MOV 5R209F05017#1 / C-4 ML012040470 2 2R201TCC0069 RCFC TRAIN A CCW RETURN ORC ISOLATION MOV 5R209F05017#1 / D-4 ML012040470 2 2R201TCC0070 RCFC TRAIN A CHILLED WATER RETURN ORC ISOLATION MOV 5R209F05017#1 / C-4 ML012040470 2 2R201TCC0122 RHR TRAIN B CCW SUPPLY ORC ISOLATION MOV 5R209F05018#1 / F-2 ML012040470 2 2R201TCC0129 RHR TRAIN B CCW RETURN HEADER IRC ISOLATION MOV 5R209F05018#1 / G-4 ML012040470 2 2R201TCC0130 RHR TRAIN B CCW RETURN HEADER ORC ISOLATION MOV 5R209F05018#1 / G-4 ML012040470 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 80 of 136 ATTACHMENT 8: Unit 1 ML012040470 Exempt Valve List Valve ID Category Component Description Drawing / Coordinate Class 2R201TCC0136 RCFC TRAIN B CCW SUPPLY LINE ORC ISOLATION MOV 5R209F05018#1 / D-2 ML012040470 2 2R201TCC0137 RCFC TRAIN B CHILLED WATER SUPPLY LINE ISOLATION MOV 5R209F05018#1 / D-2 ML012040470 2 2R201TCC0138 RCFC TRAIN B CHILLED WATER/CCW SUPPLY IRC CHECK VALVE 5R209F05018#1 / D-2 ML012040470 2 2R201TCC0147 RCFC TRAIN B CHILLED WATER/CCW RETURN LINE IRC ISOLATION MOV 5R209F05018#1 / C-4 ML012040470 2 2R201TCC0148 RCFC TRAIN B CCW RETURN LINE ORC ISOLATION MOV 5R209F05018#1 / D-4 ML012040470 2 2R201TCC0149 RCFC TRAIN B CHILLED WATER RETURN ORC ISOLATION MOV 5R209F05018#1 / C-4 ML012040470 2 2R201TCC0182 RHR TRAIN C CCW SUPPLY ORC ISOLATION MOV 5R209F05019#1 / F-1 ML012040470 2 2R201TCC0189 RHR TRAIN C CCW RETURN IRC ISOLATION MOV 5R209F05019#1 / H-4 ML012040470 2 2R201TCC0190 RHR TRAIN C CCW RETURN ORC ISOLATION MOV 5R209F05019#1 / H-4 ML012040470 2 2R201TCC0197 RCFC TRAIN C CCW SUPPLY ORC ISOLATION MOV 5R209F05019#1 / D-2 ML012040470 2 2R201TCC0198 RCFC TRAIN C CHILLED WATER/CCW SUPPLY IRC CHECK VALVE (CIV) 5R209F05019#1 / D-2 ML012040470 2 2R201TCC0199 RCFC TRAIN C CHILLED WATER SUPPLY ORC ISOLATION MOV 5R209F05019#1 / D-2 ML012040470 2 2R201TCC0208 RCFC TRAIN C CHILLED WATER/CCW RETURN IRC ISOLATION MOV 5R209F05019#1 / D-4 ML012040470 2 2R201TCC0209 RCFC TRAIN C CHILLED WATER RETURN LINE ORC ISOLATION MOV 5R209F05019#1 / C-4 ML012040470 2 2R201TCC0210 RCFC TRAIN C CCW RETURN LINE ORC ISOLATION MOV 5R209F05019#1 / D-4 ML012040470 2 2R201TCC0291 REACTOR COOLANT PUMPS CCW SUPPLY ORC ISOLATION MOV 5R209F05021#1 / H-8 ML012040470 2 2R201TCC0318 RCP AND HEAT EXCHANGERS CCW SUPPLY ORC ISOLATION MOV 5R209F05021#1 / H-8 ML012040470 2 2R201TCC0319 RCP AND HEAT EXCHANGERS CCW SUPPLY IRC CHECK VALVE 5R209F05021#1 / G-8 ML012040470 2 2R201TCC0403 RCP AND HEAT EXCHANGERS CCW RETURN HEADER IRC ISOLATION MOV 5R209F05021#1 / B-1 ML012040470 2 2R201TCC0404 RCP AND HEAT EXCHANGERS CCW RETURN ORC ISOLATION MOV 5R209F05021#1 / H-1 ML012040470 2 2R201TCC0446 RCP AND HEAT EXCHANGERS CCW RETURN HEADER MOV-0542/0403 IRC BYPASS CHECK VALVE 5R209F05021#1 / B-1 ML012040470 2 2R201TCC0542 RCP AND HEAT EXCHANGERS CCW RETURN HEADER BYPASS IRC ISOLATION MOV 5R209F05021#1 / B-1 ML012040470 2 2R211XFC0006C SFP COOLING PUMPS 1A&B SUCTION FROM ICSA IRC ISOLATION VALVE 5R219F05028#1 / B-5 ML012040470 2 2R211XFC0007C SFP COOLING PUMPS 1A&B SUCTION FROM ICSA ORC ISOLATION VALVE 5R219F05028#1 / B-4 ML012040470 2 2R211XFC0013E SFP COOLING & PURIFICATION DISCH TO RX CAVITY OR ICSA ORC ISOLATION VALVE 5R219F05028#1 / B-6 ML012040470 2 2R211XFC0013F SFP COOLING & PURIFICATION DISCHARGE TO ICSA IRC ISOLATION VALVE 5R219F05028#1 / B-6 ML012040470 2 2R211XFC0050 SFP COOLING & PURIFICATION TO RX CAVITY IRC ISOLATION VALVE 5R219F05028#1 / B-6 ML012040470 2 2R301TWL0312 RCDT HEAT EXCHANGER OUTLET LINE ISOLATION MOV (IRC) 5R309F05022#1 / E-3 ML012040470 2 2R341TRD0008 RCS VACUUM DEGASSING IRC ISOLATION VALVE 5R349F05046#1 / E-7 ML012040470 2 2R341TRD0010 RCS VACUUM DEGASSING ORC ISOLATION VALVE 5R349F05046#1 / E-7 ML012040470 2 2R371TPO0217 RCP OIL RETURN LINE IRC ISOLATION VALVE 5R379F05042#1 / B-4 ML012040470 2 2R371TPO0218 RCP OIL RETURN LINE ORC ISOLATION VALVE 5R379F05042#1 / B-3 ML012040470 2 2S191TDW0501 DEMIN WATER HEADER TO REACTOR CONTAINMENT BUILDING ISOLATION VALVE 5S199F05034#1 / F-3 ML012040470 2 2S191TDW0502 REACTOR CONTAINMENT BUILDING DEMIN WATER SUPPLY HEADER CHECK VALVE 5S199F05034#1 / F-3 ML012040470 2 2S201TSL0002 HIGH PRESSURE SLUDGE LANCING ORC ISOLATION VALVE 5S209F05057#1 / B-5 ML012040470 2 2S201TSL0004 HIGH PRESSURE SLUDGE LANCING IRC ISOLATION VALVE 5S209F05057#1 / B-6 ML012040470 2 2S201TSL0012 LOW PRESSURE SLUDGE LANCING ORC ISOLATION VALVE 5S209F05057#1 / E-5 ML012040470 2 2S201TSL0014 LOW PRESSURE SLUDGE LANCING IRC ISOLATION VALVE 5S209F05057#1 / E-6 ML012040470 2 2S201TSL0027 SLUDGE LANCING CHEMICAL CLEANING WATER RETURN IRC ISOLATION VALVE 5S209F05057#1 / G-6 ML012040470 2 2S201TSL0029 SLUDGE LANCING CHEMICAL CLEANING WATER RETURN ORC ISOLATION VALVE 5S209F05057#1 / F-5 ML012040470 2 2V141TRA0001 RCB EXHAUST RT-8011 SUPPLY IRC ISOLATION MOV 5V149V00017#1 / G-4 ML012040470 2 2V141TRA0003 RCB EXHAUST RT-8011 RETURN IRC ISOLATION MOV 5V149V00017#1 / F-4 ML012040470 2 2V141TRA0004 RCB EXHAUST RT-8011 SUPPLY ORC ISOLATION MOV 5V149V00017#1 / G-4 ML012040470 2 2V141TRA0006 RCB EXHAUST RT-8011 RETURN ORC ISOLATION MOV 5V149V00017#1 / F-3 ML012040470 2 3Q151TDO0129 FUEL OIL STORAGE TANK EMERGENCY FILL CHECK VALVE 5Q159F00045#1 / H-7 ML012040470 3 3Q151TDO0130 FUEL OIL STORAGE TANK EMERGENCY FILL VALVE 5Q159F00045#1 / H-7 ML012040470 3 3Q151TDO0131 FUEL OIL STORAGE TANK EMERGENCY FILL CHECK VALVE 5Q159F00045#1 / H-5 ML012040470 3 3Q151TDO0132 FUEL OIL STORAGE TANK EMERGENCY FILL VALVE 5Q159F00045#1 / H-5 ML012040470 3 3Q151TDO0133 FUEL OIL STORAGE TANK EMERGENCY FILL CHECK VALVE 5Q159F00045#1 / H-2 ML012040470 3 3Q151TDO0134 FUEL OIL STORAGE TANK EMERGENCY FILL VALVE 5Q159F00045#1 / H-2 ML012040470 3 3R171TCV0220 CVCS NORMAL BORATION CHECK VALVE 5R179F05007#1 / D-2 ML012040470 3 3R171TCV0333 BA TANK 1A TO SUCTION OF CHARGING PUMPS ISOLATION VALVE 5R179F05009#1 / D-4 ML012040470 3 3R171TCV0335A BA BATCHING TANK 1A TO BA TRANSFER PUMP 1A ISOLATION VALVE 5R179F05009#1 / D-4 ML012040470 3 3R171TCV0335B BA BATCHING TANK 1A TO BA TRANSFER PUMP 1B ISOLATION VALVE 5R179F05009#1 / D-4 ML012040470 3 3R171TCV0346 BORIC ACID TRANSFER PUMP 1B RECIRC CHECK VALVE 5R179F05009#1 / D-5 ML012040470 3 3R171TCV0351 BORIC ACID TRANSFER PUMP 1A RECIRC CHECK VALVE 5R179F05009#1 / E-6 ML012040470 3 3R171TCV0352A BORIC ACID FILTER BYPASS VALVE 5R179F05009#1 / D-7 ML012040470 3 3R171TCV0352B BORIC ACID FILTER BYPASS VALVE 5R179F05009#1 / D-6 ML012040470 3 3R171TCV0635 BORIC ACID TANK 1B PURIFIED BORIC ACID FIRST CHECK VALVE 5R179F05009#1 / E-5 ML012040470 3 3R171TCV0636 BORIC ACID TANK 1B PURIFIED BORIC ACID SECOND CHECK VALVE 5R179F05009#1 / E-5 ML012040470 3 3R171TCV0637 BORIC ACID TANK 1A PURIFIED BORIC ACID FIRST CHECK VALVE 5R179F05009#1 / F-5 ML012040470 3 3R171TCV0638 BORIC ACID TANK 1A PURIFIED BORIC ACID SECOND CHECK VALVE 5R179F05009#1 / F-6 ML012040470 3 3R171XCV0204 CVCS REACTOR MAKE-UP WATER CHECK VALVE 5R179F05007#1 / F-2 ML012040470 3 3R171XCV0334 BORIC ACID TANK 1A CHARGING PUMP SUCTION CHECK VALVE 5R179F05009#1 / E-4 ML012040470 3 3R171XCV0338 BORIC ACID TRANSFER PUMP 1A DISCHARGE CHECK VALVE 5R179F05009#1 / D-6 ML012040470 3 3R171XCV0349 BORIC ACID TRANSFER PUMP 1B DISCHARGE CHECK VALVE 5R179F05009#1 / C-6 ML012040470 3 3R201TCC0032 SPENT FUEL POOL HXS CCW SUPPLY HEADER SECOND ISOLATION MOV 5R209F05020#1 / E-6 ML012040470 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 81 of 136 ATTACHMENT 8: Unit 1 ML012040470 Exempt Valve List Valve ID Category Component Description Drawing / Coordinate Class 3R201TCC0231 CCW SURGE TANK 1A REACTOR MAKEUP WATER SUPPLY VALVE 5R209F05017#1 / G-6 ML012040470 3 3R201TCC0235 CCW COMMON SUPPLY HEADER FIRST ISOLATION MOV 5R209F05020#1 / D-7 ML012040470 3 3R201TCC0236 CCW COMMON SUPPLY HEADER SECOND ISOLATION MOV 5R209F05020#1 / D-6 ML012040470 3 3R201TCC0297 RCDT & EXCESS LETDOWN HXS CCW SUPPLY MOV 5R209F05021#1 / G-7 ML012040470 3 3R201TCC0321 RCP 1C THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#1 / E-5 ML012040470 3 3R201TCC0327 RCP 1A THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#1 / B-8 ML012040470 3 3R201TCC0346 RCP 1D THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#1 / E-8 ML012040470 3 3R201TCC0363 RCP 1B THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#1 / B-5 ML012040470 3 3R201TCC0392 RCDT HEAT EXCHANGER 1A CCW SUPPLY MOV 5R209F05021#1 / G-3 ML012040470 3 3R201TCC0393 EXCESS LETDOWN HEAT EXCHANGER 1A CCW SUPPLY MOV 5R209F05021#1 / G-3 ML012040470 3 3R201TCC0402 EXCESS LETDOWN HEAT EXCHANGER 1A CCW RETURN SECOND CHECK VALVE 5R209F05021#1 / C-2 ML012040470 3 3R201TCC0447 SPENT FUEL POOL HXS CCW SUPPLY HEADER FIRST ISOLATION MOV 5R209F05020#1 / E-7 ML012040470 3 3R201TCC0540 RCDT HEAT EXCHANGER 1A CCW RETURN FIRST CHECK VALVE 5R209F05021#1 / D-1 ML012040470 3 3R201TCC0541 RCDT HEAT EXCHANGER 1A CCW RETURN SECOND CHECK VALVE 5R209F05021#1 / D-1 ML012040470 3 3R201TCC0756 RCP 1C THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#1 / E-4 ML012040470 3 3R201TCC0757 RCP 1B THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#1 / B-5 ML012040470 3 3R201TCC0758 RCP 1D THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#1 / E-7 ML012040470 3 3R201TCC0759 RCP 1A THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#1 / B-8 ML012040470 3 3R201TCC0763 EXCESS LETDOWN HEAT EXCHANGER 1A CCW RETURN FIRST CHECK VALVE 5R209F05021#1 / C-2 ML012040470 3 3R201TCC0768 CHARGING PUMP COOLERS CCW TRAIN A SUPPLY ISOLATION MOV 5R209F05020#1 / F-7 ML012040470 3 3R201TCC0770 CHARGING PUMP COOLERS CCW TRAIN B SUPPLY ISOLATION MOV 5R209F05020#1 / G-7 ML012040470 3 3R201TCC0771 CHARGING PUMP COOLERS CCW TRAIN C SUPPLY ISOLATION MOV 5R209F05020#1 / G-7 ML012040470 3 3R201TCC0772 CHARGING PUMP COOLERS CCW TRAIN A RETURN ISOLATION MOV 5R209F05020#1 / B-7 ML012040470 3 3R201TCC0774 CHARGING PUMP COOLERS CCW TRAIN B RETURN ISOLATION MOV 5R209F05020#1 / B-7 ML012040470 3 3R201TCC0775 CHARGING PUMP COOLERS CCW TRAIN C RETURN ISOLATION MOV 5R209F05020#1 / A-7 ML012040470 3 3R271TRM0003 RMW PUMP 1A DISCHARGE CHECK VALVE 5R279F05033#1 / F-5 ML012040470 3 3R271TRM0007 RMWST DEMIN WATER SUPPLY CHECK VALVE 5R279F05033#1 / G-2 ML012040470 3 3R271TRM0010 RMW PUMP 1B DISCHARGE CHECK VALVE 5R279F05033#1 / E-6 ML012040470 3 3R271TRM0013 RMWST BRS & WL SYSTEMS RETURN CHECK VALVE 5R279F05033#1 / G-6 ML012040470 3 3R271TRM0048 REACTOR MAKE-UP WATER TO CCW SURGE TANK CHECK VALVE 5R279F05033#1 / E-8 ML012040470 3 3R271TRM0103 RMW PUMP 1B RECIRC LINE CHECK VALVE 5R279F05033#1 / F-6 ML012040470 3 3R271TRM0104 RMW PUMP 1A RECIRC LINE CHECK VALVE 5R279F05033#1 / F-6 ML012040470 3 3R281TEW0188 ECW PUMP 1A DISCHARGE STRAINER BACKFLUSH THROTTLE VALVE 5R289F05038SH1#1 / C-2 ML012040470 3 3R281TEW0189 ECW PUMP 1B DISCHARGE STRAINER BACKFLUSH THROTTLE VALVE 5R289F05038SH2#1 / C-2 ML012040470 3 3R281TEW0190 ECW PUMP 1C DISCHARGE STRAINER BACKFLUSH THROTTLE VALVE 5R289F05038SH3#1 / C-2 ML012040470 3 3R281TEW0253 ECW SCREEN WASH BOOSTER PUMP 1A DISCHARGE CHECK VALVE 5R289F05039#1 / D-7 ML012040470 3 3R281TEW0254 ECW SCREEN WASH BOOSTER PUMP 1B DISCHARGE CHECK VALVE 5R289F05039#1 / D-5 ML012040470 3 3R281TEW0255 ECW SCREEN WASH BOOSTER PUMP 1C DISCHARGE CHECK VALVE 5R289F05039#1 / D-2 ML012040470 3 3R281TEW0277 ECW PUMP 1A DISCHARGE STRAINER EMERGENCY BACKFLUSH VALVE 5R289F05038SH1#1 / C-2 ML012040470 3 3R281TEW0278 ECW PUMP 1B DISCHARGE STRAINER EMERGENCY BACKFLUSH VALVE 5R289F05038SH2#1 / C-2 ML012040470 3 3R281TEW0279 ECW PUMP 1C DISCHARGE STRAINER EMERGENCY BACKFLUSH VALVE 5R289F05038SH3#1 / C-2 ML012040470 3 3R281TEW0370A ECW PUMP 1A DISCHARGE VENT LINE CHECK VALVE 5R289F05038SH1#1 / C-3 ML012040470 3 3R281TEW0370B ECW PUMP 1B DISCHARGE VENT LINE CHECK VALVE 5R289F05038SH2#1 / C-3 ML012040470 3 3R281TEW0370C ECW PUMP 1C DISCHARGE VENT LINE CHECK VALVE 5R289F05038SH3#1 / C-3 ML012040470 3 3R281TEW0403 ECW PUMP 1A DISCHARGE STRAINER EMERGENCY BACKFLUSH CHECK VALVE 5R289F05038SH1#1 / C-3 ML012040470 3 3R281TEW0404 ECW PUMP 1B DISCHARGE STRAINER EMERGENCY BACKFLUSH CHECK VALVE 5R289F05038SH2#1 / C-3 ML012040470 3 3R281TEW0405 ECW PUMP 1C DISCHARGE STRAINER EMERGENCY BACKFLUSH CHECK VALVE 5R289F05038SH3#1 / C-3 ML012040470 3 3R281TEW1007 DIESEL GENERATOR #11 ECW VACUUM BREAKER CHECK VALVE 5R289F05038SH1#1 / F-1 ML012040470 3 3R281TEW1011 DIESEL GENERATOR #12 ECW VACUUM BREAKER CHECK VALVE 5R289F05038SH2#1 / F-1 ML012040470 3 3R281TEW1015 DIESEL GENERATOR #13 ECW VACUUM BREAKER CHECK VALVE 5R289F05038SH3#1 / F-1 ML012040470 3 3R281TEW1024 CCW HEAT EXCHANGER 1A VACUUM BREAKER CHECK VALVE 5R289F05038SH1#1 / E-7 ML012040470 3 3R281TEW1026 CCW HEAT EXCHANGER 1B VACUUM BREAKER CHECK VALVE 5R289F05038SH2#1 / E-7 ML012040470 3 3R281TEW1028 CCW HEAT EXCHANGER 1C VACUUM BREAKER CHECK VALVE 5R289F05038SH3#1 / E-7 ML012040470 3 A1CCFV0864 RCFC TRAIN C CHILLED WATER RETURN ORC FLOW CONTROL VALVE 5R209F05019#1 / C-4 ML012040470 2 A1CCFV4540 POST ACCIDENT SAMPLING SYSTEM CCW SUPPLY FIRST ISOLATION SOLENOID VALVE 5R209F05020#1 / D-7 ML012040470 3 A1CCFV4656 CHARGING PUMPS CCW SUPPLY HEADER CROSS-TIE FLOW CONTROL VALVE 5R209F05020#1 / G-7 ML012040470 3 A1CCFV4657 CHARGING PUMPS CCW RETURN HEADER CROSS-TIE FLOW CONTROL VALVE 5R209F05020#1 / A-7 ML012040470 3 A1CHTV9476A TRAIN A ESSENTIAL CHILLED WATER CONTROL ROOM AHU 11A TEMPERATURE CONTROL VALVE 3V119V10002#1 / F-7 ML012040470 3 A1CHTV9476B TRAIN A ESSENTIAL CHILLED WATER CONTROL ROOM AHU 11A BYPASS TEMPERATURE 3V119V10002#1 / E-7 ML012040470 3 A1CMFV4100 CONTROL VALVE SAMPLE POINT #1 FLOW ISOLATION VALVE 5Z169Z00046#1 / G-6 ML012040470 2 A1CMFV4101 CONTAINMENT HYDROGEN MONITORING TO PAM-I FLOW ISOLATION VALVE 5Z169Z00046#1 / F-4 ML012040470 2 A1CMFV4124 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #3 FLOW ISOLATION VALVE 5Z169Z00046#1 / F-6 ML012040470 2 A1CMFV4125 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #5 FLOW ISOLATION VALVE 5Z169Z00046#1 / F-6 ML012040470 2 A1CMFV4126 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #6 FLOW ISOLATION VALVE 5Z169Z00046#1 / E-6 ML012040470 2 A1CMFV4127 CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-I FLOW ISOLATION 5Z169Z00046#1 / E-4 ML012040470 2 A1CMFV4128 VALVE CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-I FLOW ISOLATION 5Z169Z00046#1 / E-5 ML012040470 2 A1CMFV4135 VALVE CONTAINMENT HYDROGEN MONITORING SAMPLE INLET TO PAM-I FLOW ISOLATION VALVE 5Z169Z00046#1 / F-5 ML012040470 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 82 of 136 ATTACHMENT 8: Unit 1 ML012040470 Exempt Valve List Valve ID Category Component Description Drawing / Coordinate Class A1CVFV8400A CONCENTRATED BA POLISHING DEMIN INLET FLOW CONTROL VALVE 5R179F05009#1 / D-8 ML012040470 3 A1CVHCV0206 CENTRIFUGAL CHARGING PUMP 1B DISCHARGE BYPASS FLOW CONTROL VALVE 5R179F05007#1 / D-6 ML012040470 2 A1EDFV7800 CONTAINMENT NORMAL SUMP SUMP PUMP DISCHARGE (ORC) FLOW CONTROL VALVE 5Q069F05030#1 / G-6 ML012040470 2 A1EWFV6914 ECW SCREEN WASH PUMP 1A DISCHARGE VALVE 5R289F05039#1 / D-7 ML012040470 3 A1EWFV6935 ECW RETURN HEADER BLOWDOWN VALVE 5R289F05038SH1#1 / E-5 ML012040470 3 A1RCFV3653 PRESSURIZER RELIEF TANK VENT IRC CONTAINMENT ISOLATION VALVE 5R149F05004#1 / F-4 ML012040470 2 A1SBFV4186 STEAM GENERATOR 1D SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#1 / D-5 ML012040470 2 A1SBFV4189 STEAM GENERATOR 1A SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#1 / H-5 ML012040470 2 A1SIFV3936 RWST OUTLET TO REFUELING WATER PURIF PUMP FIRST ISOLATION VALVE 5N129F05013#1 / F-2 ML012040470 2 A1SIFV3971 SIS CHECK VALVE TEST LINE ORC ISOLATION VALVE 5N129F05016#1 / F-7 ML012040470 2 A1SIFV3983 SAFETY INJECTION ACCUMULATORS ORC NITROGEN SUPPLY VALVE 5N129F05016#1 / G-2 ML012040470 2 A1SIHCV0900 SAFETY INJECTION ACCUMULATOR NITROGEN SUPPLY VENT VALVE 5N129F05016#1 / G-2 ML012040470 2 A1SIPV3928 SAFETY INJECTION ACCUMULATOR 1C NITROGEN SUPPLY VENT VALVE 5N129F05016#1 / C-4 ML012040470 2 A1WLFV4920 REACTOR COOLANT DRAIN TANK VENT TO GASEOUS WASTE PROCESSING IRC ISOLATION 5R309F05022#1 / G-6 ML012040470 2 B1CCFV0862 VALVE RCFC TRAIN A CHILLED WATER RETURN ORC FLOW CONTROL VALVE 5R209F05017#1 / B-4 ML012040470 2 B1CCFV4541 POST ACCIDENT SAMPLING SYSTEM CCW SUPPLY SECOND ISOLATION SOLENOID VALVE 5R209F05020#1 / D-8 ML012040470 3 B1CHTV9486A TRAIN B ESSENTIAL CHILLED WATER CONTROL ROOM AHU 11B OUTLET TEMPERATURE 3V119V10002#1 / F-4 ML012040470 3 B1CHTV9486B CONTROL VALVE TRAIN B ESSENTIAL CHILLED WATER CONTROL ROOM AHU 11B BYPASS TEMPERATURE VALVE 3V119V10002#1 / E-4 ML012040470 3 B1CVFV8400B CONCENTRATED BA POLISHING DEMIN INLET FLOW CONTROL VALVE 5R179F05009#1 / C-8 ML012040470 3 B1EWFV6924 ECW SCREEN WASH PUMP 1B DISCHARGE VALVE 5R289F05039#1 / D-5 ML012040470 3 B1EWFV6936 ECW RETURN HEADER BLOWDOWN VALVE 5R289F05038SH2#1 / E-5 ML012040470 3 B1IAFV8565 INSTRUMENT AIR SUPPLY TO REACTOR CONTAINMENT BUILDING ORC ISOLATION VALVE 5Q119F05040#1 / D-4 ML012040470 2 B1PSFV4450 PRESSURIZER VAPOR SAMPLE LINE IRC ISOLATION VALVE 5Z329Z00045#1 / H-8 ML012040470 2 B1PSFV4451 PRESSURIZER LIQUID SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / G-8 ML012040470 2 B1PSFV4456 RCS HOT LEG SAMPLE HEADER ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / F-7 ML012040470 2 B1PSFV4466 SI ACCUMULATORS SAMPLE HEADER ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / B-7 ML012040470 2 B1PSFV4823 RHR SAMPLE HEADER IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / D-8 ML012040470 2 B1RCFV3651 PRESSURIZER RELIEF TANK SPRAY REACTOR MAKEUP WATER SUPPLY CONTAINMENT ISOLATION 5R149F05004#1 / E-2 ML012040470 2 B1RCFV3652 VALVE PRESSURIZER RELIEF TANK VENT ORC CONTAINMENT ISOLATION VALVE 5R149F05004#1 / F-4 ML012040470 2 B1RMFV7663 RMW TO CVCS SUPPLY HEADER FLOW CONTROL VALVE 5R279F05033#1 / F-7 ML012040470 3 B1SBFV4188 STEAM GENERATOR 1B SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#1 / H-1 ML012040470 2 B1SIFV3937 RWST OUTLET TO REFUELING WATER PURIF PUMP SECOND ISOLATION VALVE 5N129F05013#1 / F-2 ML012040470 2 B1SIFV3970 SIS CHECK VALVE TEST LINE IRC ISOLATION VALVE 5N129F05016#1 / F-7 ML012040470 2 B1SIHV0899 ACCUMULATOR VENT BACKUP VLV (SI-HCV-0899) 5N129F05016#1 / F-2 ML012040470 2 B1SIPV3930 SAFETY INJECTION ACCUMULATOR 1A NITROGEN SUPPLY VENT VALVE 5N129F05016#1 / G-4 ML012040470 2 B1WLFV4913 RCDT HEAT EXCHANGER OUTLET ISOLATION VALVE (ORC) 5R309F05022#1 / F-3 ML012040470 2 B1WLFV4919 REACTOR COOLANT DRAIN TANK VENT TO GASEOUS WASTE PROCESSING ORC ISOLATION 5R309F05022#1 / G-5 ML012040470 2 C1CCFV0863 VALVE RCFC TRAIN B CHILLED WATER RETURN ORC FLOW CONTROL VALVE 5R209F05018#1 / C-4 ML012040470 2 C1CHTV9496A TRAIN C ESSENTIAL CHILLED WATER CONTROL ROOM AHU 11C OUTLET TEMPERATURE 3V119V10002#1 / F-1 ML012040470 3 C1CHTV9496B CONTROL VALVE TRAIN C ESSENTIAL CHILLED WATER CONTROL ROOM AHU 11C BYPASS TEMPERATURE 3V119V10002#1 / E-1 ML012040470 3 C1CMFV4103 CONTROL VALVE CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #2 FLOW ISOLATION VALVE 5Z169Z00046#1 / E-6 ML012040470 2 C1CMFV4104 CONTAINMENT HYDROGEN MONITORING TO PAM-II FLOW ISOLATION VALVE 5Z169Z00046#1 / D-4 ML012040470 2 C1CMFV4129 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #4 FLOW ISOLATION VALVE 5Z169Z00046#1 / D-6 ML012040470 2 C1CMFV4130 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #7 FLOW ISOLATION VALVE 5Z169Z00046#1 / D-6 ML012040470 2 C1CMFV4131 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #8 FLOW ISOLATION VALVE 5Z169Z00046#1 / C-6 ML012040470 2 C1CMFV4133 CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-II FLOW ISOLATION 5Z169Z00046#1 / C-4 ML012040470 2 C1CMFV4134 VALVE CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-II FLOW ISOLATION 5Z169Z00046#1 / C-5 ML012040470 2 C1CMFV4136 VALVE CONTAINMENT HYDROGEN MONITORING SAMPLE INLET TO PAM-II FLOW ISOLATION VALVE 5Z169Z00046#1 / D-5 ML012040470 2 C1CVHCV0218 CVCS SEAL WATER INJECTION FLOW CONTROL VALVE 5R179F05007#1 / B-7 ML012040470 2 C1EWFV6934 ECW SCREEN WASH PUMP 1C DISCHARGE VALVE 5R289F05039#1 / D-3 ML012040470 3 C1EWFV6937 ECW RETURN HEADER BLOWDOWN VALVE 5R289F05038SH3#1 / E-5 ML012040470 3 C1PSFV4451B PRESSURIZER LIQUID SAMPLE LINE ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / F-7 ML012040470 2 C1PSFV4452 PRESSURIZER VAPOR SAMPLE LINE ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / G-7 ML012040470 2 C1PSFV4454 RCS HOT LEG 1A SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / F-8 ML012040470 2 C1PSFV4455 RCS HOT LEG 1C SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / E-8 ML012040470 2 C1PSFV4461 RHR SAMPLE HEADER ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / D-7 ML012040470 2 C1PSFV4824 SI ACCUMULATOR SAMPLE HEADER IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#1 / B-8 ML012040470 2 C1RMFV7659 RMW TO CVCS SUPPLY HEADER FLOW CONTROL VALVE 5R279F05033#1 / F-7 ML012040470 3 C1SBFV4187 STEAM GENERATOR 1C SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#1 / D-1 ML012040470 2 C1SIPV3929 SAFETY INJECTION ACCUMULATOR 1B NITROGEN SUPPLY VENT VALVE 5N129F05016#1 / E-4 ML012040470 2 D1AFFV0143 TERRY TURBINE WARM-UP VALVE 5S141F00024#1 / G-8 ML012040470 3 D1CCFV4493 RCP AND HEAT EXCHANGERS CCW RETURN ORC FLOW CONTROL VALVE 5R209F05021#1 / H-1 ML012040470 2 N1CCPSV4492 CCW NNS OUTLET HEADER RELIEF VALVE 5R209F05020#1 / B-7 ML012040470 3 N1CCPSV4511 CCW HX 1A OUTLET RELIEF VALVE 5R209F05017#1 / B-5 ML012040470 3 N1CCPSV4516 CCW HX 1B OUTLET RELIEF VALVE 5R209F05018#1 / B-6 ML012040470 3 N1CCPSV4521 CCW HX 1C OUTLET RELIEF VALVE 5R209F05019#1 / B-6 ML012040470 3 N1CCPSV4532 RHR HX 1A OUTLET RELIEF VALVE 5R209F05017#1 / G-3 ML012040470 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 83 of 136 ATTACHMENT 8: Unit 1 ML012040470 Exempt Valve List Valve ID Category Component Description Drawing / Coordinate Class N1CCPSV4533 RHR PUMP 1A OUTLET RELIEF VALVE 5R209F05017#1 / G-4 ML012040470 3 N1CCPSV4537 RCFC COOLING COIL 11A OUTLET RELIEF VALVE 5R209F05017#1 / E-4 ML012040470 3 N1CCPSV4539 RCFC COOLING COIL 12A OUTLET RELIEF VALVE 5R209F05017#1 / C-4 ML012040470 3 N1CCPSV4549 RHR HX 1B OUTLET RELIEF VALVE 5R209F05018#1 / G-2 ML012040470 3 N1CCPSV4550 RHR PUMP 1B OUTLET RELIEF VALVE 5R209F05018#1 / G-3 ML012040470 3 N1CCPSV4554 RCFC COOLING COIL 11B OUTLET RELIEF VALVE 5R209F05018#1 / E-4 ML012040470 3 N1CCPSV4556 RCFC COOLING COIL 12B OUTLET RELIEF VALVE 5R209F05018#1 / C-4 ML012040470 3 N1CCPSV4566 RHR HX 1C OUTLET RELIEF VALVE 5R209F05019#1 / G-2 ML012040470 3 N1CCPSV4567 RHR PUMP 1C OUTLET RELIEF VALVE 5R209F05019#1 / G-3 ML012040470 3 N1CCPSV4571 RCFC COOLING COIL 11C OUTLET RELIEF VALVE 5R209F05019#1 / E-4 ML012040470 3 N1CCPSV4573 RCFC COOLING COIL 12C OUTLET RELIEF VALVE 5R209F05019#1 / C-3 ML012040470 3 N1CCPSV4580 CCP 1B LUBE OIL COOLER OUTLET RELIEF VALVE 5R209F05020#1 / G-6 ML012040470 3 N1CCPSV4582 CCP 1A LUBE OIL COOLER OUTLET RELIEF VALVE 5R209F05020#1 / G-4 ML012040470 3 N1CCPSV4584 PDP SUPPLEMENTARY COOLER AHU OUTLET RELIEF VALVE 5R209F05020#1 / G-5 ML012040470 3 N1CCPSV4586 CCP SUPPLEMENTARY COOLER AHU 11A OUTLET RELIEF VALVE 5R209F05020#1 / G-3 ML012040470 3 N1CCPSV4588 CCP SUPPLEMENTARY COOLER AHU 11B OUTLET RELIEF VALVE 5R209F05020#1 / G-5 ML012040470 3 N1CCPSV4613 SEAL WATER HX 1A OUTLET RELIEF VALVE 5R209F05020#1 / E-2 ML012040470 3 N1CCPSV4616 RCP 1A UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / C-6 ML012040470 3 N1CCPSV4618 RCP 1A LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / B-6 ML012040470 3 N1CCPSV4620 RCP 1A THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#1 / A-6 ML012040470 3 N1CCPSV4622 RCP 1B UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / C-3 ML012040470 3 N1CCPSV4624 RCP 1B LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / B-3 ML012040470 3 N1CCPSV4626 RCP 1B THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#1 / A-3 ML012040470 3 N1CCPSV4628 RCP 1C UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / F-3 ML012040470 3 N1CCPSV4630 RCP 1C LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / E-3 ML012040470 3 N1CCPSV4632 RCP 1C THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#1 / D-3 ML012040470 3 N1CCPSV4634 RCP 1D UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / F-6 ML012040470 3 N1CCPSV4636 RCP 1D LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#1 / E-6 ML012040470 3 N1CCPSV4638 RCP 1D THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#1 / D-6 ML012040470 3 N1CCPSV4639 RCB CCW RETURN HEADER RELIEF VALVE 5R209F05021#1 / C-2 ML012040470 3 N1CCPSV4645 RCP 1A MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#1 / D-7 ML012040470 3 N1CCPSV4645A RCP 1A MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#1 / C-7 ML012040470 3 N1CCPSV4646 RCP 1B MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#1 / D-3 ML012040470 3 N1CCPSV4646A RCP 1B MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#1 / C-3 ML012040470 3 N1CCPSV4647 RCP 1C MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#1 / G-3 ML012040470 3 N1CCPSV4647A RCP 1C MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#1 / F-3 ML012040470 3 N1CCPSV4648 RCP 1D MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#1 / G-6 ML012040470 3 N1CCPSV4648A RCP 1D MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#1 / F-6 ML012040470 3 N1CHPSV9471 ECHW TRAIN A EXPANSION TANK VTS004 5V119V10001#1 / H-7 ML012040470 3 N1CHPSV9471A ECHW TRAIN A EXPANSION TANK VTS004 NITROGEN 5V119V10001#1 / H-7 ML012040470 3 N1CHPSV9481 ECHW TRAIN B EXPANSION TANK VTS005 5V119V10001#1 / E-7 ML012040470 3 N1CHPSV9481A ECHW TRAIN B EXPANSION TANK VTS005 NITROGEN 5V119V10001#1 / E-7 ML012040470 3 N1CHPSV9491 ECHW TRAIN C EXPANSION TANK VTS006 5V119V10001#1 / C-7 ML012040470 3 N1CHPSV9491A ECHW TRAIN C EXPANSION TANK VTS006 NITROGEN 5V119V10001#1 / C-7 ML012040470 3 N1CHPSV9502 ECHW TRAIN A ESSEN CHLR 12A OUTLET 5V119V10001#1 / G-4 ML012040470 3 N1CHPSV9508 ECHW TRAIN B ESSEN CHLR 12B OUTLET 5V119V10001#1 / E-4 ML012040470 3 N1CHPSV9514 ECHW TRAIN C ESSEN CHLR 12C OUTLET 5V119V10001#1 / B-4 ML012040470 3 N1CVFCV0110A BORIC ACID TO CVCS BLENDER TEE FLOW CONTROL VALVE 5R179F05007#1 / D-2 ML012040470 2 N1CVFCV0110B CVCS BLENDED FLOW TO VCT OUTLET FLOW CONTROL VALVE 5R179F05007#1 / F-3 ML012040470 2 N1CVFCV0111A RX MAKE-UP TO CVCS BLENDING TEE FLOW CONTROL VALVE 5R179F05007#1 / F-2 ML012040470 2 N1CVFCV0111B CVCS BLENDED FLOW TO VCT FLOW CONTROL VALVE 5R179F05007#1 / F-3 ML012040470 2 N1CVFCV0201 CENTRIFUGAL CHARGING PUMP 1A RECIRC FLOW CONTROL VALVE 5R179F05007#1 / C-6 ML012040470 2 N1CVFCV0202 CENTRIFUGAL CHARGING PUMP 1B RECIRC FLOW CONTROL VALVE 5R179F05007#1 / D-6 ML012040470 2 N1CVPSV3101 CVCS VOLUME CONTROL TANK PRESSURE RELIEF VALVE 5R179F05007#1 / F-4 ML012040470 2 N1CVPSV3376 BTRS LETDOWN CHILLER HX INLET PRESSURE RELIEF VALVE 5R179F05008#1 / F-2 ML012040470 2 N1EWPSV6853 CCW HEAT EXCHANGER TRAIN A PRESSURE RELIEF 5R289F05038SH1#1 / G-7 ML012040470 3 N1EWPSV6855 DG HEAT EXCHANGER TRAIN A PRESSURE RELIEF 5R289F05038SH1#1 / G-2 ML012040470 3 N1EWPSV6856 CCW PUMP SUPP CLR TRAIN A PRESSURE RELIEF 5R289F05038SH1#1 / G-8 ML012040470 3 N1EWPSV6863 CCW HEAT EXCHANGER TRAIN B PRESSURE RELIEF 5R289F05038SH2#1 / G-7 ML012040470 3 N1EWPSV6865 DG HEAT EXCHANGER TRAIN B PRESSURE RELIEF 5R289F05038SH2#1 / G-2 ML012040470 3 N1EWPSV6866 CCW PUMP SUPP CLR TRAIN B PRESSURE RELIEF 5R289F05038SH2#1 / G-8 ML012040470 3 N1EWPSV6873 CCW HEAT EXCHANGER TRAIN C PRESSURE RELIEF 5R289F05038SH3#1 / G-7 ML012040470 3 N1EWPSV6875 DG HEAT EXCHANGER TRAIN C PRESSURE RELIEF 5R289F05038SH3#1 / G-2 ML012040470 3 N1EWPSV6876 CCW PUMP SUPP CLR TRAIN C PRESSURE RELIEF 5R289F05038SH3#1 / G-8 ML012040470 3 N1EWPSV6904 EAB HVAC CHILLER 4 TRAIN A PRESSURE RELIEF 5R289F05038SH1#1 / G-4 ML012040470 3 N1EWPSV6905 EAB HVAC CHILLER 5 TRAIN B PRESSURE RELIEF 5R289F05038SH2#1 / G-4 ML012040470 3 N1EWPSV6906 EAB HVAC CHILLER 6 TRAIN C PRESSURE RELIEF 5R289F05038SH3#1 / G-4 ML012040470 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 84 of 136 ATTACHMENT 8: Unit 1 ML012040470 Exempt Valve List Valve ID Category Component Description Drawing / Coordinate Class N1FWFCV0551 STEAM GENERATOR 1A FEEDWATER REG VALVE 5S139F00063#1 / D-8 ML012040470 NC N1FWFCV0552 STEAM GENERATOR 1B FEEDWATER REG VALVE 5S139F00063#1 / D-6 ML012040470 NC N1FWFCV0553 STEAM GENERATOR 1C FEEDWATER REG VALVE 5S139F00063#1 / D-4 ML012040470 NC N1FWFCV0554 STEAM GENERATOR 1D FEEDWATER REG VALVE 5S139F00063#1 / D-2 ML012040470 NC N1FWFV7151 STEAM GENERATOR 1A LOW POWER FEED REG VALVE 5S139F00063#1 / D-7 ML012040470 NC N1FWFV7152 STEAM GENERATOR 1B LOW POWER FEED REG VALVE 5S139F00063#1 / D-5 ML012040470 NC N1FWFV7153 STEAM GENERATOR 1C LOW POWER FEED REG VALVE 5S139F00063#1 / D-3 ML012040470 NC N1FWFV7154 STEAM GENERATOR 1D LOW POWER FEED REG VALVE 5S139F00063#1 / D-1 ML012040470 NC N1LUPSV5482 LUBE OIL CIRC PUMP DISCHARGE SAFETY VALVE 5Q159F22542#1 / D-7 ML012040470 3 N1LUPSV5582 LUBE OIL CIRC PUMP DISCHARGE SAFETY VALVE 5Q159F22542#1 / D-5 ML012040470 3 N1LUPSV5682 LUBE OIL CIRC PUMP DISCHARGE SAFETY VALVE 5Q159F22542#1 / D-2 ML012040470 3 N1RHPSV3934 LHSI PUMP 1A HOT LEG RECIRC RELIEF VALVE 5R169F20000#1 / C-4 ML012040470 2 N1RHPSV3943 LHSI PUMP 1B HOT LEG RECIRC RELIEF VALVE 5R169F20000#1 / F-4 ML012040470 2 N1RHPSV3944 LHSI PUMP 1C HOT LEG RECIRC RELIEF VALVE 5R169F20000#1 / H-4 ML012040470 2 N1SIFV3950 LO HEAD SAFETY INJECTION TRAIN A TO LOOP 1A COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#1 / B-2 ML012040470 2 N1SIFV3951 TY INJECTION TRAIN A TO LOOP 1A HOT LEG SIS TEST ISOLATION VALVE 5R169F20000#1 / C-2 ML012040470 2 N1SIFV3952 HI HEAD SAFETY INJECTION TRAIN A TO LOOP 1A COLD LEG SIS TEST ISOLATION VALVE 5N129F05013#1 / F-7 ML012040470 2 N1SIFV3953 HI HEAD SAFETY INJECTION TRAIN A TO LOOP 1A HOT LEG SIS TEST ISOLATION VALVE 5N129F05013#1 / G-7 ML012040470 2 N1SIFV3954 SAFETY INJECTION TRAIN A TO LOOP 1A HOT LEG SIS TEST ISOLATION VALVE 5N129F05013#1 / G-8 ML012040470 2 N1SIFV3955 LO HEAD SAFETY INJECTION TRAIN B TO LOOP 1B COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#1 / E-2 ML012040470 2 N1SIFV3956 LO HEAD SAFETY INJECTION TRAIN B TO LOOP 1B HOT LEG SIS TEST ISOLATION VALVE 5R169F20000#1 / F-2 ML012040470 2 N1SIFV3957 HI HEAD SAFETY INJECTION TRAIN B TO LOOP 1B COLD LEG SIS TEST ISOLATION VALVE 5N129F05014#1 / F-7 ML012040470 2 N1SIFV3958 HI HEAD SAFETY INJECTION TRAIN B TO LOOP 1B HOT LEG SIS TEST ISOLATION VALVE 5N129F05014#1 / G-7 ML012040470 2 N1SIFV3959 SAFETY INJECTION TRAIN B TO LOOP 1B HOT LEG SIS TEST ISOLATION VALVE 5N129F05014#1 / G-8 ML012040470 2 N1SIFV3960 LO HEAD SAFETY INJECTION TRAIN C TO LOOP 1C COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#1 / G-2 ML012040470 2 N1SIFV3964 SAFETY INJECTION TRAIN C PUMPS TO LOOP 1C HOT LEG SIS TEST ISOLATION VALVE 5N129F05015#1 / G-7 ML012040470 2 N1SIFV3967 SI ACC 1B OUTLET CK SI-0046B DOWNSTREAM SIS TEST VALVE 5N129F05016#1 / D-7 ML012040470 2 N1SIFV3968 SI ACC 1B OUTLET CK SI-0046B UPSTREAM SIS TEST VALVE 5N129F05016#1 / D-6 ML012040470 2 N1SIFV3969 SI ACC 1A OUTLET CK SI-0046A UPSTREAM SIS TEST VALVE 5N129F05016#1 / G-6 ML012040470 2 N1SIFV3972 SI ACC 1A OUTLET CK SI-0046A DOWNSTREAM SIS TEST VALVE 5N129F05016#1 / G-6 ML012040470 2 N1SIFV3973 SAFETY INJECTION ACCUMULATOR 1A FILL LINE ISOLATION VALVE 5N129F05016#1 / F-4 ML012040470 2 N1SIFV3974 SAFETY INJECTION ACCUMULATOR 1B FILL LINE ISOLATION VALVE 5N129F05016#1 / D-4 ML012040470 2 N1SIFV3975 SAFETY INJECTION ACCUMULATOR 1C FILL LINE ISOLATION VALVE 5N129F05016#1 / B-4 ML012040470 2 N1SIPSV3935 TRAIN A SI PUMP SUCTION HEADER RELIEF VALVE 5N129F05013#1 / C-2 ML012040470 2 N1SIPSV3938 TRAIN A HHSI HOT LEG/COLD LEG RELIEF VALVE 5N129F05013#1 / G-6 ML012040470 2 N1SIPSV3939 TRAIN B SI PUMP SUCTION HEADER RELIEF VALVE 5N129F05014#1 / D-2 ML012040470 2 N1SIPSV3940 TRAIN B HHSI HOT LEG/COLD LEG RELIEF VALVE 5N129F05014#1 / F-6 ML012040470 2 N1SIPSV3941 TRAIN C SI PUMP SUCTION HEADER RELIEF VALVE 5N129F05015#1 / C-2 ML012040470 2 N1SIPSV3942 TRAIN C HHSI HOT LEG/COLD LEG RELIEF VALVE 5N129F05015#1 / F-6 ML012040470 2 N1SIPSV3977 SI ACCUMULATOR TANK 1C RELIEF VALVE 5N129F05016#1 / C-4 ML012040470 2 N1SIPSV3980 SI ACCUMULATOR TANK 1B RELIEF VALVE 5N129F05016#1 / E-4 ML012040470 2 N1SIPSV3981 SI ACCUMULATOR TANK 1A RELIEF VALVE 5N129F05016#1 / G-4 ML012040470 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 85 of 136 ATTACHMENT 9: Unit 2 ML012040470 Exempt Valve List Valve ID Component Description Drawing / Category Class Coordinate 2N102XCS0001A CONTAINMENT SPRAY PUMP 2A DISCHARGE MOV (ORC) 5N109F05037#2 / G-6 ML012040470 2 2N102XCS0001B CONTAINMENT SPRAY PUMP 2B DISCHARGE MOV (ORC) 5N109F05037#2 / E-6 ML012040470 2 2N102XCS0001C CONTAINMENT SPRAY PUMP 2C DISCHARGE MOV (ORC) 5N109F05037#2 / C-6 ML012040470 2 2N102XCS0002 CONTAINMENT SPRAY PUMP 2A DISCHARGE CHECK VALVE (IRC) 5N109F05037#2 / G-7 ML012040470 2 2N102XCS0004 CONTAINMENT SPRAY HEADER IRC CHECK VALVE 5N109F05037#2 / E-8 ML012040470 2 2N102XCS0005 CONTAINMENT SPRAY HEADER IRC CHECK VALVE 5N109F05037#2 / D-8 ML012040470 2 2N102XCS0006 CONTAINMENT SPRAY PUMP 2C DISCHARGE CHECK VALVE (IRC) 5N109F05037#2 / C-7 ML012040470 2 2N122TSI0058 SAFETY INJECTION ACCUMULATORS IRC NITROGEN SUPPLY CHECK VALVE 5N129F05016#2 / G-2 ML012040470 2 2Q062TED0064 CONTAINMENT NORMAL SUMP SUMP PUMPS 2A & B DISCHARGE (IRC) ISOLATION MOV 5Q069F05030#2 / G-7 ML012040470 2 2Q102TSA0504 RCB SERVICE AIR HEADER ORC ISOLATION VALVE 5Q109F05041#2 / C-4 ML012040470 2 2Q102TSA0505 RCB SERVICE AIR HEADER IRC ISOLATION CHECK VALVE 5Q109F05041#2 / D-4 ML012040470 2 2Q112TIA0541 RCB INSTRUMENT AIR HEADER IRC CHECK VALVE 5Q119F05040#2 / D-4 ML012040470 2 2Q122TBA0004 (OCIV) BREATHING AIR TO RCB 5Q129F05044#2 / G-4 ML012040470 2 2Q122TBA0006 (IRC) BREATHING AIR ICIV CHECK VALVE 5Q129F05044#2 / H-4 ML012040470 2 2R142XRC0046 REACTOR MAKEUP WATER TO PRT 2A IRC INLET CHECK VALVE 5R149F05004#2 / E-4 ML012040470 2 2R162TRH0166 RCP SEAL STANDPIPE 2A SUPPLY CHECK VALVE 5R169F20000#2 / C-5 ML012040470 2 2R162TRH0167 RCP SEAL STANDPIPE 2B SUPPLY CHECK VALVE 5R169F20000#2 / F-5 ML012040470 2 2R162TRH0168 RCP SEAL STANDPIPE 2B SUPPLY CHECK VALVE 5R169F20000#2 / F-5 ML012040470 2 2R162TRH0169 RCP SEAL STANDPIPE 2C SUPPLY CHECK VALVE 5R169F20000#2 / H-5 ML012040470 2 2R162TRH0170 RCP SEAL STANDPIPE 2C SUPPLY CHECK VALVE 5R169F20000#2 / H-5 ML012040470 2 2R162TRH0171 RHR HEAT EXCHANGER 2A STANDPIPE FILL VALVE 5R169F20000#2 / C-5 ML012040470 2 2R162TRH0172 RHR HEAT EXCHANGER 2B STANDPIPE FILL VALVE 5R169F20000#2 / F-5 ML012040470 2 2R162TRH0173 RHR HEAT EXCHANGER 2C STANDPIPE FILL VALVE 5R169F20000#2 / H-5 ML012040470 2 2R162TRH0174 RCP SEAL STANDPIPE 2A SUPPLY CHECK VALVE 5R169F20000#2 / C-5 ML012040470 2 2R172TCV0022 CVCS LETDOWN IRC CONTAINMENT ISOLATION BYPASS CHECK VALVE 5R179F05005#2 / H-3 ML012040470 2 2R172TCV0077 RCP SEAL WATER RETURN IRC CONTAINMENT ISOLATION MOV 5R179F05005#2 / E-3 ML012040470 2 2R172TCV0078 RCP SEAL WATER IRC BYPASS CHECK VALVE 5R179F05005#2 / F-3 ML012040470 2 2R172TCV0079 RCP SEAL WATER RETURN ORC CONTAINMENT ISOLATION MOV 5R179F05005#2 / E-3 ML012040470 2 2R172TCV0154 BORON CONCENTRATION MEASUREMENT OUTLET TO VCT FIRST CHECK VALVE 5R179F05006#2 / D-2 ML012040470 2 2R172TCV0155 BORON CONCENTRATION MEASUREMENT OUTLET TO VCT SECOND CHECK VALVE 5R179F05006#2 / D-2 ML012040470 2 2R172TCV0166 CVCS RETURN FROM PRIMARY SAMPLE ISOLATION VALVE 5R179F05007#2 / G-5 ML012040470 2 2R172TCV0182 GAS SUPPLY HEADER TO VCT FIRST CHECK VALVE 5R179F05007#2 / G-7 ML012040470 2 2R172TCV0186 GAS SUPPLY HEADER TO VCT SECOND CHECK VALVE 5R179F05007#2 / F-7 ML012040470 2 2R172TCV0221 CVCS ALT IMMEDIATE BORATION ISOLATION VALVE 5R179F05007#2 / E-4 ML012040470 2 2R172TCV0226 BORIC ACID TANK TO CHARGING PUMP SUCTION BORATION VALVE 5R179F05007#2 / D-4 ML012040470 2 2R172TCV0234A CENTRIFUGAL CHARGING PUMP 2A RECIRC CHECK VALVE 5R179F05007#2 / B-6 ML012040470 2 2R172TCV0234B CENTRIFUGAL CHARGING PUMP 2B RECIRC CHECK VALVE 5R179F05007#2 / D-6 ML012040470 2 2R172TCV0677 POST ACCIDENT SAMPLING SYSTEM TO VCT CHECK VALVE 5R179F05007#2 / G-5 ML012040470 2 2R172TCV0707 CENTRIFUGAL CHARGING PUMP 2B DISCHARGE BYPASS CHECK VALVE 5R179F05007#2 / F-6 ML012040470 2 2R172XCV0023 CVCS LETDOWN IRC CONTAINMENT ISOLATION MOV 5R179F05005#2 / H-3 ML012040470 2 2R172XCV0024 CVCS LETDOWN ORC CONTAINMENT ISOLATION MOV 5R179F05005#2 / H-3 ML012040470 2 2R172XCV0112C CVCS CHARGING PUMPS SUCTION FROM RWST MOV 5R179F05007#2 / C-4 ML012040470 2 2R172XCV0113B CVCS CHARGING PUMPS SUCTION FROM RWST MOV 5R179F05007#2 / C-4 ML012040470 2 2R172XCV0157 CVCS LOW PRESSURE LETDOWN CONTAINMENT ISOLATION VALVE 5R179F05006#2 / F-2 ML012040470 2 2R172XCV0158 CVCS LOW PRESSURE LETDOWN IRC CONTAINMENT ISOLATION CHECK VALVE 5R179F05006#2 / F-2 ML012040470 2 2R172XCV0217 CVCS EMERGENCY BORATION CHECK VALVE 5R179F05007#2 / B-3 ML012040470 2 2R172XCV0218 CVCS EMERGENCY BORATION MOV 5R179F05007#2 / B-3 ML012040470 2 2R172XCV0224 CVCS CHARGING PUMPS SUCTION FROM RWST CHECK VALVE 5R179F05007#2 / B-4 ML012040470 2 2R172XCV0235A CENTRIFUGAL CHARGING PUMP 2A DISCHARGE CHECK VALVE 5R179F05007#2 / B-6 ML012040470 2 2R172XCV0235B CENTRIFUGAL CHARGING PUMP 2B DISCHARGE CHECK VALVE 5R179F05007#2 / D-6 ML012040470 2 2R172XCV0639 CVCS ALT IMMEDIATE BORATION CHECK VALVE 5R179F05007#2 / E-4 ML012040470 2 2R172XCV0671 CVCS SEAL INJECTION HEADER CHECK VALVE 5R179F05007#2 / B-6 ML012040470 2 2R172XCV8348 CENTRIFUGAL CHARGING PUMP 2A SEAL WATER SUPPLY MOV 5R179F05007#2 / B-6 ML012040470 2 2R172XCV8377A CENTRIFUGAL CHARGING PUMP 2A DISCHARGE MOV 5R179F05007#2 / B-6 ML012040470 2 2R172XCV8377B CENTRIFUGAL CHARGING PUMP 2B DISCHARGE MOV 5R179F05007#2 / D-6 ML012040470 2 2R202TCC0012 RHR TRAIN A CCW SUPPLY ORC ISOLATION MOV 5R209F05017#2 / E-2 ML012040470 2 2R202TCC0049 RHR TRAIN A CCW RETURN HEADER IRC ISOLATION MOV 5R209F05017#2 / G-4 ML012040470 2 2R202TCC0050 RHR TRAIN A CCW RETURN HEADER ORC ISOLATION MOV 5R209F05017#2 / G-4 ML012040470 2 2R202TCC0057 RCFC TRAIN A CCW SUPPLY ORC ISOLATION MOV 5R209F05017#2 / D-2 ML012040470 2 2R202TCC0058 RCFC TRAIN A CHILLED WATER/CCW SUPPLY IRC CHECK VALVE 5R209F05017#2 / D-2 ML012040470 2 2R202TCC0059 RCFC TRAIN A CHILLED WATER SUPPLY ORC ISOLATION MOV 5R209F05017#2 / D-2 ML012040470 2 2R202TCC0068 RCFC TRAIN A CHILLED WATER/CCW RETURN IRC ISOLATION MOV 5R209F05017#2 / C-4 ML012040470 2 2R202TCC0069 RCFC TRAIN A CCW RETURN ORC ISOLATION MOV 5R209F05017#2 / D-4 ML012040470 2 2R202TCC0070 RCFC TRAIN A CHILLED WATER RETURN ORC ISOLATION MOV 5R209F05017#2 / C-4 ML012040470 2 2R202TCC0122 RHR TRAIN B CCW SUPPLY ORC ISOLATION MOV 5R209F05018#2 / E-2 ML012040470 2 2R202TCC0129 RHR TRAIN B CCW RETURN HEADER IRC ISOLATION MOV 5R209F05018#2 / G-4 ML012040470 2 2R202TCC0130 RHR TRAIN B CCW RETURN HEADER ORC ISOLATION MOV 5R209F05018#2 / G-4 ML012040470 2 2R202TCC0136 RCFC TRAIN B CCW SUPPLY LINE ORC ISOLATION MOV 5R209F05018#2 / D-2 ML012040470 2 2R202TCC0137 RCFC TRAIN B CHILLED WATER SUPPLY LINE ORC ISOLATION MOV 5R209F05018#2 / D-2 ML012040470 2 2R202TCC0138 RCFC TRAIN B CHILLED WATER/CCW SUPPLY IRC CHECK VALVE 5R209F05018#2 / D-2 ML012040470 2 2R202TCC0147 RCFC TRAIN B CHILLED WATER/CCW RETURN IRC ISOLATION MOV 5R209F05018#2 / C-4 ML012040470 2 2R202TCC0148 RCFC TRAIN B CCW RETURN LINE ORC ISOLATION MOV 5R209F05018#2 / D-4 ML012040470 2 2R202TCC0149 RCFC TRAIN B CHILLED WATER RETURN ISOLATION MOV 5R209F05018#2 / C-4 ML012040470 2 2R202TCC0182 RHR TRAIN C CCW SUPPLY ORC ISOLATION MOV 5R209F05019#2 / F-1 ML012040470 2 2R202TCC0189 RHR TRAIN C CCW RETURN IRC ISOLATION MOV 5R209F05019#2 / H-4 ML012040470 2 2R202TCC0190 RHR TRAIN C CCW RETURN ORC ISOLATION MOV 5R209F05019#2 / H-4 ML012040470 2 2R202TCC0197 RCFC TRAIN C CCW SUPPLY ORC ISOLATION MOV 5R209F05019#2 / D-2 ML012040470 2 2R202TCC0198 RCFC TRAIN C CHILLED WATER/CCW SUPPLY IRC CHECK VALVE 5R209F05019#2 / D-2 ML012040470 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 86 of 136 ATTACHMENT 9: Unit 2 ML012040470 Exempt Valve List Valve ID Component Description Drawing / Category Class Coordinate 2R202TCC0199 RCFC TRAIN C CHILLED WATER SUPPLY ORC ISOLATION MOV 5R209F05019#2 / D-2 ML012040470 2 2R202TCC0208 RCFC TRAIN C CHILLED WATER/CCW RETURN IRC ISOLATION MOV 5R209F05019#2 / D-4 ML012040470 2 2R202TCC0209 RCFC TRAIN C CHILLED WATER RETURN LINE ORC ISOLATION MOV 5R209F05019#2 / C-4 ML012040470 2 2R202TCC0210 RCFC TRAIN C CCW RETURN LINE ORC ISOLATION MOV 5R209F05019#2 / D-4 ML012040470 2 2R202TCC0291 REACTOR COOLANT PUMPS CCW SUPPLY ORC ISOLATION MOV 5R209F05021#2 / H-8 ML012040470 2 2R202TCC0318 REACTOR COOLANT PUMPS CCW SUPPLY ORC ISOLATION MOV 5R209F05021#2 / H-8 ML012040470 2 2R202TCC0319 REACTOR COOLANT PUMPS CCW SUPPLY IRC CHECK VALVE 5R209F05021#2 / G-8 ML012040470 2 2R202TCC0403 RCP AND HEAT EXCHANGERS CCW RETURN HEADER IRC ISOLATION MOV 5R209F05021#2 / B-1 ML012040470 2 2R202TCC0404 RCP AND HEAT EXCHANGERS CCW RETURN ORC ISOLATION MOV 5R209F05021#2 / H-1 ML012040470 2 2R202TCC0446 RCP AND HEAT EXCHANGERS CCW RETURN HEADER MOV-0542/0403 IRC BYPASS CHECK 5R209F05021#2 / B-1 ML012040470 2 VALVE 2R202TCC0542 RCP AND HEAT EXCHANGERS CCW RETURN HEADER BYPASS IRC ISOLATION MOV 5R209F05021#2 / B-1 ML012040470 2 2R212XFC0006C SFP COOLING PUMPS 2A&B SUCTION FROM ICSA IRC ISOLATION VALVE 5R219F05028#2 / B-5 ML012040470 2 2R212XFC0007C SFP COOLING PUMPS 2A&B SUCTION FROM ICSA ORC ISOLATION VALVE 5R219F05028#2 / B-4 ML012040470 2 2R212XFC0013E SFP COOLING & PURIFICATION DISCHARGE TO RX CAVITY OR ICSA ORC ISOLATION VALVE 5R219F05028#2 / B-6 ML012040470 2 2R212XFC0013F SFP COOLING & PURIFICATION DISCHARGE TO ICSA IRC ISOLATION VALVE 5R219F05028#2 / B-6 ML012040470 2 2R212XFC0050 SFP COOLING & PURIFICATION TO RX CAVITY IRC ISOLATION VALVE 5R219F05028#2 / B-6 ML012040470 2 2R302TWL0312 RCDT HEAT EXCHANGER OUTLET LINE ISOLATION MOV (IRC) 5R309F05022#2 / E-3 ML012040470 2 2R342TRD0008 RCS VACUUM DEGASSING IRC ISOLATION VALVE 5R349F05046#1 / E-7 ML012040470 2 2R342TRD0010 RCS VACUUM DEGASSING ORC ISOLATION VALVE 5R349F05046#1 / E-7 ML012040470 2 2R372TPO0217 RCP OIL RETURN LINE IRC ISOLATION VALVE 5R379F05042#2 / B-4 ML012040470 2 2R372TPO0218 RCP OIL RETURN LINE ORC ISOLATION VALVE 5R379F05042#2 / B-3 ML012040470 2 2S192TDW0501 DEMIN WATER HEADER TO REACTOR CONTAINMENT BUILDING ISOLATION VALVE 5S199F05034#2 / F-3 ML012040470 2 2S192TDW0502 REACTOR CONTAINMENT BUILDING DEMIN WATER SUPPLY HEADER CHECK VALVE 5S199F05034#2 / F-3 ML012040470 2 2S202TSL0002 HIGH PRESSURE SLUDGE LANCING ORC ISOLATION VALVE 5S209F05057#2 / B-5 ML012040470 2 2S202TSL0004 HIGH PRESSURE SLUDGE LANCING IRC ISOLATION VALVE 5S209F05057#2 / B-6 ML012040470 2 2S202TSL0012 LOW PRESSURE SLUDGE LANCING ORC ISOLATION VALVE 5S209F05057#2 / D-5 ML012040470 2 2S202TSL0014 LOW PRESSURE SLUDGE LANCING IRC ISOLATION VALVE 5S209F05057#2 / D-6 ML012040470 2 2S202TSL0027 SLUDGE LANCING CHEMICAL CLEANING WATER RETURN IRC ISOLATION VALVE 5S209F05057#2 / F-6 ML012040470 2 2S202TSL0029 SLUDGE LANCING CHEMICAL CLEANING WATER RETURN ORC ISOLATION VALVE 5S209F05057#2 / F-5 ML012040470 2 2V142TRA0001 RCB EXHAUST RT-8011 SUPPLY IRC ISOLATION MOV 5V149V00017#2 / G-4 ML012040470 2 2V142TRA0003 RCB EXHAUST RT-8011 RETURN IRC ISOLATION MOV 5V149V00017#2 / F-4 ML012040470 2 2V142TRA0004 RCB EXHAUST RT-8011 SUPPLY ORC ISOLATION MOV 5V149V00017#2 / G-4 ML012040470 2 2V142TRA0006 RCB EXHAUST RT-8011 RETURN ORC ISOLATION MOV 5V149V00017#2 / F-3 ML012040470 2 3Q152TDO0129 FUEL OIL STORAGE TANK EMERGENCY FILL CHECK VALVE 5Q159F00045#2 / H-7 ML012040470 3 3Q152TDO0130 FUEL OIL STORAGE TANK EMERGENCY FILL VALVE 5Q159F00045#2 / H-7 ML012040470 3 3Q152TDO0131 FUEL OIL STORAGE TANK EMERGENCY FILL CHECK VALVE 5Q159F00045#2 / H-5 ML012040470 3 3Q152TDO0132 FUEL OIL STORAGE TANK EMERGENCY FILL VALVE 5Q159F00045#2 / H-5 ML012040470 3 3Q152TDO0133 FUEL OIL STORAGE TANK EMERGENCY FILL CHECK VALVE 5Q159F00045#2 / H-2 ML012040470 3 3Q152TDO0134 FUEL OIL STORAGE TANK EMERGENCY FILL VALVE 5Q159F00045#2 / H-2 ML012040470 3 3R172TCV0220 CVCS NORMAL BORATION CHECK VALVE 5R179F05007#2 / D-2 ML012040470 3 3R172TCV0333 BA TANK 2A TO SUCTION OF CHARGING PUMPS ISOLATION VALVE 5R179F05009#2 / D-4 ML012040470 3 3R172TCV0335A BA BATCHING TANK 2A TO BA TRANSFER PUMP 2A ISOLATION VALVE 5R179F05009#2 / D-4 ML012040470 3 3R172TCV0335B BA BATCHING TANK 2A TO BA TRANSFER PUMP 2B ISOLATION VALVE 5R179F05009#2 / D-4 ML012040470 3 3R172TCV0346 BORIC ACID TRANSFER PUMP 2B RECIRC CHECK VALVE 5R179F05009#2 / D-5 ML012040470 3 3R172TCV0351 BORIC ACID TRANSFER PUMP 2A RECIRC CHECK VALVE 5R179F05009#2 / E-6 ML012040470 3 3R172TCV0352A BORIC ACID FILTER BYPASS VALVE 5R179F05009#2 / D-7 ML012040470 3 3R172TCV0352B BORIC ACID FILTER BYPASS VALVE 5R179F05009#2 / D-6 ML012040470 3 3R172TCV0635 BORIC ACID TANK 2B PURIFIED BORIC ACID FIRST CHECK VALVE 5R179F05009#2 / E-5 ML012040470 3 3R172TCV0636 BORIC ACID TANK 2B PURIFIED BORIC ACID SECOND CHECK VALVE 5R179F05009#2 / E-5 ML012040470 3 3R172TCV0637 BORIC ACID TANK 2A PURIFIED BORIC ACID FIRST CHECK VALVE 5R179F05009#2 / F-5 ML012040470 3 3R172TCV0638 BORIC ACID TANK 2A PURIFIED BORIC ACID SECOND CHECK VALVE 5R179F05009#2 / F-6 ML012040470 3 3R172XCV0204 CVCS REACTOR MAKE-UP WATER CHECK VALVE 5R179F05007#2 / F-2 ML012040470 3 3R172XCV0334 BORIC ACID TANK 2A CHARGING PUMP SUCTION CHECK VALVE 5R179F05009#2 / E-4 ML012040470 3 3R172XCV0338 BORIC ACID TRANSFER PUMP 2A DISCHARGE CHECK VALVE 5R179F05009#2 / D-6 ML012040470 3 3R172XCV0349 BORIC ACID TRANSFER PUMP 2B DISCHARGE CHECK VALVE 5R179F05009#2 / C-6 ML012040470 3 3R202TCC0032 SPENT FUEL POOL HXS CCW SUPPLY HEADER SECOND ISOLATION MOV 5R209F05020#2 / E-6 ML012040470 3 3R202TCC0231 CCW SURGE TANK 2A REACTOR MAKEUP WATER SUPPLY VALVE 5R209F05017#2 / G-6 ML012040470 3 3R202TCC0235 CCW COMMON SUPPLY HEADER FIRST ISOLATION MOV 5R209F05020#2 / D-7 ML012040470 3 3R202TCC0236 CCW COMMON SUPPLY HEADER SECOND ISOLATION MOV 5R209F05020#2 / D-6 ML012040470 3 3R202TCC0297 RCDT & EXCESS LETDOWN HXS CCW SUPPLY MOV 5R209F05021#2 / G-7 ML012040470 3 3R202TCC0321 RCP 2C THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#2 / E-5 ML012040470 3 3R202TCC0327 RCP 2A THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#2 / B-8 ML012040470 3 3R202TCC0346 RCP 2D THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#2 / E-8 ML012040470 3 3R202TCC0363 RCP 2B THERMAL BARRIER CCW SUPPLY FIRST CHECK VALVE 5R209F05021#2 / B-5 ML012040470 3 3R202TCC0392 RCDT HEAT EXCHANGER 2A CCW SUPPLY MOV 5R209F05021#2 / G-3 ML012040470 3 3R202TCC0393 EXCESS LETDOWN HEAT EXCHANGER 2A CCW SUPPLY MOV 5R209F05021#2 / G-3 ML012040470 3 3R202TCC0402 EXCESS LETDOWN HEAT EXCHANGER 2A CCW RETURN SECOND CHECK VALVE 5R209F05021#2 / C-2 ML012040470 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 87 of 136 ATTACHMENT 9: Unit 2 ML012040470 Exempt Valve List Valve ID Component Description Drawing / Category Class Coordinate 3R202TCC0447 SPENT FUEL POOL HXS CCW SUPPLY HEADER FIRST ISOLATION MOV 5R209F05020#2 / E-7 ML012040470 3 3R202TCC0540 RCDT HEAT EXCHANGER 2A CCW RETURN FIRST CHECK VALVE 5R209F05021#2 / D-1 ML012040470 3 3R202TCC0541 RCDT HEAT EXCHANGER 2A CCW RETURN SECOND CHECK VALVE 5R209F05021#2 / D-1 ML012040470 3 3R202TCC0756 RCP 2C THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#2 / E-4 ML012040470 3 3R202TCC0757 RCP 2B THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#2 / B-5 ML012040470 3 3R202TCC0758 RCP 2D THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#2 / E-7 ML012040470 3 3R202TCC0759 RCP 2A THERMAL BARRIER CCW SUPPLY SECOND CHECK VALVE 5R209F05021#2 / B-8 ML012040470 3 3R202TCC0763 EXCESS LETDOWN HEAT EXCHANGER 2A CCW RETURN FIRST CHECK VALVE 5R209F05021#2 / C-2 ML012040470 3 3R202TCC0768 CHARGING PUMP COOLERS CCW TRAIN A SUPPLY ISOLATION MOV 5R209F05020#2 / F-7 ML012040470 3 3R202TCC0770 CHARGING PUMP COOLERS CCW TRAIN B SUPPLY ISOLATION MOV 5R209F05020#2 / G-7 ML012040470 3 3R202TCC0771 CHARGING PUMP COOLERS CCW TRAIN C SUPPLY ISOLATION MOV 5R209F05020#2 / G-7 ML012040470 3 3R202TCC0772 CHARGING PUMP COOLERS CCW TRAIN A RETURN ISOLATION MOV 5R209F05020#2 / B-7 ML012040470 3 3R202TCC0774 CHARGING PUMP COOLERS CCW TRAIN B RETURN ISOLATION MOV 5R209F05020#2 / B-7 ML012040470 3 3R202TCC0775 CHARGING PUMP COOLERS CCW TRAIN C RETURN ISOLATION MOV 5R209F05020#2 / A-7 ML012040470 3 3R272TRM0003 RMW PUMP 2A DISCHARGE CHECK VALVE 5R279F05033#2 / F-5 ML012040470 3 3R272TRM0007 RMWST DEMIN WATER SUPPLY CHECK VALVE 5R279F05033#2 / G-2 ML012040470 3 3R272TRM0010 RMW PUMP 2B DISCHARGE CHECK VALVE 5R279F05033#2 / E-6 ML012040470 3 3R272TRM0013 RMWST BRS & WL SYSTEMS RETURN CHECK VALVE 5R279F05033#2 / G-6 ML012040470 3 3R272TRM0048 REACTOR MAKE-UP WATER TO CCW SURGE TANK CHECK VALVE 5R279F05033#2 / E-8 ML012040470 3 3R272TRM0103 RMW PUMP 2B RECIRC LINE CHECK VALVE 5R279F05033#2 / F-6 ML012040470 3 3R272TRM0104 RMW PUMP 2A RECIRC LINE CHECK VALVE 5R279F05033#2 / F-6 ML012040470 3 3R282TEW0188 ECW PUMP 2A DISCHARGE STRAINER BACKFLUSH THROTTLE VALVE 5R289F05038SH1#2 / C-2 ML012040470 3 3R282TEW0189 ECW PUMP 2B DISCHARGE STRAINER BACKFLUSH THROTTLE VALVE 5R289F05038SH2#2 / C-2 ML012040470 3 3R282TEW0190 ECW PUMP 2C DISCHARGE STRAINER BACKFLUSH THROTTLE VALVE 5R289F05038SH3#2 / C-2 ML012040470 3 3R282TEW0253 ECW SCREEN WASH BOOSTER PUMP 2A DISCHARGE CHECK VALVE 5R289F05039#2 / D-7 ML012040470 3 3R282TEW0254 ECW SCREEN WASH BOOSTER PUMP 2B DISCHARGE CHECK VALVE 5R289F05039#2 / D-5 ML012040470 3 3R282TEW0255 ECW SCREEN WASH BOOSTER PUMP 2C DISCHARGE CHECK VALVE 5R289F05039#2 / D-2 ML012040470 3 3R282TEW0277 ECW PUMP 2A DISCHARGE STRAINER EMERGENCY BACKFLUSH VALVE 5R289F05038SH1#2 / C-2 ML012040470 3 3R282TEW0278 ECW PUMP 2B DISCHARGE STRAINER EMERGENCY BACKFLUSH VALVE 5R289F05038SH2#2 / C-2 ML012040470 3 3R282TEW0279 ECW PUMP 2C DISCHARGE STRAINER EMERGENCY BACKFLUSH VALVE 5R289F05038SH3#2 / C-2 ML012040470 3 3R282TEW0370A ECW PUMP 2A DISCHARGE VENT LINE CHECK VALVE 5R289F05038SH1#2 / C-3 ML012040470 3 3R282TEW0370B ECW PUMP 2B DISCHARGE VENT LINE CHECK VALVE 5R289F05038SH2#2 / C-3 ML012040470 3 3R282TEW0370C ECW PUMP 2C DISCHARGE VENT LINE CHECK VALVE 5R289F05038SH3#2 / C-3 ML012040470 3 3R282TEW0403 ECW PUMP 2A DISCHARGE STRAINER EMERGENCY BACKFLUSH CHECK VALVE 5R289F05038SH1#2 / C-3 ML012040470 3 3R282TEW0404 ECW PUMP 2B DISCHARGE STRAINER EMERGENCY BACKFLUSH CHECK VALVE 5R289F05038SH2#2 / C-3 ML012040470 3 3R282TEW0405 ECW PUMP 2C DISCHARGE STRAINER EMERGENCY BACKFLUSH CHECK VALVE 5R289F05038SH3#2 / C-3 ML012040470 3 3R282TEW1007 DIESEL GENERATOR #21 ECW VACUUM BREAKER CHECK VALVE 5R289F05038SH1#2 / F-1 ML012040470 3 3R282TEW1011 DIESEL GENERATOR #22 ECW VACUUM BREAKER CHECK VALVE 5R289F05038SH2#2 / F-1 ML012040470 3 3R282TEW1015 DIESEL GENERATOR #23 ECW VACUUM BREAKER CHECK VALVE 5R289F05038SH3#2 / F-1 ML012040470 3 3R282TEW1024 CCW HEAT EXCHANGER 2A VACUUM BREAKER CHECK VALVE 5R289F05038SH1#2 / E-7 ML012040470 3 3R282TEW1026 CCW HEAT EXCHANGER 2B VACUUM BREAKER CHECK VALVE 5R289F05038SH2#2 / E-7 ML012040470 3 3R282TEW1028 CCW HEAT EXCHANGER 2C VACUUM BREAKER CHECK VALVE 5R289F05038SH3#2 / E-7 ML012040470 3 A2APFV2453 (OCIV) RCB SUMP OUT TO PASS (AP-FV-2453) 5Z549Z47501#2 / G-7 ML012040470 2 A2APFV2454 (OCIV) RHR SAMPLE OUT TO PASS (AP-FV-2454) 5Z549Z47501#2 / F-7 ML012040470 2 A2CCFV0864 RCFC TRAIN C CHILLED WATER RETURN ORC FLOW CONTROL VALVE 5R209F05019#2 / C-4 ML012040470 2 A2CCFV4540 POST ACCIDENT SAMPLING SYSTEM CCW SUPPLY FIRST ISOLATION SOLENOID VALVE 5R209F05020#2 / D-7 ML012040470 3 A2CCFV4656 CHARGING PUMPS CCW SUPPLY HEADER CROSS-TIE FLOW CONTROL VALVE 5R209F05020#2 / G-7 ML012040470 3 A2CCFV4657 CHARGING PUMPS CCW RETURN HEADER CROSS-TIE FLOW CONTROL VALVE 5R209F05020#2 / A-7 ML012040470 3 A2CHTV9476A TRAIN A ESSENTIAL CHILLED WATER CONTROL ROOM AHU 21A TEMPERATURE CONTROL 3V119V10002#2 / F-7 ML012040470 3 VALVE A2CHTV9476B TRAIN A ESSENTIAL CHILLED WATER CONTROL ROOM AHU 21A OUTLET TEMPERATURE 3V119V10002#2 / E-7 ML012040470 3 CONTROL VALVE A2CMFV4100 SAMPLE POINT #1 FLOW ISOLATION VALVE 5Z169Z00046#2 / G-6 ML012040470 2 A2CMFV4101 CONTAINMENT HYDROGEN MONITORING TO PAM-I FLOW ISOLATION VALVE 5Z169Z00046#2 / F-4 ML012040470 2 A2CMFV4124 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #3 FLOW ISOLATION VALVE 5Z169Z00046#2 / F-6 ML012040470 2 A2CMFV4125 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #5 FLOW ISOLATION VALVE 5Z169Z00046#2 / F-6 ML012040470 2 A2CMFV4126 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #6 FLOW ISOLATION VALVE 5Z169Z00046#2 / E-6 ML012040470 2 A2CMFV4127 CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-I FLOW ISOLATION 5Z169Z00046#2 / E-4 ML012040470 2 VALVE A2CMFV4128 CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-I FLOW ISOLATION 5Z169Z00046#2 / E-5 ML012040470 2 VALVE A2CMFV4135 CONTAINMENT HYDROGEN MONITORING SAMPLE INLET TO PAM-I FLOW ISOLATION VALVE 5Z169Z00046#2 / F-5 ML012040470 2 A2CVFV8400A CONCENTRATED BA POLISHING DEMIN INLET FLOW CONTROL VALVE 5R179F05009#2 / D-8 ML012040470 2 A2CVHCV0206 CENTRIFUGAL CHARGING PUMP 2B DISCHARGE BYPASS FLOW CONTROL VALVE 5R179F05007#2 / D-6 ML012040470 2 A2EDFV7800 CONTAINMENT NORMAL SUMP SUMP PUMP DISCHARGE (ORC) FLOW CONTROL VALVE 5Q069F05030#2 / G-6 ML012040470 2 A2EWFV6914 ECW SCREEN WASH PUMP 2A DISCHARGE VALVE 5R289F05039#2 / D-7 ML012040470 3 A2EWFV6935 ECW RETURN HEADER BLOWDOWN VALVE 5R289F05038SH1#2 / E-5 ML012040470 3 A2RCFV3653 PRESSURIZER RELIEF TANK VENT IRC CONTAINMENT ISOLATION VALVE 5R149F05004#2 / F-4 ML012040470 2 A2SBFV4186 STEAM GENERATOR 2D SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#2 / D-5 ML012040470 2 A2SBFV4189 STEAM GENERATOR 2A SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#2 / H-5 ML012040470 2 A2SIFV3936 RWST OUTLET TO REFUELING WATER PURIF PUMP FIRST ISOLATION VALVE 5N129F05013#2 / F-2 ML012040470 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 88 of 136 ATTACHMENT 9: Unit 2 ML012040470 Exempt Valve List Valve ID Component Description Drawing / Category Class Coordinate A2SIFV3971 SIS CHECK VALVE TEST LINE ORC ISOLATION VALVE 5N129F05016#2 / F-7 ML012040470 2 A2SIFV3983 SAFETY INJECTION ACCUMULATORS ORC NITROGEN SUPPLY VALVE 5N129F05016#2 / G-2 ML012040470 2 A2SIHCV0900 (IRC) SI ACCUM VENT HDR BLOCK VLV (SI-HCV-0900) 5N129F05016#2 / G-2 ML012040470 2 A2SIPV3928 SAFETY INJECTION ACCUMULATOR 2C NITROGEN SUPPLY VENT VALVE 5N129F05016#2 / C-4 ML012040470 2 A2WLFV4920 REACTOR COOLANT DRAIN TANK VENT TO GASEOUS WASTE PROCESSING IRC ISOLATION 5R309F05022#2 / G-6 ML012040470 2 VALVE B2APFV2455 (OCIV) RCS SAMPLE TO PASS LAB (AP-FV-2455) 5Z549Z47501#2 / E-7 ML012040470 2 B2APFV2455A (OCIV) RCS SAMPLE TO PASS LAB (AP-FV-2455A) 5Z549Z47501#2 / E-7 ML012040470 2 B2CCFV0862 RCFC TRAIN A CHILLED WATER RETURN ORC FLOW CONTROL VALVE 5R209F05017#2 / B-4 ML012040470 2 B2CCFV4541 POST ACCIDENT SAMPLING SYSTEM CCW SUPPLY SECOND ISOLATION SOLENOID VALVE 5R209F05020#2 / D-8 ML012040470 3 B2CHTV9486A TRAIN B ESSENTIAL CHILLED WATER CONTROL ROOM AHU 21B OUTLET TEMPERATURE 3V119V10002#2 / F-4 ML012040470 3 CONTROL VALVE B2CHTV9486B TRAIN B ESSENTIAL CHILLED WATER CONTROL ROOM AHU 21B BYPASS TEMPERATURE 3V119V10002#2 / E-4 ML012040470 3 CONTROL VALVE B2CVFV8400B CONCENTRATED BA POLISHING DEMIN INLET FLOW CONTROL VALVE 5R179F05009#2 / C-8 ML012040470 3 B2EWFV6924 ECW SCREEN WASH PUMP 2B DISCHARGE VALVE 5R289F05039#2 / D-5 ML012040470 3 B2EWFV6936 ECW RETURN HEADER BLOWDOWN VALVE 5R289F05038SH2#2 / E-5 ML012040470 3 B2IAFV8565 INSTRUMENT AIR SUPPLY TO REACTOR CONTAINMENT BUILDING ORC ISOLATION VALVE 5Q119F05040#2 / D-4 ML012040470 2 B2PSFV4450 PRESSURIZER VAPOR SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / H-8 ML012040470 2 B2PSFV4451 PRESSURIZER LIQUID SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / G-8 ML012040470 2 B2PSFV4456 RCS HOT LEG SAMPLE HEADER ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / F-7 ML012040470 2 B2PSFV4466 SI ACCUMULATORS SAMPLE HEADER ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / B-7 ML012040470 2 B2PSFV4823 RHR SAMPLE HEADER IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / D-8 ML012040470 2 B2RCFV3651 PRESSURIZER RELIEF TANK SPRAY REACTOR MAKEUP WATER SUPPLY CONTAINMENT 5R149F05004#2 / E-2 ML012040470 2 ISOLATION VALVE B2RCFV3652 PRESSURIZER RELIEF TANK VENT ORC CONTAINMENT ISOLATION VALVE 5R149F05004#2 / F-4 ML012040470 2 B2RMFV7663 RMW TO CVCS SUPPLY HEADER FLOW CONTROL VALVE 5R279F05033#2 / F-7 ML012040470 3 B2SBFV4188 STEAM GENERATOR 2B SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#2 / H-1 ML012040470 2 B2SIFV3937 RWST OUTLET TO REFUELING WATER PURIF PUMP SECOND ISOLATION VALVE 5N129F05013#2 / F-2 ML012040470 2 B2SIFV3970 SIS CHECK VALVE TEST LINE IRC ISOLATION VALVE 5N129F05016#2 / F-7 ML012040470 2 B2SIHV0899 SAFETY INJECTION ACCUMULATOR 2C NITROGEN SUPPLY VENT VALVE 5N129F05016#2 / F-2 ML012040470 2 B2SIPV3930 SAFETY INJECTION ACCUMULATOR 2A NITROGEN SUPPLY VENT VALVE 5N129F05016#2 / G-4 ML012040470 2 B2WLFV4913 RCDT HEAT EXCHANGER OUTLET ISOLATION VALVE (ORC) 5R309F05022#2 / F-3 ML012040470 2 B2WLFV4919 REACTOR COOLANT DRAIN TANK VENT TO GASEOUS WASTE PROCESSING ORC ISOLATION 5R309F05022#2 / G-5 ML012040470 2 VALVE C2APFV2456 CONTAINMENT AIR SAMPLE ORC ISOL VALVE 5Z549Z47501#2 / D-7 ML012040470 2 C2APFV2457 PASS OCIV (RCB AIR RETURN) (AP-FV-2457) 5Z549Z47501#2 / H-2 ML012040470 2 C2APFV2458 PASS OCIV (WCU BACK TO THE PRT) (AP-FV-2458) 5Z549Z47501#2 / C-3 ML012040470 2 C2CCFV0863 RCFC TRAIN B CHILLED WATER RETURN ORC FLOW CONTROL VALVE 5R209F05018#2 / C-4 ML012040470 2 C2CHTV9496A TRAIN C ESSENTIAL CHILLED WATER CONTROL ROOM AHU 21C OUTLET TEMPERATURE 3V119V10002#2 / F-1 ML012040470 3 CONTROL VALVE C2CHTV9496B TRAIN C ESSENTIAL CHILLED WATER CONTROL ROOM AHU 21C BYPASS TEMPERATURE 3V119V10002#2 / E-1 ML012040470 3 CONTROL VALVE C2CMFV4103 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #2 FLOW ISOLATION VALVE 5Z169Z00046#2 / E-6 ML012040470 2 C2CMFV4104 CONTAINMENT HYDROGEN MONITORING TO PAM-II FLOW ISOLATION VALVE 5Z169Z00046#2 / D-4 ML012040470 2 C2CMFV4129 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #4 FLOW ISOLATION VALVE 5Z169Z00046#2 / D-6 ML012040470 2 C2CMFV4130 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #7 FLOW ISOLATION VALVE 5Z169Z00046#2 / D-6 ML012040470 2 C2CMFV4131 CONTAINMENT HYDROGEN MONITORING SAMPLE POINT #8 FLOW ISOLATION VALVE 5Z169Z00046#2 / C-6 ML012040470 2 C2CMFV4133 CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-II FLOW ISOLATION 5Z169Z00046#2 / C-4 ML012040470 2 VALVE C2CMFV4134 CONTAINMENT HYDROGEN MONITORING SAMPLE RETURN FROM PAM-II FLOW ISOLATION 5Z169Z00046#2 / C-5 ML012040470 2 VALVE C2CMFV4136 CONTAINMENT HYDROGEN MONITORING SAMPLE INLET TO PAM-II FLOW ISOLATION VALVE 5Z169Z00046#2 / D-5 ML012040470 2 C2CVHCV0218 CVCS SEAL WATER INJECTION FLOW CONTROL VALVE 5R179F05007#2 / B-7 ML012040470 2 C2EWFV6934 ECW SCREEN WASH PUMP 2C DISCHARGE VALVE 5R289F05039#2 / D-3 ML012040470 3 C2EWFV6937 ECW RETURN HEADER BLOWDOWN VALVE 5R289F05038SH3#2 / E-5 ML012040470 3 C2PSFV4451B PRESSURIZER LIQUID SAMPLE LINE ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / F-7 ML012040470 2 C2PSFV4452 PRESSURIZER VAPOR SAMPLE LINE ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / G-7 ML012040470 2 C2PSFV4454 RCS HOT LEG 2A SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / F-8 ML012040470 2 C2PSFV4455 RCS HOT LEG 2C SAMPLE LINE IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / E-8 ML012040470 2 C2PSFV4461 RHR SAMPLE HEADER ORC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / D-7 ML012040470 2 C2PSFV4824 SI ACCUMULATOR SAMPLE HEADER IRC CONTAINMENT ISOLATION VALVE 5Z329Z00045#2 / B-8 ML012040470 2 C2RMFV7659 RMW TO CVCS SUPPLY HEADER FLOW CONTROL VALVE 5R279F05033#2 / F-7 ML012040470 3 C2SBFV4187 STEAM GENERATOR 2C SAMPLE LINE ORC FLOW CONTROL VALVE 5S209F20001#2 / D-1 ML012040470 2 C2SIPV3929 SAFETY INJECTION ACCUMULATOR 2B NITROGEN SUPPLY VENT VALVE 5N129F05016#2 / E-4 ML012040470 2 D2AFFV0143 TERRY TURBINE WARM-UP VALVE 5S142F00024#2 / G-8 ML012040470 3 D2CCFV4493 RCP AND HEAT EXCHANGERS CCW RETURN ORC FLOW CONTROL VALVE 5R209F05021#2 / H-1 ML012040470 2 N2CCPSV4492 CCW NNS OUTLET HEADER RELIEF VALVE 5R209F05020#2 / B-6 ML012040470 3 N2CCPSV4511 CCW HX 2A OUTLET RELIEF VALVE 5R209F05017#2 / B-5 ML012040470 3 N2CCPSV4516 CCW HX 2B OUTLET RELIEF VALVE 5R209F05018#2 / B-6 ML012040470 3 N2CCPSV4521 CCW HX 2C OUTLET RELIEF VALVE 5R209F05019#2 / B-6 ML012040470 3 N2CCPSV4532 RHR HX 2A OUTLET RELIEF VALVE 5R209F05017#2 / G-3 ML012040470 3 N2CCPSV4533 RHR PUMP 2A OUTLET RELIEF VALVE 5R209F05017#2 / G-4 ML012040470 3 N2CCPSV4537 RCFC COOLING COIL 21A OUTLET RELIEF VALVE 5R209F05017#2 / E-4 ML012040470 3 N2CCPSV4539 RCFC COOLING COIL 22A OUTLET RELIEF VALVE 5R209F05017#2 / C-4 ML012040470 3 N2CCPSV4549 RHR HX 2B OUTLET RELIEF VALVE 5R209F05018#2 / G-2 ML012040470 3

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 89 of 136 ATTACHMENT 9: Unit 2 ML012040470 Exempt Valve List Valve ID Component Description Drawing / Category Class Coordinate N2CCPSV4550 RHR PUMP 2B OUTLET RELIEF VALVE 5R209F05018#2 / G-3 ML012040470 3 N2CCPSV4554 RCFC COOLING COIL 21B OUTLET RELIEF VALVE 5R209F05018#2 / E-4 ML012040470 3 N2CCPSV4556 RCFC COOLING COIL 22B OUTLET RELIEF VALVE 5R209F05018#2 / C-4 ML012040470 3 N2CCPSV4566 RHR HX 2C OUTLET RELIEF VALVE 5R209F05019#2 / G-2 ML012040470 3 N2CCPSV4567 RHR PUMP 2C OUTLET RELIEF VALVE 5R209F05019#2 / G-3 ML012040470 3 N2CCPSV4571 RCFC COOLING COIL 21C OUTLET RELIEF VALVE 5R209F05019#2 / E-4 ML012040470 3 N2CCPSV4573 RCFC COOLING COIL 22C OUTLET RELIEF VALVE 5R209F05019#2 / C-3 ML012040470 3 N2CCPSV4580 CCP 2B LUBE OIL COOLER OUTLET RELIEF VALVE 5R209F05020#2 / G-6 ML012040470 3 N2CCPSV4582 CCP 2A LUBE OIL COOLER OUTLET RELIEF VALVE 5R209F05020#2 / G-4 ML012040470 3 N2CCPSV4584 PDP SUPPLEMENTARY COOLER AHU OUTLET RELIEF VALVE 5R209F05020#2 / G-5 ML012040470 3 N2CCPSV4586 CCP SUPPLEMENTARY COOLER AHU 21A OUTLET RELIEF VALVE 5R209F05020#2 / G-3 ML012040470 3 N2CCPSV4588 CCP SUPPLEMENTARY COOLER AHU 21B OUTLET RELIEF VALVE 5R209F05020#2 / G-5 ML012040470 3 N2CCPSV4613 SEAL WATER HX 2A OUTLET RELIEF VALVE 5R209F05020#2 / E-2 ML012040470 3 N2CCPSV4616 RCP 2A UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / C-6 ML012040470 3 N2CCPSV4618 RCP 2A LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / B-6 ML012040470 3 N2CCPSV4620 RCP 2A THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#2 / A-6 ML012040470 3 N2CCPSV4622 RCP 2B UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / C-3 ML012040470 3 N2CCPSV4624 RCP 2B LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / B-3 ML012040470 3 N2CCPSV4626 RCP 2B THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#2 / A-3 ML012040470 3 N2CCPSV4628 RCP 2C UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / F-3 ML012040470 3 N2CCPSV4630 RCP 2C LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / E-3 ML012040470 3 N2CCPSV4632 RCP 2C THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#2 / D-3 ML012040470 3 N2CCPSV4634 RCP 2D UPPER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / F-6 ML012040470 3 N2CCPSV4636 RCP 2D LOWER BEARING OIL COOLER OUTLET RELIEF VALVE 5R209F05021#2 / E-6 ML012040470 3 N2CCPSV4638 RCP 2D THERMAL BARRIER OUTLET RELIEF VALVE 5R209F05021#2 / D-6 ML012040470 3 N2CCPSV4639 RCB CCW RETURN HEADER RELIEF VALVE 5R209F05021#2 / C-2 ML012040470 3 N2CCPSV4645 RCP 2) MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#2 / C-7 ML012040470 3 N2CCPSV4645A RCP 2A MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALV 5R209F05021#2 / C-7 ML012040470 3 N2CCPSV4646 RCP 2B MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#2 / D-3 ML012040470 3 N2CCPSV4646A RCP 2B MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#2 / C-3 ML012040470 3 N2CCPSV4647 RCP 2C MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#2 / G-3 ML012040470 3 N2CCPSV4647A RCP 2C MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#2 / F-3 ML012040470 3 N2CCPSV4648 RCP 2D MOTOR AIR COOLER NO. 1 OUTLET RELIEF VALVE 5R209F05021#2 / G-6 ML012040470 3 N2CCPSV4648A RCP 2D MOTOR AIR COOLER NO. 2 OUTLET RELIEF VALVE 5R209F05021#2 / F-6 ML012040470 3 N2CHPSV9471 ECHW TRAIN A EXPANSION TANK VTS004 5V119V10001#2 / H-7 ML012040470 3 N2CHPSV9471A ECHW TRAIN A EXPANSION TANK VTS004 NITROGEN 5V119V10001#2 / H-7 ML012040470 3 N2CHPSV9481 ECHW TRAIN B EXPANSION TANK VTS005 5V119V10001#2 / E-7 ML012040470 3 N2CHPSV9481A ECHW TRAIN B EXPANSION TANK VTS005 NITROGEN 5V119V10001#2 / E-7 ML012040470 3 N2CHPSV9491 ECHW TRAIN C EXPANSION TANK VTS006 5V119V10001#2 / C-7 ML012040470 3 N2CHPSV9491A ECHW TRAIN C EXPANSION TANK VTS006 NITROGEN 5V119V10001#2 / C-7 ML012040470 3 N2CHPSV9502 ECHW TRAIN A ESSEN CHLR 22A OUTLET 5V119V10001#2 / G-4 ML012040470 3 N2CHPSV9508 ECHW TRAIN B ESSEN CHLR 22B OUTLET 5V119V10001#2 / E-4 ML012040470 3 N2CHPSV9514 ECHW TRAIN C ESSEN CHLR 22C OUTLET 5V119V10001#2 / B-4 ML012040470 3 N2CVFCV0110A BORIC ACID TO CVCS BLENDER TEE FLOW CONTROL VALVE 5R179F05007#2 / D-2 ML012040470 2 N2CVFCV0110B CVCS BLENDED FLOW TO VCT OUTLET FLOW CONTROL VALVE 5R179F05007#2 / F-3 ML012040470 2 N2CVFCV0111A RX MAKE-UP TO CVCS BLENDING TEE FLOW CONTROL VALVE 5R179F05007#2 / F-2 ML012040470 2 N2CVFCV0111B CVCS BLENDED FLOW TO VCT FLOW CONTROL VALVE 5R179F05007#2 / F-3 ML012040470 2 N2CVFCV0201 CENTRIFUGAL CHARGING PUMP 2A RECIRC FLOW CONTROL VALVE 5R179F05007#2 / C-6 ML012040470 2 N2CVFCV0202 CENTRIFUGAL CHARGING PUMP 2B RECIRC FLOW CONTROL VALVE 5R179F05007#2 / D-6 ML012040470 2 N2CVPSV3101 CVCS VOLUME CONTROL TANK PRESSURE RELIEF VALVE 5R179F05007#2 / F-4 ML012040470 2 N2CVPSV3376 BTRS LETDOWN CHILLER HX INLET PRESSURE RELIEF VALVE 5R179F05008#2 / F-2 ML012040470 2 N2EWPSV6853 CCW HEAT EXCHANGER TRAIN A PRESSURE RELIEF 5R289F05038SH1#2 / G- ML012040470 3 7

N2EWPSV6855 DG HEAT EXCHANGER TRAIN A PRESSURE RELIEF 5R289F05038SH1#2 / G- ML012040470 3 2

N2EWPSV6856 CCW PUMP SUPP CLR TRAIN A PRESSURE RELIEF 5R289F05038SH1#2 / G- ML012040470 3 8

N2EWPSV6863 CCW HEAT EXCHANGER TRAIN B PRESSURE RELIEF 5R289F05038SH2#2 / G- ML012040470 3 7

N2EWPSV6865 DG HEAT EXCHANGER TRAIN B PRESSURE RELIEF 5R289F05038SH2#2 / G- ML012040470 3 2

N2EWPSV6866 CCW PUMP SUPP CLR TRAIN B PRESSURE RELIEF 5R289F05038SH2#2 / G- ML012040470 3 8

N2EWPSV6873 CCW HEAT EXCHANGER TRAIN C PRESSURE RELIEF 5R289F05038SH3#2 / G- ML012040470 3 7

N2EWPSV6875 DG HEAT EXCHANGER TRAIN C PRESSURE RELIEF 5R289F05038SH3#2 / G- ML012040470 3 2

N2EWPSV6876 CCW PUMP SUPP CLR TRAIN C PRESSURE RELIEF 5R289F05038SH3#2 / G- ML012040470 3 8

N2EWPSV6904 EAB HVAC CHILLER 4 TRAIN A PRESSURE RELIEF 5R289F05038SH1#2 / G- ML012040470 3 4

N2EWPSV6905 EAB HVAC CHILLER 5 TRAIN B PRESSURE RELIEF 5R289F05038SH2#2 / G- ML012040470 3 4

N2EWPSV6906 EAB HVAC CHILLER 6 TRAIN C PRESSURE RELIEF 5R289F05038SH3#2 / G- ML012040470 3 4

N2FWFCV0551 STEAM GENERATOR 2A FEEDWATER REG VALVE 5S139F00063#2 / D-8 ML012040470 NC N2FWFCV0552 STEAM GENERATOR 2B FEEDWATER REG VALVE 5S139F00063#2 / D-6 ML012040470 NC N2FWFCV0553 STEAM GENERATOR 2C FEEDWATER REG VALVE 5S139F00063#2 / D-4 ML012040470 NC N2FWFCV0554 STEAM GENERATOR 2D FEEDWATER REG VALVE 5S139F00063#2 / D-2 ML012040470 NC

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 90 of 136 ATTACHMENT 9: Unit 2 ML012040470 Exempt Valve List Valve ID Component Description Drawing / Category Class Coordinate N2FWFV7151 STEAM GENERATOR 2A LOW POWER FEED REG VALVE 5S139F00063#2 / D-7 ML012040470 NC N2FWFV7152 STEAM GENERATOR 2B LOW POWER FEED REG VALVE 5S139F00063#2 / D-5 ML012040470 NC N2FWFV7153 STEAM GENERATOR 2C LOW POWER FEED REG VALVE 5S139F00063#2 / D-3 ML012040470 NC N2FWFV7154 STEAM GENERATOR 2D LOW POWER FEED REG VALVE 5S139F00063#2 / D-1 ML012040470 NC N2LUPSV5482 LUBE OIL CIRC PUMP DISCHARGE SAFETY VALVE 5Q159F22542#2 / D-7 ML012040470 3 N2LUPSV5582 LUBE OIL CIRC PUMP DISCHARGE SAFETY VALVE 5Q159F22542#2 / D-5 ML012040470 3 N2LUPSV5682 LUBE OIL CIRC PUMP DISCHARGE SAFETY VALVE 5Q159F22542#2 / D-2 ML012040470 3 N2RHPSV3934 LHSI PUMP 2A HOT LEG RECIRC RELIEF VALVE 5R169F20000#2 / C-4 ML012040470 2 N2RHPSV3943 LHSI PUMP 2B HOT LEG RECIRC RELIEF VALVE 5R169F20000#2 / F-4 ML012040470 2 N2RHPSV3944 LHSI PUMP 2C HOT LEG RECIRC RELIEF VALVE 5R169F20000#2 / H-4 ML012040470 2 N2SIFV3950 LO HEAD SAFETY INJECTION TRAIN A TO LOOP 2A COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#2 / C-2 ML012040470 2 N2SIFV3951 LO HEAD SAFETY INJECTION TRAIN A TO LOOP 2A COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#2 / C-2 ML012040470 2 N2SIFV3952 HI HEAD SAFETY INJECTION TRAIN A TO LOOP 2A COLD LEG SIS TEST ISOLATION VALVE 5N129F05013#2 / F-7 ML012040470 2 N2SIFV3953 HI HEAD SAFETY INJ TRN A TO LOOP 2A HOT LEG SIS TEST ISOL VALVE 5N129F05013#2 / G-7 ML012040470 2 N2SIFV3954 SAFETY INJECTION TRAIN A TO LOOP 1A HOT LEG SIS TEST ISOLATION VALVE 5N129F05013#2 / G-8 ML012040470 2 N2SIFV3955 LO HEAD SAFETY INJECTION TRAIN B TO LOOP 2B COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#2 / E-2 ML012040470 2 N2SIFV3956 LO HEAD SAFETY INJECTION TRAIN B TO LOOP 2B HOT LEG SIS TEST ISOLATION VALVE 5R169F20000#2 / F-2 ML012040470 2 N2SIFV3957 HI HEAD SAFETY INJECTION TRAIN B TO LOOP 2B COLD LEG SIS TEST ISOLATION VALVE 5N129F05014#2 / F-7 ML012040470 2 N2SIFV3958 HI HEAD SAFETY INJECTION TRAIN B TO LOOP 2B HOT LEG SIS TEST ISOLATION VALVE 5N129F05014#2 / G-7 ML012040470 2 N2SIFV3959 SAFETY INJECTION TRAIN B TO LOOP 2B HOT LEG SIS TEST ISOLATION VALVE 5N129F05014#2 / H-7 ML012040470 2 N2SIFV3960 LO HEAD SAFETY INJECTION TRAIN C TO LOOP 2C COLD LEG SIS TEST ISOLATION VALVE 5R169F20000#2 / G-2 ML012040470 2 N2SIFV3964 SAFETY INJECTION TRAIN C PUMPS TO LOOP 2C HOT LEG SIS TEST ISOLATION VALVE 5N129F05015#2 / G-7 ML012040470 2 N2SIFV3967 SI ACC 2B OUTLET CK SI-0046B DOWNSTREAM SIS TEST VALVE 5N129F05016#2 / D-7 ML012040470 2 N2SIFV3968 SI ACC 2B OUTLET CK SI-0046B UPSTREAM SIS TEST VALVE 5N129F05016#2 / D-6 ML012040470 2 N2SIFV3969 SI ACC 2A OUTLET CK SI-0046A UPSTREAM SIS TEST VALVE 5N129F05016#2 / G-6 ML012040470 2 N2SIFV3972 SI ACC 2A OUTLET CK SI-0046A DOWNSTREAM SIS TEST VALVE 5N129F05016#2 / G-6 ML012040470 2 N2SIFV3973 SAFETY INJECTION ACCUMULATOR 2A FILL LINE ISOLATION VALVE 5N129F05016#2 / F-4 ML012040470 2 N2SIFV3974 SAFETY INJECTION ACCUMULATOR 2B FILL LINE ISOLATION VALVE 5N129F05016#2 / D-4 ML012040470 2 N2SIFV3975 SAFETY INJECTION ACCUMULATOR 2C FILL LINE ISOLATION VALVE 5N129F05016#2 / B-4 ML012040470 2 N2SIPSV3935 TRAIN A SI PUMP SUCTION HEADER RELIEF VALVE 5N129F05013#2 / C-2 ML012040470 2 N2SIPSV3938 TRAIN A HHSI HOT LEG/COLD LEG RELIEF VALVE 5N129F05013#2 / G-6 ML012040470 2 N2SIPSV3939 TRAIN B SI PUMP SUCTION HEADER RELIEF VALVE 5N129F05014#2 / D-2 ML012040470 2 N2SIPSV3940 TRAIN B HHSI HOT LEG/COLD LEG RELIEF VALVE 5N129F05014#2 / F-6 ML012040470 2 N2SIPSV3941 TRAIN C SI PUMP SUCTION HEADER RELIEF VALVE 5N129F05015#2 / C-2 ML012040470 2 N2SIPSV3942 TRAIN C HHSI HOT LEG/COLD LEG RELIEF VALVE 5N129F05015#2 / F-6 ML012040470 2 N2SIPSV3977 SI ACCUMULATOR TANK 2C RELIEF VALVE 5N129F05016#2 / C-4 ML012040470 2 N2SIPSV3980 SI ACCUMULATOR TANK 2B RELIEF VALVE 5N129F05016#2 / E-4 ML012040470 2 N2SIPSV3981 SI ACCUMULATOR TANK 2A RELIEF VALVE 5N129F05016#2 / G-4 ML012040470 2

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 91 of 136 ATTACHMENT 10: Unit 1 ISTC Skid Tested Valve List Valve ID Component Description Drawing / Coordinate Cat Class 2C261XXC0009 PERSONNEL AIRLOCK OUTER DOOR SEAL AIR SUPPLY TO AIR TANKS CHECK VALVE 5C269F05060#1 / G-5 Skid 2 2C261XXC0010 PERSONNEL AIRLOCK REACTOR DOOR SEAL AIR SUPPLY TO AIR TANKS CHECK VALVE 5C269F05060#1 / G-7 Skid 2 2C261XXC0013 PERSONNEL AIRLOCK OUTER DOOR INNER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#1 / F-6 Skid 2 2C261XXC0014 PERSONNEL AIRLOCK OUTER DOOR OUTER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#1 / F-5 Skid 2 2C261XXC0015 PERSONNEL AIRLOCK REACTOR DOOR INNER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#1 / F-8 Skid 2 2C261XXC0016 PERSONNEL AIRLOCK REACTOR DOOR OUTER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#1 / F-7 Skid 2 2C261XXC0018 EQUALIZING BALL VALVE 5C269F05060#1 / F-5 Skid 2 2C261XXC0019 EQUALIZING BALL VALVE 5C269F05060#1 / F-5 Skid 2 2C261XXC0021 EQUALIZING BALL VALVE 5C269F05060#1 / F-8 Skid 2 2C261XXC0022 EQUALIZING BALL VALVE 5C269F05060#1 / F-8 Skid 2 2C261XXC0024 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#1 / E-5 Skid 2 2C261XXC0025 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#1 / E-6 Skid 2 2C261XXC0026 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#1 / E-7 Skid 2 2C261XXC0027 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#1 / E-8 Skid 2 2C261XXC0048 RCB PERSONNEL AIRLOCK AIR SAFETY VALVE 5C269F05060#1 / C-7 Skid 2 2C261XXC0049 RCB PERSONNEL AIRLOCK AIR SAFETY VALVE 5C269F05060#1 / C-7 Skid 2 2C501XXC0060 EQUALIZING BALL VALVE 5C269F05060#1 / F-5 Skid 2 2C501XXC0061 EQUALIZING BALL VALVE 5C269F05060#1 / F-5 Skid 2 2C501XXC0070 EQUALIZING BALL VALVE 5C269F05060#1 / F-8 Skid 2 2C501XXC0071 EQUALIZING BALL VALVE 5C269F05060#1 / F-8 Skid 2 2R171SCV3008 CCP 1B AUX LUBE OIL PUMP DISCHARGE CHECK VALVE 2R171F05062 / D-7 Skid NC 2R171SCV3009 MAIN LUBE OIL PUMP SUCTION CHECK VALVE (INTERNAL TO TANK) 2R171F05062 / H-6 Skid NC 2R171SCV3010 MAIN LUBE OIL PUMP SUCTION CHECK VALVE (INTERNAL TO TANK) 2R171F05062 / D-6 Skid NC 3Q151SJW3036 STANDBY JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#1 / E7 Skid 3 3Q151SJW3037 STANDBY JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#1 / E4 Skid 3 3Q151SJW3038 STANDBY JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#1 / E1 Skid 3 3Q151SJW3039 ENGINE-DRIVEN JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#1 / D-7 Skid NC 3Q151SJW3040 ENGINE-DRIVEN JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#1 / D-5 Skid NC 3Q151SJW3041 ENGINE-DRIVEN JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#1 / D-2 Skid NC 3Q151SJW3042 JACKET WATER CIRC HEATER OUTLET CHECK VALVE 5Q159F22540#1 / C7 Skid 3 3Q151SJW3043 JACKET WATER CIRC HEATER OUTLET CHECK VALVE 5Q159F22540#1 / C4 Skid 3 3Q151SJW3044 JACKET WATER CIRC HEATER OUTLET CHECK VALVE 5Q159F22540#1 / C2 Skid 3 3Q151SLU3078 ENGINE-DRIVEN LUBE OIL PUMP SUCTION CHECK VALVE 5Q159F22542#1 / E-7 Skid NC 3Q151SLU3079 ENGINE-DRIVEN LUBE OIL PUMP SUCTION CHECK VALVE 5Q159F22542#1 / E-5 Skid NC 3Q151SLU3080 ENGINE-DRIVEN LUBE OIL PUMP SUCTION CHECK VALVE 5Q159F22542#1 / E-2 Skid NC 3Q151SLU3081 STANDBY LUBE OIL PUMP DISCHARGE CHECK VALVE 5Q159F22542#1 / E7 Skid 3 3Q151SLU3082 STANDBY LUBE OIL PUMP DISCHARGE CHECK VALVE 5Q159F22542#1 / E4 Skid 3 3Q151SLU3083 STANDBY LUBE OIL PUMP DISCHARGE CHECK VALVE 5Q159F22542#1 / E2 Skid 3 3Q151SLU3084 LUBE OIL CIRC HEATER OUTLET CHECK VALVE 5Q159F22542#1 / E7 Skid 3 3Q151SLU3085 LUBE OIL CIRC HEATER OUTLET CHECK VALVE 5Q159F22542#1 / E4 Skid 3 3Q151SLU3086 LUBE OIL CIRC HEATER OUTLET CHECK VALVE 5Q159F22542#1 / E2 Skid 3 3Q151SLU3090 TURBO CHARGER LUBE OIL SUPPLY CHECK VALVE 5Q159F22542#1 / G-8 Skid NC 3Q151SLU3091 TURBO CHARGER LUBE OIL SUPPLY CHECK VALVE 5Q159F22542#1 / G-5 Skid NC 3Q151SLU3092 TURBO CHARGER LUBE OIL SUPPLY CHECK VALVE 5Q159F22542#1 / G-3 Skid NC 3Q151TDO0056 FUEL OIL TRANSFER PUMP DISCHARGE TO FOST NORMAL FILL LINE CHECK VALVE 5Q159F00045#1 / F-6 Skid 3 3Q151TDO0062 FUEL OIL TRANSFER PUMP DISCHARGE TO FOST NORMAL FILL LINE CHECK VALVE 5Q159F00045#1 / F-4 Skid 3 3Q151TDO0068 FUEL OIL TRANSFER PUMP DISCHARGE TO FOST NORMAL FILL LINE CHECK VALVE 5Q159F00045#1 / F-1 Skid 3 3Q151TDO0126 COLLECTOR TANK VENT TO FUEL OIL STORAGE TANK CHECK VALVE 5Q159F00045#1 / F6 Skid 3 3Q151TDO0127 COLLECTOR TANK VENT TO FUEL OIL STORAGE TANK CHECK VALVE 5Q159F00045#1 / F4 Skid 3 3Q151TDO0128 COLLECTOR TANK VENT TO FUEL OIL STORAGE TANK CHECK VALVE 5Q159F00045#1 / F1 Skid 3 3R171SCV3007 CCP 1A AUX LUBE OIL PUMP DISCHARGE CHECK VALVE 2R171F05062 / H-7 Skid NC N1CVPSV3386 CCP 1A LUBE OIL HEADER PRESSURE RELIEF VALVE 2R171F05062 / H-7 Skid NC N1CVPSV3387 CCP 1B LUBE OIL HEADER PRESSURE RELIEF VALVE 2R171F05062 / D-7 Skid NC N1SDFV5434 DG #11 LEFT BANK CRANKING AIR VALVE 5Q159F22544#1 / C-7 Skid NC N1SDFV5435 DG #11 RIGHT BANK CRANKING AIR VALVE 5Q159F22544#1 / G-7 Skid NC N1SDFV5534 DG #12 LEFT BANK CRANKING AIR VALVE 5Q159F22544#1 / C-4 Skid NC N1SDFV5535 DG #12 RIGHT BANK CRANKING AIR VALVE 5Q159F22544#1 / G-4 Skid NC N1SDFV5634 DG #13 LEFT BANK CRANKING AIR VALVE 5Q159F22544#1 / C-2 Skid NC N1SDFV5635 DG #13 RIGHT BANK CRANKING AIR VALVE 5Q159F22544#1 / G-2 Skid NC

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 92 of 136 ATTACHMENT 11: Unit 2 ISTC Skid Tested Valve List Valve ID Component Description Drawing / Coordinate Cat Class 2C262XXC0009 PERSONNEL AIRLOCK OUTER DOOR SEAL AIR SUPPLY TO AIR TANKS CHECK VALVE 5C269F05060#2 / G-5 Skid 2 2C262XXC0010 PERSONNEL AIRLOCK REACTOR DOOR SEAL AIR SUPPLY TO AIR TANKS CHECK VALVE 5C269F05060#2 / G-7 Skid 2 2C262XXC0013 PERSONNEL AIRLOCK OUTER DOOR INNER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#2 / F-6 Skid 2 2C262XXC0014 PERSONNEL AIRLOCK OUTER DOOR OUTER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#2 / F-5 Skid 2 2C262XXC0015 PERSONNEL AIRLOCK REACTOR DOOR INNER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#2 / F-8 Skid 2 2C262XXC0016 PERSONNEL AIRLOCK REACTOR DOOR OUTER SEAL AIR TANK INLET CHECK VALVE 5C269F05060#2 / F-7 Skid 2 2C262XXC0018 EQUALIZING BALL VALVE 5C269F05060#2 / F-5 Skid 2 2C262XXC0019 EQUALIZING BALL VALVE 5C269F05060#2 / F-5 Skid 2 2C262XXC0021 EQUALIZING BALL VALVE 5C269F05060#2 / F-8 Skid 2 2C262XXC0022 EQUALIZING BALL VALVE 5C269F05060#2 / F-8 Skid 2 2C262XXC0024 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#2 / E-5 Skid 2 2C262XXC0025 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#2 / E-6 Skid 2 2C262XXC0026 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#2 / E-7 Skid 2 2C262XXC0027 AIR TANK OUTLET ISOLATION VALVE 5C269F05060#2 / E-8 Skid 2 2C262XXC0048 RCB PERSONNEL AIRLOCK AIR SAFETY VALVE 5C269F05060#2 / C-7 Skid 2 2C262XXC0049 RCB PERSONNEL AIRLOCK AIR SAFETY VALVE 5C269F05060#2 / C-7 Skid 2 2C502XXC0060 EQUALIZING BALL VALVE 5C269F05060#2 / F-5 Skid 2 2C502XXC0061 EQUALIZING BALL VALVE 5C269F05060#2 / F-5 Skid 2 2C502XXC0070 EQUALIZING BALL VALVE 5C269F05060#2 / F-8 Skid 2 2C502XXC0071 EQUALIZING BALL VALVE 5C269F05060#2 / F-8 Skid 2 2R172SCV3007 CCP 2A AUX LUBE OIL PUMP DISCHARGE CHECK VALVE 5R172F05062 / H-7 Skid NC 2R172SCV3008 CCP 2B AUX LUBE OIL PUMP DISCHARGE CHECK VALVE 5R172F05062 / D-7 Skid NC 2R172SCV3009 MAIN LUBE OIL PUMP SUCTION CHECK VALVE (INTERNAL TO TANK) 5R172F05062 / H-6 Skid NC 2R172SCV3010 MAIN LUBE OIL PUMP SUCTION CHECK VALVE (INTERNAL TO TANK) 5R172F05062 / D-6 Skid NC 3Q152SJW3036 STANDBY JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#2 / E7 Skid 3 3Q152SJW3037 STANDBY JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#2 / E4 Skid 3 3Q152SJW3038 STANDBY JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#2 / E1 Skid 3 3Q152SJW3039 ENGINE-DRIVEN JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#2 / D-7 Skid NC 3Q152SJW3040 ENGINE-DRIVEN JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#2 / D-5 Skid NC 3Q152SJW3041 ENGINE-DRIVEN JACKET WATER PUMP DISCHARGE CHECK VALVE 5Q159F22540#2 / D-2 Skid NC 3Q152SJW3042 JACKET WATER CIRC HEATER OUTLET CHECK VALVE 5Q159F22540#2 / C7 Skid 3 3Q152SJW3043 JACKET WATER CIRC HEATER OUTLET CHECK VALVE 5Q159F22540#2 / C4 Skid 3 3Q152SJW3044 JACKET WATER CIRC HEATER OUTLET CHECK VALVE 5Q159F22540#2 / C2 Skid 3 3Q152SLU3078 ENGINE-DRIVEN LUBE OIL PUMP SUCTION CHECK VALVE 5Q159F22542#2 / E-7 Skid NC 3Q152SLU3079 ENGINE-DRIVEN LUBE OIL PUMP SUCTION CHECK VALVE 5Q159F22542#2 / E-5 Skid NC 3Q152SLU3080 ENGINE-DRIVEN LUBE OIL PUMP SUCTION CHECK VALVE 5Q159F22542#2 / E-2 Skid NC 3Q152SLU3081 STANDBY LUBE OIL PUMP DISCHARGE CHECK VALVE 5Q159F22542#2 / E7 Skid 3 3Q152SLU3082 STANDBY LUBE OIL PUMP DISCHARGE CHECK VALVE 5Q159F22542#2 / E4 Skid 3 3Q152SLU3083 STANDBY LUBE OIL PUMP DISCHARGE CHECK VALVE 5Q159F22542#2 / E2 Skid 3 3Q152SLU3084 LUBE OIL CIRC HEATER OUTLET CHECK VALVE 5Q159F22542#2 / E7 Skid 3 3Q152SLU3085 LUBE OIL CIRC HEATER OUTLET CHECK VALVE 5Q159F22542#2 / E4 Skid 3 3Q152SLU3086 LUBE OIL CIRC HEATER OUTLET CHECK VALVE 5Q159F22542#2 / E2 Skid 3 3Q152SLU3090 TURBO CHARGER LUBE OIL SUPPLY CHECK VALVE 5Q159F22542#2 / G-8 Skid NC 3Q152SLU3091 TURBO CHARGER LUBE OIL SUPPLY CHECK VALVE 5Q159F22542#2 / G-5 Skid NC 3Q152SLU3092 TURBO CHARGER LUBE OIL SUPPLY CHECK VALVE 5Q159F22542#2 / G-3 Skid NC 3Q152TDO0056 FUEL OIL TRANSFER PUMP DISCHARGE TO FOST NORMAL FILL LINE CHECK VALVE 5Q159F00045#2 / F-6 Skid 3 3Q152TDO0062 FUEL OIL TRANSFER PUMP DISCHARGE TO FOST NORMAL FILL LINE CHECK VALVE 5Q159F00045#2 / F-4 Skid 3 3Q152TDO0068 FUEL OIL TRANSFER PUMP DISCHARGE TO FOST NORMAL FILL LINE CHECK VALVE 5Q159F00045#2 / F-1 Skid 3 3Q152TDO0126 COLLECTOR TANK VENT TO FUEL OIL STORAGE TANK CHECK VALVE 5Q159F00045#2 / F6 Skid 3 3Q152TDO0127 COLLECTOR TANK VENT TO FUEL OIL STORAGE TANK CHECK VALVE 5Q159F00045#2 / F4 Skid 3 3Q152TDO0128 COLLECTOR TANK VENT TO FUEL OIL STORAGE TANK CHECK VALVE 5Q159F00045#2 / F1 Skid 3 N2CVPSV3386 CCP 2A LUBE OIL HEADER PRESSURE RELIEF VALVE 2R172F05062 / H-7 Skid NC N2CVPSV3387 CCP 2B LUBE OIL HEADER PRESSURE RELIEF VALVE 5R172F05062 / D-7 Skid NC N2SDFV5434 DG #21 LEFT BANK CRANKING AIR VALVE 5Q159F22544#2 / C-7 Skid NC N2SDFV5435 DG #21 RIGHT BANK CRANKING AIR VALVE 5Q159F22544#2 / G-7 Skid NC N2SDFV5534 DG #22 LEFT BANK CRANKING AIR VALVE 5Q159F22544#2 / C-4 Skid NC N2SDFV5535 DG #22 RIGHT BANK CRANKING AIR VALVE 5Q159F22544#2 / G-4 Skid NC N2SDFV5634 DG #23 LEFT BANK CRANKING AIR VALVE 5Q159F22544#2 / C-2 Skid NC N2SDFV5635 DG #23 RIGHT BANK CRANKING AIR VALVE 5Q159F22544#2 / G-2 Skid NC

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 93 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-01 System: Chemical and Volume Control (CV)

Code Valve ID Description Category Drawing Class CVCS Letdown Orifice Header C1(2)CVFV0011 2 B 5R179F05005 Isolation Valve CVCS Charging ORC Containment 2R171(2)XCV0025 2 A 5R179F05005 Isolation MOV CVCS Charging Discharge Header A1(2)CVFCV0205 2 B 5R179F05007 Flow Control Valve 1R171(2)XCV0465 CVCS Letdown Isolation MOV 1 B 5R179F05005 1R171(2)XCV0468 CVCS Letdown Isolation MOV 1 B 5R179F05005 Valve Function:

C1(2)CVFV0011, 2R171(2)XCV0025 have a closed safety function to isolate the letdown line or charging line in response to a Containment Phase A signal.

2R171(2)XCV0025 is a containment isolation valve and has a closed safety function to maintain containment integrity.

In addition to the above closed safety function, 2R171(2)XCV0025 also has an open safety function to provide a flow path to the RCS for boron and water inventory control once the Phase A signal has been reset.

A1(2)CVFCV0205 has an open safety function to provide a flow path to the RCS for boron and water inventory control.

1R171(2)XCV0465 and 1R171(2)XCV0468 have a closed safety function to isolate the letdown line in response to a pressurizer low level signal to maintain the RCS pressure boundary integrity.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke open and closed exercise) of these valves during normal power operation would require a momentary interruption of letdown and charging flow. Failure of any of these components in the closed position or interruptions to the letdown and charging flow has the potential to cause perturbations in RCS pressure and level control and could result in a plant shutdown. Isolation of letdown or charging during normal power operation would result in thermal shock and possible damage to the Regenerative Heat Exchanger and the Letdown Heat Exchanger.

Alternate Testing:

These valves will be tested (full stroke open and closed exercise) at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(c)

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 94 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-02 System: Chemical and Volume Control (CV)

Code Valve ID Description Category Drawing Class CVCS Volume Control Tank Outlet 2R171(2)XCV0112B 2 B 5R179F05007 MOV CVCS Volume Control Tank Outlet 2R171(2)XCV0113A 2 B 5R179F05007 MOV Valve Function:

Valves 2R171(2)XCV0112B and 2R171(2)XCV0113A have a closed safety function to switch charging pump suction from the VCT to the RWST in response to a SI signal coincident with an open signal from the RWST isolation valves, MOV-0112C and MOV-0113B.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke close exercise) of valves 2R171(2)XCV0112B and 2R171(2)XCV0113A during normal power operation would require opening the RWST isolation valves to ensure charging pump suction is not lost. Opening the RWST isolation valves would affect the boron concentration of the RCS and cause an undesirable plant power transient.

Alternate Testing:

Valves 2R171(2)XCV0112B and 2R171(2)XCV0113A will be tested (full stroke close exercise) at each cold shutdown not to exceed once every three months per the requirements ofISTC-3521(c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 95 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-03 System: Chemical and Volume Control (CV)

Code Valve ID Description Category Drawing Class CVCS Auxiliary Spray Level N1(2)CVLV3119 1 B 5R179F05005 Control Valve Valve Function:

This valve has an open safety function to provide auxiliary spray to the pressurizer to stabilize RCS pressure and collapse the pressurizer steam bubble.

Valve N1(2)CVLV3119 also has a passive closed safety function to maintain the RCS pressure boundary integrity.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke open and close exercise) of these valves during normal power operation would subject the pressurizer auxiliary spray nozzle to cold water and could possibly thermally shock the nozzle. The introduction of the cold spray water into the pressurizer at power would create an undesired transient.

Alternate Testing:

This valve will be tested (full stroke open and close exercise) at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 96 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-04 System: Chemical and Volume Control (CV)

Valve ID Description Code Category Drawing Class 2R171(2) XCV0224 CVCS Charging Pumps Suction from 2 C 5R179F05007 RWST Check Valve 2R171(2)TCV0707 Centrifugal Charging Pump 1(2)B 2 C 5R179F05007 Discharge Bypass Check Valve Valve Function:

These valves have an open safety function to provide an emergency boration or an emergency alternate boration flow path to the RCS via the suction of the charging pumps.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months. ISTC-3522(a) requires that each check valve be exercised or examined in a manner that verifies obturator travel to the closed and open position required to fulfill its function.

Basis for Deferral:

The operability testing (full stroke open exercise) of these valves during normal power operation would affect boron concentration in the RCS and cause an undesirable plant power transient and possible plant shutdown.

Alternate Testing:

These valves will be tested (full stroke open exercise) at each cold shutdown not to exceed once every three months per the requirements of ISTC-3522(b).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 97 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-05 System: Feedwater (FW)

Code Valve ID Description Category Drawing Class Steam Generator 1(2)A ORC Feedwater A1(2)FWFV7141 2 B 5S139F00063 Isolation Valve Steam Generator 1(2)B ORC Feedwater A1(2)FWFV7142 2 B 5S139F00063 Isolation Valve Steam Generator 1(2)C ORC Feedwater A1(2)FWFV7143 2 B 5S139F00063 Isolation Valve Steam Generator 1(2)D ORC Feedwater A1(2)FWFV7144 2 B 5S139F00063 Isolation Valve Valve Function:

These valves have a closed safety function to stop feedwater flow to their respective steam generator upon receipt of a SG high-high level, low steam line pressure, safety injection initiation signal, a reactor trip in conjunction with low average reactor coolant system temperature, or an excessive cooldown signal.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke close exercise) of these valves during normal power operation would require an interruption of feedwater flow to the steam generators. Isolation of feedwater flow during normal power operation would cause an undesirable power transient and could possibly cause a turbine/reactor trip. The partial stroke exercise of these valves is undesirable because of the increased risk of a valve closure and subsequent plant transient. Any possible benefit from performing a partial stroke of these valves at power is outweighed by the increased risk of closing the valves and challenging plant systems. This position is consistent with NUREG-1482, Rev. 3, Section 4.2.6. (ref.

CR 02-10007, NOC- NOC-02007695)

Alternate Testing:

These valves will be full-stroke close exercise tested at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 98 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-06 System: Feedwater (FW)

Code Valve ID Description Category Drawing Class Steam Generator 1(2)A Preheater A1(2)FWFV7189 2 B 5S139F00063 ORC Bypass Valve Steam Generator 1(2)B Preheater A1(2)FWFV7190 2 B 5S139F00063 ORC Bypass Valve Steam Generator 1(2)C Preheater A1(2)FWFV7191 2 B 5S139F00063 ORC Bypass Valve Steam Generator 1(2)D Preheater A1(2)FWFV7192 2 B 5S139F00063 ORC Bypass Valve Valve Function:

These valves have a closed safety function to stop feedwater flow to their respective steam generator upon receipt of a SG high-high level, safety injection initiation signal, or a reactor trip in conjunction with low average reactor coolant system temperature.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke close exercise) of these valves during normal power operation would require injecting Main Feedwater through the cooler Auxiliary Feedwater lines into the steam generator. Injecting the cooler water existing in the auxiliary feedwater lines followed immediately by the hotter Main Feedwater flow would cause thermal shock and possible damage to the Auxiliary Feedwater nozzles at the steam generator boundary.

Alternate Testing:

These valves will be full-stroke close exercise tested at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521 (c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 99 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-07 System: Reactor Containment Purge (HC)

Code Valve ID Description Category Drawing Class Reactor Containment Building 2V141(2)ZHC0007 Normal Purge Supply (ORC) 2 A 5V149V00018 Isolation Damper Reactor Containment Building 2V141(2)ZHC0008 Normal Purge Supply (IRC) 2 A 5V149V00018 Isolation Damper Reactor Containment Building 2V141(2)ZHC0009 Normal Purge Exhaust (IRC) 2 A 5V149V00018 Isolation Damper Reactor Containment Building 2V141(2)ZHC0010 Normal Purge Exhaust (ORC) 2 A 5V149V00018 Isolation Damper Valve Function:

These valves have a leak tight, closed safety function to maintain containment integrity in response to a Phase A Containment Isolation signal.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The 48 inch Containment Purge valves are required by Technical Specifications to be sealed closed during normal power operation.

Alternate Testing:

These valves will be full-stroke close exercise tested at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 100 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-08 System: Main Steam (MS)

Code Valve ID Description Category Drawing Class Steam Generator 1(2)A Main Steam A1(2)MSFSV7414 2 B 5S109F00016 ORC Isolation Valve Steam Generator 1(2)B Main Steam A1(2)MSFSV7424 2 B 5S109F00016 ORC Isolation Valve Steam Generator 1(2)C Main Steam A1(2)MSFSV7434 2 B 5S109F00016 ORC Isolation Valve Steam Generator 1(2)D Main Steam A1(2)MSFSV7444 2 B 5S109F00016 ORC Isolation Valve Valve Function:

These valves have a closed safety function in response to a low steam line pressure, high negative steam line pressure rate, or a high containment pressure signal to prevent more than one steam generator from blowing down in the event of a main s team line or feedwater line break, prevent containment over-pressurization from reverse flow due to a steam line break inside containment, and provide for isolation of the secondary side of the steam generators in the event of leakage (SGTR) or malfunctions (MSLB or FWLB) and to isolate non safety-related portions of the system.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke close exercise) of these valves during normal power operation would isolate main steam flow from the steam generators which would result in a severe transient to the steam generator causing a plant trip. The partial stroke test circuitry of these valves is not fault-tolerant and the failure of a single limit switch or solenoid valve could result in the MSIV stroking completely shut. The partial stroke exercise of these valves is undesirable because of the increased risk of a valve closure and subsequent plant transient. Any possible benefit from performing a partial stroke of these valves at power is outweighed by the increased risk of closing the valves and challenging plant systems. This position is consistent with NUREG-1482, Rev. 3, Section 4.2.6.

Alternate Testing:

These valves will be full-stroke close exercised, stroke timed, and their fail-safe actuation verified at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 101 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-09 System: Main Steam Code Valve ID Description Category Drawing Class SG 1(2)A Main Steam Isolation A1(2)MSFV7412 2 B 5S109F00016 Bypass Valve SG 1(2)B Main Steam Isolation A1(2)MSFV7422 2 B 5S109F00016 Bypass Valve SG 1(2)C Main Steam Isolation A1(2)MSFV7432 2 B 5S109F00016 Bypass Valve SG 1(2)D Main Steam Isolation A1(2)MSFV7442 2 B 5S109F00016 Bypass Valve Valve Function:

These valves have a close safety function in response to a low steam line pressure, high negative steam line pressure rate or a high containment pressure signal to prevent more than one steam generator from blowing down in the event of a main s team line or feedwater line break, prevent containment over-pressurization from reverse flow due to a steam line break inside containment and provide for isolation of the secondary side of the steam generators in the event of leakage (SGTR) or malfunctions (MSLB or FWLB) and to isolate non safety-related portions of the system.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

On-line open exercise testing cycles the main steam open permissive handswitch twice per valve creating risk of MSIV closure in event equipment malfunction or operator error. Valves are each opened twice a minimum of 2 minutes, slightly increasing steam demand and reactor thermal power. MSIBVs are only opened during plant startup for main steam warmup and gland sealing steam and remain in their safety position (closed) the remainder of the cycle. Any benefit from on-line open exercising of these valves is outweighed by the increased risk of MSIV closure and accompanying plant transient. This position is consistent with NUREG-1482, Rev. 3, Section 3.1, Inservice Test Frequencies and Extensions for Valve Testing. (CREE 19-6619-1)

Alternate Testing:

These valves will be full-stroke exercised, stroke timed closed and their fail-safe actuation verified at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(f).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 102 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-10 System: Residual Heat Removal (RH)

Code Valve ID Description Category Drawing Class RHR Pump 1(2)A Suction From 1R161(2)XRH0060A 1 A 5R169F20000 Loop 1A Hot Leg Isolation MOV RHR Pump 1(2)B Suction From 1R161(2)XRH0060B 1 A 5R169F20000 Loop 1B Hot Leg Isolation MOV RHR Pump 1(2)C Suction From 1R161(2)XRH0060C 1 A 5R169F20000 Loop 1C Hot Leg Isolation MOV 1R161(2)XRH0061A RHR Pump 1(2)A Suction MOV 1 A 5R169F20000 1R161(2)XRH0061B RHR Pump 1(2)B Suction MOV 1 A 5R169F20000 1R161(2)XRH0061C RHR Pump 1(2)C Suction MOV 1 A 5R169F20000 Valve Function:

These valves have a leak tight, closed safety function to maintain RCS pressure boundary integrity. These valves also have an open safety function to allow a safety grade cold shutdown of the RCS following a SGTR, SBLOCA, MSLB, or FWLB accident condition.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke open exercise) of these valves during normal power operation cannot be accomplished since these valves are interlocked with RCS pressure and cannot be opened when RCS pressure is greater than 350 psig.

Alternate Testing:

These valves will be stroke time tested (full stroke open and close exercise) at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 103 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No.: CSJ-11 System: Residual Heat Removal (RH)

Code Valve ID Description Category Drawing Class RHR Heat Exchanger 1(2)A Outlet A1(2)RHHCV0864 2 B 5R169F20000 Valve RHR Heat Exchanger 1(2)B Outlet B1(2)RHHCV0865 2 B 5R169F20000 Valve RHR Heat Exchanger 1(2)C Outlet C1(2)RHHCV0866 2 B 5R169F20000 Valve RHR Heat Exchanger 1(2)A Bypass A1(2)RHFCV0851 2 B 5R169F20000 Valve RHR Heat Exchanger 1(2)B Bypass B1(2)RHFCV0852 2 B 5R169F20000 Valve RHR Heat Exchanger 1(2)C Bypass C1(2)RHFCV0853 2 B 5R169F20000 Valve Valve Function:

Valves A1(2)RHFCV0851, B1(2)RHFCV0852, and C1(2)RHFCV0853 have a closed safety function to ensure flow through the RHR Heat Exchanger during safety injection and long term recirculation.

Valves A1(2)RHHCV0864, B1(2)RHHCV0865, and C1(2)RHHCV0866 have an open safety function to ensure flow through the RHR Heat Exchanger and allow a safety grade cold shutdown of the RCS following a SGTR, SBLOCA, MSLB, or FWLB accident condition.

Code Required Tests:

ISTC-5100, Power-Operated Valves, All valves shall be tested in accordance with the applicable requirements of section ISTC-3000, and as identified below, except for power-operated control valves that only have a fail-safe safety function. For power-operated control valves that only have a fail-safe safety function, the requirements for valve stroke-time measurement testing, the associated stroke-time test acceptance criteria, and any corrective actions that would result from stroke-time testing need not be met. For these valves, all other applicable requirements of section ISTC-3000, and as identified below, shall be met.

Basis for Deferral:

These valves are normally inaccessible during power operation. The operability testing (fail safe) of these valves during normal power operation will require lifting electrical leads to ensure repeatable results since the valves are normally controlled via a controller and not a hand switch.

Alternate Testing:

Valves A1(2)RHFCV0851, B1(2)RHFCV0852, and C1(2)RHFCV0853 will be tested (fail safe close test) at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521 (c).

Valves A1(2)RHHCV0864, B1(2)RHHCV0865, and C1(2)RHHCV0866 will be tested (fail safe open test) at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521 (c).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 104 of 136 ATTACHMENT 12: Cold Shutdown Justifications Cold Shutdown Justification No: CSJ-14 System: Feedwater (FW)

Code Valve ID Description Category Drawing Class B1(2)FWFV7145A Feedwater Isolation Bypass Valve 2 B 5S139F00063 B1(2)FWFV7146A Feedwater Isolation Bypass Valve 2 B 5S139F00063 A1(2)FWFV7147A Feedwater Isolation Bypass Valve 2 B 5S139F00063 A1(2)FWFV7148A Feedwater Isolation Bypass Valve 2 B 5S139F00063 Valve Function:

These valves have a closed safety function to stop feedwater flow to their respective steam generator upon receipt of feedwater isolation signal from the ESF system resulting from a SG high-high level, safety injection initiation signal or a reactor trip in conjunction with low average reactor coolant system temperature.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

On-line open exercise testing cycles Feedwater Isolation Valve (FWIV) Permissive hand switches to open 24 individual times (Train A and Train B). Any one of these manipulations, if performed incorrectly or due to an equipment malfunction, risks closing the associated FWIV, necessitating prompt operator action to prevent a reactor trip. FWIBV valves are only opened during plant startup operations and remain in their safety position (closed) the remainder of the cycle. Any benefit from on-line open exercising of these valves is outweighed by the increased risk of FWIV closure and accompanying plant transient. This position is consistent with NUREG-1482, Rev. 3, Section 3.1, Inservice Test Frequencies and Extensions for Valve Testing. (CREE 19-6619-1)

Alternate Testing:

These valves will be full-stroke close exercise tested at each cold shutdown not to exceed once every three months per the requirements of ISTC-3521(f).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 105 of 136 ATTACHMENT 13: Refueling Outage Justifications Refueling Outage Justification No: ROJ-02 System: Component Cooling Water (CC)

Code Valve ID Description Category Drawing Class RCP 1A(2A) Thermal Barrier CCW N1(2)CCFV4620 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1A(2A) Thermal Barrier CCW N1(2)CCFV4621 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1B(2B) Thermal Barrier CCW N1(2)CCFV4626 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1B(2B) Thermal Barrier CCW N1(2)CCFV4627 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1C(2C) Thermal Barrier CCW N1(2)CCFV4632 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1C(2C) Thermal Barrier CCW N1(2)CCFV4633 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1D(2D) Thermal Barrier CCW N1(2)CCFV4638 Return Flow Control Valve Operator 3 C 5R209F05021 RCP 1D(2D) Thermal Barrier CCW N1(2)CCFV4639 Return Flow Control Valve Operator 3 C 5R209F05021 Valve Function:

These valves are normally open and remain open to provide a CCW return flow path from the RCP thermal barrier Heat exchanger. These valves have a closed safety function to prevent over-pressurization of the CCW system in the event of a failure of the thermal barrier.

These valves are normally open, cylinder actuated, self-regulated globe valves. The process water is used as the input signal to the actuator. The valves start to close when the pressure of the process water reaches 120 psig. The valves are fully closed, but not seated at 150 psig. The valves shut off at a pressure of over 200 psig.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke open and closed exercise) of these valves during normal power operation requires isolating the CCW flow to the RCP thermal barrier heat exchanger. Isolating cooling water flow to the thermal barrier during RCP operation could cause a failure of the thermal barrier and a subsequent leak of the RCS into the CCW system. NUREG 1482, Rev. 3, Section 3.1.1.4, states that testing should be performed when RCPs can be stopped. All RCPs are not stopped unless the Reactor Coolant System is cooled and vented which is during Refueling Outages.

Alternate Testing:

These valves will be tested (full stroke open, fail safe open, close exercised and setpoint tested) at each refueling outage per the requirements of ISTC-3521(e).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 106 of 136 ATTACHMENT 13: Refueling Outage Justifications Refueling Outage Justification No: ROJ-03 System: Chemical and Volume Control (CV)

Code Valve ID Description Category Drawing Class CVCS Normal Charging to RCS 2R171(2)XCV0003 2 B 5R179F05005 Loop 1A(2A) Cold Leg MOV CVCS Alternate Charging to RCS 2R171(2)XCV0006 2 B 5R179F05005 Loop 1C(2C) Cold Leg MOV Valve Function:

2R171(2)XCV0003 and 2R171(2)XCV0006 have an open safety function to provide 190 gpm using the RWST or 30 gpm from the BAT for RCS boron and water inventory control for safe shutdown. These valves also have a closed safety function to mitigate a high energy line break.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The operability testing (full stroke exercise) of power operated valves 2R171(2)XCV0003 and 2R171(2)XCV0006 during normal power operation requires alternating between the normal and alternate charging headers. Alternating charging headers at power would cause thermal shock and possible damage to the charging nozzles at the reactor coolant system boundary.

Alternate Testing:

Valves 2R171(2)XCV0003 and 2R171(2)XCV0006 will be tested (full stroke open and closed exercised) at each refueling outage per the requirements of ISTC-3521(e).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 107 of 136 ATTACHMENT 13: Refueling Outage Justifications Refueling Outage Justification No.: ROJ-04 System: Reactor Coolant (RC)

Code Valve ID Description Category Drawing Class Reactor Vessel Head Vent Throttle A1(2)RCHCV0601 2 B 5R149F05001 Valve Reactor Vessel Head Vent Throttle B1(2)RCHCV0602 2 B 5R149F05001 Valve Reactor Vessel Head Vent Isolation A1(2)RCHV3657A 2 B 5R209F05021 Valve Reactor Vessel Head Vent Isolation B1(2)RCHV3657B 2 B 5R209F05021 Valve Reactor Vessel Head Vent Isolation A1(2)RCHV3658A 2 B 5R209F05021 Valve Reactor Vessel Head Vent Isolation B1(2)RCHV3658B 2 B 5R209F05021 Valve Valve Function:

These valves have a closed safety function to preclude a LOCA (Regulatory Guide 1.139 requirements). They also have an open safety function to vent steam and non-condensable gases from the reactor vessel head following a LOCA and to provide a safety grade letdown flow path to the PRT allowing the plant can achieve a safe shutdown condition.

Code Required Tests:

ISTC-3510, Exercise Test Frequency, requires that each active Category A, Category B, and Category C check valve be exercised nominally every 3 months.

Basis for Deferral:

The head vent valves (hydraulic assisted, pilot-operated) and head vent block valves are normally closed during power operation. The operability testing (full stroke exercise) of these valves during normal power operation these valves exhibit a characteristic or phenomenon called burping. Burping occurs when the inboard valves are stroked open with the downstream valves closed. The downstream valves provide indications of opening during this phenomenon. This burping characteristic can continue for a period of up to 40 seconds and may over-pressurize the downstream piping.

Restrictions on head vent piping require venting to be performed at RCS pressures of less than 100 psig and less than 200 degrees Fahrenheit. This in turn mandates that the RCPs be secured to prevent seal damage. NUREG 1482, Rev. 3, Section 3.1.1.4, states that testing should be performed when RCPs can be stopped. All RCPs are not stopped unless the Reactor Coolant System is cooled and vented which is during Refueling Outages.

Alternate Testing:

These valves will be full-stroke open and closed exercised, stroke timed, and their fail-safe actuation verified at each refueling outage not to exceed once every three months per the requirements of ISTC-3521(e).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 108 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-AF01 Rev: 1 System: AF IST Group: AF01 Check Valve Groups: 1AF03 and 2AF03 Valves: 2S141TAF0119, 2S141TAF0120, 2S141TAF0121, & 2S141TAF0122 2S142TAF0119, 2S142TAF0120, 2S142TAF0121, & 2S142TAF0122 IST Functions: 1. Open to allow 500 gpm (per Technical Specification 4.7.1.2.1) of auxiliary feedwater flow to Steam Generator.

Remarks: These valves normally allow AFW flow to the SGs or FW to the SGs when utilizing the FW cross-connect during low load operations. The AFWS will be in operation during the normal operating modes of filling the steam generators, startup, shutdown, and hot standby. In addition, the AFWS is used as the normal supply of water to the steam generator during cooldown when the RCS temperature is above 350F. The Auxiliary Feedwater Storage Tank (AFST) water quality will comply with the chemistry control requirements.

Condition Failure patterns - Brittle fracture of material, and normal wear causing leakage or Monitoring improper seating.

Discussion:

Expected failure modes - Leaking or improper seating.

Past failure causes - Debris and wear on the hinge pin roll pin.

Valves see very little use and therefore will be subject to minimal wear. Engineering analysis has estimated wear life at over 300 years based on current system design.

The SOER 86-03 program has performed several tests on valves in this group using non-intrusive testing (NIT). The NIT includes steady state flow during filling operations for the Steam Generators and a closure test. Performing analysis on the steady state and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs).

Degradation in the valves cannot be quantitatively measured, however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow to the S/Gs will be indicated by the level increase in the S/G associated with the valve being tested. The close impact will be indicated by acoustic signal upon cessation of flow through the valve.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements: repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increased valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 15-year interval. Refuel interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 109 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-AF02 Rev: 1 System: AF IST Group: AF02 Check Valve Groups: 1AF02 and 2AF02 Valves: 2S141TAF0019, 2S141TAF0085, 2S141TAF0048, & 2S141TAF0065 2S142TAF0019, 2S142TAF0085, 2S142TAF0048, & 2S142TAF0065 IST Functions: 1. Open upon receipt of: A. steam generator low water level, B. low feedwater flow signal from AMSAC, or C. SI initiation signal to allow 500 gpm (per Technical Specification 4.7.1.2.1) flow to Steam Generator.

NOTE: The ESF actuation signal allows the stop check valve to function normally through the self-actuating design of the check valve. Operation of the motor operator function is not required for the valve to fulfill its open safety function.

2. Close (remote manual) for Steam Generator isolation in response to SGTR, FWLB, and MSLB.

Remarks: Normally closed stop check valve. There are 3 check valves in the line, affording much redundancy for the closing function. There are 4 available flowpaths leading to 4 steam generators. 2 of 4 trains required for immediate response. 1 train is required for long term decay heat removal.

Condition Failure patterns - Leaking Monitoring Expected failure modes - Leaking, or improper seating Discussion:

Past failure causes -Normal wear These valves are currently being tested in the open direction during system testing at cold shutdown. Closure testing is required to verify bi-directional functionality of these valves.

Acoustic testing is an equal test if Computed radiography is not performed.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements: repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increased valve looseness (rattles and rubs) will determine need to open and inspect the check valves. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Frequency Non-intrusive testing at 15-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 110 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-AF07 Rev: 1 System: AF IST Group: AF07 Check Valve Groups: 1AF01 and 2AF01 Valves: 3S141TAF0011, 3S141TAF0036, 3S141TAF0058, & 3S141TAF0091 3S142TAF0011, 3S142TAF0036, 3S142TAF0058, & 3S142TAF0091 IST Functions: 1. Open to allow a minimum flow of 100 - 130 gpm (per Aux Feedwater DBD 4.1.2.1) from the AFW pump in recirculation to the AFST and a flow of 550 - 640 gpm (per Aux Feedwater DBD 4.1.2.2) from the AFW pump to the steam generator.

Remarks:: There are 4 available flowpaths leading to 4 steam generators. There is high redundancy of flowpaths. 2 of 4 trains required for immediate response. 1 train is required for long term decay heat removal.

Condition Failure patterns - Leaking, stuck open, stuck closed, stuck mid position and binding.

Monitorin Expected failure modes - Stuck open/closed/mid-position or degraded seats (leaking).

g Past failure causes - Debris, corrosion, improper water chemistry, not seating due to Discussion wear (guides and seats), wear in the pilot, and degraded seats.

These valves are currently being tested in the open direction during system/pump testing. Closure testing is required to verify bi-directional functionality of these valves.

Performing analysis on the steady state and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured, however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow to the S/Gs will be indicated by the level increase in the S/G associated with the valve being tested. The close impact will be indicated by acoustic signal upon cessation of flow through the valve.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state

flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increased valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Frequency Non-intrusive testing at 15-year interval. Refuel interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 111 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-AF08 Rev: 1 System: AF IST Group: AF08 Check Valve Groups: 1MS02 and 2MS02 Valves: 2S141TMS0143, 2S142TMS0143 IST Functions 1. Open (normally open) to allow steam flow to the AFW pump turbine trip/throttle valve in the event of a Lo-Lo S/G water level, SI initiation signal, or an AMSAC signal. The open self-actuating portion of this valve is a passive function since it is normally held open by the motor function of the valve and receives a confirmatory open signal from ESF Actuation.

2. Close (remote manual) to prevent a leak path following a SGTR.

Remarks Valve is normally open.

There are 4 available flowpaths leading to 4 steam generators. 2 of 4 trains required for immediate response. 1 train is required for long term decay heat removal. Pump provides decay heat removal during SBO.

Condition Failure patterns - Leaking.

Monitoring Expected failure modes - Leaking, or improper seating. Past Discussion failure causes - Normal wear.

These valves are currently being tested in the open direction during system/pump testing. Closure testing is required to verify bi-directional functionality of these valves.

Performing analysis on the steady state and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured, however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow to the S/Gs will be indicated by the level increase in the S/G associated with the valve being tested. The close impact will be indicated by acoustic signal upon cessation of flow through the valve.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increased valve looseness (rattles and rubs) will determine need to open and inspect the check valves. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Frequency Quarterly interval for open verify.

Close verify is performed during Appendix II test at 10-year interval.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 112 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CC26 Rev: 1 System: CC IST Group: CC26 Check Valve Groups: 1CC02 and 2CC02 Valves 3R201TCC0051, 3R201TCC0131, & 3R201TCC0191 3R201TCC0051, 3R201TCC0131, & 3R201TCC0191 IST Functions 1. Close on reverse flow to ensure CCW Train separation.

2. Open to provide return flow path from the RCP thermal barrier heat exchangers, bearing lube oil coolers, and motor air coolers to the CCW Train A pump if it is operating for accident conditions per DBD 4.1.4.5.

Remarks The closing function of these valves is redundant to the function of upstream MOVs.

Check valves are more reliable to close. In the case of flow diversion, there are supply MOVs and supply check valves, so the plant would isolate the supply. In the case of the opening function, there are 3 trains. STP typically runs one train, therefore, the plant only requires one set of valves).

Condition Failure patterns - Most of these failures were due to corrosion and debris in the system Monitoring with dirty water causing leakage. Other failures included wearing of the hinge pin (in Discussion most cases normal wear), corrosion or damaged seating, and sticking open.

Expected failure modes - Leaking, improper seating, and stuck open.

Past failure causes - Debris, corrosion, broken springs & damaged seats.

The SOER 86-03 program has performed many tests on valves in this group using non-intrusive testing (NIT). The NIT includes steady state flow during normal system operation and a closure test. Performing analysis on the steady state and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured, however, the increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow through the check valve will be indicated by the pump operation.

The close impact will be detected by acoustic signal upon cessation of flow through the valve.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements: repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 12-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 113 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CC27 Rev: 1 System: CC IST Group: CC27 Check Valve Groups: 1CC04 and 2CC04 Valves: 3R201TCC0311, 3R201TCC0313, & 3R201TCC0315 3R202TCC0311, 3R202TCC0313, & 3R202TCC0315 IST Functions 1. Open to provide CCW flow for CVCS and SFPCCS equipment.

Remarks The closing function of these valves is redundant to the function of upstream MOVs.

Check valves are more reliable to close. In the case of flow diversion, there are supply MOVs and supply check valves, so the plant would isolate the supply. In the case of the opening function, there are 3 trains. STP typically runs one train therefore, the plant only requires one set of valves).

Condition Failure patterns - Most of these failures were due to corrosion and debris in the system Monitoring with dirty water causing leakage. Other failures included wearing of the hinge pin (in Discussion most cases normal wear), corrosion or damaged seating, and sticking open.

Expected failure modes - Leaking, improper seating, and stuck open.

Past failure causes - Debris, corrosion, broken springs & damaged seats.

The SOER 86-03 program has performed several tests on valves in this group using non-intrusive testing (NIT). The NIT includes steady state flow during CCW pump operation and a closure test when pumps are secured. Performing analysis on the steady state and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs).

Degradation in the valves cannot be quantitatively measured however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow through the valve will result from pump operation. The close impact will be detected by acoustic signal upon cessation of flow through the valve.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements: repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 12-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 114 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CC29 Rev: 0 System: CC IST Group: CC29 Check Valve Groups: 1CC01 and 2CC01 Valves 2R201TCC0013, 2R201TCC0123, 2R201TCC0183 2R202TCC0013, 2R202TCC0123, 2R202TCC0183 IST Functions 1. Open to provide flow path for CCW through RHR pump 1(2)A seal cooler and RHR 1(2)A heat exchanger (4906 gpm required per DBD Table T-7, Minimum or Maximum Safeguards).

2. Close and leak tight (CAT A) in accordance with UFSAR commitment (Section 6.2.6.3 and Figure 6.2.4-1, Sheet 35) to provide containment integrity.

Remarks There are 3 trains of flow paths available, only 1 train is required. CC10 (MOVs in line) are ranked low by GQA. MOVs in line provide redundant closing function.

Condition Failure patterns - Failures of this type valves includes worn seats, debris, sticking Monitoring open, and excessive wear on the seats.

Discussion Expected failure modes - Leaking, improper seating, and stuck open.

Past failure causes - Debris, corrosion, broken springs & damaged seats.

Presently, these valves are being tested under the Appendix J local leak rate test (LLRT) program which will provide the first indication that the valve is degrading.

Open flow verification can be performed during normal operations.

Open flow verification and trending leakage (LLRT) can be used to monitor the condition of these valves and establish the bi-directional functionality. The frequency of the check valve condition monitoring testing can be stepped out to code allowable limits based on trending of the leakage rate during the LLRT. Frequency may be limited by the leakage testing requirements for Appendix J. These valves will be scheduled as independent groups to comply with the Appendix J Program requirements.

Testing CM Testing will take credit for normal operation for an open flow verification and Requirements trend leakage data from the LLRT for monitoring the condition of the valve and verification of bi-directional functionality.

Frequency Based on good past performance results, test frequency maintained at Appendix J Option B frequency pursuant to NUREG-1482, Rev. 3, Section 4.4.7.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 115 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CV06 Rev: 1 System: CV IST Group: CV06 Check Valve Groups: 1CV04 and 2CV04 Valves 1R171TCV0036A, 1R171TCV0036B, 1R171TCV0036C, & 1R171TCV0036D 1R172TCV0036A, 1R172TCV0036B, 1R172TCV0036C, & 1R172TCV0036D 1R171TCV0037A, 1R171TCV0037B, 1R171TCV0037C, & 1R171TCV0037D 1R172TCV0037A, 1R172TCV0037B, 1R172TCV0037C, & 1R172TCV0037D IST Functions 1. Open to provide 8 gpm of alternate RCS boration for safe shutdown.

2. Close to maintain the RCS pressure boundary integrity in the event of a seal line rupture.

Remarks Valve is normally open (essentially a passive function). Effectively, the valve is tested during the course of normal operation (i.e., there are no hidden failures). The valve closes when flow stops (no automatic signal) during phase A. At phase B, RCPs are not credited (large LOCA scenario). Redundant closing function provided by other check valve in series.

Condition Failure patterns - Leaking, debris, wearing out, and misapplied.

Monitoring Discussion Expected failure modes - Corrosion and debris in the system with dirty water causing leakage. Other failures included wearing of the hinge pin (in most cases normal wear),

corrosion or damaged seating, and sticking open.

Past failure causes - Debris, worn internals, manufacture defects, poor design, misapplication, improper maintenance, improper design, and corrosion.

The SOER 86-03 program has performed many tests on valves in this group using non-intrusive testing (NIT). The NIT testing includes steady state during flow to the reactor coolant pump seal package. Analysis of the steady state data and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow to the RCP seals is indicated in the Control room. The close impact will be indicated by acoustic signal upon cessation of flow through the valve. Valves will be divided into two four-valve subgroups and scheduled so that both valves in one train are tested together. Subgroup A - CV36s, Subgroup B - CV37s.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent repeatable Requirements steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence.

Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 15-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 116 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CV07 Rev: 1 System: CV IST Group: CV07 Check Valve Groups: 1CV03 and 2CV03 Valves: 2R171TCV0034A, 2R171TCV0034B, 2R171TCV0034C, 2R171TCV0034D 2R172TCV0034A, 2R172TCV0034B, 2R172TCV0034C, 2R172TCV0034D IST Functions 1. Close and leak tight (CAT A) to maintain containment integrity and to provide isolation in the event of a seal line rupture.

2. Open to provide 8 gpm of alternate RCS boration for safe shutdown (CVC DBD 3.2.2.1 4).

Remarks Close and leak tight (CAT A) to maintain containment integrity and to provide isolation in the event of a seal line rupture. Open to provide alternate RCS boration for safe shutdown. Valve is normally open (essentially a passive function).

Effectively, the valve is tested during the course of normal operation (I.e., there are no hidden failures). The valve closes when flow stops (no automatic signal) during phase A. At phase B, RCPs are not credited (large LOCA scenario). Redundant closing function performed by outboard MOV.

Condition Failure patterns - Leaking, debris, wearing out, and miss applied.

Monitoring Expected failure modes - Corrosion and debris in the system with dirty water causing Discussion leakage. Other failures included wearing of the hinge pin (in most cases normal wear),

corrosion or damaged seating, and sticking open.

Past failure causes - Debris, worn internals, manufacture defects, poor design, miss-application, improper maintenance, improper design, and corrosion.

The SOER 86-03 program has performed many tests on valves in this group using non-intrusive testing (NIT). The NIT testing includes steady state during flow to the reactor coolant pump seal package. Analysis of the steady state data and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow to the RCP seals is indicated in the Control room. The close impact will be indicated by acoustic signal upon cessation of flow through the valve.

Testing Analysis of the acoustic signals at the steady state flow condition will be used to Requirements monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence.

Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 15-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 117 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CV10 Rev: 1 System: CV IST Group: CV10 Check Valve Groups: 1CV09 and 2CV09 Valves: 1R171TCV0009, 1R172TCV0009 IST Functions 1. Remain closed to preserve the integrity of the Reactor Coolant System pressure boundary.

2. Open to supply auxiliary spray to the pressurizer to collapse the steam bubble and cool the pressurizer during the final stages of plant cooldown when the reactor coolant pumps are shutdown and the normal spray is no longer available and to stabilize RCS pressure following SGTR.

Remarks Remain closed to preserve the integrity of the Reactor Coolant System pressure boundary. Open to supply auxiliary spray to the pressurizer to collapse the steam bubble and cool the pressurizer during the final stages of plant cooldown when the reactor coolant pumps are shutdown and the normal spray is no longer available or to stabilize RCS pressure following SGTR. Check valve is normally closed and reliable.

Upstream AOV provides redundant closing capability.

Condition Failure patterns - Leaking, debris, wearing out, and miss applied.

Monitoring Discussion Expected failure modes - Corrosion and debris in the system with dirty water causing leakage. Other failures included wearing of the hinge pin (in most cases normal wear),

corrosion or damaged seating, and sticking open.

Past failure causes - Debris, worn internals, manufacture defects, poor design, miss-application, improper maintenance, improper design, and corrosion.

These valves are currently being tested in the open direction during system testing at cold shutdown. Closure testing is required to verify bi-directional functionality of these valves.

Computerized radiography provides clear pictures of the valve internals. The condition of the valve can be evaluated without disassembly. The amount of misalignment of the valve disc on the seat as well as actual measurements of valve internals to determine wear rates will result in the early detection of the onset of degradation in these valves. Preventive maintenance can then be scheduled and performed prior to failure. This inspection process can also verify that the valves are in the closed position to satisfy the bi-directional functionality testing requirement.

Testing Perform inspection of these valves using computerized radiography. Flow through the Requirements valve during system testing will be credited on the same frequency as the inspection.

These testing activities will confirm the bi-directional functionality of these valves.

Frequency Non-intrusive testing (computerized radiography) at 10-year interval. Refuel interval for open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 118 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CV37 Rev: 1 System: CV IST Group: CV37 Check Valve Groups: 1CV20 and 2CV20 Valves: 2R171XCV0670, 2R172XCV0670 IST Functions 1. Open to provide charging RCS boration control flow path from discharge of centrifugal charging pump. A flow rate of 30 gpm is required per Technical Requirements Manual 4.1.2.2 d and 190 gpm if suction is from the RWST per CR 99-1380-3.

2. Close to prevent diversion of flow due to HELB in charging header with flow path established through valve HCV-206.

Remarks Open to provide RCS boration control flow path from discharge of centrifugal charging pumps. Close to prevent diversion of flow due to HELB in charging header with flow path established through valve HCV-0206. This valve is normally open. If this valve fails to close in the event of a HELB, the normal charging flowpaths are lost. The primary charging flowpath is isolated on safety injection.

Condition Failure patterns - Common failures include erosion and leakage due to seat Monitoring degradation.

Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Failure causes include leaking due to erosion and normal wear.

These valves are currently being tested in the open direction during normal operation or system testing. Closure testing is required to verify bi-directional functionality of these valves.

Computerized radiography provides clear pictures of the valve internals. The condition of the valve can be evaluated without disassembly. The amount of misalignment of the valve disc on the seat as well as actual measurements of valve internals to determine wear rates will result in the early detection of the onset of degradation in these valves. Preventive maintenance can then be scheduled and performed prior to failure. This inspection process can also verify that the valves are in the closed position to satisfy the bi-directional functionality testing requirement.

Acoustic testing may be substituted as an equal testing method.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements: repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Frequency Non-intrusive testing (acoustic) at 9-year interval. Quarterly interval for open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 119 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CV38 Rev: 1 System: CV IST Group: CV38 Check Valve Groups: 1CV01 and 2CV01, 1CV02 and 2CV02 Valves 1R171XCV0001, 1R171XCV0002, 1R171XCV0004, 1R171XCV0005 1R172XCV0001, 1R172XCV0002, 1R172XCV0004, 1R172XCV0005 IST Functions 1. Close to maintain RCS pressure boundary isolation in the event of a Class 2 CVCS line break.

2. Open to provide 30 gpm for RCS boron and water inventory (charging) control for safe shutdown per Technical Specification 4.1.2.2 d. Required flowrate is 190 gpm for RWST as water source per CR 99-1380-3.

Remarks Two check valves in series provide redundant closing capability. Check valves are reliable to perform their function.

Redundant flowpaths provided by parallel injection lines.

Condition Failure patterns - Common failures include erosion and leakage due to seat Monitoring degradation.

Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Common failures include erosion and leakage due to seat degradation.

The SOER 86-03 program has performed many tests on valves in this group using non-intrusive testing (NIT). The NIT testing includes steady state flow during charging operations. Performing analysis on the steady state and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured, however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since charging flow is indicated in the Control Room. The close impact will be indicated by acoustic signal upon cessation of flow through the valve.

Grouping the valves should be done to allow for train specific testing. CV-1 should be grouped with CV-4 and CV-2 should be grouped with CV-5. Valves will be divided into two two-valve subgroups and scheduled so that both valves in one train are tested together. Subgroup A - CV0001,4; Subgroup B - CV0002,5.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 12-year interval. Refuel interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 6 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 120 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-CV40 Rev: 1 System: CV IST Group: CV40 Check Valve Groups: 1CV11 and 2CV11 Valves: 2R171XCV0026, 2R172XCV0026 IST Functions 1. Close and leak tight (CAT A) to maintain containment integrity.

2. Open to provide 30 gpm for RCS boron and water inventory (charging) control for safe shutdown per Technical Specification 4.1.2.2 d. Required flowrate is 190 gpm for RWST as water source per CR 99-1380-3.

Remarks Upstream MOV performs redundant closing function. Check valve is normally open and highly reliable.

Condition Failure patterns - Common failures include erosion and leakage due to seat Monitoring degradation.

Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Failure causes include leaking due to erosion and normal wear.

Perform open verification during the non-intrusive (acoustic) test at a consistent repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 10-year interval. Quarterly interval for open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 121 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-EW08 Rev: 1 System: EW IST Group: EW0 8 Check Valve Groups: 1EW01 and 2EW01 Valves: 3R281TEW0006, 3R281TEW0042, & 3R281TEW0079 3R282TEW0006, 3R282TEW0042, & 3R282TEW0079 IST Functions: 1. Open to allow ECW Pump discharge flow to components cooled by ECW. ECW Pump design flow per DBD is 18,290 gpm per CR 98-19892-3 and CR 99-1380-2.

Remarks: Open to allow ECW Pump discharge flow to components cooled by ECW. This system serves as the ultimate heat sink. Two of these valves (in 2 of the trains) are open all of the time. There are 3 independent trains. Any 1 train can provide the necessary cooling.

Condition Failure patterns - Failures of this type valves includes worn seats, debris, sticking Monitoring open, and excessive wear on the seats.

Discussion:

Expected failure modes - Leaking, or improper seating.

Past failure causes - Debris, corrosion, broken springs & damaged seats.

Currently these valves are verified to perform open safety function during the ECW pump inservice test. Non-intrusive testing is performed periodically to evaluate condition of the valve per the SOER 86-03 reliability program.

Based on review of wear rates for the aluminum bronze material in the ECW system, a disassembly and inspection of one valve per refueling outage has been initiated. The inspections of these valves have found that there is wear inside the hinge and where the hinge pin is connected to the valve body. Additionally, there is corrosion on the outside of the hinge from the brackish water and the close proximity of the pump discharge resulting in turbulent flow conditions.

These check valves should continue to be monitored closely until these degradation mechanisms are better understood and controlled. By performing a disassembly on one valve in the group every 18 months will provide good baseline information and allow for good preventive maintenance for these valves. NIT (acoustic testing) should be performed on all the valves in the group every 18 months to establish a baseline for each valve following rebuilds. NIT monitoring will ensure that degradation in any of the valves will be identified so that preventive maintenance can be performed before failure.

Testing The CM Testing will take credit for disassembly for the bi-directional test requirements Requirements: and for trending the valves condition. In addition, NIT will be performed for making sure that early degradations do not occur.

Frequency Open and inspect at 54-month interval. Stagger to perform a disassembly on one valve in the group about every 18 months. Based on testing results, the frequency of the testing can be stepped out farther not to exceed code 12-year limit, one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 122 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-FP01 Rev: 0 System: FP IST Group: FP01 Check Valve Groups: 1FP01 and 2FP01 Valves: 2Q271TFP0943, 2Q272TFP0943 IST Functions: 1. Close and leak tight (CAT A) to maintain containment integrity.

Remarks Normally closed. Redundant and diverse closing capability provided by other valve in series.

Condition Failure patterns - Leakage or sticking open.

Monitoring Discussion Expected failure modes - Leaking, or improper seating.

Past failure causes - Debris, corrosion, damaged seats, and worn internals.

Presently, these valves are being tested under the Appendix J local leak rate test (LLRT) program which will provide the first indication that the valve is degrading.

Open flow verification can be verified by adding steps to the LLRT procedure to exercise the valve to the open position.

Open exercising and trending leakage (LLRT) can be used to monitor the condition of these valves and establish the bi-directional functionality. The frequency of the check valve condition monitoring testing can be stepped out to code allowable limits based on trending of the leakage rate during the LLRT. Frequency may be limited by the leakage testing requirements for Appendix J.

Testing CM Testing will trend leakage data from the LLRT for monitoring the condition of the Requirements valve. The Appendix J LLRT procedure will also include steps to exercise the valve to the open position to verify bi-directional functionality.

Frequency Based on good past performance results, test frequency maintained at Appendix J Option B frequency pursuant to NUREG-1482, Rev. 3, Section 4.4.7.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 123 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-RH05 Rev: 1 System: RH IST Group: RH05 Check Valve Groups: 1RH04 and 2RH04 Valves 2R161XRH0068A, 2R161XRH0068B, & 2R161XRH0068C 2R162XRH0068A, 2R162XRH0068B, & 2R162XRH0068C IST Functions 1. Open to provide minimum flow path during RHR pump start.

2. Open to limit the Component Cooling Water System temperature to less than its maximum value of 1200F for Appendix R FHA.

3. Open to limit the RCS cooldown rate to the maximum allowable value of 1000F/hour for Appendix R FHA.

Remarks Open to provide minimum flow path during RHR pump start.

Condition Failure patterns - Common failures include erosion and leakage due to seat Monitoring degradation.

Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Common failures include erosion and leakage due to seat degradation.

These valves are currently being tested in the open direction during system/pump testing. Closure testing is required to verify bi-directional functionality of these valves.

Computerized radiography provides clear pictures of the valve internals. The condition of the valve can be evaluated without disassembly. The amount of misalignment of the valve disc on the seat as well as actual measurements of valve internals to determine wear rates will result in the early detection of the onset of degradation in these valves. Preventive maintenance can then be scheduled and performed prior to failure. This inspection process can also verify that the valves are in the closed position to satisfy the bi-directional functionality testing requirement.

Testing Acoustic open Perform testingverification may be substituted as non-intrusive during the an equal testing method.test at a consistent (acoustic)

Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Frequency Non-intrusive testing at 12-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 124 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-RH06 Rev: 1 System: RH IST Group: RH06 Check Valve Groups: 1RH03 and 2RH03 Valves: 2R161XRH0065A, 2R161XRH0065B, & 2R161XRH0065C 2R162XRH0065A, 2R162XRH0065B, & 2R162XRH0065C IST Functions: 1. Open to allow a safety grade cold shutdown of the RCS using RHR following a SBLOCA, SGTR, MSLB, or FWLB accident condition. A flow rate of 3,000 gpm is required per paragraph 4A.1.2.1 of the DBD.

Remarks: Normally operate two trains of RHR during cooldown. Only one train is required.

Valves open to allow flow to occur during RHR cooldown following SBLOCA, MSLB, FWLB, or in event of a fire. Redundancy of function provided by other trains.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion: Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

These valves are currently being tested in the open direction during system/pump testing. Closure testing is required to verify bi-directional functionality of these valves.

Computerized radiography provides clear pictures of the valve internals. The condition of the valve can be evaluated without disassembly. The amount of misalignment of the valve disc on the seat as well as actual measurements of valve internals to determine wear rates will result in the early detection of the onset of degradation in these valves. Preventive maintenance can then be scheduled and performed prior to failure. This inspection process can also verify that the valves are in the closed position to satisfy the bi-directional functionality testing requirement.

Acoustic testing may be substituted as an equal testing method.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements: repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Frequency Non-intrusive testing at 12-year interval. Quarterly interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 125 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-RH07 Rev: 0 System: RH IST Group: RH07 Check Valve Groups: 1RH01 and 2RH01 Valves 1R161XRH0020A, 1R161XRH0020B, & 1R161XRH0020C 1R162XRH0020A, 1R162XRH0020B, & 1R162XRH0020C IST Functions 1. Close and leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

2. Open to provide sump recirculation flow to the RCS hot leg from LHSI for hot-leg recirculation.

Remarks There are 2 check valves in series to provide redundant ability to maintain RCS pressure boundary. Closing function is backed up by upstream valves. Valves are closed and leak tested prior to startup.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing and refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during operation or other testing will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements continuing to perform the leak (PIV) test per TS 4.4.6.2.2. The open test will be performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refuel interval for both closed leakage test and open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 126 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-RH08 Rev: 0 System: RH IST Group: RH08 Check Valve Groups: 1RH02 and 2RH02 Valves: 1R161XRH0032A, 1R161XRH0032B, & 1R161XRH0032C 1R162XRH0032A, 1R162XRH0032B, & 1R162XRH0032C IST Functions: 1. Close and leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

2. Open to allow a safety grade cold shutdown of the RCS using RHR following a SBLOCA, SGTR, MSLB, or FWLB accident condition.

3. Open to provide cold-leg injection during ECCS injection and recirculation phases.

Remarks:: NONE Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion: Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing and refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during operation or other testing will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements: continuing to perform the leak (PIV) test per TS 4.4.6.2.2. The open test will be performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refuel interval for both closed leakage test and open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 127 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SD01 Rev: 0 System: SD IST Group: SD01 Check Valve Groups: 1SD01 and 2SD01 Valves: 3Q151XSD0003A, 3Q151XSD0003B, & 3Q151XSD0003C 3Q152XSD0003A, 3Q152XSD0003B, & 3Q152XSD0003C IST Functions: 1. Close to prevent the rapid depressurization of the air receiver in case of a pipe rupture upstream of the check valve.

Remarks:: Each diesel has two receivers; either receiver can start the diesel. One of three diesels is required to supply power.

Condition Failure patterns - Debris, corrosion, and rust caused a majority of the failures.

Monitoring Discussion: Expected failure modes - Leaking, or improper seating.

Past failure causes - Debris, worn internals, and misapplication.

Currently testing for these valves is verification that the pressure in the air receiver tanks does not decay after the compressor is secured. This test verifies that the check is closed. Recording the rate of pressure decay can provide a means to trend valve degradation such that the valve disc is not aligning to the valve seat. The check valve opens when the compressor is started to fill the receiver tank. These two activities can be performed to verify the bi-directional functionality of these valves.

Testing The CM Testing will perform open flow verification during compressor starts and Requirements: trend pressure decay rate data with valve in the closed position to monitor the condition of the check valves. These two activities will verify the bi-directional functionality of these valves.

Frequency Pressure decay rate test and flow open verification test performed quarterly. Non-intrusive testing for condition monitoring performed every 364 weeks, 7 years. Based on testing results, the frequency of the testing can be stepped out not to exceed code allowable limit of 12 years.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 128 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SD02 Rev: 0 System: SD IST Group: SD02 Check Valve Groups: 1SD02 and 2SD02 Valves: 3Q151XSD0004A, 3Q151XSD0004B, & 3Q151XSD0004C 3Q152XSD0004A, 3Q152XSD0004B, & 3Q152XSD0004C IST Functions 1. Close to prevent the rapid depressurization of the air receiver in case of a pipe rupture upstream of the check valve.

Remarks Each diesel has two receivers; either receiver can start the diesel. One of three diesels is required to supply power.

Condition Failure patterns - Debris, corrosion, and rust caused a majority of the failures.

Monitoring Discussion Expected failure modes - Leaking, or improper seating.

Past failure causes - Debris, worn internals, and misapplication.

Currently testing for these valves is verification that the pressure in the air receiver tanks does not decay after the compressor is secured. This test verifies that the check is closed. Recording the rate of pressure decay can provide a means to trend valve degradation such that the valve disc is not aligning to the valve seat. The check valve opens when the compressor is started to fill the receiver tank. These two activities can be performed to verify the bi-directional functionality of these valves.

Testing The CM Testing will perform open flow verification during compressor starts and Requirements trend pressure decay rate data with valve in the closed position to monitor the condition of the check valves. These two activities will verify the bi-directional functionality of these valves.

Frequency Pressure decay rate test and flow open verification test performed quarterly. Non-intrusive testing for condition monitoring performed every 364 weeks, 7 years. Based on testing results, the frequency of the testing can be stepped out not to exceed code allowable limit of 12 years.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 129 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SI18 Rev: 1 System: SI IST Group: SI18 Check Valve Groups: 1SI02 and 2SI02 Valves 2N121XSI0005A, 2N121XSI0005B, & 2N121XSI0005C 2N122XSI0005A, 2N122XSI0005B, & 2N122XSI0005C IST Functions 1. Open to inject borated water from either the RWST or the containment sump to the RCS cold legs during the cold leg injection phase of safety injection.

2. Open to recirculate borated water from the containment sump to the RCS hot legs during the hot leg recirculation phase of safety injection.

3. Close and be leak tight (CAT A) to provide containment integrity.

Remarks There are 2 check valves in series to provide redundant ability to strengthen pressure boundary to minimize LERF impacts.

Open function is required for feed and bleed in addition to standard LOCA response.

Condition Failure patterns - Leakage due to normal wear.

Monitoring Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Failure causes include leaking due to normal wear.

Perform open verification during the non-intrusive (acoustic) test at a consistent repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality is satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 12-year interval. Refueling interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 130 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SI19 Rev: 0 System: SI IST Group: SI19 Check Valve Groups: 1SI03 and 2SI03 Valves 1N121XSI0007A, 1N121XSI0007B, & 1N121XSI0007C 1N122XSI0007A, 1N122XSI0007B, & 1N122XSI0007C IST Functions 1. Open to inject borated water from either the RWST or the containment sump to the RCS cold legs during the cold leg injection phase of safety injection.

2. Close to prevent the diversion of flow from the accumulator or from the LHSI pump in the event that the corresponding HHSI pump is not running.

3. Close and be leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

Remarks Close to prevent ISLOCA. There are 2 check valves in series to provide redundant ability to maintain pressure boundary.

Open function is required for feed and bleed in addition to standard LOCA response.

These valves are closed and leak tested prior to startup.

Condition Failure patterns - Leakage due to normal wear.

Monitoring Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Failure causes include leaking due to normal wear.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing and refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during operation or other testing will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements continuing to perform the leak (PIV) test per TS 4.4.6.2.2. The open test is performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refuel interval for both closed leakage test and open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 131 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SI20 Rev: 0 System: SI IST Group: SI20 Check Valve Groups: 1SI04 and 2SI04 Valves: 1N121XSI0009A, 1N121XSI0009B, & 1N121XSI0009C 1N122XSI0009A, 1N122XSI0009B, & 1N122XSI0009C IST Functions: 1. Open to recirculate borated water from the containment sump to the RCS hot legs during the hot leg recirculation phase of safety injection.

2. Close to prevent the diversion of flow from an LHSI pump in the event that the corresponding HHSI pump is not running during the hot leg recirculation phase.

3. Close and leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

Remarks There are 2 check valves in series to provide redundant ability to maintain RCS pressure boundary. Closing function is backed up by upstream valves. Valves are closed and leak tested prior to startup.

Condition Failure patterns - Leakage due to normal wear.

Monitoring Discussion Expected failure modes - There are no common failure modes to this valve.

Past failure causes - Failure causes include leaking due to normal wear.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing and refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during operation or other testing will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements continuing to perform the leak (PIV) test per TS 4.4.6.2.2. The open test is performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refuel interval for both closed leakage test and open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 132 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SI21 Rev: 1 System: SI IST Group: SI21 Check Valve Groups: 1SI06 and 2SI06 Valves: 2N121XSI0030A, 2N121XSI0030B, & 2N121XSI0030C 2N122XSI0030A, 2N122XSI0030B, & 2N122XSI0030C IST Functions 1. Open to inject borated water from either the RWST or the containment sump to the RCS cold legs during the cold leg injection phase of safety injection.

2. Open to recirculate borated water from the containment sump to the RCS hot legs during the hot leg recirculation phase of safety injection.

3. Close to prevent backflow from the RHR system during post-accident recovery operations.

4. Close and be leak tight (CAT A) to maintain containment integrity.

Remarks Close to prevent ISLOCA.

There are 3 check valves in series to provide redundant ability to strengthen pressure boundary. This valve may have LERF impacts.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Perform open verification during the non-intrusive (acoustic) test at a consistent repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves. As an alternative to the non-intrusive acoustic test, inspection of these valves may be performed using computerized radiography. Flow through the valve during normal operation or system/pump testing will be credited on the same frequency as the inspection. These testing activities will confirm the bi-directional functionality of these valves.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 12-year interval. Refueling interval for open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 133 of 136 ATTACHMENT 14: Condition Monitoring Plans CM-SI22 Rev: 0 System: SI IST Group: SI22 Check Valve Groups: 1SI05 and 2SI05 Valves: 1N121XSI0010A, 1N121XSI0010B, & 1N121XSI0010C 1N122XSI0010A, 1N122XSI0010B, & 1N122XSI0010C IST Functions: 1. Open to recirculate borated water from the containment sump to the RCS hot legs during the hot leg recirculation phase of safety injection.

2. Close to prevent RCS backflow into the low-pressure SI systems.

3. Close and leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

Remarks:: There are 2 check valves in series to provide redundant ability to maintain RCS pressure boundary. Closing function is backed up by upstream valves. Valves are closed and leak tested prior to startup. Common path for high head and low head injection.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion: Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing and refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during operation or other testing will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements: continuing to perform the leak (PIV) test per 4.4.6.2.2. The open test will be performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refueling interval for both closed leakage test and open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 134 of 136 ATTACHMENT 14: Condition Monitoring Plans CM- SI23 Rev: 0 System: SI IST Group: SI23 Check Valve Groups: 1SI07 and 2SI07 Valves: 1N121XSI0038A, 1N121XSI0038B, & 1N121XSI0038C 1N122XSI0038A, 1N122XSI0038B, & 1N122XSI0038C IST Functions: 1. Open when the RCS pressure falls below the accumulator pressure to force borated water into the RCS cold legs.

2. Close to prevent backflow from the RCS into the low-pressure SI system.

3. Close and be leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

Remarks:: There are 2 check valves in series to provide redundant ability to maintain RCS pressure boundary. Closing function is backed up by upstream valves. Valves are closed and leak tested prior to startup. Common path for accumulator, high head, and low head injection.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion: Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing and refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during operation or other testing will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements: continuing to perform the leak (PIV) test per 4.4.6.2.2. The open test will be performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refueling interval for both closed leakage test and open verify.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 135 of 136 ATTACHMENT 14: Condition Monitoring Plans CM- SI25 Rev: 1 System: SI IST Group: SI25 Check Valve Groups: 1SI01 and 2SI01 Valves: 2N121XSI0002A, 2N121XSI0002B, & 2N121XSI0002C 2N122XSI0002A, 2N122XSI0002B, & 2N122XSI0002C IST Functions 1. Open to provide a source of borated water to the suction of the LHSI, HHSI and CS pumps during the injection mode of accident mitigation.

2. Close to prevent backflow to the RWST when containment sump isolation valves are opened during switchover from the injection phase to the cold leg recirculation mode before SI-MOV001A, B, and C are closed.

Remarks Active for both directions. Considered to be the primary isolation. MOV provides the same closing function. If the valve fails to open, the plant loses 1/3 of SI capacity.

Procedurally, the plant needs 1 out of 3 trains for success.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Valves see very little use and therefore will be subject to minimal wear. Valves are exercised only during surveillance testing on SI pumps.

The SOER 86-03 program has performed many tests on valves in this group using non-intrusive testing (NIT). The NIT testing includes steady state flow during SI pump inservice testing. Analysis on the steady state data and closure can determine the health of the valve. Analysis of the acoustic signals will include a comparison with previous testing results to evaluate a change in the quantity and magnitude of metal to metal impacts (rattles and rubs). Degradation in the valves cannot be quantitatively measured however, the presence of an increase in looseness in the valves will be a leading indicator to allow disassembly and inspection prior to valve failure.

The bi-directional functionality of the valves will be shown during the non-intrusive testing since flow through the valve will be indicated by SI pump flow rate. The close impact will be detected by acoustic signal upon cessation of flow through the valve.

Testing Perform open verification during the non-intrusive (acoustic) test at a consistent Requirements repeatable steady state flow rate. Analysis of the acoustic signals at the steady state flow condition will be used to monitor the condition of the valves. A closure test will also be performed during the NIT. Bi-directional functionality will be satisfied during the test sequence. Indication of increase valve looseness (rattles and rubs) will determine need to open and inspect the check valves.

Frequency Non-intrusive testing at 12-year interval for both close test and open verify.

Non-intrusive testing tests shall be performed on one valve in the subgroup at least every 4.5 years per 50.55a(b)(3)(iv), Check valves (Appendix II).

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION Revision 18 Unit 1 and 2 Pump and Valve Inservice Test Plan Page 136 of 136 ATTACHMENT 14: Condition Monitoring Plans CM- SI27 Rev: 0 System: SI IST Group: SI27 Check Valve Groups: 1SI08 and 2SI08 Valves 1N121XSI0046A, 1N121XSI0046B, & 1N121XSI0046C 1N122XSI0046A, 1N122XSI0046B, & 1N122XSI0046C IST Functions 1. Open when the RCS pressure falls below the accumulator pressure to force borated water into the RCS cold legs.

2. Close to prevent backflow from the RCS into the low-pressure SI system.

3. Close and be leak tight (CAT A) to maintain RCS pressure boundary, GDC 14 (PIV).

Remarks There are 2 check valves in series to provide redundant ability to maintain RCS pressure boundary. Valves are closed and leak tested prior to startup.

Condition Failure patterns - Disc Seat leakage, Corrosion, erosion, seat leakage.

Monitoring Discussion Expected failure modes - Leaking or improper seating.

Past failure causes - Normal wear, corrosion, debris, or not seating fully at lower pressures.

Presently a leakage test is performed on these valves following reach refueling outage in accordance with TS 4.4.6.2.2. This requirement also satisfies the OM Code leakage test requirement. These valves are open during system testing by releasing water from the accumulator into the reactor cavity during refueling operations.

The condition of these valves can be monitored by trending leakage. Increasing leakage rates provide an early indication of degradation in the valve so that the valve does not seat properly. Verification of flow through the valves during refueling operations will demonstrate the bi-directional functionality of the valves.

Testing The CM testing will trend leakage data for determining the condition of the valve by Requirements continuing to perform the leak (PIV) test per 4.4.6.2.2. The open test is performed by initiating flow through the valve to confirm the bi-directional functionality of these valves.

Frequency Refueling interval for both closed leakage test and open verify tests.

NOC-AE-20003765, Inservice Testing Program Description for the Fourth Ten-Year Interval

Contents

Text

Attachment:

1.0 INTRODUCTION

2. Applicable Code Edition and Addenda

3. Applicable Code Requirement

4. Reason for Request

Conclusion:

2. Applicable Code Edition and Addenda

3. Applicable Code Requirement

4. Reason for Request

Conclusion:

2. Applicable Code Edition and Addenda

3. Applicable Code Requirement

4. Reason for Request

Conclusion:

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NOC-AE-20003765, Inservice Testing Program Description for the Fourth Ten-Year Interval

Text

Attachment:

1.0 INTRODUCTION

2. Applicable Code Edition and Addenda

3. Applicable Code Requirement

4. Reason for Request

Conclusion:

2. Applicable Code Edition and Addenda

3. Applicable Code Requirement

4. Reason for Request

Conclusion:

2. Applicable Code Edition and Addenda

3. Applicable Code Requirement

4. Reason for Request

Conclusion:

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