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, Haynes J 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.

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NOTES: Standardi zed plant. M. Davis> NRR: 1Cg. 05000528 l

REC p I ENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 LICITRA> E 1 1 DAVIS> M 1 1 INTERNAL: ACRS MICHELSON 1 1 ACRS MOELLER 2 2 AEOD/DOA 1 1 AEOD/DSP/NAS 1 1 AEOD/DSP/ROAB 2 2 AEOD/DSP/TPAB 1 1 DEDRO 1 1 NRR/DEST/ADE 1 0 NRR/DEST/ADS 1 0 NRR/DEST/CEB 1 1 NRR/DEST/ELB 1 1 NRR/DEST/ICSB 1 1 NRR/DEST/MEB 1 1 NRR/DEST/MTB 1 NRR/DEST/PSB 1 1 NRR/DEST/RSB 1 1 NRR/DEST/SGB 1 1 NRR/DLPG/HFB 1 1 NRR/DLPG/GAB 1 1 NRR/DOEA/EAB 1 1 NRR/DREP/RAB 1 1 NRR/DREP/RPB 2 2

.PMA~LRB 1 1 NRR/PMAS/PTSB 1 1 02 1 1 RES DEPY GI 1 1 RES TELFORD> J 1 1 RES/DE/EIB 1 1 RGN5 FILE 01 1 EXTERNAL: EGS<G GROH> M 5 5 H ST LOBBY WARD 1 1 LPDR 1 1 NRC- PDR 1 1 NSIC HARRIS> J 1 1 I

'NS C MAYS> G 1 1 NOTES:

TOTAL NUMBER OF COPIES REQUIRED: LTTR 47 ENCL 45

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NRC Ferns 355 U$ . NUCLEAR REOULATORY COlWISSION (5.53)

APPROVED DMS HO, 31504104 LICENSEE EVENT REPORT {LER) EXPHIES: 5/3(/SS FACILITY NAME (1) DOCKET NUMSER 12) PA 3 0 5 0 0 0 1 oF 3 Auxiliary Operator Enters High Radiation Area without Proper R adiation Monitorin Device EVENT DATE ISI LEA NUMBER ISI REPORT DATE ITI OTHER FACILITIES INVOLVED (5)

MONTH DAY YEAR YEAR g SEQVENT/AI. .4?

NUMSC Sl RC~~ MONTH OAY YEAR ~ AC/LITT NAMES DOCKET NUMBER(SI N A 0 5 0 0 0 0 6 0 8 7 0 1 7 0 0 0 7 2 9 8 7 N A 0 5 0 0 0 OPEAATINO THIS REPORT IS SUSMITTED PURSUANT TO THE REOUIREMENTS OF 10 CFR gs IChrck one or more ol the /olsowrnp/ (Ill MODE (5) 4 20.402(hl 20A05(cl 50.7$ 4) (2) (ic) . 7$ .7)(5)

POWER 20 4$ (cl(1)(il 50.$ 5(cl(l I 50.734) (2) (el 7$ .71(c)

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20.405(el(1) (rii) M.7$ (el(2)(i) M.734) 0) Ie(X) (A) $ 554l 20.405(e l(1) (wl 50.7 34)(2) (5 I 50.734) (2)(HS)ISI 20.405(el()i(r) 50.7$ (e) W (Iii) 50.7$ 4)(2)(c I LICENSEE CONTACT FOR THIS LER ('12)

NAME TELEPHONE NUMBER AREA CODE Thomas R. Bradish, Compliance Supervisor 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. MANUFAC. EPOATASLE TURER CAUSE SYSTEM COMPONENT TURER ~ TO NPAOS 4e +4l SUPPLEMENTAL REPOAT EXPECTED (14) MONTH DAY YEAR EXPECTED SUSMISSION DATE (15I YES lllyes, complete EXPECTED SUSMISSIOH DATE/ IO ASSTR ACT ILimlt to /400 ulcer, I e.. eooroeimeteiy A/teen sinple soece tyoewritNn linsel (15)

At approximately 1635 on'une 30, 1987, Palo Verde Unit was in Node 4 (HOT SHUTDOWN) when it was discovered that an auxiliary operator (util ity 1

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 inary action 1 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 U.S, NUCLEAR AEOULATORY COMMISSION LICENSEE EVENT REPORT (LERI TEXT CONTINUATION APPROVED OMB NO 3150 CIB4 EXPIRES; 8/31/88 FACILITY NAME III DOCKEt NUMBER 111 LER NUMBER IS> PAOE 131 YEAR P SEQUENTIAL II4 V IS IO N

~ rUM SA I/UMPSII Palo Verde Unit TEXT ///moro soocoir t 1

/4/rworf, ow //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 fo 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/

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NRC Form $ 4CA U.S. NUCLEAR RECULATORY COMM/$$ /ON 19 891 LICENSEE EVENT REPORT (LER) TEXT CONTINUATION APPROVEO OMS NO $ 150 0104 EXPIRES I 8/31/88 OOCKET NUMSER (EI LER NUMSER lff ~ AOE IS)

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>.'r. $ EOVENT/AL r'~i AEVl$lON ic'Pt rr v M ~r VM of rc 1 V o s o o o5 28 87 017 0 0 3 QF 0 3 TEXT /// moro ttroco ic 4/ccwot/, c/>> //POrot/ HRC Form JCSA'tl IIT1 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

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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 cc: O. M. DeMichele (all w/a)

E. E. Van Brunt, Jr.

J. B. Martin R. P. Zimmerman R. C. Sorenson E. A. Licitra A. C. Gehr INFO Records Center

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