ML20149D635

Discusses 930212 Confirmatory Action Ltr Detailing Agreement Between Siemens Power Corp & NRC Resulting from Augmented Insp Team Review of Event Which Occurred at Facility During Wk of 930208

ML20149D635
Person / Time
Site:	Framatome ANP Richland
Issue date:	09/13/1993
From:	Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:	Femreite B SIEMENS CORP.
References
CAL-RV-93-01, CAL-RV-93-1, NUDOCS 9309210114
Download: ML20149D635 (2)

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SEP13 2 Docket No. 70-1257 License No. SNM-1227 CAL No. 5-93-001 Siemens Power Corporation 2101 Horn Rapids Road P. O. Box 130 Richland, Washington 99352-0130 Attention: Mr. B. N. Femreite, Plant Manager

SUBJECT:

CLOSURE OF CONFIRMATORY ACTION LETTER This letter refers to the Confirmatory Action Letter (CAL) dated February 12, 1993, detailing the agreement between Siemens Power Corporation (SPC) and the Nuclear Regulatory Commission (NRC) resulting from the Augmented Inspection Team (AIT) review of an event which occurred at your facility during the week of February 8, 1993. In the CAL, we confirmed SPC's commitments (1) to perform an engineering evaluation of the potential intrusion of moderating liquids into the uranium oxide blending and powder preparation systems, (2) to define the specific controls necessary to prevent criticality, and (3) to use either an alternative method to manually vacuum transfer blended powder to the powder preparation system and tag the " accurate" feeder system out of service, or if SPC decided to use the feeder, SPC would dedicate, on a continuous basis, a qualified operator at the feeder station to observe operation of the feeder and to be watchful for the intrusion of moderating liquids. Use of the alternate method or the dedicated operator was to remain in effect until completion of the engineering review and satisfactory resolution of NRC concerns. SPC submitted the engineering evaluation to the NRC on April 22, 1993.

In the engineering evaluation, SPC identified several additional controls to be implemented prior to removing the interim control utilizing a qualified operator to monitor for moderator intrusion. The additional controls identified were (1) installation of vac-u-max shutdown switches in the control rooms, (2) installation of deadman switches for manual operations with the powder transfer _ system, (3) installation of moisture detectors in the powder preparation hoods with automatic vacuum system shutdown, (4) upgrading of

" accurate" feeder hopper covers with spring-activated closures and installation lights inside the feed hoppers, and (5) installation of covers on vacuum system air inlets. On September 8, 1993, we verified that you had fully implemented these additional controls.

With the implementation of the additional controls and the completion of the engineering evaluation, Siemens Power Corporation has satisfied the conditions of the CAL.

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e r'k In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter will be placed in the NRC Public Document Room.

Sincerely, B. H. Faulkenberry Regional Administrator cc:

State of Washington L. J. Maas, Manager Regulatory Compliance bcc w[ enclosures:

PDRt Inspection File H. Thompson, Jr., DEDS R. Bernero, Director, NMSS J. Lieberman, Director, OE R. Pierson, NMSS C. Smith, NMSS M. Adams, NMSS G. Cook B. Faulkenberry R. Bellamy, RI D. Collins, RII J. Grobe, RIII ,

C. Cain, RIV I)

D. Proulx, NRC, WNP-2 jf1 EGION V h "h [ f/MBlume C ooker Reese Huey FWenslawski 9/ 7 /93 9/9/92 9//c/93 9//0/93 9//9/93 Rc (ES ST

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