ML18033A263

LER 88-016-00:on 880320,offgas Sys Stack Flow Monitor Inoperable & Flow Rate Monitored Every 6 H Instead of 4 H in Violation of Tech Specs.Caused by Personnel Error.Flow Recording Initiated Every 4 h.W/880701 Ltr

ML18033A263
Person / Time
Site:	Browns Ferry
Issue date:	06/28/1988
From:	Randy Baker, Jacqwan Walker TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
LER-88-016-02, LER-88-16-2, NUDOCS 8807080207
Download: ML18033A263 (10)

Text

A,C CEEERATZD DJSXRIBUTJON DEMONSTRATJQN SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8807080207 DOC.DATE: 88/06/28 NOTARIZED: NO DOCKET FACIL:50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH. NAME AUTHOR AFFILIATION BAKER, R. L. Tennessee Valley Authority WALKER,J.G Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER 88-016-00:on 880320,personnel error resulted in violation of Tech Specs.

W/8 DISTRIBUTION CODE: IE22D COPIES RECEIVED:LTR 4 ENCL /

TITLE: 50.73 Licensee Event Report (LER), Incident Rpt, etc.

SIZE-NOTES:S.Black 3 cy.1 cy. ea to: Ebneter,Axelrad,S.Richardson, 05000296 S B.D.Liaw,K.Barr, OI.

RECIPIENT COPIES RECIPIENT COPIES A ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL SIMMS,M 1 1 PD 1 1 MORAN,D 1 1 GEARS,G 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 ARM/DCTS/DAB 1 1 DEDRO 1 1 NRR/DEST/ADS 7E 1 0 NRR/DEST/CEB 8H 1 1 NRR/DEST/ESB 8D 1 1 NRR/DEST/ICSB 7 1 1 NRR/DEST/MEB 9H 1 1 NRR/DEST/MTB 9H 1 1 NRR/DEST/PSB 8D 1 1 NRR/DEST/RSB 8E 1 1 NRR/DEST/SGB 8D 1 1 NRR/DLPQ/HFB 10 1 1 NRR/DLPQ/QAB 10 1 1 NRR/DOEA/EAB 11 1 1 NRR/DREP/RAB 10 1 1 NRR/DREP/RPB 10 2 2 N S SIB 9A 1 1 NUDOCS-ABSTRACT 1 1 R G'FI 02 1 1 RES TELFORD,J 1 1

/EIB 1 1 RES/DRPS DEPY 1 . 1 RGN2 FILE" 01 1 1 EXTERNAL EG&G WILLIAMS,S 4 4 FORD BLDG HOY,A 1 1 H ST LOBBY WARD 1 1 LPDR 1 1 NRC PDR 1 1 NSIC HARRIS,J 1 1 NSIC MAYS,G 1 1 NOTES 9 9 S j

TOTAL NUMBER OF COPIES REQUIRED: LTTR 55 ENCL 54

41 NRC Form 364 0 V.S. NUCLEAR REOULATORY COMMISSION (94)3) APPROVED OMB NO. 3150M104 EXPIRES, Bf3(/65 LICENSEE EVENT. REPORT (LER)

DOCKET NUMBER (2) PA FACILITY NAME (1I 0' 0' '

oF 0 3

, Browns Ferr Unit 1 0 9 TITLE (~I Personnel Error Resulted in a Violation of Technical Specifications EVENT DATE Id) LER NUMBER (6I REPORT DATE (7) OTHER FACILITIES INVOLVED (SI SEOVENTIAL r)H REVISION FACILITYNAMES DOCKET NUMBERIS)

DAY YEAR 'EAR KK74 DAY YEAR MONTH M)I NUMEESI .C@ HUMSER Browns Ferr Unit 2 o 5 o o o2 60 2 0 8 8 8 8 0 1 6 0 006 28 Browns Ferr Unit 3 o s o o o2 96 THIS REPOAT IS SUSMITTED PURSUANT 7 0 THE REDUIREMENTs oF 10 cFR (I: ICnece one or more ol tne forlowinpf (11 OPERATINO MODE (4) 20.405(c) 60.73<4) (2)(iv) 73.71 Ie) 20.402 < 4) 20.405( ~ ) (I I I I) 50.34(cll1) 50.73(el(2)(v) 73.71(el POWER ,

LEVEL 20.406( ~ l<1)(iil 50.36(cl(2) 50.73<4)(2l(vill DTHER lspecily in Aosrrect (10) oeioiv end in Test iYftc Form 60.73(e l(2l(viiil(A) 3PSAI 20,406( ~ I (I I (iii) )( . 50.73<4)<2)<i) 20.405( ~ ill)Bvl 60.73I ~ l(2)(iil 50.73(el<El(viii) (9 I 20.406 (~ I (( I (v) 60.73( ~ )<2)(iiil 50,73< ~ )(2)(el LICENSEE CONTACT FOR THIS LER (12I TELEPHONE NUMBER NAME AREA CODE R chard L. Baker En ineer, Plant Operations Review Staff

'2 05 7 29- 25 38 COMPLETE ONE LINE FOA EACH COMPONENT FAILUAE DESCRIBED IN THIS REPORT <13)

MANVFAC. EPORTABLEÃFSNPIeyKE(y SPoc MANVFAC REPORTABLE CAUSE SYSTEM COMPONENT CAUSE SYSTEM COMPONENT TVRER TO NPRDS TVRER BLIsKWN '~%%PiÃI!

SUPPLEMENTAL REPORT EXPECTED (14) MONTH OAY YEAR EXPECTED SUBMISSION DATE I15)

YEs (if yescompiete ExppcTED sU84rlssloiY DATE) NO AbSTRACT (Limit tO f400 Soeterr id, ePPrOVimerely lifreen SinPie SPeCe tyoerrri Iten linnl (16).

On March 20, 1988, at 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, with all three Browns Ferry units defueled a personnel error resulted in the requirements of Technical Specification (TS) Tabl'e 3.2rK note "Action D" not:being met. On June 1, 1988, at 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br />, during the cognizant engineer review of

.Surveillance Instruction (SI). 4.8.B.l.a.l "Airborne Effluent Release Rate" data package, two off-gas stack flow estimates were found to be outside of the 4-hour TS requirement. On March 20, 1988, the stack flow monitor was inoperable. With this instrument inoperable the .stack flow rate estimates are normally recorded every 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />'s as required by the plant's TSs. On March 20-21, 1988, stack flow rates were recorded at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />, 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, and 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />. This gave an interval of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> for two readings. This was attributed to personnel error. by .the assistant unit operators (AUOs) responsible for recording these readings. The AUOs became involved in other duties .and neglected to take readings within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> as required by the plant's- TSs. The Operations Supervisor has counseled the individuals involved.

SSp7p 802P7 gc pgr7+

pa+ ~DECI( p5ppp29g ~gg.2-PDC )

NRC Form 3dd

<9 53 I

Ci NRC Form 388A (943( V.S. NIICLEAR RECVLATORY COMMISSION a LICENSEE EVENT REPORT ILER) TEXT CONTINUATION APPROVED OM8 NO. 3150-0(04 EXPIRES.'/3(/85 FACILITYNAME DOCKET NVMSER (1(

LER NUMSER (dl PAGE (3I (I('rowns YEAR "~ SEQVEN?IAL NVM TR REV IS ION NVMOER Ferr Unit 1 o 6'o o o 259 88 016 00 02OFO TEXT fffmcpo Aooco Io IOOPPed, ooo d(SlOOnof f(RC RNm 3(E(AEI

((T(

DESCRIPTION OF EVENT This event occurred on March 20, 1988, at 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />. The three Browns Ferry units were in cold shutdown with all fuel removed.

On June 1, 1988, at 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br />, during the cognizant engineer review of Surveillance Instruction (SI) 4.8.B.l.a.l "Airborne Effluent Release Rate" data package, two off-gas stack flow rate estimates were found to be outside of the 4-hour technical specification (TS) requirement. On March 20, 1988, the off-gas system (EIIS code WF) stack flow monitor (0-FT/FM/FI-90-271) was inoperable. The plant's TS table 3.2 instrument inoperable, "effluent releases via this pathway may continue

', note "Action D" states, with this provided the flow rate is estimated at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />." Therefore the 6-hour estimated flow rate is a violation of the plant's TSs. The estimated flow rates. are normally recorded at 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> intervals in O-SI-4.8.B.l.a.l. On March 20-21, 1988, flow rates were recorded at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />, 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, and 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />. This gave an interval of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> for two of the readings, contrary to TS table 3.2.K requirements.

CAUSE OF EVENT The Assistant Unit Operators (AUOs) responsible for recording the off-gas stack flow rates became involved in other duties and neglected taking action within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> as required by the plant's TSs. The 1800-hour reading was not taken because the AUOs were working on the off-gas stack gas monitor. The 2400-hour reading was not taken because the AUOs were working with the Chemistry Section.

CORRECTIVE ACTION The immediate corrective action was to resume the recording of the off-gas stack flow estimates every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

1 The Operations Supervisor has counseled the individuals involved in the late off-gas stack flow rate estimates.

ANALYSIS OF EVENT On March 20-21, 1988, the off-gas stack flow rates were recorded at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />, 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, and 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />. This gave an interval of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> for two of the readings. There is nothing to indicate that any radiation release limits were exceeded during this event. Radioactivity levels did not increase during this event. Off-gas stack flow estimate NRC FORM Sddo (983(

I

~ I

4 NRC Poem 844A U.S. NUCLEAR RECULATORY COMMISSION IS@41 LICENSEE EVENT REPORT (LER) TEXT CONTINUATION APPROVED OM8 NO. 8150M/04 EXPIRES; 8/51/85 FACILITY NAME 11) OOCKET NUMSER IEI LER NUMEER 141 ~ ACE IS) y 4 AR ZYA 4 4 0 u 4 N / A L A4 y 5 I0 N NUM EA . P Nuueta Browns Ferry Unit 1 o.s 0 0 o 2 5 9 8 8 0 1 6 0 0 '0'3 OF 0, 3 TEXT //PmcyP PPP/e // m4uied. Pit /RRNimP/ //RC FPfm JIISA'u/

readings remained unchanged during, this event. The standby gas treatment I171 system which would have increased the flow and releases through the off-gas stack did not actuate during this event. There,was no adverse affect on public health and safety. The event had no adverse affect on the safe operation of the plant.

PREVIOUS SIMILAR EVENTS None COMMITMENTS None N/IC FOIIM 044A I9851

<i t, 0

TENNESSEE VALLEY AUTHORITY

.Browns Ferry Nuclear Plant Post Office Box 2000 Decatur, Alabama 35602 JUL 01 1988 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555

Dear Sir:

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 DOCKET NO. 50-259 FACILITY OPERATING LICENSE DPR-33 REPORTABLE OCCURRENCE REPORT BFR0-50-.259/88016 The enclosed report provides details concerning the personnel error that resulted in a violation of technical specifications. This, report is submitted in accordance with 10 CFR 50.73 (a)(2)(i).

Very truly yours, TENNESS VALLEY A HORITY J . Walker.

1 nt Manager B owns Ferry Nuclear Plant Enclosures cc (Enclosures):

Regional Administration INFO Records Center U.S. Nuclear Regulatory Commission 'Suite 1500 Office;of Inspection and Enforcement 1100 Circle 75 Parkway Region II .Atlanta, Georgia 30339 101 Marietta Street, Suite .2900 Atlanta, Georgia 30303 NRC Resident Inspector, Browns Ferry Nuclear Plant An Equal Opportunity Employer

41