ML20236B280

Requests Encl Draft Request for Addl Info Re Turbine Bldg Fire on 871002 Be Placed in PDR & Lpdr.Request Provided to Util

ML20236B280
Person / Time
Site:	Fort Saint Vrain
Issue date:	10/21/1987
From:	Heitner K NRC
To:	NRC
References
NUDOCS 8710260044
Download: ML20236B280 (2)

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4 Enclosure 1 l 1

Request for Additional Information Fort St. Vrain lurbine Building Fire of j October 2, 1987 l l

1. Provide an evaluation of the fire protection features of the Turbine j Building, including the areawide fire' detection system during this event.

Compare the adequacy of the present manual fire fighting capablility for the areas in which there are hydraulic system components with automatic suppression capability as recommended by the National Fire Protection J Association.

2. Provide an evaluation of the control room ventilation system during this  ;

event. This should include a reevaluation of this system's design basis.

3. Provide an evaluation of the hydraulic system during this event. This  !

evaluation should focus on the hydraulic system as a potential source of '

combustible material. The design of the hydraulic system in proximity to i existing hot surfaces (ignition sources)'should be exaiined. The system l design should be reevaluated to assure that adequate margins exist against q failures caused by transient (impulse) pressure peaks. q a

Each evaluation should specify changes and improvements that PSC plans to make in these areas prior to return to operation. Long tere, improvements should also be discussed. The evaluations should cover changes to system and component design, related Technical Specifications and procedures, and operator training. Changes to supporting maintenance or repair activities should also be identified.

4. Provideasummaryofallmajorsystems,structuresandcomponentsaffected by the fire and the suppression of the fire. Describe the actions taken to assure that whatever damage received by these components does not significantly compromise their ability to perform their design function.

Specific attention should be directed to safety related components, and  !

systems and the high energy lines in the fire area. The examination j should specifically address:

Potential damage to hot high energy lines and components from inundation with cold firewater, and Potential damage to qualified com3onents, systems, and their  ;

materials from fire generated comaustion products, w - - -