ML19305C643
| ML19305C643 | |
| Person / Time | |
|---|---|
| Site: | Wood River Junction |
| Issue date: | 01/24/1980 |
| From: | Bowers C UNITED NUCLEAR CORP. (SUBS. OF UNC, INC.) |
| To: | |
| References | |
| 15294, NUDOCS 8003310200 | |
| Download: ML19305C643 (4) | |
Text
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4 UnC RECOVERY SYSTErnS
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January 24, 1980 r,g g,
,(, j'dhiOH CEB 80-19 U.S. Nuclear Regulatory Agency Mr. W.
T. Crow, Chief Fuel Cycle and Ma';.erial Safety Branch 7915 Eastern Avenue Silver Springs, MD 20910 Gentlemen:
The purpose of this letter is to request an adminis-trative amendment to NRC License SNM 777, Docket 70-820.
This amendment provides for the continued use of the borosilicate raschig rings originally installed in tank 1-D-24A.
The rings in this tank were purchased in 1964 and have never been completely changed, although new rings meeting the present applicable specifications have occasionally been added to maintain the proper ring volume.
The original rings were of type EN-1 glass (18.5% B20 ) and subsequent yearly inspection 3
and analysis have shown only minor changes from their design criteria.
If we do decide to change all the rings in this tank in the future, they will be replaced with Corning Glass 7740 type or equivalent.
This amendment is submitted as requested by the NRC in I and E Inspection Report 70-820/79-16 and agreed to by UNC-RS.
As it constitutes an administrative change, a check for $150 is enclosed.
Should you wish and further information, please contact us.
Very truly yours,
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CORPOR ATION LICENSE:
SNM-777, Docket 70-820 Pace 1
of 2
SECTION:
300 - Nuclear Critica31ty Safety Stand-Annroved ards SUBSECTION:
305 - Nuclear Poisor.s Issued 1-10 Supersedes 7/16/76 305.
NUCLEAR POISONS 305.1 Use of Nuclear Poisons Nuclear poisons are used only as a secondary nuclear criticality control.
The following types may be used.
1.1 Boro-silicate Glass Raschig Rings Boro-silicate glass raschig rings may be used in ves-sels containing solutions when nuclear criticality safety is maintained primarily by concentration control.
Such use shall be as described herein.
1.1.1 Boro-silicate glass raschig rings shall be constructed of a 1cw expansion. corrosion resistant type glass, compatible with the chemical and physical environment.
1.1.2 Raschig rings shall be Corning Glass 7740 type or equivalent containing nominal four (4) w/o natural boron with a range of 11.2 to 13.8 w/o B02 3-l.1.3 Raschig rings are small hollow cylinders with length and diameter approximately equal.
Wall thickness is a maximum of 0.250 inches.
1.1.4 The raschig rings will be uniformly distributed in the vessel and will occupy at least 22% of the volume.
1.1.5 Maximum solution concentration is 10 grams U235/ liter.
1.2 Inspections 1.2.1 Samples of the raschig rings from the bottom of the vessels or from a selected sample point typical of the vessel contents will be evaluated at least once each year.
Raschig rings shall be replaced when the boron content of the glass is reduced to less than 3 w/o as determined by analysis.
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.,/UnC UNITED NUCLEAR
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e CORPilRATION
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LICENSE:
SNM-777, Docket 70-820 p., n e of 2
SECTION:
300 - Nuclear Criticality Safety Stand-Aeornynd ards
~
SUBSECTION:
305 - Nuclear Poisons Issued
~
Supersedes 7-16-76 1.2 Inspections (continued)
However, vessels containing their original complement of rings of type E-1 glass (18. 5 %
B203) are acceptable for use until such time as the rings require replacement for any reason.
1.2.2 Vessels will be checked monthly to insure that the tank contains the required amount of ras-chig rings and that there has been no gross damage to the ring complement.
2.1 Soluble Salts Soluble boron or cadmium salts may be added to drums of solutions such as pickle liquids, analytical laboratory residues or other solutions when primary nuclear cri-ticality safety is based on concentration control.
Such use shall be as described herein.
2.1.1 Specifications Maximum solution concentrations are 10 grams U235 per liter.
Quantity of salt shall be estab-lished to maintain equal molal quantities of U235 and boron or cadmium.
(
Reference:
TID 7016, Rev.
1, page 32, Soluble Poisons) l
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.x-ATTACHMENT s
This payment is being made, under protest, to the Nuclear Regulatory Commission in compliance with the final order of the United States Nuclear Regulatory Commission entered on February 9, 1978, and publicly noticed on February 21, 1978 (43 Federal Regulations 7210) for inclusion in Title 10, Chapter I, Code of Federal Regulations, Part 170, entitled " Fees for Facilities and Materials Licenses and Other Regulatory Services i
under the Atomic Energy Act of 1954, as Amended, Revision of Fee Schedule".
United Nuclear Corporation specifically requests that i
all payments made as a result of this rule refunded with interest, if, as a result of future review or as a result of any subsequent action on the part of any other licensee or concerned party, this rule is determined to be illegal under Federal or State legislation.
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