ML20155G533

Informs That Licensee Info Re Verification of Environ Qualification for Bunker Ramo Penetration Assemblies Installed at Plant Did Not Provide Sufficient Info to Establish Operability Underdesign Basis Events

ML20155G533
Person / Time
Site:	Davis Besse
Issue date:	06/02/1988
From:	Crutchfield D Office of Nuclear Reactor Regulation
To:	Shelton D TOLEDO EDISON CO.
References
NUDOCS 8806200014
Download: ML20155G533 (3)

Text

q June 2,1988 Docket No. 50-346 Mr. Donald C. Shelton Vice President, Nuclear Toledo Edison Company Edison Plaza - Stop 712 300 Madison Avenue Toledo. Ohio 43652

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF BUNKER RAM 0 CONTAINMENT PENETRATIONS AT DAVIS BESSE During a Region III Environmental Qualitication (EQ) Inspection at the Braidwood Station conducted during February and March 1988, it was determined that the environmental qualification of four Bunker Ramo containment pene-tration assemblies had not been adequately demonstrated. In response to a recent request, you provided information regarding the verification of qualification for Bunker Ramo penetration assemblies installed at Davis Gesse.

After reviewing this infomation we conclude that environmental qualification has still not been demonstrated for these assemblies. The documentation (test reports) used to support your position that these penetration assemblies are qualified is similar to that used for Braidwood 2. That documentation did not provide sufficient information (for example, insulation resistance test data) to conclude that operability under r'esign basis events has been fully demon-strated.

Since EQ has not yet been established for.the Bunker Ramo penetrations installed at Davis Besse, you should follow the guidance identified in Generic Letter 88-07, "Environmental Qualification of Electrical Equipment Important to Safety for Nuclear Power Plants," dated April 7,1988, regarding written Justification for Continued Operation.

This letter does not require any response. However, your evaluation in support of making a finding of operability should be made available for NRC review 1

regarding the demonstration of equipment operability.

Sincerely, Origioc.1 Cicac *. tyt Dennis M. Crutchfield, Director Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Docket File PD33 Reading NRC & Local PDRs ACRS 10 K. Perkins P. Kreutzer GHolahan A. Thadani A. De Agazlo OGC-Bethesda P. Shemanski EJordan J. Partlow PD33/PM PD33/LA SAD 0 A. De A :ps P3 /? Xfeutzer AThadani G D eld 06/A /88 06/q/88 06/p/86 06/Z/8 6/2-/88 PD33/PD 7Et K.Perkinsfx.

6/,1/88 g 62g g g 6g G PDR

1. o

~,, UNITED STATES

, 8 n NUCLEAR REGULATORY COMMISSION

, 3  : E WASHING TON, D. C. 20555

\*****/ June 2, 1988 Docket No. 50-346 Mr. Donald C. Shelton Vice President, Nuclear Toledo Edison Company Edison Plaza - Stop 712 300 Madison Avenue Toledo, Ohio 43652

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF BUNKER RAM 0 CONTAINMENT PENETRATIONS AT DAVIS BESSE During a Region III Environmental Qualification (EQ) Inspection at the Braidwood Station conducted during February and March 1988, it was detennined that the environmental qualification of four Bunker Ramo containment pene-tration assemblies had not been adequately demonstrated. In response to a recent request, you provided infctr.ation regarding the verification of qualification for Bunker Ramo penetration assemblies installed at Davis Besse.

After reviewing this information we conclude that environmental qualification has still not been demonstrated for these assemblies. The documentation (test reports) used to support your position that these penetration assemblies are qualified is similar to that used for Braidwood 2. That documentation did not provide sufficient information (for example, insulation resistance test data) to conclude that operability under design basis events has been fully demon-strated.

Since EQ has not yet been established for the Bunker Ramo penetrations installed at Davis Besse, you should follow the guidance identified in Generic Letter 88-07, "Environmental Qualification of Electrical Equipment Important to Safety for Nuclear Power Plants," dated April 7, 1988, regarding written Justification for Continued Operation.

This letter does not require any response. However, your evaluation in support of making a finding of operability should be made available for NRC review regarding the demonstration of equipment operability.

Sincerely,

~

' W.

nnis M. Crutchfie , ctor Division of Reactor Pro cts - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation  !

l cc: See next page i

i

-.-n-- m

i Mr. Donald C. Shelton Davis-Besse Nuclear Power Station Toledo Edison Company Unit No. 1 cc:

David E. Burke Esq.

The Cleveland Electric Radiological Health Program Illuminating Company Ohio Department of Health P. O. Box 5000 1224 Kinnear Road Cleveland, Ohio 44101 Columbus, Ohio 43212 Mr. Robert W. Schrauder Attorney General Manager, Nuclear Licensing Department of Attorney Toledo Edison Coopany General Edison Plaza 30 East Brcid Street 300 Madison Avenue Columbus, 0iio 43215 Toledo, Ohio 43652 Mr. James W. Harris, Director Gerald Charnoff, Esq. (Addressee Only)

Shaw, Pittman, Potts Division of Power Generation and Trowbridge Ohio Department of Industrial Relations 2300 N Street N.W. 2323 West 5th Avenue Washington, D.C. 20037 P. O. Box 825 Columbus, Ohio 43216 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Ohio Environmental Protection Agency 799 Roosevelt Road 361 East Broad Street Glen Ellyn, Illinois Columbus, Ohio 43266-0558 President, Board of Mr. Robert B. Borsum County Commissioners of Babcock & Wilcox Ottawa County Nuclear Powe'r Generation Division Port Clinton, Ohio 43452 Suite 525, 1700 Rockville Pike Rockville, Maryland 20852 State of Ohio Public Utilities Commission Resident Inspector 180 East Broad Street U.S. Nuclear Regulatory Commission Columbus, Ohio 43266-0573 5503 N. State Route 2 Oak Harbor, Ohio 43449

.-, ., . _ _