ML13168A418
| ML13168A418 | |
| Person / Time | |
|---|---|
| Site: | South Texas  (NPF-076, NPF-080) |
| Issue date: | 06/17/2013 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Koehl D South Texas |
| References | |
| IR-13-007 | |
| Download: ML13168A418 (8) | |
See also: IR 05000498/2013007
Text
June 17, 2013
Mr. Dennis L. Koehl
President & CEO/CNO
STP Nuclear Operating Company
P.O. Box 289
Wadsworth, TX 77483
SUBJECT:
SOUTH TEXAS PROJECT - INITIAL INFORMATION REQUEST FOR NRC
TRIENNIAL BASELINE COMPONENT DESIGN BASES INSPECTION NRC
INSPECTION REPORT 05000498/2013007; 05000499/2013007
Dear Mr. Koehl:
On September 24, 2013, the NRC will begin a triennial baseline Component Design Bases
Inspection at the South Texas Project. A seven person team will perform this inspection using
NRC Inspection Procedure 71111.21, "Component Design Bases Inspection."
The inspection focuses on components, operating experience, 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 3-weeks of onsite inspection by the team. The inspection will consist of
four NRC inspectors and two contractors, of which five will focus on engineering and one on
operations. The current inspection schedule is as follows:
Onsite information gathering visit: September 24 - 26, 2013
Preparation Week: September 30 - October 4, 2013
Onsite weeks: October 7 - 11, 2013; October 21 - 25, 2013; November 4-8, 2013
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 of time 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 the
inspection, including interviews with engineering managers, engineers, and probabilistic safety
assessment staff.
UNITED STATES
NUCLEAR REGULATORY COMMISSION
RE G IO N I V
1600 EAST LAMAR BLVD
ARLINGTON, TEXAS 76011-4511
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 September 16, 2013. 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.
During the onsite portion of our inspection, we request that you make available a conference
room large enough to accommodate the inspection team. In that conference room, please
make available a computer with access to a printer, your condition reporting database, and your
documentation database.
The lead inspector for this inspection is Wayne Sifre. We understand that our licensing
engineer contact for this inspection is Robin Savage. If there are any questions about the
inspection or the requested materials, please contact the lead inspector at (817) 200-1193 or via
e-mail at Wayne.Sifre@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 NRC's "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/ Ray L. Kellar for
Thomas R. Farnholtz, Chief
Engineering Branch 1
Division of Reactor Safety
Dockets: 50-498; 50-499
Enclosure:
Component Design Basis Inspection
Document Request
D. Koehl
- 4 -
Electronic distribution by RIV:
Regional Administrator (Art.Howell@nrc.gov)
Acting Deputy Regional Administrator (Robert.Lewis@nrc.gov)
DRP Director (Kriss.Kennedy@nrc.gov)
DRS Director (Tom.Blount@nrc.gov)
DRS Deputy Director (Jeff.Clark@nrc.gov)
Senior Resident Inspector (Alfred.Sanchez@nrc.gov)
Acting Resident Inspector (David.You@nrc.gov)
Branch Chief, DRP/A (Wayne.Walker@nrc.gov)
Senior Project Engineer, DRP/A (David.Proulx@nrc.gov)
STP Administrative Assistant (Lynn.Wright@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Balwant.Singal@nrc.gov)
Branch Chief, DRS/TSB (Ray.Kellar@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/ETA: OEDO (Doug.Huyck@nrc.gov)
ADAMS: No Yes
SUNSI Review Complete
Reviewer Initials: WCS
Publicly Available
Non-Sensitive WCS
Non-publicly Available
Sensitive
RIV:RI:DRS/EB1
BC/EB1
WSifre
TFarnholtz RLK for
/RA/
/RA/
6/17/2013
6/17/2013
OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax
R:\\_REACTORS\\_STP\\2013\\STP 2013007-RFI-CDBI-WCS.docx ML13168A418
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Enclosure
INFORMATION REQUEST FOR SOUTH TEXAS PROJECT COMPONENT DESIGN BASES
(CDBI) INSPECTION
Inspection Report: 05000498/2013007; 05000499/2013007
Information Gathering Dates:
September 24-26, 2013
On-site Inspection Dates:
October 7-11, 2013; October 21-25, 2013;
November 4-8, 2013
Inspection Procedure:
IP 71111.21, "Component Design Bases
Inspection"
Lead Inspector/Team Leader:
817-200-1193
Wayne.Sifre@nrc.gov
I.
Information Requested Prior to the information Gathering Visit (September 24,
2013)
The following information (Section I of this enclosure) should be sent to the Region IV
office in hard copy or electronic format (ims.certrec.com or compact disc, preferred), in
care of Wayne Sifre, by September 16, 2013, to facilitate the reduction in the items to be
selected for a final list during the preparation week of September 30, 2013. 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 boiling
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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Enclosure
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.
8. A list of operating experience evaluations for the last 2 years.
9. A list of all time-critical operator actions in procedures.
10. A list of permanent and temporary modifications sorted by component identified in
Item 1.
11. List of current "operator work arounds/burdens."
12. A list of the design calculations, which provide the design margin information for
components included in Item 1. (Calculations should be available during the information
gathering visit).
13. List of root cause evaluations associated with component failures or design issues
initiated/completed in the last 5 years.
14. Current management and engineering organizational charts.
15. South Texas Project IPE and IPEEE, if available electronically.
16. List of any common-cause failures of components in the last 3 years.
17. An electronic copy of the licensing bases documents (i.e., Updated Final Safety Analysis
Report, Technical Specifications).
18. An electronic copy of the System Health notebooks.
19. System Description Manuals with simplified drawings of plant systems
II.
Information Requested to be Available on First Day of Preparation Week
(September 30, 2013)
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.
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Enclosure
3. 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).
4. Copies of operability evaluations associated with each of the selected components and
plans for restoring operability, if applicable.
5. Copies of selected operator work-around evaluations associated with each of the
selected components and plans for resolution, if applicable.
6. Copies of any open temporary modifications associated with each of the selected
components, if applicable.
7. 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).
8. A copy of any internal/external self-assessments and associated corrective action
documents generated in preparation for the inspection.
9. A copy of engineering/operations related audits completed in the last 2 years.
10. List of motor operated valves (MOVs) in the program, design margin and risk ranking.
11. List of air operated valves (AOVs) in the valve program, design and risk ranking.
12. Structure, system and components in the Maintenance Rule (a)(1) category.
13. Site top 10 issues list.
14. Procedures used to accomplish operator actions associated with the basic events in
your PRA.
15. List of licensee contacts for the inspection team with pager or phone numbers.
16. Mechanical piping drawings for:
Engineered safety features
Emergency core cooling systems
17. 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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Enclosure
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.
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
Procurement documents for components selected
Plant procedures (normal, abnormal, emergency, surveillance, etc.)
Vendor manuals
Inspector Contact Information:
Senior Reactor Inspector
(817) 200-1193
Wayne.Sifre@nrc.gov
Mailing Address:
US NRC, Region IV
Attn: Wayne Sifre
1600 East Lamar Blvd.
Arlington, TX 76011