ML20045F471

LER 93-009-00:on 930607,high Radiation Area Barrier Was Unlocked Due to Personnel Error.Comprehensive Confirmation Survey Performed,Personnel Interviewed & Task Force Formed. W/930702 Ltr

ML20045F471
Person / Time
Site:	Beaver Valley
Issue date:	07/02/1993
From:	Freeland L DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-93-009, LER-93-9, ND3MNO:3467, NUDOCS 9307070325
Download: ML20045F471 (7)

Text

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'Af Telephone (412) 393-6000 O on 4 Shrppingport. PA 18077-0004 2

July 2,1993 ND3MNO:3467 Beaver Valley Power Station, Unit No.1 Docket No. 50-334, Licensee No. DPR-66 LER 93-009-00 United States Nuclear Regulatory Commission Document Control Desk-Washington, DC 20555 Gentlemen:

In accordance with Appendix A, Beaver Valley Technical Specifications, the following Licensee Event Report is submitted:

LER 93-009-00,10 CFR 50.73.a.2.i.B, " Unlocked High Radiation Area Barrier."

h4 T. R. Freeland General Manager Nuclear Operations JGT/sl Attachment.

9307070325 930702 Qq- /

, PDR. ADOCK 05000334 yy r/ l-S PDR "a _-l y

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h July 2,1993 ND3MNO:3467 Page 2 1

cc: Mr. T. T. Martin, Regional Administrator j United States Nuclear Regulatory Commission Region 1 475 Allendale Road King of Prussia, PA 19406 Mr. G. E. Edison, BVPS Licensing Project Manager United States Nuclear Regulatory Commission Washington, DC 20555 Larry Rossbach, Nuclear Regulatory Commission, BVPS Senior Resident inspector ,

J. A. Holtz, Ohio Edison

6 S. Main Street Akron, OH 44308 Larry Beck  :

Centerior Energy 6200 Oak Tree Blvd. ,

independence, OH 44101-4661 k

INPO Records Center 700 Galleria Parkway  :

Atlanta, GA 30339-5957 Mr. Robert Barkanic j Department of Environmental Resources  !

P.O. Box 2063 I I

16th Floor, Fulton Building Harrisburg. PA 17120  ;

Director, Safety Evaluation & Control .;

Virginia Electric & Power Co. 'l P.O. Box 26666 >

One James River Plaza ,

Richmond, VA 23261  ;

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W. Hartley Virginia Power Company _l <

5000 Dominion Blvd.

2SW Glenn Allen, VA 23060 l t

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July 2,1993 .

ND3MNO:3467  !

Page 3

'I J. M. Riddle Halliburton NUS i Foster Plaza 7 l 661 Anderson Drive f Pittsburgh, PA 15220 l i

Bill Wegner, Consultant }

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. .- l NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB MO. 3150-0104

5 rm EXPIRES S/31/95 EST! MATED BURDEN PER RESPONSE TO COMPLY W'T M TH;5 tNFORMATION COLLE CTION REQUEST: 50.0 HRS FORAARD LICENSEE EVENT REPORT (LER) CevetNTs ntaRDmo suRDtN isTuATt TO T E NrOnuATiON AND RE. CORD 5 MANAGEVENT BRANCH fuNFsB 7714l U $. NUCLE AR Af GutATOFW COf.MSSON. W ASMNGTON, DC M58 5 0D?t. AND TO THE FAF'ERWORK RE DUC'lON PROJtCT 0750 01D4. OFFICE Or MANAGEMENT AND BUDGET, WASHNTON, DO M503 (See reverse for requued number of digrts/ characters for each block) pAcOTYNAME W DOCKET NUMBE R (2) PAGE p)

Beaver Valley Power Station Unit 1 05000 334 OF 04 ,

TITLE 14)

Unlocked High Radiation Area Barrier.

EVENT DATE (5) LER NUMBER (6 i REPORT NUMBER (7) OTHER FACILITIES INVOLVED (8)

SEOJENTiAL FEVtSION

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N/A 05000 N/A F ACluiY NAMt DOCF.ET NUMBER 06 0 T 93 93 -

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OPERATING THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR 4: (Check one or more) (11)

MODE (9) 5 20 402(b) 20 405(c) 50 73(a)(2)(iv) 73 7i(d)

POWER 20 405(aH1)o) 50.36(c)(1) 50.73(aM2)(v) 73 71(c)

LEVEL (10) 0 20 405(a)(1 H") 50.36(c)(2) 50.73(a)(2)(vii) OTHER 20 405(a)(1)(iri; );50.73(a)(2)(i) 50.73(aH2)(vm)(A) 20 405(a)(1)(w) 50.73(a)(2}(ii) 50.73(a)(2)(vur)(B) c o ,.,s 3%m 20 405(a)(1)(v) 50 73(aH2)(iii) 50.73(aH2)(x)

LICENSEE CONTACT FOR THIS LER (12) I put Tu LP"oNE N;veta meuoe Area cocei L R. Freeland, General Manager Nuclear Operations 41 2 643-1258:

COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (13) past sys*r M COMO.E NT MANJf ACTURf A CAU E SYST M COMPONENT MANUF ACTURE R O S A NE XXXX XXXX N SUPPLEMENTAL REPORT EXPECTED (14) EXPECTED "N" D^* R ^"

I yu SUBMISSION p m. mnm nPrc'tD mevss ON dam }l" DATE (15)

ABSTRACT (Limrt to 1400 spaces. i e.. approximately 15 single 4 paced typewritten lines) (16)

On 6/7/93, with Unit One in Mode 5 for the ninth refueling outage, Health Physics was performing a routine radiation barrier check, which verifies the integrity of the barrier and that the barrier is in place and posted. At 1740 hrs, the east ladder barrier to the Solid Waste area was found open. This area is a High Radiation Area and is required to be barricaded and conspicuously posted in accordance with Technical Specification 6.12. The area was searched i and no individuals were present. This barrier was previously verified locked closed during the daylight shift at 0936 hrs. A survey of the area indicated that there were no areas where the radiation levels were greater than 1000 millirem per hour, however an area that had radiation levels greater than 100 millirem per hour was present. With the barrier open, the area was still conspicuously ,

posted as a High Radiation Area, however, it was not adequately barricaded. The barrier was not closed when personnel exited the area. All personnel that had High Radiation Area keys during this ,

time period were interviewed. The results were inconclusive and it could not be ascertained who left the barrier open. No adverse radiological consequences resulted due to the barrier being inadvertently left open. A review of exposure records indicated that no station personnel received any abnormal dose during the time the barrier was open, we rOno m m

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TEXT CONTINUATION Ac Rtc 4 s uANAGEvEc s%N:s mes nuw s Nu:sR RE3ULATORY COWSSON. WAS"iN3?ON, DC 20555M1. AND TO THE PAPERWDRd REDUCTON PROJEC' (3153.cto45 DU CE OF MANAGEMEN'T AND BJDGET, WAS"tN3?ON. DC 20503, FACIUTV NAME (1) DOCRET NUMBER (2) LER NUMBER (5) PAGE(3) gg bEQJE C.A. REwSON NJMBER NUUBER 05000 oF Beaver Valley Power Station Unit 1 334 93 - 009- 00 02 04 TLxT (n more spece a rewec sne scamone cc+es of WC Form 3ts4; (17) i Description of Event On 6/7/93 at 1740 hrs, a Radiation Technician was performing a routine radiation barrier surveillance. The surveillance verifies the integrity of the barrier and that the barrier is in place and conspicuously posted. The Radiation Technician found the east wall -

ladder barrier to the Solid Waste area open. A portion of the Solid Waste area accessible from this ladder is a High Radiation Area (greater than 100 millirem per hour but less than 1000 millirem per hour) and is required to be barricaded and conspicuously posted as a High Radiation Area in accordance with Technical Specification 6.12. This barrier was previously verified locked closed during the previous barrier check at 0936 hrs.

A confirmation survey of the area indicated that there were no accessible areas where the radiation levels were greater than 1000 millirem per hour however an area at the bottom of another Solid Waste ladder prov1 ding access to the 722' elevation had radiation levels where an individual could have received greater than 100 millirem per hour to a major portion of their whole body.  !

l With the barrier open, the area was still conspicuously posted as a High Radiation Area, however the area was not barricaded adequately i as required by Technical Specification 6.12. l t

,Cause of the Event The barricade was not verified closed when an individual or work crew exited the area. All personnel that had High Radiation Area  ;

keys signed out during the time period between barrier checks were interviewed. The results were inconclusive and it could not be ascertained who left the barrier open.

Corrective Actions  ;

1). At the time of discovery, the area was searched and no individuals were present in the area.

2). A comprehensive confirmation survey of the area was performed.

It was verified that the radiation levels in the portion of the  :

Solid Waste area accessible from this barrier being left open were less than 1000 millirem per hour. However, an area was accessible where an individual could have received greater than '

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100 millirem per hour to a major portion of the whole body.

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TEXT CONTINUATION REGULATOAV CCA*V$ SON WAS*0NGTON. DC 20S$5 D"C1. AND TO TME FAPERWORA REDuCTCN PRCUECT ptSX104;, OFFICE Cr VANAGEMEC AND BJDGE7. W A5'+N370%. DC 20533 f ACILITV NAME (1) DOCME1 NUMBER (2) l Lf R NUMBER (6) FAGE (3) gg LEQUENhAL kloh 0N NUMBER NUMBEM 05000 oF Beaver Valley Power Station Unit 1 334 93 - 009- 00 03 04 tea w , ,ar. ua. ,, ,.u a . .nw n w um ,,, m o n 3). All personnel that had High Radiation Area keys signed out during the time period between barrier checks were interviewed.

The results were inconclusive and it could not be ascertained who left the barrier open.

4). A review of exposure records indicated that no station personnel received any abnormal dose during the time period that the barricade was open.

5). A multi-disciplined, human performance oriented task force has been formed to assess the root causes of events involving high radiation barrier controls. The task force is led by the Manager, Health Physics Department and includes members from Operations, Health Physics, Maintenance, and Training. The task force will determine additional corrective actions needed to physical barriers, postings, station procedures, or training to maintain station standards for controlling access to high radiation areas.

Previous Similar Events A review of station documents revealed three previous similar events:

1). Unit 1 LER 93-006 documented an event where two operators entered a locked high radiation area to perform valving, and left the barrier door open. Due to the physical layout of the work area, they were unable to maintain adequate control over the access point.

2). Unit 1 LER 92-006 documented an event in which the East Valve Trench Area barrier door was discovered to be open during a routine radiation barrier check. This event was caused by a failure to properly verify that the door was locked upon exit from the area.

3). Unit 1 LER 89-014 documented an event in which the East Valve Trench Area barrier door was found open due to a faulty locking mechanism. 1 Reportability i This event resulted in a condition prohibited by Technical Specification 6.12. As a result, this Licensee Event Report is being submitted in accordance with 10 CFR 50.73.a.2.1.B.

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NRC FORM 366A U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150-0104 5R EXP!RES 5/31/95 ESTW/A4D BJOEN PER RESPONSE TO Cou%v w'TH Tks INCORVATON COU EC'CN REQJEST. SO D HRS. FORAAC '

LICENSEE EVENT REPORT (LER) eOy,ecs REGiRotsa aseEN tSwATE TO T E yO=uATm ,

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THE PAPCR*0R< REDUCCN PRO. JECT F53 010dj. OFFCE OF r MAW 4WE NT ANO BUDGE 7, WAS%3 TON. DC 79503 7 ACtLITY NAME 0) l DOCmET NUMBER (2) LIR NUMBER 45) PAGE (si YEAR

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NUMBER ' NUMBER 05000 or Beaver Va!!ey Power Station Unit 1 334 93 009- 00 04 04 i

rw gu n. av.v. ,,,.e,1 a. .~m ev., a uuC un us on Safety Implications This event is recognized as a violation of Technical Specifications and station radiological practices. No adverse radiological-  !

consequences resulted due to the barrier being inadvertently left open. A review of exposure records indicated that no station personnel received any abnormal dose during the time period that the l barricade was open.

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