IR 05000498/1992029
| ML20127G644 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 01/15/1993 |
| From: | Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Hall D HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 9301220025 | |
| Download: ML20127G644 (5) | |
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. gkA 88%, UNITE D $f ATES g NUCLEAR REGULATORY COMMISSION l ' #' o RiolON IV
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Docket flos. 50-498 50-499 License Nos. tJPF-76 flPF-80 Houston Lighting & Power Company ATTN: Donald P. Hall, Group Vice President, Nuclear P.O. Box 1700 Houston, Texas 77251 Gentlemen: SUBJECT: f4RC INSPECTION REPORT (10. 50-498/92-29; 50-499/92-29 Thank you for your letters of December 18 and 23,1992, in response to our letter and Notice of Violation dated November 25, 1992. We have reviewed your replies and find them responsive to the concerns raised in our flotice of Violation. We will review the implementation of your corrective actions during a future inspection to determine whether full compliance has been achieved and will be maintaine
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L ueN d Bill Beach, Director l Division of Reactor Projects l l CC: l Houston Lighting & Power Company ATTN: William J. Jump, Manager Nuclear Licensing P.O. Box 289 Wadsworth, Texas 77483 l l l l l h j
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Houston Lighting & Power Company -2-City of Austin Electric Utility Department ATTN: J. C. Lanier/M. B. Lee P.O. Box 1088 Austin, Texas 78767 City Public Service Board ATIN: R. J. Costello/M. T. Hardt P.O. Box 1771 San Antonio, Texas 78296 Newman & Holtzinger, P. < ATTN: Jack R. Newman, Es L Street, NW Washington, D.C. 20036 Central Power and Light Company * ATTN: 0. E. Ward /T. M. Puckett P.O. Box 2121 Corpus Christi, Texas 78403 INPO :
-Records Center :
1100 Circle 75 Parkway ; Atlanta, Georgia- 30339-3064 Mr. Joseph M. Hendrie 1 50 Bellport Lane Bellport, New York 11713
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Bureau of Radiation Control State of Texas 1101 West 49th Street Austin, Texas 78756-Judge, Matagorda County Matagorda County Courthouse - 1700 Seventh Street Bay City, Texas 77414
. Licensing Representative Houston Lighting.& Power Company ,
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Houston Lighting & Power Company : ATTN: Rufus S. Scott, Associate v General Counsel ' P.O. Box 61867 .; Houston, Texas 77208
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l N 30 j9fd y ST-!!L-AE-4 27 8 File lio.: G02.04 10CFR2.201 M IV U. S. liuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Unit 1 and 2 Docket llos. ST!i 50-498; ST11 50-499 Reply to 110tice of Violation 9229-01 Regarding Failure to Declare an Unusual Event in Accordance with F2qrgency RenP.QDEC.. Procedures
!!ouston Lighting & Power Company (IIL&P) has reviewed flotico of Violation 9229-01 dated flovember 25, 1992, and submits the attached repl If you have any questions, please contact 14r. C. A. Ayala at (512) 972-8628 or no at (512) 972-792 .
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Vice President liuclear Genera',lon RAD /ag Attachment: Reply to liotice of Violation 9229-01 lTh 93-D% IR\92 339.00.' A Subidi'ny of llouston Industrin incorporitted
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llouston Lighting & Power Company , ST-i!L-AE- 4 2 7 8 South Texa: Project Electric Generating Station Filo No. t G02.04 Page 2 cc: Regional Administrator, Region IV Rufus S. Scott Nuclear Regulatory Commission Associato General Counsel 611 Ryan Plaza Drivo, Suito 400 !!ouston Lighting & Power Company Arlington, TX 76011 P. O. Box 61867 Houston, TX 77208 George Dick, Project Manager U.S. Nuclear Regulatory Commission INPO Washington, DC 20555 Records Contor 1100 circle 75 Parkway J. I. Tapia Atlanta, GA 30339-3064 Senior Resident Inspector c/o U. S. Nuclear Regulatory Dr. Joseph M._Hendrio Commission 50 Bo11 port Lano - P. O. Box 910 Bo11 port, NY 11713 Bay City, TX 77414 D. K. Lacker R. Newman, Esquiro Bureau of Radiation Control Newman & Holtzinger, Texas Department of licalth 1615 L Stroot, West 49th Stroot Washington, DC 20036 Austin, TX 78756-3189 D. E. Ward /T. M. Puckett contral Power and-Light Company P. O. Box 2121
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Corpus Christi, TX 78403 C. Lanior/M. D. Leo City of Austin Electric Utility Department P.O. Box 1008 Austin, TX 78767 K. J. Fiedler/M. T. liardt > City Public Servico Board P. O. Box 1771 San Antonio, TX 78296-Rovised 10/11/91 L4/NRC/
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Attachment 1 ST-llL- AE-4 2 7 8 Page 1 of 2 Statement of Violation: failure to follow an Approved Procedtt Technical Specification G.8. requires that written procedures shall be established, implemented, and maintained for Emergency Plan implementatio This is accomplished, in part, by Procedure OERP01-ZV-I!101, Revision 0, " Emergency Classification."
- Addendum 1 of Procedure OERP01-ZV-I!i01 requires that an Unusual Event be declared when all engineered nafety features diesel generators are inoperabl Contrary to the above, on October 12, 1992, Unit 1 control room operators failed to declare an Unusual Event until 4 hours and 22 minutes after it was determined that all three engineered safety features diccol generators were inoperabl This is a Severity Level IV violatio (Supplement I)
(498;499/9229-01)
I Itouston Idghtina & Power Position: IIL&P concurs that the cited violation occurre II ILeason for Viojation: The cause of the failure to immediately declare an Unusual Event was that Control Room operators did not recognize that the Emergency Classification prc.cedure , OERP01-ZV-IN01, required entry into an Unusual Event. Operators are trained on the requirements of the Emergency Classification procedure, however, they are not required to memorize i When a component is declared inoperable it is entered in the Operability Tracking Log (OTL) . The standard.OTL for Standby Diesel Generators (SDGa} did not provide any guiCance which would prompt operatorc to review the Emergency Classification procedur In addition, there is no requirement in the Technical Specifications for an SDG to be operable when the Unit is in no mode (no fuel in the reactor vessel) . If all three SDGs were inoperable in Modes 1 through 4 then a shutdown and/or cooldown to Mode 5 would be required by Technical Specifications. Operations personnel are confident that if this event occurred in Modes 1 through 4 then Control Room perconnel would have recognized that an Unusual Event should be entere The Emergency Classification procedure does not account for the different mode requirements of Technical Specification IRip2-330.001 _ _ _ _ - - _ _ _ _ _ _ . _ _ - . .__ ___-__-._- - __---_--_ _ ____-_-_.- _--__-__- - -_- -.._- -_----.-._ -__- _ - ________-____ _ _ __.___ __ _ - -
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Attachment 1 ST-llL-AE-4278 l Page 2 of 2 I Corrective Actionn: ; The following actions are being taken to prevent recurrence The Operability Tracking Log for SDGs was revised to require the operators to review the Emergency Classification procedure for possible Emergency Plan entry requirement . The Emergency Classification procedure was reviewed to determine if any other conditions could exist which would result in the f ailure to enter the proper Emergency Action ' Level. As a result, OpOp04-DJ-0001, Loss of Class 1E 125 VDC Power, was revised to reference the Emergency Classification procedur ! Shift Supervisors for both Units completed required , reading of the Emergency Classification procedur . This event will be included in Licensed operator Requalification training. Training will be completed by March 12, 199 . Lesson Plans for Emergency Plan implementing procedures will be revised by January 25, 1993 to ~ emphasize that Emergency Plan requirements are in effect at all times, including no mod Date of Full Comollance: HL&P is in full compliance at this time. Future training will reinforce Emergency Classification requirement . IM 92-339. 001
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a, J, O gg j' ST-ilL-AE-4 2 8 3 File No.: c02.04 10CFR2.201 REGtON nr ~ U. S. liuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Unit 1 & 2 Docket Nos. STN 50-498, STN 50-499 Reply to Notice of Violation 9229-02 Regarding Two Examples of Failure to Follow Approved Procedures Resultinct in the Inadvertent Start of ESF Eq.uipment flouston Lighting & Power Company (llL&P) has reviewed Notice of Violation 9229-02 dated November 25, 1992, and submits the attached repl Example 1 of the violation has been addressed as the subject of Licensee Event Report 92-016 (attached).
If you have any questions, please contact Mr. C. A. Ayala at (512) 972-8628 or me at (512) 972-792 . W. II. Kinsey U Vice President, Nuclear Generation RAD /ag Attachments: 1) Reply to Notice of Violation 9229-02 2) Licensee Event Report 92-016 (Unit 1)
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Houston Lighting & Power Company ST-HL-AE- 4 2 8 3 South Texas oject Dectric Generating Station Pilo No.I G02.04 Page 2 ces Regional Administrator, Region IV Rufus S. Scott Nuclear Regulatory Commission Associato General Counsel 611 Ryan Plaza Drivo, Suito 400 Houston Lighting & Power Company Arlington, TX 76011 P. O. Box 61867 Houston, TX 77208 George Dick, Project Manager U.S. Nuclear Regulatory Commission INPO Washington, DC 20555 Records Contor 1100 circio 75 Parkway J. I. Tapia Atlanta, GA 30339-3064 Senior Resident Inspector c/o U. S. Nuclear Regulatory Dr. Joseph M. Hendrio commission 50 Bollport Lano P. O. Box 910 Bo11 port, NY 11713 Bay City, TX 77414 D. K. Lacker J. R. NcWman, Esquiro Bureau of Radiation Control-- Howman & Holtzinger, Texas Department of Health 1615 L Stroot, West 49th Street Washington, DC 20036 Austin, TX 78756-3189~ D. E. Ward /T. M. Puckett Contral Power and Light Company P. O. Box 2121 Corpus Christi, TX 78403 J. Lanior/M. B. Loo City of Austin Electric Utility Department P.O. Box 1088 Austin, TX 78767 K. Fiedlor/M. T. Hardt City Public Servico Board s P. O. Box 1771 , San Antonio, TX 78296
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Attachment i ST-HL-AE-4283 Page 1 of 3 Statement of Violation:
' Failure to Follow Anoroved Procedures Technical Specification 6.8. requires that written procedures shall be established, implemented, and maintained for those activities recommended in Appendix A of Regulatory Guide (RG) 1.33, Revision 2, February 197 Three (sic)
examples of violating this requirement are stated below: RG 1.33, Appendix A, Item 3.e, recommends operating procedures for the component cooling water syste This is accomplished, in part, by Procedure 1PCP03-ZC-0002, Revision 0, " Chemical Addition to Component Cooling Water System."
Step 4.2.11 of Procedure IPCP03-ZC-0002 requires plant operators to place the control switch for the Domineralized Water Makeup Valve 1-CC-LV4501 to the proper position for plant operation (automatic) following chemical addition to the component cooling water (CCW) surge tan Contrary to the above, on October 3, 1992, Unit 1 control room operators fai. led to restore Valve 1-CC-LV4501 to the automatic position - following chemical addition to the component cooling water surge tan Consequently, on October 4, 1992, the Train A component cooling water system automatically isolated on low surge tank level and the Train C CCW Pump started because of low system pressur . RG 1.33, Appendix A, Item 3.s(2) (a) , recommends operating procedures for onsite emergency power source This is accomplished, in part by Procedure OPOF02-DG-0002, Revision 0, " Emergency Diesel Generator 12(22)."
Step 4.11 of Procedure OPOP02-DG-0002 requires depr_essing-the release pushbutton prior to resetting the emergency stop pushbutto Contrary to the above, on October 15, 1992, a Unit 1 control room operator failed to depress the release pushbutton prior to resetting the emergency stop pushbutto Consequently, Emergency Diesel Generator 12 inadvertently started when the emergency stop was rese This is a Severity Level IV violatio (Supplement I)
(498;499/9229-02)
IRt92-345.001
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l Attachment 1 ST-HL-AE-4283 Page 2 of 3 I Itouston Lichtinri & Power Position: 11L&P concurs that the cited violation occurre II Roacon for Violation: Sco attached LER 92-01 . The cause of the inadvertent Standby Diesel Generator (SDG) start was the failure of the Reactor Operator (RO) to follow the procedure precautions. The RO reviewed the procedure in preparation for the evolution, however, he did not consult the procedure during restoration of the SDG and did not recall the procedure precautio I Correqtive Actions: See attached LER 92-01 a. The SDG operating procedures were revised to include specific steps to restore the SDG, including releasing the SDG from the emergency modo prior to resetting the emergency stop pushbutto b. The personnel involved were counseled in accordance with the Constructive Discipline Progra c. Engineered Safety Features (ESP) actuations were discussed with each crew by Operations Managemen d. A Unit Supervisor mooting was held on October 19 to discuss supervisory oversight expectation c. A new interim procedure review and feedback form was developed to be completed prior to and after each evolution. The form provides ESF awareness questions and c spe'ific feedback for procedure improvemen f. Engineering will evaluate a design change of the SDG circuitry to automatically release the SDG from the emergency mode when the SDG is tripped using the emergency stop pushbutton by January 31, 199 The design change will be dispositioned by management by February 26, 199 IR\92-345,001
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l* . T h ATTACHMD)4f3 ST HL AE '/ The Light "." ' on non m wadi-onh, Ton 77m cllousion o mp a ny 5"'hI'"' Lighting te l'ower f",jen accuic ceneniing statin tiovember 03, 1992 ST-IIL-AE-4252 File lio. : G26 10CFR50.73
' S. Iluclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Unit 1 Docket llo. ST!I 50-498 Licensco Event Report 92-016 Unplanned ESF Actuation of a Component Cooling Water Eu.pn on October 4, 1992 due to an Inadeaunto Procedur Pursuant to 10CFR50.73, llouston fighting & Power (IIL&P)
submits the attached Unit 1 Licensco Event Report (LER 92-016) regarding an unplanned Engineered Safety Features (ESP) actuation 1992, due to of a Component Cooling Water (CCW) pump on October 4, an inadequate" procedure. This event did not have adverse effect on the health and safety of the publi On llovember 3, 1992, an extension of the duc date of this and granted, by letter to llovember 5, 1992, was requested Mr. M. Satorius of NRC Region I If you should have any questions on this matter, please contact Mr. C. A. Ayala at (512) 972-8628 or me at (512) 972-720 )(1, William J. Jump General Manager, Nuclear Licensing UMP /ag Attachment: LER 92-016 (South Texas, Unit 1)
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Regional Administrator, Region IV Rufus S. Scott Duclear Regulatory Commission Associate General Counsel 611 Ryan Plaza Drive, Suite 400 Houston Lighting & Power company Arlington, TX 76011 P. O. Box 61867 Houston, TX 77208 George Dick, Project Manager U.S. Nuclear Regulatory Commission INPO Washington, DC 20555 Records Center 1100 Circle 75 Parkway J. I. Tapia Atlanta, GA 30339-3064 Senior Res3 dent Inspector c/o U. S. Nuclear Regulatory Dr. Joseph M. Hendrie Commission 50 Bellport Lane Brillport, NY 11713 P. O. Box 910 Bay City, TX 77414 D. K. Lacker J. R. Newman, Esquire Bureau of Radiation Control Newman & Holtzinger, Texas Department of Health 1615 L Street, West 49th Street Washington, DC 20036 Austin, TX 78756-3189 D. E. Ward /T. M. Puckett Central Power and Light Company P. O. Box 2121 Corpus Christi, TX 78403
- C. Lanicr/M. B. Lee City of Austin Ilectric Utility Department P.O. Box 1088 hustin, TX 78767 E. J. Fiedler/M. T. Hardt City Public Ser ice Board P. O. Box 1771 San Antonio, TX 78296 Revised 10/11/91 L4/NRC/
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"* " Unplanned ESF Actuation of a Component Cooling Water Pump on October 4. 1992, Due to Inadequate Procedure atPORT DATE 476 OTHER f ACaLitet5 GNVOLVED 101 tvletT DAf t (9 (E n sevnestit (61 TIAR C'L'" ha uts DoCat1 Nuunnts MONice DAY vtAR VIAR ,
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$UP9LtW4NTAL mtPORT tartCTto (143 SUtutS5 SON 4tS 199 e. e.nwoon IJr!!CTED sv0uts$s0N psits No l l l AufmaCfm em - w.,,,..- ,,e ,,.-. - . ie,on On October 4, 1992, Unit 1 was in Mode 6 during a refueling outag The Demineralir.ed Water makeup valve to the Component Cooling Water (CCW)
surge tank had been isolated the previous -day, in preparation for an addition of' corrosion inhibitor. At_approximately 0318 hours, Unit 1-experienced an unplanned Engineered Safety Features (ESF) actuation due to an automatic pump start of CCW components caused by a low level in the-CCW surge tank. The appropriate of f-normal procedure was implemented an level in the surge tank was restored without further incident. All ESF equipment operated as designed. This event was the result of a failure to reopen the CCW surge tank makeup valve following a- chemical addition.- The immediate iause of this event is less than adequate communication An additional cause was the lack of a procedural step to verify valve positio This event will be included.in requalification training for licensed and non-licensed operators,_ chemical operators and chemistry technician The procedure associated with this surveillance will- be revised to include a requirement for verification when - manipulatin safety related valve Additionally, a review will be performed- of - procedures that contains Operations and Chemistry interfaces to ensure adequate independent verification is specified for those systems that-require-verification of valve-positionin LER\92297002.ul
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0 li l6 - 0b ob O l4 South Texas. Unit 1 7 EXT M par, anos. & W se eddrmmst NAC ,orm Jena 'st (17) DESCRTPTION OF EVENTL On October 4,1992, Unit 1 was .in Mode 6 during a refueling outag At approximately 0318 hours, Unit 1 experienced an unplanned Engineered Safety Features (ESP) actuation due to an automatic pump start of Train "C" CCW components caused by a low level in the CCW surge tan On October 3, 1992, at approximately 1530 hours, the Domineralized Water makeup valve to the Component Cooling Water (CCW) surge tank was isolated in preparation for an addition of corrosion inhibito The procedure in use directed the Chemical Technician to notify the control Room upon the completion of the chemical addition and to further instruct the Control Room Operator to place the makeup valve in the proper positio From the statements made by the Chemical Technician, the requirement to reposition the valve was relayed by the Chemical Technician toNotheControl Control Room and Room Operator acknowledged by an unknown individua on shif t at the time recalls receiving direction to close the valve but all personnel interviewed acknowledged that-multiple refueling outage activities were in progres The CCW system supplies both ESF and non-ESF Theloads CCWand surge contains uank isa surge tank to maintain system inventor compartmented into three equal volumes by internal bafflesMakeup such that a leak on any one train will not disable all three.from the to the CCW surge tank is automatically initiated at a preset value through the Domineralized Water header Domineralized Water makeup valv In the event that the level continues to decrease, non-ESF components are isolated and the CCW trains are isolated from each other via automatic valve closur Automatic start of the Standby CCW pump occurs when the CCW common header pressure drops to a preset setpoin At approximately 0318 hours,on October 4, 1992, Unit 1 experienced a low level in the CCW surge tank and an automatic start of the C train (1C) CCW pump. Prior to this time, CCW pump 1A was providing needed CCW header flow for refueling outage heat loads, while IC was in standby, and 1B was in maintenance. The low level was caused by normal system losses coupled with the lack of makeup flow. Prior to reaching the non-ESF isolation setpoint, an alarm should have been generate However, this alarm was inoperative LER\92297002.U1
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01116 - 010 0h 0 l4 South Texas c Unit 1 stxwe ,u < ~ m m w m<wsm DESCRIPTION OF EVENT: (Con't) Once the level reached the due non-ESFto a loose microswitch isolation connection.the required valves closed isolating setpoint, Low pressure on the header caused the non-ESF header from Train The off-normal procedure, Loss the actuation of the Train C pum of component Cooling Water, was implemented and level in the surge tank was restored without further inciden CAUSE OF EVENT:
'This event was the result of a failure to reopen the CCW surge tank fill valve following a chemical addition. The immediate An cause of additional this event is less than adequate communication cause was the lack of a procedural step to verify valve positio Reliance on a single procedural step notifying the operator of the need for valve restoration ir not sufficien This event indicates the potential that other procedures not have adequate involving interfaces may operations and Chemistry verification specifie The cause of the annunciator failure was a loose microswitch connection was repaired and tested connectio This The level switch that generates the alarm had not satisfactoril for been calibrated since 1987 and the Preventive Maintenance (PM)
both units had been delete ANAI,YSIS OF EVENT: The CCW pump start is considered to be an ESF actuation The CCW system and is reportable pursuant to 10CFR50.73 (a) (2) (iv) . supports the ESF functions of systems asAlldescribed ESF equipment in the STPEGS operated Updated Final Safety Analysis Repor as designe The failure of the annunciator exacerbated the incident but did not constitute a significant challenge to the CCW syste CORRECTIVE ACTIONS: CCW surge tank level was recovered and the CCW system was realigned in accordance with procedur LER\92277002.01 _ _ _
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O li l 6 -- O 10 0 l4 South Texas, Unit 1 0 1510 l o l o 141918 9 12 YEXT or swe spee e s.ea.4 ese e***ua*%8C #wm 20Wim CORRECTIVE ACTIONSt (Con't) This event will be included in requalification training for licensed and non-licensedThis operators, action chemical will be operators and completed by chemistry technician June 11, 199 . The procedures associated with chemistry activities concerning the Component Cooling Water system will be revised to include a requirement for verification when manipulating safety related 1992 valves. These procedures will be revised by December 2, A review will be performed of procedures that contain Operations and' Chemistry interfaces to ensure that adequate independent systems that require verification is specified for those verification of valve199 posivienin This review will be completed by June 3, Any discrepancies identified will be corrected in a timely fashio . The Unit 1 PM The for the low level alarm level switch has been i reactivate Unit 2 PM will be developed by January 28, 199 . HL&P will perform a review of ems associated with control room annunciators to determine whether the annunciator instrument loops receive a periodic calibration. This comprehensive review will be completed by August 11, 199 ADDITIONJT,INFORMATION: Unplanned ESF actuations involving CCW pump starts that have been reported to the NRC within the last two years were: Unit 1 LER 92-005 Unplanned ESF actuation due to a CCW pump , e ' start due to an inadequate procedur * Unit 1 LER 92-010 Inadvertent ESF actuation due to a CCW pump start due to lack of procedural guidanc Unit 1 LER 92-015 Unplanned ESP actuation due to a CCW pump
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start due to operator inattentio IIR\92297002.U1
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