ML19323H672: Difference between revisions

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A et2) 456 sooo a s.. 4. ~
Iu7"' "                                                    DUQUESNE LIGHT COMPANY Beaver Valley Power Station Post Office Box 4 Shippingport, PA 15077
Iu7"' "                                                    DUQUESNE LIGHT COMPANY Beaver Valley Power Station Post Office Box 4 Shippingport, PA 15077 June 9, 1980 BVPS: JAW:682 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Special Report Mr. B. H. Grier, Director of Regulation United States Nuclear Regulatory Commission
* June 9, 1980 BVPS: JAW:682 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Special Report Mr. B. H. Grier, Director of Regulation United States Nuclear Regulatory Commission
  ,
           , Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406
           , Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406


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On May 15, 1980, the meteorological (MET) instrumentation computer was moved from the DLCo Headquarters Building in Pittsburgh to a location near the site at the MET Tower. On May 29, 1980, station personnel determined that the MET channels were not responding properly to the automatic calibration signals which are placed into the system hourly. It was found that the computer was loading down the MET system outputs and causing them to read erroneously.
On May 15, 1980, the meteorological (MET) instrumentation computer was moved from the DLCo Headquarters Building in Pittsburgh to a location near the site at the MET Tower. On May 29, 1980, station personnel determined that the MET channels were not responding properly to the automatic calibration signals which are placed into the system hourly. It was found that the computer was loading down the MET system outputs and causing them to read erroneously.
In troubleshocting the proble=, it was found that when the computer was moved, there were output resistors (for telemetering signal conditioning) that should have been removed. The output resistors were icmediately removed and the system calibration checked. The system calibration was verified satisfactory on May 30, 1980.      .
In troubleshocting the proble=, it was found that when the computer was moved, there were output resistors (for telemetering signal conditioning) that should have been removed. The output resistors were icmediately removed and the system calibration checked. The system calibration was verified satisfactory on May 30, 1980.      .
Very truly yours,
Very truly yours, I                                      h J. A. Werling                                                        -
                                                                                              .
I                                      h J. A. Werling                                                        -
Superintendent                            ,p
Superintendent                            ,p
                                                                                                                       $o              \
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8006160
8006160
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            .                          .
          *  *
                                                  .
Mr. B. H. Grier                                ,
Mr. B. H. Grier                                ,
June 9, 1980                                                .
June 9, 1980                                                .
BVPS: JAW:882
BVPS: JAW:882 Page 2 cc: Director of Management & Program Analysis United States Nuclear Regulatory Commission Washington, D. C. 20555                                    , ,.      _
                                                                                            -- -
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                                                                              -
cc: Director of Management & Program Analysis United States Nuclear Regulatory Commission Washington, D. C. 20555                                    , ,.      _
D. L. Wigginton, BVPS Licensing Project Manager                                          '
D. L. Wigginton, BVPS Licensing Project Manager                                          '
United Statas Nuclear Regulatory Commission Washington, D. C. 20555 D. A. Beckman, Nuclear Regulatory Commission, BVPS Site Inspector _
United Statas Nuclear Regulatory Commission Washington, D. C. 20555 D. A. Beckman, Nuclear Regulatory Commission, BVPS Site Inspector _
G. A. Olson, Secretary, Prime Movers Committee - EEI                                        ,
G. A. Olson, Secretary, Prime Movers Committee - EEI                                        ,
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Latest revision as of 02:30, 1 February 2020

Ro:On 800529,meteorological Instrumentatiion Computer Channels Found Not Responding Properly to Automatic Calibr Signals.Caused by Output Resistors Not Being Removed During 800515 Move.Resistors Removed & Sys Calibr Verified
ML19323H672
Person / Time
Site: Beaver Valley
Issue date: 06/09/1980
From: Werling J
DUQUESNE LIGHT CO.
To:
References
BVPS:JAW:882, NUDOCS 8006160041
Download: ML19323H672 (2)
v • d • e


Text

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A et2) 456 sooo a s.. 4. ~

Iu7"' " DUQUESNE LIGHT COMPANY Beaver Valley Power Station Post Office Box 4 Shippingport, PA 15077 June 9, 1980 BVPS: JAW:682 Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Special Report Mr. B. H. Grier, Director of Regulation United States Nuclear Regulatory Commission

, Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

In accordance with BVPS Technical Specification 3.3.3.4.b, Meteorological Instrumentation, the following special report is submitted.

On May 15, 1980, the meteorological (MET) instrumentation computer was moved from the DLCo Headquarters Building in Pittsburgh to a location near the site at the MET Tower. On May 29, 1980, station personnel determined that the MET channels were not responding properly to the automatic calibration signals which are placed into the system hourly. It was found that the computer was loading down the MET system outputs and causing them to read erroneously.

In troubleshocting the proble=, it was found that when the computer was moved, there were output resistors (for telemetering signal conditioning) that should have been removed. The output resistors were icmediately removed and the system calibration checked. The system calibration was verified satisfactory on May 30, 1980. .

Very truly yours, I h J. A. Werling -

Superintendent ,p

$o \

j- _

8006160

Mr. B. H. Grier ,

June 9, 1980 .

BVPS: JAW:882 Page 2 cc: Director of Management & Program Analysis United States Nuclear Regulatory Commission Washington, D. C. 20555 , ,. _

D. L. Wigginton, BVPS Licensing Project Manager '

United Statas Nuclear Regulatory Commission Washington, D. C. 20555 D. A. Beckman, Nuclear Regulatory Commission, BVPS Site Inspector _

G. A. Olson, Secretary, Prime Movers Committee - EEI ,

s S

7N '

4 A bO

-w%

O e

aW

_r.

4 m,

4 e rep, .** ***- g

~.

-n.. e

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