ML20212D214
| ML20212D214 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 02/25/1987 |
| From: | Fay C WISCONSIN ELECTRIC POWER CO. |
| To: | Lear G NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| CON-NRC-87-20 VPNPD-87-86, NUDOCS 8703040083 | |
| Download: ML20212D214 (3) | |
Text
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IHSC00 Sin Electnc eowca couraur 231 W. MICHIGAN, P 0. B0X 2046. MILWAUKEE, WI $3201 VPNPD-87-86 NRC-87-20 February 25, 1987 Document Control Desk U. S. NUCLEAR REGULATORY COMMISSION Washington, DC 20555 Attention:
Mr. George Lear, Project Director PWR Project Directorate 1 Gentlemen:
DOCKET NOS. 50-266 AND 50-301 APPENDIX R COMPLIANCE POINT BEACH NUCLEAR PLANT UNITS 1 AND 2 This is to confirm our notification to the NRC Resident Inspector on February 19, 1987, of the following items identified as a result of our reverification of the Appendix R safe shutdown capability for the Point Beach Nuclear Plant.
1.
Primary system monitoring instruments are powered from plant batteries which have been determined to have sufficient capacity to power normal requirements for approximately eight hours.
A battery charger must be in or restored to service in order to maintain equipment operability for the 72-hour loss of offsite power requirement of Appendix R.
A total of three battery chargers are provided.
The A train battery charger power supply cables are located in Fire Zone 142.
The B train battery charger power supply cables are located in Fire Zone 187, which is separated adequately from Fire Zone 142.
However, the power source to the motor control center that provides B train battery charger power is also located in Fire Zone 142.
Thus, the battery charger power cable installation in Fire Zone 142 does not satisfy the 20-foot separation requirements of Appendix R.
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Document Control Desk' February 25, 1987 Page-2 We have initiated a' modification request to relocate and wrap within Fire Zone 142 or relocate outside'of Fire Zone 142 the A train power supply to the swing battery-charger.
We expect to complete this modification by June 1, 1987.
As an interim measure, we have issued.a repair procedure-to be implemented should the power supplies to the battery chargers be lost due to a fire in Fire Zone 142.
This procedure will replace the cable between the motor control y
center and the contactor which feeds the swing battery charger.
2.
Redundant channels of instrument bus power cables are located in the auxiliary feedwater pump room in a manner such that the 20-foot separation requirements of Appendix R are not satisfied.
W'e have initiated a modification request to wrap one channel of instrument power cables for each unit in a one-hour fire barrier to comply with Appendix R,Section III.G.2.c.
We expect to have this modification r
completed by April 3, 1987.
The cables are routed in conduits, and the zone is provided with a single active-failure-proof automatic Halon fire-suppression system.
Early warning smoke detectors and a redundant system of heat detectors are also provided.
These measures are considered to provide adequate compensatory protection.
L 3.
Redundant reactor coolant system hot and cold leg temperature instrument cables are routed in conduit which does not meet the 20-foot separation requirements of Appendix R at El. 8' of Unit-1 containment.
A modification request has been initiated which will wrap one channel of this instrumentation with a one-half-hour-rated fire barrier up to the point at which the 20-foot horizontal separation requirement is met.
This is consistent with other in-containment barrier requirements.
Since the cables are routed in conduit at that elevation, l
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- February 25, 1987 Page 3-photoelectric smoke detection is provided around the periphery of the ceiling, and combustible loading is very light, no additional interim compensatory measures are considered necessary.
If you have any questions, please contact us.
Very trul
- yours, hht C. W. Fay Vice President-Nuclear cc:
Resident Inspector Regional Administrator-Region III i
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