ML18061A041
| ML18061A041 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 03/01/2018 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Welsch J Pacific Gas & Electric Co |
| References | |
| IR 2018010 | |
| Download: ML18061A041 (6) | |
See also: IR 05000275/2018010
Text
March 1, 2018
Mr. James M. Welsch
Vice President, Nuclear Generation
and Chief Nuclear Officer
Pacific Gas and Electric Company
P.O. Box 56
Mail Code 104/6
Avila Beach, CA 93424
SUBJECT: DIABLO CANYON POWER PLANT, UNITS 1 AND 2 - NOTIFICATION OF
NRC DESIGN BASES ASSURANCE INSPECTION (PROGRAMS) AND
(05000275/2018010 05000323/2018010) AND INITIAL REQUEST FOR
INFORMATION
Dear Mr. Welsch:
On June 11, 2018, the NRC will begin an inspection at your Diablo Canyon Power Plant,
Units 1 and 2. A three-person team will perform this inspection using NRC Inspection
Procedure 71111.21N, Design Bases Inspection (Programs), Attachment 1, Environmental
Qualification Under 10 CFR 50.49 Programs, Processes, and Procedures.
This inspection will evaluate the implementation of the environmental qualification of electrical
equipment program, as implemented by the Diablo Canyon Power Plant, Units 1 and 2,
Operating License. Additionally, the team will perform an inspection of the environmental
qualification documentation files to verify that electrical equipment important to safety meets the
requirements of 10 CFR 50.49. The team will select components that will be subjected to harsh
environments and are required to 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 on-site inspection by the team. The inspection team will consist of three NRC inspectors.
The current inspection schedule is as follows:
On-site Information Gathering Visit: May 7-10, 2018
Preparation Week: June 4-8, 2018
On-site Weeks: June 11-15, 2018, and June 25-29, 2018
The purpose of the information gathering visit is to meet with members of your staff to become
familiar with the Diablo Canyon Power Plant, Units 1 and 2, environmental qualification
program. The lead inspector will request a meeting with your personnel to discuss the site
environmental qualification program and procedures. Additionally, the lead inspector will
request a discussion with your staff to become familiar with the environmental qualification
regulations and standards to which the site is committed. Additional information and
documentation needed to support the inspection will be identified during the inspection,
including interviews with engineering managers and engineers.
J. Welsch 2
Our experience with these inspections has shown that they are 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. This information should be made available to the lead inspector by April 30,
2018. Since the inspection will be concentrated on the environmental qualification of the
equipment, the equipment qualification master list should be available to review prior to the
information gathering visit to assist in our selection of components.
It is requested that this information be provided to the team leader as the information is
generated during the inspection. Additional requests by inspectors will be made during the
on-site 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 on-
site 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 team leader for this inspection is Ronald A. Kopriva, Senior Reactor Inspector. We
understand that our licensing engineer contact for this inspection is Ms. Amanda Sorensen. If
there are any questions about the inspection or the requested materials, please contact the
team leader by telephone at 817-200-1104 or by e-mail at Ron.Kopriva@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.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice and Procedure," 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 Nos. 50-275 and 50-323
License Nos. DPR-80 and DPR-82
Enclosure:
Initial Request for Information
cc: Electronic Distribution
Initial Request for Information
Design Bases Assurance Inspection (Programs), Environmental Qualification
Diablo Canyon Power Plant, Units 1 and 2
Inspection Report: 05000275/2018010 and 05000323/2018010
Information Gathering Dates: May 7-10, 2018
Inspection Dates: June 11-15, 2018
June 25-29, 2018
Inspection Procedure: IP 71111, Attachment 21N, Design Bases Assurance
Inspection (Programs)
Team Leader: Ronald A. Kopriva, Senior Reactor Inspector
I. Information Requested for Information Gathering Visit (May 7, 2018)
The following information should be provided to the lead inspector in hard copy or
electronic format (Certrec IMS preferred), to the attention of Ronald A. Kopriva, Senior
Reactor Inspector, by April 30, 2018, 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 inspector(s), and provide subject
documentation during the first day of the on-site inspection.
1. List of components that are in equipment qualification master list. If the plant is
approved to categorize structures, systems, and component in accordance with
10 CFR 50.69, please provide the Risk Informed Safety Category of the component.
2. Listing of the equipment qualification master list components sorted by Birnbaum risk
importance.
3. List of all post-accident monitoring instrumentation components and locations.
4. Documents which show the environmental service conditions expected for areas in
which the environmentally qualified components are located.
5. Diablo Canyon Power Plant, Units 1 and 2, word-searchable updated final safety
analysis report (UFSAR), license conditions, and technical specifications.
Specifically identify which UFSAR sections address environmental (including
seismic) qualification.
Enclosure
6. NRC Safety Evaluation Report(s) associated with the Diablo Canyon Power Plant,
Units 1 and 2, environmental qualification program.
7. Identify the various environmental qualification standards (including year, edition, or
revision) that Diablo Canyon Power Plant, Units 1 and 2, is committed.
8. Identify whether Diablo Canyon Power Plant, Units 1 and 2, has entered its period of
extended operation (i.e., operation past the original 40-year license period).
9. Site (and corporate if applicable) procedures associated with the 10 CFR 50.49
environmental qualification program for electrical components. Additionally, please
provide similar procedures used to verify mechanical components meet their
10 CFR Part 50, Appendix A, Criterion 4, Environmental and Dynamic Effects
Design Bases. Include procedures for procurement of qualified equipment,
maintenance of qualified equipment, and modification to qualified equipment
(including equivalency or commercial grade dedication programs).
10. Site high energy line break analyses, including associated plant area drawings.
11. Procedures for material storage and shelf life controls.
12. List of commercial grade dedication evaluations performed, for which the dedicated
parts have been issued for installation on environmental qualification applications in
the plant, for the previous 5 years. Include description of the component the part
was issued to repair, work order, and date issued or installed.
13. List of condition reports related to the environmental qualification program or
environmental qualification of components (both electrical and mechanical) for the
previous 5 years.
14. Lists of modifications, repairs, or replacement of equipment qualification master list
components completed for the previous 5 years.
15. List of modifications, repairs, or replacements of containment penetrations for the
previous 5 years.
16. List of components removed from the environmental qualification program since
beginning of operation.
17. Any self-assessments and quality assurance assessments of the environmental
qualification program performed in the previous 5 years.
18. List of systems, system numbers/designators, and corresponding names.
II. Discussions Requested during Information Gathering Visit
1. Interview with representative to discuss site environmental qualification service
condition analyses for plant areas, including plant drawings and assumptions. This
includes analysis for areas that are subject to high energy line breaks (HELB).
2
2. Interview with representative to discuss environmental qualification mandated
maintenance elements integrated into plant programs and procedures.
3. Interview with representative to discuss maintaining qualification for plant/equipment
that has entered its period of extended operation, if applicable.
III. Information Requested for Inspection Preparation (June 11, 2018)
1. Equipment qualification documentation files, including test reports, for the electrical
components selected by the team leader listed from the equipment qualification
master list.
2. References associated with the electrical components equipment qualification
document files.
3. Vendor manuals and technical sheets associated with the selected electrical
components.
4. Tours of the rooms in which the selected electrical components are installed.
5. Tour of stored selected electrical components in the warehouse.
Inspector Contact Information:
Ronald A. Kopriva Wes Cullum Nnaerika Okonkwo
Senior Reactor Inspector Reactor Inspector Reactor Inspector
817-200-1104 817-200-1563 817-200-1114
Ron.Kopriva@nrc.gov Wes.Cullum@nrc.gov Nnaerika.Okonkwo@nrc.gov
Mailing Address:
U.S. NRC, Region IV
Attn: Ronald A. Kopriva
1600 East Lamar Blvd.
Arlington, TX 76011-4511
3
SUNSI Review ADAMS: Non-Publicly Available Non-Sensitive Keyword:
By: TFarnholtz Yes No Publicly Available Sensitive NRC-002
OFFICE RI:EB1 C:EB1
NAME RKopriva TFarnholtz
SIGNATURE /RA/ /RA/
DATE 3/1/18 3/1/18