ML110470585
| ML110470585 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/16/2011 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Conway J Pacific Gas & Electric Co |
| References | |
| IR-11-004 | |
| Download: ML110470585 (7) | |
See also: IR 05000275/2011004
Text
UNITED STATES
NUC LE AR RE G ULATO RY C O M M I S S I O N
R E GI ON I V
612 EAST LAMAR BLVD , SU I TE 400
AR LI N GTON , TEXAS 76011-4125
February 16, 2011
John T. Conway
Senior Vice President-Energy &
Supply and Chief Nuclear Officer
Pacific Gas and Electric Company
Diablo Canyon Nuclear Plant
77 Beale Street, Mail Code B32
San Francisco, CA 94105
SUBJECT: DIABLO CANYON POWER PLANT - NOTIFICATION OF INSPECTION
(NRC INSPECTION REPORT 05000275/2011004; 05000323/2011004) AND
REQUEST FOR INFORMATION
Dear Mr. Conway:
On June 27, 2011, the NRC will begin the onsite portion of the Gas Accumulation Management
in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems Temporary
Instruction at your Diablo Canyon Power Plant. This inspection will be performed in accordance
with NRC Temporary Instruction (TI) 2515/177.
Experience has shown that this inspection is resource intensive both for the NRC inspectors
and your staff. In order to minimize the impact to your onsite resources and to ensure a
productive inspection, we have enclosed a request for documents needed for this inspection.
The documents have been divided into two groups.
- The first group lists information necessary for our initial inspection scoping and in-office
preparation activities. This information should be separated by information request number,
especially if provided electronically (e.g., folder with the information request number). This
information should be available to the inspector no later than June 6, 2011. Upon review of
these documents, the inspectors will select additional documentation for review upon arrival.
By June 23, 2011, the inspector will communicate the initial selected samples.
- The second group of documents requested is needed to support our onsite inspection
activities. This set of documents should be available to the inspector on June 27, 2011. It is
also requested that corrective action documents and responses to questions developed
during the inspection be provided to the inspector as the documents are generated.
We have discussed the schedule for these inspection activities with your staff and understand
that our regulatory contact for this inspection will be Michael McCoy of your licensing
organization. If there are any questions about this inspection or the material requested, please
contact the inspector, Dustin Reinert, at 817-860-8244 or by email at dustin.reinert@nrc.gov.
Pacific Gas and Electric Company 2
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 Code of Federal Regulations, Title 10, Part 2.390 of the NRC's Rules of
Practice, a copy of this letter and its enclosure will be available electronically for public
inspection in the NRC Public Document Room or from the Publicly Available Records (PARS)
component of NRC's 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: 50-275; 50-323
Enclosure: MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE
COOLING, DECAY HEAT REMOVAL, AND CONTAINMENT SPRAY
SYSTEMS TEMPORARY INSTRUCTION DOCUMENT REQUEST
cc w/encl:
Sierra Club Santa Lucia Chapter
ATTN: Andrew Christie
P.O. Box 15755
San Luis Obispo, CA 93406
Jane Swanson
San Luis Obispo
Mothers for Peace
P.O. Box 3608
San Luis Obispo, CA 93403
James Grant, County Administrative Officer
San Luis Obispo County Board of
Supervisors
1055 Monterey Street, Suite D430
San Luis Obispo, CA 93408
Pacific Gas and Electric Company 3
Truman Burns\Robert Kinosian
California Public Utilities Commission
505 Van Ness Ave., Rm. 4102
San Francisco, CA 94102
Jennifer Post, Esq.
Pacific Gas & Electric Co.
77 Beale Street, Room 2496
Mail Code B30A
San Francisco, CA 94120
Gary Butner
Chief, Radiologic Health Branch
California Department of Public Health 3
P.O. Box 997414 (MS 7610)
Sacramento, CA 95899-7414
The City Editor of
The Tribune
3825 South Higuera Street
P.O. Box 112
San Luis Obispo, CA 93406-0112
James D. Boyd, Commissioner
California Energy Commission
1516 Ninth Street (MS 31)
Sacramento, CA 95814
James R. Becker, Site Vice President
Pacific Gas and Electric Company
Diablo Canyon Nuclear Plant
P.O. Box 56, Mail Station 104/6/601
Avila Beach, CA 93424
Jennifer Tang
Field Representative
United States Senator Barbara Boxer
1700 Montgomery Street, Suite 240
San Francisco, CA 94111
Chief, Technological Hazards Branch
FEMA Region IX
1111 Broadway, Suite 1200
Oakland, CA 94607-4052
Pacific Gas and Electric Company 4
Electronic distribution by RIV:
Regional Administrator (Elmo.Collins@nrc.gov)
Deputy Regional Administrator (Art.Howell@nrc.gov)
DRP Director (Kriss.Kennedy@nrc.gov)
DRP Deputy Director (Troy.Pruett@nrc.gov)
DRS Director (Anton.Vegel@nrc.gov)
DRS Deputy Director (Vacant)
Senior Resident Inspector (Michael.Peck@nrc.gov)
Branch Chief, DRP/B (Geoffrey.Miller@nrc.gov)
Senior Project Engineer, DRP/B (Rick.Deese@nrc.gov)
Project Engineer, DRP/B (Greg.Tutak@nrc.gov)
Project Engineer, DRP/B (Nestor.Makris@nrc.gov)
DC Administrative Assistant (Agnes.Chan@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Alan.Wang@nrc.gov)
Branch Chief, DRS/TSB (Michael.Hay@nrc.gov)
RITS Coordinator (Marisa.Herrera@nrc.gov)
Regional Counsel (Karla.Fuller@nrc.gov)
Congressional Affairs Officer (Jenny.Weil@nrc.gov)
OEMail Resource
Inspection Reports/MidCycle and EOC Letters to the following:
ROPreports
Only inspection reports to the following:
OEDO RIV Coordinator (James.Trapp@nrc.gov)
DRS/TSB STA (Dale.Powers@nrc.gov)
S:\DRS\REPORTS DRAFT\DC2011004-RFI-DRR.docx ADAMS ML
ADAMS: No 7 Yes 7 SUNSI Review Complete Reviewer Initials: DRR
7 Publicly Available 7 Non-Sensitive
Non-publicly Available Sensitive
RIV/EB1/RI EB1/RI EB1: Chief
D. Reinert A. Fairbanks R.Latta for TFarnholtz
2/16 /2011 2/16/2011 2/16/2011
/RA/ /RA/ /RA/
OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY
HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSTRUCTION
DOCUMENT REQUEST
Inspection Report: 05000275/2011004; 05000323/2011004
Inspection Dates: June 27 - July 1, 2011
Inspection Procedure: TI 2515/177, Management of Gas Accumulation in Emergency
Core Cooling, Decay Heat Removal, and Containment Spray
Systems
Inspector: Dustin Reinert, Reactor Inspector
(817) 860-8244
dustin.reinert@nrc.gov
The following information should be sent to the Region IV office in hard copy or electronic
format (ims.certrec.com or compact disc, preferred), in care of Dustin Reinert, to facilitate the
selection of specific items that will be reviewed during the onsite inspection week. The
inspector will select specific items from the information requested below and then request from
your staff additional documents needed during the onsite inspection weeks. Also, we request
that you categorize the documents in your response with the numbered list below. Please
provide requested documentation electronically if possible. 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. If you have any questions regarding
this information request, please call the inspector as soon as possible.
I. Information Requested By June 6, 2011
1. List of corrective action program documents (with a short description) associated with
Generic Letter (GL) 2008-01, voids in piping, and pressure transients for the previous
three years.
2. List of changes (with a short description and tracking number) to the final safety analysis
report (FSAR), technical specifications, technical specification bases, and technical
requirements manual associated with the resolution of GL 2008-01.
3. List of calculations associated with GL 2008-01, including calculations that have been
changed or created in response to GL 2008-01 (with a short description of the
calculation and the change).
4. List (with a short description) of gas intrusion mechanisms that apply to the plant and the
affected system locations (e.g. identify the source, conditions, and expected void
locations).
5. List of the suction piping sections identified as susceptible to gas accumulation (the list
should identify the corresponding system).
6. List of the discharge piping sections identified as susceptible to gas accumulation (the
list should identify the corresponding system).
1 Enclosure
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY
HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSTRUCTION
DOCUMENT REQUEST
7. Copies of isometric drawings of the emergency core cooling, residual heat removal, and
containment spray systems (hard-copies are preferred).
8. Copies of piping and instrumentation diagrams (P&IDs) of the emergency core cooling,
residual heat removal, and containment spray systems (hard-copies are preferred).
9. Copies of program documents and procedures developed to implement the resolution of
10. List of actions that were completed in response to GL 2008-01.
11. Copies of the modification packages for hardware modifications as part of the resolution
of GL 2008-01.
12. Design basis documents of the emergency core cooling, residual heat removal, and
containment spray systems.
13. Design basis documents of keep-full systems of the emergency core cooling, residual
heat removal, and containment spray systems.
14. System walkdown reports associated with the resolution of GL 2008-01.
15. If applicable, provide a list of inaccessible locations where plant walkdowns of the
emergency core cooling, residual heat removal, and containment spray systems have
not been completed. Include an explanation of why each area is considered
inaccessible.
16. Copies of surveillance procedures associated with the resolution of GL 2008-01 and the
results of the last two surveillances for the emergency core cooling, residual heat
removal, and containment spray systems.
17. Copies of procedures used for detecting and determining void volumes.
18. Copies of procedures used for filling and venting.
19. Copies of trends of periodic venting results.
20. Copies of the engineering evaluations performed for all identified voids in the past three
years.
21. Basis for the void acceptance criteria (e.g. calculation). If applicable, provide the
justification for any deviation from the void acceptance criteria established by the Office
of Nuclear Reactor Regulation (NRR).
22. Copy of any void transport analyses.
23. Copy of vortexing calculations associated with systems under the scope of GL 2008-01.
24. Copies of self-assessments associated with the implementation of the GL 2008-01
2 Enclosure
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY
HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSTRUCTION
DOCUMENT REQUEST
program.
II. Information Requested By June 27, 2011
25. Copies of the selected corrective action program documents.
26. Copies of the selected licensing and design basis document changes.
27. Copies of the selected calculations.
28. Copies of training documents that ensure that personnel are aware of gas-related
concerns.
29. Copies of corrective action program implementing procedures.
30. Electronic copies of the current technical specifications, technical specification bases,
final safety analysis report, and technical requirements manual.
Mailing Address:
US NRC Region IV
Attn: Dustin Reinert
612 E. Lamar Blvd., Suite 400
Arlington, TX 76011-4125
3 Enclosure