ML18136A393

Forwards Project Status Summary Re Amends 53 & 54 to Ols, Requiring Facility Mods for Fire Protection,& Design Descriptions of Four Mods.Final Installation of Modified Breathing Air Filling Station Will Be Completed by Apr 1980

ML18136A393
Person / Time
Site:	Surry
Issue date:	01/14/1980
From:	Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Harold Denton Office of Nuclear Reactor Regulation
References
354G-061478, 354G-61478, NUDOCS 8001170275
Download: ML18136A393 (7)

Text

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• i VIRGINIA ELECTRIC AND POWER COMPANY RrcHMOND,VrRGrNrA 23261 January 14, 1980 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attention:

Mr. Albert Schwencer, Chief Operating Reactors Branch No. 1 Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C.

20555

Dear Mr. Denton:

Serial No. 354G/061478 PO/SWB:smv Docket Nos:

50-280 50-281 License Nos:

DPR-32 DPR-37 SURRY POWER STATION FIRE PROTECTION MODIFICATIONS Ammendment Nos. 54 and 53 to the Surry Power facility modifications for fire protection.

the Project Status Summary.

In addition, modifications are attached per your request.

Station Operating License require Attached for your information is design descriptions of four (4)

In general, design and implementation progress is consistent with the target dates however, final installation of the modified breathing air filling sta-tion (item 3.1.3) is now expected to be completed by April, 1980.

The design of the filling system is complete and a design description is attached.

Further, it has been noted that the target date of January, 1980 for a revision to the technical specification [item 3.1.30 (1)] is in error.

This technical speci-fication will require at least one charging pump from the opposite unit to be available at all times during operation of either unit.

This requirement will be incorporated in the technical specifications when the charging pump cross connect modification is completed.

A proposed technical specification will be submitted at the end of January which meets the requirement of item 3.1.30 (2).

We will continue to inform you of our progress in implementing the require-ments and will be glad to answer any questions you may have.

SWB/smv:3B22 Attachment cc:

Mr. James P. O'Reilly, Director Office of Inspection and Enforcement Region II Very truly yours, Z?i. )/)/?.,d7-atctnp/

C. M. Stallings Vice President - Power Supply And Production Operations 11,,olt \\

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1. 5 Safe Shutdown Circuitr.y

1. 6 Combustibles

1. 7 Charcoal Filters 111111 1.8 Emergency Lighting Il U!Dlill"'""

1. 9 Fire Detection Systems 1.10 Fire Barriers 1.11 -re Doors 1111111

, 1.12 ire Dampers 11111111111111111 I

1.13 Fire Extinguishers.

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1.158 Oil Collection Systems

1. 16 Gae Suppression Systems i.17 Hose Nozzles 1.18 llose Stations iunnnnIIITlllllITII.., **m 6

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1.19 Hydrogen Lines

l. 20 Hose Foam Carts 1111111

1. 21 Hydrants I. 22 Valve Supervision

1. 23 Monitoring Panels

1. 24 Penetrations 11111111 1.25 Safe Shutdown 111111111

1. 26 Water Suppress ion Systems

1. 27 ~ntilation System

1. 28

,lre Detection System Power 1.29 Water Spray Shields 1.30 Technical Specifications 2.1 Auxiliary Boiler Room 2.2 Fire Dampers 2.3 Safe Shutdown 2.4 Charcoal Filter Hazard 2.5 In-Situ Testing KEY

.. 1, Beginning of bar represents project start *date, s. Asterisk ir indicates*the"d"ate of complete oulimittal of rnqult-e,I infor1nntio11,

2.

End of bar represents project target completion date,

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Delta 6 indicates the date of partial submittal of required informntian,

( xssUE DATE:

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Shaded portion represents percent complete, Jan.

4, Absenc~ of block indicates project has not been started,

ATTACHMENT 2 3.1.2 AIR FLOW DETECTORS The Surry Power Station has four Class IE safety-related 125 vdc bat-tery systems.

The four batteries are located in four separate, totally enclosed rooms.

Three of the rooms are contained within the service building, the fourth is located in the turbine building.

All four of the battery rooms are supplied air from the s~rvice building ventila-

. tion system via individual air ducts.

The intent of the air flqw is to remove hydrogen gas generated during the battery.charging process.

The Surry Fire Protection Safety Evaluation Report, issued September 19, 1979, by the NRC, identified loss of air flow and resulting hydrogen gas concentration build up as a safety-related fire hazard.

To detect the loss of this* air flow, flow switches will be added to ventilation ducts that supply air to each of the battery rooms.

The air flow switches will be wired to alarm inside the control room for continuous monitoring capability.

The alarm system will contain both audio. and visual indicators to insure prompt.recognition in case of air flow.loss.

The flow swi*tch setpoint will be positioned to alarm at a flow decreas-ing below 185 cfm.

Setpoint accuracy is plus or minus ten percent.pro-ducing a minimum possible flow of 166.5 cfm.

At this flow rate, room air will be changed at a rate that is 60 percent greater than the mini-mum acceptable level.

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page 2 of 5 QA CAT ]lL DJA(:-.RAM CLIENT VE. P6) flOvJ

'DE TE.ClORS PROJECT* SURRY J.O. NO. I 2.3 4/,,,. l.fG (D ISSUED BY AND Pcwi:::i~ (.'), DATE NUMBER i-------+-----~-----1-----~----~---~ 12 rJ Lh,. 4 o - E. 1<s: - I DATE

3.1.3 BREATHING APPARATUS Figure I is a sketch of a proposed breathing air charging system.

The compressor is a Bauer breathing air compressor model KA-15-3.!l--E3H rated at 34 cfm at 5,000 psi.

An automatic condensate drain will remove the moisture.

The Purification System will be a Bauer model Dual P-5 with 6 chambers.

The quality of the compressed and purified air will corre-spond to U.S. Navy Diving Standards.

The storage bottle system.wil.l be two racks of three bottles each.

The bottles are DOT certified and have a capacity of 360 cubic feet* each and charged to 3500 psi.*

The system.working pressure will be 3500 psi and the compressor controls set accordingly.

The compressor is actually two independent*compressors of 17 cfm capac-ity driven by one motor and mounted on one platform.

One or both com-pressors may be utilized by changing the drive belt arrangement.

This arrangement.Provides a redundant capability.

Ducting will be utilized to draw air from outside the building to the compressor intake.

A water tank sized to support four cylinders during air changing will be provided.

page 3 of 5

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FLOOR DRAINS, DIKES, AND CURBS (1)

Lube Oil Conditioner Catch Basin A concrete dike eight (8) inches wide and ten (10) inches high will be built around the lube oil conditioner and the lube oil conditioner pump and piping.

The catch basin will hold the contents of the lube oil conditioner (1083 gallons) plus ten (10) percent of that volume for containment of fire suppression water.

The catch basin capacity is approximately 1500 gallons.

(2)

Diesel.Generator Rooms Catch Basins A concrete dike eight (8) inches wide.and sixteen (16) inches high will be built around the diesel fuel oil day tank.

The day tank holds 550. gallons of fuel oil.

The catch basin will hold approximately 800 gallons.

To contain an oil spill from the 550 gallon oil tank in the base of the diesel generator and the diesel generator lubricating oil (465 gallons),!-,;" thick steel covers will be bolted over the drains.

These covers will be sealed with gaskets.

In addition, a 3 inch concrete dike will keep the oil from running into the turbine building hallway.

(3)

Diesel Driven Fire Pump Oil Tank Dike A concrete dike eight (8) inches wide and ten (10) inches high will be built around the diesel driven fire pump oil tank dike.

The tank holds 400 gallons of fuel oil.

The catch basin will contain approxi-mately 450 gallons.

In addition,!-,; inch thick steel covers will be bolted over the drains to keep fire from spreading via the drain system.

VAf..VE SUPERVISION All valves controlling the flow of fire suppression water that are not presently electrically *supervised will be main-tained in the open position with chains and break away locks.

page 5 of 5