ML16341D598
| ML16341D598 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 01/29/1986 |
| From: | Schierling H Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC-64501, TAC-64502, NUDOCS 8602180216 | |
| Download: ML16341D598 (14) | |
Text
Docket Nos.
50-275 and 50-323 January 29, 1986 LICENSEE: Pacific Gas and Electric Company (PG&E)
FACILITY: Diablo Canyon Nuclear Power Plant, Units 1 and 2
SUBJECT:
MEETING
SUMMARY
- DETAILED CONTROL ROOM DESIGN REVIEll AND THREE OTHER SUBJECTS On January 8, 1986 NRC staff met with PG&E representatives and discussed the PG&E efforts for the detailed control room design review (DCRDR).
Enclosure 1 includes the meeting notice and list of attendees (Table 1).
The same subject had been discussed in detail at a previous meeting on November 9, 1985 when the staff requested PG&E to respond to a
number of issues related to the 9 elements of the DCRDR.
The main subject of the meeting was a discussion of the Safety Function and Task Analysis (SFTA) elements of the DCRDR, in particular the documentation of this effort.
Further details of the discussion are provided in Enclosure 2 which was prepared by the staff's consultants, Science Applications International Corporation (SAIC). It also includes a draft PG&E report on the subject which will be included in a forthcoming PG&E submittal. After the November meeting PG&E contracted with General Physics Corporation as consultant to develop the detailed program for and perform the SFTA.
The company has performed DCRDR task analyses for other facilities, including Trojan and Indian Point 3.
PG&E stated that they will submit their response to the 9 elements in February.
Regarding the submittal of the Supplement to Summary Report, as discussed at the November 1985 meeting, the staff requested PG&E to reevaluate the schedule of mid-1987.
Staff stated that it is not necessary that changes resulting from the DCRDR be implemented prior to the submittal of the supplement.
After the DCRDR meeting the staff and PG&E discussed the three additional subjects.
A summary is provided below.
Snubber Reduction Program:
PG&E briefly explained its snubber reduction program.
Attendees are listed in Table 2, Enclosure 1.
PG&E stated that they intend to apply Code Case N-411 for variable snubber damping.
The criteria will be used for the snubber reduction program and for future piping and pipe support analyses.
PG&E expects that this will lead to the removal of a substantial number of snubbers.
NRC staff stated that a
PG&E submittal requesting approval of the code case for application to Diablo Canyon should include the detailed criteria to be used in the analysis and that any new loads resulting from the revised analysis should be considered with respect to their impact on structures and equipment.
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The NRC staff and PG&E briefly discussed the NRC requests for additional information (RAI) issued by NRC letter dated January 8, 1986.
Attendees are listed in Table 3, Enclosure 1.
In particular, the staff provided further clarification regarding the questions on the spent fuel pool cooling system.
PG&E stated they considered the redundancy requirements of GDC 44 to be met by fuel pool boiling and the capability of subsequent pool water makeup from various sources.
The staff stated that the portable
- pump, as discussed in Section
- 9. 1.3.3. 1 and shown in Figure 3.2-13 of the FSAR, appears to meet the requirements regarding single failure of an active component.
However, to determine the adequacy of the system the following additional information for various spent fuel load conditions should be provided:
1.
Time from loss of cooling to start of boiling; 2.
Time from loss of cooling to start of uncovering of fuel; 3.
Time required for portable pump to be fully operational, including pump installation; 4.
Sources of makeup water, including description, design with respect to seismic capability, and technical specifications; 5.
Time for makeup sources to be fully operational.
The staff requested that the above information be submitted as a supplement to the Reracking Report provided earlier by PG&E.
The staff requested that the supplement should be provided promptly, in addition to the response to the RAI letter.
Unit 2 Power Ascension Program:
At the request of the staff PG&E briefly described Unit 2 reactor trips that occurred as a result of load rejection tests performed during the Unit 2 power ascension program.
Attendees are listed in Table 4 of Enclosure 1.
A sugary was provided by PG&E and is enclosed as Enclosure 3.
/s/HSchierling
Enclosures:
As stated Hans Schierling, Senior Project Manager PWR Project Directorate 83 Division of PWR Licensing-A cc w/enclosures:
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Spent Fuel Pool Reracking:
The NRC staff and PGSE briefly discussed the NRC requests for additional information (RAI) issued by NRC letter dated January 8, 1986.
Attendees are listed in Table 3, Enclosure l.
In particular, the staff provided further clarification regardi g the questions on the spent fuel pool cooling system.
PGSE stated they co sidered the redundancy requirements of GDC 44 to be met by fuel pool iling and the capability of subsequent pool water makeup from various ources.
The staff stated that the portable
- pump, as discussed in Section
. 1.3.3. 1 and shown in Figure 3.2-13 of the FSAR, meet the requirements rega ding single failure of an active component.
However, to determine the ade acy of the system the following additional information for various spent uel load conditions should be provided:
1.
Time from loss of cooling to start of boiling; 2.
Time from loss of cooling to start of uncovering of fuel; 3.
Time required for portable pump o be fully operational, including pump installation;
- 4. 'ources of makeup water, in uding description, design with respect to seismic capabil ty, and technical specifications; 5.
Time for makeup sources to be fully operational.
The staff requested that the a ove information be submitted as a supplement to the Reracking Report provi ed earlier by PGKE.
The staff requested that the supplement should be pr ided promptly, in addition to the response to the RAI letter.
Unit 2 Power Ascension P ogram:
At the request of the staff PG&E briefly described Unit 2 reacto trips that occurred as a result of load rejection tests performed during the Unit 2 power ascension program.
Attendees are listed in Table 4 of nclosure l.
A summary was provided by PGSE and is enclosed as Enclosur 3.
Enclosures.
As state Hans Schierling, Senior Project Manager PWR Project Directorate ¹3 Division of PWR Licensing-A cc w/enclosures:
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Pacific Gas and Electric Company Diablo Canyon Mr. Gordon A. Silver Ms. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Harry M. Willis, Esq.
Seymour E Willis 601 California Street, Suite 2100 San Francisco, California 94108 Mr. Richard Hubbard MHB Technical Associates Suite K
1725 Hamilton Avenue San Jose, California 95125 Mr. John Marrs, Managing Editor San Luis Obis o Count Tele ram Tribune o nson venue P. 0.
Box 112 San Luis Obispo, California 93406 CC:
Philip A. Crane, Jr.,
Esq.
Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Mr. Malcolm H. Furbush Vice President - General Counsel Pacific Gas 8 Electric Company Post Office Box 7442 San Francisco, California 94120 Janice E. Kerr, Esq.
California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.
4623 More Mesa Drive Santa Barbara, California 93105 Ms. Elizabeth Apfelberg 1415 Cozadero San Luis Obispo, California 93401 Resident Inspector/Diablo Canyon NPS c/o US Nuclear Regulatory Commission P.
0.
Box 369 Avila Beach, California 93424 Ms.
Raye Fleming 1920 Mattie Road Shell Beach, California 93440 Joel
- Reynolds, Esq.
John R. Phillips, Esq.
Center for Law in the Public Interest 10951 West Pico Boulevard Third Floor Los Angeles, California 90064 Mr. Dick Blankenbur g Editor 8 Co-Publisher South County Publishing Company P. 0.
Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.
Norton, Burke, Berry 5 French, P.C.
202 E.
Osborn Road P.
0.
Box 10569 Phoenix, Arizona 85064 Mr.
W.
C. Gangloff Westinghouse Electric Corporation P. 0.
Box 355 Pittsburgh, Pennsylvania 15230 David F. Fleischaker, Esq.
P. 0.
Box 1178 Oklahoma City, Oklahoma 73101
'I l
Pacific Gas 8 Electric Company Diablo Canyon CC:
Arthur C. Gehr, Esq.
Snell
& Wilmer 3100 Valley Center
- Phoenix, Arizona 85073 Mr. Leland M. Gustafson, Manager Federal Relations Pacific Gas 5 Elect ic Company 1726 M Street, N.W.
Suite 1100 Washington, DC 20036-4502 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Michael J.
Strumwasser, Esq.
Special Counsel to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles, California 90010 Mr. Tom Harris Sacramento Bee 21st and 0 Streets Sacramento, Cal ifornia 95814 Mr. H. Daniel Nix California Energy Commission 1516 9th Street, MS 18 Sacramento, Cali fornia 95814 Lewis Shollenberger, Esq.
US Nuclear Regulatory Coranission Region V
1450 Maria Lane Suite 210 Walnut Creek, California 94596 Mr. Thomas Devine Government Accountability Project Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009
0
Pacific Gas 5 Electric Company 'iablo Canyon CC'hairman San Luis Obispo County Board of Supervisors Room 220 County Courthouse Annex San Luis Obispo, California 93401 Director Energy Facilities Siting Division Energy Resources Conservation and Development Commission 1516 9th Street Sacramento, California 95814 President California Public Utilities Comnission California State Building 350 McAllester Street San Francisco, California 94102 Mr. Joseph
- 0. Ward, Chief Radiological Health Branch State Department of Heal th Services 714 P Street, Office Building 88 Sacramento, California 95814
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Enclosure 1
Meeting Notice Table 1:
List of Attendess DCRDR Meeting Table 2:
List of. Attendees
- Snubber Meeting Table 3:
List of Attendees-Table 4:
List of Attendees-Rerack Meeting Reactor Trip Experience Meeting
l 4