IR 05000275/2007001

Annual Assessment Letter - Diablo Canyon Power Plant (NRC Inspection Report 05000275-07-001 and 05000323-07-001)

ML070610597
Person / Time
Site:	Diablo Canyon
Issue date:	03/02/2007
From:	Vincent Gaddy NRC/RGN-IV/DRP/RPB-B
To:	Keenan J S Pacific Gas & Electric Co
References
IR-07-001
Download: ML070610597 (9)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION REGION IV 611 RYAN PLAZA DRIVE, SUITE 400 ARLINGTON, TEXAS 76011-4005 March 2, 2007 John Senior Vice President - Generation Pacific Gas and Electric Company P.O. Box 770000 Mail Code B32 San Francisco, CA 941 77-0001 and Chief Nuclear Officer

SUBJECT: ANNUAL ASSESSMENT LETTER - DIABLO CANYON POWER PLANT (NRC INSPECTION REPORT 05000275/2007001 and 05000323/2007001)

Dear Mr. Keenan:

On February 8, 2007, the NRC staff completed its performance review of Diablo Canyon Power Plant, Units 1 and 2. Our technical staff reviewed performance indicators for the most recent quarter and inspection results for the period from January 1 through December 31, 2006.

The purpose of this letter is to inform you of our assessment of your safety performance during this period and our plans for future inspections at your facility. This performance review and enclosed inspection plan do not include physical protection information. A separate letter designated and marked as "Official Use Only - Security-Related Information" will include the physical protection review and resultant inspection plan.

Overall, Diablo Canyon Power Plant, Units 1 and 2, operated in a manner that preserved public health and safety and fully met all cornerstone objectives.

Plant performance for the most recent quarter, as well as for the first three quarters of the assessment cycle, was within the Licensee Response column of the NRC's Action Matrix, based on all inspection findings being classified as having very low safety significance (Green)

and all performance indicators indicating performance at a level requiring no additional NRC oversight (Green). Therefore, we plan to conduct reactor oversight process baseline inspections at your facility.

The NRC staff identified that there were more than three Green inspection findings for the current 12-month assessment period with documented crosscutting aspects in the human performance area. There is a crosscutting theme associated with these findings involving the adequacy of design documentation and procedures.

In evaluating the scope of efforts and progress in addressing the crosscutting theme, we determined that your staff previously recognized this theme and are continuing to implement effective actions to address it. In March 2005, your staff initiated a comprehensive 5-year plan to improve the quality of plant procedures. Most of the findings identified during this assessment period were associated with procedures that had not been enhanced as part of this long-term improvement initiative. In addition to the procedure upgrade program, your staff initiated an apparent cause evaluation of Pacific Gas and Electric Company

-2- the most recent findings.

At this time, we have determined that your current and planned corrective actions are effective in mitigating this crosscutting theme. Therefore, the NRC staff has concluded that a substantive crosscutting issue in human performance does not exist at this time. The enclosed inspection plan details the inspections, except those related to physical protection, scheduled through September 30, 2008.

In addition to the baseline inspections, the NRC will also be conducting inspections related to Temporary Instruction 251 5/166, "Pressurized Water Reactor Containment Sump Blockage," for Units 1 and 2. The inspection plan is provided to allow for the resolution of any scheduling conflicts and personnel availability issues well in advance of inspector arrival onsite. Routine resident inspections are not listed due to their ongoing and continuous nature. The inspections in the last 9 months of the inspection plan are tentative and may be revised at the midcycle review. In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure will be made 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/readina-rm/adams. html (the Public Electronic Reading Room).

If circumstances arise which cause us to change this inspection plan, we will contact you to discuss the change as soon as possible..

Please contact me at 817-860-8141 with any questions you may have regarding this letter or the inspection plan.

Sincerely,Vincent G. Gaddy, Chief1 Project Branch B Division of Reactor Projects Dockets: 50-275 Licenses:

DPR-80 50-323 DPR-82

Enclosure:

Diablo Canyon Inspection/Activity Plan cc wlenclosure: Donna Jacobs Vice President, Nuclear Services Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 Pacific Gas and Electric Company

-3- James R. Becker, Vice President Diablo Canyon Operations and Station Director, Pacific Gas and Electric Company Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 Sierra Club San Lucia Chapter ATTN: Andrew Christie P.O. Box 15755 San Luis Obispo, CA 93406 Nancy Culver San Luis Obispo Mothers for Peace P.O. Box 164 Pismo Beach, CA 93448 Chairman San Luis Obispo County Board of County Government Building 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Supervisors Truman Burns\Robert Kinosian California Public Utilities Commission 505 Van Ness Ave., Rm. 4102 San Francisco, CA 941 02-3298 Diablo Canyon Independent Safety Committee Robert R. Wellington, Esq.

Legal Counsel 857 Cass Street, Suite D Monterey, CA 93940 Director, Radiological Health Branch State Department of Health Services P.O. Box 997414 (MS 7610) Sacramento, CA 95899-7414 Antonio Fernandez, Esq. Pacific Gas and Electric Company P.O. Box 7442 San Francisco, CA 94120 City Editor The Tribune 3825 South Higuera Street P.O. Box 112 San Luis Obispo, CA 93406-01 12 James D. Boyd, Commissioner California Energy Commission 1516 Ninth Street (MS 34) Sacramento, CA 95814 Jennifer Tang Field Representative United States Senator Barbara Boxer 1700 Montgomery Street, Suite 240 San Francisco, CA 94111 Chief, Radiological Emergency Oakland Field Office Chemical and Nuclear Preparedness Department of Homeland Security 11 11 Broadway, Suite 1200 Oakland, CA 94607-4052 Preparedness Section and Protection Division Federal Em erg en cy Manage men t Agency Region IX Nancy Ward, Regional Director 11 11 Broadway Suite 1200 Oakland, CA 94607 The Honorable Tony Ferrara Mayor, City of Arroyo Grande P.O. Box 550 Arroyo Grande, CA 93421 The Honorable Stephen Lieberman Mayor, City of Grover Beach 154 S. 8th Street Grover Beach, CA 93433 The Honorable Janice Peters Mayor, City of Morro Bay 595 Harbor Street Morro Bay, CA 93442 Pacific Gas and Electric Company

-4- The Honorable Dave Romero Mayor, City of San Luis Obispo 990 Palm Street San Luis Obispo, CA 93401 The Honorable Mary Ann Reiss Mayor, City of Pismo Beach 760 Mattie Road Pismo Beach, CA 93449 David Edge, County Administrative Officer San Luis Obispo County Board of 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Supervisors Harry Ovitt, Supervisor District One San Luis Obispo County Board of 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Supervisors Bruce Gibson, Supervisor District Two San Luis Obispo County Board of 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Supervisors Jerry Lenthall, Supervisor District Three San Luis Obispo County Board of 1055 Monterey Street, Suite 0430 San Luis Obispo, CA 93408 Supervisors Khatchik Achadjian, Supervisor District Four San Luis Obispo County Board of 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Supervisors Institute of Nuclear Power Operations (INPO) Records Center 700 Galleria Parkway SE, Suite 100 Atlanta, GA 30339 James Patterson, Supervisor District Five San Luis Obispo County Board of 1055 Monterey Street, Suite D430 San Luis Obispo, CA 93408 Supervisors a, Ll m 0 a - .- - 2 c 0 z a, Ll m 0 a - ._ - 2 e 0 z 0 c 0 0 a, 0. m c a, c a, m ld ._ c - ._ - m 66 6 666 66 0 -33 22 98 8 000 00 00 0 000 00 FNN q.j $=I$ -- ??e N? ?? (D 333 ss si2 z 000 00 Giz bb b bbb bb 00 0 000 00 00 0 000 00 $$$ 0) c 0 0 a, 0. m c a, c a, m m ._ c - .- - m 0) c 0 0 a, Q m c a, c a, m m ._ c - ._ - m m a, 3 m m x a, m ffl - c c m c 0 0 a, Q m C a, K a, m m .- Y - ._ - m d (Ul- 7 7 2 E 0 0 N LT 9 0 a: W z W 0 2 zl a, m m aciaa a c 0 .- c ._ d c a, > L z c .- d U c a, 0 c m - E 't a, a 7 LD b 7 7 a r 0 0 0. ffl C a, - m 5 .- E c ld C 0 0 0 0 m a, a: a, c L c L c z U a, N 3 m m .- L 2? a (D (D 7- . ? a In N - I-bbb 0000 0000 NNNN ggzg i=i=i=i= 0000 bbbb 0000 0000 CUNNN 0000 0000 &&&& i=si=s T-7-77 mmmm CCCC 0000 a,a,a,a, aaaa mmmm CCCC a,a,a,a, a,a,a,a, mmmm mldmm g .g .o .Q cc ---- .E .r .r .c mmmm ____ bbbb 0000 0000 ??!"a ma&& eeee m C 0 0 a, a m K a, c a, m m ._ c - ._ - m b 0 0 m N ?? 7- . 7 b 0 0 c! : 7 rJ rn l- rr m C c ._ E b I2 z ; 6 a i c m i m a, C m c 0 C 0 m 3 W ._ c - 9 N 0 7 T- v- 7 b CL - m c 0 ._ e .- d 2 L U c K m - a c c a, c m a m k 7 7 T- 7 I- a - rn 0 0 Ei I- z P I- z W z U Ei W P d 0.3 v) 5 a 2 I E z \ 9 W m C c .- E b I2 F a L 0 i c m i a, m c m C o 0 c 0 m 3 m > W c .- c - N 0 7 7 T- 7 b a I m - aciaaa a c 0 .- c .- d L a, > L z c .- d U c a, 0 c m - E 't a, a 7 LD b 7 7- a coma 000 000 e???? -7- ... 7T-V 233 mmm Si=& Bee 000 000 000 NNN *';re 000 I m adaa a r L" ?? I- 6 m C 0 0 a, a rn C a, C .- c - .- - % m a c! c! m 0 0 In I- 0 a 2 c! 0 0 Y-. I- O -.;r I I m b 0 l- rnm CC 00 ala, an rnm cc ma, CC ma, mm mm .s .g -- ._ ._ -- mm cow 00 00 $% 22 00 ma c!c! cc! am 00 00 l-Ln 00 r d rn C 0 0 al a m C a, c a, m m ._ c - ._ - m a 2 0 0 m 0 0 . l- a a 9 0 0 cu . 0) 0 C 0 0 a, a m c m a, m m C rn a, C a, C 0 a .- c - m m ._ n c L 0 m C 0 0 a, a m c .- c - m C 0 0 a, a m c .- c - a, m 0 a - n .- - 2 Y 0 Z a, c a, 0 m ._ - m a, c a, m m ._ - m b 0 0 (D N 0 b 0 0 ?! 7 . s T- . N 0 b 0 0 m N m 0 b 0 0 N c! . . T- . m m 0 6 ?! 9 0 . b 0 co cocoa c! 222 9 zzz 2 223 0 000 0 000 0 000 co comm ?!!CuN rk b?? 2 222 0 000 0 000 0 000 0 000 T- .... T--7-7 (u r rr ." ? rk 0 0 N B z I 0 \ h b 0 Lo m . . v b 0 m . s? v 3 W I a 3 1 4 k z L 0 b m m c F N N k Z 3 k Z 3 m a, C m m 5 Z 0 >. Z 0 a Z Z 0 9 a + 0 c 0 3 m a n - 0) Q) m m 2 2 n W I O 0 c3 0 d Lo 0 d N 0 T- 7 T- 7 b a m b N 0 7 b N m 01 a In I- I- O cu ?? 7 T- 7 b T- 7 b a T- 7 b a cv W n a z m C 0 0 a, R m C a, C a, m m ._ + - .- - m m 0 0 N In b 0 . c! m c! c! 0 0 T- b 0 mm CC 00 ma, RQ mm CC ala, CC ma, mm ma .P .P c+ -- .- .- -- mm mm 00 00 2% s$ 00 mm 99 00 00 -In s$ 00 0 C 0 0 a, R m C a, C a, m m ._ + - .- - m m 0 0 N m . B z m m B 0 0 N . 0) 0 C 0 0 a, R (0 C m a, .- c - 3 m C 0 m a, ._ n 4- C a, C 0 R 6 0 N " N Pacific Gas and Electric Company -5- VGGaddy;df IRA1 2/22/07 Electronic distribution by RIV: Regional Administrator (BSMI) DRP Director (ATH) DRS Director (DDC) DRS Deputy Director (RJCI) Senior Resident Inspector (TWJ) Branch Chief, DRPIB (VGG) Senior Project Engineer, DRPIE (FLB2) Team Leader, DRPITSS (FLB2) RlTS Coordinator (MSHS) V. Dricks, PA0 (VLD) W. Maier, RSLO (WAM) L. Owen, RA Secretary (LAO) DRS Branch Chiefs (WBJ, ATG, LJS, MPSI) C. Miller, Chief, TRPS, OED0 (CGM) S. Richards, Deputy Director, DIRS, NRR (SAR) J. Lubinski, Deputy Director, DORL, NRR (JWL) C. Haney, Director, DORL, NRR (CXH) D. Terao, Chief, PLB IV, DORL, NRR (DXT) A. Wang, NRR Project Manager for DC (ABW) RidsNrrDirslpab@nrc.gov ROPreports@nrc.gov DDCham berlain ATHowell Ill VGGaddy 21 I07 2/24/07 31 I07 /RAI SUNS1 Review Completed:

ADAMS: OYes 0 No Initials:

0 Publicly Available 0 Non-Publicly Available 0 Sensitive 0 Non-Sensitive