ML17303A522

LER 87-017-00:on 870630,auxiliary Operator Entered High Radiation Area W/O Radiation Monitoring Devices Required by Tech Specs.Caused by Personnel Error.Exposure within 10CFR20 Limits.Disciplinary Action taken.W/870729 Ltr

ML17303A522
Person / Time
Site:	Palo Verde
Issue date:	07/29/1987
From:	BRADISH T R, HAYNES J G ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
192-00247-JGH-T, 192-247-JGH-T, LER-87-017-01, LER-87-17-1, NUDOCS 8708050302
Download: ML17303A522 (10)

Text

REGULA RY INFORMATION DISTRIBUTIO SYSTEM (RIDS)ACCESSION NBR: 8708050302 DOC.DATE: 87/07/29 NOTARIZED:

NO DOCKET 8 FACIL: STN-50-528 Palo Verde Nuclear Station>Unit 1>Arizona Pub li 05000528: AUTH.NAME AUTHOR AFFILIATION BRADISH>T.R.Arizona Nuclear Poeer Prospect (formerly Arizona Public Serv HAYNES>J.G.Arizona Nuclear Power Prospect (formerly Arizona Public Serv REC IP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER 87-017-00; on 870630>aux 11iarg operator entered high radiation area e/o radiation monitoring devices required bg Tech Specs.Caused bg personnel error.Exposure eithin 10CFR20 limits.Disciplinary action taken.W/870729 ltr.DISTRIBUTION CODE: IE22D COPIES RECEIVED: LTR~ENCL i SIZE: TITLE: 50.73 Licensee Event Repor t (LER)>Incident Rpt>etc.NOTES: Standardi zed plant.M.Davis>NRR: 1Cg.05000528 REC l p I ENT ID CODE/NAME PD5 LA LICITRA>E INTERNAL: ACRS MICHELSON AEOD/DOA AEOD/DSP/ROAB DEDRO NRR/DEST/ADS NRR/DEST/ELB NRR/DEST/MEB NRR/DEST/PSB NRR/DEST/SGB NRR/DLPG/GAB NRR/DREP/RAB.PMA~LRB 02 RES TELFORD>J RGN5 FILE 01 COPIES LTTR ENCL 1 1 1 1 1 1 1 1 2 2 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME PD5 PD DAVIS>M ACRS MOELLER AEOD/DSP/NAS AEOD/DSP/TPAB NRR/DEST/ADE NRR/DEST/CEB NRR/DEST/ICSB NRR/DEST/MTB NRR/DEST/RSB NRR/DLPG/HFB NRR/DOEA/EAB NRR/DREP/RPB NRR/PMAS/PTSB RES DEPY GI RES/DE/EIB COPIES LTTR ENCL 1 1 1 1 2 2 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 EXTERNAL: EGS<G GROH>M LPDR NSIC HARRIS>J NOTES: 5 5 1 1 1 1 H ST LOBBY WARD NRC-PDR'NS I C MAYS>G 1 1 1 1 1 1 TOTAL NUMBER OF COPIES REQUIRED: LTTR 47 ENCL 45 1~I<

NRC Ferns 355 (5.53)LICENSEE EVENT REPORT{LER)U$.NUCLEAR REOULATORY COlWISSION APPROVED DMS HO, 31504104 EXPHIES: 5/3(/SS FACILITY NAME (1)DOCKET NUMSER 12)0 5 0 0 0 PA 3 1 oF 3 adiation Monitorin Device Auxiliary Operator Enters High Radiation Area without Proper R MONTH DAY YEAR EVENT DATE ISI YEAR g LEA NUMBER ISI REPORT DATE ITI SEQVENT/AI.

NUMSC Sl.4?RC~~MONTH OAY YEAR N A OTHER FACILITIES INVOLVED (5)DOCKET NUMBER(SI 0 5 0 0 0~AC/LITT NAMES 0 6 0 8 7 0 1 7 0 0 0 7 2 9 8 7 N A 0 5 0 0 0 OPEAATINO MODE (5)4 POWER LEYEL 0 0 (10)20.402(hl 20 4$(cl(1)(il 20.405(eHI)(Si) 20.405(el(1)(rii)20.405(e l(1)(wl 20.405(el()i(r) 20A05(cl 50.$5(cl(l I 50.35(e)(2)M.7$(el(2)(i)50.7 34)(2)(5 I 50.7$(e)W (Iii)LICENSEE CONTACT FOR THIS LER ('12)50.7$4)(2)(ic).50.734)(2)(el 50.734)(2)(eS I M.734)0)Ie(X)(A)50.734)(2)(HS)ISI 50.7$4)(2)(c I THIS REPORT IS SUSMITTED PURSUANT TO THE REOUIREMENTS OF 10 CFR gs IChrck one or more ol the/olsowrnp/(Ill 7$.7)(5)7$.71(c)DTHER Is~/ry/n Aosarct~ow end ln Test, NAC F~$554l NAME Thomas R.Bradish, Compliance Supervisor TELEPHONE NUMBER AREA CODE 6 0 2 3 9 3-3 5 3 1 COMPLETE ONE LINE FOR EACH COMPONENT FAILURE OESCRISED IN THIS REPORT (1$)CAUSE SYSTEM COMPONENT MANUFAC.TURER CAUSE SYSTEM COMPONENT MANUFAC.TURER~EPOATASLE TO NPAOS 4e+4l SUPPLEMENTAL REPOAT EXPECTED (14)YES lll yes, complete EXPECTED SUSMISSIOH DATE/IO ASSTR ACT ILimlt to/400 ulcer, I e..eooroeimeteiy A/teen sinple soece tyoewritNn linsel (15)MONTH DAY EXPECTED SUSMISSION DATE (15I YEAR At approximately 1635 on'une 30, 1987, Palo Verde Unit 1 was in Node 4 (HOT SHUTDOWN)when it was discovered that an auxiliary operator (util ity non-1 icensed)had entered a high radiation area without the radiation monitoring devices that are required by Technical Specifications

.The operator received an intake of 6.6 HPC (Maximum Permissible Concentration) hour s.Hi s exposure was determined to be 101 mi 1 1 irad to the thyroid and less than 1 mi I 1 irad whole body dose, which are within the 10CFR 20 exposure 1 imits.The high radiation area was properly posted, however the operator did not real ize that he was entering a high radiation area.This was a cognitive personnel error that was contrary to approved procedures.

To prevent recurrence appropriate d i scip 1 inary action has been taken.No simi 1 ar events have been reported.8708050302 870729 PDR ADOCK 05000528 8 PDR NAC Serrn 345 j

NRC Form 344A IB 83I 0 LICENSEE EVENT REPORT (LERI TEXT CONTINUATION U.S, NUCLEAR AEOULATORY COMMISSION APPROVED OMB NO 3150 CIB4 EXPIRES;8/31/88 FACILITY NAME III DOCKEt NUMBER 111 LER NUMBER IS>YEAR P SEQUENTIAL

~rUM SA II 4 V IS IO N I/UMPSII PAOE 131 Palo Verde Unit 1 TEXT///moro soocoir/4/rworf, ow t//ro'orM/H/IC Form 3SSAB/1131 0 5 0 0 0 5 2 8 8 7 017 0 0 OF 0 3 At approximately 1635 on June 30, 1987 Palo Verde Unit 1 was in Hode 4 (HOT SHUTDOWN)when it was discovered that an auxiliary operator (utility non-licensed) had entered a high radiation area without the radiation monitoring devices (RI)that are required by Technical Specifications.

The operator was exiting the Radiological ly Controlled Area (RCA)when he was found to be slightly contaminated.

Discussions were held with the operator to determine where he had received the contamination.

The operator stated that he had entered the"BU train Low Pressure Safety Injection (LPSI)(BP) pump (P)room and noticed a high level of humidity.Radiation Protection (RP)personnel checked plant records and found that LPSI"BU room was posted as a high radiation area.Technical Specification 6.12 requires that each high radiation area in which the intensity of radiation is greater than 100 but less than 1000 mi'Ilirem/hour (mrem/hr)must be barricaded and conspicuously posted as a high radiation area and entrance thereto shall be controlled by issuance of a Radiation Exposure Permit (REP).Any individual or group permitted to enter such areas shall be provided with or accompanied by one or more of the f o 1 lowing: a.A radiation monitoring device (RI)which continuously indicates the radiation dose in the area.b.A radiation monitoring device which continuously integrates the radiation dose rate in the area and alarms when a preset integrated dose is received.Entry into such areas with this monitoring device may be made after the dose rate level in the area has been established and personnel have been made knowledgeable of them.Cr A radiation protection qualified individual (i.e., qualified in radiation protection procedures) with a radiation dose rate monitoring device who is responsible for providing positive control over the activities within the area and shall perform periodic radiation surveillance at the frequency specified by the facility Radiation Protection Supervisor or his designated alternate in the REP.Technical Specification 6.12 also requires areas with radiation levels greater than 1000 mrem/hr to be posted and locked.The operator entered the posted high radiation area without the monitoring devices required by the Technical Specifications and plant procedures.

This was in violation of Technical Specification requirements.

A radiation protection technician was sent to survey the dose rates in the LPSI pump room.The survey revealed that dose rates had increased high enough to require locking the room in accordance with Technical Specification 6.12.Air samples of the room indicated the presence of Iodines at 21.7 HPC (Haximum Permissible Concentration) and noble gases at 13.7 HPC.The"B" train of LPSI had recently been placed in service for shutdown cooling, which accounted for the increased radiation levels.4AC I OIIM 3444 6 ST/

1 j NRC Form$4CA 19 891 LICENSEE EVENT REPORT (LER)TEXT CONTINUATION U.S.NUCLEAR RECULATORY COMM/$$/ON APPROVEO OMS NO$150 0104 EXPIRES I 8/31/88~AOE IS)1 V TEXT///moro ttroco ic 4/ccwot/, c/>>//POrot/HRC Form JCSA'tl IIT1 OOCKET NUMSER (EI o s o o o5 28 87 LER NUMSER lff 017~>.'r.$EOVENT/AL r'~i ic'Pt rr v M AEVl$lON~r VM of rc 0 0 3 QF 0 3 A previous survey of the area had been conducted at 1230 and the dose rates at that time were less than 1000 mrem/hour so locking was not required.However, the area was considered a high radiation area and was properly posted.When it was discovered that the operator had been contaminated a who'1e body count was performed.

The operator then showered and was counted again.His body count dropped due to removal of skin contamination.

An evaluation of the operator's WBCs and Thermoluminescent Dosimeter (TLD)readings was conducted.

The evaluation concluded that the operator had received an intake of 6.6 MPC hours.The operator's exposure was determined to be 101 millirad to the thyroid and less than 1 millirad whole body dose, which are within 10CFR 20 exposure limits.The root cause of this event was a cognitive personnel error that was contrary to approved plant procedures.

To prevent recurrence appropriate disciplinary action was taken.Additional corrective actions are currently being evaluated.

Should additional actions be taken a supplement to this report will be issued.Since the operator's dose was within limits, and no other plant personnel or the public were affected by this event this event had no impact on the safe operation of the plant.There were no structures, systems, or components inoperable at the start of the event that contributed to the event.There were no component failures or engineered safety features actuations that occurred.No similar events have been reported.N/IC t0/lrc$444 l9 8$r I I Arizona Nuclear Power Project P.O.SOX 52034~PHOENIX.ARIZONA 85072-2034 192-00247-JGH/TRB/JHT July 29, 1987 Document Control Desk U.S.Nuclear Regulatory Commission Washington, D.C.20555

Subject:

Palo Verde Nuclear Generating Station (PVNGS)Unit 1 Docket No.50-528 Licensee Event Report 87-017-00 File: 87-020-404

Dear Sirs:

Attached please find Licensee Event Report (LER)No.87-017-00 prepared and submitted pursuant to 10CFR 50.73.In accordance with 10CFR 50.73(d), we are herewith forwarding a copy of the LER to the Regional Administrator of the Region V Office.If you have any questions, please contact T.R.Bradish, Compliance Supervisor at (602)393-3531.Very tru y yours, J.G.Haynes Vice President Nuclear Production JGH/JHT/cld Attachment (all w/a)cc: O.M.DeMichele E.E.Van Brunt, Jr.J.B.Martin R.P.Zimmerman R.C.Sorenson E.A.Licitra A.C.Gehr INFO Records Center 1" I t'