ML20195C663: Difference between revisions

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=Text=
=Text=
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{{#Wiki_filter:, _                                  ._        _  _    .                    ._-              __
S:pt:mb:r 11,1998 EN 98-060 OFFICE OF ENFORCEMENT NOTIFICATION OF SIGNIFICANT ENFORCEMENT ACT:ON licensea:      United States Enrichment Corporation        EA 98-239 Bethesda, Maryland Docket No. 70-7001
 
==Subject:==
EXERCISE OF ENFORCEMENT DISCRETlON This is to inform the Commission that the staff intends to exercise enforcement discretion pursuant to Section Vll.B.6 of the Enforcement Policy and not issue a Notice of Violation or propose a civil penalty for a Severity Level Ill problem involving a nonconservative assumption in the Safety Analysis Report (SAR) updated accident analysis. The issue involved a seismic accident analysis which assumed no liquid uranium hexafluoride (UFe)in the accumulators. This assumption underestimated the potential source term for the seismic accident scenario. USEC operates with liquid UF6 in the accumulators.
The staff proposes to exercise enforcement discretion because of: (1) the difference between current requirements and previous (old) design practices which appeared to allow the seismic design and accident analysis assumptions used by USEC; (2) USEC's prompt compensatory measures and comprehensive design changes to resolve the seismic weakness, as detailed in a Confirmatory Order issued to USEC on April 22,1998 (EA 98-156); and (3) USEC's corrective actions to improve the rigor and documentation of safety evaluations for as-found conditions.
It should be noted that the licensee has not been specifically informed of the enforcement decision. The schedule ofissuance is:
Mailing ofletter detailing exercise of enforcement discretion      September 18,1998 Telephone notification oflicensee                                  September 18,1998
,        The State of Kentucky will be notified
;        No response is required to this letter detailing exercise of enforcement discretion l        Contacts: J. DelMedico, OE, 415-2739                  J. Lieberman, OE, 415-2741 l
Distribution O'NFN                    OWFN                    TWFN                Regional Offices r
        . Chairman Jackson        EDO              OC                RI            RIV Comm. Diaz                          DEDE        AEOD                Ril          WCFO Comm. McGaffigan OE                        OP CTR            Rlli Comm.                    OGC              NMSS SECY                    NP.R              IRM                Mall OCA                      01                OlG                NUDOCS l      PA                      SP                RES                PUBLIC IP                                        ACRS 1
PRELIMINARY INFORMATION - NOT FOR PUBLIC DISCLOSURE UNTil VERIFICATION THAT LICENSEE HAS RECEIVED ACTION                              <D 9811170191 900911 PDR      I&E
                                                                                                    \u\\U EN-98-060              PDR}}

Latest revision as of 20:32, 16 December 2020

EN-98-060:informing That on 980918 NRC Intends to Exercise Enforcement Discretion Per Section VII.B.6 of Enforcement Policy & Not Issue NOV or Propose CP for Severity Level III Problem Re Nonconservative Assumption in SAR
ML20195C663
Person / Time
Site: 07007001
Issue date: 09/11/1998
From: Delmedico J, Lieberman J
NRC OFFICE OF ENFORCEMENT (OE)
To:
References
EA-98-239, EN-98-060, EN-98-60, NUDOCS 9811170191
Download: ML20195C663 (1)
v • d • e


Text

, _ ._ _ _ . ._- __

S:pt:mb:r 11,1998 EN 98-060 OFFICE OF ENFORCEMENT NOTIFICATION OF SIGNIFICANT ENFORCEMENT ACT:ON licensea: United States Enrichment Corporation EA 98-239 Bethesda, Maryland Docket No. 70-7001

Subject:

EXERCISE OF ENFORCEMENT DISCRETlON This is to inform the Commission that the staff intends to exercise enforcement discretion pursuant to Section Vll.B.6 of the Enforcement Policy and not issue a Notice of Violation or propose a civil penalty for a Severity Level Ill problem involving a nonconservative assumption in the Safety Analysis Report (SAR) updated accident analysis. The issue involved a seismic accident analysis which assumed no liquid uranium hexafluoride (UFe)in the accumulators. This assumption underestimated the potential source term for the seismic accident scenario. USEC operates with liquid UF6 in the accumulators.

The staff proposes to exercise enforcement discretion because of: (1) the difference between current requirements and previous (old) design practices which appeared to allow the seismic design and accident analysis assumptions used by USEC; (2) USEC's prompt compensatory measures and comprehensive design changes to resolve the seismic weakness, as detailed in a Confirmatory Order issued to USEC on April 22,1998 (EA 98-156); and (3) USEC's corrective actions to improve the rigor and documentation of safety evaluations for as-found conditions.

It should be noted that the licensee has not been specifically informed of the enforcement decision. The schedule ofissuance is:

Mailing ofletter detailing exercise of enforcement discretion September 18,1998 Telephone notification oflicensee September 18,1998

, The State of Kentucky will be notified

No response is required to this letter detailing exercise of enforcement discretion l Contacts
J. DelMedico, OE, 415-2739 J. Lieberman, OE, 415-2741 l

Distribution O'NFN OWFN TWFN Regional Offices r

. Chairman Jackson EDO OC RI RIV Comm. Diaz DEDE AEOD Ril WCFO Comm. McGaffigan OE OP CTR Rlli Comm. OGC NMSS SECY NP.R IRM Mall OCA 01 OlG NUDOCS l PA SP RES PUBLIC IP ACRS 1

PRELIMINARY INFORMATION - NOT FOR PUBLIC DISCLOSURE UNTil VERIFICATION THAT LICENSEE HAS RECEIVED ACTION <D 9811170191 900911 PDR I&E

\u\\U EN-98-060 PDR

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