ML15132A711
| ML15132A711 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 05/11/2015 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Kevin Mulligan Entergy Operations |
| G. George | |
| References | |
| IR 2015007 | |
| Download: ML15132A711 (9) | |
See also: IR 05000416/2015007
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION IV
1600 E. LAMAR BLVD.
ARLINGTON, TX 76011-4511
May 11, 2015
Mr. Kevin Mulligan
Site Vice President Operations
Entergy Operations, Inc.
Grand Gulf Nuclear Station
P.O. Box 756
Port Gibson, MS 39150
SUBJECT:
GRAND GULF NUCLEAR STATION - NOTIFICATION OF NRC COMPONENT
DESIGN BASES INSPECTION (05000416/2015007) AND INITIAL REQUEST
FOR INFORMATION
Dear Mr. Mulligan:
On July 14, 2015, the Nuclear Regulatory Commission (NRC) will begin a triennial baseline
Component Design Bases Inspection at the Grand Gulf Nuclear Station. A 7-person team will
perform this inspection using NRC Inspection Procedure 71111.21, Component Design Bases
Inspection.
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 lead inspector and a senior
reactor analyst, and 3-weeks of onsite inspection by the team. The inspection will consist of a
team leader, four NRC inspectors, and two contractors. Five of team members will focus on
engineering and one will focus on operations. The current inspection schedule is as follows:
Onsite Information Gathering Visit: July 14, 2015
In-Office Preparation Week: July 20, 2015
Onsite Week(s): July 27-31, 2015; August 10-14, 2015, August 24-28, 2015
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.
K. Mulligan
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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 July 6, 2015. 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 includes 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 Taylor Coles. 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.
K. Mulligan
- 3 -
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
Docket: 50-416
License: NPF-29
Enclosure:
Component Design Bases Inspection
Request for Information
Electronic Distribution for the Grand Gulf Nuclear Station
- 1 -
Enclosure
Initial Request for Information
Component Design Bases Inspection
Grand Gulf Nuclear Station
Inspection Report: 05000416/2015007
Information Gathering Dates:
July 14, 2015
Inspection Dates:
July 27-31, 2015; August 10-14, 2015, August 24-28, 2015
Inspection Procedure:
IP 71111.21, Component Design Bases Inspection
Lead Inspector:
Gerond A. George, Senior Reactor Inspector
I.
Information Requested Prior to Information Gathering Visit (July 14, 2015)
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 July 6, 2015, to facilitate the reduction in the items to be selected
for a final list following the information gathering visit on July 14, 2015. 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.
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
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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. Site top 10 issues list.
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. Grand Gulf Nuclear Station IPEEE, if available electronically.
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
125VDC/24VDC safety class systems
18. List of any common-cause failures of components in the last 3 years.
19. An electronic copy of the Design Bases Documents.
20. An electronic copy of the System Health notebooks.
II.
Information Requested to be Available on First Day of Preparation Week (July 20,
2015)
1. List of condition reports (corrective action documents) associated with each of the
selected components for the last 5 years.
- 3 -
2. The corrective maintenance history associated with each of the selected components
for the last 2 years.
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. Procedures used to accomplish operator actions associated with the basic events in
your PRA.
14. 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.
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).
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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 A. George
1600 East Lamar Blvd.
Arlington, TX 76011-4511
K. Mulligan
- 3 -
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
Docket: 50-416
License: NPF-29
Enclosure:
Component Design Bases Inspection
Request for Information
Electronic Distribution for the Grand Gulf Nuclear Station
Distribution
See next page
S\\:DRS\\REPORTS\\REPORTS FINAL: GG 2015007 RFI
SUNSI Review
By:
ADAMS:
Yes No
Sensitive
Non-Sensitive
Non-Publicly Available
Publicly Available
Keyword
OFFICE
DRS/EB1/SRI:
EB1/C:
NAME
GGeorge
TFarnholtz/GReplogle for
SIGNATURE
/RA/
/RA/
DATE
5/11/15
5/12/15
OFFICIAL RECORD COPY
Letter to Kevin Mulligan from Thomas Farnholtz dated May 11, 2015
SUBJECT:
GRAND GULF NUCLEAR STATION - NOTIFICATION OF NRC COMPONENT
DESIGN BASES INSPECTION (05000416/2015007) AND INITIAL REQUEST
FOR INFORMATION
Electronic Distribution by RIV:
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 (Mark.Schweig@nrc.gov)
Resident Inspector (Neil.Day@nrc.gov)
Administrative Assistant (Alley.Farrell@nrc.gov)
Branch Chief, DRP/C (Greg.Warnick@nrc.gov)
Senior Project Engineer, DRP/C (Ray.Azua@nrc.gov)
Project Engineer, DRP/C (Paul.Nizov@nrc.gov)
Project Engineer, DRP/C (Michael.Stafford@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Rebecca.Richardson@nrc.gov)
Team Leader, DRS/TSS (Don.Allen@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 (Michael.Waters@nrc.gov)