ML20038C151
| ML20038C151 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 11/20/1981 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20038C145 | List: |
| References | |
| NUDOCS 8112100161 | |
| Download: ML20038C151 (3) | |
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION g
j WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 45 TO FACILITY OPERATING LICENSE NO. DPR-61 CONNECTICUT YANKEE ATOMIC POWER COMPANY HADDAM NECK PLANT DOCKET NO. 50-213
1.0 INTRODUCTION
By letter dated June 2,1981, Connecticut Yankee Atomic P'ower Company (the licensee) requested an amendment to Facility Operating License No. DPR-61 for the Haddam Neck Plant. This amendment would modify the Technical Specifications to add operability and surveillance testing requirements for fire protection equipment that was added in accordaace with the requirements of Amendment No. 28 to the license dated October 3,19N.
2.0 EVALUATION 2.1 Carbon Dioxide Systems The licensee's proposed Technical Specifications would modify the surveillance requirements for the C0 systems listed in Section 3.22.B.1 by requiring verification at least o$ce per 18 months that all systems components operate properly when manual devices are manually operated and automatic devices are actuated by a simulated signal; and that there is.no blockage in headers and nozzles by conducting a flow test.
This surveillance follows the NRC guidelines and is therefore acceptable.
2.2 Halon 1301 System The licensee's proposed Technical Specifications would require that a Halon 1301 system be operable in the switchgear room, as described'in the Fire Protection Safety Evaluation supporting Amendment. No. 28, dated October 3,1978. At least (7) Halon bottles will be connected and available for service and each bottle shall be at least 92% of full charge weight. The licensee has proposed that within one hour of one of these Halon bottles being found inoperable, a continuous fire watch with backup fire suppression equipment will be established.
The system will be restored to operable status within 14 days, or a Licensee Event Report will be prepared and submitted to the Comission within 30 days. We, therefore, find this modification acceptable.
The proposed surveillance for this Halon 1301 system would requf re that at least once per 6 months the weight and pressure of refillable con-tainers would be checked, and replaced if it shows a net weight of less than 92% or a pressure less than 324 psig. Also, at least once 8112100161 011120'
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per 18 months the modifications would require verifying that all sjstem components operate properly when manual devices are manually operated and automatic devices are actuated by a simulated signal, and assuring that there is no blockage in discharge piping and nozzles by conducting a usual inspection. This surveillance meets NRC guidelines, and is therefore acceptable.
2.3 Fire Water Stations The licensee proposes the addition of five fire water stations to Table 3.22-1 of the Technical Specifications. These are: FHC-5-I+C Corridor, FHC-10-Switchgear Room, FHC-7-Auxiliary Building, FHC Auxiliary Building, FHC-9-Screenwe11 Building. These meet the requirements for additional hose stations listed in the Fire Protection Safety. Evaluation supporting Amendment No. 28, and are, therefore, acceptable.
2.4 Fire Detection Systems Based on requested modifications contained in the Fire Protection Safety Evaluaticn supporting Amendment No. 28, dated October 3,1978c-the licensee proposed to modify its Technical Specifications by adding additional smoke detectors to Table 3.22-2.
It has been determined that the detection zones listed for the Primary Auxiliary Building coincide with the fire zone areas listed in Section 3.1.1 of the October 3,1978 Safety Evaluation.
It is noted that zone 8 is covered by a duct detector in the return duct for the residual heat r'emoval pump cubicles. Also containment has 32 heat detectors installed in addition to the 23 smoke detectors. Based on our previous review, we conclude that these additions are acceptable.
Also, whenever the number of operable smoke / heat detectors is less than the minimum number operable requirement of Table 3.22-2, the licensee proposes t'o' establish, within -one hour a fire watch patrol to inspect the inoperable zone (s) at least once per hour, unless inside the containment, then inspect the containment at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. The operable instrument must be restored to operable status within 14 days, or a Special Report will be submitted to the Commission within 30 days. We find this acceptable.
The licensee's proposed Technical Specifications would also modify the surveillance requirements for the fire detectors that are not accessible during plant operation. These detectors will be demonstrated operable by the performance of a Channel Functional Test during each cold shutdown exceeding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> unless perforned in the previous 6 months. We conclude that this. surveillance schedule is acceptable.
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2.5 Spray / Sprinkler Systems The licensee has proposed the addition of several Spray / Sprinkler systems to Section 3.22.G.1 of the Technical Specifications. The Systems coincide with the recommended modifications listed in the Safety Evaluation accompanying Amendment No. 28, dated October 3, 1978. It is noted that additional heads have been added to the existing system in the Turbine Building to protect the auxiliary boiler room. We find these additions acceptable.
2.6 Facility Staff The 11censee proposes the amendment of specification 6.2.2.F to reflect the requirement of a 5-person fire brigade as mandated in Appendix R to 10 CFR 50. We also find this proposal acceptable.
3.0 ENVIRONMENTAL CONSIDERATION
We have determined that the amendment does not authorize r, change in effluent types or total amounts nor an increase in power level and will not result in any significant environmental impact. Having made this determination, we have further concluded that the amendment '
involves an action which is insignificant from the standpoint of environmental impact and pursuant to 10 CFR 551.5(d)(4) that an environmental impact statement or negative declaration and environ-mental imnact appraisal need not be prepared in connection with the issuance of this amendment.
4.0 CONCLUSION
S We have concluded, based on the consideration discussed above, that:
(1) because the amendment does not involve a significant increase in the probability or consequences of accidents previously c0nsidered and does not involve a significant decrease in a safety margin, the amendment does not invnive a significant hazards consideration, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposc6 manner, and (3) such activities will be conducted ir compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Dated: November 20, 1981 M
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