ML20064L057
| ML20064L057 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Robinson |
| Issue date: | 12/15/1981 |
| From: | Kreger W Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20064E577 | List: |
| References | |
| FOIA-82-389, TASK-2.F.1, TASK-TM NUDOCS 8201200658 | |
| Download: ML20064L057 (2) | |
Text
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',1,. q[,' j NUCLEAR REGUL ATORY COMMISSION WA5mNG WN. D. C. 20555 s..~:;
DEC 151931 Docket No. 50-261 MEP.ORANDUM FOR:
Thomas M. Novak, Assistant Director for Operatina Rc= tors. DSI F R0".:
William E. Kreger. Assistant Director for Radiation Protection. DSI
SUBJECT:
H. B. ROBINSON, UNIT NO. 2, TRANSMITTAL TO LICENSEE OF TECHNICAL EVALUATION OF LICENSEE RESPONSE TO ITEM II.F.1, ATTACHMENT 1, NUREG-0737 The licensee's submittal of March 3,1981, in response to requirements of Item II.F.1-1 of NUREG-0737, was identified as being in deviation with respect to the use of detectors mounted externally and internally to ducts containing potential plant gaseous effluents.
A technical evaluation of these deviations was perfonned by the staff's contractor, EXXON Nuclear Idaho Company, and submitted November 2,1981.
The technical evaluation concludes that a radiation detector mounted ex-ternally to the effluent duct is not sufficient to meet the requirements of Table II.F.1-1 of NUREG-0737 for the upper ranges of noble gas effluents, e.g., 10 to 105 2
uCi/cc.
Similarly, a radiation detector mounted internally
_ to the duct, but not shielded from ambient radiation, is not sufficient to megt the requirements of Table II.F.1-1 for concentrations less than 10 uCi/cc, with the exception that if the detector is responsive only to beta radiation, e.g., a beta scintillation detector, such an arrangement could be considered acceptable.
Our concerns over these deviations have been transmitted through the NRR Operating Reactors Project Manager, who has made several phone calls to the licensee concerning this matter, without a resolution of the deviations.
Since no resolution of the deviations has been made, we request that a copy of the enclosed technical evaluation be forsarded to the licensee with a request for either a technical justification of his position or a change of that position by way of a commitment to meet the requirements of Table II.F.1-1 of NUREG-0737.
Alternatively, the licensee can resolve the deviation for the high range detector and Table II.F.1-1 by preparing a procedure through which the thickness of the duct or pipe may be taken k?4
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Thomas l'. floval DEC 15198; into account when neasuring low-energy ganma radiation; however resulting from radioactive decay following reactor shutdou
, such a Original tuned by W. c. lirer.cr Willicn E. Kreger, Assistant Director for Eadiation Protection Division of Systens Integration
Enclosure:
Technical Evaluation cc:
R. itattson D. Eisenhut R. Capra i
S. Yarga V. Gaanill R. Dangart l
W. Ross E. Conner j
i B. Barnhart J.. Lee P. Stoddart
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