ML20197F544

Advises Util to Follow Guidance Identified in Generic Ltr 87-07, Environ Qualification of Electrical Equipment Important to Safety for Nuclear Power Plants, Re Written Justification for Continued Operations

ML20197F544
Person / Time
Site:	Calvert Cliffs
Issue date:	06/03/1988
From:	Varga S Office of Nuclear Reactor Regulation
To:	Tiernan J BALTIMORE GAS & ELECTRIC CO.
References
GL-87-07, GL-87-7, NUDOCS 8806140035
Download: ML20197F544 (2)

Text

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n June 3, 1988 Docket Nas. 50-317 DISTRIBUTION and 50-318 Docket-File m CVogan NRCPDR" """" SMcNeil Mr. J. A. Tiernan Local PDR EJordan Vice President - Nuclear Energy PDI-1 Rdg. JPartlow Baltimore Gas and Electric Company OGC RCapra Post Office Box 1475 SVarga ACRS(10)

Baltimore, Maryland 21203 BBoger AThadani PShemanski LTripp, RI

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF CONTAINMENT PENETRATIONS AT CALVERT CLIFFS UNITS 1 AND 2 During a Region III Environmental Qualification (EQ) Inspection at the Braidwood Station conducted during February and March 1988, it was determined that the environmental qualification of four Bunker Ramo containment pene-tration assemblies had not been adequately demonstrated. In response to a recent request, you provided information regarding the verification of qualification for Amphenol penetration assemblies installed at Calvert Cliffs which may be identical to the Bunker Ramo penetrations. After reviewing this information we conclude that environmental qualification has still not been demonstrated for these assemblies. The documentation (test reports) used to support your position that these penetration assemblies are qualified is similar to that used for Braidwood 2. That documentation did not provide sufficient information (for example, insulation resistance test data) to conclude that operability under design basis events has been fully demon-strated.

Since EQ had not yet been established for the subject penetrations installed at Calvert Cliffs, you should follow the guidance identified in Generic Letter 88-07, "Environmental Qualification of Electrical Equipment Important to Safety for Nuclear Power Plants," dated April 7,1988, regarding written Justification for Continued Operation.

This letter does not reanire any response. However, your evaluation in support of making a finding of operability should be made available for NRC review regarding the demonstration of equipment operability.

Sincerely,

?WM1d[nt:fby Steven A. Varga, Director Division of Reactor Projects - I/II 1 Office of Nuclear Reactor Regulation I cc: See next page

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i Mr. J. A. Tiernan Baltimore Gas & Electric Company Calvert Cliffs Nuclear Power Plant CC:

Mr. John M. Gott, President Calvert County Board of Conmissioners Prince Frederick, Maryland 20768 D. A. Brune, Esq.

General Counsel Baltimore Gas and Electric Company P. O. Box 1475 Baltimore, Maryland 21203 Mr. Jay E. Silberg, Esa.

Shaw, Pittman, Potts and Trowbridge 1800 M Street, NW Washington, DC 20036 Mr. M. E. Bowman, General Supervisor Technical Services Engineering Calvert Cliffs Nuclear Power Plant MD Rts 2 & 4, P. O. Box 1535 Lusby, Maryland 20657-0073 Resident Inspector c/o U.S. Nuclear Regulatory roamission P. O. Box 437 l Lusby, Maryland 20657-0073 l Department of Natural Resources l Energy Administration, Power Plant i Siting Program ATTN: Mr. T. Magette Tawes State Office Building Annapolis, Maryland 21204 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406