ML20128D314

Safety Evaluation Supporting Amend 14 to License R-95

ML20128D314
Person / Time
Site:	Rhode Island Atomic Energy Commission
Issue date:	05/10/1985
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20128D284	List: ML20128D280 ML20128D300 ML20128D314
References
NUDOCS 8505280560
Download: ML20128D314 (2)

Text

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SAFETY EVALUATI0ft BY THE

. OFFICE OF NUCLEAR REACTOR REGULATION SUP00PTIPG APENDMP:T NO 14 TO FACILITY LICENSE R-95 PHODE ISLAND ATOMIC ENEPGY C0FMISSION DOCKET NO. 50-193 Introduction Ry a letter dated Aoril 24, 1985, the Rhode Island Atomic Energy Commission requested an amendment to their Technical Specifications that would change

- the range of pH of the secondary coolant from 5.5-7.5 to 5.5-9.0. This change was requested in order for the facility to respond to a change in we+er treatrent by the water company that supplies the secondary coolant water.

Evaluation This change in the pH range of the secondary coolant water is required because the pH of the water entering this facility has been increased by the water company from about 6 to 7.4. The original pH range was established to protect an. aluminum heat exchanger, which was replaced by a type 304 stainless steel heat exchanger. The secondary coolant system'is now composed of a type 304 stainless steel heat exchanger, a redwood cooling tower with a coS rete base, and type 6061 aluminum piping. None of the aluminum piping is embedded. An upper limit of pH 9 is acceptable for the aluminum piping because of its thickness and because of its accessibility for inspection and replacement. As the pressure of the secondary coolant system is higher than the primary system, any leakage that might occur will be from the secondary to the primary system, resulting in no release to the environment of any radioactive e#fluents. Leakage from the secondary system to the environment will not contain any radioactivity.  :

The staff, therefore, concludes that there will be no decrease in any of the safety aspects concerned with monitoring of the liquid or gaseous discharges from reactor operations.

Environmental Consideration This amendment changes requirements with respect to the installation or use of-a facility component located within the restricted area, as defined in 8505290560 850510 PDR ADOCK 05000193 P PDR

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10 CFR Part 20. The amendment involves no significant hazards consideration, there:is no significant change in the types or significant increase in the ' amounts of any effluents that may be released offsite, and there is no significant increase in individual or. cumulative

-- occupational radiation exposure. Accordingly, this amendment meets the elicibility criteria for catecorical exclusion set forth in 10 CFR 51.22

. (c) ? 9) .' Pursuant = to 10 CFR 51.22(b), no environnental impact statement or

. environmental assessment need be prepared in connection with the issuance of this amendment.

Conclusion

= Based on the-foregoing considerations, the staff concludes that the proposed change can be made without undue risk to the health and safety of.the public or operators, and without any significant impact on the environment.

Deted: May 10, 1985

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