ML15342A469
| ML15342A469 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 12/08/2015 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Koehl D South Texas |
| G. George | |
| References | |
| IR 2016007 | |
| Download: ML15342A469 (9) | |
See also: IR 05000498/2016007
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION IV
1600 E. LAMAR BLVD.
ARLINGTON, TX 76011-4511
December 8, 2015
Mr. Dennis L. Koehl
President and CEO/CNO
STP Nuclear Operating Company
P.O. Box 289
Wadsworth, TX 77483
SUBJECT:
SOUTH TEXAS PROJECT - NOTIFICATION OF NRC DESIGN BASES
INSPECTION (05000498/2016007 and 05000499/2016007) AND INITIAL
REQUEST FOR INFORMATION
Dear Mr. Koehl:
On January 13, 2016, the NRC will begin a triennial baseline Design Bases Inspection at the
South Texas Project, Units 1 and 2. A seven person team will perform this inspection using the
NRC Inspection Procedure 71111, Attachment 21M Design Bases Inspection (TEAM).
The inspection focuses on components and operator actions that have high risk and low design
margins. The samples reviewed during this inspection will be identified during an information
gathering visit and during the subsequent in-office preparation week. In addition, a number of
operating experience issues will also be selected for review.
The inspection will include an information gathering site visit by the team leader and a senior
reactor analyst, and two weeks of onsite inspection by the team. The inspection will consist of
five NRC inspectors and two contractors, of which six will focus on engineering and one on
operations. The current inspection schedule is as follows:
Onsite Information Gathering Visit: January 13, 2016
Preparation Week: January 19-22, 2016
Onsite Weeks: January 25-28, 2016, and February 8-11, 2016
The purpose of the information gathering visit is to meet with members of your staff to identify
potential risk-significant components and operator actions. The lead inspector will also request
a tour of the plant with members of your operations staff and probabilistic safety assessment
staff. During the onsite weeks, several days will be needed on the plant-referenced simulator in
order to facilitate the development of operator action based scenarios. Additional information
and documentation needed to support the inspection will be identified during interviews with
engineering managers, engineers, and probabilistic safety assessment staff throughout the
inspection
D. Koehl
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Our experience with these inspections has shown that they are extremely resource intensive,
both for the NRC inspectors and the licensee staff. In order to minimize the inspection impact
on the site and to ensure a productive inspection, we have enclosed a request for information
needed for the inspection. The request has been divided into three groups. The first group lists
information necessary for the information gathering visit and for general preparation. This
information should be available to the regional office no later than January 11, 2016. Insofar as
possible, this information should be provided electronically to the lead inspector. Since the
inspection will be concentrated on high risk/low margin components, calculations associated
with your list of high risk components should be available to review during the information
gathering visit to assist in our selection of components based on available design margin.
The second group of documents requested is those items that the team will need access to
during the preparation week in order to finalize the samples to be inspected. The third group
lists information necessary to aid the inspection team in tracking issues identified as a result of
the inspection. It is requested that this information be provided to the lead inspector as the
information is generated during the inspection. Additional requests by inspectors will be made
throughout all three onsite weeks for specific documents needed to complete the review of that
component/selection. It is important that all of these documents are 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 Gerond A. George. We understand that our licensing
engineer contact for this inspection is Rafael Gonzalez. If there are any questions about the
inspection or the requested materials, please contact the lead inspector by telephone at
817-200-1562 or by e-mail at Gerond.George@nrc.gov.
This letter does not contain new or amended information collection requirements subject to
the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information
collection requirements were approved by the Office of Management and Budget, control
number 3150-0011. The NRC may not conduct or 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 Office of Management and Budget control
number.
D. Koehl
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In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be
made available electronically for public inspection in the NRC Public Document Room or from
the Publicly Available Records (PARS) component of NRCs document system (ADAMS).
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA/
Thomas R. Farnholtz, Chief
Engineering Branch 1
Division of Reactor Safety
Dockets: 50-498; 50-499
Enclosure: Design Bases Inspection Request for Information
Electronic Distribution for South Texas Project
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Enclosure
Initial Request for Information
Design Bases Inspection
South Texas Project, Units 1 and 2
Inspection Report: 05000498/2016007, 05000499/2016007
Information Gathering Dates:
January 13, 2016
Inspection Dates:
January 25-28, 2016, and February 8-11, 2016
Inspection Procedure:
IP 71111, Attachment 21M, Design Bases Inspection
(TEAM)
Lead Inspector:
Gerond A. George, Senior Reactor Inspector
I.
Information Requested Prior to Information Gathering Visit (January 11, 2016)
The following information (Section I of this enclosure) should be sent to the Region IV
office in hard copy or electronic format (Certrec IMS preferred), to the attention of
Gerond A. George by January 11, 2016, to facilitate the reduction in the items to be
selected for a final list during the preparation week of January 19, 2016. The inspection
team will finalize the selected list during the prep week using the additional documents
requested in Section II of 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 inspector(s), and provide subject documentation during
the first day of the onsite inspection.
1. An Excel spreadsheet 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. Provide a list of the top 500 cut-sets from your PRA.
3. Copies of PRA system notebooks, and the latest PRA summary document.
4. An excel spreadsheet of PRA human action basic events or risk ranking of operator
actions from your site specific PSA sorted by RAW and FV. Provide copies of your
human reliability worksheets for these items.
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5. If you have an external events or fire PSA model, provide the information requested
in items 1-4 for external events and fire.
6. Any pre-existing evaluation or list of components and associated calculations with
low design margins, (i.e., pumps closest to the design limit for flow or pressure,
diesel generator close to design required output, heat exchangers close to rated
design heat removal, etc.).
7. List of high risk maintenance rule systems/components and functions; based on
engineering or expert panel judgment. Include a list of structures, systems, and
components in the Maintenance Rule (a)(1) category.
8. Site top 10 issues list.
9. List of any common-cause failures of components in the last 3 years.
10. A list of operating experience evaluations for the last 2 years.
11. A list of all time-critical operator actions in procedures.
12. List of current operator workarounds/burdens and plans for resolution.
13. List of root cause evaluations associated with component failures or design issues
initiated/completed in the last 5 years.
14. List of motor-operated valves (MOVs) in the program, design margin and risk
ranking.
15. List of air-operated valves (AOVs) in the valve program, design and risk ranking.
16. Current management and engineering organizational charts.
17. South Texas Project, Units 1 and 2, IPEEEs, if available electronically.
18. Mechanical piping drawings for:
Engineered safety features
Emergency core cooling systems
19. Electrical one-line drawings for:
Offsite power/switchyard supplies
Normal AC power systems
Emergency AC/DC power systems (including 120VAC power and
125VDC/24VDC safety class systems)
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20. An electronic copy of the Design Bases Documents or System Design Criteria
documents.
21. An electronic copy of the System Health Notebooks.
22. Electronic copies of the Technical Specifications and the Updated Final Safety
Analysis Report.
II.
Information Requested to be Available on First Day of Preparation Week
(January 19, 2016)
1. List of condition reports (corrective action documents) associated with each of the
selected components for the last 5 years.
2. The corrective maintenance history associated with each of the selected components
for the last 2 years.
3. A list of permanent and temporary modifications associated with each of the selected
components for the last 3 years.
4. Copies of calculations associated with each of the selected components (if not
previously provided), excluding data files. Please review the calculations and also
provide copies of reference material (such as drawings, engineering requests, and
vendor letters).
5. Copies of operability evaluations associated with each of the selected components
and plans for restoring operability, if applicable.
6. Trend data on the selected electrical/mechanical components performance for last
3 years (for example, pumps performance including in-service testing, other
vibration monitoring, oil sample results, etc., as applicable).
7. A copy of any internal/external self-assessments and associated corrective action
documents generated in preparation for the inspection.
8. A copy of engineering/operations related audits completed in the last 2 years.
9. Procedures used to accomplish operator actions associated with the basic events in
your PRA.
10. List of licensee contacts for the inspection team with pager or phone numbers.
III.
Information Requested to be provided throughout the inspection.
1. Copies of any corrective action documents generated as a result of the teams
questions or queries during this inspection.
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2. Copies of the list of questions submitted by the team members and the
status/resolution of the information requested (provide daily during the inspection to
each team member).
3. Reference materials (available electronically and as needed during all onsite weeks):
General set of plant drawings
IPE/PRA report
Procurement documents for components selected
Plant procedures (normal, abnormal, emergency, surveillance, etc.)
Technical Specifications
Updated Final Safety Analysis Report
Vendor manuals
Inspector Contact Information:
Gerond A. George
Senior Reactor Inspector
817-200-1562
Gerond.George@nrc.gov
Mailing Address:
U.S. NRC, Region IV
Attn: Gerond George
1600 East Lamar Blvd.
Arlington, TX 76011-4511
SUNSI Review
By: GAG
ADAMS:
Yes No
Sensitive
Non-Sensitive
Non-Publicly Available
Publicly Available
Keyword
OFFICE
DRS:EB1/SRI
C:
NAME
GGeorge
TFarnholtz
SIGNATURE
/RA/
/RA/
DATE
12/8/15
12/8/15
Letter to Dennis L. Koehl from Thomas R. Farnholtz dated, December 8, 2015
SUBJECT:
SOUTH TEXAS PROJECT - NOTIFICATION OF NRC DESIGN BASES
INSPECTION (05000445/2016007 and 05000446/2016007) AND INITIAL
REQUEST FOR INFORMATION
Distribution:
Regional Administrator (Marc.Dapas@nrc.gov)
Deputy Regional Administrator (Kriss.Kennedy@nrc.gov)
DRP Director (Troy.Pruett@nrc.gov)
DRP Deputy Director (Ryan.Lantz@nrc.gov)
DRS Director (Anton.Vegel@nrc.gov)
DRS Deputy Director (Jeff.Clark@nrc.gov)
Senior Resident Inspector (Alfred.Sanchez@nrc.gov)
Resident Inspector (Nicholas.Hernandez@nrc.gov)
Branch Chief, DRP/B (Nick.Taylor@nrc.gov)
Senior Project Engineer, DRP/B (David.Proulx@nrc.gov)
Project Engineer, DRP/B (Shawn.Money@nrc.gov)
Project Engineer, DRP/B (Steven.Janicki@nrc.gov)
STP Administrative Assistant (Lynn.Wright@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Project Manager (Lisa.Regner@nrc.gov)
Acting Team Leader, DRS/TSS (Eric.Ruesch@nrc.gov)
RITS Coordinator (Marisa.Herrera@nrc.gov)
ACES (R4Enforcement.Resource@nrc.gov)
Regional Counsel (Karla.Fuller@nrc.gov)
Technical Support Assistant (Loretta.Williams@nrc.gov)
Congressional Affairs Officer (Jenny.Weil@nrc.gov)
RIV Congressional Affairs Officer (Angel.Moreno@nrc.gov)
RIV/ETA: OEDO (Cindy.Rosales-Cooper@nrc.gov)