ML12111A276

GE Hitachi Nuclear Energy, Annual Report for Vbwr, 2011, No. 47

ML12111A276
Person / Time
Site:	Vallecitos Nuclear Center
Issue date:	03/30/2012
From:	Mcfadden A GE-Hitachi Nuclear Energy Americas
To:	Document Control Desk, NRC/FSME
References
AES-2012-03-02
Download: ML12111A276 (5)

Text

GE Hitachi Nuclear Energy Anthony E. McFadden Manager, Vallecitos Nuclear Center 0HITACHI 6705 Vallecitos Road Sunol, CA 94586-9524 USA T +1 925 862 4344 M+1815 953 8211 anthony.mcfadden@ge.com AES-2012-03-02 March 30, 2012 U.S, Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001

Subject:

Annual Report for VBWR, 2011

Reference:

License DRP-1, Docket 50-18

Enclosure:

Annual Report No. 47 Enclosed is the Annual Report No. 47 for the deactivated Vallecitos Boiling Water Reactor (VBWR) located at Vallecitos Nuclear Center near Sunol, California.

ifthere are any questions or additional information required, please contact me at the number above.

Sincerely,

-A t na McFadden aE Manager, Vallecitos Nuclear Center Cc: John Buckley, NRC (by e-mail)

Robert Evans, Region IV(by e-mail) 1::0 GE Hitachi Nuclear Energy

0 HITACHI GE Hitachi Nuclear Energy Vallecitos Nuclear Center Sunol, California VALLECITOS BOILING WATER REACTOR (DEACTIVATED)

ANNUAL REPORT NO. 47 FOR THE YEAR 2011 LICENSE DPR-1 DOCKET 50-18 MARCH 2012

VBWR Annual Report No. 47 Vallecitos Boiling Water Reactor (Deactivated)

Annual Report No. 47 GE Hitachi Nuclear Energy has maintained the Vallecitos Boiling Water Reactor (VBWR) in a deactivated status under the authority of Amendment No. 21 to License DPR-1, Docket 50-18, issued Oct 22, 2007 In this annual report, a summary of the status of the facility for the period of January 1, 2011 to December 31, 2011 is presented, as required by paragraph 5.d.2 of the license.

1.0

SUMMARY

All reactor systems have been removed from the containment except for the reactor vessel.

The water level within the reactor vessel was monitored and has remained essentially constant throughout the report period.

Radiation and contamination levels remain at acceptable levels.

2.0 STATUS OF FACILITY In accordance with written procedures, the Facility Manager controls access to the containment building and general systems. The facility continues to be in deactivated status in safe storage condition.

3.0 RADIATION AND CONTAMINATION Complete radiation and contamination surveys of the facility indicate that levels remain low.

Results of the surveys are presented in Table 1. The radiation/contamination levels listed are representative but not necessarily maximum values.

4.0 ACTIVITIES Routine inspections were conducted during this report period. No other significant activities occurred at VBWR.

Page 1 of 3

VBWR Annual Report No. 47 5.0 ORGANIZATION The organizational structure changed during 2011. The Site Manager is A. E. McFadden. The VBWR Facility Manager remains M.R. Schrag. The Manager, Regulatory Compliance and EHS is T. Dashiell.

6.0 CONCLUSION

GE Hitachi Nuclear Energy concludes that the deactivated VBWR is being maintained in a safe shutdown condition. The inspections, access control, and administratively controlled activities ensure maximum protection for the public health and safety. The procedures will be continued to maintain this high level of protection.

GE Hitachi Nuclear Energy Vallecitos Operations AnaE. McFadden Manager Vallecitos Nuclear Center Page 2 of 3

VBWR Annual Report No. 47 Table 1 Radiation and Contamination Level Data Vallecitos Boiling Water Reactor (Deactivated)

Contamination Levels Surface Smears Airborne Radiation Levels Beta-Gamma Beta-Gamma*

(mR/h Gamma) (dpm/ftZ)** (p.Ci/cc x 10-10)

Report Year: 2010 2011 2010 2011 2010 2011 Reactor Enclosure, Main Floor 0.42 0.07 General <1.0 <1.0 5,000 800 Top of Spent Fuel Pit Cover 1.0 <1.0 1,500 <100 Reactor Basement 0.08 0.09 Upper Level <1.0 <1.0 Basement Sump <1.0 15 16,000 4,000 General area <1.0 <1.0 2,000 2,000 Deck/Reactor Vessel Head <1.0 3.0 Note:

• Radiation levels, surface smears, and air samples may vary from survey to survey as they are taken in general areas rather than at specific locations.

• • - smear areas are not consistently 1ft2, some range to 15 ft2 Survey Dates:

2010 - 12/11/2010 2011 - 12/08/2011 Survey Point Changes:

West Ladder Removed - Replaced with Basement Sump survey point.

Between Recirc Pumps removed - Replaced with Deck/Reactor Vessel Head survey point.

• 24-hour decayed values Page 3 of 3