ML20005F170

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Forwards Safety Evaluation Concluding That Use of Mobil Greases for Limitorque Actuators as Substitute for Currently Used Exxon Greases Acceptable,In Response to NRC Diagnostic Evaluation Team Aug 1986 Insp Findings
ML20005F170
Person / Time
Site: Dresden, Quad Cities, 05000000
Issue date: 01/09/1990
From: Ross T, Siegel B
Office of Nuclear Reactor Regulation
To: Kovach T
COMMONWEALTH EDISON CO.
Shared Package
ML17202G740 List:
References
TAC-67158, TAC-67159, NUDOCS 9001160010
Download: ML20005F170 (4)


Text

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January 9,1990 d

3 NRC & Local PDRs Docket Nos. 50-237/249 PDill-2 r/f Lluther and 50-254/265 JCraig TRoss BSiegel

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.T;cmas J. Kovach EJordan ACRS(10)

Nuclear Licensing Manager FWitt CYCheng H

Comonwealth Edison Company-Suite 300 GHill (16)

EBrach OPUS West 111 RZimmerman RF TMartin Kf i

1400 OPUS Place AGibson M HMillerRK Downers Grove, Illinois 60515 LCa11an its L

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF MOBIL GREASES FOR LIMITORQUE ACTUATORS FOR THE DRESDEN AND QUAD CITIES STATIONS (TAC N05.

67158AND67159)

Dear Mr. Kovach:

During the NRC Diagnostic Evaluation Team Inspection at the Dresden Nuclear Power Station in August 1987, the use of an apparently unqualified grease for Limitorque drywell motor-operated valves was identified.

By letter dated

' January 22, 1988 you comitted to environmentally qualify these greases, in a letter dated October 11, 1989, you transmitted a test report which contained the results of a test program at Wyle Laboratories that evaluated the accepta-bility of Mobil greases Mobilux EPO, EP1 and EP2 and Mobilgrease 28 for use in Limitorque actuators at Dresden and Quad Cities. The staff has reviewed this report and determined that the Mobil greases are environmentally qualified and that the maintenance and surveillance program on Limitorque actuators to be performed every other refueling outage or approximately every 3 years to ensure operability is acceptable. The staff's Safety Evaluation, which is enclosed, concludes that the u:,e of Mobil greases as a substitute for the currently used Exxon greases is acceptable. Therefore, this issue is resolved.

Original signed by l

l Byron L. Siegel, Project Manager Project Directorate 111-2 Division of Reactor Projects - 111, IV, V and Special Projects Original signed by Thierry M. Ross, Project Manager l

Project Directorate 111-2 Division of Reactor Projects - Ill, 9001160010 900109 L

PDR ADOCK 05000237 IV, V and Special Projects l'

O PNU l

Enclosure:

As stated (ja )D'

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LLuther BSiegel:ta TRoss JCraig pf 1/02/89

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NUCLEAR REGULATORY COMMISSION n

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j January 9,1990 l

Docket Hos. 50 237/249 l

and 50-254/265 I

Thomas J. Kovach i

Nuclear Licensing Manager i<

4 Commonwealth Edison Company-Suite 300 i

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OPUS West III E

1400 OPUS Place Downers Grove, Illinois 60515 l

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF MOBIL GREASES FOR LIMITOROUE ACTUATORS FOR THE DRESDEN AND QUAD CITIES STATIONS (TAC NOS.

67158AND67159)

Dear tir. Kovach:

During the NRC Diagnostic Evaluation Team Inspection at the Dresden Nuclear Power Station in August 1987, the use of en apparently unqualified grease for Limitorque drywell motor-operated valves was identified.

By letter dated January 22, 1988 you committed to environmentally qualify these greases.

In a letter dated October 11, 1989, you transmitted a test report which contained the results of a test program at Wyle Labcratories that evaluated the accepta-bility of Mobil greases Mobilux EPO, EP1 and EP2 and Mobilgrease 28 for use in Linitorque actuators at Dresden and Quad Cities. The staff has reviewed this report and determined that the Mobil greases ere environmentally qualified and L

that the maintenance and surveillance program on Limitorque actuators to be performed every other refueling outage or approxinately every 3 years to ensure i

operability is acceptable. The staff's Safety Evaluation, which is enclosed, t -

concludes that the use of Mobil grenses as a substitute for the currently used Exxon greases is acceptable.

Therefore, this issue is resolved.

M l

B ron L. Si el, Project Manager L

Project Directorate III-2 L

Division of Reactor Projects - III.

IV, V and Special Projects

$h Thierry M. Ross, Project Manager Project Directorate III-2 Division of Reactor Projects - III, IV, V and Special Projects

Enclosure:

As stated

- - ~. - - -.

Q,.I-Mr. Thomas J. Kovach Dresden Nuclear Power Station i

Commonwealth Edison Company Units 2 and 3 1

i cc:.

t Michael I. Miller, Esq.

Sidley and Austin One First National Plaza Chicago, Illinois 60603 i

' Mr. J. Eenigenburg Plant Superintendent Dresden Nuclear Power Station Rural Route #I

. Morris, Illinois 60450 W. S. Nuclear Regulatory Commission Resident Inspectors Office Dresden Station Rural Route il Morris Illinois 60450 Chairman

' Board of Supervisors of Grundy County Grundy County Courthouse Morris, Illinois 60450 Regional Administrator Nuclear Regulatory Commission, Region !!!

799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Mr. Michael E. Parker, Chief Division of Engineering Illinois Department of Nuclear Safety 1035 Outer Park Drive, 5th Floor Springfield, Illinois 62704 i

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Mr. Thones J. Kovach Quad Cities Nuclear Power Station E.

. Comenwealth Edison Company.

Units 1 and 2 CC:

Mr. Stephen E. Shelton Vice President Iowa-1111ncis Gas and i

Electric Company P. C. Box 4350 Davenport, Iowa- $2808 Michael I. Miller, Esq.

4 Sidley and Austin One First National Plaza Chicago, Illinois 60603 Mr.. Richard Bax Station Manager Quad Cities Nuclear Power Station 22710 206th Avenue North i

Cordova, Illinois 61242 Resident Inspector U. S. Nuclear Regulatory Commission 22711 106th Avenue North Cordova, Illinois 61242 Chairman Rock. Island County Board of Supervisors 4

1504 3rd Avcnue Rock Island County Office Bldg.

I Rock Island, Illinois 61201

- Mr. Michael E. Parker, Chief Division.cf Engineering Illinois Departnent of Nuclear Safety 1035 Outer Park' Drive, Springfield,-Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 h

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