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VIRGINIA POWER NORTH ANNA POWER STATION UNIT NOS. 1 AND 2 TECHNICAL SUPPORT CENTER AND LOCAL EMERGENCY OPERATIONS FACILITY NRC Confirmatory Order dated June 14, | NuchtwCpemnomDrputment 9 | ||
t | |||
The halon fire suppression system in the LEOF is designed to protect the LEOF computer. | .veerresWent itsr of,cesox26666 N"chur @rn*bns onejameswrerskra achmong Yugma23261 July 31, 1985-vuesmuroeven Mr. Harold R. Denton, Director Serial No. 85-557 Office of Nuclear Reactor Regulation N0/DAS:acm Attn: Mr. Edward J. Butcher, Acting Chief Docket Nos. 50-338 Operating Reactors Branch No. 3 50-339 Division of Licensing License Nos. NPF-4 U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C. 20555 Gentlemen: | ||
computer, is on a separate schedule, the halon fire suppression system is not presently required for LEOF operability. Likewise, HVAC system testing to ensure adequate flow to the LEOF computer room is not presently required for LEOF operability. Both these items are required to and will be completed on a schedule consistent with the SPDS schedule. | VIRGINIA POWER NORTH ANNA POWER STATION UNIT NOS. 1 AND 2 TECHNICAL SUPPORT CENTER AND LOCAL EMERGENCY OPERATIONS FACILITY NRC Confirmatory Order dated June 14, 1984, on emergency response capabilities requires that the Technical Support Center (TSC) and Local Emergency Operations Facility (LEOF), except for data communications, be fully functional by July 31, 1985. Data communications for the TSC and LEOF is on a schedule consistent with the Safety Parameter Display System (SPDS) schedule. The purpose of this letter is to notify you that the TSC and LEOF are fully functional and available for use, although several | ||
HVAC testing includes confirmation of the efficiency of the High Efficiency Particulate Absorber (HEPA) filter. | -support systems will not be totally complete until after the July 31, 1985, commitment date. | ||
Additionally, we have been notified by the manufacturer, that the factory calibration sources for the fixed radiciodine monitors for both the TSC 8508060220 8 | The remaining items to be completed include testing of the halon fire suppression system, calibration of the radiation monitoring system and testing of a limited portion of the heating, ventilation and air conditioning (HVAC) system. | ||
The halon fire suppression system in the LEOF is designed to protect the LEOF computer. | |||
Since LEOF data communications, which includes the I | |||
computer, is on a separate schedule, the halon fire suppression system is not presently required for LEOF operability. | |||
Likewise, HVAC system testing to ensure adequate flow to the LEOF computer room is not presently required for LEOF operability. Both these items are required to and will be completed on a schedule consistent with the SPDS schedule. | |||
HVAC testing includes confirmation of the efficiency of the High Efficiency Particulate Absorber (HEPA) filter. | |||
During HEPA filter testing of the LEOF HVAC, the efficiency was determined to be 97% in lieu of the design specified 99.97%. The LEOF HEPA filter will be replaced as expeditiously as practical to ensure specified efficiency is met. We do not consider this minor design deviation to impact the overall functionability of the LEOF. | |||
Additionally, we have been notified by the manufacturer, that the factory calibration sources for the fixed radiciodine monitors for both the TSC 8508060220 8 1 | |||
PDR ADOCK 05 338 p | |||
e eDR | |||
. q | . q.. | ||
VIRGINIA POWER and LEOF were in error. The calibration sources | VIRGINIA POWER have recently been' and LEOF were in error. | ||
The calibration sources recertified by the manufacturer and we will properly calibrate these monitors. | |||
Until the monitors have been properly calibrated, portable monitoring instrumentation and air sampling capabilities will be provided in both the TSC and LEOF in the event of an emergency. | |||
If you have any questions regarding the functional status of the TSC or LEOF, please contact us. | If you have any questions regarding the functional status of the TSC or LEOF, please contact us. | ||
Very truly yours, | Very truly yours, | ||
\\ | |||
W | W j | ||
W. LDSthat w | W. LDSthat w | ||
cc: | cc: | ||
Dr. J. Nelson Grace Regional Administrator NRC Region II Mr. M. W. Branch NRC Resident Inspector North Anna Pover Station 9 | |||
- - - -.}} | |||
Latest revision as of 10:05, 12 December 2024
| ML20133B602 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/31/1985 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Butcher E, Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 85-557, NUDOCS 8508060220 | |
| Download: ML20133B602 (2) | |
Text
EtLwtL Smrar -
NuchtwCpemnomDrputment 9
t
.veerresWent itsr of,cesox26666 N"chur @rn*bns onejameswrerskra achmong Yugma23261 July 31, 1985-vuesmuroeven Mr. Harold R. Denton, Director Serial No.85-557 Office of Nuclear Reactor Regulation N0/DAS:acm Attn: Mr. Edward J. Butcher, Acting Chief Docket Nos. 50-338 Operating Reactors Branch No. 3 50-339 Division of Licensing License Nos. NPF-4 U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C. 20555 Gentlemen:
VIRGINIA POWER NORTH ANNA POWER STATION UNIT NOS. 1 AND 2 TECHNICAL SUPPORT CENTER AND LOCAL EMERGENCY OPERATIONS FACILITY NRC Confirmatory Order dated June 14, 1984, on emergency response capabilities requires that the Technical Support Center (TSC) and Local Emergency Operations Facility (LEOF), except for data communications, be fully functional by July 31, 1985. Data communications for the TSC and LEOF is on a schedule consistent with the Safety Parameter Display System (SPDS) schedule. The purpose of this letter is to notify you that the TSC and LEOF are fully functional and available for use, although several
-support systems will not be totally complete until after the July 31, 1985, commitment date.
The remaining items to be completed include testing of the halon fire suppression system, calibration of the radiation monitoring system and testing of a limited portion of the heating, ventilation and air conditioning (HVAC) system.
The halon fire suppression system in the LEOF is designed to protect the LEOF computer.
Since LEOF data communications, which includes the I
computer, is on a separate schedule, the halon fire suppression system is not presently required for LEOF operability.
Likewise, HVAC system testing to ensure adequate flow to the LEOF computer room is not presently required for LEOF operability. Both these items are required to and will be completed on a schedule consistent with the SPDS schedule.
HVAC testing includes confirmation of the efficiency of the High Efficiency Particulate Absorber (HEPA) filter.
During HEPA filter testing of the LEOF HVAC, the efficiency was determined to be 97% in lieu of the design specified 99.97%. The LEOF HEPA filter will be replaced as expeditiously as practical to ensure specified efficiency is met. We do not consider this minor design deviation to impact the overall functionability of the LEOF.
Additionally, we have been notified by the manufacturer, that the factory calibration sources for the fixed radiciodine monitors for both the TSC 8508060220 8 1
PDR ADOCK 05 338 p
e eDR
. q..
VIRGINIA POWER have recently been' and LEOF were in error.
The calibration sources recertified by the manufacturer and we will properly calibrate these monitors.
Until the monitors have been properly calibrated, portable monitoring instrumentation and air sampling capabilities will be provided in both the TSC and LEOF in the event of an emergency.
If you have any questions regarding the functional status of the TSC or LEOF, please contact us.
Very truly yours,
\\
W j
W. LDSthat w
cc:
Dr. J. Nelson Grace Regional Administrator NRC Region II Mr. M. W. Branch NRC Resident Inspector North Anna Pover Station 9
- - - -.