ML16341D244
| ML16341D244 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 04/19/1985 |
| From: | Schierling H Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8505020403 | |
| Download: ML16341D244 (14) | |
Text
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ly kg**4 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 APR 1 9 >985 LICENSEE:
Pacific Gas and Electric FACILITY:
Diablo Canyon Nuclear Power Plant
SUBJECT:
DIABLO CANYON UNIT 2 -
NRC PLANT TOUR ON APRIL 10, 1985 On April 10,
- 1985, NRC management and staff (see attachment) toured Diablo Canyon Unit 2 to observe and be briefed by PG&E on the overall plant construction status.
The tour began at 9:00 a.m.
and was conducted by PG&E staff and NRC Resident Inspectors.
It included the Unit 2 control room, containment and turbine buildings.
In the control room the staff was briefed on the operation of the safety para-meter display system (SPDS) and post-accident monitoring (PAN) panels.
It was noted that the containment hydrogen concentration is displayed and recorded on a
PAN panel.
PG&E identified modifications in the Unit 2 control room made as a result of the Unit 1 design verification effort (Unit 1 and 2 share a
common control room).
It included the same type of additional structural bracing as on the Unit 1 cabinets and the relocation of the display typewriter to account for the floor response spectrum with respect to the seismic qualification of the typewriter.
The staff briefly discussed with the shift senior control operator the procedures and status of the Unit 1 integrated leak rate test
( ILRT) which was in progress at the time.
Inside the containment, Cardinal fasteners*
were identified on pipe supports, rupture restraints and a steam generator snubber.
(Note:
bolts on the steam generator snubbers in Unit 1 and Unit 2 are of the same type; however, Cardinal bolts are used in Unit 1, not in Unit 2).
Structural modifications resultinp from the Unit 1 design verification effort were identified, such as plates to stiffen the frame of the polar crane, hold down devices and guides for the crane wheels, gusset plates at column/beam connections in the annulus steel structure, and columns that were added to stiffen the structure.
The method-ology and modifications to stiffen the Unit 1 annulus structure were also applied to Unit 2.
However, in Unit 2 more columns and fewer tangential beams
- ar dna pro ucts are t e su Ject o
a current eva uatson regar sng documentation of gA records and potential need for replacement.
In addition, the Vendor Program Branch
( IE) is pursuing this matter.
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were used in comoarison to Unit I because of space availability, simplicity, and effectiveness.
The staff alsn noted the ongoing installation of incore thermocouples and the thermocouple junction box which recently had been qualified.
In the turbine building the staff noted the stiffeninq of the crane rail support columns by means of plates welded to the columns.
These modifications had been made at the same time they were made for Unit 1.
PG&E identified the concrete slab in the vicinity of the elevator which is currently being reanalyzed by PG&E with respect to the transfer of shear forces as stated in SSER 29.
From the 140 foot elevation the staff also noted the pipe way structure at the containment building which supports the main steam and feedwater lines. This structure is being further analyzed as stated in SSER 29.
Throughout the plant tour, Appendix R fire protection modifications were identified which had been completed or were in the process of completion.
Following the plant tour, PG&E briefed the staff on the program and status of activities during the current Unit 1 outage.
They include the integrated leak rate test (in progress),
completion of installation of Regulatory Guide 1.97 equipment, and the cleaning or replacement of strainers in fluid systems.
The outage is expected to be completed by late April 1985, at which time Unit 1
will be ready for commercial operation.
The staff observed a shift crew in training at the simulator (operational since August 1984),
and witnessed the crew respond to an incident scenario, not identified prior to the drill. It started with a control rod drop followed by a total loss of offsite power and a stuck open PORV.
At the exit meeting the staff stated that, based on its observations, Unit 2 appears to be in a more advanced state of completion and readiness with respect to fuel load and ooeration than other facilities at the same time in their schedule.
The staff commented on the effective actions by the shift crew during the successful simulator drill.
The staffing for simultaneous Unit I and Unit 2 operation was discussed briefly.
PG&E stated that various activities had to be completed prior to fuel load, such as pipe hanger and Appendix R
modifications, and DCNs (design change notices) for electrical and mechanical components/systems.
PG&E stated that Unit 2 will be ready for fuel load during the week of April 22, 1985.
The staff requested PG&E to, be prepared to address all issues pertaining to the construction, operation and licensing of Diablo Canyon Unit 2 at a meeting on April 19, 1985, in Sethesda, Maryland.
1 The plant tour ended at approximately 4:00 p.m.
Enclosure:
As stated cc:
See next page Hans Schierling, Project Manager Licensing Branch No.
3 Division of Licensing DISTRIBUTION
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NRC Diablo Canyon, Unit 2 Plant Tour Wednesday, April 10, 1985 ATTENDEES NRC D. Eisenhut, Deputy Director, NRR C. Grimes, Branch Chief H. Schierling, Proiect,Manager, Diablo Canyon D. Kirsch, Director,
- RSP, Region V
M. Ley, Project Manager M. Padovan, Resident Inspector L. Crocker, Section
- Leader, LgB/OHFS PGSE/RECHTEL G. Maneatis J. Shiffer B. Thornberry H. Friend R. Lieber M. Norem D. Rockwell G. Moore G. Cranston B.
Lew J.
Sexton J. Gisclon W. Wogsland R.
Oman Executive Vice President, Facilities and Electric Resources Development Vice President, Nuclear Power Generation Plant Manager Project Completion Manager Project Construction Manager Resident Startup Engineer Unit 2 Construction Supervisor Unit 1 Proiect Engineer Unit 2 Project Engineer Project Licensing Supervisor Operations Manager Assistant Plant Manager, Technical Services Senior Nuclear Generation Engineer Assistant Project Engineer
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Mr. J.
D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, Ca 1 iforni a 94106 Philip A. Crane, Jr.,
Esq.
Pacific Gas
& Electric Company Post Office Box 7442 San Francisco, California 94120 Mr. Malcolm H. Furbush Vice President - General Counsel Pacific Gas
& 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 Mr. Gordon A. Silver Ms. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Harry M. Willis, Eso.
Seymour
& 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 Diablo Canyon Resident Inspector/Diablo Canvon NPS c/o US Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 Ms.
Rave Fleming 1920 Mattie Road Shell Beach, California 93440 Joel
- Reynolds, Esq.
)ohn R. Phillips, Esa.
Center for Law in the Public Interest 10951 West Pico Boulevard Third Floor Los Angeles, California 90064 Mr. Dick Blankenburg Editnr,& Co-Publisher South County Publishing Company P. 0.
Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.
- Norton, But ke, Berry
& 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 25230 David F. Fleischaker, Esq.
P. 0.
Box 1178 Oklahoma City, Oklahoma 73101
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Arthur C. Gehr, Esq.
Snell 5 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Mr. Lee M. Gustafson, Director Federal Agency Relations Pacific Gas 8 Electric Company 1050 17th Street, N.W.
Suite 1180 Washington, DC 20036 Regional Administrator - Region V
US 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 Anqeles, California 90010 Mr. Tom Harris Sacramento Bee 21st and 0 Streets Sacramento, California 95814 Mr. M. Daniel Nix California Energy Commission 1516 9th Street, MS 18 Sacramento, California 95814 Lewis Shollenberger, Esq.
US Nuclear Regulatory Commission Region V
1450 Maria Lane Suite 210 Walnut Creek, California 94596 Mr. Thomas Devine Government Accountability Pro.iect Institute for Policy Studies 1901 gue Street, NW Washinaton, DC
?0009
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MEETING
SUMMARY
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