ML20153B050
| ML20153B050 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 10/16/1978 |
| From: | Short T OMAHA PUBLIC POWER DISTRICT |
| To: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| NUDOCS 7811290390 | |
| Download: ML20153B050 (2) | |
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.s Omaha Puhlic Power District M
1623 HARNEY a OMAdA. NEDMASMA 68102 s T E L E 8'H O N E 536 4000 AREA CODE 402 October 16, 1978 Mr. Glen Madsen U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region IV 611 Ryan plaza Drive Suite 1000 Arlington, Texas 76012 l
Reference:
NRC-0IE Report 50.-285/76-15, l
' dated December, 1976
Dear Mr. Madsen:
In a letter dated January 7, 1977, the District responded to a question raised in the above-referenced inspection report, regarding the status of action taken to close out Open Item 73-16/2 concerning certain process monitors having high background count rates. Speci-fically,' the Commission was informed that investigations were under-vay to correct problems with monitors RM-056B and RM-059 and that con-sideration was being given to replacing these detectors with high tem-perature monitors, if available.
This letter is to inform you that, to date, the District has been unable to procure satisfactory high temperature detector systems with proper certification. However, radiation monitor m4-059 vill be re-located such that high detector temperature should present no problem.
This should be accomplished by May 1, 1979 Furthermore, radiation monitor RM-056B will be left as is, without replacement or modifica-tion, for the following reasons:
(1)
The last maintenance order incued for RM-056B vas December 5, 1975, to replace the voltage card. Since that time, the detector hao operated satisfactorily.
(2)
A' steam generator blowdown treatment system, currently j
under design, is scheduled to be &cstalled and operable by 1980.
This modification would eliminate the detector being exposed to high temperature fluid streams.
(3).
Rare malfunction of RM-056B does not constitute a health or safety problem to the general public. This is because
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RM-056B.is located in the rav vater overboard line and monitors nine effluent streams, two of which may contain 78112%0394)
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=hk. Glen-Madsen October 16, 1978, Page Two-i radioactivity; steam generator blowdown and sampling system discharge.
RM-05hA and RM-05hB are located upstream of RM-056B, providing monitoring of steam' generator blowdown and' sampling effluents. In addition, RM-05hA and RM-05hB will isolate steam generator effluents before applicable radio-active release limits are reached.
The District feels that the above approach is satisfactory to re-solve problems / experienced with these two detectors. The relocation of RM-059 should finally-close out Open Item 73-16/2.
Sincerely, l
\\.,0 00 ' fl I
- >T.E.fShort Division Manager j
Production Qperations i
TES/KJM/BJH:jmm cc:
LeBoeuf, Lamb, Leiby A MacRae 1757 "N"' Street, N. W.
4 Washington, D. C.
20036 t
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