ML19296D978

Forwards Fire Protection Review for Items 3.2.4,ventilation Duct Penetrations & 3.2.5/3.2.6,electrical & Piping Penetration Fire Resistance for Facility

ML19296D978
Person / Time
Site:	Calvert Cliffs
Issue date:	02/29/1980
From:	Randy Hall BROOKHAVEN NATIONAL LABORATORY
To:	Ferguson R Office of Nuclear Reactor Regulation
References
NUDOCS 8003140003
Download: ML19296D978 (2)

Text

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_J,,, BROOKHAVEN NATIONAL LABORATORY

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1 .J .J ASSOCIATED UNIVERSITIES, INC.

Upton, New York 11973 Depcrtment of Nuclear Energy (516) 345- 2144 February 29, 1980 Mr. Robert L. Ferguson Plant Systems Branch U.S. Nuclear Regulatory Commission Washington, D.C. 20555 RE: Calvert Cliffs, Fire Protection Review, Item 3.2.4, 3.2.5, and 3.2.6. ,

Dear Bob:

Attached are items 3.2.4, Ventilation Duct Penetrations, and 3.2.5/3.2.6 Electrical and Piping Penetration Fire Resitance for the Calvert Cliffs Nuclear Power Plant.

Respectfully yours,

- W Robert E. Hall, Group Leader Reactor Engineering Analysis REH:EAM:sd attachment cc.: W. Kato wo/att.

T. Lee E. MacDougall V. Panciera p s 003140 OD h

'h CALVERT CLIFFS Fire Protection Review Item 3.2.4 - Ventilation Duct Penetrations SER Section 3.2.4 indicates that the licensee has verified that all ventila-tion duct penetrations of fire barriers are protected with UL or FM listed fire dampers which will close automatically in che event of a fire, and the gaps between the ducts and the barriers are sealed. Fire rating of the dampers will be evaluated and appropriate modifications provided as necesse.y.

By letter dated November 13, 1979, the licensee stated that the fire dampers provided in ventilation duct penetrations of fire barriers are one and one-half hour rated fusible link operated. The licensee has concluded that the rating of each of these dampers is adequate for the fire hazard. The licensee's fire hazard analysis identified ventilation duct penetrations in several more fire barriers in which fire dampers must be installed. Three hour rated fusible link fire dampers will be installed in these ventilation duct penetrations.

We accept the licensee's conclusions regarding the required ratings of fire dampers in the plant and recanmend that the staff accept this item subject to the installation verification. The licensee's response included a drawing de-tail which showed that the installed fire dampers are located adjacent to the fire barrier. . We recanmend that the staff require the licensee to verify that-this method of installation conforms to the conditions of the listing of the -

fire damper by the testing laboratory.

Items 3.2.6 and 3.2.7 - Electrical and Piping Penetration Fire Resistance SER Sections 3.2.6 and 3.2.7 indicate that the licensee will provide results of a standard ASTM E-119 test to demonstrate:

o The adequacy of fire resistance of the Calvert Cliffs Electrical Penetra-tions, and o That piping penetrations have fire-resistance ratings canmensurate with fire hazards on both sides of the barriers.

By letter dated September 14, 1979, the licensee submitted a proposed pene-tration fire test method and criteria. On November 5, 1979, the staff telecopied to the licensee comments and concerns about the proposed test procedure.

By letter dated January 29, 1980, the licensee provided a revised test pro-cedure which included some of the staff's comments and indicated that the proposed test would take place during February,1980. The final results would be provided to the NRC staff in March,1980. The staff reviewed this revised procedure and forwarded its comments and conerns to the licensee.

We will canplete our evaluation following receipt of the test results.