ML20044E037

LER 93-005-01:on 930214,control Room Operator Left CR Unmanned During Mode 4 Operation for 41 S.Caused by Inappropriate Action by Unit Supervisor.Event Will Be Included in Licensed Operator Requalification Training

ML20044E037
Person / Time
Site:	South Texas
Issue date:	05/14/1993
From:	Pinzon J HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20044E036	List: ML20044E035 ML20044E037
References
LER-93-005, LER-93-5, NUDOCS 9305210207
Download: ML20044E037 (3)

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IIC FORM 366 U.S. NUCLEAR REGULATORY COMMISSIOM APPROUED BY OMB NO. 31504104 (I8:1 EXPIP.ES 5/31/95

. ESTIMATED BURDEN PER RESPONSE TO COMPLY WITH THIS fNFORMATION COLLECTION REOJEST- 50.3 HRS. FORWArtD LICENSEE EVENT REPORT (LER) COMueNr5 ReGARDm BuRxN ES,uATE TO THE iNrORMuoN AND RECORDS MANAGEMENT BFANCH (MNBB 7714), U.S. NUCLEAR .*

REGULATORY OOMMfSSION, WASHINGTON. DC 20555 0001. AND TO THE PAPERWORK REDUCTION PROJECT (3150-01041. OFRCE OF >

MANAGEMENT AND BUDGET, WASHfN3 TON, DC 20$03. '

(See reverse for required number of digits / characters for each block) f ACILITV NAME (1) DOCKET NUMBEM (2) i South Texas, Unit 2 05000 499 PAGE 1 OF U (3[ 3

'" Control Room Unmanned by a Senior Licensed Operator EVENT DATE (5) LER NUMBER (6'i REPORT NUMBER (7) OTHER FACILITIES INVOLVED (8) ,

FAC:UTY twAME DOCKET NUMEiLR j SEQUENTA REASION

""" ^ ^

uoicH DAY YEAR YEAR ~

NUMBER NUMBER 05000 FAGiUTY NAME DOCKET NUMBER 02 14 9' 3 93 -- 0 0 5 01 05 14 9 3 05000 OPERATING THiS REPORT IS SUBMITTED PURSUANT TO THE REQUtREMENTb OF 10 CFR 1: (Check one or more) (11) ,

MODE (9) 4 l 20.402(b) 20 405(c) 50.73(a)(2)(iv) 73.71(b)

POWER 20.405(a)(1){i) 50 3C(c)(1) 50.73(a)(2)(v) 73.71(c)  !

LEVEL (10) 0% 20 405(a)(1)(n) 50.36(c)(2) 50.73(a)(2)(vii) OTHER }

X 50.73(a)(2)(i) (speci*y 6n Abstract I 20 405(a)(1)(ui) 50.73(a)(2)(viii}{A) below and an Text, NRC ,

20 405 ta)(1}{iv) 50 73(a)(2)(n) 50.73(a)(2)(vin)(B) Ferm assAj 20.405(a)(1)(v) 50.73(a)(2)(ni) 50.73(a)(2)(x) 1 LICENSEE CONTACT FOR THIS LER (12) fpME TELEPHONE NUMBER (inclu:!e Area Code) ,

Jairo Pinzon - Senior Engineer (5 1 2) 972-8027 l COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (13) j CAUSE SYSTEM COMPONENT MANUFACTURER CAUSE SYSTEM COMPONENT MANUFACTURER I

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6 SUPPLEMENTAL REPORT EXPECTED (14) EXPECTED MONTH DAY YEAR f Yts SUBMISSION

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(!! yn, compwe EXPECTED SUBM$SION DA*E) X DATE (15)

IBSTRACT (Limit to 1400 spaces, i e., approximately 15 single-spaced typewritten lines) (16) ,

On February 14, 1993, at 0433 hours0.00501 days <br />0.12 hours <br />7.159392e-4 weeks <br />1.647565e-4 months <br />, Unit 2 was in Mode 4 at 0% power. I The on-duty Shift Supervisor designated the Unit Supervisor as the individual responsible for the control room command function and exited t h e c o n t r o l- r o o m . The Unit Supervisor exited the control room to ,

observe a surveillance, leaving the control room unmanned by a Senior '

Operator for a period of 41 seconds. This action violated Technical Specification requirement 6.2.2.b, which requires at least one Senior Operator present in the control room while the unit is in Mode 1, 2, 3, or 4. The cause of this event was inappropriate action by the Unit Supervisor. Corrective actions for this event include a Human Performance Review, verbal discussions on the command and control function requirements by Management, and procedures will be revised to i add a required discussion concerning command and control function for l License Activation Certification. This event will also be included in j Licensed Operator Requalification Training.

LER\93130001.U2 NRC 5 Onu ses <s s.3 9305210207 930514 PDR ADOCK 05000499 S PDR

REQUIRED NUMBER OF DIGITS / CHARACTERS -

FOR EACH BLOCK - .

BLOCK NUMBER OF NUMBER DIGITS / CHARACTERS i

1- UP TO 46 FACluTY NAME BTOTAL DOCKET NUMBER 3 IN ADDITION TO 05000 3 VARIES PAGE NUMBER 4 UP TO 76 TITLE 6 TOTAL NT DATE 2 PER BLOCK 7 TOTAL 6 LER NUMBER 3 FOR SEQUENTIAL NUMBER 2 FOR REVISION NUMBER 0

7 REPORT DATE 2 PER BL CK UP TO 18 - FACILITY NAME  ;

8 8 TOTAL- DOCKET NUMBER

^'

i 3 IN ADDITION TO 05000 9 1 OPERATING MODE I

to 3 POWER LEVEL 11 CHECK BOXTHAT APPUES REQUIREbEMS OF 10 Cm UP TO SO FOR NAME 2 UCENSEE CONTACT ,

14 FOR TELEPHONE CAUSE VAR ES l 2 FOR SYSTEM i 13 4 FOR COMPONENT EACH COMPONENT FAILURE 4 FOR MANUFACTURER NPROS VARIES .

CHECK BOX THAT APPUES ENM REPOM MEMED 15 EXPECTED SUBMISSION DATE 2 PER BL CK i

1 l

I l

1 l

1 1

i

4 TRC FORM 366A U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150-0104 pm;

• EXPIRES 5/31/95 ESTNA'ED BJRDEN PER RESPONSE TO COMatV W'M TG MOFMATON COLLECTON REQUEST: 50.0 HRS. FORWACC r r

LICENSEE EVENT REPORT (LER) CouMENvs REGARaiuG suRaEN ESTiuATE To THE uoRuAtos TEXT CONTINUATION AND RECORDS Roowony couu VANAGEuENT BRANCH ssoN waS% Toy, lMMBB ,771A),

oc m33y,c N3 eU.S.,NJ,OL[.,A THE PAPERWORK REDUCTON PR3)ECT 13160 010,d). OFFCE 05 MANAGEMENT AND BJDGET. WASHINGTON. DC 20503 FACILITY NAME p) DOC,,ET NUMBER (2) LER NUMBER (6) PAGE (3) blOJENTAL REVISON NUMBER NUMBER South Texas, Unit 2 05000 499 02 op 03 93 - 005- 01 1m m w.:. . w.a. m. .nm en , e unc ow- m ve n DESCRIPTION OF EVENT: ,

On February 14, 1993, at 0433 hours0.00501 days <br />0.12 hours <br />7.159392e-4 weeks <br />1.647565e-4 months <br />, Unit 2 was in Mode 4 at 0% t power. The on-duty Shift Supervisor designated the Unit Supervisor as the individual responsible for the control room command function and exited the control room. The Unit Supervisor, the only Senior Operator in the control room, exited the control room to observe a portion of a surveillance in progress in the relay racks adjacent to the control room. Upon realizing his error, the Unit Supervisor immediately returned to the control room. Security records were reviewed and it was determined that the control room had been unmanned by a Senior Operator for a period of 41 seconds. During this period of time, two reactor operators remained in the control room. The NRC was notified of this event on February 14, 1993, at 1108 hours0.0128 days <br />0.308 hours <br />0.00183 weeks <br />4.21594e-4 months <br />.

I The Technical Specifications, section 6.2.2.b, requires that a '

Senior Operator shall be in the control room with the Unit in Mode 1, 2, 3, or 4. Technical Specification Table 6.2-1, specifies that during the ab'ence s of the Shift Supervisor from the control room while the unit is in Mode 1, 2, 3, or 4, an individual (other than the Shift Technical Advisor) with a valid Senior Operator license shall be designated to assume the control room command function.

CAUSE OF EVENT:

The cause of this event was inappropriate actions by the Unit Supervisor. The Unit Supervisor was cognizant of his responsibility to maintain control room command function in the absence of the Shift Supervisor. However, his preoccupation with the surveillance in progress caused his loss of focus on his primary responsibility, resulting in a violation of Technical Specification.

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U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY oMB NO. 3150-0104 NRC FORM 366A (se2; .

• EXPJRES 5/31/95 ESTMATED BURDEN PER RESPONSE TO COMNY W'TH TH:5 LICENSEE EVENT REPORT (LER) EuuT*J UcGT S E ERDf $ $ E fo O wlE*^2 AN RE R S MANAGEMENT BRANCH fMNBB WWE. NWAR TEXT CONTINUATION REGU;.ATORY CDuM:SSON. WAEMNGTON, DC205554001, AND 1C THE PePERWDRM REDUCTON PRGJECT (3t604i04) OFFCE OF W ANAGEMENT AND BJDGEi, WASHINGTON, DC P0603 DOCKET NUMBER (2) LER NUMBE R (6) PAGE (3) 7 AClWTY NAME (t)

SEQJiNieAL REVI!4QN 03 op 03 South Texas, Unit 2 05000 499 _ OO5- 01 9 3 1w, m ma ne, ma,,e .e eaaw. ce, or we w mn o n ANALYSIS OF EVENT:

This event is reportable pursuant to 10CFR50.~73 (a) (2) (1) (B) . '

There were no adverse radiological or safety consequences as a result of this event.

CORRECT 1VE ACTIONS:

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1. A Human Performance Review Board was conducted with the Unit Supervisor and representatives from Operations, Training, Corrective Action Group, and Management. As a result, the '

Plant Manager will discuss the command and control function requirements with Licensed Senior Operators filling the i positions of Shift Supervisor and Unit Supervisor. These discussions will be completed by June 11, 1993.

2. The Licensed Operator License Maintenance procedure will be .

revised to add a required discussion between Licensed Operators and Plant Operations Manager concerning command and  ;

control functions. These discussions will be held prior to License Activation Certification. The procedure revision will be completed by August 9, 1993.

3. This event will be included in the lessons learned portion of Licensed Operator Requalification Training Program by July 16, 1993.

f ADDITIONAL INFORMATION:

There have been no similar events reported to the NRC involving a violation of Technical Specification 6.2.2.b.

i LER\93130001.02  !

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