ML19316A670
| ML19316A670 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 11/30/1972 |
| From: | Maccary R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001130219 | |
| Download: ML19316A670 (2) | |
Text
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Richard C. DeYoung, Assistant Director for Pressurized Water teactors Directorate of Licensing TESTING PROGRAM REQUESIED FOR CONFIPJ11NG THE OPERABILITY OF ACTIVE VALVES Flant Name* Oconce 2 & 3 Licenr.ing Stage:
Docket Uueber:,50-270/287 Responsible BranDnf Project Manager: PWR-4; I. A. Peltier Review Status: 'Avaiting Information Enclosed is a requent for additional inforr.tation by the Mechanical Engineering Branch, Directorate of Licensing, for corapleting the TSAR final evaLtation of the subject plant.
We recoz:=end that the applicant be advised of the need to respond promptly to this request. To assist in expediting the response, Mechanical Engineering Branch is prepared to discuss the valve operability program proposed by the applicant at a meeting scheduled 1
at the earliest date.
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t' R. R. Maccary, Assistant Director for Engineering
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Directorate of Licensing
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Enclosure:
DISTRIBUTION:
Request for Additional Information 1
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(50-287)
S. H. Eanauer, DRTA A. Giambusso, L.
L Reading File J. M. Ucadrie, L W. G. Mcdonald, L MEB R/F.
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A. Schwencer, L D. F. Lange, L
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3' Form AEC-Sta (Rev.9 53) AECM 0240 e u o so tewsm NTm oresca: 1972-466-984 '
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OCONEE - UNITS 2 & 3 REQUEST FOR ADDITIONAL INFORMATION l
MECHANICAL ENGINEERING. BRANCH, L j
The limited dynamic analytical and testing procedures used to confirm f
the operability of all active valves as specified in the "esponse to question 9, FSAR Supplement 12-3, is insufficient.
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An acceptable program would be in-situ valve testing where the operability of valves is demonstrated in the plant during the preoperational testing of those systems designed to Seismic Category I criteria. Provide the details of such a program which would demonstrate operability under normal system operation, as well as under superimposed loading, that simulate appropriately vibratory seismic, and accident (LCCA) vibratory responses, as applicable to the system.
This program may include either the application of vibratory devices to superimpose the vibratory seismic and accident loadings or an equivalent combination of analytical and testing methods that confirm operability.
The test program may be based upon selectively testing a representative number of active valves in the piping system according to valve type, seismic and accidant load level, size, etc. on a prototype basis.
,