Text

Snubber Program for the Fourth 10-Year Testing Interval
	ML23156A660
Person / Time
Site:	Fermi
Issue date:	06/05/2023
From:	Frank E; DTE Electric Company
To:	; Office of Nuclear Reactor Regulation, Document Control Desk
References
	NRC-23-0029
	Download: ML23156A660 (1)
	v • d • e

DTE Electric Company 6400 N. Dixie Highway Newport, MI 48166 10 CFR 50.55a June 5, 2023 NRC-23-0029 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Fermi 2 Power Plant NRC Docket No. 50-341 NRC License No. NPF-43

Subject:

Fermi Unit 2 Snubber Program for the Fourth 10-Year Testing Interval In accordance with American Society of Mechanical Engineers Code for Operation and Maintenance of Nuclear Power Plants (ASME OM Code), Subparagraph ISTA-3200(a),

Inservice Testing (IST) Plans shall be filed with the regulatory authorities having jurisdiction at the plant site. The Snubber Program Plan was not included with submittal of the Fourth 10-Year Interval Inservice Testing Program on January 25, 2021, and this oversight was captured and is being addressed under Fermi CARD 22-28959 to prevent recurrence. Submission of this letter is to provide the Snubber Program Plan for the Fourth 10-Year Interval.

No new commitments are being made in this submittal.

Should you have any questions or require additional information, please contact me at (734) 586-4772.

Sincerely, Eric Frank Manager - Nuclear Licensing

Enclosure:

Snubber Program Plan cc: NRC Project Manager NRC Resident Office Regional Administrator, Region III DTE

Enclosure to NRC-23-0029 Fermi 2 NRC Docket No. 50-341 Operating License No. NPF-43 Snubber Program Plan

Prepared by:

Reviewed by:

Snubber Program Plan for the Preservice and Inservice Examination and Testing of Snubbers DTE Energy Company One Energy Plaza Detroit, Michigan 48226 Fermi 2 Nuclear Operations Center 6400 Dixie Highway Newport, Michigan 48166 Date of Commercial Operation January 23, 1988 Fourth Interval Start May 2, 2019 Projected Completion Date December 31, 2029 Jessica Steftke I

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Date:

Snubber Pr Eric Sor Date:

Snubber Program Revision 1 Page i 1/12/2023

,µ~/23 Technic Reviewed by:

Date: 01/Jo/4-02-J Approved by:

Date: 1/_Z'l_ /2.3 Manager j/.3c:/2..oz3 Accepted by: Mark Wils Date:

ANII-HS ARMS - INFORMATION SERVICES Date Approved: ____ Release Authorized by: ____________ _

DSN: Snubber Program __ Rev: 1 _______ Date:

DTC: TMPLAN ____ File: 1715.04 _____ Recipient _______ _

Revision 0

1 Summary Snubber Program Revision 1 Page ii New program plan (relocated from ISI-NDE Program). Implementation of ASME OM Code, 2012 Edition for the Fourth IO-Year Interval.

Relocated LCO 3.0.8 information from 43.000.003, Visual Examination of Snubbers, to this program plan.

The snubber program document was revised to reference the approval of relief request RR-SI per AIM 20-20299.

Combined Defined Test Plan Groups (DTPG) 2 and 3 into a single DTPG for all hydraulic snubbers.

Number TABLE OF CONTENTS Section Snubber Program Revision 1 Page iii Page 1.0 PURPOSE................................................................................................................................... 1 2.0 SCOPE......................................................................................................................................... l

3.0 REFERENCES

........................................................................................................................... 2 4.0 ACRONYMS & DEFINITIONS............................................................................................... 3 5.0 ADMINISTRATIVE CONTROLS......................................................................,................... 8 6.0 PROGRAM DESCRIPTION.................................................................................................... 9 6.4 General Program Requirements.............................................................................................. 9 6.5 Plant Operational Requirements........................................................................................... 10 6.6 Visual Examination Program................................................................................................ 11 6.7 Functional Testing Program.................................................................................................. 14 6.8 Service Life Monitoring Program......................................................................................... 18 7.0 EQUIPMENT & PERSONNEL REQUIREMENTS........................................................... 19 8.0 DATABASE MANAGEMENT............................................................................................... 20 9.0 RECORDS AND REPORTS................................................................................................... 21 Attachments - Safety Related Snubbers Requiring Additional Evaluation for LCO 3.0.8 Applicability -LCO 3.0.8 Applicable Safety Related Snubbers Number of Pages 8

16

1.0 PURPOSE Snubber Program Revision 1 Page 1 of 22 1.1 This Snubber Program Plan establishes and defines the administrative requirements as required by Fermi Unit 2 Nuclear Power Plant (Fermi 2) Technical Requirements Manual (TRM) Section 5.1.1. The primary purpose of this program is to ensure the operational readiness of all Safety Related mechanical and hydraulic snubbers by providing requirements for periodically examining, testing, and monitoring the service life of each snubber.

1.2 Fermi 2 is implementing the requirements of ASME Code for Operation and Maintenance of Nuclear Power Plants (OM Code), Subsections ISTA and ISTD, 2012 Edition, as allowed by 10CFR50.55a. Fermi 2 is also implementing OM Code Case OMN-13, "Requirements for Extending Snubber Inservice Visual Examination Interval at L WR Power Plants", as approved in Regulatory Guide 1.192, issued March 2017.

1.3 Letter NRC-19-0017 was filed with the Nuclear Regulatory Commission (NRC) to request regulatory relief for the use of ASME OM Code Case OMN-13. RR-Sl was approved by the NRC on 10/3/19 and is acceptable for use at Fermi 2.

2.0 SCOPE 2.1 The Snubber Program implements the requirements of the OM Code, as applicable, for the Fourth Ten-year Interval, May 2, 2019 through December 31, 2029.

2.2 The Snubber Program scope includes mechanical and hydraulic snubbers, which are divided into two groups, "safety" related snubbers and "non-safety" related snubbers. Safety Related snubbers are those used in systems 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, or to ensure the integrity of the reactor coolant pressure boundary. Non-Safety Related snubbers are not addressed by 10CFR50.55a or OM Code requirements and therefore are considered an augmented scope.

2.3 All snubbers subject to examination and testing in accordance with the Snubber Program are listed in SnubbWorks.

2.4 The Snubber Program supports the requirements of 1 0CFR50.65, Maintenance Rule, through implementation of condition monitoring activities to provide reasonable assurance that structures, systems and components within the scope of the Snubber Program will perform their intended functions.

2.5 The examination boundaries for the OM Code shall include the snubber assembly from pin to pin, inclusive. The requirements for the examination of piping and structural attachments shall continue to be in accordance with ASME Section XI, IWF-5200(c) and IWF-5300(c) (the examination of integral and non-integral attachments for snubbers, including lugs, bolting, pins, and clamps).

3.0 REFERENCES

3.1 10CFR50.55a, Codes and Standards Snubber Program Revision 1 Page 2 of 22 3.2 ASME OM Code, Operation and Maintenance of Nuclear Power Plants, 2012 Edition 3.3 ASME OM Code Case OMN-13, "Requirements for Extending Snubber Inservice Visual Examination Interval at L WR Power Plants" 3.4 Fermi Unit 2 Nuclear Power Plant Technical Requirements Manual Section 5.1.1 3.5 MES73, Engineering Support Conduct Manual, Snubber Program 3.6 PEP20, Snubber Program Manual 3.7 MES23, Inservice Inspection and Testing 3.8 MES25, Visual Examination 3.9 MES30, Repair and Replacement Programs 3.10 MES38, Software Controls for Non-Process Applications 3.11 MGA07, Records Management 3.12 MLS08, Licenses, Plans and Programs 3.13 MQAl 1, Corrective Action Program 3.14 35.000.225, Mechanical Snubber Maintenance 3.15 35.000.226, Power Piping Hydraulic Snubber Overhaul 3.16 35.000.234, Snubber Removal and Installation 3.17 43.000.003, Visual Examination of Snubbers 3.18 43.000.011, Snubber Functional Test 3.19 43.000.013, Service Life Monitoring of Snubbers 3.20 NRC-19-0017, Submittal of the Snubber Program Relief Request RR-SI for the Fourth IO-Year Interval 3.21 Program Evaluation 96-050, Evaluation of Snubber Seal Life Extension 3.22 Program Evaluation 97-040, Evaluation of Balance of Plant Seal Life 3.23 Program Evaluation 98-019, Evaluation of Snubber Seal Life of Selected Snubbers 3.24 Program Evaluation 99-029, Drag and Motion Acceptance Limits for Snubbers 3.25 Program Evaluation 10-005, Use of ASME OM Code Case OMN-13 3.26 6M721-5808, ISI Classification Boundary Drawing Legend & Symbols 3.27 Design Specification 3071-031, Pipe Erection 3.28 NUREG 1482, Guidelines for Inservice Testing at Nuclear Power Plants 3.29 IE Notice 84-67, Recent Snubber Inservice Testing With High Failure Rates

Snubber Program Revision 1 3.30 IE Notice 84-73, Down-rating of Self-aligning Ball Bushings used in Snubbers 3.31 IE Notice 94-48, Snubber Lubricant Degradation in High-Temperature Environments 3.32 Generic Letter (GL) 84-13, Technical Specification for Snubbers Page 3 of 22 3.33 GL-90-09, Alternative Requirements for Snubber Visual Inspection Intervals and Corrective Actions 3.34 GL-91-08, Removal of Component Lists from Technical Specifications 3.35 INPO SER 54-81, ECCS Piping Damaged by Water Hammer 3.36 Electric Power Research Institute (EPRI) Technical Report (TR) TR-110381, Risk-Based Snubber Inspection and Testing Guidelines 3.37 EPRI TR-102363, Evaluation of Snubber Functional Test Methods, Tier 1 and Tier 2 3.38 EPRI TR-1014480, Effective Refueling Outage Preparation and Execution Guidance 3.39 EPRI NP-6443, Improved Criteria for Snubber Functional Testing 3.40 SnubbWorks controlled site database module in the IDDEAL Software Suite 3.41 INPO Engineering Program Guide; Snubbers, EPG-07.

3.42 ML19267A027, NRC approval letter for the Snubber Program Relief Request RR-SI for the Fourth 10-Year Interval 4.0 ACRONYMS & DEFINITIONS 4.1 Acronyms 4.1.1 The standard acronyms used in this program plan may be found in the Fermi 2 Abbreviation and Acronym List.

4.2 Definitions 4.2.1 Acceptable/Satisfactory - A snubber condition whereby all examination or test parameters have been met and the snubber is determined to be capable of performing its design function.

4.2.2 Accessible Snubbers - Those snubbers that can be accessed during normal reactor operation.

4.2.3 Activation - The change of condition from passive to active, in which the snubber resists rapid displacement of the attached pipe or component.

4.2.4 Activation Velocity - The velocity at which the snubber provides restraint of motion.

4.2.5 Application-Induced Failures - Failures resulting from environmental conditions or application of the snubber for which it has not been designed or qualified.

4.2.6 As-Found - The condition of a snubber as it exists in the system prior to any preventive maintenance, corrective maintenance, or removal.

4.2.7 As-Left - The condition of a snubber as it exists in the system after any preventive maintenance, corrective maintenance, or installation.

Snubber Program Revision 1 Page 4 of 22 4.2.8 Authorized Nuclear Inservice Inspector (ANII) - A person who is employed and has been qualified by an Authorized Inspection Agency to verify that examinations, tests and repairs are performed in accordance with the rules and requirements of Section XI.

4.2.9 Augmented Scope - An examination or testing program that addresses additional requirements as established by the Owner or other Regulatory Authority or Agencies that may not require complete compliance with the requirements of the OM Code.

4.2.10 Bench Testing - Functional testing of snubbers utilizing the Wyle Model 100/150 Test Bench or similar equipment.

4.2.11 Bleed Rate - Synonymous to Release Rate - The rate of axial snubber movement under a specified load after activation of the snubber takes place.

4.2.12 Breakaway Force - The minimum applied force required to initiate extension or retraction of the snubber.

4.2.13 Cold Set Dimension - The dimension where the snubber was set during initial start-up with the system in its designed cold condition ( e.g., filled and vented, ambient temperature). The dimension is typically found on the hanger sketch.

4.2.14 Component - An item in a nuclear power plant such as a vessel, pump, valve, piping system or component support.

4.2.15 Component Support - A metal support designed to transmit loads from a component to the load carrying building or foundation structure. Component supports include piping supports and encompass those structural elements relied upon to either support the weight or provide structural stability to components.

4.2.16 Cylinder - The hydraulic pressure vessel, which houses the piston, gland, seals and other components that make up the moving part of the snubber.

4.2.17 Dead Band - The clearance or play (axial movement) in the snubber and snubber attachment assembly before motion causes activation.

4.2.18 Defined Test Plan Group (DTPG) - A population of snubbers from which samples are selected for testing.

4.2.19 Degraded Snubber - For visual examination, a condition in which the snubber has one or more visual examination parameters that are unacceptable, but the parameter(s) are not serious enough to warrant classifying the overall snubber condition as unacceptable (i.e., low fluid level).

For functional testing, a condition in which the snubber still performs the required actions during the test (i.e., activation and bleed), but the actual values obtained are predicted to trend outside the acceptance range prior to the next test interval.

4.2.20 Design or Manufacturing Induced Failures - A failure resulting from a potential defect in manufacturing or design that gives cause to suspect other similar snubbers. This includes any snubber that fails to withstand the environment or application for which it is designed.

4.2.21 Diagnostic Testing - Testing to determine the cause or mechanism associated with failure, degradation, or performance anomaly of a snubber.

4.2.22 Drag - The internal frictional resistance of a snubber to movement.

Snubber Program Revision 1 Page 5 of 22 4.2.23 Drag Force - The force that will sustain low-velocity snubber movement, without activation, throughout the working range of the snubber stroke.

4.2.24 Dynamic Loads - Forces caused by seismic motion, water or steam hammer, pressure pulses, relief valve thrust, and some system vibratory motion.

4.2.25 Dynamic Restraint (Snubber) - A device that provides restraint to a component or system during a sudden application of force, but allows essentially free motion of the component or system during thermal movement.

4.2.26 End Attachments - The connections at either end of the snubber (eyes, clevises, etc.)

that are used to connect the snubber to piping, equipment or structural members.

4.2.27 Engineering - The plant group that provides clear and concise design requirements for both Fermi 2 and vendor installed equipment to ensure that all requirements are met relative to snubbers.

Engineering also performs evaluations for degraded or unacceptable snubbers and maintains and implements the Snubber Program.

4.2.28 Examination - The performance of visual observing, monitoring or measuring to determine conformance to specified requirements (i.e., fluid levels, settings, installation of locking devices, etc.)

4.2.29 Examination Group - A composition of snubbers, which have been selected for examination.

4.2.30 Failure Mode - The manner in which a snubber fails to perform its intended function.

Generally, this is either an active (locked up) failure or a passive (totally unrestricted) failure.

4.2.31 Failure Mode Group (FMG) - A group of snubbers that have failed and those other snubbers that have similar potential for similar failure.

4.2.32 Fasteners - Securing devices such as lock wire, locking tabs, jam nuts, bolts, attachment welds, cotter pins, etc. which can be detected by visual observation.

4.2.33 Freedom-of-Motion - Manual stroke of snubber through its full range of motion. This is commonly used to check suspected transient snubbers for damage.

4.2.34 Functional Adequacy - Synonymous to Operational Readiness - The ability of a snubber or system to perform its intended function.

4.2.35 Functional Testing - Synonymous to Operational Readiness Testing - Measurement of the required parameters that verify snubber operational readiness or functional adequacy.

4.2.36 Hydraulic Snubber - A dynamic restraint device in which load is transmitted through a hydraulic fluid.

4.2.3 7 Inaccessible Snubbers - Snubbers that are in a high radiation area or other conditions that would render it impractical for the snubbers to be examined under normal plant operating conditions without exposing plant personnel to undue hazards.

Snubber Program Revision 1 Page 6 of 22 4.2.38 Inservice Examination - Visually observing, monitoring, or measuring the condition of a snubber after it has been in service.

4.2.39 Inservice Test - A functional test performed on a snubber to assess operational readiness after the snubber has been in service.

4.2.40 Lisega Hydraulic Snubber - Manufacturer of hydraulic snubbers used at Fermi 2.

4.2.41 Maintenance - Replacement of parts, adjustments, and similar actions that do not change the design ( configuration and material).

4.2.42 Maintenance, Repair and Installation-induced Failures - Failures that result from damage during maintenance, repair or installation activities that may cause other snubbers to be suspect.

4.2.43 Mechanical Snubber - A dynamic restraint devices in which load is transmitted entirely through mechanical components.

4.2.44 Modification - Alteration in the design of a snubber.

4.2.45 Monitoring - Continuous or periodic observation or measurement to ascertain the performance or obtain characteristics of a snubber.

4.2.46 Non-Safety Related - All snubbers attached to systems or equipment where it has been determined that their failure or the failure of the system or equipment to which they are attached would have no adverse effect on any Safety Related system.

4.2.47 Normal Operating Conditions - Plant operating conditions during operation at power, reactor startup, hot standby, reactor cool down, and cold shutdown.

4.2.48 Operational Readiness - Synonymous to Functional Adequacy - The ability of a snubber or system to perform its intended function.

4.2.49 Operational Readiness Testing - Synonymous to Functional Testing - Measurement of the parameters that verify snubber operational readiness.

4.2.50 Operations - The plant group that ensures compliance with plant technical requirements by determining whether or not a snubber is considered OPERABLE, based on information about the snubber that has been supplied to them by Engineering.

4.2.51 Operating Temperature - The temperature of the environment surrounding a snubber at its installed location during the phase of plant operation for which the snubber is required.

4.2.52 Pacific Scientific (Basic-PSA) Mechanical Snubber - Manufacturer of mechanical snubbers used at Fermi 2.

4.2.53 Power Piping Hydraulic Snubber - Manufacturer of hydraulic snubbers used at Fermi 2.

4.2.54 Predicted Hot Set Dimension - The analytically predicted pipe location during normal or emergency system operation, equal to the Cold Set Dimension plus the Thermal Movement for tension thermal movements, or minus the Thermal Movement for compression thermal movements.

Snubber Program Revision 1 Page 7 of 22 4.2.55 Plant Operation -

The reactor operating conditions as defined by Technical Specifications (TS).

4.2.56 Poppet Valve - The valve that provides the restriction to flow which results in restraint of axial motion of a hydraulic snubber.

4.2.57 Preservice Examination - Visually observing, monitoring, or measuring the condition of a snubber prior to the snubber initially being placed in service.

4.2.58 Preservice Test - A functional test performed on a snubber to assess operational readiness prior to the snubber initially being placed in service.

4.2.59 Quantitative Testing - A type of testing performed to establish the specific measure or value of a parameter to establish that a snubber is functioning within a specified range.

4.2.60 Release Rate - Synonymous to Bleed Rate - The rate of the axial snubber movement under a specified load after activation of the snubber takes place.

4.2.61 Relevant Condition - A condition observed during a visual examination that requires supplemental examination, corrective measure, repair, replacement, or analytical evaluation.

4.2.62 Relief Request - Document submitted to the NRC requesting permission to deviate from examination or test requirements stipulated in the ASME Codes. Relief Requests must provide adequate justification and require approval prior to implementation, unless the examination or test requirement is clearly impractical or relief has been pre-approved in other regulatory publications (i.e. Regulatory Guides, NUREG's, etc.).

4.2.63 Repair - The process of restoring a degraded or unacceptable snubber to its original design requirements.

4.2.64 Replacement Snubber - Any snubber other than the snubber immediately previously installed at a given location.

4.2.65 Reservoir - The vessel that contains the excess hydraulic fluid needed for the proper operation of a hydraulic snubber.

4.2.66 Safety Related (SR) - Snubbers used in systems 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, or to ensure the integrity of the reactor coolant pressure boundary.

4.2.67 Service Life - The period of time a snubber is expected to meet the operational readiness requirements without maintenance.

4.2.68 Service Life Population - Those snubbers for which the Service Life has been established.

4.2.69 Snubber (Dynamic Restraint) - A device that provides restraint to a component or system during a sudden application of force, but allows essentially free motion of the component or system during thermal movement.

4.2. 70 Spherical Bearings - Bearing that allows the snubber to rotate in several axes in the end attachments.

4.2.71 Stroke - Length of total possible snubber movement.

Snubber Program Revision 1 Page 8 of 22 4.2.72 Swing Clearance - The movement envelope within which the snubber must operate without restriction, from the cold installed position to the hot operating position.

4.2. 73 System Temperature - Considered cold for examinations when the system (gas or liquid) is dry and at ambient temperature. Considered hot for examinations when the system is charged or at operating pressure and near operating temperature.

4.2.74 Test - A procedure to obtain information through measurement or observation to determine the operational readiness of a component while under controlled conditions.

4.2.75 Thermal Movement - The amount the piping is analytically predicted to move from its Cold Set Dimension to its Predicted Hot Set Dimension during normal or emergency system operation, in either tension or compression. Thermal Movement is identified on the associated piping Design Calculation.

4.2.76 Transient Dynamic Event - An unanticipated event (e.g., water hammer, steam hammer) that may affect snubber operational readiness, which is determined to have occurred from reviews of operating data or during visual examination.

4.2.77 Transient Dynamic Event Failure - Inability of snubber to perform its intended function due to an unanticipated transient dynamic event.

4.2.78 Unexplained Failure - A failure for which the cause has not been determined.

4.2.79 Unacceptable/ Unsatisfactory Snubbers - Snubbers that do not meet the examination or testing requirements.

4.2.80 Wyle Laboratories Model 100/150 Test Bench - An automated mechanical test device designed to perform functional testing of snubbers.

4.2.81 VT (Visual) Examination - Examination of components such as mechanical and hydraulic snubbers and their supports to determine general mechanical and structural condition, and includes examinations for conditions that could affect operational readiness of snubbers.

5.0 ADMINISTRATIVE CONTROLS 5.1 Interpretation Contact 5.1.1 The Snubber Program Manager is the focal point for implementation, control, and interpretations of this program.

5.2 Code of Federal Regulations Limitations, Modifications and Augmented Examination Requirements.

5.2.1 The Fermi 2 Snubber Program will be utilizing the 2012 Edition of the ASME OM Code.

This is the latest approved version of the ASME OM Code as defined in 10CFR50.55a published February 16, 2018.

No Limitations, Modifications and Augmented Examination Requirements have been identified in the rulemaking that are applicable to the Fourth 10-Year Interval Fermi 2 Snubber Program.

5.3 Relief Requests Snubber Program Revision 1 Page 9 of 22 5.3.1 Relief Request RR-S 1 was submitted for NRC review and approval to allow for the use of ASME OM Code Case OMN-13, Performance-Based Requirements for Extending Snubber Inservice Visual Examination Intervals, Revision 2. RR-S 1 was approved by the NRC on 10/3/19 and is acceptable for use at Fermi 2.

5.4 Code Cases 5.4.1 Fermi 2 is implementing ASME Code Case OMN-13, Requirements for Extending Snubber Inservice Examination Interval at L WR Power Plants.

OMN-13 allows extension of the visual examination interval once specific requirements are met.

5.5 Revisions and Approvals 5.5.1 Changes to the Snubber Program shall be processed in accordance with MLS08, Licenses, Plans and Programs.

5.5.2 Changes to Snubber Program implementing procedures shall be processed in accordance with MGA02, Procedures, Manuals, and Orders.

5.5.3 A summary and history of changes will be maintained with this program plan and will be incorporated into the next revision of the plan.

5.5.4 The snubbers and locations are maintained for control purposes in the SnubbWorks database, which is exempt from the requirements of MES38, Software Controls for Non-Process Applications.

5.5.5 Changes to the SnubbWorks database shall be approved by the Snubber Program Manager.

5.5.6 Attachments 1 and 2 are provided to aid Operations in implementation of LCO 3.0.8.

6.0 PROGRAM DESCRIPTION 6.1 MES73 defines the key attributes and responsibilities of site organizations for an effective implementation of the Snubber Program.

6.2 Additional work instructions for the Snubber Program are found in PEP20, "Snubber Program Manual."

6.3 Additional requirements for the Inservice Inspection (ISI) and Inservice Testing (IST) Programs, including Program Evaluations, are found in MES23, Inservice Inspection and Testing.

6.4 General Program Requirements 6.4.1 For the classification of components and the boundaries of system classification, see 6M721-5808, ISI Classification Boundary Drawing: Legend & Symbols.

6.4.2 Examinations and tests of snubbers are typically performed during plant outages, but may be performed during normal system operations.

6.4.3 Non-Safety Related snubbers do not require examination or testing. However, in keeping with good engineering practices to provide assurance of structural reliability, an augmented scope for examination or testing may be performed as

Snubber Program Revision 1 Page 10 of 22 directed by the Snubber Program Manager. These examinations or tests will be tracked in SnubbWorks. The examination or testing criteria for Non-Safety Related snubbers are the same as for Safety Related snubbers. Failures found by such examination or testing do not require additional examination or testing, but shall be evaluated for appropriate corrective action.

6.4.4 Snubbers that do not meet all of the examination or testing requirements but are still able to perform their intended function are considered degraded. Degraded snubbers should be evaluated for appropriate corrective action, which may include determining the degradation to be insignificant, to adjustment, repair, modification, or replacement.

6.4.5 Repair and replacement activities shall be performed, as necessary, in accordance with ASME Section XI per MES30, Repair and Replacement Programs.

6.4.6 Snubbers shall not be adjusted, maintained, or repaired before an examination or test specifically to meet the examination or test requirements.

6.4. 7 Snubbers that are maintained or repaired by removing or adjusting a snubber part that can affect the results of applicable tests required by this program shall be examined and tested in accordance with the applicable requirements before returning to service. The requirements selected shall ensure that the parameters that may have been affected are verified to be acceptable by suitable examination and tests.

6.4.8 Replacement or modified snubbers shall have a proven suitability for the application and environment. These snubbers shall be examined and tested in accordance with written procedures and verified to be acceptable.

6.4.9 Snubbers may be deleted from the plant based on analysis of the affected piping system.

When an unacceptable snubber is deleted, the deleted snubber shall nevertheless be considered in its respective examination population, category, or failure mode group (FMG) for determining corrective action. That snubber will remain part of its associated DTPG until the end of the outage at which time the snubber can be removed from the DTPG. When a snubber location is added to the plant, that location becomes part of a DTPG after the outage it was installed.

6.4.10 If an unanticipated system transient dynamic event (e.g. water, steam hammer) that may affect snubber operational readiness occurs and is identified outside the scope and performance of inservice examination or testing, then the affected snubbers and systems shall be reviewed and any appropriate action taken. Any action taken shall be considered independent of the requirements of inservice examination and testing.

6.4.11 An evaluation shall be performed of the system or component of which an unacceptable snubber is a part, for possible damage to the supported system or component.

6.5 Plant Operational Requirements 6.5.1 All Safety Related snubbers shall be operable during plant MODES 1, 2, & 3, and MODES 4 & 5 as required.

Snubber Program Revision 1 Page 11 of 22 6.5.2 Snubbers can be categorized by their design function and as supporting one or two trains of a system. Snubber design function can be considered as reacting to only seismic loads, reacting to only non-seismic loads ( e.g. thrust loads, water-hammer loads, LOCA loads, and pipe rupture loads), and as reacting to both seismic and non-seismic loads. A listing of Safety Related snubbers and their LCO 3.0.8 applicability is provided in Attachment 1 and 2.

a. If the design function of the snubber is to react to only seismic loads, LCO 3.0.8 may be applied.

b. If the design function of the snubber includes both seismic loads and non-seismic loads, any TS systems supported by the nonfunctional snubber must be able to remain OPERABLE if subjected to the non-seismic loads with the snubber removed.

If the supported TS system will remain OPERABLE when subjected to non-seismic loads, LCO 3.0.8 may be applied. Otherwise, LCO 3.0.8 may not be applied to TS systems supported by the nonfunctional snubber.

c. If the design function of the snubber includes only non-seismic loads ( e.g., thrust loads, water-hammer loads, LOCA loads, and pipe rupture loads), LCO 3.0.8 cannot be applied to the TS systems supported by the nonfunctional snubber. However, if it can be confirmed that a snubber is not needed for OPERABILITY of the TS system, LCO 3.0.8 is not needed.

6.5.3 LCO 3.0.8: When one or more required snubbers are unable to perform their associated support function(s), any affected supported LCO(s) are not required to be declared not met solely for this reason if risk is assessed and managed, and one of the following conditions apply (or the affected supported system LCO(s) will be declared not met):

a. snubbers that support only one division or subsystem of a multiple division or subsystem supported system or support a single division or subsystem supported system are able to perform their associated support function within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

b. snubbers that support more than one division or subsystem of a multiple division system or subsystem supported system are able to perform their associated support function within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

6.6 Visual Examination Program 6.6.1 General Examination Requirements

a. Instructions on visual examination performance are described in 43.000.003, Visual Examination of Snubbers.

b. Tolerances for pipe supports, hangers, whip restraints, snubbers, and anchors shall be in accordance with Design Specification 3071-031, Pipe Erection, Appendix F.

c. Fermi 2 is implementing OM Code Case OMN-13, which allows an extension of the visual examination interval beyond the maximum interval allowed in Table ISTD-4252-1 to at least once every 10 years for mechanical and hydraulic snubbers once specific requirements are met. Program Evaluation 10-005, Revision 0, evaluated the use of OMN-13 at Fermi 2, including the basis for implementing OMN-13 and how the requirements have been met.

Snubber Program Revision 1 Page 12 of 22

d. Snubber examinations are tracked in the SnubbWorks database to ensure that no examinations are missed within the interval.

6.6.2 Specific Preservice Examination Requirements

a. For new and modified systems, preservice examination shall be performed after placing the systems in service. The initial examination shall, as a minimum, verify the following:

1.

No visible signs of damage or impaired operational readiness exist as a result of storage, handling, or installation.

11. The snubber load rating, location, orientation, position setting, and configuration (e.g., attachments and extensions) are in accordance with design drawings and specifications. Installation records (based on physical examinations) of verification that the snubbers were installed according to the design drawings and specifications shall be acceptable in meeting this requirement.

m. Adequate swing clearance is provided to allow snubber movement.

1v. If applicable, fluid is at the recommended level, and fluid is not leaking from the snubber system.

v. Structural connections, such as pins, bearings, studs, fasteners, lock nuts, tabs, wire, and cotter pins, are installed correctly.

6.6.3 Specific Inservice Examination Requirements

a. Snubbers shall be visually examined on the required schedule and evaluated to determine their operational readiness.

b. Inservice examination shall be a visual examination to identify physical damage, leakage, corrosion, or degradation that may have been caused by environmental exposure or operating conditions, and shall include examination for indications of degradation and severe operating environments. External characteristics that may indicate operational readiness of the snubber shall be examined. An examination checklist shall be used.

c. All snubbers shall be examined (as-found) prior to conducting any maintenance, stroking, or testing, and prior to removal, for any reason, from their installed location.

d. An as-left visual examination will be performed after the snubber is adjusted, repaired, modified, or replaced, prior to returning the snubber to service.

e. All of the snubbers shall be categorized as one population for examination, or they may be categorized as accessible and inaccessible populations. The decision to categorize the snubbers as one population or as separate populations may be made during or after the examination. If combining accessible and inaccessible populations into one population, the shorter interval shall be used for subsequent examination.

The snubbers are categorized as Accessible and Inaccessible, based upon accessibility under normal plant operating conditions.

Snubber Program Revision 1 Page 13 of 22

f. Inservice examination of snubbers shall include all snubbers based either on the whole population or on the accessibility categories. The snubbers are currently examined as a whole population on the same interval.

g. Snubbers shall be installed so they are capable of restraining movement when activated. Examinations shall include observations for the following and the conditions shall be evaluated when found:

1.

Loose fasteners, or members that are corroded or deformed

11. Disconnected components or other conditions that might interfere with the proper restraint of movement Snubbers evaluated to be incapable of restraining movement shall be classified unacceptable.

h. Snubber installations shall not restrain thermal movement to an extent that unacceptable stresses could develop in the snubber, the pipe, or other equipment that the snubber is designed to protect or restrain. This requirement is satisfied if no indication of binding, misalignment, or deformation of the snubber is observed.

1. Snubbers shall be free of defects that may be generic to particular designs as may be detected by visual examination. For example, fluid supply or content for hydraulic snubbers shall be observed. An observation that the fluid level is equal to or greater than the minimum specified amount that is

sufficient for actuation at its operating extension is considered to satisfy this requirement. If the fluid is less than the minimum amount, the installation shall be identified as unacceptable, unless a test establishes that the performance of the snubber is within specified limits.

J. Fluid level in hydraulic snubber reservoirs shall be sufficient to ensure that the snubber is acceptable for continued service to the next examination interval.

k. A snubber that requires further evaluation or is classified as unacceptable during inservice examination may be tested. Results that satisfy the operational readiness test criteria shall be used to accept the snubber, provided the test demonstrates that the unacceptable condition did not affect operational readiness. Failures associated with such testing do not require additional testing.

1. Snubbers that do not meet examination requirements shall be evaluated to determine the cause of the unacceptability. Unacceptable snubbers shall be adjusted, repaired, modified, or replaced. Additional action regarding the examination interval shall be taken as indicated in Table ISTD-4252-1.

m. Subsequent examination intervals shall begin at the end of the previous examination interval, and conclude at the end of the next refueling outage. The duration of examination intervals shall be in accordance with Table ISTD-4252-1.

n. Snubbers determined to be unacceptable based on the visual examination acceptance criteria at any time during the interval shall be counted in determining the subsequent examination interval in accordance with Table ISTD-4252-1.

Snubber Program Revision 1 Page 14 of 22

o. Per OMN-13, all Safety Related snubbers shall be examined and evaluated at least once every 10 years. If at any time during an examination interval the cumulative number of unacceptable snubbers exceeds the applicable value from Column B in Table ISTD-4252-1, the current examination interval shall end, and all remaining examinations must be completed within the current fuel cycle. The duration of the subsequent examination interval shall be reduced in accordance with Table ISTD-4252-1, using the examination interval prior to implementing the code case as the base interval. The beginning of the subsequent fuel cycle shall be the starting date for the new examination interval.

6. 7 Functional Testing Program 6.7.1 General Testing Requirements

a. Instructions on functional testing performance are described in 43.000.011, Snubber Functional Test.

b. Snubbers shall be tested at a load sufficient to verify the specified test parameters.

Testing at less than rated load must be correlated to test parameters at rated load.

c. In cases where there may be differences between the installed operating conditions and the conditions under which a snubber is tested, correction factors shall be established and test results shall be correlated to operating conditions, as appropriate.

Correction factors are not used at Fermi.

6.7.2 Specific Preservice Testing Requirements

a. Preservice functional testing shall be performed on all new or replacement snubbers prior to installation, either at the manufacturer or owner facility. Tests shall verify the following:

1.

Activation is within the specified range of velocity or acceleration in tension and compression.

11. Release rate, when applicable, is within the specified range in tension and compression. For units specifically required not to displace under continuous load, the ability of the snubber to withstand load without displacement shall be demonstrated.

111. For mechanical snubbers, drag force is within specified limits in tension and compression.

1v. For hydraulic snubbers, if required to verify proper assembly, drag force is within specified limits in tension and compression.

b. Snubbers that fail the preservice functional test shall be evaluated for the cause(s) of failure(s). If a design deficiency in a snubber is found, it shall be corrected by changing the design or specification, or by other appropriate means.

Other deficiencies shall be resolved by adjustment, modification, repair, replacement, or other appropriate means.

Adjusted, modified, repaired, or replacement snubbers shall be retested.

6.7.3 Specific Inservice Testing Requirements Snubber Program Revision 1 Page 15 of 22

a. Snubbers shall be tested for operational readiness during each fuel cycle. Snubber testing may begin no earlier than 60 days before a scheduled refueling outage, and must be completed prior to plant start-up from the refueling outage. Testing shall be performed during normal system operation, or during system or plant outages.

Approved procedures shall govern removing snubbers from operable system(s).

b. Snubber functional tests shall verify the following:

1.

Activation is within the specified range of velocity or acceleration in tension and compress10n.

11. Release rate, when applicable, is within the specified range in tension and compression. For units specifically required not to displace under continuous load, the ability of the snubber to withstand load without displacement shall be demonstrated.

iii. For mechanical snubbers, drag force is within specified limits in tension and compress10n.

c. Snubbers shall be tested in their as-found condition to the fullest extent practicable with regard to the required test parameters. Test methods and removal procedures shall not alter the condition of a snubber to the extent that the results do not represent the as-found snubber condition.

d. Snubbers may be tested in their installed location by using approved test methods and equipment, or may be removed and bench tested in accordance with approved procedures. Bench testing of the snubber is performed by securing the snubber at both ends in a test bench and, as such, requires the complete removal of the snubber from a plant location. In-place testing of a hydraulic snubber follows the principle of pressurizing fluid inside the snubber cylinder to perform various functional tests to determine lock-up velocities, bleed rates, and seal integrity. Using this technique, a snubber can be tested in-place without completely removing the snubber. This method is not currently performed at Fermi.

e. When snubber size, test equipment limitations, or inaccessibility prevents use of bench or in-place testing, snubber subcomponents that control the parameters to be verified shall be examined and tested in accordance with approved test methods.

Reassembly shall be in accordance with approved procedures. When test methods are used that either measure parameters indirectly, or measure parameters other than those specified, the results shall be correlated with specified parameters through established methods. This method is not currently performed at Fermi.

f. Each snubber in a parallel or multiple (tandem) installation shall be identified and counted individually. The tandem(s) of a snubber may also be selected and credited toward the total number of snubbers required by any testing sample plan.

g. Fractional sample sizes shall be rounded up to the next integer.

h. The Defined Test Plan Groups (DTPGs) shall include all snubbers except those that have been adjusted, repaired, modified, or replaced as a result of not meeting

Snubber Program Revision 1 Page 16 of 22 examination requirements. These snubbers shall be exempt for the concurrent test interval.

1. The total snubber population may be considered one DTPG, or alternatively, differences in design, application, size, or type may be considered in establishing DTPGs (snubbers attached to the steam generator or reactor coolant pump shall be at least one, separate DTPG, but this isn't applicable to Fermi). The Safety Related snubbers are divided into 4 DTPGs as defined below:

Safety Classification Type Size DTPG Safety Related Mechanical PSA1/4 Group IA PSA1/2 PSA 1 Safety Related Mechanical PSA3 Group lB PSA 10 Safety Related Mechanical PSA35 Group IC PSA 100 Safety Related Hydraulic All hydraulic snubbers Group 2 (Power Piping and Lisega)

J. Tests are required to be in accordance with a specified sampling plan. The snubbers of each DTPG shall be tested using either the 10% or the 3 7 testing sample plan. A test plan shall be selected for each DTPG before the scheduled testing begins. The test plan selected for a DTPG shall be used throughout the refueling outage tests for that DTPG and any failure mode group (FMG) that is derived from it. Fermi is using the 10% testing sample plan for all DTPGs. The 3 7 testing sample plan may be used in lieu of the 10% plan at the discretion of the Snubber Program Manager.

k. Unacceptable snubbers shall be adjusted, repaired, modified, or replaced. Snubbers that do not meet test requirements shall be evaluated to determine the cause of the failure. The evaluation shall include a review of information related to other unacceptable snubbers found during testing that refueling outage. The evaluation results should be used, if applicable, to determine FMGs to which snubbers may be assigned. Evaluation information may be used to assign previously unexplained unacceptable snubbers to an appropriate FMG.

1. Snubbers found unacceptable according to functional test requirements may be assigned to FMGs. FMGs shall include all unacceptable snubbers with the same failure mode and all other snubbers with similar potential for similar failure. The following FMGs should be considered:

1.

Design or manufacturing

11. Application induced iii. Maintenance, repair, or installation iv. Transient dynamic event

Snubber Program Revision 1 Page 17 of 22

m. When snubbers have been tested as part of DTPG test requirements and found to be unacceptable, and evaluation establishes an FMG based on the failure of certain snubbers, the number of those unacceptable snubbers shall be used in determining testing in the FMG in accordance with the sample plan additional testing requirements. However, those snubbers shall be counted only in the value of N as completed tests in the DTPG. When snubbers have been found to be acceptable when tested as part of DTPG test requirements and subsequent evaluation establishes an FMG that would include those snubbers, those snubbers shall not be counted in the value of NF when counting FMG tests. An FMG shall remain as defined until corrective action is complete.

n. When a snubber is assigned to more than one FMG, it shall be counted in each of those FMGs and shall be included in corrective action for each of those FMGs.

o. After the DTPG and sample plan additional testing requirements are satisfied for a DTPG, any separate and additional FMG review or testing does not require additional tests in the DTPG.

p. The initial sample shall be 10% of the DTPG. As practicable, the sample shall include representation from the DTPG based on the significant features (i.e., the various designs, configurations, operating environments, sizes, and capacities) and based on the ratio of the number of snubbers of each significant feature, to the total number of snubbers in the DTPG. The sample may also be selected from snubbers concurrently scheduled for seal replacement or other similar activity related to service life monitoring. The snubbers shall be tested on a generally rotational basis to coincide with the service life monitoring activity.

q. For each snubber determined to be unacceptable by functional testing, additional snubbers shall be tested. When additional samples are required, they shall be at least one-half the size of the initial sample from that DTPG. When an unacceptable snubber has not been assigned to an FMG, the additional sample shall be taken from the DTPG. As practicable, the additional sample shall include the following:

1.

Snubbers of the same manufacturer's design

11. Snubbers immediately adjacent to those found unacceptable 111. Snubbers from the same piping _system 1v. Snubbers from other piping systems that have similar operating conditions such as temperature, humidity, vibration, and radiation

v. Snubbers that are previously untested

r. When samples from an FMG are required, they shall be selected randomly from untested snubbers in the FMG. The following actions shall apply for FMG testing:

1.

Transient Dynamic Event FMG: The operational readiness of all snubbers in this FMG shall be evaluated by stroking or testing. All snubbers in this FMG that are determined to be operationally ready by stroking remain eligible for selection and tests for other appropriate FMGs and the DTPG. However, snubbers that are determined to be operationally ready by testing shall not be eligible for such tests.

Snubber Program Revision 1 Page 18 of 22

11. Other FMGs: Tests in each FMG shall be based both on the number of unacceptable snubbers found in the DTPG and determined by the failure evaluation to be appropriate for establishing the FMG, and on the number of unacceptable snubbers subsequently found in the FMG. Testing shall continue until the mathematical expression of subparagraph ISTD-5331(b) is satisfied or all snubbers in the FMG have been tested. Failures in an FMG shall require additional tests within the FMG unless the failure evaluation indicates that an additional and separate FMG is appropriate for additional tests from the DTPG.

s. The snubbers of each DTPG and FMG shall be tested as required. For unacceptable snubbers, the additional testing shall continue in the DTPG or FMG until testing is complete. Testing is complete when the mathematical expressions of paragraph ISTD-5331 are satisfied, or all snubbers in the DTPG or FMG have been tested.

t. Snubbers placed in the same location as snubbers that failed during the previous functional testing interval shall be retested at the next functional testing interval unless the cause of the failure is clearly established and corrected. Any such retest shall not be considered a part of inservice functional testing sample selection requirements. Failures found by these retests shall not require additional testing, but shall be evaluated for appropriate corrective action.

6.8 Service Life Monitoring Program 6.8.1 Instructions on Service Life Monitoring performance are described m 43.000.013, "Service Life Monitoring of Snubbers."

6.8.2 Predicted Service Life

a. Initial snubber service life shall be predicted based on manufacturer's recommendation or design review. Methods for predicting service life are given in Nonmandatory Appendix F.

6.8.3 Service Life Evaluation

a. Service Life shall be evaluated at least once each fuel cycle, and increased or decreased, if warranted. Evaluation shall be based upon technical data from representative snubbers that have been in service in the plant, or other information related to service life, and shall include any transient dynamic event and associated actions taken. If the evaluation indicates that service life will be exceeded before the next scheduled system or plant outage, one of the following actions shall be taken:

1.

The snubber shall be replaced with a snubber for which the service life will not be exceeded before the next scheduled system or plant outage.

11. Technical justification shall be documented for extending the service life to or beyond the next scheduled system or plant outage.

111. The snubber shall be reconditioned such that its service life will be extended to or beyond the next scheduled system or plant outage.

6.8.4 Cause Evaluation Snubber Program Revision 1 Page 19 of 22

a. Cause evaluations for any visual examination or functional test failures shall be used to determine if an adjustment to the expected service life is required.

6.8.5 Examination During Disassembly

a. Snubbers and snubber parts shall be examined for 'indications of degradation and severe operating environments during disassembly (e.g., during failure evaluation or refurbishment).

6.8.6 Testing for Service Life Monitoring Purposes

a. Snubbers selected for testing specifically for service life monitoring purposes will be considered an augmented scope. Failures associated with such testing do not require additional testing, but shall be evaluated for appropriate corrective action.

6.8.7 Review of Functional Testing Data

a. Inservice test data shall be evaluated for indications of snubber degradation or other anomalies. This includes a review of test traces, where available. The results of this evaluation shall be used to identify snubbers that are subject to progressive degradation and severe operating environments not previously identified.

6.8.8 The SnubbWorks database maintains a record of each snubber installed including, as a minimum, the serial number of the installed snubber, the date on which the designated service life commenced, and the applicable installation dates, visual examination dates, and functional test dates. When snubbers are rebuilt or replaced, the service life shall be updated, which will provide future statistical bases for consideration of snubber service life.

7.0 EQUIPMENT & PERSONNEL REQUIREMENTS 7.1 Instrumentation and Test Equipment 7.1.1 Instrumentation and test equipment used in the examination and testing of snubbers shall have a current calibration sticker and have the range and accuracy necessary to demonstrate conformance to the test requirements as stated in the applicable testing procedures.

7.1.2 The test machine presently used at Fermi 2 is the Wyle Model 100/150 Test Bench. An equivalent approved testing machine is acceptable for functional testing requirements provided that it is capable of testing to verify that:

a. Free movement force will initiate motion of the snubber rod in both tension and compression during low velocity displacements.

b. Activation is achieved within the specified range of velocity or acceleration in both tension and compression.

c. Snubber bleed or release rate is within the specified range in compression or tension.

7.2 Training and Personnel Qualifications Snubber Program Revision 1 Page 20 of 22 7.2.1 Personnel who are required to witness, perform, or evaluate examination or test results will be trained or certified, as applicable, in accordance with approved procedures.

7.2.2 Training is performed to meet Fermi 2 general regulatory requirements, and good engineering practices, as applicable. Briefings shall be conducted prior to performance of any examination or testing activities.

7.2.3 Maintenance personnel involved with snubber work are to be qualified in accordance with the applicable procedures. In addition, personnel performing functional testing on snubbers using the test machine must be qualified on the operation of the machine, and have a working knowledge of snubber design and test parameters.

7.2.4 Personnel performing snubber evaluations shall be knowledgeable in snubber operational readiness requirements, design, test parameters, failure/degradation mechanisms, and maintain a knowledge of current industry events and trends.

7.2.5 Personnel performing VT examinations must be certified in accordance with MES25, Visual Examination.

7.2.6 Supplemental personnel performing VT examinations shall be certified in accordance with a written program accepted by the DTE VT Level III.

7.2.7 Personnel performing visual examinations in support of the Fermi Snubber Program will be qualified per the requirements of 43.000.003, Visual Examination of Snubbers.

8.0 DATABASE MANAGEMENT 8.1 The SnubbWorks data management system is currently used as a tool to manage, monitor, and maintain the snubber population at Fermi 2.

Other methods of database management are acceptable provided the requirements of this program plan are met.

8.2 The SnubbWorks database contains information on all installed and spare snubbers and the associated Safety Related and Non-Safety Related plant locations for the Snubber Program. Any approved user may access required information by using the applicable unique identifiers such as snubber component or serial number, location, exam, or mark/ hanger number, etc.

8.3 Additional information may also be tracked in the database to aid in work planning, including location variables such as scaffolding requirements, radiation conditions, isometric, component drawings, etc.

8.4 At the beginning of an examination or testing interval, a review of the database should be conducted to aid in determining the new examination or test scopes.

8.5 In order to build and maintain the test program database, information from the applicable snubber test data sheets should be transferred into SnubbWorks to build historical files for each location and individual snubber. When a snubber is replaced, added or deleted from the plant location, or is moved from one location to another and a spare snubber put in its place, to maintain program integrity, the database will require updating. During the current work scope, all snubber test data sheets should also be transferred to the database on a frequent basis.

Snubber Program Revision 1 Page 21 of 22 8.6 After the test results have been entered, the Snubber Program Manager may use the SnubbWorks database to search for any test discrepancies to determine if additional testing is required. A review of applicable test data sheets will also reveal test discrepancies.

8.7 Evaluation Reports for all snubbers that failed testing may be generated and issued from the SnubbWorks database. This may be forwarded to the System Engineer for component/ system evaluation. In addition, any unusual attributes (i.e. repetitive failures, unusual wear etc.) may also be identified for disposition.

8. 8 Various scheduling, work progress, functional test and visual examination reports can be generated from SnubbWorks to provide the number of outstanding and completed exams or tests for the current examination or testing interval.

9.0 RECORDS AND REPORTS 9.1 The requirements for retention of records apply to those records generated in the course of performing examinations and tests on Safety Related snubbers, in accordance with MGA07, Records Management.

9.2 The results of examinations and tests shall be documented and shall include the manufacturer's model number, serial number, type, and unique location identification, as applicable, and the following, as a minimum:

Snubber identification; Date of test or examination; Reason for test or examination; Test or examination procedure used; Test equipment used; Calibration records; Values of measured parameters; Comparison with allowable ranges of test and examination values, and analysis of deviations; Requirement for corrective action; and, Name and signature of the person( s) responsible for conducting and analyzing the test or examination.

9.3 Detailed information on the installed location design characteristics for each snubber are listed in the SnubbWorks database.

Unique identifiers are assigned to both snubbers and locations.

Locations are identified by Mark Number (i.e., Ell-3154-G24) or Plant Identification System (PIS) Number (i.e., E1154G024). Snubbers are identified by unique serial numbers supplied by the manufacturer and typically stamped or etched on the snubber housing (i.e., 740051).

9.4 Records of predicted service life of all snubbers and service life evaluations shall be maintained.

9.5 Records of corrective action shall be maintained that shall include a summary of the corrective actions made, the subsequent inservice test or examination, confirmation of operational

Snubber Program Revision 1 Page 22 of 22 readiness, and the name and signature of the person(s) responsible for the corrective action and verification ofresults, in accordance with MQAl l, Corrective Action Program.

ATTACHMENT 1 Snubber Program Revision 1 Page 1 of 8 SAFETY RELATED SNUBBER$ REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY For Modes 1, 2, and 3, use of LCO 3.0.8 requires additional evaluation of 'other' dynamic loads on snubber. Refer to table below in conjunction with 24.000.01, 9 to determine LCO condition that applies if evaluation concludes that LCO 3.0.8 is available to use and system is required to be operable.

For Modes 4 and 5, the use ofLCO 3.0.8 is allowed due to no 'other' dynamic loads on the snubber. Refer to table below in conjunction with 24.000.01, 9 to determine LCO condition if system is required to be operable.

Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Pipin2: Iso Description subsystem B21-2297-G08 B2197G008 HPCI STEAMLINE - DRYWELL Mechanical No DC-2670 Yes (SRV,TSV,AP)

B21-2297-G09 B2197G009 HPCI STEAMLINE - DRYWELL Mechanical No DC-2670 Yes (SRV,TSV,AP)

B21-2297-Gl 1 B2197G011 HPCI STEAMLINE - DRYWELL Mechanical No DC-2670 Yes (SRV,TSV,AP)

B21-2586-G06 B2186G006 MAIN STEAM RELIEF VALVE DISCHARGE RV101 Mechanical No DC-2670 Yes (SRV,TSV,TAP,AP)

B21-2586-G08 B2186G008 MAIN STEAM RELIEF VALVE DISCHARGE RV101 Mechanical No DC-2670 Yes (SRV,TSV,TAP,AP)

B21-2587-G0S B2187G005 MAIN STEAM RELIEF VALVE DISCHARGE RV102 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B2 l-2588-G06 B2188G006 MAIN STEAM RELIEF VAL VE DISCHARGE RV 103 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-2589-G02 B2189G002 MAIN STEAM RELIEF VAL VE DISCHARGE RVl 04 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-25 89-G03 B2189G003 MAIN STEAM RELIEF VAL VE DISCHARGE RVl 04 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-25 89-G04 B2189G004 MAIN STEAM RELIEF VAL VE DISCHARGE RVl 04 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-2590-G04 B2190G004 MAIN STEAM RELIEF VALVE DISCHARGE RV105 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-2590-G07 B2190G007 MAIN STEAM RELIEF VALVE DISCHARGE RV105 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-2592-G02 B2192G002 MAIN STEAM RELIEF VAL VE DISCHARGE RVl 07 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-2592-G 10 B2192G010 MAIN STEAM RELIEF VAL VE DISCHARGE RVl 07 Mechanical No DC-2672 Yes (SRV,TSV,TAP,AP)

B21-2593-G04 B2193G004 MAIN STEAM RELIEF VALVE DISCHARGE RVl 08 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B21-2593-G07 B2193G007 MAIN STEAM RELIEF VALVE DISCHARGE RVl 08 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B21-2593-G13 B2193G013 MAIN STEAM RELIEF VAL VE DISCHARGE RV108 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B21-2594-GlO B2194G010 MAIN STEAM RELIEF VALVE DISCHARGE RV109 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B21-2595-G07 B2195G007 MAIN STEAM RELIEF VALVE DISCHARGE RVl 10 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B21-2595-G 13 B2195G013 MAIN STEAM RELIEF VAL VE DISCHARGE RV 110 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B21-2596-G 11 B2196G011 MAIN STEAM RELIEF VAL VE DISCHARGE RV 111 Mechanical No DC-2671 Yes (SRV,TSV,TAP,AP)

B2 l-4093-G06 B2193G006 M STM HDR SAF VLV F013N DISCH TO SUP CHA Mechanical No DC-2670 Yes (SRV,TSV,TAP,AP)

B21-4093-Gl l B2193G011 M STM HDR SAF VL V F0 13N DISCH TO SUP CHA Mechanical No DC-2670 Yes (SRV,TSV,TAP,AP)

B2 l-4093-G12 B2193G012 M STM HDR SAF VLV F0 13N DISCH TO SUP CHA Mechanical No DC-2670 Yes (SRV,TSV,TAP,AP)

B21-4093-G13 B2193G013A M STM HDR SAF VL V FO 13N DISCH TO SUP CHA Mechanical No DC-2670 Yes (SRV,TSV,TAP,AP)

B21-4095-G0S B2195G005 M STM HDR SAF VLV F013A DISCH TO SUP CHA Mechanical No DC-2673 Yes (SRV,TSV,TAP,AP)

ATTACHMENT 1 Snubber Program Revision 1 Page 2 of 8 SAFETY RELATED SNUBBERS REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Pipinl! lso Description subsystem B2 l-4095-G08 B2195G008 M STM HDR SAF VL V F0 13A DISCH TO SUP CHA Mechanical No DC-2673 Yes (SRV,TSV,TAP,AP)

B2 l-4096-G08 B2196G008 M STM HDR SAF VL V F0 13F DISCH TO SUP CHA Mechanical No DC-2673 Yes (SRV,TSV,TAP,AP)

B2 l -4096-G 11 B2196G011A M STM HDR SAF VL V F0 13F DISCH TO SUP CHA Mechanical No DC-2673 Yes (SRV,TSV,TAP,AP)

B21-E213-SSA1 B2113G001A MAIN STEAM LOOP "A" Mechanical No DC-2670 Yes (SRV,TSV,AP)

B21-E213-SSA3 B2113G003A MAIN STEAM LOOP "A" Mechanical No DC-2670 Yes (SRV,TSV,AP)

B21-E213-SSB1 B2113G001B MAIN STEAM LOOP "B" Mechanical No DC-2671 Yes (SRV,TSV,AP)

B21-E213-SSB2 B2113G002B MAIN STEAM LOOP "B" Mechanical No DC-2671 Yes (SRV,TSV,AP)

B2 l-E213-SSB3 B2113G003B MAIN STEAM LOOP "B" Mechanical No DC-2671 Yes (SRV,TSV,AP)

B2 l-E213-SSB5 B2113G005B MAIN STEAM LOOP "B" Mechanical No DC-2671 Yes (SRV,TSV,AP)

B21-E213-SSB6 B2113G006B MAIN STEAM LOOP "B" Mechanical No DC-2671 Yes (SRV,TSV,AP)

B21-E213-SSC1 B2113G001C MAIN STEAM LOOP "C" Mechanical No DC-2672 Yes (SRV,TSV,AP)

B21-E213-SSC2 B2113G002C MAIN STEAM LOOP "C" Mechanical No DC-2672 Yes (SRV,TSV,AP)

B21-E213-SSC3 B2113G003C MAIN STEAM LOOP "C" Mechanical No DC-2672 Yes (SRV,TSV,AP)

B21-E213-SSC5 B2113G005C MAIN STEAM LOOP "C" Mechanical No DC-2672 Yes (SRV,TSV,AP)

B21-E213-SSC6 B2113G006C MAIN STEAM LOOP "C" Mechanical No DC-2672 Yes (SRV,TSV,AP)

B21-E213-SSD1 B2113G00ID MAIN STEAM LOOP "D" Mechanical No DC-2673 Yes (SRV,TSV,AP)

B21-E213-SSD2 B2113G002D MAIN STEAM LOOP "D" Mechanical No DC-2673 Yes (SRV,TSV,AP)

B2 l-E213-SSD3 B2113G003D MAIN STEAM LOOP "D" Mechanical No DC-2673 Yes (SRV,TSV,AP)

B31-E215-SSA1 B3115G001A REACTOR RECIRC LOOP A - PUMP SUCT & DISC Mechanical No DC-2674 Yes (AP)

B31-E215-SSA4 B3115G004A REACTOR RECIRC LOOP A - PUMP SUCT & DISC Mechanical No DC-2674 Yes (AP)

B31-E215-SSA5 B3115G005A REACTOR RECIRC LOOP A - PUMP SUCT & DISC Mechanical No DC-2674 Yes (AP)

B3 l -E2 l 5-SSA6 B3115G006A REACTOR RECIRC LOOP A - PUMP SUCT & DISC Mechanical No DC-2674 Yes (AP)

B3 l-E215-SSA7 B3115G007A REACTOR RECIRC LOOP A - PUMP SUCT & DISC Mechanical No DC-2674 Yes (AP)

B31-E215-SSA8 B3115G008A REACTOR RECIRC LOOP A - PUMP SUCT & DISC Mechanical No DC-2674 Yes (AP)

B31-E215-SSB1 B3115G001B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical No DC-2675 Yes (AP)

B31-E215-SSB10 B3115G010B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical Yes**

DC-2675 Yes (AP)

B3 l-E215-SSB4 B3115G004B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical No DC-2675 Yes (AP)

B3 l-E215-SSB5 B3115G005B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical No DC-2675 Yes (AP)

B3 l-E215-SSB6 B3115G006B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical No DC-2675 Yes (AP)

B3 l-E215-SSB7 B3115G007B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical No DC-2675 Yes (AP)

B3 l -E2 l 5-SSB8 B3115G008B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical No DC-2675 Yes (AP)

B3 l -E2 l 5-SSB9 B3115G009B REACTOR RECIRC LOOP B - PUMP SUCT & DISC Mechanical Yes**

DC-2675 Yes (AP)

ATTACHMENT 1 Snubber Program Revision 1 Page 3 of 8 SAFETY RELATED SNUBBERS REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Pipin2: Iso Description subsvstem C41-2340-G08 C4140G008 STANDBY LIQUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C41-2340-G 11 C4140G011 STANDBY LIOUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C41-2340-Gl2 C4140G012 STANDBY LIQUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C41-2340-G 15 C4140G015 STANDBY LIQUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C41-2340-Gl6 C4140G016A STANDBY LIQUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C4 l-2340-G 16 C4140G016B STANDBY LIQUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C4 l-2340-G 17 C4140G017 STANDBY LIOUID CONTROL - DRYWELL Mechanical No DC-2663 Yes (WH)

C41-2979-G0 1 C4179G001A SLC PUMP DISC LINE TO DW PEN & TEST TANK Mechanical No DC-2664 Yes (WH)

C4 l -2979-G0 1 C4179G001B SLC PUMP DISC LINE TO DW PEN & TEST TANK Mechanical No DC-2664 Yes (WH)

E 11-2299-G02 El 199G002 RHR SUPPLY FROM RECIRC PUMP SUCTION DRY Mechanical Yes**

DC-2675 Yes (AP)

El 1-2299-G0S El 199G005 RHR SUPPLY FROM RECIRC PUMP SUCTION DRY Mechanical Yes**

DC-2675 Yes (AP)

E 1 l-2299-G07 El 199G007 RHR SUPPLY FROM RECIRC PUMP SUCTION DRY Mechanical Yes**

DC-2675 Yes (AP)

Ell-2299-Gl9 El 199G019 RHR SUPPLY FROM RECIRC PUMP SUCTION DRY Mechanical Yes**

DC-2675 Yes (AP)

El 1-2299-G20 E1199G020 RHR SUPPLY FROM RECIRC PUMP SUCTION DRY Mechanical Yes**

DC-2675 Yes (AP)

El 1-3154-G 11 El 154G011 NORTH RHR PUMP SUCTION FROM SUP CHAMB Hydraulic No DC-3135 Yes (TAP)

Ell-3154-Gl2 El 154G012 NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No DC-3135 Yes (TAP)

El 1-3154-G 13 El 154G013 NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No DC-3135 Yes (TAP)

Ell-3154-G14 El 154G014 NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No DC-3135 Yes (TAP)

El 1-3154-G19 El 154G019 NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No DC-3135 Yes (TAP)

El 1-3154-G23 El 154G023 NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No DC-3135 Yes (TAP)

El l-3160-G09 El 160G009 RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Mechanical No DC-3123 Yes (TAP)

El 1-3160-G 10 El 160G010 RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

Ell-3160-Gll El 160G01 l RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

El 1-3160-G 13 El 160G013 RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

El 1-3160-Gl 5 El 160G015A RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

El 1-3160-Gl 5 El 160G015B RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

El 1-3160-Gl 6 El 160G016 RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Mechanical No DC-3123 Yes (TAP)

El 1-3160-G 17 El 160G017 RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

El 1-3160-Gl 8 El 160G018 RHR TEST LINE (N) 24" HDR TO SUP CHAMBER Hydraulic No DC-3123 Yes (TAP)

Ell-3161-G09 El 161G009 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Hydraulic No DC-3122 Yes (TAP)

El 1-3161-Gl0 El 161G010 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Hydraulic No DC-3122 Yes (TAP)

El l-3161-Gl2 El 161G012 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Mechanical No DC-3122 Yes (TAP)

ATTACHMENT 1 Snubber Program Revision 1 Page 4 of 8 SAFETY RELATED SNUBBERS REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Piping lso Description subsystem EI 1-3161-GB El 1610013 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Hydraulic No DC-3122 Yes (TAP)

E 11-3161-G 14 El 1610014 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Mechanical No DC-3122 Yes (TAP)

El l-3161-Gl6 Ell61G016 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Hydraulic No DC-3122 Yes (TAP)

El 1-3161-Gl?

Ell61G017 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Mechanical No DC-3122 Yes (TAP)

Ell-3161-G 18 El 161G018 RHR TEST LINE (S) FROM 24" HDR TO SUP CH Mechanical No DC-3122 Yes (TAP)

El l-3 l 78-Gl3 Ell78G013 RHR MIN FL W BYP (N) FRM PMP DIS HDR TO T Mechanical No DC-3161 Yes (TAP)

El 1-4251-Gl?

El 151G017A RELIEF LINES FRM RHR RET NORTH AND SOUTH Mechanical No DC-3165 Yes (TAP)

El l-461 l-Gl4 El ll 1G014 RELIEF LINE FROM RHR HEAT EXCHANGER (S)

Hydraulic No DC-3122 Yes (TAP)

E21-2199-G04 E2199G004 CS RLF LNS FRM CS PMP DIS N&S TO CS TEST Mechanical No DC-3175 Yes (TAP)

E21-2199-G05 E2199G005 CS RLF LNS FRM CS PMP DIS N&S TO CS TEST Mechanical No DC-3175 Yes (TAP)

E21-2199-Gl0 E2199G0IO CS RLF LNS FRM CS PMP DIS N&S TO CS TEST Hydraulic No DC-3170 Yes (TAP)

E21-2199-Gll E2199G011 CS RLF LNS FRM CS PMP DIS N&S TO CS TEST Hydraulic No DC-3170 Yes (TAP)

E21-3052-G08 E2152G008 DIV 1 (N) CORE SPRAY PIPING TO THE DW Mechanical No DC-2648 Yes (AP)

E21-3052-G09 E2152G009A DIV 1 (N) CORE SPRAY PIPING TO THE DW Mechanical No DC-2648 Yes (AP)

E21-3052-G09 E2152G009B DIV 1 (N) CORE SPRAY PIPING TO THE DW Mechanical No DC-2648 Yes (AP)

E2 l-3053-G04 E2153G004 DIV 2 (S) CORE SPRAY PIPING INSIDE DW Mechanical No DC-2647 Yes (AP)

E21-3053-GIO E2153G010A DIV 2 (S) CORE SPRAY PIPING INSIDE DW Mechanical No DC-2647 Yes (AP)

E21-3053-Gl0 E2153G010B DIV 2 (S) CORE SPRAY PIPING INSIDE DW Mechanical No DC-2647 Yes (AP)

E21-3145-G08 E2145G008 NORTH CS MIN LOW-FLOW BYPASS & TEST LINE Hydraulic No DC-3141 Yes (TAP)

E21-3145-Gl2 E2145G012 NORTH CS MIN LOW-FLOW BYPASS & TEST LINE Hydraulic No DC-3172 Yes (TAP)

E2 l-3145-G 16 E2145G016 NORTH CS MIN LOW-FLOW BYPASS & TEST LINE Hydraulic No DC-3172 Yes (TAP)

E21-3145-Gl7 E2145G017 NORTH CS MIN LOW-FLOW BYPASS & TEST LINE Hydraulic No DC-3172 Yes (TAP)

E21-3145-G23 E2145G023 NORTH CS MIN LOW-FLOW BYPASS & TEST LINE Hydraulic No DC-3172 Yes (TAP)

E21-3150-G07 E2150G007 SCORE SPRAYMINLOWFLOWBY-PASS & TEST Hydraulic No DC-3140 Yes (TAP)

E2 l-3 l 50-G08 E2150G008 SCORE SPRAY MIN LOW FLOW BY-PASS & TEST Hydraulic No DC-3140 Yes (TAP)

E41-3162-G20 E4162G020 HPCI TURBINE EXHAUST Hydraulic No DC-3132 Yes (TAP)

E4 l-3 l 62-G25 E4162G025 HPCI TURBINE EXHAUST Mechanical No DC-3132 Yes (TAP)

E4 l-3 l 62-G26 E4162G026 HPCI TURBINE EXHAUST Mechanical No DC-3132 Yes (TAP)

E41-3163-Gl7 E4163G017 HPCI BOOSTER PUMP SUCTION FRM SUP CHAMB Mechanical No DC-3138 Yes (TAP)

E41-3163-G 18 E4163G018 HPCI BOOSTER PUMP SUCTION FRM SUP CHAMB Hydraulic No DC-3138 Yes (TAP)

E41-3163-Gl9 E4163G019 HPCI BOOSTER PUMP SUCTION FRM SUP CHAMB Mechanical No DC-3138 Yes (TAP)

E4l-3165-G 18 E4165G018 HPCI MIN FLOW BYP FRM PMP DISC TO CSS TE Hydraulic No DC-3168 Yes (TAP)

ATTACHMENT 1 Snubber Program Revision 1 Page 5 of 8 SAFETY RELATED SNUBBERS REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Pioine: Iso Description subsystem E41-3165-G26 E4165G026 HPCI MIN FLOW BYP FRM PMP DISC TO CSS TE Hydraulic No DC-3168 Yes (TAP)

E41-3167-Gl4 E4167G014 HPCI PUMP DISC TO S REACTOR FW HEADER Mechanical No DC-2660 Yes (RFP)

W-E41-5256-G20 E4156G020A TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No DC-3151 Yes (TAP)

W-E41-5256-G20 E4156G020B TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No DC-3151 Yes (TAP)

W-E41-5256-G20 E4156G020C TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No DC-3151 Yes (TAP)

W-E41-5256-G21 E4156G021 TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No DC-3151 Yes (TAP)

W-E41-5256-G22 E4156G022S TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No DC-3151 Yes (TAP)

E51-3166-G44 E5166G044 RCIC PUMP SUCTION FROM RHR HX'S N & S Mechanical No DC-3185 Yes (TAP)

E51-3174-G21 E5174G021 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No DC-3124 Yes (TAP)

E5 l -31 7 6-Gl 7 E5176G017 RCIC sue FRM SUP CHAMB & COND STOR Hydraulic No DC-3139 Yes (TAP)

G51-4055-G08 G5155G008 TWMS PUMP (S) SUCT FRM TORUS PENE X213A Mechanical No DC-3125 Yes (TAP)

G51-4055-G20 G5155G020 TWMS PUMP (S) SUCT FRM TORUS PENE X213A Mechanical No DC-3125 Yes (TAP)

G51-4055-G23 G5155G023 TWMS PUMP (S) SUCT FRM TORUS PENE X213A Mechanical No DC-3125 Yes (TAP)

G51-4056-G20 G5156G020 TWMS PUMP (N) SUCT FRM TORUS PENE X213B Mechanical No DC-3126 Yes (TAP)

G5 l -4056-G2 l G5156G021 TWMS PUMP (N) SUCT FRM TORUS PENE X213B Mechanical No DC-3126 Yes (TAP)

G5 l-4059-Gl5 G5159G015 TWMS RET FRM COND DEMIN TO RHR TEST LINE Hydraulic No DC-3160 Yes (TAP)

GS 1-4059-G 17B G5159G017B TWMS RET FRM COND DEMIN TO RHR TEST LINE Mechanical No DC-3160 Yes (TAP)

G5 l-4059-G20 G5159G020 TWMS RET FRM COND DEMIN TO RHR TEST LINE Mechanical No DC-3160 Yes (TAP)

G5 l-4059-G2 l G5159G021 TWMS RET FRM COND DEMIN TO RHR TEST LINE Mechanical No DC-3160 Yes (TAP)

N21-313 l-G44 N2131G44 FEEDWATER LOOP A OUTSIDE DRYWELL Mechanical No DC-2660 Yes (WH)

N21-3131-G45 N2131G45 FEEDWATER LOOP A OUTSIDE DRYWELL Mechanical No DC-2660 Yes (WH)

N21-313 l-G46 N2131G46 FEEDWATER LOOP B OUTSIDE DRYWELL Mechanical No DC-2659 Yes (WH)

N21-3536-G26 N2136G026A REACTOR FEEDWATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G26 N2136G026B REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G27 N2136G027 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G28 N2136G028 REACTOR FEEDWATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G29 N2136G029A REACTOR FEEDW ATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G29 N2136G029B REACTOR FEEDWATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G30 N2136G030 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G31 N2136G031 REACTOR FEEDW ATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G32 N2136G032 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G33 N2136G033 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

ATTACHMENT 1 Snubber Program Revision 1 Page 6 of 8 SAFETY RELATED SNUBBERS REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Pipin2: lso Description subsystem N21-3536-G34 N2136G034 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G35 N2136G035 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G36 N2136G036 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G37 N2136G037 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21 -3536-G38 N2136G038A REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G38 N2136G038B REACTORFEEDWATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3536-G39 N2136G039 REACTOR FEED WATER PIPING (N) INSIDE DW Mechanical No DC-2657 Yes (AP)

N21-3537-G26 N2137G026A REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G26 N2137G026B REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G27 N2137G027 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G28 N2137G028 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G29 N2137G029A REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G29 N2137G029B REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G30 N2137G030 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G31 N2137G031 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G32 N2137G032 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G33 N2137G033 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G34 N2137G034 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G35 N2137G035 REACTOR FEEDWATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G36 N2137G036 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G37 N2137G037 REACTOR FEEDWATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G38 N2137G038A REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G38 N2137G038B REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N21-3537-G39 N2137G039 REACTOR FEED WATER PIPING SOUTH INSIDE DW Mechanical No DC-2658 Yes (AP)

N30-3258-G 18 N3058G018 MAIN STEAM FROM DW TO TURBINE MANIFOLD Mechanical No DC-2995 Yes (TSV)

N30-3258-G 19 N3058G019 MAIN STEAM FROM DW TO TURBINE MANIFOLD Mechanical No DC-2995 Yes (TSV)

N30-3258-G20 N3058G020 MAIN STEAM FROM DW TO TURBINE MANIFOLD Mechanical No DC-2995 Yes (TSV)

N30-3259-G21 N3059G021 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G22 N3059G022 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G23 N3059G023 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G24 N3059G024 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G26 N3059G026 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

ATTACHMENT 1 Snubber Program Revision 1 Page 7 of 8 SAFETY RELATED SNUBBER$ REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY Snubber More than Pipe Stress Dynamic Loads ARMS Hanger Type one division/ Calculation Mode 1,2,3 DSN PIS Number Pioin2: Iso Description subsystem N30-3259-G28 N3059G028 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G29 N3059G029 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G30 N3059G030 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G31 N3059G031 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G32 N3059G032 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G33 N3059G033 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G34 N3059G034 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G35 N3059G035 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G36 N3059G036 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G37 N3059G037 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G38 N3059G038 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G39 N3059G039 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G44 N3059G044 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G45 N3059G045 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G46 N3059G046 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G47 N3059G047 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G48 N3059G048 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G49 N3059G049 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G50 N3059G050 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G51 N3059G051 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G52 N3059G052 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G53 N3059G053 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G54 N3059G054 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G55 N3059G055 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G56 N3059G056 52" MAIN STEAM MANIFOLD & PIPING IN TB Hydraulic No DC-2995 Yes (TSV)

N30-3259-G57 N3059G057 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G58 N3059G058 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G67 N3059G067 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G68 N3059G068 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G75B N3059G075B 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G76 N3059G076 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

N30-3259-G77 N3059G077 52" MAIN STEAM MANIFOLD & PIPING IN TB Mechanical No DC-2995 Yes (TSV)

ATTACHMENT 1 Snubber Program Revision 1 Page 8 of 8 SAFETY RELATED SNUBBERS REQUIRING ADDITIONAL EVALUATION FOR LCO 3.0.8 APPLICABILITY ARMS Hanger DSN PIS Number N30-3259-G78 N3059G078 N30-3259-G81 N3059G081 N30-3259-G83 N3059G083 N30-3259-G84 N3059G084 T48-2366-G25 T4866G025 T48-2366-G26 T4866G026A T48-2366-G26 T4866G026B Nomenclature:

Notes:

Pioin2: Iso Description 52" MAIN STEAM MANIFOLD & PIPING IN TB 52" MAIN STEAM MANIFOLD & PIPING IN TB 52" MAIN STEAM MANIFOLD & PIPING IN TB 52" MAIN STEAM MANIFOLD & PIPING IN TB COMB GAS (P-LOCA HYDR RECOM) SUP F TORUS COMB GAS (P-LOCA HYDR RECOM) SUP F TORUS COMB GAS (P-LOCA HYDR RECOM) SUP F TORUS AP RFP SRV TAP Annulus Pressurization Reactor Feed Pump Trip-see note 4 Safety Relief Valve Discharge Torus Attached Piping (Mark I Loads)

Snubber More than Type one division/

subsystem Mechanical No Mechanical No Mechanical No Mechanical No Mechanical No Hydraulic No Hydraulic No TAP 10%

TSV TAP Loads are not Significant [PUAAG, Section 6.2(c)] - see note 2 Turbine Stop Valve Closure WH Waterhammer Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2995 Yes (TSV)

DC-2995 Yes (TSV)

DC-3129 Yes (TAP)

1. Dynamic loads are those applied to the piping system in the design stress analysis report(s). Small dynamic loads (e.g. small relief valve discharge) neglected in the stress analysis are not considered applied to the snubbers.

2.

Snubbers attached to torus-attached piping are considered to sustain Mark I loads only up to the point where the 10% criteria is met as defined in the stress report.

3. RHR snubbers on piping common to both divisions are considered to support Division 1 & 2 up to the first three-way support(s) on each division piping.

System impact as follows: Snubbers designated as Yes* are multi-divisional for LPCI. Snubbers designated as Yes** are multi-divisional for SDC.

4. For HPCI/RCIC/RWCU pump discharge piping snubbers, RFP trip loads are not considered. These piping systems can be decoupled from the feedwater piping analysis and the dynamic movements at the interface are small. In addition, it is also highly likely that HPCI/RCIC would be isolated when the RFP trips.

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Program Revision 1 Page 1 of 16 The use ofLCO 3.0.8 is allowed due to no 'other' dynamic loads on the snubber. Refer to table below in conjunction with 24.000.01, Attachment 19 to determine LCO condition if system is required to be operable.

Snubber Type More than Pipe Stress Dynamic Loads ARMS Hanger one division, Calculation Mode 1,2,3 DSN PIS Number Pioinl! Iso Description subsystem B21-2174-G25B B2174G025A MS DRAINS - STEAM TUNNEL Mechanical No DC-2666 No B21-2174-G25B B2174G025B MS DRAINS - STEAM TUNNEL Mechanical No DC-2666 No B21-2187-G81 B2187G081 RPV VENT LINE - DRYWELL Mechanical No DC-2667 No IW-B21-7195-G0l B2195G001A M STM ISO VL V LEAKAGE SYSTEM CONTROL AIR Mechanical No DC-2243 No IW-B21-7195-G0 1 B2195G001B M STM ISO VL V LEAKAGE SYSTEM CONTROL AIR Mechanical No DC-2243 No W-B31-5064-G24 B3164G024 REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1909 No W-B3 l-5065-G39 B3165G039A REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1865 No W-B3 l-5065-G39 B3165G039B REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1865 No W-B3 l-5065-G39 B3165G039C REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1865 No W-B31-5065-G40 B3165G040 REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1865 No W-B3 l-5065-G41 B3165G041 REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1865 No W-B3 l-5239-G02 B3139G002A REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1909 No W-B3 l-5239-G02 B3139G002B REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1909 No W-B3 l-5239-G06 B3139G006 REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1909 No W-B3 l-5239-Gl6 B3139G016 REACTOR RECIRC PUMP SEAL PURGE LINE Mechanical No DC-1909 No Ell-3035-G25 El 135G025 RHR HEAD SPRAY FROM RET HDR TO DW PENE Hydraulic No DC-2655 No El l-3146-G08 El 146G008 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical Yes*

DC-2653 No El 1-3146-G 10 El 146G010 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Hydraulic Yes*

DC-2653 No Ell-3146-G 16 El 146G016 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Hydraulic Yes*

DC-2653 No Ell-3146-Gl 7 El 146G017A RHR RET (N) FROM RHR HX TO DW PENE Xl3B Hydraulic Yes*

DC-2653 No Ell-3146-Gl 7 El 146G017B RHR RET (N) FROM RHR HX TO DW PENE Xl3B Hydraulic Yes*

DC-2653 No El l-3146-G21 El 146G021 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No Ell-3146-G22 El 146G022 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No Ell-3146-G23 El 146G023 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No El l-3146-G25 El 146G025 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No Ell-3146-G26 Ell46G026 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No El l-3146-G29 Ell46G029 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No El l-3146-G33 El 146G033 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical Yes*

DC-2653 No El l-3146-G34 El 146G034 RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No DC-2966 No

ARMS Hanger DSN PIS Number Ell-3146-G35 Ell46G035A El l-3146-G35 Ell46G035B El l-3146-G37 Ell46G037A El l-3146-G37 El 146G037B El l-3151-G07 El 151G007 El 1-3151-G0S El 151G008 El 1-3151-G 10 El 151G0I0A El 1-3151-G 10 El 151G0IOB El l-315 l-Gl3 Ell51G013 E 11-3151-G 15 El 151G015 El l-3151-Gl6 El 151G016 Ell-3151-Gl 7 El 151G017 E 11-3151-G I 8 El 151G0I8 El l-3151-G23 El 151G023A El l-3151-G23 El 151G023B Ell-3151-G26 El 151G026 El l-3151-G31 Ell51G031 El l-3151-G32 Ell51G032 El l-3151-G33 El 151G033 El l-315 l-G35 El 151G035 El l-3152-Gl7 Ell52G017A El 1-3152-Gl 7 Ell52G017B El 1-3152-GIS El 152G018 Ell-3152-Gl 9 El 152G019 El l-3152-G20 El 152G020 Ell-3152-G2 l El 152G021 El l-3152-G22 El 152G022 El l-3152-G24 El 152G024 El l-3152-G25 El 152G025 El l-3152-G29 Ell52G029A El l-3152-G29 El 152G029B El l-3152-G30 Ell52G030 ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than one division, Piping Iso Description subsystem RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No RHR RET (N) FROM RHR HX TO DW PENE Xl3B Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Hydraulic No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Hydraulic No RHR RET (S) FROM RHR HX TO DW PENE X13A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Hydraulic No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Hydraulic No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical Yes*

RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical Yes*

RHR RET (S) FROM RHR HX TO DW PENE Xl3A Hydraulic No RHR RET (S) FROM RHR HX TO DW PENE X13A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Hydraulic No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical No RHR RET (S) FROM RHR HX TO DW PENE Xl3A Mechanical No RHR SUPPLY HDR Hydraulic Yes**

RHR SUPPLY HDR Hydraulic Yes**

RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Mechanical No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No RHR SUPPLY HDR Hydraulic No Snubber Program Revision 1 Page 2 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2653 No DC-2653 No DC-2653 No DC-2653 No DC-2653 No DC-2653 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2653 No DC-2653 No DC-2965 No DC-2965 No DC-2965 No DC-2653 No DC-2653 No DC-2654 No DC-2654 No DC-2654 No DC-2654 No DC-2654 No DC-2654 No DC-3134 No (TAP 10%)

DC-3134 No (TAP 10%)

DC-2654 No DC-2654 No DC-3134 No (TAP 10%)

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division/

DSN PIS Number Pioin!! lso Descriotion subsystem El 1-3152-G31 Ell52G031A RHR SUPPLY HDR Mechanical No Ell-3152-G31 Ell52G031B RHR SUPPLY HDR Mechanical No El 1-3152-032 El 1520032 RHR SUPPLY HDR Mechanical No Ell-3152-G33 Ell52G033 RHR SUPPLY HDR Mechanical No El 1-3152-G34 El 1520034 RHR SUPPLY HDR Mechanical Yes**

Ell-3153-G13 El 1530013 SOUTH RHR PUMP SUCTION FROM SUP CHAMB Hydraulic No Ell-3153-Gl5 El153G015A SOUTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No El 1-3153-Gl5 Ell53G015B SOUTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No Ell-3154-G 16 El 1540016 NORTH RHR PUMP SUCTION FROM SUP CHAMB Hydraulic No El 1-3154-G 17 Ell54G017 NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No Ell-3154-G2 l El154G021A NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No El 1-3154-G21 El 154G021B NORTH RHR PUMP SUCTION FROM SUP CHAMB Mechanical No Ell-3157-G08 El 1570008 RHR PUMP DISCH NORTH Hydraulic No El 1-3157-GlO El 1570010 RHR PUMP DISCH NORTH Hydraulic No Ell-3157-Gl 1 El 157G01 l RHR PUMP DISCH NORTH Hydraulic No Ell-3157-Gl5 El 1570015 RHR PUMP DISCH NORTH Hydraulic No Ell-3157-Gl6 El 1570016 RHR PUMP DISCH NORTH Mechanical No Ell-3157-Gl7 El 1570017 RHR PUMP DISCH NORTH Mechanical No El 1-3157-020 El 1570020 RHR PUMP DISCH NORTH Hydraulic No Ell-3157-G22 El 1570022 RHR PUMP DISCH NORTH Hydraulic No Ell-3158-G07 El 1580007 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Ell-3158-G08 El 1580008 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No El 1-3158-GlO El 158G010 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No El 1-3158-Gl2 El 158G012 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No El 1-3158-G 15 El 1580015 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Ell-3158-G 16 El 158G016 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Ell-3158-G 17 E1158G017 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No El 1-3158-G 19 El 1580019 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Ell-3158-G20 El 1580020 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Ell-3 158-G22 El 1580022 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Ell-3158-G24 Ell58G024 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Mechanical No El 1-3158-G29 Ell58G029 RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No Snubber Program Revision 1 Page 3 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3134 No (TAP 10%)

DC-3134 No (TAP 10%)

DC-2654 No DC-3134 No (TAP 10%)

DC-3134 No (TAP 10%)

DC-3135 No (TAP 10%)

DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2966 No DC-2965 No

ARMS Hanger DSN PIS Number Ell-3158-G30 El 158G030 Ell-3158-G31 Ell58G031 Ell-3158-G34 El 158G034 El l-3159-G02 El 159G002 El l-3159-G03 El 159G003 Ell-3159-G0S El 159G005 Ell-3159-G07 El 159G007 Ell-3159-G 11 El 159G01 l El 1-3164-G 14 El 164G014 El l-3164-Gl8 El 164G018 El 1-3164-GI 9 El 164G019 El l-3164-G22 El 164G022 El l-3164-G23 El 164G023 El l-3164-G24 El 164G024 Ell-3164-G26 El 164G026 El l-3164-G27 El 164G027 Ell-3177-G09 El 177G009 E 11-3177-G 10 Ell 77G010 El l-3177-G20 Ell77G020 El l-3177-G21 Ell77G021 El l-3177-G23 Ell77G023 El l-3 l 77-G25 Ell 77G025 Ell-3177-G27 El I 77G027 Ell-3177-G31 El 177G031 Ell-3177-G32 Ell77G032 El 1-3179-G0S Ell79G005 El l-3184-G07 El 184G007A El l-3184-G07 El 184G007B El 1-3184-GlS El 184G0l5A El 1-3184-G 15 El 184G015B Ell-3184-G24 El 184G024 Ell-3184-G25 El 184G025 ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBER$

Snubber Type More than one division, Piping lso Description subsystem RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No RHR PUMPS (N&S) DISCH TO HEAT EXCHANGERS Hydraulic No RHR CONTMT SPRAY (N) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (N) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (N) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (N) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (N) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Mechanical No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Mechanical No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Hydraulic No RHR CONTMT SPRAY (S) FROM HDR TO RPY YES Mechanical No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PUMP DISCH SOUTH Hydraulic No RHR PMP (S) MIN FL W BYP FRM PMP DIS TO T Mechanical No RHR SW SUPPLY & RETURN TO RX'S (S)

Hydraulic No RHR SW SUPPLY & RETURN TO RX'S (S)

Mechanical No RHR SW SUPPLY & RETURN TO RX'S (S)

Hydraulic No Snubber Program Revision 1 Page 4 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2965 No DC-2965 No DC-2966 No DC-2972 No DC-2972 No DC-2972 No DC-2972 No DC-2972 No DC-2967 No DC-2967 No DC-2967 No DC-2967 No DC-2967 No DC-2967 No DC-2967 No DC-2967 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2974 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No

ARMS Hanger DSN PIS Number Ell-3 l 84-G31 El 184G031 Ell-3184-G38 Ell84G038 Ell-3184-G39 El 184G039 E 11-3184-G41 E1184G041 El 1-3 l 84-G45 El 184G045 Ell-3185-G22 El 185G022 Ell-3185-G23 El 185G023 Ell-3185-G32 El 185G032A Ell-3185-G32 El 185G032B Ell-3185-G36 El 185G036 Ell-3185-G37 E1185G037 Ell-3185-G38 El 185G038 El 1-3185-G4 l E1185G041 El 1-3185-G48 E1185G048 El 1-3185-G49 El 185G049 El 1-3185-GS0 El 185G050 Ell-3185-GS 1 Ell85G051 Ell-3185-G54 El 185G054 Ell-3185-GSS El 185G055 El 1-3185-G56 El 185G056 El 1-3185-G57 El 185G057 El 1-3519-Gl4 El 119G014 W-El 1-4004-G0I El 104G00IS W-E 11-4004-G02 El 104G002A W-El 1-4004-G02 El 104G002B W-El 1-4004-G22 El 104G022 W-El 1-4011-G04 El 111G004 W-El 1-4011-G09 El 11 IG009S El 1-4612-G04 Ell 12G004A El 1-4612-G04 Ell 12G004B Ell -4612-G07 El 112G007A El l-4612-G07 El 112G007B ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than one division, Pioin2 lso Description subsystem RHR SW SUPPLY & RETURN TO HX'S (S)

Hydraulic No RHR SW SUPPLY & RETURN TO HX'S (S)

Mechanical No RHR SW SUPPLY & RETURN TO HX'S (S)

Mechanical No SW SUP & RET FRM COL ROW A TO RHR HX (N)

Hydraulic No SW SUP & RET FRM COL ROW A TO RHR HX (N)

Mechanical No SW SUP & RET FRM COL ROW A TO RHR HX (N)

Hydraulic No SW SUP & RET FRM COL ROW A TO RHR HX (N)

Mechanical No SW SUP & RET FRM COL ROW A TO RHR HX (N)

Hydraulic No SW SUP & RET FRM COL ROW A TO RHR HX (N)

Hydraulic No HEAD SPRAY PIPING IN DRYWELL Mechanical No LINES FROM NORTH RHR HEAT EXCHANGER Mechanical No LINES FROM NORTH RHR HEAT EXCHANGER Mechanical No LINES FROM NORTH RHR HEAT EXCHANGER Mechanical No LINES FROM NORTH RHR HEAT EXCHANGER Mechanical No LINES FROM NORTH RHR HEAT EXCHANGER Mechanical No LINES FROM NORTH RHR HEAT EXCHANGER Mechanical No RELIEF LINE FROM RHR HEAT EXCHANGER (N)

Hydraulic No RELIEF LINE FROM RHR HEAT EXCHANGER (N)

Hydraulic No Snubber Program Revision 1 Page 5 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2965 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2966 No DC-2656 No DC-1803 No DC-1803 No DC-1803 No DC-1803 No DC-0927 No DC-0927 No DC-2971 No DC-2971 No DC-2971 No DC-2971 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division/

DSN PIS Number Pioine: lso Description subsystem W-Ell-5166-G0S El 166G005 VENT & RELIEF LINES FROM SOUTH RHR HX Mechanical No W-El l-5302-Gl9 El 102G019 VENT PIPING-RHR PUMPS DICHARGE TO HX'S Mechanical No E21-3144-G23 E2144G023 NORTH CS PUMP DISCHARGE TO RPV PENE Hydraulic No E21-3144-G26 E2144G026 NORTH CS PUMP DISCHARGE TO RPV PENE Hydraulic No E21-3144-G30 E2144G030 NORTH CS PUMP DISCHARGE TO RPV PENE Hydraulic No E21-3144-G32 E2144G032 NORTH CS PUMP DISCHARGE TO RPV PENE Hydraulic No E21-3147-G05 E2147G005 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G06 E2147G006 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G08 E2147G008 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G09 E2147G009 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G26 E2147G026 CS PUMPS (S) DISCHARGE TO RPV PENE Mechanical No E21-3147-G27 E2147G027 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G28 E2147G028 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G29 E2147G029 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G30 E2147G030 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G34 E2147G034 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3147-G37 E2147G037 CS PUMPS (S) DISCHARGE TO RPV PENE Hydraulic No E21-3150-G09 E2150G009 SCORE SPRAY MIN LOW FLOW BY-PASS & TEST Hydraulic No W-E21-5300-G06 E2100G006 CORE SPRAY SYSTEM VENT LINES Mechanical No E41-3162-G 17 E4162G017 HPCI TURBINE EXHAUST Hydraulic No E41-3162-G22 E4162G022 HPCI TURBINE EXHAUST Hydraulic No E41-3162-G23 E4162G023 HPCI TURBINE EXHAUST Hydraulic No E41-3162-G24 E4162G024 HPCI TURBINE EXHAUST Mechanical No E41-3167-G 17 E4167G017 HPCI PUMP DISC TO S REACTOR FW HEADER Hydraulic No E41-3 l 72-Gl 1 E4172G01 l STEAM SUPPLY FRM RPV TO HPCI TURB STOP V Hydraulic No E41-3 l 72-Gl2 E4172G012 STEAM SUPPLY FRM RPV TO HPCI TURB STOP V Hydraulic No E41-3 l 72-Gl6 E4172G016 STEAM SUPPLY FRM RPV TO HPCI TURB STOP V Hydraulic No E41-3172-Gl9 E4172G019 STEAM SUPPLY FRM RPV TO HPCI TURB STOP V Mechanical No E41-3172-G20 E4172G020 STEAM SUPPLY FRM RPV TO HPCI TURB STOP V Hydraulic No E41-3172-G26 E4172G026 STEAM SUPPLY FRM RPV TO HPCI TURB STOP V Mechanical No W-E4 l-5256-G02 E4156G002 TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No W-E41-5256-G03 E4156G003 TURBINE PUMP EXHAUST DRAIN HPCI SYSTEM Mechanical No Snubber Program Revision 1 Page 6 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-0927 No DC-2022 No DC-2650 No DC-3141 No (TAP 10%)

DC-3141 No (TAP 10%)

DC-3140 No (TAP 10%)

DC-2649 No DC-3140 No (TAP 10%)

DC-3140 No (TAP 10%)

DC-3184 No (TAP 10%)

DC-2021 No DC-3132 No (TAP 10%)

DC-3132 No (TAP 10%)

DC-2660 No DC-2662 No DC-2662 No DC-2662 No DC-2662 No DC-2662 No DC-2662 No DC-2007 No DC-2007 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division, DSN PIS Number Pivin!!: lso Description subsystem E5 l-3 l 74-G09 E5174G009 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Mechanical No E5 l-3 l 74-G09A E5174G009A RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Mechanical No E5 l-3 l 74-G09C E5174G009C RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Mechanical No ESl-3174-G 17 E5174G017 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E51-3 l 74-G25 E5174G025 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E5 l-3 l 74-G30 E5174G030 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Mechanical No E5 l-3 l 74-G32 E5174G032 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E51-3 l 74-G33 E5174G033 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E51-3 l 74-G34 E5174G034 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E51-3 l 74-G36 E5174G036 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E5 l-3 l 74-G39 E5174G039 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No E51-3 l 74-G40 E5174G040 RCIC TURBINE STEAM SUPPLY & EXHAUST PIPE Hydraulic No ESl-3175-G0l E5175G001 RCIC PUMP DISCHARGE TO FEEDWATER LINE Hydraulic No E5 l-3 l 75-G02 E5175G002 RCIC PUMP DISCHARGE TO FEEDWATER LINE Hydraulic No E5 l-3 l 75-G06 E5175G006 RCIC PUMP DISCHARGE TO FEED WATER LINE Hydraulic No E5 l-3 l 75-G07 E5175G007 RCIC PUMP DISCHARGE TO FEED WATER LINE Hydraulic No ESl-3175-G 12 E5175G012 RCIC PUMP DISCHARGE TO FEEDWATERLINE Hydraulic No ESl-3175-G 13 E5175G013 RCIC PUMP DISCHARGE TO FEED WATER LINE Hydraulic No E51-3 l 75-G2 l E5175G021 RCIC PUMP DISCHARGE TO FEED WATER LINE Hydraulic No E51-3 l 75-G22 E5175G022 RCIC PUMP DISCHARGE TO FEEDWATER LINE Hydraulic No E5 l-3 l 75-G24 E5175G024 RCIC PUMP DISCHARGE TO FEEDWATER LINE Hydraulic No E51-3 l 75-G25 E5175G025 RCIC PUMP DISCHARGE TO FEED WATER LINE Hydraulic No E51-3175-G26 E5175G026 RCIC PUMP DISCHARGE TO FEEDW ATER LINE Hydraulic No E51-3175-G27 E5175G027 RCIC PUMP DISCHARGE TO FEED WATER LINE Hydraulic No Gll-3658-G47 Gll58G047 6" EQUIPMENT DRAIN TO WAST COLL TANK Mechanical No Gll-3659-G46 Gll59G046 FLOOR DRAIN TO FLOOR DRAIN COLLECTOR TAN Mechanical No G33-3096-G27 G3396G027 REACTOR WATER CLEAN-UP SYSTEM IN DW Mechanical No G33-3244-G36 G3344G036A REACTOR WATER CLEAN-UP (PUMP SUCT)

Hydraulic No G33-3244-G36 G3344G036B REACTOR WATER CLEAN-UP (PUMP SUCT)

Hydraulic No G33-3244-G37 G3344G037 REACTOR WATER CLEAN-UP (PUMP SUCT)

Hydraulic No G33-3244-G38 G3344G038 REACTOR WATER CLEAN-UP (PUMP SUCT)

Hydraulic No G33-3244-G39 G3344G039 REACTOR WATER CLEAN-UP (PUMP SUCT)

Mechanical No Snubber Program Revision 1 Page 7 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2661 No DC-2659 No (RFP)

DC-2659 No (RFP)

DC-2659 No(RFP)

DC-2659 No (RFP)

DC-0832 No DC-0832 No DC-2652 No DC-2652 No DC-2652 No DC-2652 No DC-2652 No DC-2652 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division, DSN PIS Number Pioin!! lso Descriotion subsystem G33-3245-G30 G3345G030 REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G32 G3345G032 REACTOR WATER CLEAN-UP PUMP DISCHARGE Mechanical No G33-3245-G33 G3345G033 REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G37 G3345G037 REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G38 G3345G038A REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G38 G3345G038B REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G45 G3345G045 REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G47 G3345G047 REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G49 G3345G049A REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G49 G3345G049B REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G33-3245-G67 G3345G067 REACTOR WATER CLEAN-UP PUMP DISCH Mechanical No G5 l-4056-G03 G5156G003 TWMS PUMP (N) SUCT FRM TORUS PENE X213B Mechanical No N2 l-3536-G40 N2136G040 REACTORFEEDWATERPIPING (N) INSIDE DW Mechanical No N30-2186-G03 N3086G003 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-G04 N3086G004 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2 l 86-G05 N3086G005 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N3 0-2 l 86-G07 N3086G007 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-G09 N3086G009 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl0 N3086G010 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl 1 N3086G011 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl3 N3086G013 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl4 N3086G014 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2 l 86-G 15 N3086G015 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl6 N3086G016 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl7 N3086G017 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-2186-Gl8 N3086G018 MS DRAINS FROM MS HDR TO DRAIN MANIFOLD Mechanical No N30-3526-G46 N3026G046 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G48 N3026G048 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G51 N3026G05 1 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G52 N3026G052 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G53 N3026G053 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G54 N3026G054 DRYWELL MAIN STEAM DRAIN Mechanical No Snubber Program Revision 1 Page 8 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2659 No (RFP)

DC-2659 No (RFP)

DC-0872 No DC-0872 No DC-0872 No DC-0872 No DC-2659 No (RFP)

DC-0872 No DC-0872 No DC-0872 No DC-3126 No (TAP 10%)

DC-2659 No (RFP)

DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2992 No DC-2665 No DC-2665 No DC-2665 No DC-2665 No DC-2665 No DC-2665 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division, DSN PIS Number Pivin!! Iso Descriotion subsystem N30-3526-G55 N3026G055 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G57 N3026G057 DRYWELL MAIN STEAM DRAIN Mechanical No N30-3526-G58 N3026G058 DRYWELL MAIN STEAM DRAIN Mechanical No Pl l-2808-G20 Pl 108G020 DEMINERALIZED WATER SERV RISERS & HDRS Hydraulic No Pl l-3156-G05 Pl 156G005 CS FLUSH & FILL CON FRM DEMIN HDR TO CS Mechanical No Pl l-3566-G08 Pl 166G008 DEMINERALIZED SERVICE WATER PIPING DW Mechanical No Pl l-3566-G09 Pl 166G009 DEMINERALIZED SERVICE WATER PIPING DW Hydraulic No Pll-3566-Gl l Pll66G011 DEMINERALIZED SERVICE WATER PIPING DW Mechanical No P34-7405-G02 P3405G002 AIR SAMPLE PIPE MANIFOLD Mechanical No P34-7405-G05 P3405G005 AIR SAMPLE PIPE MANIFOLD Mechanical No P34-7405-G07 P3405G007 AIR SAMPLE PIPE MANIFOLD Mechanical No W-P42-4357-G22 P4257G022A RBCCW & EECW SUPPLY & RET TO DW PENE'S Mechanical No W-P42-4357-G22 P4257G022B RBCCW & EECW SUPPLY & RET TO DW PENE'S Mechanical No W-P50-2163-G 13 P5063G013 STATION AIR TO PENETRATION Mechanical No W-P50-2163-G14 P5063G014 STATION AIR TO PENETRATION Mechanical No W-P50-2163-Gl5 P5063G015A STATION AIR TO PENETRATION Mechanical No W-P50-2163-Gl5 P5063G015B STATION AIR TO PENETRATION Mechanical No W-PS0-2163-G 17 P5063G017 STATION AIR TO PENETRATION Mechanical No W-P50-2163-Gl8 P5063G018 STATION AIR TO PENETRATION Mechanical No W-P50-3308-G35 P5008G035 S CONTROL AIR COMPRESR TO DEHYD UNIT Mechanical No W-P50-3579-G25 P5079G025 STATION AIR PIPING ARRANGEMENT DW Mechanical No T23-2837-36G032 T2336G032 DW INSTRUMENTATION PIPING PENE X-33B Mechanical No T23-2837-36G033 T2336G033 DW INSTRUMENTATION PIPING PENE X-33B Mechanical No T23-2837-36G043 T2336G043 DW INSTRUMENTATION PIPING PENE X-30A Mechanical No T23-2837-36G045 T2336G045 DW INSTRUMENTATION PIPING PENE X-30A.

Mechanical No Mechanical T23-2837-36G054 T2336G054 DW INSTRUMENTATION PIPING PENE X-30B No T23-2837-36G056 T2336G056 DW INSTRUMENTATION PIPING PENE X-30B Mechanical No T23-2837-36G058 T2336G058 DW INSTRUMENTATION PIPING PENE X-30B Mechanical No T23-2837-36G075 T2336G075 DW INSTRUMENTATION PIPING PENE X-30B Mechanical No T23-2837-36G081 T2336G081 DW INSTRUMENTATION PIPING PENE X-30B Mechanical No T23-2837-36G096 T2336G096A DW INSTRUMENTATION PIPING PENE X-30B Mechanical No Snubber Program Revision 1 Page 9 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-2665 No DC-2665 No DC-2665 No DC-0645 No DC-2120 No DC-0645 No DC-0645 No DC-0645 No DC-3201 No DC-3201 No DC-3201 No DC-0926 No DC-0926 No DC-1134 No DC-1134 No DC-1134 No DC-1134 No DC-1134 No DC-1134 No DC-1719 No DC-1134 No DC-3512, 3964 No DC-3512 No DC-3504 No DC-3504 No DC-3506, 3511 No 3503,3509 DC-3503, 3509 No DC-3503, 3509 No DC-3509 No DC-3506, 3509 No DC-3511 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division, DSN PIS Number Pipin2 Iso Description subsystem T23-2837-36G096 T2336G096B DW INSTRUMENTATION PIPING PENE X-30B Mechanical No Mechanical T23-2837-40G002 T2340G002A DW INSTRUMENTATION PIPING PENE X-33A No Mechanical T23-2837-40G002 T2340G002B DW INSTRUMENTATION PIPING PENE X-33A No T23-2837-40G004 T2340G004 DW INSTRUMENTATION PIPING PENE X-33A Mechanical No T23-2837-40G008 T2340G008 DW INSTRUMENTATION PIPING PENE X-33A Mechanical No T23-2837-40G009 T2340G009A DW INSTRUMENTATION PIPING PENE X-33A Mechanical No T23-283 7-40G009 T2340G009B DW INSTRUMENTATION PIPING PENE X-33A Mechanical No T23-2837-40G015 T2340G0I5 DW INSTRUMENTATION PIPING PENE X-33A Mechanical No Mechanical T23-2837-41G00I T2341G00I DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-41G002 T2341G002A DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-41G002 T2341G002B DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-41G005 T2341G005A DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-4 I GOOS T2341G005B DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-4 l G007 T2341G007A DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-4 l 0007 T2341G007B DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-41G0I0 T2341G0I0A DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-41G0I0 T2341G0IOB DW INSTRUMENTATION PIPING PENE X-40C/40D No Mechanical T23-2837-41G017 T234IG0I7 DW INSTRUMENTATION PIPING PENE X-40D No Mechanical T23-2837-4IG025 T2341G025 DW INSTRUMENTATION PIPING PENE X-40C No T23-2837-42G00I T2342G001 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No Snubber Program Revision 1 Page 10 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3511 No DC-3522, 3523 No 3524,3525 DC-3522, 3523 No 3524,3525 DC-3522, 3524 No DC-3522, 3524 No DC-3523, 3525 No DC-3523, 3525 No DC-3525 No DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3527 thru No 3538 DC-3528, 3530 No 3532,3534 3536,3538 DC-3527, 3529 No 3531,3533 3535,3537 DC-3539, 3548 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division, DSN PIS Number Pioim! Iso Descriotion subsystem T23-2837-42G003 T2342G003 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No Mechanical T23-2837-42G0l2 T2342G0l2A DW INSTRUMENTATION PIPING PENE X-46B/52 No Mechanical T23-2837-42G0l2 T2342G0l2B DW INSTRUMENTATION PIPING PENE X-46B/52 No Mechanical T23-2837-42G0l4 T2342G0l4A DW INSTRUMENTATION PIPING PENE X-46B/52 No Mechanical T23-2837-42G0l4 T2342G0l4B DW INSTRUMENTATION PIPING PENE X-46B/52 No Mechanical T23-2837-42G0l 7 T2342G0l7 DW INSTRUMENTATION PIPING PENE X-46B/52 No T23-2837-42G020 T2342G020 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No T23-2837-42G02 I T2342G021A DW INSTRUMENTATION PIPING PENE X-52 Mechanical No T23-2837-42G021 T2342G02IB DW INSTRUMENTATION PIPING PENE X-52 Mechanical No T23-2837-42G022 T2342G022 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No Mechanical T23-2837-42G023 T2342G023A DW INSTRUMENTATION PIPING PENE X-46B/52 No Mechanical T23-2837-42G023 T2342G023B DW INSTRUMENTATION PIPING PENE X-46B/52 No T23-2837-42G024 T2342G024 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G026 T2342G026 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G027 T2342G027 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G028 T2342G028 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G030 T2342G030 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G036 T2342G036 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G041 T2342G041 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No T23-2837-42G050 T2342G050 DW INSTRUMENTATION PIPING PENE X-46B Mechanical No T23-2837-42G053 T2342G053 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No Mechanical T23-2837-42G054 T2342G054 DW INSTRUMENTATION PIPING PENE X-52 No T23-2837-42G062 T2342G062 DW INSTRUMENTATION PIPING PENE X-52 Mechanical No Snubber Program Revision 1 Page 11 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3539, 3548 No DC-3539 thru No 3542,DC-3545 thru 3548 DC-3539 thru No 3542,DC-3545 thru 3548 DC-3540, 3541 No 3546,3548 DC-3540, 3541 No 3546, 3548 DC-3539 thru No 3542,DC-3545 thru 3548 DC-3540 No DC-3540, 3545 No DC-3540, 3545 No DC-3540, 3545 No DC-3539, 3542 No 3545,3547 DC-3539, 3542 No 3545,3547 DC-3541 No DC-3541 No DC-3541, 3546 No DC-3541, 3546 No DC-3541, 3546 No DC-3542, 3547 No DC-3543, 3966 No DC-3542, 3547 No DC-3543, 3966 No DC-3539, 3540 No 3545,3548 DC-3543, 3966 No

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division/

DSN PIS Number Pioin2: lso Descriotion subsystem T23-2837-43G045 T2343G045 DW INSTRUMENTATION PIPING PENE X-33B Mechanical No T23-2837-43G049 T2343G049 DW INSTRUMENTATION PIPING PENE X-33B Mechanical No Mechanical T23-2837-45G002 T2345G002A DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G002 T2345G002B DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G003 T2345G003 DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G004 T2345G004 DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G007 T2345G007 DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G01 l T2345G011A DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G011 T2345G011B DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G012 T2345G012A DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G012 T2345G012B DW INSTRUMENTATION PIPING PENE X-28/A/C No Mechanical T23-2837-45G019 T2345G019 DW INSTRUMENTATION PIPING PENE X-28A No T23-2837-46G 100 T2346G100 DW INSTRUMENTATION PIPING PENE X-40A Mechanical No T23-2837-46G 101 T2346G101 DW INSTRUMENTATION PIPING PENE X-40B/53 Mechanical No T23-2837-46Gl02 T2346G102 DW INSTRUMENTATION PIPING PENE X-40B/53 Mechanical No Mechanical T23-2837-46G017 T2346G017A DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G017 T2346G017B DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G017 T2346G017C DW INSTRUMENTATION PIPING PENE X-40A No Snubber Program Revision 1 Page 12 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3550 No DC-3550 No DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3566 DC-3555 thru No 3560 DC-3567 No DC-3574 No DC-3574 No DC-3574, 3576 No 3578,3579 3580,3581 DC-3574, 3576 No 3578,3579 3580,3581 DC-3574, 3576 No 3578,3579 3580,3581

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than ARMS Hanger one division/

DSN PIS Number Piping Iso Description subsystem Mechanical T23-2837-46G017 T2346G017D DW INSTRUMENTATION PIPING PENE X-40A No T23-2837-46G022 T2346G022 DW INSTRUMENTATION PIPING PENE X-40A Mechanical No T23-2837-46G042 T2346G042 DW INSTRUMENTATION PIPING PENE X-40A Mechanical No T23-2837-46G054 T2346G054 DW INSTRUMENTATION PIPING PENE X-46A Mechanical No T23-2837-46G070 T2346G070 DW INSTRUMENTATION PIPING PENE X-46A Mechanical No T23-2837-46G078 T2346G078 DW INSTRUMENTATION PIPING PENE X-46A Mechanical No Mechanical T23-2837-46G093 T2346G093 DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G094 T2346G094A DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G094 T2346G094B DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G094 T2346G094C DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G094 T2346G094D DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G094 T2346G094E DW INSTRUMENTATION PIPING PENE X-40A No Mechanical T23-2837-46G094 T2346G094F DW INSTRUMENTATION PIPING PENE X-40A No T23-2837-48G008 T2348G008A DW INSTRUMENTATION PIPING PENE X-40B Mechanical No T23-2837-48G008 T2348G008B DW INSTRUMENTATION PIPING PENE X-40B Mechanical No T23-2837-48G012 T2348G012 DW INSTRUMENTATION PIPING PENE X-40B Mechanical No T23-2837-51Gl41 T2351Gl41 DW INSTRUMENTATION PIPING PENE X-54A Mechanical No T23-2837-5 l G 142 T2351Gl42 DW INSTRUMENTATION PIPING PENE X-54B Mechanical No T23-2837-5 l G 144 T2351Gl44 DW INSTRUMENTATION PIPING PENE X-54B Mechanical No Snubber Program Revision 1 Page 13 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3574, 3576 No 3578,3579 3580,3581 DC-3568 No DC-3550 No DC-3572, 3585 No DC-3582 No DC-3571 No DC-2663, 3550 No 3567,3568 3569,3570 DC-2663, 3550 No 3567,3568 3569,3570 DC-2663, 3550 No 3567,3568 3569,3570 DC-2663, 3550 No 3567,3568 3569,3570 DC-2663, 3550 No 3567,3568 3569,3570 DC-2663, 3550 No 3567,3568 3569,3570 DC-2663, 3550 No 3567,3568 3569,3570 DC-3588, 3590 No DC-3588, 3590 No DC-3587, 3589 No DC-3599 No DC-3600 No DC-3600 No

ARMS Hanger DSN PIS Number 1'23-2837-51 G019 T2351G019 1'23-2837-51 G028 T2351G028 T23-2837-51 G029 T2351G029 T23-2837-510033 T2351G033 1'23-2837-51 G043 T2351G043 1'23-2837-51 G061 T2351G061 T23-2837-51 G062 T2351G062 1'23-2837-530022 T2353G022 T23-2837-53G031 T2353G031 T23-2837-53G035 T2353G035 T46-3092-G05 T4692G005 T46-3093-G10 T4693G010 T46-3093-G 11 T4693G011 T46-3093-G18 T4693G018A T46-3093-G18 T4693G018B T48-4061-G06 T4861G006 T48-4061-G08 T4861G008 W-T48-4062-G01 T4862G001 W-T48-4062-G05 T4862G005A W-T48-4062-G05 T4862G005B W-T48-5225-G06 T4825G006 W-T48-5225-G09 T4825G009 W-T48-5314-G02 T4814G002 W-T48-5314-G03 T4814G003 W-T48-5314-G04 T4814G004 W-T48-53 l 4-G05 T4814G005 W-T48-5314-G06 T4814G006 W-T48-5314-O07 T4814G007 W-T48-5314-GIO T4814G010 T49-5325-G58 T4925G058 T49-5325-G59 T4925G059 T49-5325-G60 T4925G060 ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than one division, Pipin2: Iso Description subsvstem DW INSTRUMENTATION PIPING PENE X-54A Mechanical No DW INSTRUMENTATION PIPING PENE X-55B Mechanical No DW INSTRUMENTATION PIPING PENE X-55B Mechanical No DW INSTRUMENTATION PIPING PENE X-55B Mechanical No DW INSTRUMENTATION PIPING PENE X-55B Mechanical No DW INSTRUMENTATION PIPING PENE X-54B Mechanical No DW INSTRUMENTATION PIPING PENE X-54B Mechanical No DW INSTRUMENTATION PIPING PENE X-29 Mechanical No DW INSTRUMENTATION PIPING PENE X-29 Mechanical No DW INSTRUMENTATION PIPING PENE X-29 Mechanical No CONTAINMENT PURGE SYSTEM Mechanical Yes CONTAINMENT PURGE SYSTEM Hydraulic Yes CONTAINMENT PURGE SYSTEM Hydraulic Yes CONTAINMENT PURGE SYSTEM Hydraulic Yes CONTAINMENT PURGE SYSTEM Hydraulic Yes NITRO SUP HDR TO SUP POOL PENE X-205C/26 Mechanical No NITRO SUP HDR TO SUP POOL PENE X-205C/26 Mechanical No NITRO SUP HDR TO SUP POOL PENE X205D BYP Mechanical No NITRO SUP HDR TO SUP POOL PENE X205D BYP Mechanical No NITRO SUP HDR TO SUP POOL PENE X205D BYP Mechanical No COMB GAS CONTR SYS COND DRAIN/SIPHON BYP Mechanical No COMB GAS CONTR SYS COND DRAIN/SIPHON BYP Mechanical No NITRO INERT SUP HDR & BLEEDOFFIPENE X3 IB Mechanical No NITRO INERT SUP HDR & BLEEDOFFIPENE X3 IB Mechanical No NITRO INERT SUP HDR & BLEEDOFFIPENE X3 IB Mechanical No NITRO INERT SUP HDR & BLEEDOFFIPENE X3 IB Mechanical No NITRO INERT SUP HDR & BLEEDOFFIPENE X3 IB Mechanical No NITRO INERT SUP HDR& BLEEDOFFIPENE X31B Mechanical No NITRO INERT SUP HDR & BLEEDOFFIPENE X3 IB Mechanical No PRIMARY CONTNMENT PNEUMATIC SUPPLY-DIV 2 Mechanical No PRIMARY CONTNMENT PNEUMATIC SUPPLY-DIV 2 Mechanical No PRIMARY CONTNMENT PNEUMATIC SUPPLY-DIV 2 Mechanical No Snubber Program Revision 1 Page 14 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3599 No DC-3601 No DC-3601 No DC-3601 No DC-2669 No DC-3600 No DC-3600 No DC-3603 No DC-3603 No DC-3603 No DC-3121 No (TAP 10%)

DC-2991 No DC-2991 No DC-2991 No DC-2991 No DC-3120 No (TAP 10%)

DC-3120 No (TAP 10%)

DC-1816 No DC-1816 No DC-1816 No DC-1998 No DC-1998 No DC-2032 No DC-2032 No DC-2032 No DC-2032 No DC-2032 No DC-2032 No DC-2032 No DC-3496 No DC-3496 No DC-3496 No

ARMS Hanger DSN PIS Number TSO-7114-G44 TS014G044 TS0-7114-G4S TSOI4GO4S TS0-7431-G02 TS031G002 TSO-743 l-G03 TS031G003A TS0-743 l-G03 TS031G003B T71-2820-3SG040 T713SG040 T71-2820-3SG046 T713SG046 T71-2837-62G03S T7162G03S T71-2837-62G037 T7162G037 T71-2837-62G039 T7162G039 T71-283 7-62GOS7 T7162GOS7 T71-2837-63G020 T7163G020 T71 -2837-63G022 T7163G022 T71-2837-63G024 T7163G024 T71 -2837-63G025 T7163G025 T71-2837-63G032 T7163G032 T71-2837-63G034 T7163G034 T71-2837-64G047 T7164G047 T71 -2837-64G048 T7164G048 T71-2837-64G049 T7164G049 T71-2837-64G050 T7164G050 ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than one division/

Pioinl! lso Descriotion subsystem INSTR PIPING PRIMARY CONT MONITORING Mechanical No INSTR PIPING PRIMARY CONT MONITORING Mechanical No EFCV PEN X-27 TO HI FLOW SAMP PUMP & RACK Mechanical No EFCV PEN X-27 TO HI FLOW SAMP PUMP & RACK Mechanical No EFCV PEN X-27 TO HI FLOW SAMP PUMP & RACK Mechanical No INSTR TUBING PAS SYS Mechanical No INSTR TUBING PAS SYS Mechanical No INSTR TUBING FROM PENE X-S3B/S4B TO RACK Mechanical No INSTR TUBING FROM PENE X-S3BIS4B TO RACK Mechanical No INSTR TUBING FROM PENE XSSB TO H21-POOS Mechanical No INSTR TUBE FRM PENE X-S4Ad TO RACKS Mechanical No INSTR TUBING FRM PENE X-29A TO P3300B008 Mechanical No INSTR TUB PENE X-47e TO RACK H21-PS95A Mechanical No INSTR TUBE FRM PENE X47A/B/D TO H21-P004 Mechanical No INSTR TUBE FRM PENE X47A/B/D TO H21-P004 Mechanical No INSTR TUBE FRM PENE X47A/B/D TO H21-P004 Mechanical No INSTR TUBE FRM PENE X47A/B/D TO H21-P004 Mechanical No INSTR TUBING PENE X29B b/c/d/e TO RACKS Mechanical No INSTR TUBING PENE X29B b/c/d/e TO RACKS Mechanical No INSTR TUBING PENE X29B b/c/d/e TO RACKS Mechanical No INSTR TUBING PENE X29B b/c/d/e TO RACKS Mechanical No Snubber Program Revision 1 Page 15 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3613 No DC-3614 No DC-3201 No DC-3201 No DC-3201 No DC-3689 No DC-3201 No DC-3662 No DC-3664 No DC-366S No DC-3809 No DC-3630 No DC-3682 No DC-3678 No DC-3679 No DC-3681 No DC-3681 No DC-3634 No DC-3633 No DC-3632 No DC-3631 No

ARMS Hanger DSN PIS Number T71-2837-64G05l T7164G051 T71-283 7-64G052 T7164G052 Nomenclature:

Notes:

ATTACHMENT 2 LCO 3.0.8 APPLICABLE SAFETY RELATED SNUBBERS Snubber Type More than one division, Pioin!!: Iso Descriotion subsystem INSTR TUBING PENE X29B b/c/d/e TO RACKS Mechanical No INSTR TUBING PENE X29B b/c/d/e TO RACKS Mechanical No AP RFP SRV TAP TAP 10%

TSV WH Annulus Pressurization Reactor Feed Pump Trip - see note 4 Safety Relief Valve Discharge Torus Attached Piping (Mark I Loads)

TAP Loads are not Significant [PUAAG, Section 6.2(c)] - see note 2 Turbine Stop Valve Closure Waterhammer Snubber Program Revision 1 Page 16 of 16 Pipe Stress Dynamic Loads Calculation Mode 1,2,3 DC-3633 No DC-3632 No

1. Dynamic loads are those applied to the piping system in the design stress analysis report( s ). Small dynamic loads ( e.g. small relief valve discharge) neglected in the stress analysis are not considered applied to the snubbers.

2.

Snubbers attached to torus-attached piping are considered to sustain Mark I loads only up to the point where the 10% criteria is met as defined in the stress report.

3. RHR snubbers on piping common to both divisions are considered to support Division 1 & 2 up to the first three-way support(s) on each division piping.

System impact as follows: Snubbers designated as Yes* are multi-divisional for LPCI. Snubbers designated as Yes** are multi-divisional for SDC.

4. For HPCI/RCIC/RWCU pump discharge piping snubbers, RFP trip loads are not considered. These piping systems can be decoupled from the feedwater piping analysis and the dynamic movements at the interface are small. In addition, it is also highly likely that HPCI/RCIC would be isolated when the RFP trips.

NRC-23-0029, Snubber Program for the Fourth 10-Year Testing Interval

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NRC-23-0029, Snubber Program for the Fourth 10-Year Testing Interval

Text

Subject:

Enclosure:

3.0 REFERENCES

3.0 REFERENCES

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