ML101760104

Request for Additional Information Related to the Review of the Diablo Canyon Nuclear Power Plant, Units 1 and 2, License Renewal Application

ML101760104
Person / Time
Site:	Diablo Canyon
Issue date:	07/06/2010
From:	Ferrer N License Renewal Projects Branch 2
To:	Conway J Pacific Gas & Electric Co
Ferrer, N B, NRR/DLR, 415-1045
References
TAC ME2896, TAC ME2897
Download: ML101760104 (8)

Text

July 6, 2010 Mr. John Conway Senior Vice President Generation and Chief Nuclear Officer Pacific Gas and Electric Company 77 Beale Street, MC B32 San Francisco, CA 94105

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE REVIEW OF THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NOS. ME2896 AND ME2897) - FIRE PROTECTION

Dear Mr. Conway:

By letter dated November 23, 2009, Pacific Gas & Electric Company (PG&E) submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54, to renew the Operating Licenses for Diablo Canyon Nuclear Power Plant, Units 1 and 2, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review.

The request for additional information was discussed with Mr. Terry Grebel, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-1045 or by e-mail at nathaniel.ferrer@nrc.gov.

Sincerely,

/RA/

Nathaniel Ferrer, Safety Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-275 and 50-323

Enclosure:

Request for Additional Information cc w/encl: See next page

ML101760104 OFFICE PM:RPB2:DLR LA:DLR BC:RPB2:DLR PM:RPB2:DLR NAME NFerrer (KGreen for) SFigueroa DWrona NFerrer DATE 06/29/10 06/29/10 07/06/10 07/06/10

Diablo Canyon Nuclear Power Plant, Units 1 and 2 License Renewal Application Request for Additional Information Set 7 Fire Protection RAI 2.3.3.12-1 License renewal boundary drawing LR-DCPP-18-106718-02 shows several fire water suppression systems associated with various transformers (e.g., main, auxiliary, and standby/startup transformers) as not within the scope of license renewal (i.e., not highlighted in green). Section 9.6.1 on page 9-8 of NUREG-0675, Supplement 8, Safety Evaluation Report Related to the Operation of Diablo Canyon Nuclear Power Plant, Units 1 and 2, dated November 15, 1978, states that: Special protection water system are provided for the fire hazards which exist in the areas around the plant. Examples of these are dry pipe deluge spray system for main transformers, auxiliary transformers. The staff requests that the applicant verify that the fire water suppression systems associated with various transformers are in the scope of license renewal in accordance with 10 CFR 54.4(a) and subject to an aging management review (AMR) in accordance with 10 CFR 54.21(a)(1). If they are excluded from the scope of license renewal and not subject to an AMR, the staff requests that the applicant provide justification for the exclusion.

RAI 2.3.3.12-2 License renewal boundary drawing LR-DCPP-18-106718-03 shows a jockey pump and its associated components as not within the scope of license renewal (i.e., not highlighted in green). The jockey pump and its associated components appear to have fire protection intended functions required for compliance with 10 CFR 50.48 as stated in 10 CFR 54.4. The staff requests that the applicant verify that the jockey pump and its associated components are in the scope of license renewal in accordance with 10 CFR 54.4(a) and subject to an AMR in accordance with 10 CFR 54.21(a)(1). If they are excluded from the scope of license renewal and not subject to an AMR, the staff requests that the applicant provide justification for the exclusion.

RAI 2.3.3.12-3 The following license renewal boundary drawings show the following fire protection systems/components as not within the scope of license renewal (i.e., not highlighted in green):

LRA Drawing Systems/Components Location LR-DCPP-18-106718-07 Fire protection piping, valves, hose connections, Units 1 and 2 and drains Containment Structure LR-DCPP-18-106718-08 Fire water drains Unit 1 Turbine Building ENCLOSURE

LR-DCPP-18-106718-09 Fire water drains Unit 2 Turbine Building LR-DCPP-18-106718-11 A portion of the carbon dioxide (CO2) fire A114 and B115 suppression system LR-DCPP-18-106718-16 Fire hose connections FW-3-11-1, FW-3-12-1, Intake Structure FW-3-13-2, and FW-3-14-2 The components listed above appear to have fire protection intended functions required for compliance with 10 CFR 50.48 as stated in 10 CFR 54.4. The staff requests that the applicant verify whether the fire protection systems/components listed above are within the scope of license renewal in accordance with 10 CFR 54.4(a) and whether they are subject to an AMR in accordance with 10 CFR 54.21(a)(1). If they are excluded from the scope of license renewal and are not subject to an AMR, the staff requests that the applicant provide justification for the exclusion.

RAI 2.3.3.12-4 License renewal boundary drawing LR-DCPP-18-106718-12 shows Units 1 and 2 CO2 fire hose reels highlighted as within the scope of license renewal for the following areas:

• Vital 4 kV Bus F, Elevation 119

• Exciter Field Breaker Room, Elevation 119

• ISO Phase Bus Room, Elevation 107

• 4kV Vital Cable Spreading Room, Elevation 107

• 4 & 12 kV Switchgear Room, Elevation 85 However, Final Safety Analysis Report, Section 2.5.1.2.6.1, Low Pressure CO2, states that manually initiated low-pressure CO2 hose reels of 100 foot length are provided only for the following areas:

• 12 kV Switchgear Rooms

• 4.16 kV Switchgear Rooms

• 4.16 kV Cable Spreading Rooms

• 25 kV Potential Transformer Area

• 480 V Switchgear Room

• 125 Vdc Battery and Inverter Rooms

• Electric Load Center Room The staff requests that the applicant clarify this discrepancy.

RAI 2.4-1 Section 2.4 of the LRA does not include the following fire barrier and other fire protection components:

• Table 2.4-1, fire barrier seals

• Table 2.4-3, fire barrier coatings and wraps

• Table 2.4-7, fire barrier coatings

• Table 2.4-8, fire barrier coatings

• Table 2.4-9, fire barrier coatings

• Table 2.4-10, fire barrier seals and fire barrier coatings The fire barrier components listed above appear to have fire protection intended functions required for compliance with 10 CFR 50.48 as stated in 10 CFR 54.4. The staff requests that the applicant verify whether the above fire barrier assemblies and fire protection components are within the scope of license renewal within the identified structure accordance with 10 CFR 54.4(a) and subject to an AMR in accordance with 10 CFR 54.21(a)(1). If they are excluded from the scope of license renewal and not subject to an AMR, the staff requests that the applicant provide justification for the exclusion.

Letter to J. Conway from N. Ferrer dated July 6, 2010

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE REVIEW OF THE DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NOS. ME2896 AND ME2897) - FIRE PROTECTION DISTRIBUTION:

HARD COPY:

DLR RF E-MAIL:

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NFerrer KGreen AStuyvenberg DWrona AWang MPeck, RIV TBrown, RI GMiller, RIV NOKeefe, RIV ICouret, OPA VDricks, OPA WMaier, RIV JWeil, OCA EWilliamson, OGC SUttal, OGC RRihm, EDO

Diablo Canyon Nuclear Power Plant, Units 1 and 2 cc:

Chairman Regional Administrator, Region IV San Luis Obispo County Board of U.S. Nuclear Regulatory Commission Supervisors Texas Health Resources Tower 1055 Monterey Street, Suite D430 612 East Lamar Boulevard, Suite 400 Room 370, County Government Center Arlington, TX 76011-4125 San Luis Obispo, CA 93408 Mr. Terence L. Grebel Mr. James R. Becker, Site Vice President Manager, Regulatory Projects Pacific Gas & Electric Company Diablo Canyon Nuclear Power Plant Diablo Canyon Nuclear Power Plant P.O. Box 56 P.O. Box 3, Mail Station 104/6/601 Avila Beach, CA 93424 Avila Beach, CA 93424 Mr. Truman Burns Ms. Jennifer Post, Esq. Mr. Robert Kinosian Pacific Gas & Electric Company California Public Utilities Commission 77 Beale Street, Room 2496 505 Van Ness, Room 4102 Mail Code B30A San Francisco, CA 94102 San Francisco, CA 94120 Mr. James D. Boyd, Commissioner Mr. Gary W. Butner, Chief California Energy Commission Radiological Health Branch 1516 Ninth Street (MS 31)

Division of Food, Drug & Radiation Sacramento, CA 95814 Safety California Department of Public Health Mr. Brian Hembacher P.O. Box 997414, MS-7610 Deputy Attorney General Sacramento, CA 95899-7414 300 South Spring Street, Suite 1702 Los Angeles, CA 90013 Mr. Tony Brown NRC Resident Inspector Ms. Susan Durbin Diablo Canyon Nuclear Power Plant 1300 I Street c/o U.S. Nuclear Regulatory Commission P.O. Box 944255 P.O. Box 369 Sacramento, CA 94244-2550 Avila Beach, CA 93424 Mr. Tom Luster Mr. Michael Peck CA Coastal Commission NRC Senior Resident Inspector 45 Freemont Street, #2000 Diablo Canyon Nuclear Power Plant San Francisco, CA 94105 c/o U.S. Nuclear Regulatory Commission P.O. Box 369 Mr. Mark Johnsson Avila Beach, CA 93424 CA Coastal Commission 45 Freemont Street, #2000 San Francisco, CA 94105

Diablo Canyon Nuclear Power Plant, Units 1 and 2 cc:

Mr. Eric Green Mr. John G. Parrish, PhD 505 Van Ness Avenue State Geologist San Francisco, CA 94102-3214 California Geological Survey 801 K Street, Suite 1200 Ms. Barbara Byron Sacramento, CA 95814 Senior Policy Advisor California Energy Commission Lieutenant Jim Epperson 1516 9th Street, MS 36 California Highway Patrol Sacramento, CA 95814 Commercial Vehicle Section 601B North 7th Street Mr. Kevin Bell Sacramento, CA 95811 General Council California Energy Commission Mr. Peter Von Lagen, PhD, PG 1516 9th Street, MS 36 895 Areovista Place, Suite 101 Sacramento, CA 95814 San Luis Obispo, CA 93401 Ms. Rachel MacDonald Mr. Burton Chadwick, PhD, PG Nuclear Policy Advisor Core Regulatory Permitting California Energy Commission Central Coast Water Board 1516 9th Street, MS 36 895 Areovista Place, Suite 101 Sacramento, CA 95814 San Luis Obispo, CA 93401 Mr. Bill Potter Ms. Jane Swanson Senior Emergency Services Coordinator San Luis Obispo Mothers for Peace California Emergency Management Agency P.O. Box 3608 Radiological Preparedness Unit San Luis Obispo, CA 93403 3650 Schriever Avenue Mather, CA 95655 Ms. Rochelle Becker, Executive Director Alliance for Nuclear Responsibility Mr. Michael Warren P.O. Box 1328 California Emergency Management Agency San Luis Obispo, CA 93406-1328 Radiological Preparedness Unit 3650 Schriever Avenue Diablo Canyon Independent Safety Mather, CA 95655 Committee Office of the Legal Counsel Mr. Chris Wills 857 Cass Street, Suite D Supervising Geologist Monterey, CA 93940 California Geological Survey 801 K Street, MS 12-32 Sacramento, CA 95814-3531