ML17187B060

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Alerts Util of Need to Compile & Maintain Specific Info,Per Regulatory Requirements Re Computer Codes Used to Perform LOCA Analyses for Util Plants.Insp Team Found Significant Deficiencies in Siemens Power Corp LOCA Analyses
ML17187B060
Person / Time
Site: Dresden, Quad Cities, LaSalle  
Issue date: 07/18/1997
From: Stewart Bailey
NRC (Affiliation Not Assigned)
To: Johnson I
COMMONWEALTH EDISON CO.
References
NUDOCS 9707230103
Download: ML17187B060 (7)
v • d • e


Text

UNITE~ STATES

  • NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2055>0001 July 18, 1997 Ms. Irene Johnson, Acting Manager Nuclear Regulatory Services Commonwealth Edison Company Executive Towers West III 1400 Opus Place, *Suite Sao Downers Gro~e, IL 60515 t:jo-2~7/zW~

254./2~s

~7"3,/214-

SUBJECT:

. NRC INSPECTION OF SIEMENS POWER CORPORATION LOSS-OF-COOLANT ACCIDENT

. (LOCA) ANALYSES

Dear Ms. Johnson:

the NRC recently completed an inspection of Siemens Power Corporation ~

Nuclear Division (SPC) in Richland, Washington. :Technical issues were raised, resulting from the inspection, that require action by SPC. *The exit meeting was conducted with SPC at NRC headquarters. on May 13, 1997. A copy *of the.

inspection report will.be provided to you when it is a~ailable. This letter is to alert Commonweal th Edi son Company.(ComEd) of the need to compile and

  • maintain specific information pursuant t.o reg~latory requirements pertaining to the computer code~ *used *to.p~rform LOCA arialy*es for ComE~ plants.

The NRC inspection team found significant deficienCies.*in *spc*s documentation

.. of its analysis codes and* models, and determined that SPC performed* inadequate verification and validation (V&V) of* approved codes after changes were made.

Regulatory requirements for documentation and V&V of LOCA codes are contained iri 10 CFR Part 50, Appendix K, Section II. These requirem~nts are impos~d on **

licensees, since licensees are ultimately responsible for ensuring that. the

  • L_OCA analyses for thei.r plants c;omply with applicable regulations.

In addition, general requirements with regard to quality assurance, )lhich are related to licensee responsibilities in ensur~ng that LOCA codes and analyses comply with applicabl~ regulations, are discus~ed in* 10 CFR Part 50, Appendix

  • B; for example, Criterion III (Design Control), Criterion V (Instructions, Procedures, and Drawings)i Criteri~n VII (Control of Purchas~d Material,
  • **.Eq11ipment, and Services), Criterion X (Inspection), Criterion XVII (Quality Assura*nce Records), and Criter_ion* XVIII (Audits).

Licensees must ma i ritai n docume'ntat ion that provides adequate assurance that their LOCA analyses complj with th~ appropriate provisions of 10 CFR Part 50,

  • Appendix B and Appendix K, and that they meet the acc;eptance criteria of 10 CFR 50.46. This documentation should consist of (but is not limited to) reports of internal or external reviews of LOCA methodologies and fes~lts; audit or inspection reports; or independent confirmatory analyses. While the staff does not require, at this time, that licensees submit this information, the staff will review the documentation as part of its inspections of I

lic~nsees; such as those. cofttluct~d in support of the core performance action 07230103 970718 l '(I I

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Failure of licensees to provide adequate oversight of their contractors or ~o maintain adequate documentation could result in enforcement action.

Also, it is the licensee's responsibilit~ to conduct meaningful audits of their.contractors. This is discussed in the context of requirements related to LOCA analyses in NRC Information Notice (IN) 97-15; however, it is generally applicable to other contractor activities, as well.

If the staff determines* that contractor technical and quality assurance deficiencies should have been discovered by licensees' audits, the staff will generally* initiate enforcement action against the licensees..

Dresden and Quad Cities Stations currently use, and LaSalle.station has been approved to use, SPC methodologies for their*LOcA* analyses.

As a follow~up to the inspection at SPC, the staff may inspect ComEd's documentation related* to the oversight of SPC LOCA analyses petformed for ComEd plants. :

Docket Nos. 50-237, 50-249, 50~254,

  • 50-265, 50-373; 50-374 cc:

see next page Sincerely,.

Stewart It. Bailey Project Dfrectorat I

  • Division of Reactor Projects ~ III/IV
  • Office of Nuclear Reactor Regulation *
  • I. Johnson Commonwealth Edison Company

.. cc:

Michael I. Miller, Esquire Sidley and Austin One First National Plaza Chic~go, Illinois 60603 Site Vice President.

.Dresden Nuclear Power Station 6500 North Dresden Road M6rris, Il1inois 60450-9765.* *

  • Station Manager.

Dresden Nuclear Power Station

. 6500. North Dresden Road Morris, Illinois 60450-9765 U.S. Nuclear Regulatory Commission Resident Inspectors* Office

  • .. - Dresden Station 6500 North Dresden Road

~orris, Illinois 60~50-9766 Richard J.*Singer.

Ma_nager - Nuclear MidAmerican Energy Company

  • 907 Walnut Street P.O. Box 657
  • Des Moines*, Iowa - 50303 Brent*E. Gale, Esq.

Vice President - Law and "

  • . Regulatory Affairs MidAmerican Energy Company One_RiverCenter Place 106 East Second Street P.O. Box 4350 Davenport, Iowa-52808 *

.Chail'.'man

  • Rock Island.County Board
  • of Supervisors 1504 3rd Avenue*

Rock Islarid Couhty Office Bldg.

Rock Isl~nd, Illinois 61201 Regional Administrator

.. U.S. NRC, Regi~n III 801 Warrenville Road Lis1e, Illinois 60532-4351 Dresden Nuclear Power Station Unit Nos. 2 and 3 Quad Cities Nuclear Power Station Unit Nos. 1 and 2.

Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illiriois 62704

. Chairman Grundy County Board

  • Administration Building*

1320 Union Street Mor~is~ Il~inots 60450.

Mr~ L. William Pe~rce Station Manager Quad Cities Nuclear Power Station 22710 206th Avenue North Cordova,.Illinoi~ 61242 U.S. Nuclear* Regulatory *commis~ion

  • Qu~d Cities Resident Inspect~rs Office 22712 206th Avenue North Cordova, Illinois 61242 Document Contrql Desk-Licensing Commonwealth Edison Company 1400 Opus Place, Suite 400
  • l!!:
  • e*.

I. Johnson Conunonwealth Edison Company cc:

Phillip P. Steptoe, Esquire Sidley and Austin On~ Firs.t Nati'onal Plaza Chicago, Illinois 60603 Assistant Attorney General 100 West Randolph Street Suite 12 thicago, Illinoi~ 60601 U.S. Nuclear Regulatory Commission

  • Resident Inspectors Office LaSalle Station 2605 N. 21st Road Marseilles, Illinois. 61341-9756 Chairman

.LaSalle County Board of Supervisors LaSalle County Courthouse Ottawa, Illinois 61350 *

  • Attorney General

. 500 South Second Str.eet

  • springfield, Illiriois 62701
  • Chairman 11 l i no1 s Comm*erce. Commission Leland Building
  • 527 East Capitol Avenue Spririgfield, Illinois. 62706 Illinois Department* of.Nuclear Safety Office of Nuclear Facility Safety

.1035 Outer Park Dri~e Springfield, Illinois 62704 Regional Administrator.

U.S. NRC, Region III

  • 801 Warrenville Road Lisle, Illinois 60532-4351 LaSalle Station Manager LaSalle County Station
  • Rural Route 1 P.O. Box 220 Marseilles, i11inois 61341 LaSalle County Station Unit Nos. 1 and 2 Robert Cushing Chief. Public Utilities Division Illinois Attorney General's Office 100 West Randolph Street Chicago, Illinois 60601 Michael I. Miller, Esquire Sidley and Austin One First National Plaza Chicago, Illinois 60603 Document Control Desk-Licensing Commonwealth Edison Company 1400 Opus Place, Suite 400 Downers Grove, Illinois.60515

I. Johnson

2. -
  • plan. *failure of licensees to provide adequate oversight of their contractors or to m*intain ~dequate documentation could result in enforcement action.

Also, it is the lic~nsee's responsibility to conduct meaningful audits of their contractors. This is discussed in the context of requirements related to LOCA ~~alyses in NRC lnformatton Notice (IN) 97-15; however, it is generally applicable to other contractor activities, as well.

If the staff determines that contractor technical and quality *assurance deficiencies should have been discovered by licensees' audits, the staff will generally initiate

  • enfdrcement action ag~inst th~ licensees.

Dresden and ~uad Cities Statlons currently use, and LaSall~ Station has been approved to use, SPC methodologies for their LOCA analyses.

As a follow-up to the inspection at SPC, the staff may inspect ComEd's documentation related to the oversight of SPC LOCA analyses performed for ComEd_ plants.

Sincerely, Orlgina! $igMd By:

,1'

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.,.*. Stewart N

~ Bailey, Project Manager

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._~.Project Directorate 11.1-2 Division of Re~ctor Projects - Ill/IV

>~~ * ~h~. Offjce,of Nu~lear Reactor Regulation

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Docket Nos.

50_-l31,._:5,0~-249;' 50"'-254,

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  • SEE.PREVIOUS CONCURRENCE*

To receive a copy of this document, indicate in the bo~: "C" * ':' C~py without enclosures "E" = Copy with enclosures "N" = No copy OFFICE PM:PDIII-2

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c D: POii 1-2 NAME SBAILEY~

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Also, it is the licensee's responsibility to conduct meaningful audits of their contractofs.

  • This is discussed in th~ context of requirements related

. to LOCA analyses in NRC Information Notice (IN) 97-15; however, it is generally applicable t~ other contractor activities, as well.

If th staff determines that contractor technical and quality assurance defic*i cies should have been discovered by licensees' audits, the staff will gener ly initiate enforcement action against the licensees.-

The staff is curr ly reviewing whether enforcement action is warranted a~ a*result of the C inspection.

  • ~'*._

l.I si~~erely, H

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.. -,~Stewart N*-

Ba,i 1 ~Y,' *. Projec;t Ma.nag er Project* irectorate '111-2....,

    • Divis' n Qf ~eact6f Proj~cts - Ill/IV
off* e. of.~u*c] ~ar RS!actor:>Regul at ion t'.

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Docket Nos.. 50-237, 50-249, 50-i54,

  • 50-265, 50-373, 50-374.

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plan.

Failure of. licensees to provide adequate oversight of their contractors or to miintain adequate documentation could result in enforcement action.

Also, it is the licensee's responsibility to conduct meaningful audits of their contractors.* This is discussed in the context of requirements related to LOCA analyse*s in NRC Information Notice (IN) 97-15; however, it is generally applicable to other contractor activities, as well. If the staff determines that contractor technical and quality assurance deficiencies should have been discovered by licensees' audits, the staff will generally initiate*

enforcement action against the licensees.

Dresden 'and Quad Cities Stations currently use, and LaSalle Station has been approved to use, SPC m~thodologies for their LOCA analyses.

As a follow-up to the inspection at SPC, the staff may inspect ComEd's documentation *related to the oversight of SPC LOCA an~lyses performed for ComEd plants.

Sincerely, Stewart *N. Bailey, Project Manager Project Directorate III-2 Di~ision of Re~ctor Projects ~ III/IV.

Office of *Nuclear Reactor Regulation Docket Nos. 50-237, 50-249, 50-254, 50~265~ 50-373, 50-374 cc:

se~ next page Distribution:.

Docket File

  • J. Roe~ JWR C. Moore R. Pulsifer A. Levin M. Dapas; RI lI
  • PUBLIC E. Adensam, EGAl
s. Bailey D. Skay
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  • SEE PREVIOUS CONCURRENCE To receive a copy of this doeument, Indicate In the box: *c* = Copy without enclosures *E~ = Copy with enclosures *N* = No copy OFFICE PM:PDIII-2

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c D: POI Il-2 NAME SBAILEV~

RCAPRA DATE 01 I g /97 OFFICIAL RECORD COPY

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