ML20216D435

Provides Description of Modifications That Will Be Made to Ammonia Recovery Facility.Wastewater Flowsheet Encl

ML20216D435
Person / Time
Site:	Framatome ANP Richland
Issue date:	07/21/1999
From:	Edgar J SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
JBE:99:039, NUDOCS 9907280154
Download: ML20216D435 (3)

Text

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i SIEMENS July 21,1999 JBE:99:039 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

License Amendment Application - SNM - 1227, Docket 70-1257; Addition to Ammonia

)

Recovery Facility j

As described in my meeting on June 17,1999 with members of the NRC's Licensing and international Safeguards Branch, Siemens Power Corporation (SPC), as part of its lagoon phase out program, will make the modifications described below to its Ammonia Recovery Facility (ARF). If it is decided that such modifications require an amendment to SPC's license, SPC requests such an amendment.

Descriotion of Modifications Four tanks and a second ion exchange (IX) column will be added to ARF in a 42X38 foot addition to the northwest corner of the ARF Building. The addition will be of the same construction as the ARF Building; i.e., a pre-engineered metal structure on a concrete pad. The

- floor of the addition will be three feet below grade to provide sealed spill containment (1%

times the capacity of the largest tank) and to match the roof line of the existing ARF Building.

Three of the four tanks - Tanks 1,2 and 5A - and the additional IX column will be located inside the addition. The fourth tank - the carbonate make up tank - will be outside the addition on a concrete pad under an awning.

Tank 1. The high-uranium (~700 ppmU) regeneration solution from the IX column currently

. goes to Lagoon 3 and eventually through the Lagoon Uranium Recovery (LUR) process. With the addition of the 5000 gallon IX Regeneration Tank 1, the solution from each IX regeneration will be collected in Tank 1 and subsec uently fed to the Miscellaneous Uranium Recovery System (MURS) in the UO B Jilding.

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' Tank 2. Currently Lagoon 2 receives the low U, high ammonia effluent from the ammonium diuranate (ADU) line and feeds the ARF process. The 7000 gallon Tank 2 will replace Lagoon 2.

lank QA. Currently Lagoon 5A receives the treated effluent from ARF as well as low-U, low ammonia effluents from other processes such as the UO Building Laboratory and Dry 2

Conversion. _The 12,000 gallon Tank 5A will replace Lagoon 5A. Tank 5A will feed the IX columns whose ' output feeds the sewer.

9907290154 990721 PDR ADOCK 07001257 sh C

PDR Siemens Power Corporation i

2101 Hom Rapids Road

' Tel:

(509) 375-8100 i

RicNond, WA 99352' Fen:

(509)375 8402

l U.S.*NuclIar R:gul: tory Commis: ion JBE:99:039 4 July 21,199 -

Page 2 Carbonate Make-uo Tank. Currently Lagoon 4 solution is used to strip uranium from, i.e.

regenerate, the IX columns. The 4000 gallon carbonate make-up tank will replace Lagoon 4 for this purpose; i.e. ammonium or sodium carbonate will be made up in this tank and used to

. regenerate the IX columns.

IX Column. A second IX column will be added so that, while one column is being regenerated, the IX operation can continue. As a result, Lagoon 5A can be replaced with a relatively small

' Tank 5A. The second IX column is identical to and installed in parallel with the existing

column, Sefety considerations. These modifications represent a significant upgrade in environmental protection at SPC's site by enclosing materials in tanks which have been managed in open, lined surface impoundments. The material of construction for the vessels will be selected to be compatible with their contents. Double containment will be provided in the addition by the vessels and the spill containment feature described earlier. The tanks will be equipped with

. alarmed, electronic level detectors and alarmed leak detectors will be located on the floor in the addition.

The licensed material will be handled in the ARF addition in accordance with the radiation

. protection, criticality safety and environmental protection programa described in chapters 3,4 and 5, respectively, in SPC's license application. The solutions contained in the various vessels are currently routinely handled at SPC and so represent no new challenges. From a fire protection standpoint, the ARF building is rated as noncombustible. Fire loading is kept to a minimum through monthly inspections. Fire extinguishers (dry chemical or CO ), alarm pull 2

boxes, and heat detectors are strategically placed throughout the building.

With regard to criticality safety, it will be maintained in Tank 1 by sampling the uranium content of the solution from each IX regeneration and thereby controlling the mass and concentration of uranium in the tank to a safe batch. In Tanks 2 and 5A, uranium concentration (up to 5 ppm in Tank 2 and 2 ppm in Tank 5A) will be controlled by process chemistry, uranium monitors, and periodic inspections for uranium buildup. In the IX columns the urenium concentration is and will continue to be monitored such that it will not exceed 140 gU/l (safe concentration). Tests have shown that the IX resin will not load to greater than 140 gU/l. The carbonate make-up tank contains no SNM.

Enclosed, to assist in your understanding of how these new tanks will fit into SPC's wastewater system, is a wastewater flowsheet. SPC expects to begin operational testing of the equipment described herein in February,2000. To comply with a milestone in the consent decree between SPC and the Washington State Department of Ecology this equipment must be operational by mid-July, 2000.

If you require further information,'please call me at 509-375-8663.

. Very truly yours, James B. Edgar Staff Engineer - Licensing

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