ML110940035

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2010 Annual Report No. 43 for the Deactivated ESADA Experimental Superheat Reactor
ML110940035
Person / Time
Site: Vallecitos File:GEH Hitachi icon.png
Issue date: 03/31/2011
From: Doreen Turner
GE-Hitachi Nuclear Energy Americas
To:
Document Control Desk, NRC/FSME
References
DWT-2011-05
Download: ML110940035 (6)


Text

4 Page 1 of 1 0

HITACHI GE Hitachi Nuclear Energy David W. Turner Manager, Vallecitos Nuclear Center DWT-2011-05 March 31, 2011 6705 Vallecitos Road Sunol. CA 94586-9524 USA T +1 925 862 4344 F +1 910 341 2577 M +1 925 200 5060 davidw.turner@ge.com U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001

Subject:

Reference:

Enclosure:

Annual Report for EVESR, 2010 License DR-IO, Docket 50-183 Annual Report No. 43 Enclosed is the Annual Report No. 43 for the deactivated ESADA-Vallecitos Experimental Superheat Reactor (EVESR) 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 Yours, Digitally signed by David W. Turner Date: 2011.03.31 14:29:57 -07'00' David W. Turner Manager, Vallecitos Nuclear Center cc:

John Buckley, NRC (by e-mail)

Robert Evans, Region IV (by e-mail) c~S~

GE Hitachi Nuclear Energy

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0 HITACHI GE Hitachi Nuclear Energy Vollecitos Nuclear Center Sunol, California ESADA-VALLECITOS EXPERIMENTAL SUPERHEAT REACTOR (DEACTIVATED)

ANNUAL REPORT NO. 43 FOR THE YEAR 2010 LICENSE DR-10 DOCKET 50-183 MARCH 2011

EVESR Annual Report No. 43 ESADA-Vallecitos Experimental Superheat Reactor (Deactivated)

ANNUAL REPORT NO. 43 GE Hitachi Nuclear Energy (GEHI has maintained the ESADA Vallecitos Experimental Superheat Reactor (EVESR) in a deactivated status under the authority of Amendment No. 7 to License DR-i0, Docket 50-183, issued December 1, 2008. In this annual report, a summary of the status of the facility for the period of January 1, 2010 to December 31, 2010 is presented, as required by Amendment 7, Appendix A, Technical Specifications, section C. 1.

1.0

SUMMARY

Component removal activities began in 2008 above the 549 foot level. Tech Spec changes issued in Amendment 7 December 1, 2008 authorize the removal of systems beside the reactor vessel and bio-shield below the 549 level. Component removal continued in 2009 and concluded (current scope) in 2010. Entry into the containment building was made for routine radiation surveys and a general examination of conditions throughout the building. In accordance with written procedures, the Facility Manager controls access to the containment building.

Radiation levels remain essentially unchanged. Contamination levels are up slightly, reflecting the ongoing equipment removal activities.

2.0 STATUS OF FACILITY The facility continues to be in deactivated status. The plugs to the reactor vessel and head storage shield, the wooden cover over the fuel storage pool remain in place.

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. Component removal and downsizing was continued.

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EVESR Annual Report No. 43 5 mCi of material in 3,868 ft 3 were removed and disposed in at the facility in Clive, Utah, owned and operated by Energy Solutions.

The equipment disposal concluded during 2010. The crane failure (details in report No. 42 submitted March 2010) limited items removed to smaller items. GEH concluded the current work as the majority of items able to be removed with the current lift capacity have already been removed.

5.0 ORGANIZATION The organizational structure is the same as at the conclusion of 2009. The Site Manager is D. W. Turner. EVESR Facility Manager is M. R. Schrag. The Manager, Regulatory Compliance and EHS is D. R. Krause.

6.0 CONCLUSION

GE Hitachi Nuclear Energy concludes that the deactivated ESADA-Vallecitos Experimental Superheat Reactor is being maintained in a safe shutdown condition with component removal activities in progress. 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 Digitally signed by David W.

O_%

Turner Date: 2011.03.31 y

14:29:43 -07'00.

D. W. Turner Manager Vallecitos Nuclear Center Page 3 of 3

EVESR Annual Report No. 43 Table 1 Radiation and Contamination Level Data ESADA-Vallecitos Experimental Superheat Reactor (Deactivated)

Contamination Levels Surface Smears Airborne Radiation Beta-Gamma Beta-Gamma 1 Levels (dpm/ft2)

(jVCi/cc x 10-10)

(mR/h Gamma)

Report Year 2009 2010 2009 2010 2009 2010 Reactor Enclosure Top of spent fuel pool

<1

<1 500 200 (main floor) 549-ft level (main floor)

<1

<1 75 300 2.18 0.01 534-ft level

<1.5

<1 1000 500 519-ft level

<1

<1 500 1500 0.69 0.02 503-ft level (maximum

<1

<1 500 ND*

pipe reading) 487-ft level (basement)

<1

<1 750 5000 0.68 1.39 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.

Survey Dates:

2009 - 01/12/2010 2010 - 12/08/2010

  • ND - No Data taken, access to area blocked by scaffolding.

1 24-hour decayed values Page 4 of 3