ML19290F024

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Forwards Addl Info in Response to Safety Evaluation Item 3.1.13,describing Addl Emergency Communication Sys. Recommends Documentation of Separation of sound-powered Wiring & plant-paging Sys
ML19290F024
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 03/05/1980
From: Randy Hall
BROOKHAVEN NATIONAL LABORATORY
To: Ferguson R
Office of Nuclear Reactor Regulation
References
NUDOCS 8003170466
Download: ML19290F024 (2)


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Upton. New York 11973 Department of Nuc!ect Energy (516) 345- 2144 March 5, 1980 Mr. Robert L. Ferguson Plant Systems Branch U.S. Nuclear Regulatory Commission Washington, D.C. 20555 RE: Calvert Cliffs, Fire Protection Review, Item 3.1.13

Dear Bob:

The attached additional information on item 3.1.13, Emergency Communi-cation, has been requested by Mr. Tim Lee.

This is the final Brookhaven National Laboratory input for the Calvert Cliffs plant at this time.

Respectfully yours,

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

T. Lee M. Levine wo/att E. MacDougall V. Panciera t

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CALVERT CLIFFS Fire Protection Review Item 3.1.13 - Emergency Communication (additional information)

The SER states that communication equipment will be provided which is capable of maintaining communication between the control room and all areas of the plant, including the interior of containment, considering possible damage due to a single fire.

The licensee responded on November 13, 1979 stating an additional communica-tion system will be provided which will be capable of maintaining communica-tions between the centrol room and all areas of the plant including the con-tainment. They further statea that adequate separation between the new system and the existing systems will be provided so that a single fire at any loca-tion cannot disable both systems. On a later submittal (January 11, 1980) the licensee described the proposed new system and enclosed sketches that showed the proposed layout.

The new system provides an adequate extension of the existing sound powered system so that the containment, containment stairways and turbine building are better covered for communications. The containment penetration route shown on the sketch is satisfactory. However, the rest of the routing is not shown; we recommend that the separation of the sound powered wiring and the plant paging system be documented by the licensee and reviewed by the staff.

In. addition, the licensee has not addressed the possibility of a fire des-troying the cabinet in the control room and the conduits from the control room that are common to both the sound powered and the standard page/ party systems.

We recommend that the staff keep this as an open item until the conditions of the SER are met.