ML20093C264

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Responds to IE Bulletin 84-02, Failures of GE-Type Hfa Relays in Use in Class 1E Safety Sys. One Hundred Eight (108) of 159 Relays in safety-related Applications Found to Have Lexan Coil Assemblies.Assemblies Will Be Replaced
ML20093C264
Person / Time
Site: Clinton Constellation icon.png
Issue date: 09/28/1984
From: Hall D
ILLINOIS POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-84-02, IEB-84-2, U-0742, U-742, NUDOCS 8410100449
Download: ML20093C264 (1)


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0982-L LO8-84 (09-28 )-L biLLIN018 POWER COMPAN IP . CUNTON POWER STATION. P.O. BOX 678. CUNTON. ILUNOIS 61727 September 28, 1984-1 - . _ _ - . . .

~i

,- - Docket No. 50-461 .

Mr. James G.' Keppler LW '

. Regional Administrator

' e . Region-III U..S.'; Nuclear' Regulatory Commission

'799 Roosevelt Road S. - Glen Ellyn, Illinois 60137 y 1 '

Subject:

IE'Bulletin 84-02, " Failures of General Electric Type HFA

^ '

Relays in Use~in Class IE Safety Systems" 4

e

Dea'r Mr.'Kappler

_'In response to IE Bulletin 84-02, drawings and specifications were

. reviewed to verify the' location of all HFA relays manufactured by General' Electric--Company used at the Clinton Power Station (CPS). In

- all,-528 HFA relays were. inspected and one hur. dred eight.(108) out of

~

..". _one hundred fifty-nine_(159) relays in safety-related applications were found;to have Lexan coil assemblies. These will be replaced with the 1, _  ; Century Series HFA relays prior to the initial fuel load date. The remaining safety-related HFA relays were found to contain propar coil

- assemblies (Century Series).-

All_ relays used in safety-related applications at CPS will be

,4 - - qualified under programs that satisfy-the environmental and seismic

' criteria'specified in the IEEE-323-1974 and IEEE-344-1975 standards. An

' existing plant procedure (CPS 0AP1008.01N) ensures that all safety-related spare or_ replacement parts are identified and controlled thus

y. preventing the replacement of safety-related relays with unqualified models.

' ' * *

  • I herebyLaffirm that the information in this letter is correct to

. the best of.my knowledge. Please let us hear if you have any questions Jon this matter.

Sincerely yours,

. P. 1

~ Vice President V ..

I'g6 PMI/RTR/la ec: : B. L. : Siegel, NRC Clinton Licensing Project Manager NRC Resident Office

" . Illinois Department of Nuclear Safety NRC Document Control Desk, Washington, D. C. 20555 ((

' 449 840928 31!E4lIIg 4}O DOCK 05000$k p OCT g

_