ML20086M613
| ML20086M613 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 02/02/1984 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20086M606 | List: |
| References | |
| TAC-52663, TAC-52664, NUDOCS 8402160594 | |
| Download: ML20086M613 (2) | |
Text
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15.3 _ LIMITING CONDITIONS FOR OPERATION
,a 15.3.1 REACTOR COOLANT SYSTEM Applicability Applies to the operating status of the Reactor Coolant System.
Objective To specify.those limiting conditions for operation of the Reactor Coolant System which must be met to ensure safe reactor operation.
Specification A.
OPERATIONAL COMPONENTS 1.
Coolant Pumps
- I a.
At least one reactor coolant pump or the residual heat removal system shall be in operation when a reduction is made in the boron concentration of the reactor coolant.
b.
When the reactor is critical and above 1% of rated power except for natural circulation tests, at least one reactor coolant pump shall be in operation.
c.
(1) Reactor power shall not be maintained above 10% of rated power unless both reactor coolant pumps are in operation.
(2)
If either reactor coolant pump ceases operating, immediate power reduction,shall be initiated under administrative con-trol as necessary to reduce power to less than 10% of rated power.
2.
- I a.
One steam generator shall be operable whenever the average reactor coolant temperature is above 350 F.
3.
Components Required for Redundant Decay Heat Removal Capability
- l a.
Reactor coolant temperature less than 350 F and greater than 140 F.
(1) At least two of the decay heat removal methods listed shall be operable.
(a) Reactor Coolant Loop A, its associated steam generator i
and either reactor coolant pump (b) Reactor Coolant Loop B, its associated steam generator and either reactor coolant pump
- Applicable only when one or more fuel assemblies are in the reactor vessel.
l 15.3.1-1 Unit 1 - Amendment No. 44, 66, 82 Unit 2 - Amendment No. 49, 71, 86 ENWD2160594 8402(M2 PDR ADOCK 05000266 P
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UNITED STATES 8
NUCLEAR REGULATORY COMMISSION 5
j WASHINGTON, D. C. 20555
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,or SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUP!0RTING AMENDMENT N0. 82TO FACILITY OPERATING LICENSE NO. DPR-24 AND AMENDMENT NO. 86 TO FACILITY OPERATING LICENSE N0. DPR-27 WISCONSIN ELECTRIC POWER COMPANY POINT BEACH NUCLEAR PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-266 AND 50-301 Introduction On October 25, 1983 Wisconsin Electric Power Company (licensee) requested changes to the Technical Specif.ications for the Point Beach Nuclear Plant Units 1 and 2.
The proposed char.ges clarify the intent of the Technical Specifications relating to limiting conditions-for operatio'i (LCOs) for reactor coolant pumps, steam generators and decay heat removal systems.
Since the function of these systems is to remove heat generated by fuel assembliss in the reactor core during both power operation and after shut-down (removal of decay heat), the licensee has proposed changes to clarify that the LCOs for these systems only apply when one or more fuel assemblies are in the reactor vessel.
'8 Discussion and Evaluation On November 8,1982 the NRC issued amendments to the licenses for Point Beach Nuclear Plant Units 1 and 2.
These amendments modified the Technical Specifications for these license to incorporate LCOs to insure redundancy for decay heat removal capability in all modes of operation. The modes of operation considered by these LCO's were power operation, low power operation (phy*,1cs testing), hot shutdown, cold shutdown and refueling. The intent of these technical specification changes was to upgrade the existing technical specifications to ensure redundant capability for decay heat removal would exist during all of the above operating conditions such that if a single active component failure in any of the decay heat removal systems were to occur, the ability to keep the core cooled would not be compromised.
Implicit in the intent of the LCOs was that decay heat was being generated.
With no decay heat being generated, i.e., no previously irradiated fuel modules in the reactor vessel, the reactor coolant pumps together with their associated steam generators, coolant loops and the residual heat renoval loops (pumps, motor-operated valves and associated heat exchangers) would not be required, as it would no longer be necessary to remove decay heat.
Since the LCOs as written describe applicable modes of operation based on expected temperature and pressure in the reactor coolant system and do not
2-s ' 'r presuppose that fuel is in the reactor vessel, the licensee has proposed changes to the LCOs relating to decay heat removal to clarify that they are only applicable when fuel is in the reactor vessel. They would not, for example, he applicable when the entire core is off loaded in the spent fuel pool.
Based upon tne considerations discussed above, we agree with the licensee's determination that the LCOs relating to decay heat removal capability are only applicable when one or more fuel assemblies are in the reactor vessel and therefore, find the proposed changes to the Technical Specifications to'be acceptable.
Environmental Consideration We have determined that the amendments do not authorize a 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 amendments involve an action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR 951.5(d)(4), that an environmental impact statement or negative declara-tion and environmental impact appraisal need not be prepared in connection with the issuance of the amendments.
Conclusion We have concluded, based on the considerations discussed above, that:
8 will not be endangered by operation in the proposed manner, and (2) public (1) there is reasonable assurance that the health and safety of the such activities will be conducted in compliance with the Commission's regulations and the issuance of these amendments will not be inimical to the common defense and security or to the health and safety of the public.
Date:
February 2,1964 Principal Contributors:
T. Colburn v
.,