ML20070W176

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Advises That Implementation of NUREG-0737,Items II.F.1(1) Re Noble Gas Effluent Monitor & II.F.1(2) Re Sampling & Analysis of Plant Effluents,Will Be Delayed Until 830315 Due to Component Failure
ML20070W176
Person / Time
Site: Hatch Southern Nuclear icon.png
Issue date: 02/11/1983
From: Gucwa L
GEORGIA POWER CO.
To: Stolz J
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.1, TASK-TM GL-82-05, GL-82-5, NED-83-093, NED-83-93, TAC-47604, TAC-47605, TAC-47746, TAC-47747, TAC-48451, TAC-48452, TAC-48501, TAC-48502, NUDOCS 8302180320
Download: ML20070W176 (2)


Text

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== m Georgia Power Power Generation Department February 11, 1983 Director of Nuclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Branch No. 4 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555 NRC DOCKET 50-321 OPERATING LICENSE DPR-57 EDWIN I. HATCH NUCLEAR PLANT UNIT 1 NUREG-0737 ITEMS II.F.1.(1), AND II.F.1.(2)

IMPLEMENTATION SCHEDULE Gentlemen:

Georgia Power Company's letter of June 7,1982, transmitted a schedule for implementation of certain requirements promulgated by NUREG-0737. Among these requirments were Item II.F.l(l), Noble Gas Effluent Monitor, and Item II.F.l(2), Sampling and Analysis of Plant Effluents. It was estimated that these items would be implemented at Plant Hatch Unit 1 by the end of the current outage following cycle 58. While physical installation has been completed, a recently discovered component failure necessitates a change in l the estimated implementation date to March 15, 1983.

Implementation of Items II.F.l(l) and II.F.l(2) involves the installation of high range gaseous effluent monitors at the Off-Gas Vent Pipe (Main Stack) and the Reactor Building Vent Plenum. These monitors supplement the previously existing normal-range monitors to provide the capability for radioactive iodine and particulate collection and noble gas j monitoring over the required range of conditions. Each high-range monitor utilizes five Geiger-Mueller (GM) detectors. Three of these are used to monitor iodine and particulate collectors and two are used for noble gas monitoring. Associated with each GM detector is a 0.5 p C1 Chlorine-36 check source. Tha initial set of GM detectors were found to have leaking check sources last fall and were returned to the manufacturer for replacment. Replacement detectors were received and during installation it was discovered that the check sources were leaking on all detectors. Since l

l it is virtually impossible to verify the factory cali] ration of the GM tubes l without the correct check source, (and since field calibration of high-range detectors is not considered practical) the vendor has been requested to l

provide replacement check sources of an improved design and factory calibrated GM tubes. Delivery of these components is being expedited to the extent possible; however, the implementation date is estimated to be March 15, 1983.

8302180320 830211 .Oh L

PDR ADOCK 05000321 P PDR

Georgia Power d Director of Nuclear Reactor Regulation Attention: Mr. John Stolz, Chief Operating Reactors Branch No. 4 February 11, 1983 Page Two Interim measures for quantifying high level releases, which were described in enclosures 8b and 8c of our January 25, 1980 letter, will continue to be available during the interim period.

Plmse contact this office if there are any gestions.

Very truly yours,

/.C Q w L. T. Gucwa Chief Nuclear Engineer JH/mb xc: J. T. Beckham, Jr.

H. C. Nix, Jr.

J. P. O'Reilly (NRC- Region II)

Senior hesident Inspector l

700775

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