ML22084A076
| ML22084A076 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 04/04/2022 |
| From: | Vincent Gaddy NRC/RGN-IV/DORS |
| To: | Gerry Powell South Texas |
| References | |
| IR 2022012 | |
| Download: ML22084A076 (8) | |
See also: IR 05000498/2022012
Text
April 4, 2022
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 (TEAM) (05000498/2022012 AND
05000499/2022012) AND REQUEST FOR INFORMATION
Dear Mr. Powell:
The purpose of this letter is to notify you that U.S. Nuclear Regulatory Commission (NRC) staff
will conduct a triennial baseline design bases assurance inspection at your South Texas Project
beginning on June 27,2022. The inspection will be conducted in accordance with NRC
Inspection Procedure (IP) 71111.21M, Design Bases Assurance Inspection (Team), dated
December 8, 2016, by a team lead, four engineering-focused inspectors, and one operations-
focused inspector.
The inspection will consist of an information gathering visit by the team lead, in-office
preparation, and two weeks of onsite inspection. The current inspection schedule is as follows:
Onsite Information Gathering Visit: June 27 - 29, 2022
In-office Preparation Weeks: July 11 - 15 and July 25 - 29, 2022
Onsite Inspection Weeks: July 18 - 22, 2022 and August 1 - 5, 2022
The purpose of the information gathering visit is to identify potential risk significant samples and
operator actions. Additionally, the team lead will request a tour of the plant and interviews with
operations and probabilistic safety assessment staff. During the onsite weeks, several days and
administration will be needed on the plant-referenced simulator to facilitate performance of
operator action-based scenarios and job performance measures. Additional information needed
to support the inspection will be identified during the in-office preparation and onsite inspection
weeks, including interviews with engineering managers, engineers, operations, and probabilistic
safety assessment staff.
The objectives of this inspection are to gain reasonable assurance that: 1) risk significant
structures, systems, and components can adequately perform their design basis function,
2) modifications affecting the design and licensing bases have been adequately implemented,
and 3) risk significant issues resulting from generic communications (i.e., operating experience)
have been adequately addressed. Completion of this inspection procedure consists of a
minimum sample size of eight component and modification samples and one operating
experience sample.
G. Powell
2
To minimize the impact the inspection has on the site and to ensure an efficient inspection, we
have enclosed a request for information needed for the inspection. It is important that these
requests are fulfilled as completely and accurately as possible to minimize any additional
requests during the preparation or onsite inspection weeks. The requests have been divided
into three groups.
The first group lists information necessary for our initial inspection scoping activities and
sample selections. This information should be available to the team lead no later than
June 20, 2022. The team lead will review the information prior to and during the
information gathering visit and communicate the initial list of component, modification,
and operating experience samples as soon as practicable.
The second group of information requested includes those items needed to support our
in-office preparation activities. This set of documents should be available no later than
July 11, 2022. This information should be separated for each sample, especially if
provided electronically. Note that the team may identify additional information needed to
support the inspection during this week and will communicate those requests as soon as
practicable.
The third group of information requested includes the additional documentation identified
during in-office preparation activities as well as other resource requests necessary to
support our onsite inspection activities. The additional information or resources should
be available throughout the week of onsite inspection activities beginning on July 18,
2022.
All information requested are to be for the time from the onsite inspection period back to the last
triennial design bases assurance inspection (team) unless stated otherwise. If nothing
addressing a request was done in that time, then the request applies to the last applicable
document. If a request does not apply for any sample, no response is necessary. Include all
attachments to the requests, especially corrective action program documents.
We have discussed the schedule for this inspection with your staff and understand that our
regulatory contact for this inspection will be Stephanie Rogers of your Licensing Organization.
If there are any questions about this inspection or the documents requested, please contact the
lead inspector, Wayne Sifre, 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.
G. Powell
3
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.
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 Operating Reactor Safety
Docket No(s): 50-498; 50-499
Enclosure:
Request for information
Signed by Gaddy, Vincent
on 04/04/22
X SUNSI Review
By: WCS
ADAMS:
X Yes No
Sensitive
X Non-Sensitive
Non-Publicly Available
X Publicly Available
Keyword
OFFICE
DORS/EB1
DORS/EB1
NAME
WCSifre
VGGaddy
SIGNATURE
/RA/
/RA/
DATE
3/28/2022
4/4/2022
Enclosure
Request for Information
Design Bases Assurance Inspection (Team)
South Texas Project
Inspection Report: 05000498/2022012, 05000499/2022012
Information Gathering Dates:
June 27 - 28, 2022
Onsite Inspection Dates:
July 18 - 22, and August 1 - 5, 2022
Inspection Procedure:
IP 71111.21M, Design Bases Assurance Inspection
(Team)
Lead Inspector:
Wayne Sifre, Senior Reactor Inspector
I.
Information Requested by June 20, 2022:
1.
A sortable list of equipment basic events (with definitions), including importance
measures sorted by risk achievement worth (RAW) and Fussell-Vesely (FV) from your
internal events probabilistic risk assessment (PRA). Include basic events with RAW
value of 1.3 or greater.
2.
A sortable list of the top 50 cut-sets from the stations PRA.
3.
A copy of any PRA system notebooks and the latest PRA summary document.
4.
A sortable list of PRA human action basic events or risk ranking of operator actions from
your site-specific PRA sorted by RAW and FV. Provide copies of your human reliability
worksheets for these items.
5.
If you have an external events or fire PRA model, provide the information requested in
items 1-4 for external events and fire.
6.
A copy of the Individual Plant Examination of External Events (IPEEE).
7.
A sortable list of high large early release frequency (LERF) impact events and
associated components.
8.
A sortable list of structures, systems, and components in the Maintenance Rule (a)(1)
category.
9.
A sortable list of high-risk maintenance rule systems/components and functions based
on engineering or expert panel judgment.
10. A list of the stations top 10 issues if available.
11. A list of structures, systems, and components associated with calculations having low
design margins if available.
2
12. A list of any common-cause failures of components.
13. A list of root cause evaluations associated with component failures or design issues
initiated/completed in the last 5 years.
14. A copy of any time-critical and time-sensitive program procedures and a list of all time-
critical and/or time-sensitive operator actions in procedures if not included.
15. A copy of any procedures used to accomplish operator actions associated with the basic
events credited in your PRA.
16. A sortable list of current operator work arounds/burdens and any program procedures
related to operator work arounds/burdens.
17. A list with brief descriptions of permanent and temporary modifications implemented in
the past 5 years to structures, systems, and components. Implemented means
accepted or placed into service and declared functional or operable, as applicable.
Modifications include, for example, permanent or temporary plant changes, design
changes, set point changes, procedure changes, equivalency evaluations, suitability
analyses, calculations, and commercial grade dedications.
18. A sortable list with brief descriptions of operating experience evaluations opened and/or
closed. Include whether it was applicable and if the evaluation and any associated
actions, such as modifications, procedure updates, etc., are complete.
19. A copy of any internal/external self-assessments or audits and associated corrective
action documents generated in preparation for this inspection or related to engineering
or operations.
20. A copy of the technical specifications, surveillance frequency control program, inservice
testing program, preventive maintenance program, technical requirements manual, and
the final safety analysis report (as updated). Include bases documents as applicable.
21. A copy of condition reports associated with inspection findings from the previous NRC
design bases inspection.
22. A list of licensee contacts for the inspection team with phone numbers.
23. A copy of the current management and engineering organizational charts.
II. Information Requested by July 4, 2022:
1.
Components
a.
A copy of the design bases document, system description, etc.
b.
A copy of any vendor manuals (e.g., installation, operation, maintenance, etc.)
c.
A copy of any relevant, active calculations and drawings. If the number of
calculations and/or drawings is extensive, provide a list instead.
3
d.
A list of the preventive maintenance schedule, including any inservice, surveillance,
etc. testing, and a copy of the most recent performance of each.
e.
A copy of the system health notebook
f.
A copy of any corrective action documents covering the past 3 years
g.
A copy of any relevant normal, abnormal, or emergency procedures
2.
Modifications
a.
A copy of the complete change package
b.
A copy of the implementing work order, job, etc.
c.
A copy of post-modification testing work orders, jobs, etc.
d.
A copy of any associated corrective action documents
e.
A copy of any vendor manuals (e.g., operation and maintenance)
f.
A copy of any updated procedures, licensing basis documents, calculations,
drawings, etc.
3.
Operating Experiences
a.
A copy of the complete operating experience evaluation
b.
A copy of any associated corrective action documents
c.
A copy of any associated change packages
d.
A copy of any updated procedures, licensing basis documents, calculations,
drawings, etc.
III. Additional Requests During Onsite Inspection Activities:
1.
A copy of any corrective action documents generated because of the team's requests or
questions during this inspection.
2.
A copy of a list of questions submitted by the team and the status/resolution of the
information requested (provide daily during the inspection to each team member).
4
Inspector Contact Information:
Senior Reactor Inspector
817-200-1193
Wayne.Sifre@nrc.gov
Reactor Inspector
817-200-1563
Wes.Cullum@nrc.gov
Reactor Inspector
817-200-1126
Fabian.Thomas@nrc.gov
Reactor Inspector
817-200-1102
Samuel.Graves@nrc.gov
Senior Risk Analyst
817-200-1573
Rick.Deese@nrc.gov
Mailing Address:
U.S. NRC, Region IV
Attn: Wayne Sifre
1600 East Lamar Blvd.
Arlington, TX 76011-4511