ML19347F406
| ML19347F406 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/14/1981 |
| From: | Wisenburg M TENNESSEE VALLEY AUTHORITY |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8105190200 | |
| Download: ML19347F406 (3) | |
Text
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May 14,1981
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Director of Nuclear Reactor Regulation u.s g.eu Attention: Mr. A. Schwencer, Chief ec%,3c,, A
'c Licensing Branch No. 2 S '>.
Division of Licensing
,' y U.S. Nuclear Regulatory Commission
'Q'i Washington, DC 20555
Dear Mr. Schwencer:
In the Matter of thd Application of
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Docket No. 50-327 Tennessee Valley Authority
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50-328 Enclosed is a status report on the Sequoyah Nuclear Plant Procus Control Program (PCP). We have revised the statement about the quality assurance program in the PCP status report transmitted by my letter to you dated April 3,1981.
Very truly yours, THINESSEE VALLEY AU1110RITY i
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ENCLOSURE SEQUOYAH NUCLEAR PLANT PROCESS CONTROL PROGRAM Dewatered resin will be generated at Sequoyah Nuclear Plant by using the plant's installed Chemical and Volume Control System (CVCS) (FSAR, section 9.3.4), and a portable radwaste demineralizer system.
The CVCS is used to maintain primary water chemistry during startup, shutdown, and normal operation of the reactor system. Exhausted resins will be sluiced from the installed plant demineralizers using approved plant operating instructions for the system involved, to a 300-cubic-foot stainless steel spent resin storage tank where it will be stored until final disposal at a burial site. Then, using the appropriate plant operating instruction, the resin is sluiced from the spent resin stcrage tank to a container (186-cubic-foot liner) located in the equipmnt access portal, elevation 706, in the auxiliary building, and then dewatt: red using an approved plant operating procedure before shipment offsite to an NRC-licensed burial site (Chem-Nuclear Systems, Inc., located near Barnwell, South Carolina).
The portable demineralizer system consists,of a prefilter and one or more 160-cuble-feet liner (s) in series containing new, regenerated resin located in the equipment access portal, elevation 706, in the auxiliary building. This system is used to treat liquid radwaste produced during startup, shutdown, and normal operation of the primary system and drains from plant process equipment which collect in central collector tanks (i.e., floor and equipment drain, tritiated drain, monitor, holdup, and lau ndry). The resin is exhausted by pumping the contents of the collection tanks through the filter and liner. After exhaustion, the resin is dewatered using an approved plant operating procedure before shipment offsite to an NRC licensed burial site (Chem-Nuclear Systems, Inc., near Barnwell, South Carolina).
hhen shielding is a requirement for transport offsite, all dewatered resin shipped offsite will be transported in NRC approved shipping casks.
The burial ground criteria for accepting shipped dewatered resin is equal to or less than 1 percent water by volume or 1 gallon, whichever is less.
This criteria will be proven by testing wet resin contained in liners using tne plant dewatering procedures until the procedures are demonstrated adequate.
-2 The Process Control Program.(PCP) has been revised and the new revision will be sub-ti' ted Lc NRC in Sequoyah's next semiannual report due July 31, l?' -.
The Office of Power Quality Assurance Program provides for the procurement, inspection, and validation of the portable radwaste demineralization equip-ment and associated services. Equipment design, manufacture, and quality assurance requirements have been based on NRC Regulatory Guide 1.143,
" Design Guidance for Radioactive Waste Management Systems, Structures, and Components Installed in Light-Water-Cooled Nuclear Power Plants." The validation program includes resin dewatering evaluations to deter. sine that -
the process meets burial site criteria. The Division of Nuclear Power Quality Ascurance Staff evaluates suppliers and inspects the equipment and process to verify contractural compliance by suppliers. The Office of Power Quality Assurance Staff perfo.*ms official quality assurance audits of suppliers and TVA activities at the contract performance site.
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