ML19309D160
| ML19309D160 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 03/14/1980 |
| From: | Crouse R TOLEDO EDISON CO. |
| To: | Heishman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML19309D150 | List: |
| References | |
| 1-119, NUDOCS 8004100091 | |
| Download: ML19309D160 (2) | |
Text
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TOLEDO EDISON March 14, 1980 RceooC%u v e,%3,.s Docket No. 50-346 New-emw Ligense No. NPF-3 Serial No. 1-119 Mr. R.
F. Ileishman, Chief Reactor Operations and Nuclear Support Branch U.
S. Nuclear Regulatory Commission Region 111 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. lleishman:
Toledo Edison acknowledges receipt of your February 21, 1980 letter (Log No.
1-314) and enclosures, Appendix A and Report 80-1, referencing apparent de-viation from Davis-Besse Nuclear Power Station Unit I commitment to the NRC listed as a " Deficiency" in Appendix A.
Following an examination of the item of concern, Toledo Edison herein offers information regarding the item of non-compliance.
Deficiency: Technical Specification 3.7.6.1 requires two independent Control Room Emergency Ventilation Systems to be operable in Modes 1, 2, 3 and 4.
The surveillance portion of that specification (TS 4.7.6.1.e. 3) requires a makeup f low of 300 cfm + 10% when supplying the Con-trol Room with outside air.
Lineup for Control Room Emergency Ventilation System #1 requires that switch ilA5261A on cabinet CDEllC be in the remote position.
Contrary to the above on January 24, 1980, while in Mode 1, the inspector found switch itA 5261A on cabinet CDEllC in the local position. This switch alignment would have prevented the Control Room Emergency Ventilation System #1 to be operated from the Control Room to provide a supply of outside air.
kva i 7 1960 THE TOLEDO E01 SON COMPANY EDISON PLAZA 300 MAOISON AVENUE TOLEOO. OHIO 43652 8004100 M
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Docket No.-50-346 License NO. NPF-3 Serial No.-1-119 i
Page 2
Response
The immediate corrective action taken was to place the Local /
Remote Switch RA 5261A in the remote position.
The switch is not spring loaded so that inadvertent bumping could result in misalignment. To avoid a repetition of the switch being' bumped i
out of position, the handle was removed and stored in an adjacent.
location.
Compliance by removal of the handle was met prior to March 7, 1980.
At the time of the deficiency, the fresh air inlet damper J
controlled by switch HA 5261A, was in the closed position
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which is its safe position. When the Control Room Emergency Ventilation System is actuated per procedure SP 1104.69, it is to be in the Recirculation Mode with the damper closed to prevent intake of airborne radioactivity or toxic gas.
Only 4
after outside air contaminants are reduced to an acceptable level would fresh air be introduced into the Control Room.
Yours very truly, f
w : :^
R..P. Crouse Vice President, Nuclear RPC/TDM/DAll/ daw i
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$8 l
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