ML19199A216
| ML19199A216 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/12/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Herbein J METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7904040312 | |
| Download: ML19199A216 (1) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE 0: INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Information Notice No. 79-05 Date: March 21, 1979 Page 1 of 2 USE OF IMPROPER MATERIALS IN SAFETY-RELATED COMPONENTS Two instances of the addition of improper materials to safety-related components during maintenance have recently been identified by NRC inspections.
Materials on Valve Seating Surfaces An NRC inspector found that maintenance personnel at the Surry nuclear power plant had added wax or grease to certain valve seating surfaces.
These valves included the containment spray and recirculation spray isolation valves. This material could have affected the measured leak rate through these containment penetrations.
VEPC0 personnel said that the material was believed to have been added to prevent damage to the valve seating surfaces during dry valve testing.
It had not been removed following completion of the maintenance procedure.
VEPC0 personnel also reported that a lack of any definitive administrative guidance as to what lubricants, if any, could be used during valve maintenance, centributed to this problem. The corrective action included modifica-tion of the procedures to include more precise inspection by quality control personnel following valve maintenance.
Grease in Snubbers An NRC inspector found that maintenance personnel at the Browns Ferry nuclear power plant had added grease to the hydraulic fluid reservoirs of eight Bergen-Paterson snubbers.
The grease had mistakenly been cdded, during a scheduled lubrication procedure, through the alemite type fittings used for normal fluid addition. A similar error involving thirteen snubbers had previously been made at this facility.
At that time the decision had been made to install a different type of fitting on the snubbers. However, the replacement parts had not arrived in time for installation prior to the more recent lubrication.
At the time of the earlier occurrence, TVA personnel had removed the affected ent:bbers and tested them for lock-up and bleed rate.
The results had been within specification. Nevertheless, the un prior to reinstallation.
NRC inspec-D_UPLICATE DOCUMENT of the later set of greased snubbers one cubic inch of grease was found i Entire document previously entered into system under:
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NUCLEAR REGULATORY COMMtsSION
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KING OF PRUS$1 A. PENNSY LV ANI A 19406 March 12, 1979 Docket Nos. 50-289 50-320 Metropolitan Edison Company ATTN:
Mr. J. G. Herbein Vice Pres *1ent - Generation P. O. Box 542 Reading, Pennsylvania 19640 Gentlemen:
Enclosed is IE Bulletin No. 79-03, which requires action by you with regard to your power reactor facility (ies) with an ooerating license or a construction permit. A written response is required.
Should you have any questions regarding this Bulletin or the actions required by you, please contact this office.
Sincerely, Y
f Boyce H. Grier k Director
Enclosures:
1.
List of IE Bulletins Issued in Last Twelve Months cc w/encls:
E. G. Wallace, Licensing Manager J. J. Barton, Project Manager R. C. Arnold, Vice President - Generation L. L. Lawyer, Manager - Generation Operations G. P. Miller, Manager - Generating Station - Nuclear J. L. Seelinger, Unit 1 Superintendent W. E. Potts, Unit 1 Superintendent - Technical Support J. B. Logan, Unit 2 Superintendent G. A. Kunder, Unit 2 Superintendent - Technical Support I. R. Finfrock, Jr.
Mr. R. Conrad G. F. Trowbridge, Esquire Miss Mary V. Southard, Chairman, Citizens for a Safe Environment 117110 79040403(>