ML18005A583

LER 88-022-00:on 880809,vent Stack Flow Rate Estimates Not Done Per Tech Specs.Caused by Personnel Error.Personnel Involved Counseled & on-shift Operators Reminded of Importance of Attention to detail.W/880907 Ltr

ML18005A583
Person / Time
Site:	Harris
Issue date:	09/07/1988
From:	Schwabenbauer, Watson R CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
HO-880181-(O), LER-88-022, LER-88-22, NUDOCS 8809140387
Download: ML18005A583 (5)

Text

ACCESSION NBR:8809140387 DOC.DATE: 88/09/07 NOTARIZED: NO ~ DOCKET FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina 05000400.

AUTH. NAME AUTHOR AFFILIATION SCHWABENBAUER Carolina Power & Light Co.

WATSON,R.A. Carolina Power & Light Co.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER 88-022-00:on 880809,vent stack flow rate estimates not done per Tech Spec due to personnel error. R W/8 ltr.

DISTRIBUTiON CODE: IE22D COPIES RECEIVED:LTR I ENCL I SIZE:

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

NOTES:Application for permit renewal filed. 05000400 RECIPIENT COPIES RECIPIENT COPIES h

ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-1 LA 1 1 PD2-1 PD 1 1 BUCKLEYgB 1 1 INTERNAL: ACRS MICHELSON 1 1 ACRS MOELLER 2 2 ACRS WYLIE 1 1 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 NRR/DLPQ/QAB 10 1 1 NRR/DOEA/EAB NRR/DREP/RPB 10 ll 1 1

2 1

'1 2

NRR/DREP/RAB NRRMS IB 10 9A 1

1 1

1 NUDOCS-ABSTRACT 1 1 REG F~IB 02 1 1 RES TELFORDgJ 1 1 RES/DSIR DEPY 1 1 RES/DSIR/EIB 1 1 -RGN2 FILE 01 1 1 EXTERNAL: EG&G WILLIAMS,S 4 4 FORD BLDG HOYiA 1 1 H ST LOBBY WARD 1 1 LPDR 1 1. D NRC PDR 1 1 NSIC HARRIS,J 1 1 NSIC MAYS,G 1 1 S h

TOTAL NUMBER OF COPIES REQUIRED: LTTR 46 ENCL 45

NRC Form 366 U.S. NUCLEAR REGULATORY COMMISSION (843) APPROVED OMB NO. 31504)BI EXPIRES. 8/31/88 LICENSEE EVENT REPORT (LER)

PA E 3I FACILITY NAME ll) DOCKET NUMBER (2)

SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 0 5 0 0 0 4 0 0 1 OFO 3 VENT STACK FLOW RATE ESTIMATES WERE NOT DONE AS REQUIRED BY TECHNICAL EVENT DATE (6) LER NUMBER (6) REPORT DATE (7) OTHER FACILITIES INVOLVED (8)

MONTH DAY YEAR YEAR P'a>>>> BEOVENTIAL;cM REVS~ MONTH DAY YEAR FACILITYNAMES DOCKS'T NUMSERIS)

C>>/fr NUMBER NUMBER 0 5 0 0 0 08098888 0 2 2 0 0 0 9 0 7 8 8 THIS REPORT IS SUBMITTED PURSUANT TO THE REOUIREMENTS OF 10 CFR ()t (Check one etmorr of the foBovF'np) (11) 0 5 0 0 0 OPERATING MODE (8) 20A02(B) 20A05(c) 60.73(el(2) Ilv) 73.71(B)

POWER 20A05(el(II(0 50.36 (c) (I ) 50.73(e I (2)(vl 73.71(c)

LEVEL (10) 20A05(e) III (ilI 50.36(cl(2) 50.7 3 4l((2)(vill)(B)

2) (ril) OTHER (Sprclfy In Aht tract trrlow end In trit, HRC Form 20A05( ~ l(1)(iill 50.73(e) (2)(l) 50.73(e) (2)(rill)(AI SSSAI 20A05( ~ ) (1)(lvl 50,73( ~ )12)(ii) 50.73( ~ )

20 ASS( ~ I (1)(v) 50.73(e I 1 2) I ill) 50.73( ~ )(2)lx)

LICENSEE CONTACT FOR THIS LER (12I NAME TELEPHONE NUMBER AREA CODE R, SCHWABENBAUER REGULATORY COMPLIANCE TECHNICIAN COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (13I 919362-2669 CAUSE SYSTEM COMPONENT MANU TURER FAC. EPORTAB LE TO NPRDS SYSTEM COMPONENT MANUFAC.

TURER spossrsts I~(

p>>rr>> '"'>>'

"'.ry'AUSE NM%

SUPPLEMENTAL REPORT EXPECTED (14) MONTH DAY YEAR EXPECTED SUBMISSION DATE (15)

YES /if yrt, complrtr EXPECTED SIIBMISSIOH DATE) NO ABSTRACT (Limit to Ir00 tprcet, I e., epproilmetrly filreen slnpfrcpecr typrrvtfnen liner) 116)

ABSTRACT The plant was in Mode 5, Cold Shutdown, at 0 percent reactor power on August 9, 1988.

Technical Specifications (TS) 3.3.3.lib Table 3.3-13 Action 46 requires that flow rates from vent stacks be estimated once per four hours when the flow rate instrument is inoperable.

The Turbine Building Vent Stack Flow Rate Monitor 'was'declared inoperable at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on February 29, 1988, and flow rate estimates initiated. The Plant Vent Stack Flow Rate Monitor was declared inoperable at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on March 18, 1988, and flow rate estimates initiated.

At 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on August 9, 1988, while reviewing the previous shifts log sheets, it was discovered that the following flow rate estimates for both vent stacks were missed: 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> estimates for August 8, 1988, and the 0000 hour0 days <br />0 hours <br />0 weeks <br />0 months <br /> and 0400 hour0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> estimates for August 9, 1988. The flow rate estimates were resumed at 0800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> on August 9, 1988'he cause of the event was personnel error on the part of the Balance of Plant (BOP) operator as he failed to perform the required flow rate estimates.

Corrective actions include A) the individuals involved have reviewed this event and have been counselled, B) on-shift operations personnel have been reminded of the importance of attention to detail in general and the estimated stack flow rate requirement in particular by means of a night order issued on August 17, 1988.

There were no safety consequences as a result of this event and is being reported in accordance with 10CBR50.73(a)(2i(i)(B) as a violation of Technical Specifications.

8809>eoSS7 S80~07 PDR ADOCIE 05000400 NRC Form 366 9 PNU (Sd)3)

U.S, NUCLEAR REGULATORY COMMISSION NRC FoNA 3EEA (9831 LICENSEE EVENT REPORT (LER) TEXT CONTINUATION APPROVED OMB NO. 3(50&(04 EXPIRES: 8/31/88 FACILITYNAME (11 DOCKET NUMBER (21 LER NUMBER (5> PAGE (31 YEAR SEOVENTIAL CP1 REVISION SHEARON HARRIS NUCLEAR POWER PLANT NVMOER NVMOER UNIT 1 OF 0 S 0 0 0 4 0 0 8 8 0 2 2 0 0 0 2 0 3 TEXT /////>>Io S>>to i/ /ouuiod. uto dttd/v>>///RC Ftultl 3//SA'4/ (171 DESCRIPTION The plant was in Mode 5, Cold Shutdown, at 0 percent reactor power on August 9, 1988. Technical Specifications (TS) 3.3.3.11b Table 3.3-13 Action 46 requires that flow rates from vent stacks (EIIS:VH) be estimated once per four hours when the flow rate instrument is inoperable.

The Turbine Building (EIIS:NM) Vent Stack (EIIS:VL) flow rate monitor (EIIS:IL) was declared inoperable, at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on February 29, 1988, and flow rate estimates were initiated. The Plant Vent Stack (EIIS:VL) flow rate monitor (EIIS:IL) was declared inoperable at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on March 18, 1988, and flow rate estimates were initiated.

At 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on August 9, 1988, it was discovered that the following flow rate estimates were missed for both the vent stacks'.

August 8, 1988 2000 hour August 9, 1988 0000 h'our August 9, 1988 - 0400 hour0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> The missed flow rate estimates were discovered by the on-coming shift during their review of the previous shift logsheets. The required flow rate estimates were then resumed at 0800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> on August 9, 1988.

The vent stack flow rate is required to calculate release rates to the atmosphere from the plant stacks. When the flow rate monitor is inoperable a conservative estimate of the stack flow rate's performed every four hours by determining which fans exhausting to each st'ack are in service. The design flows of each in-service fan are then totaled to yield an estimated flow rate.

CAUSE The cause of the event was personnel error on the part of the Balance of Plant (BOP) operator as he failed to perform the required flow rate estimates.

ANALYSIS There were no safety consequences as a result of this event. Even though the stacks flow rate estimation was not done during this period, radiation monitors sampling from both the Plant Vent Stack and the Turbine Building Vent Stack were o'perable and showed no increase in release concentration.

Conservative values were used (i.etP design stack flow) for those fan flow estimates that were missed.

NRC POIIM 3444 oV.S.GPO.1 080 0.824 538/455 (083)

U.S. NUCLEAR REGULATORY COMMISSION NRC Form 344A (941 3l LICENSEE EVENT REPORT ILERI TEXT CONTINUATION APPROVED OMB /IO. 3/50M/04 EXPIRES: 8/31/88 FACILITY NAME (II DOCKET NUMBER (2I LER NUMBER ISI PAD F. LS)

YEAR 'A SSQVSNT/LL 4 ( 4(VISION r'AiS NI/MSF4 'LPK NUM E4 SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 0 5 0 0 0 4 p p 88 P 22 0 0 P 3 OFP TEXT /// moro s/>>st is ttu/rorf. ust ~ Frrroi>>n/I F/RC Form 3484's/ (171 ANALYSIS (continued)

This event is being reported in accordance with 10CFR50.73(a)(2)(i)(B) as a violation of Technical Specifications 3.3.3.l,lb Table 3.3-13 Action 46.

Previous similar events where estimated flow rates were not done as required were reported in LER-87-061-00 and LER-87-022-00.

CORRECTIVE ACTION/ACTION TO PREVENT RECURRENCE

1. The individuals involved in this event have reviewed this information and have been counselled.

2. The on-shift operations personnel have been reminded of the'mportance of attention to detail in general and the estimated vent stack flow rate requirement in particular by means of a night order issued on August 17, 1988.

NRC FORM 344L o U.S.OPO;1988 0 824 538/455 (9831

~5, Carolina Power 8 Light Company HARRIS NUCLEAR PROJECT P.O. Box 165 New Hill, NC 27562 SEP 0 7 1988 File Number'SHF/10-13510C Letter Number.'O-880181 (0)

U.S. Nuclear Regulatory Commission ATTN: NRC Document Control Desk Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 DOCKET NO. 50-400 LICENSE NO. NPF-63 LICENSEE EVENT REPORT 88-022-00 Gentlemen'.

In accordance with Title 10 to the Code of Federal Regulations, .

the enclosed Licensee Event Report is submitted. This report fulfills the requirement for a written report within thirty (30) days of a reportable occurrence and's in accordance with the format set forth in NUREG-1022, September 1983.

Very truly .yours, C.s R. A. Watson Vice President Harris Nuclear Project RJS:tbb Enclosure cc.'r. J. Nelson Grace (NRC RII)

Mr. B. Buckley (NRR)

Mr. W. H. Bradford (NRC-SHNPP)

/~2/

MEM/LER-88-022/1/OS1