ML20071D219
| ML20071D219 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 02/17/1983 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20071D214 | List: |
| References | |
| NUDOCS 8303090264 | |
| Download: ML20071D219 (3) | |
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UNITED STATES h
NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20655 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 75 TO FACILITY OPERATING LICENSE NO. DPR-28 VERMONT YANKEE NUCLEAR POWER CORPORATION
_V_ERMONT YANKEE NUCLEAR POWER STATION DOCKET NO. 50-271 1l0 Introduction By letters dated July 22, 1982, September 27, 1982, and December 7,1982, Vermont Yankee Nuclear Power Corporation (the licensee) proposed changes to the technical specifications related to (1) the action required in the event of low boron concentration for the standby liquid control system (SLCS), end (2) the plant staff organization. We have responded to these requests with a single license amendment.
2.0 Evaluation 2.1 Organizational Chart Update By letter dated September 27, 1982 the licensee proposed revision of the technicel t eer.ifications anscribirg the Vermant Yankee organization.
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.equirements are that te.c Plant healto Phys:cist shall met.t or exceed the qualifications of Regulatory Guide 1.8, Revision 1, Personnel Selection and Training. The proposed technical specifications would permit the Chemistry and Health Physics Supervisor or the Plant Health Physicist to meet this re-quirement. Because the Plant Health Physicist reports to the Chemistry and Health Physics Supervisor, the proposed technical specification would preserve the lines of reporting responsibility, previously approved, and is acceptable.
In addition the September 27, 1982 proposed ravision of the technical spec-ifications describes changes in job titles and groupings of non operational work functions which are purely administrative. These changes 6re acceptable.
The licensee proposed a further revision to the organizational technical specifications by letter dated December 7,1982. The position title of the Assistant Plant Manager was changed to Maintenance Superintendent. Also, it was proposed that any of the three superintendents reporting directly to the Plant Manager could have on-site responsibility for safe.and efficient operation of the facility during the absence of the Plant Manager, providing the' re-sponsibility was delegated in writing. Because each of the three superintendents must meet the requirements of ANSI 1811-1971 with respect to qualifications, this change is considered acceptable.
8303090264 830217 DRADOCK05000g
. 2.2 Action Required For Low Borof ton' entration c
The current technical specifications do not clearly specify the actions to be taken when the standby liquid control system (SLCS) concentration / volume limits are not met. During a recent event (LER 82-03), which involved a boron concentration outside of technical specification limits, confusion existed as to the action required. The NRC Resideat Inspector requested the licensee to propose technical specifications to correct the ambiguity in the existing specifications (Inspection No. 50-271/82-03). The licensee proposed such, technical specificatians by letter Aated. July 22, 1982.
We have reviewed the licensee's proposed technical specifications, as sub-sequently revised and agreed to by the licensee. The action required for boron concentrations outside of limits results in cold shutdown within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, which is consistent with action required in the existing technical specification for SLCS inoperability. Because actions to correct concentration or volume require some time to accomplish, a period of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> will be allowed before the licensee is required to initiate shutdown.
We find that the proposed technical specifications, after modification as discussed above, clarify the requirements and provide sufficient assurance of SLCS boron concentration and volume, and are therefore, acceptable.
2.3 Correction of Errors Two minor typographical errors from previous amendments have also been corrected in this amendment.
3.0 Environmental Considerations We have determined that the amendment does 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 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 impact appraisal need not be prepared in connection with the issuance of this amendment.
4.0 Conclusion We have concluded, based on the considerations discussed above, that:
(1) because the amendment does not involve a significant increase in the probability or consequences of an accident previously evaluated, does not create the possibility of an accident of a type different j
l from any evaluated previously, and does not involve a significant i
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1 reduction in a margin of safety, the amendment does not involve 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 proposed manner, and (3) such activities will be conducted in 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:
February 17, 1983 Principal ~ Contributor:
V. L. Rooney I_