ML20028B204
| ML20028B204 | |
| Person / Time | |
|---|---|
| Site: | 07000025 |
| Issue date: | 11/12/1982 |
| From: | Remley M ROCKWELL INTERNATIONAL CORP. |
| To: | Spencer G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML20028B197 | List: |
| References | |
| 82ESG-8018, NUDOCS 8211300166 | |
| Download: ML20028B204 (3) | |
Text
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E!!j; Energy Systems Group Rockwell 0 /;y'%
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Telex: 181017 November 12, 1982 In reply refer to 82ESG-8018 lir. George S. Spencer, Director Division of Radiological Safety &
Safeguards Program U.S. Nuclear Regulatory Cornmission Region V Office 1450 Maria Lane, Suite 210 Walnut Creek, California 94596
Dear Mr. Spencer:
Subject:
Safety Inspection of Energy Systems Group Your letter of October 18, 1982, reported on the routine safety inspection by !!essrs. B. L. Brock and P. R. Zurakowski of your staff on August 23-27, 1982, of activities authorized by our special nuclear material license, SNM-21. The report included one apparent item of noncompliance with NRC requirements. The item involved a personnel radiation overexposure which had previously been reported to your office by telephone and in my letter to Herbert Book on July 23, 1982. This letter will summarize the corrective actions that have been taken to prevent future items of noncompliance of this type in our activities.
As indicated in both our report of the exposure in July and the NRC inspection report, a number of corrective actions were initiated traaediately af ter the discovery and investigation of the radiation exposure. These actions related to both the Rad-Pac and SEFOR acti-vities in which the exposure occurred, as well as to our syst.em for overall control of personnel exposure to radiation. These corrective actions have included the following:
1.
The procedures for handling the Rad-Pac radiation capsules have been modified to require explicitly a cooling period of a minimum of 3 days before unloading the wires. This will result in significant cooling of the aluminum parts of the radiation capsule.
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November 12, 1992 Rockwell Page 2 International 2.
A shielding block has been designed and fabricated for use in loading previously irradiated wires into the aluminum holders. This block provides a significant reduction in the radiation field to the extremities of the operator during loading of the previously irradiated wires.
3.
The instruments for handling the irradiated wires have been modified to permit the handling of the wires behind shield-ing blocks. This also results in significant reduction of the radiation field in which the operator's hands are located during the Rad-Pac unicading operation. Hand guards have been installed on the forceps to prevent the operator's hands from sliding toward the working end.
4.
The SEFOR decladding operation has been completely modified by installing manipulators in the glove box to permit remote handling of the fuel materials and by the installation of remotely operated equipment. These changes have resulted in major reductions in the radiation fields in which the hands of the operators are located during the decladding operation.
5.
One set of lithium fluoride TLD chip finger rings used to monitor hand exposures is being sent approximately every 2 weeks to R. S. Landauer, our vendor, for processing and immediate reporting of the exposures for the period.
6.
A second set of lithium fluoride TLD chips is used as additional monitors of the hand exposure of all the operators, and these chips are processed by our Health Physics staff on approximately a weekly basis to provide essentially continuously current information on the extremity exposure of the operators.
7.
An ir.dividual exposure reporting form has been established for each employee working on the SEFOR decladding operation, and these forms are maintained by the health physicist at the hot laboratory. The health physicist records the expo-sure data on head, trunk, and hands, maintains a continuing current evaluation of the data, and advises the supervision of the SEFOR operation on the availability of personnel for work assignments based upon their cumulative radiation exposure.
November 12, 1982 Rockwell Page 3 International These corrective act uns are being closely monitored by both the supervision at the r-iwell International Hot Laboratory and in our Health, Safety & R..
ition Services Department. The results of these actions to date. h te effective control of the personnel radiation exposures and acceptable exposures to all individuals involved in the activities at the hot laboratory.
The implementation of the corrective actions with the results as described above indicates that we are in full compliance with NRC requireuents and should avoid any further items of noncompliance.
If you have any questions or desire additional information, please call me at (213) 700-4439.
Sincerely s,
M. E. Remi
, Div[ector Health, Safety & 1adiation Services Energy Systems Group 0892A/cmt
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