ML16342D493
| ML16342D493 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 12/12/1996 |
| From: | Steven Bloom NRC (Affiliation Not Assigned) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| References | |
| TAC-M92632, TAC-M92633, NUDOCS 9612160313 | |
| Download: ML16342D493 (8) | |
Text
Og R RE0 P
~c I
0O I
3 I1 3
0 Cy P+
~O
+w*e+
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20$554001 December 12, 1996 Mr. Gregory M. Rueger Pacific Gas and Electric Company NPG - Mail Code A10D P. 0.
Box 770000 San Francisco, California 94177
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REVIEW OF DIABLO CANYON ENGINEERING CALCULATION FOR EMERGENCY LIGHTING AND COMMUNICATIONS (TAC NOS.
M92632 AND M92633)
Dear Hr. Rueger:
By letters dated March 15,
- 1994, and May 25, 1994, Pacific Gas and Electric Company (PG&E) requested an exemption from the technical requirements of Section III.J of Appendix R to Part 50 of Title 10 of the Code of Federal
~di 1
1 th tihl t 1
N 1
P Pl tP1 t,ditN.1 d
2.
Section III.J of Appendix R to 10 CFR Part 50 requires that emergency lighting units with at least 8-hour battery power supply be provided for the access and egress routes to all areas needed for the operation of safe shutdown equipment.
The licensee requested approval to use procedurally-controlled hand-held portable lights (flashlights) rather than fixed emergency lights for certain access and egress routes.
The staff treated the exemption request as a deviation from the licensee's commitment to meet Section III.J of Appendix R.
The exemption request is hereafter referred to as a "deviation request."
By letter dated May 5, 1995, the staff provided its safety evaluation.
On June 23,
- 1995, PG&E submitted Calculation No. 335-DC, Revision 2, "10 CFR Part 50, Appendix R Emergency Lighting and Communications."
The staff has reviewed the calculation and subsequent revisions of the calculation submitted on January ll, 1996 (Rev.
3) and May 24, 1996 (Rev. 4).
PG&E also submitted, at the staff's request, Appendix A of Calculation H-928, "Evaluation of Operator Access/Egress in Affected Fire Area" and Calculation M-944, "10 CFR 50 Appendix R, Alternate Shutdown Methodology - Time and Manpower Study/Safe Shutdown System Considerations."
These two calculations had also been revised and were referenced in Calculation No. 335-DC.
Page A-I of Appendix A to Calculation M-928 states "The availability of emergency lights is not guaranteed during transit into the area....Nevertheless, flashlights will be available for operators to use when performing the actions."
These statements are contrary to the licensee's commitment to meet Section III.J of Appendix R to 10 CFR Part 50 and the technical concerns documented in the aforementioned safety evaluation.
Therefore, clarification is needed as to what actions PG&E has taken in response to the denial of their deviation request dated March 15,
- 1994, and
'Phi2ih03i3 9hi2i2 PDR ADOCK 05000275 p'DR
Mr. Gregory M. Rueger December 12, 1996 May 25,
- 1994, and the measures taken to comply with Section III.J of Appendix R to 10 CFR Part 50.
Our request for additional information is enclosed.
Please submit your response within 60 days of receipt of this letter.
H Sincerely, h
Original Signed By Steven D. Bloom, Project Manager
,'" Project Directorate IV-2, Division'f. Reactor~Projects.-III/IV
,Office 'of, Nuclear, Reactor Regulation Docket Nos.
50-275 DISTR I BUTION:
and 50-323
-'<<Docket."' i.le'3
~.PUBLIC(
Enclosure:
Request for Additional
'PDIV-'2 Reading, Information
',,""JRoe '
cc w/encl:
See next page
'">'~, WBatem'an,,
5.ACRS 4,.0GC
~,
~ ", ',')"
.'JDyer, RIV
- HWong, RIV/WCFO ASingh DOCUMENT NAME:
DC92632.RAI OFC NAME DATE PDIV-2 LA PDI 2/LA Eey n
12 I
/96 S
om.ye 12/t~6 OFFICIAL RECORD COPY
4 L',
lg P'f
,l r
l,
'0,
~g l
I I
4 tl Xl
'I A
F -,) W,l
/)
1 r,,
I.../:
F
,-4 tf C<> j I'
( ~
I fg
( f Hr. Gregory H. Rueger December 12, 1996 cc w/encl:
NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0. Box 369 Avila Beach, California 93424 Dr. Richard Ferguson, Energy Chair Sierra Club California 1100 11th Street, Suite 311 Sacramento, California 95814 Hs. Nancy Culver San Luis Obispo Nothers for Peace P. 0. Box 164 Pismo Beach, California 93448 Chairman San Luis Obispo County Board of Supervisors Room 370 County Government Center San Luis Obispo, California 93408 Hr. Truman Burns Hr. Robert Kinosian California Public Utilities Commission 505 Van Ness, Room 4102 San Francisco, California 94102 Hr. Steve Hsu Radiologic Health Branch State Department of Health Services Post Office Box 942732 Sacramento, California 94232 Diablo Canyon Independent Safety Coaeittee ATTN:
Robert R. Mellington, Esq.
Legal Counsel 857 Cass Street, Suite D
Honterey, California 93940 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower 5 Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Christopher J. Marner, Esq.
Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Hr. Robert P.
Powers Vice President and Plant Manager Diablo Canyon Nuclear Power Plant P. 0.
Box 56 Avila Beach, California 93424
ENCLOSURE RE UEST FOR ADDITIONAL INFORMATION PACIFIC GAS AND ELECTRIC COMPANY IABLO CANYON POWER PLANT U IT NOS.
1 AND 2 DOCKET NOS.
50-275 AND 50-323 Please provide the following information:
Describe the specific actions that have been taken to resolve the emergency lighting issues discussed in the NRC safety evaluation for Diablo Canyon Power Plant, Units 1 and 2, dated May 5, 1995.
2.
Confirm that emergency lighting units with at least 8-hour battery power supply have been provided for Diablo Canyon Power Plant, Units 1 and 2
in all areas needed for operation of safe shutdown equipment and in access and egress routes thereto.
f r
1~
~ I