ML20137L854

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Lists Items Noted During App R Fire Protection Audit During Wk of 851118 Re Emergency Lighting Capability.Item C Rectified by Installation of Addl Lighting.Forwards Exemption Request for Resolution of Items a & B
ML20137L854
Person / Time
Site: Beaver Valley
Issue date: 01/21/1986
From: Sieber J
DUQUESNE LIGHT CO.
To: Tam P
Office of Nuclear Reactor Regulation
References
NUDOCS 8601280112
Download: ML20137L854 (16)
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Telephone (412) 393-6000 Nuclear Group InSppingport, PA 15077-0004 Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Attn:

Mr. Peter S. Tam, Project Manager Project Directorate No. 2 Division of PWR Licensing-A Washington, DC 20555

Reference:

Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Appendix R - Exemption Request: Emergency Lighting Gentlemen:

During the recent Appendix R - fire protection cudit conducted at BVPS-Unit I

the week of November 18,

1985, the NRC reviewers identified some concerns with our emergency lighting capability.

The following items were noted during the audit and identified as an apparent violation of Section III.J at the exit meeting.

A.-

our use of security perimeter lighting was determined not fully meeting the Rule which requires "at least an 8-hour battery power supply..."

B.

Within the Fire Brigade Room, 2-hour battery powered emergency lighting units are provided.

This room is utilized as an access path and initial staging area for operators performing _the alternate shutdown procedure.

C.

The access pathway from the Turbine deck to the back stairwell via the Clean Shop was identified as lacking emergency lighting.

Item C

above was rectified by installing additional 8-hour battery powered emergency lights in the area of concern.

To resolve items A

and B,

an exemption request has been prepared for your review.

_ Attached is the exemption request with justification to demonstrate that the lighting capability provides an acceptable margin of safety equivalent to the requirements of Section III.J.

In summary, the exemption request (Attachment I) entails allowing for the use of:

1.

Security perimeter lighting for outside yard area access / egress routes.

9601280112 860121 PDR ADOCK 05000 4

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Badvar Valley Powar Station, Unit No. 1 DockSt No. 50-334, Licsnsa No. DPR-66 Appendix R - Emergency Lighting: Exemption Request Page 2 2.

Portable hand-held lighting units for enhancing access / egress pathways.

3.

Two (2)-hour battery powered emergency lighting capability in the Brigade Room.

Pursuant to 10CFR50.12, Duquesne Light Company requests an exemption from the specific requirements of Section III.J of Appendix R

to 10CFR50 as delineated in the attached request for Beaver Valley Power Station, Unit No. 1.

If there are any questions or clarifications in this matter, please contact my office.

Very truly yours,

.L

$4

. D.

Sieber Senior Manager Nuclear Group cc:

Mr. W. M. Troskoski, Resident Inspector U.

S. Nuclear Regulatory Commission Beaver Valley Power Station Shippingport, PA 15077-l U.

S. Nuclear Regulatory Commission c/o Document Management Branch Washington, DC 20555 Director, Safety Evaluation & Control Virginia Electric & Power Company P.O. Box 26666 One James River Plaza Richmond, VA 23261 U.

S. Nuclear Regulatory Commission Office of Inspection and Enforcement Attn:

Dr. Thomas E. Murley, Regional Director Region 1 631 Park Avenue King of Prussia, PA 19406

l ATTACHMENT I to 1/21/86 Submittel EXEMPTION 11.24 Emergency Lighting (See attached Figures 11.24-1 thru 5)

A.

Introduction Per the provisions of 10 CFR50.12, Duquesne Light Company requests exemption from Section III.J of Appendix R to 1C-CFR 50 to the extent that it requires 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> battery powered emergency lighting for access and egress routes to safe shutdown equipment for Beaver Valley Power Station Unit 1.

Specifically, we request exemption for allowing the use of:

1.

Security perimeter lighting-for outside yard area access / egress routes.

2.

Portable hand-held lighting units for enhancing access / egress pathways.

3.

Two (2)-hour battery powered emergency lighting supply capability in the Brigade Room.

B.

Discussion 1.

Security Perimeter Lighting For certain fire scenarios, the operators may be required to follow outdoor pathways to achieve and maintain safe shutdown from outside the control room.

The outdoor

pathways, as denoted on Figure 11.24-2 4

are described below:

Control Room to Emergency Diesel Generator Buildings l

via east yard area.

Control Room to Intake Structure via north yard j

area.

I Across rooftop between the Safeguards Building Stairwell (S-2) to the Service Building (Feedwater I

Regulating Valve Room)

The security perimeter lighting system consists of j

permanently mounted lights on poles and on outside building walls.

This permanent lighting system is l

powered from Motor Control Center MCC-1-37 located in'the Security Guardhouse

which, on loss of offsite power, would be supplied from the Security Diesel Generator (NHS-EG-1).

This emergency diesel generator has a~ fuel supply capable of operating for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

11.24-1

The security perimeter.

lighting circuits powered from MCC-1-37 are not routed through any fire areas where safe shutdown equipment or cables are located.

The transfer circuit that switches power between the normal source and security diesel generator has some dependence in fire areas TB-1 (Turbine Building) and NS-1 (Normal Switchgear) in that a

fire-induced hot short could. cause an overcurrent trip indication of the 480 VAC Bus Breaker 1-4 which blocks the transfer to the security diesel generator.

However, for a fire in these two areas a control room evacuation would not be required.

For all other-fire areas of concern for Appendix R,

the security diesel generator and transfer circuitry are independent.

2-Portable Hand-Held Lights J

Operators performing the alternate safe shutdown procedure are provided with flashlights to enhance the permanently installed emergency lighting systems.

Portable lighting would supplement the fixed emergency lighting systems for access pathways to provide versatility and effectiveness for operators to perform their intended shutdown functions.

The access / egress routes are denoted on Figures 11.24-1 through 5.

3.

Fire Brigade Room (2-hour battery powered supply units)

The Brigade Room is a self-contained enclosure located on the Turbine

deck, adjacent to the Control Room main entrance / exit area (See ' Figure 11.24-2).

The Turbine deck has 8-hour battery powered lighting units installed for access / egress routes around the Brigade Room.

Within the Brigade Room

itself, 2-hour battery powered emergen'cy lighting units were supplied as part of the original design of the room built in 1979 for BTP 9.5-1 considerations.

For the postulated fire scenario requiring immediate control room evacuation, operators performing the alternate shutdown procedure would utilize the Brigade Room as a staging area.

The Nuclear Shift Supervisor (NSS) would brief the operators on job assignments, distribute key rings and procedure

packets, and supply personnel with extra flashlights.

The time duration expected at this staging area would be less than 30 minutes.

C.

Justification 4

1.

Security Perimeter Lighting 2

The security. perimeter lighting system would ' provide emergency outside yard area lighting capability equivalent 11.24-2

l to technical requirements of Section III.J (8-hour battery power supply) based on the following:

a.

The security perimeter lighting system

. including its emergency power supply are independent of fire areas where control room evacuation may be required under the postulated fire scenario.

b.

The Regulatory Effectiveness Review dated August 29, 1985 reviewed the security perimeter lighting and found it exemplary.

c.

The security lighting system provides an acceptable margin of safety equivalent to the technical requirements of Section III.J.

2.

. Portable hand-held lights Use of portable hand-held

~ flashlights should be acceptable for access / egress pathways to enhance the permanently installed 8-hour battery powered units based on the versatility and additional effectiveness provided.

a.

Guidance contained in Generic Letter 85-01 (Section 4.1) references the Illuminating Engineering Society (IES)

Handbook.for the industry standards..

The IES Handbook is a guide which gives considerable latitude with i

regard to' illumination levels and recognizes the acceptability of the use of portable lighting to supplement fixed D.C. units.

b.

Use of portable flashlights for ' access 4

pathways would offer more flexibility with 1

respect to aiming which may be needed for unexpected hazards and any unanticipated.

events.

A 3.

Brigade Room The Brigade Room emergency lighting capability 4

provides an acceptable margin of safety equivalent to the requirements of Section.III.J based on the following:

a.

The effectiveness of the lighting system is s

determined by the ability of the operator to perform.the intended functions.

For the Brigade Room

area, the intended function would be to utilize the room as a staging area where the Nuclear Shift Supervisor would brief the crew, distribute key rings 11.24-3 4

.aa

-As A

and procedure

packets, and supply extra flashlights.

The time expected at this area would be less than 30 minutes.

Therefore, the 2-hour emergency lighting capability in the Brigade Room would be-sufficient for performing the requisite actions.

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    • x emw FIGURE //.2 '/-5 iccwl car cecAt wwct u it.

INTAKE STRUCTURE D C * **

  • 5' BEAVER VAlt.EY PdWER STATION-UNIT i G

SCC'"'" C^tt sex FIRE HAZARDS ANALYSIS oc twoocNcv sAritav uowrino uwt AEVISED 7/ 9 / 8"

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