ML20205K638

Safety Evaluation Supporting Amend 16 to License R-95

ML20205K638
Person / Time
Site:	Rhode Island Atomic Energy Commission
Issue date:	10/20/1988
From:	Office of Nuclear Reactor Regulation
To:
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ML20205K580	List: ML20205K577 ML20205K625 ML20205K638
References
NUDOCS 8811010268
Download: ML20205K638 (2)

Text

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'o UNITED STATES

/ ~g c NUCLEAR REGULATORY COMMISSION g$ , W ASHINGTON, D. C. 20066

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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 16 TO FACILITY OPERATING LICENSE NO. R-95 RHODE ISLAND ATOMIC ENERGY COMMIS$10N DOCKET NO. 50-193

1.0 INTRODUCTION

By letter dated August 5,1988 the Rhode Island Atomic Energy Connission (licensee) requested an arendment to their Technical Specifications (TS).

The TS change requested was to introduce the actual flow rate, which is 14,000 cubic feet per minute (cfm) through the 115 ft, high stack in the reactor building rather than the 4,000 cfm which is called out in the present TS. The i licensee added sore additional fans to the exhaust system since the original '

reactor design, which increased the flow rate to 14,000 cfm but did not revise the TS at that time because the flow rate exceeded the 4 000 cfm. The licensee isnowrequestingarevisiontotheTSbecauseanewbuilding,theCenterfor Atmospheric Chemistry Studies (CACS), will be constructed near the reactor site and the licensee has prepared an analysis using the 14,000 cfm to calculate ,

the dose rates on the new building. ,

2.0 EVALUATION I

The staff has )repared an independent evaluation , based on the material submitted by tie licensee, of the dose on the new CACS building using the methods presented in Meteorology and Atomic Energy (1968), Chapter 7, Section 5.

The results show that possible doses to individuals due to routine releases of Argon-41 should be no more than 3.7 mrem / year. This evaluation conservatively assured the doses result from a continuous effluent plume source, above the CACS roof, with 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a day occupancy of the building, for 365 days a year.

The change to 14,000 cfm in the TS is acceptable since this is the actual flow through the stack and this exhaust rate provides doses at the CACS which are a very small portion of the limits established in 10 CFR 20.105a.

3.0 ENVIRON!! ENTAL CONSIDERAT!0N This amendment involves changes in the installation or use of facility compo-nents located within the restricted area as defined in 10 CFR Part 20 and changes in inspection and surveillance requirements. The staff has deter-mined that the arendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released off-f$k kOS P

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-4 site, and there is no significant increase i.. individual or cumulative occupa-tional radiation exposure. Accordingly, this amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9). Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assess-ment need be prepared in connection with the issuance of this amendment.

4.0 CONCLUSION

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The staff has concluded, based on the considerations discussed above, that:

(1) because the amendment does not involve a significant increase in the pro-bability or consequences of accidents previously evaluated, or create the possibility of a new or different kind of accident from any accident previously evaluated, and does not involve a significant reduction in a margin of safetythere consideration,(2 )the amendment is reasonabledoes not involve assurance a significant that the health and hazards safety of the public will not be endangered by the proposed activities, 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 the health and safety of the public.

5.0 REFERENCES

1.

Memorandum September 29, 1988 from

Subject:

L. J. Cunningham (NRC)

Review of the to Island Rhode T. S. (RIAEC Michaels (NRC),) Building Plan and Dose Effects Onsite Principal Contributors: Joseph R. Levine Theodore S. Michaels Dated: October 20, 1938

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