ML19317F927
| ML19317F927 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 08/16/1977 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML19317F919 | List: |
| References | |
| NUDOCS 8002210643 | |
| Download: ML19317F927 (3) | |
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S: 'U~0 SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 S Streei Box 15839. Sacramento, California 95813; (916) 452-3211 August 16, 1977
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Nuclear Regulatory Comission ATTN:
Mr. R. H. Engelken Director of Regulatory Operations NRC Operations Office, Region V 1990 North California Boulevard Walnut Creek Plaza, Suite 202 Walnut Creek, California 94596
Reference:
IE inspection Report No. 50-312/77-08 Followup - Additional Information Gentlemen:
The July 28, 1977, reply to Mr. F. Wenslawski's audit on June 13-16 and 24, 1977, failed to commit to specific dates when each action item would f7 be fully complied with.
For clarification the July 28, 1977, response has been
(,O repeated here with bars located in the right-hand column where changes have I
been made that add the completion dates for each item.
" Appendix B, Technical Specification 4.10, requires the installation of TLD badges at specified locations in the environs of the facility to measure integrated radiation levels.
Badges are ta be changed at quarterly intervals.
Contrary to this requirement to measure radiation levels in the environs of the facility, your processing of the TLD badges for the first quarter of 1977 was performed with a aefective instrument resulting in invalid environmental radiation exposure data for that quarter "
StiUD Reply When the TLD chips were measured for the first quarter of 1977, all five chips from each monitoring site were processed. To prevent loss of future readings should a failure of the equipment occur, only four of the five chips from each monitoring site will be processed. Should a determination of a failure occur, the equipment will be repaired, calibrated and the fifth (standby) chip will be processed to obtain the environmental radiation exposures. A procedure has been written'to properly cal!brate and document the TLD reader calibration.
Included in the procedure are requirements that if the instru-
,m T mentation technician observes any significant deviation of the response
( V characteristics during the calibration procedure, he will notify the Radiation Control personnel prior to their use of the equipment. Applicable procedures 8002210 $ U
Mr. R. H. Engelken Page 2 August 16, 1977
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are also being reviewed to assure conformance to NRC Guide 4.13. " Performance Testing and Procedural Specifications for TLD's; Environmental Applications."
s The completion, review and approvals of this procedure should be ready prior to the next quarterly environmental monitoring TLD readings. A training session of the Radiation Control Personnel who use this equipment is being prepa red. The session will stress the importance of recognizing aberrant readings of the environmental data.
Should such readings be detected, a supervisor will be notified for appropriate action.
The procedures will Se completed, put into effect and the training will be completed prior to August 19, 1977.
The above corrections should prevent recurrence of this infraction.
" Appendix A, Technical Specification 6.11, requires that procedures for personnel radiation protection shall be prepared consistent with the requirements of 10 CFR 20 and shall be approved, maintained and adhered to for all operations involving personnel radiation exposure.
Rancho Seco Procedure AP-500, " Emergency Plan," Section Ill.E, " Radiation Evacuation Procedures," states that "a single unannounced constant air monitor radiation alarm" will be cause for an in-plant local area evacuation to be initiated.
This procedure also states that "In cases where the alarm is associated with 4
an air monitor, appropriate respiratory protection will be worn when initial s
i re-entry and alarm verification is made."
Contrary to this requirement, on April 14, 1977, an evacuation of the waste gas compression room area of the Auxiliary Building was not initiated until 44 minutes af ter the VSG airborne activity monitor reached an alarm point for the waste gas compressor room.
In addition, initial verification entri2s into the high airborne radioactivity area were made by an auxiliary operator and a chemical / radiation assistant without wearing respiratory protection."
SMUD Reply Retraining is being planned to include reinforcement of responses to hazards of entering areas of known airborne radioactivity.
Simultaneously a respiratory training program has been initiated for the physical work force at Rancho Seco. The force includes operators, maintenance and repair personnel, and contractors who may have use of the respiratory equipment. As of this date (July 25,1977) seventy (70) personnel have completed this program and sessions are planned to train approximately one hundred (100) additional personnel. This training should be complete prior to the unit shutdown for Core 11 refueling scheduled for August 19, 1977 Operator training for swift evaluation of airborne activity is being enhanced to permit evaluation of significant activity levels during the back-snifts and weekends.
(Day shifts are covered by Radiation Control personnel.)
The training will include use of the Hi-Vol particulate sampling devices and methods for assessing the activity collected. Grab sampling devices for detec-('~')Ntion of significant levels of adioactive gases have been procured.
Procedures for their use and evaluation of activities are being written and will be completed
s Mr. R. H. Engelkan Page 3 August 16, 1977
.by August 31, 1977.
Specific' training in the use of equipment and training' that stresses adherence to the Emergency Plan requirements will be completed prior to December 31, 1977 A program has been started that will establish background airborne activity levels and detect abnormal levels prior to reaching the Ventilation System Gas Radiation Monitor setpoints. These surveys of the Auxiliary Building will be. performed twice per week.
The above' actions will Instruct personnel in the use of respiratory devices and the necessity of following established procedures and 'will allow
. rapid determination of airborne activities.
Respectfully submitted, J. J. Mattimoe Assistant General Manager and Chief Engineer JJM:RWC: Jim 4
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