ML080920129

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GE-Hitachi Nuclear Energy - Annual Report No. 40 for EVESR, 2007
ML080920129
Person / Time
Site: Vallecitos File:GEH Hitachi icon.png
Issue date: 03/28/2008
From: Latonya Mahlahla
GE-Hitachi Nuclear Energy Americas
To:
Document Control Desk, NRC/FSME
References
Download: ML080920129 (5)


Text

0 1 HITACHI GE Hitachi Nuclear Energy LaTonya Mahlahla Vallecitos Nuclear Center 6705 Vallecitos Rd Sunol, CA 94586 USA T 925 862 4360 F 910-341-2972 Latonyo.mahlalo@ge.com U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Attn: Document Control Desk March 28, 2008

Subject:

Reference:

Enclosure:

Annual Report for EVESR, 2007 License DR-IO, Docket 50-183 Annual Report No. 40 Enclosed is the Annual Report No. 40 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, Date:200/0.8 11:35:55 -07'00' LaTonya L. Mahlahla Mgr., Regulatory Compliance & EHS cc: John Buckley (email)

LLM-2008-07 EVESR Annual Report

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

ANNUAL REPORT NO. 40 FOR THE YEAR 2007 LICENSE DR-10 DOCKET 50-183 MARCH 2008

0.

GE Hitachi HITACHI Nuclear Enerav ESADA-Vallecitos Experimental Superheat Reactor (Deactivated)

Annual Report No. 40 General Electric Company has maintained the ESADA Vallecitos Experimental Superheat Reactor (EVESR) in a deactivated status under the authority of Amendment No. 3 to License DR-10, Docket 50-183, issued June 11, 1976. In this annual report, a summary of the status of the facility for the period of January 1, 2007 to December 31, 2007 is presented, as required by paragraph 3.E.2. of the license.

1.0

SUMMARY

The facility remains in essentially the same condition described in Annual Report No. 39.

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.

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, and the locked covers for the personnel and equipment hatchways remain in-place except during maintenance or inspection activities.

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. There were no preventive or corrective maintenance activities performed having safety significance during the reporting period.

0 HITACHI GE Hitachi Nuclear Enerav 5.0 ORGANIZATION The management and operations organization for the EVESR is described in Technical Specification IX of License DR-10. The organizational structure has not changed since the last report. The Site Manager was D. W. Turner. C. W. Bassett was the EVESR Facility Manager.

6.0 CONCLUSION

GE Hitachi Nuclear Energy concludes that the deactivated ESADA-Vallecitos Experimental Superheat Reactor 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 C. W. Bassett, Manager Facilities Maintenance & QA

0

.HITACHI GE Hitachi Nuclear Enernv Table 1 Radiation and Contamination Level Data ESADA-Vallecitos Experimental Superheat Reactor (Deactivated)

Contamination Levels Surface Smears Airborne Radiation Levels Beta-Gamma' Beta-Gamma 2 (mR/h Gamma)

(cpm/ft 2)

(ýiCi/cc x 10"10 )

Date of Measurement:

12/06 12/07 12/06 12/07 12/06 12/07 Reactor Enclosure Top of spent fuel pool (main 0.5

<1 200 300 floor) 549-ft level (main floor)

<1

<1 300 250

.009

.003 534-ft level

<1-2

<1-1.5 2000 100 519-ft level

<1-2

<1-2 200 300

.024

.003 503-ft level (maximum pipe 0.5

<1 700 2000 reading) 487-ft level (basement)

<1-1.5

<1 500 1000

.024

.004 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%.

2 24-hour decayed values