ML20031F496
| ML20031F496 | |
| Person / Time | |
|---|---|
| Site: | Westinghouse |
| Issue date: | 09/29/1981 |
| From: | Bidinger G NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | |
| Shared Package | |
| ML20031F491 | List: |
| References | |
| NUDOCS 8110190973 | |
| Download: ML20031F496 (1) | |
Text
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Distribution:
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(Docket File 70-1151
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PUK NMSS r/f FCUP r/f SEP 2 91981 GHBidinger LTyson WTCrow DOCKET N0; 70-1151 APELICANT: Westinghouse Electric Company Columbia, South Carolina SUBJECT.
REVIEW 0F AMEfCHENT APPLICATION DATED JULY 2,1981 AS SUPPLEMENTED JULY 27, 1981, TO MODIFY LICENSE REQUIREMENTS FOR USE OF BOR0 SILICATE-GLA3S RASCHIG RINGS, 0700ll51 A06S I.
Backgroun_d_
s The licensee currently is committed to Regulatory Guide 3.1, "Use of Boro-silicate-Glass Raschig Rings as a Neutron' Absorber in Solutions of Fissile Material." Per the amendment application, the licensee would follow Reg-ulatory Guide 3.1 when Raschig Rings are used as a primary control for nuclear criticality safety. Different controls for Raschig rings as a secondary control for nuclear criticality safety are proposed inithe amend-ment application.
II. Discussion The use of Raschig rings as a secondary control is intended to provide additional assurance of safety in uncontrolled geometry vessels wherein nuclear criticality safety is assured by a primary control, e.g., concen-tration control. The license has proposed to change limits on the chemical environment from a pH of "9-10" to "<ll" and to change the maximum fluoride concentration from "1400 ppm" to "4%."
The Raschig rings will be inspected annually for settling, physical properties, and boron content. The temperature will not exceed '60*C which compares favorably with 120*C in the ANSI str.ndard, endorsed by Regulatory Guide 3.1.
The Region II Project Inspector has no objection to this amendment.
III.
Conclusion and Recommendation The proposed amendment should have no adverse effect on the public health and safety or on the environment. Apppoval of the application is recomended.
N110190973 810929 Originai signt ry (hDRADOCK 07001151 George H. Bidinger
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w r. Crow G. H. Bidinger Approved by:
W. T. Crow, Section Leadeyranium Process Licensing Section r
Uranium Fuel Licensing Branch uivision of Fuei Cycle and S
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NRC FORM 31800 80 NRCM OM OFFICIAL RECOFiD COPY
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