ML19261B500
| ML19261B500 | |
| Person / Time | |
|---|---|
| Site: | Vallecitos Nuclear Center |
| Issue date: | 12/31/1978 |
| From: | GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML19261B498 | List: |
| References | |
| NUDOCS 7902260424 | |
| Download: ML19261B500 (4) | |
Text
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VALLECITOS BOILING WATER REACTOR ANNUAL REPORT NO.14 (Deactivated)
License DPR-1 Docket 50-18 190226DW-
VALLECITOS BOILING WATER REACTOR ANNUAL REPORT NO.14 (Deactivated)
The status of the Vallecitos Boiling Water Reactor (VBWR) during the calendar year of 1978 is described in this fourteenth report of the deactivated facility, in conformance with License DPR-1, Docket 50-18, Amendment 19, Paragraph 5.d.2.
I.
SUMMARY
The facility remained essentially in a static condition as described in Annual Report No.13. Entry into the containment building was made for routine radiation surveys ano for a check of general conditions throughout the building to verify the unchanged cendition of the facility. The reactor vessel water level was monitored and remained essentially constant.
IL STATUS OF THE FACILITY A. CONTAINMENT BUILDING No changes were made during the report period.
B. GENERAL SYSTEMS No changes were made during the report period.
III. PERIODIC INSPECTIONS Inspections of the facility were continued on a routine basis. The annual air samples and radiation and contamination surveys of the containment vessel are given in Table 1 of this report.
The poor air quality in the containment building required that entry be made with self-contained breathing appartus. The air quality is a result of stagnation, and although the oxygen levels are normal, the air is unbreathable because of odors.
Safety considerations involving the use of breathing equipment prevented entry into some areas of the containment.
IV. RADIATION AND CONTAMINATION Radiation and contaminaton surveys cf the facility indicate the levels in all cases were well below the limits for any safety concern.
V. CONCLUSION In our opinion, the deactivated Vallecitos Boiling Water Reactor continues to be maintained in a safe condition, commensurate with its shutdown status. The methods of inspection and control of safety related items ensure maximum protection for the public and the General Electric Company.
GENERAL ELECTRIC COMPANY Irradiation Processing Operation By II #'
D. L. GiHiland, Manager Reactor Irradiations
TABLE 1.
Radiation and Contamination Report Contamination Levels Radiation Surface (Smears)
Airborne Levels Beta-Gamma Beta-Gamma 2
3 (mR/h Gamma)
(c/m/100 cm x 10 )
( Ci/cc x 10-10) 12/77 12/78 12/77 12/78 12/77 12/78 Reactor Enclosure Main Floor - General Field
<1 0.5
<0.3 0.3 0.41*
0.11*
- 1. Top of Missile Shield, Field
<1 0.5
<0.3 0.3 NA NA
- 2. Top of Spent Fuel Pit Cover
<1 1.25
<0.3 0.3 NA NA
- 3. Pit (down 3 f t) 1.5 1.75 NA NA NA NA Reactor Basement
- 1. Upper Level, Field 10 14 NA NA NA NA
- 2. Bottom Wall, Ladder 18 10 0.4 0.5 NA NA
- 3. East Ladder, Bottom 10 40 4.0 3.5 NA NA
- 4. West Ladder, Bottom 17 25 0.5 0.5 0.41*
1.70*
- 5. Between Recirculation Pumps 2 feet off Deck 50 50 NA NA NA NA
- 6. RCP No.1 Surface 30 40 5.0 5.0 NA NA
- 7. RCP No. 2 Surface 30 40 2.0 3.0 NA NA
- 8. Downcomers 60 60 0.7 0.9 NA NA
- 9. Downcomers be dnd Reactor 5
Shield 35 50 3.0 2.5 NA NA
- 10. Main Steam Line 50 6
5.5 5.0 NA NA Enclosure Stack-Outside Surface
<1
<1
<0.1
<0.1 NA NA Main Valve Pit Valve Pit Lines and Valves
<1
<1
<0.1
<0.1 NA NA NA indicates readings not taken or not analyzed.
- 24 hour decay.
NOTE: Radiation levels, surface smears and air samples will vary from survey to survey as they are taken in general areas rather than at specific locations..