ML19317D278
| ML19317D278 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/05/1976 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 7911210645 | |
| Download: ML19317D278 (3) | |
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DISTRIBUTION g iles OCT 5 1976
$k LOCAL PDRs ORB #1 Reading Dockets ios T
tr 50-270 ASchwencer and 50-237 SMSheppard DNeighbors OELD Unka Power Company DJaffe ATT!!:
Mr. 'Jilli u 0. Parker, Jr.
OI&E(3)
Vice President DEisenhut Stea:a Procuction TBAbetnathy Post Office Sox 21/3 JRBuchanan 422 South Church Street ACRS (16)
Charlotte, North Carolins 23242 Gentlemen:
RE:
OC0 HEE STATICH, d4ITS 1, 2 & 3 The HP.C considers Loose-Parts tionitoring Systens (LPNSI to be valuable and proven tools for detecting foreign,.sisplaceo, or loose cojects in reactor coolant systems.. To assist us in cre-caring Regulatory QJides regarding installation and operation of LP81S, we would appreciate the benefit of your experience with LP1S.
The infomation you provide will directly contribute to the accuracy and usefulness of these Regulatory Guides.
Accordingly, it would be appreciated if you could provide us written responses to tne enclosed questions in the near future, and if at all possible, Drfor to NovenDer I,1976.
This request for generic information was approved by GAC under a blanket clearance number S-IS022S (R0072); this clearance expiras July 31, 1977.
Sincerely, l
Original signed by r
S U
A. SchwerMr Chief Operating Reactors Branch *1 Division of Ccerating Reactors 7911210 hf[ fd l
Enclosure:
Recuest for Infomation 1
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Duke Power Company Octob:r 5, 1976 cc: Mr. William L. Porter Duke Power Company P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242 fir. Troy B. Conner Conner & Knotts 1747 Pennsylvania Avente,fl. W.
Washington, D. C.
20006 Oconee Public Library 201 South Spring Street l'ilhalla, South Carolina 20691 9
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REQUESTS FOR INFORMATION ON OPERATING EXPERIENCE WITH LOOSE-PARTS AND LOOSE-PARTS MONITORING SYSTEMS (LPMS) 1.
Please briefly describe any events in which a loose-part was found in your primary loop. Discuss, for each such event, the procedures used to discover the loose-part, its safety consequences and the measures taken to remove it. Assess the usefulness of a LPMS for each of the occurrences described above.
2.
Please describe briefly: your LPMS and its operation, the length of time it has been in operation, and the extent of monitoring (e.g.,
continuously, automatic actuation, etc.).
3.
Please describe the operating experience to cate including any false alarms or spurious signals.
If either have occurred, please describe each event. Similarly, has any event occurred that should have, but did not, cause a noise indication? If so, please describe each event.
4.
Discuss the cost / benefit considerations of your LPMS, and your degree of confidence in such systems.
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