ML090930302

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GE-Hitachi's Submittal of Annual Report No. 44 for Vbwr, 2008
ML090930302
Person / Time
Site: Vallecitos Nuclear Center
Issue date: 03/31/2009
From: Don Krause
GE-Hitachi Nuclear Energy Americas
To:
Document Control Desk, NRC/FSME
References
Download: ML090930302 (5)


Text

GE Infrastructure Energy, Nuclear

  • I HITACHI Donald R. Krause Manager, Regulatory Compliance and EHS Vallecitos Nuclear Center 6705 Vallecitos Rd Sunol, CA 94586 USA T 925 862 4360 F925 304-7435 31 March 2009 Donald.Krause@ge.com U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Attn: Document Control Desk

Subject:

Annual Report for VBWR, 2008

Reference:

License DPR-1, Docket 50-18

Enclosure:

Annual Report No. 44 Enclosed is the Annual Report No. 44 for the deactivated Vallecitos Boiling Water Reactor (VBWR) located at Vallecitos Nuclear Center near Sunol, California.

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

Sincerely, Donald R. Krause, Manager, Regulatory Compliance and Environment, Health, and Safety c: John Buckley (email)

~j~wS5DI GE Hitachi Nuclear Energy Americas, LLC DRK-2009-18 VBWR Ann Report.doc

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

ANNUAL REPORT NO. 44 FOR THE YEAR 2008 LICENSE DPR-1 DOCKET 50-18 MARCH 2009

VBWR Annual Report No. 43 Vallecitos Boiling Water Reactor (Deactivated)

Annual Report No. 44 GE Hitachi Nuclear Energy has maintained the Vallecitos Boiling Water Reactor (VBWR) in a deactivated status under the authority of Amendment No. 19 to License DPR-1, Docket 50-18.

In this annual report, a summary of the status of the facility for the. period of January 1, 2008 to December 31, 2008 is presented, as required by paragraph 5.d.2 of the license.

1.0

SUMMARY

VBWR - 2008 Component Removal Activities Component removal activities within the VBWR containment commenced during October 2007.

The effort was completed in 2008. All reactor systems have been removed except for the reactor vessel. All waste has been packaged and removed from the containment. The water level within the reactor vessel was monitored and remained essentially constant throughout the report period.

One incident (Incident 08-04) occurred during the remediation activities. A small fire occurred when sparks from hot work traveled downward to another level where a small Class A fire occurred. There was no personnel injury, equipment damage or environmental release.

Radiation levels remain essentially unchanged.

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.

Dismantling operations did not significantly increase the site's airborne radiological effluent release rate. Continuous general air sampling was performed within the VBWR containment during dismantling operations for personnel monitoring and to assess the potential release of radiological effluents to the environment. Using The Comply Computer Code, a conservative Page 1 of 3

VBWR Annual Report No. 43 estimate of the Effective Dose Equivalent to the public from VBWR was less than 1.2 E-2 mrem/year.

4.0 ACTIVITIES Routine inspections were conducted during this report period. Component removal activities started in October 2007 and are described in Section 1.0, Summary.

5.0 ORGANIZATION The organizational structure was changed during 2008. The Vallecitos Nuclear Center (VNC)

Site Manager remained D. W. Turner. The VBWR Facility Manager was C. W. Bassett and changed to J. L. Grinold. The Manager, Regulatory Compliance and EHS was L. L. Mahlahla and changed to D. R. Krause.

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 J.L. Gs4d, Manager Faciitir aintenanc and QA Page 2 of 3

VBWR Annual Report No. 43 Table 1 Radiation and Contamination Level Data Vallecitos Boiling Water Reactor (Deactivated)

Contamination Levels Surface Smears Airborne Radiation Levels Beta-Gamma* Beta-Gammat (mR/h Gamma) (cpm/ft2 ) (gCi/cc x 10.10)

Date of Measurement: 12/07 12/08 12/07 12/08 12/07 12/08 Reactor Enclosure, Main Floor General <1.0 <1.0 300 150 0.03 0.02 Top of Spent Fuel Pit Cover < 1.0 < 1.0 <100 200 0.04 Not taken Reactor Basement 0.04 0.02 Upper Level, Field <1-1.5 <1.0 ........

West Ladder, Bottom 5.5 5.0 400 2200 ....

East Ladder, Bottom <1.0 <1.0 600 2000 .03 Not taken Between Recirculation Pumps (located 2 feet above 2.5 <1.0 deck) (* RCPs removed)

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.

  • For conversion to d/m, assume an instrument efficiency of 20%.

t 24-hour decayed values Page 3 of 3