ML20213E471
| ML20213E471 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 07/19/1983 |
| From: | Muller D Office of Nuclear Reactor Regulation |
| To: | Scarano R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| CON-WNP-0602, RTR-REGGD-01.097 NUDOCS 8307270432 | |
| Download: ML20213E471 (4) | |
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DISTRIBUTION:
METB Reading File ADRP Reading File Docket t!o. 50-397 JUL 191983 tiEf*0RAriDUtl FOR: Ross A. Scarano, Director Division of Radiological Safety and Safeg jards Progran Region V FROM:
Daniel R. Muller, Assistant Director for Radiation Protection Division of Systens Integration, NRR S'IBJECT:
14f1P-2 E"ERCEMCY PRFPAREDriESS IMPLEttEF:TATI0fl APPR AISAL -
f'ETEOROLnGY REVIElf Enclosed is a review of the neteorology portion of the Hf!P-2 Enercency Preparedness Inplementation Appraisal. The neteorological neasurenents progran is in accordance with Regulatory Guide 1.97, Revision 3, and should be adequately representative of the site area.
In addition, the applicant has historically demonstrated the capantitty of operating and maintaining this systen so that it produced reliable data.
Ariditional connents regarding the neteorology systen and its use are enclosed.
Procedures for use of neteorological data and accessing alternative sources of information were unavailable for review.
Questions regarding the enclosed connents nay be directed to J. Levine (FTS 492-9433), heteorology Section, Peteorology and Effluent Treatnent Branch, who reviewed the reteorological progran at W!!P-2 for use in energencies.
Original signed by Daniel R. Muller,
Daniel R. f'.uller, Assistant nirector for Radiation Protection Division of Systens Integration Office of fiuclear Reactor Regulation
Enclosure:
As stated cc:
R. I'.attson
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EMERGENCY PREPAREDNESS IMPLEMENTATION APPRAISAL WASHINGTON PUBLIC POWER SUPPLY SYSTEM, UNIT N0. 2 (WPPSS-2) 4.2.1.4 Meteorological Instrumentation The basis for the auditors review of the applicant's meteorological program is included in the criteria set forth in Regulatory Guides 1.23, 1.97 and 1.101, as well as NUREGs -0696, -0654, -0737, and its supple-ment. The applicant has discussed the meteorological monitoring aspects of its emergency operations in Section 11, Revision 3, of the Emergency Plan.
The use of the onsite meteorological data, applied to the offsite dose projections, is described in Section 11.5 of the plan.
The dose projec-tions are made utilizing computer analyses for the 0-10 mile area with a gaussian dispersion model while a puff model is used for making the dose projections between 10 and 50 miles.
At present, no alternate dose pro-jection capability is available if the computer is unavailable.
The auditor reviewed the applicant's meteorology instrumentation, equip-ment maintenance and calibration programs with the applicant.
The meteorological instrumentation provides the basic parameters of wind direction and speed and an estimator of atmospheric stability, using temperature difference with height, needed to perform the dose assessment.
The measurements made on the 240-ft primary tower one-half mile west of the plant are recorded on strip charts in the control room and in the DESICIATTD CRICIUAI, Cartified 3y
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instrument shelter near the base of the tower.
Additional meteorological measurements are available from a 75-ft. backup tower and a 33-ft.
supplemental tower, both of which are onsite and transmit data to the control room.
Daily checks on meteorological equipment operation are made by visits to the primary tower by a technician and will be made through a renote com-puter callup of the systems.
The procedures for accomplishing these checks were not available for review since they are still in preparation.
The siting and exposure of the primary meteorological tower and its instrumentation meet the criteria of Regulatory Guide 1.23 and provide data representative of conditions in the site vicinity, and have his-torically provided a reliable indication of meteorological variables.
Additional meteorological data are also available from the Battelle-Hanford meteorology network and the National Weather Service (NWS) by l
telephone.
We understand that the control room is notified of severe 1
weather by the plant security who are notified directly by the NWS. The procedures which describe the method of notification of the plant security personnel by the NWS and the subsequent e antrol room notification by security of possible severe weather were not yet prepared.
Based on the above findings, improvements in the following matters should be considered.
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- Provide an alternate procedure for dose projection to be used if computer equipment is unavailable.
- Describe procedures to be followed for daily instrument checks and steps taken when onsite wind and/or stability measurements are unavailable.
- Describe procedures for notification of the plant control room by security if the NWS notifies them of possible severe weather in the plant vicinity.
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