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f P.O. Ilox 1700 llouston. 'Ibxas 77001 (713) 228 9211 Houston Lightinger Power. - - - - - - - - - - - - - - - - - - ~ ~ - - | |||
I' f P.O. Ilox 1700 llouston. 'Ibxas 77001 (713) 228 9211 Houston Lightinger Power. - - - - - - - - - - - - - - - - - - ~ ~ - - | |||
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October 12, 1989 7 | October 12, 1989 7 | ||
ST HL AE 3261 | ST HL AE 3261 File No.: C09.06, C20.02 l 10CTR50 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Electric Cenerating Station Unit 1 Request for Discretionary Enforcement of Technical Soecification 3. 8. 3 1 At 1533 hours on October 11, with the plant in Mode 3, H1AP declared the 25KVA inverter / rectifier 3E241EIV002 out of service because of a failed circuit board. Technical Specification 3.8.3 lg requires that the 120 Volt AC Vital Distribution Panel DP002 be energized from this inverter. The plant consequently entered ACTION statement b. The AC vital distribution panel was reenergized as required in ACTION b(1). However. H1AP does not expect to be able to reenergize the panel from its associated inverter in the 24 hours as required in ACTION b(2). | ||
File No.: C09.06, C20.02 l 10CTR50 U. S. Nuclear Regulatory Commission | |||
Attention: Document Control Desk Washington, DC 20555 South Texas Project Electric Cenerating Station Unit 1 Request for Discretionary Enforcement of Technical Soecification 3. 8. 3 1 At 1533 hours on October 11, with the plant in Mode 3, H1AP declared the 25KVA inverter / rectifier 3E241EIV002 out of service because of a failed circuit board. Technical Specification 3.8.3 lg requires that the 120 Volt AC Vital Distribution Panel DP002 be energized from this inverter. The plant consequently entered ACTION statement b. The AC vital distribution panel was reenergized as required in ACTION b(1). However. H1AP does not expect to be able to reenergize the panel from its associated inverter in the 24 hours as required in ACTION b(2). | |||
HLAP requests discretionary enforcement to allow continued operation of STP Unit 1 in Mode 3 for an additional 72 hours beyond the expiration of the initial ACTION statement, i.e., until 1533 hours, October 15, 1989. | HLAP requests discretionary enforcement to allow continued operation of STP Unit 1 in Mode 3 for an additional 72 hours beyond the expiration of the initial ACTION statement, i.e., until 1533 hours, October 15, 1989. | ||
The justification for this request is as follows: | The justification for this request is as follows: | ||
Line 34: | Line 28: | ||
. heat is minimal since the plant has been shutdown for refueling since early ' | . heat is minimal since the plant has been shutdown for refueling since early ' | ||
l- August. | l- August. | ||
8910250181 89,1037 gDR ADOCK 050004pg | 8910250181 89,1037 gDR ADOCK 050004pg | ||
* FDC f001 Il A1/006.NL9 A Subsidiary of Ilouston industries into:porated | * FDC f001 Il A1/006.NL9 A Subsidiary of Ilouston industries into:porated | ||
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. If you should have any questions, please contact Mr. A. W. Harrison at. t | . If you should have any questions, please contact Mr. A. W. Harrison at. t | ||
, - $12 972 7298.- l t - | , - $12 972 7298.- l t - | ||
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Nucioar Operations q y. | Nucioar Operations q y. | ||
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*..o Ho,uston lj ghting & Power Company | *..o Ho,uston lj ghting & Power Company e | ||
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File No.: C09.06, C20.02 Page 3 l t | |||
File No.: C09.06, C20.02 | cc: # | ||
Page 3 l | |||
, Regional Administrator, Region IV Rufos S. Scott h Nuclear Regulatory Commission Associate General Councel l 611 Ryan Plaza Drive, Suite 1000 Houston Lighting & Power Company , | , Regional Administrator, Region IV Rufos S. Scott h Nuclear Regulatory Commission Associate General Councel l 611 Ryan Plaza Drive, Suite 1000 Houston Lighting & Power Company , | ||
Arlington, TX 76011 P. O. Box 1700 ; | Arlington, TX 76011 P. O. Box 1700 ; | ||
Houston, TX 77001 Coorke Dick, Project Manager l U. S. Nuclear Regulatory Commission INPO [ | Houston, TX 77001 Coorke Dick, Project Manager l U. S. Nuclear Regulatory Commission INPO [ | ||
Washington, DC 20555 Records Center l 1100 circle 75 Parkway { | Washington, DC 20555 Records Center l 1100 circle 75 Parkway { | ||
Jack E. Bess Atlanta, CA 30339-3064 i | Jack E. Bess Atlanta, CA 30339-3064 i Senior Resident inspector Unir 1 , | ||
Senior Resident inspector Unir 1 , | |||
c/o U. S. Nuclear Regulatory Commission Dr. Joseph M. ;tendrie ! | c/o U. S. Nuclear Regulatory Commission Dr. Joseph M. ;tendrie ! | ||
P. 0.. Box 910 50 Be11 port Lane i Bay City, TX 77414 Be11 port, NY 11713 ; | P. 0.. Box 910 50 Be11 port Lane i Bay City, TX 77414 Be11 port, NY 11713 ; | ||
Line 184: | Line 103: | ||
P. O. Box 910 1100 West 49th Street .; | P. O. Box 910 1100 West 49th Street .; | ||
Bay City, TX 77414 Austin, TX 78756 3189 j | Bay City, TX 77414 Austin, TX 78756 3189 j | ||
'J. R. Newman, Esquire j Newman & Holtzinger, P. C. i 1615 L Street, N. W. t Washington, DC 20036 i t | 'J. R. Newman, Esquire j Newman & Holtzinger, P. C. i 1615 L Street, N. W. t Washington, DC 20036 i t | ||
R. L. Range /R. P. Verret ! | R. L. Range /R. P. Verret ! | ||
Central Power h Light Company ( | Central Power h Light Company ( | ||
P. O. Box 2121 '! | P. O. Box 2121 '! | ||
Corpus Christi, TX 78403 ! | Corpus Christi, TX 78403 ! | ||
R. John Miner (2 Copies) ! | R. John Miner (2 Copies) ! | ||
Chief Operating Officer l City of Austin Electric Utility i 721 Barton Springs Road i Austin, TX 78704 i R. J. Costello/M T. Hardt , | Chief Operating Officer l City of Austin Electric Utility i 721 Barton Springs Road i Austin, TX 78704 i R. J. Costello/M T. Hardt , | ||
City Public Service Board i P. O. Box 1771 j San Antonio, TX 78296 ; | City Public Service Board i P. O. Box 1771 j San Antonio, TX 78296 ; | ||
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Latest revision as of 17:07, 18 February 2020
ML19327B093 | |
Person / Time | |
---|---|
Site: | South Texas ![]() |
Issue date: | 10/12/1989 |
From: | Chewning R HOUSTON LIGHTING & POWER CO. |
To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
References | |
ST-HL-AE-3261, NUDOCS 8910250181 | |
Download: ML19327B093 (3) | |
Text
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f P.O. Ilox 1700 llouston. 'Ibxas 77001 (713) 228 9211 Houston Lightinger Power. - - - - - - - - - - - - - - - - - - ~ ~ - -
[
October 12, 1989 7
ST HL AE 3261 File No.: C09.06, C20.02 l 10CTR50 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Electric Cenerating Station Unit 1 Request for Discretionary Enforcement of Technical Soecification 3. 8. 3 1 At 1533 hours0.0177 days <br />0.426 hours <br />0.00253 weeks <br />5.833065e-4 months <br /> on October 11, with the plant in Mode 3, H1AP declared the 25KVA inverter / rectifier 3E241EIV002 out of service because of a failed circuit board. Technical Specification 3.8.3 lg requires that the 120 Volt AC Vital Distribution Panel DP002 be energized from this inverter. The plant consequently entered ACTION statement b. The AC vital distribution panel was reenergized as required in ACTION b(1). However. H1AP does not expect to be able to reenergize the panel from its associated inverter in the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as required in ACTION b(2).
HLAP requests discretionary enforcement to allow continued operation of STP Unit 1 in Mode 3 for an additional 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> beyond the expiration of the initial ACTION statement, i.e., until 1533 hours0.0177 days <br />0.426 hours <br />0.00253 weeks <br />5.833065e-4 months <br />, October 15, 1989.
The justification for this request is as follows:
The regulating transformer being used to supply Vital 120 VAC Distribution Panel 3E241EDP002 (Channel IV) is powered from Class IE 480V Motor Control Center (MCC) E1C2. The source of on site power for this MCC is Standby Diesel Generator (SDG) 13 (Train C). Use of the regulating transformer as the supply for panel EDP002 for this time does not affect General Design Criterion 17 considerations, does not cause loss of any required loads, does not affect SDG reliability, and does not affect other safety related trains. The events which would cause loss of power to panel EDP002 are a loss of offsite power coincident with SDG 13 failure to start.
The probability of these events occurring over the brief extension of time being requested is very small. Even in this unlikely scenario, the plant can be brought to cold shutdown without power to panel DP002. In addition, decay ,
. heat is minimal since the plant has been shutdown for refueling since early '
l- August.
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File No.: C09.06, C20.02 Page 3 l t
cc: #
, Regional Administrator, Region IV Rufos S. Scott h Nuclear Regulatory Commission Associate General Councel l 611 Ryan Plaza Drive, Suite 1000 Houston Lighting & Power Company ,
Arlington, TX 76011 P. O. Box 1700 ;
Houston, TX 77001 Coorke Dick, Project Manager l U. S. Nuclear Regulatory Commission INPO [
Washington, DC 20555 Records Center l 1100 circle 75 Parkway {
Jack E. Bess Atlanta, CA 30339-3064 i Senior Resident inspector Unir 1 ,
c/o U. S. Nuclear Regulatory Commission Dr. Joseph M. ;tendrie !
P. 0.. Box 910 50 Be11 port Lane i Bay City, TX 77414 Be11 port, NY 11713 ;
J. 1. Tapia D. K. Lacker i Senior Resident inspector . Unit 2 Bureau of Radiation Control !
c/o U. S. Nuclear Regulatory Commission Texas Department of Health !
P. O. Box 910 1100 West 49th Street .;
Bay City, TX 77414 Austin, TX 78756 3189 j
'J. R. Newman, Esquire j Newman & Holtzinger, P. C. i 1615 L Street, N. W. t Washington, DC 20036 i t
R. L. Range /R. P. Verret !
Central Power h Light Company (
P. O. Box 2121 '!
Corpus Christi, TX 78403 !
R. John Miner (2 Copies) !
Chief Operating Officer l City of Austin Electric Utility i 721 Barton Springs Road i Austin, TX 78704 i R. J. Costello/M T. Hardt ,
City Public Service Board i P. O. Box 1771 j San Antonio, TX 78296 ;
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A1/006.NL9 ;
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