ML21286A573
| ML21286A573 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 10/18/2021 |
| From: | Vincent Gaddy Region 4 Engineering Branch 1 |
| To: | Gerry Powell South Texas |
| References | |
| IR 2022011 | |
| Download: ML21286A573 (9) | |
See also: IR 05000498/2022011
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION IV
1600 E. LAMAR BLVD.
ARLINGTON, TX 76011-4511
October 18, 2021
G T Powell, President and CEO
STP Nuclear Operating Company
P.O. Box 289
Wadsworth, TX 77483
SUBJECT:
SOUTH TEXAS PROJECT - NOTIFICATION OF NRC DESIGN BASES
ASSURANCE INSPECTION (PROGRAMS) (05000498/2022011 AND
05000499/2022011) AND REQUEST FOR INFORMATION
Dear Mr. Powell:
On November 29, 2021 the U.S. Nuclear Regulatory Commission (NRC) will begin an onsite
inspection at the South Texas Project. A three-person team will perform this inspection using
NRC Inspection Procedure 71111, Attachment 21N.02, Design-Basis Capability of
Power-Operated Valves Under 10 CFR 50.55a Requirements, dated October 9, 2020.
This inspection will evaluate the reliability, functional capability, and design basis of
risk-significant power-operated valves as required by 10 CFR 50.55a and applicable
10 CFR Part 50, Appendix A and Appendix B, requirements, and as required by the South
Texas Project operating license. Additionally, the team will perform an inspection of the
documentation files to verify that the plant activities associated with safety-related
motor-operated valves meet your commitments to Generic Letter (GL) 89-10, Safety-Related
Motor-Operated Valve Testing and Surveillance, and GL 96-05, "Periodic Verification of
Design-Basis Capability of Safety-Related Motor-Operated Valves." In conducting this
inspection, the team will select power-operated valves used to prevent and mitigate the
consequences of a design basis accident.
The inspection will include an information gathering site visit by the team leader and two weeks
of onsite inspection by the team. The inspection team will consist of three NRC inspectors. The
current inspection schedule is as follows:
Onsite Information Gathering Visit: November 29 - December 2,2021
Preparation Week: January 18 - 21, 2022
Onsite Weeks: January 24 - 27, 2022 and February 7 - 10, 2022
The purpose of the information gathering visit is to meet with members of your staff to become
familiar with the power-operated valve activities at South Texas Project. The lead inspector will
request a meeting with your personnel to discuss the site power-operated valve procedures.
Additionally, the lead inspector will request a discussion with your staff to become familiar with
the regulations and standards applicable to power-operated valves at the site. Additional
information and documentation needed to support the inspection will be identified during the
inspection, including interviews with engineering managers and engineers.
G T Powell
2
To minimize the inspection impact on the site and to ensure a productive inspection, we have
enclosed a request for information needed prior to the inspection. This information should be
made available to the lead inspector during the November 29, 2021, visit. Since the inspection
will be concentrated on safety-related and risk-significant power-operated valves, a list of such
power-operated valves should be available to review during and following the information
gathering visit to assist in our selection of appropriate power-operated valves to review.
Additional requests by inspectors will be made during the onsite weeks for specific documents
needed to complete the review of specific power-operated valves and associated activities. It is
important that all documentation is up-to-date and complete in order to minimize the number of
additional documents requested during the preparation and/or the onsite portions of the
inspection. In order to facilitate the inspection, we request that a contact individual be assigned
to each inspector to ensure information requests, questions, and concerns are addressed in a
timely manner.
The lead inspector for this inspection is Mr. Wayne Sifre. We understand that our licensing
contact for this inspection is Mr. A.J. Albaaj. If there are any questions about the inspection or
the requested materials, please contact the lead inspector by telephone at 817-200-1193 or by
e-mail at Wayne.Sifre@nrc.gov.
PAPERWORK REDUCTION ACT STATEMENT
This letter contains mandatory information collections that are subject to the Paperwork
Reduction Act of 1995 (44 U.S.C. 3501 et seq.). The Office of Management and Budget (OMB)
approved these information collections (approval number 3150-0011). Send comments
regarding this information collection to the Information Services Branch, Office of the Chief
Information Officer, Mail Stop: T6 A10M, U.S. Nuclear Regulatory Commission, Washington, DC
20555-0001, or by e-mail to Infocollects.Resource@nrc.gov, and to the Desk Officer, Office of
Information and Regulatory Affairs, NEOB-10202, (3150-0011) Office of Management and
Budget, Washington, DC 20503.
PUBLIC PROTECTION NOTIFICATION
The NRC may not conduct nor sponsor, and a person is not required to respond to, a request
for information or an information collection requirement unless the requesting document
displays a currently valid OMB control number.
G T Powell
3
This letter, its enclosure, and your response (if any) will be made available for public inspection
and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document
Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public
Inspections, Exemptions, Requests for Withholding.
Sincerely,
Vincent G. Gaddy, Chief
Engineering Branch 1
Division of Reactor Safety
Docket(s): 50-498; 50-499
Enclosures:
Request for Information and
Valves of Interest
cc w/ encl: Distribution via LISTSERV
Vincent G. Gaddy
Digitally signed by Vincent G.
Gaddy
Date: 2021.10.18 10:42:57 -05'00'
SUNSI Review
ADAMS:
Non-Publicly Available Non-Sensitive Keyword:
By: WCS
Yes No Publicly Available
Sensitive NRC-002
OFFICE
DRS/EB1
DRS/EB1
NAME
WSifre
VGaddy
SIGNATURE
VGG
DATE
10/13/2021
10/18/2021
1
Enclosure
Request for Information
Design-Basis Capability of Power-Operated Valves
South Texas Project
Inspection Report: 05000498/2022011 and 05000499/2022011
EPID Number:
I-2022-011-0007
Information Gathering Dates:
November 29 - December 2, 2021
Onsite Inspection Dates:
January 24 - 28 and February 7 - 11, 2022
Inspection Procedure:
IP 71111, Attachment 21N.02, Design-Basis Capability of
Power-Operated Valves Under 10 CFR 50.55a
Requirements
Lead Inspector:
Wayne C. Sifre, Senior Reactor Inspector
I.
Information Requested for Information Gathering Visit (November 29, 2021)
The following information should be provided to the lead inspector in hard copy or
electronic format, to the attention of the lead inspector by November 22, 2021, to
facilitate the reduction in the items to be selected for a final list of components. The
inspection team will finalize the selected list during the prep week using the documents
requested in this enclosure. The specific items selected from the lists shall be available
and ready for review on the day indicated in this request. *Please provide requested
documentation electronically in pdf files, Excel, or other searchable formats, if possible.
The information should contain descriptive names and be indexed and hyperlinked to
facilitate ease of use. Information in "lists" should contain enough information to be
easily understood by someone who has knowledge of pressurized water reactor
technology. If requested documents are large and only hard copy formats are available,
please inform the inspectors, and provide subject documentation during the first day of
the onsite inspection.
1. Provide the valve characteristics for the valves listed in the attached list as described
in Appendix C of NRC Inspection Procedure 71111, Attachment 21N.02, Design
Basis Capability of Power-Operated Valves Under 10 CFR 50.55a Requirements.
2. List of power-operated valves (POVs) important to safety for the South Texas
Project. The list should include (a) component identification number; (b) applicable
plant system; (c) ASME Boiler and Pressure Vessel Code (BPV Code) Class; (d)
safety-related or nonsafety-related classification; (e) valve type, size and
manufacturer; and (f) actuator type, size, and manufacturer. If the NRC has granted
a license amendment to categorize structures, systems, and component in
accordance with 10 CFR 50.69, please provide the risk-informed safety category of
the structure, system, or component.
3. List of POVs sorted by risk importance, including internal and external risk
considerations.
2
4.
5. Word-searchable updated final safety analysis report (UFSAR), license conditions,
technical specifications, and most recent inservice testing (IST) program plan (and
bases document), including any standards that have been committed to with respect
to POV capability and testing. Also, identify which UFSAR sections address
environmental, seismic, and functional qualification of POVs.
6. Provide copies of the latest POV program level procedures or manuals.
7. NRC Safety Evaluation Report(s) associated with the IST program including relief
and alternative requests submitted in accordance with 10 CFR 50.55a for POVs.
8. Provide any responses to NRC Generic Letter (GL) 89-10, Safety-Related Motor-
Operated Valve Testing and Surveillance, (and its supplements) and GL 96-05,
Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated
Valves.
9. Provide the most recently completed audit, self-assessment, or benchmark of POV
programs at South Texas Project.
10. List of systems, system numbers/designators, and corresponding names.
11. List of site contacts that will be associated with the inspection.
II.
Discussions Requested During the Information Gathering Visit
1. Interview with a representative to discuss site POV capability analyses, including
plant drawings and assumptions. This includes analysis for accident conditions.
2. Interview with a representative to discuss POV maintenance elements as integrated
into plant programs and procedures.
3. Interview with a representative to discuss maintaining the design-basis capability of
POVs if they have entered a period of extended operation, if applicable.
III.
Information Requested for Inspection Preparation (January 17, 2022) *
1. Calculations and/or evaluations associated with the selected POVs, as applicable.
For example, these may include those related to motor-operated valve (MOV) torque
switch setpoint, MOV terminal (degraded) voltage, maximum expected differential
and pressure, torque switch bypass settings, rate of loading, environmental and
process conditions during normal/accident operation, seismic and weak-link analysis,
and pressure locking and thermal binding, etc. (Ten specific valves will be identified
and communicated to you prior to January 17, 2022.)
2. Environmental qualification files associated with the selected POVs, as applicable.
3. Vendor manuals and technical sheets associated with the selected POVs.
3
4. Provide results (i.e., completed work orders) from the last three performances of
diagnostic (static and/or dynamic) testing and inservice testing (stroke time, leak
rate, etc.) of the selected POVs.
5. Provide performance (or failure) trending data for the selected POVs.
6. List of modifications related to the selected POVs.
7. List of corrective action program documents, with a brief description, related to the
selected POVs over the past five years.
8. List of preventive maintenance activities for the selected POVs (valve and actuator).
Include the identification number, title and/or description, and frequency.
9. System training manuals and/or design basis documents associated with the
selected POVs.
10. Piping and instrument diagrams for systems related to the selected POVs.
11. Tours of the rooms in which the selected POVs are installed. If the inspection will be
performed remotely, multiple pictures of selected valve and valve location can be
provided. The pictures must have an orientation reference, a size reference, pictures
of the surrounding environment, and pictures of the nameplates of both valve and
valve operator.
IV.
Discussions Requested During the First Inspection Week (January 24,2022)
1. Brief presentation of POV programs at South Texas Project.
2. Interviews with representatives to discuss the design-basis capability of POVs based
upon the teams review of gathered information.
- Please sort the Section III responses by each selected POV.
Inspector Contact Information:
Senior Reactor Inspector
817-200-1193
Wayne.Sifre@nrc.gov
Reactor Inspector
817-200-1469
Jonathan.Braisted@nrc.gov
Reactor Inspector
817-200-1534
Dustin.Reinert@nrc.gov
Mailing Address:
U.S. NRC, Region IV
Attn: Wayne C. Sifre
1600 East Lamar Blvd.
Arlington, TX 76011-4511
1
Enclosure
Valves of Interest
Design-Basis Capability of Power-Operated Valves
South Texas Project
No.
ACT
Valve Size
Valve Type
System Name
Utility ID
1.
3
Gate
PRESSURIZER PORV PCV-
0655A ISOLATION VALVE
1R141XRC0001A
2.
12
Gate
RHR PUMP 1C SUCTION
1R161XRH0061C
3.
4
Gate
CVCS LETDOWN ISOLATION
1R171XCV0465
4.
6
Gate
HI HEAD SAFETY INJECTION
PUMP 1A DISCHARGE
2N121XSI0004A
5.
16
Gate
CONTAINMENT
EMERGENCY SUMP 1A TO
SI TRAIN A PUMPS SUCTION
ORC ISOLATION
2N121XSI0016A
6.
12
Gate
SAFETY INJECTION
ACCUMULATOR 1C OUTLET
2N121XSI0039C
7.
4
Gate
CVCS CHARGING ORC
CONTAINMENT ISOLATION
2R171XCV0025
8.
4
Stop Check
ORC AFW ISOLATION
2S141TAF0085
9.
4
Globe
BLOWDOWN ORC
ISOLATION VALVE
3S141XMS0514
10.
18
Butterfly
REACTOR CONTAINMENT
BUILDING
SUPPLEMENTARY PURGE
SUPPLY ISOLATION
A1HCFV9776
11.
30
Gate
MAIN STEAM ORC
ISOLATION VALVE
A1MSFSV7414
12.
HOV
8
Globe
MAIN STEAM OUTLET
POWER OPERATED
RELIEF VALVE
A1MSPV7411
13.
1
Globe
REACTOR VESSEL HEAD
VENT ISOLATION VALVE
A1RCHV3658A
14.
4
Gate
BLOWDOWN ORC
ISOLATION VALVE
B1SBFV4152
15.
4
Globe
CVCS LETDOWN ORIFICE
HEADER ISOLATION
VALVE
C1CVFV0011
16.
6
Gate
HI HEAD SAFETY INJECTION
PUMP 2A DISCHARGE
TO LOOP 2A HOT LEG
ISOLATION
2N122XSI0008A
2
Enclosure
No.
ACT
Valve Size
Valve Type
System Name
Utility ID
17.
8
Gate
LO HEAD SAFETY
INJECTION PUMP 2B
DISCHARGE
2N122XSI0018B
18.
8
Gate
LO HEAD SAFETY
INJECTION TRAIN B TO
LOOP 2B HOT LEG
ISOLATION
2R162XRH0019B
19.
8
Gate
LO HEAD SAFETY
INJECTION TRAIN C TO
LOOP 2C COLD LEG
ISOLATION
2R162XRH0031C
20.
4
Gate
CVCS NORMAL CHARGING
2R172XCV0003
21.
6
Gate
CVCS VOLUME CONTROL
TANK OUTLET
2R172XCV0113A
22.
4
Stop Check
LINE ISOLATION
2S142TAF0019
23.
30
Butterfly
ECW PUMP 2C DISCHARGE
3R282TEW0151
24.
4
Globe
AF-MOV-7526 (AFW TRAIN D
DISCHARGE MOV)
3S142ZAF7526
25.
4
Globe
A AFW CROSSOVER VALVE
A2AFFV7517
26.
30
Gate
MAIN STEAM ORC
ISOLATION VALVE
A2MSFSV7414
27.
6
Globe
PRESSURIZER POWER
OPERATED RELIEF VALVE
A2RCPCV0655A
28.
4
Gate
BLOWDOWN ORC
ISOLATION VALVE
A2SBFV4150
29.
4
Globe
B AFW CROSSOVER VALVE
B2AFFV7516
30.
16
Butterfly
RHR HEAT EXCHANGER 2C
CCW RETURN FLOW
CONTROL VALVE
OPERATOR
C2CCFV4565