ML20034A267
| ML20034A267 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 04/11/1990 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20034A266 | List: |
| References | |
| NUDOCS 9004200640 | |
| Download: ML20034A267 (2) | |
Text
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UNITED STATES y
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iLEAR REGULATORY COMMISSION I
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO.
"6 TO FACILITY OPERATING LICENSE NO. DPR-59 i
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POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT l
DOCKET NO. 50 333 i
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l-l INTRODUCTION By letter dated January 16, 1990, the Power Authority of the State of New York.
I (PASNY or the licensee), requested changes to the Technical Specifications (TS) for the James A. FitzPatrick Nuclear Power Plant. The changes would modify Surveillance Requirement 4.11.B.2 (which requires that the temperature i
indicator controllers be calibrated once per operating cycle) by replacing
" Temperature indicator controllers" with "Each unit cooler's temperature control instrument." The effect of the change is to require that the instrumentation, rather than the temperature indicator controllers, be
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calibrated once per operating cycle.
DESCRIPTION L
1 The Crescent Area Unit Coolers are air-to-water heat exchangers and fans I
which are used to control the air temperature in the crescent areas by circulating air in the crescent area across the heat exchanger tubes. The beat is transferred to the Service Water System normally, or'to the Eir.argency Service Water System in the event of failure of the Service Water System..
There are ten coolers mounted in various locations in the two crescent areas.
In the existing arrangement, service water ficw through each cooler is controlled by a pneumatic temperature control valve (TCV) located at the outlet of each cooler. A signal from the respective temperature indicator controller (TIC) regulates the positior of the TCV such that when room air-temperature increases, the TCV opens to increase the cooling water flow and, hence, the amount of heat withdrawn from the air by the coolers. The fans operate continously.
Conversely, the TCV throttles toward the closed position when room air
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temperature decreases. When little or no air cooling is needed, the resulting low cooling water flow has caused silt to accumulate in the service water piping. This silt accumulation limits the heat transfer rate of the cooler.
To reduce this potential problem, the licensee is modifying the operation of the coolers such that service water flow-is constant and a new temperature control' switch (TCS) will be used to cycle the fans on and off in response to changes in cooling requirements. The high temperature alarm function is retained.
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The cooler modification is designed to improve the reliability of the crescent area coolers and restore their capacity and ability to perform their intended function in the event they are needed when the Emergency Core Cooling System equipment, located in the area, is operating. The only effect on the TS is to reflect the physical change to the equipment in the plant from " temperature indicator cor. trollers" to " temperature instrumentation" in the surveillance test requirement.
The testing frequency remains unchanged. Therefore, the proposed TS charge does not affect the conclusions reached in the licensee's Final Safety Analysis Report or the plant Safety Evaluation Report generated by the NRC.
Based on this analysis, the staff finds the proposed change acceptable.
ENVIRONMENTAL CONSIDERATION This amendment involves a change to a surveillance requirement. The staff has determined that this amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite and that there is no significant increase in individual or cumulative occupational radiation exposure. The Comission has previously issued a proposed finding that this amendment involves no significant hazards consideration and there has been no public coment on such finding.
Accordingly, this amendments meets the eligibility criteria for. categorical exclusionsetforthin10CFRSec51.22(c)(g). Pursuantto10CFR51.22(b)no environmental impact statement or environmental assessment need be prepared in connection with the issuance of this amendment.
CONCLUSION Based on the considerations discussed above, the staff concludes that:
(1) there is reasonable assurance that the health and safet not be endangered by operation in the propos'ed manner, (2) y of the public will such activities will be conducted in compliance with the Comissicn's regulations, and (3) the issuance of this amendment #11 not be inimical to the comon defense and security or to the health air safety of the public.
Datw: April 11, 1990 I
PRINCIPAL CONTRIBUTOR:
D. LaBarge
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