ML20217Q620
| ML20217Q620 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 08/26/1997 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20217Q618 | List: |
| References | |
| NUDOCS 9709030275 | |
| Download: ML20217Q620 (3) | |
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REALTOR REGULATION RELATED TO AMENDMENT NO. 207 TO FACILITY OPERATING LICENSE NO. OPR-65 NORTHEAST NUCLEAR ENERGY COMPANY IjiE CONNECTICUT LIGHT AND POWER COMPANY THE WESTERN MASSACHUSETTS ELECTRIC COMPANY MILLSTONE NUCLEAR POWER STATION. UNIT NO. 2 DOCKET NO. 50-336
1.0 INTRODUCTION
By letter dated November 20, 1995, the Northeast Nuclear Energy Company, et al. (the licensee) submitted I request for changes to the Millstone Nuclear Power Station, Unit No. 2, Technical Specifications (TSs). The changes to TS Table 3.3-12 would provide clarifications to the applicability and action statements of the radioactive liquid effluent monitoring instrumentation.
Specifically, two changes are being proposed for the steam generator (SG) blowdown monitors. The applicability requirement in TS Table 3.3-12 is currently for Modes 1 through 6 which will change to Modes I through 4.
The proposed change leflects when the SG blowdown system is in service. The second change clarifies TS Table 3.3-12, Action 2, indicating that when the minimum number of inst.ument channels are not operable and effluent releases via the affected pathway are suspended, no sampling is required.
The third change being proposed is a clarification to the applicability statement in TS Table 3.3-12 for the Condensate Polishing Facility (CPF) Waste Neutralizing Sump radiation monitors indicating that a mr. dor is only required to be operable when its associated pathway is in use.
2.0 BACKGROUND
An NRC team inspection was conducted in late May and early June 1995 by the
- pecial Inspection Branch of the Office of Nuclear Reactor Regulation, assisted by Region I and II, following an extended outage at the Millstone Nuclear Power Station, Unit No. 2.
The inspection report, "NRC Inspection
' Report 5G-336/95-201, Millstone Nuclear Power Station Unit 2, Restart Assessment Team Inspection," dated July 21, 1995, identified seven deficiencies. One of the deficiencies, 95-201-5, was improper TS interpretation of the requirements for the SG blowdown effluent radiation monitors. The proposed TS changes are in response to the inspection report 9709030275 970826
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PDR ADOCK 05000336 P
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.. finding (95-2CJ-5) to provide clarification to the radioactive liquid effluent monitoring instrumentation TSs which will limit the need for future TS interpretations in this area.
3.0 EVALUATION
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The purpose of the SG blowdown system is to maintain the SG chemistry within o>erating limits.
It is used on a regular basis during operation in Modes 1 tirough 4 to control the buildup of sludge and the removal of unwanted contaminants due to SG or condenser tube leaks.
In Modes 5 and 6, the SG blowdown system is not used due to the reduced temperatures and pressures in these modes of operation.
Chemistry control is maintained by utilizing the SG
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pumpdown sysMm involving batch discharges. The procedures utilized for the Modes 5 and 6 evolution require that sampling be performed prior to discharging any effluents and the radiation monitoring instrumentation is not required to be operable.
Therefore, on the basis of the information provided, the NRC staff has determined that the proposed change to the TS Table 3.3-12 applicability statement for the SG blowdown monitors from Modes 1 through 6 to Modes 1 through 4 is acceptable.
In addition, a proposed clarification of TS
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Table 3.3-12, Action 2, indicates that when the minimum number of instr ment channels are not operable and effluent releases via the affected pathway are suspended, no sampling is required. This clarification is also acceptable since it indicates no sampling is required if there are no releases.
As previously noted, the third proposed change is a clarification to the applicability statement in TS Table 3.3-12 for the CPF waste neutralizing sump radiation monitors.
The CPF ut0.zes ion exchangers for purification and condenser vacuum for deaeration to clean up the condensate before it is used as feedwater for the SGs. The proposed change makes it clear that a monitor is only required to be operable when its associated pathway is in use.
Therefore, the NRC staff has determined that the proposed change to TS Table 3.3-12 for the CPF waste neutralizing sump radiation monitors provides needed clarification and is acceptable.
4.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Connecticut State official was notified of the proposed issuance of the amendment. The State official had no comments.
5.0 ENVIRONMENTAL CONSIDERATION
The amendment changes a requirement with respect to installation or use of a "acility component located within the restricted area as defined in 10 CFR Part 20.
The amendment also relates to changes in record keeping, reporting, or administrative procedures or requirements. The NRC staff has determined that the 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 Commission has previcusly issued a a
a, consideration, and there has been no public comment on such finding (60 FR 65683 dated December 20, 1995.
eligibility criteria for categorical) exclusion set forth inAccordingly, the amendment meets the 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.22(b no environmental impact statement or environmental assessment need be pr)epared in connection with the issuance of tha amendment.
- r. 0 CONCLUSION k
The Commission has concluded, based on the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.
Principal Contributor: D. Mcdonald Date: August 26, 1997
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