ML18227A438

Letter Transmitting Licensee Event Report, Low Level in Refueling Water Storage Tank in Unit 4 Occurred on 2/14/1976 in Accordance with Technical Specification 6.9.2 to Provide Prompt Notification

ML18227A438
Person / Time
Site:	Turkey Point
Issue date:	02/26/1976
From:	Schmidt A Florida Power & Light Co
To:	Moseley N NRC/RGN-II
References
PRN-LI-76-33
Download: ML18227A438 (10)

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~NRC FORM 195 U.S. NUCLEAR REGULATORY COMI ION DOCKET I'I UMBER I2-70) 50-251 FILE NUMBER NRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL INCIDENT REPORT TOI FROM: DATE OF DOCUMENT N.C. Hoseley Flordia Power 8 Light Co. 2-26-76 Miami, Flordia DATE RECEIVED A.D. Schmidt 3-9-76 OLETTE R O NOTOR IZ E D PROP INPUT FORM NUMBER OF COPIES RECEIVED I7lI ORIGINAL SUNCLASSIFIED OCOPY DESCRIPTION ENCLOSURE Ltr. trans the following....... RO ¹ 76-2, on 2-14-76, concerning Low Level in Refueling water storage Tank.;....-

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PLANT NAME: Turkey Point ¹ 4 NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J COLLINS SAFETY FOR ACTION/INFORMATION ENVIRO RANCH CHIEF: ear W 3 CYS FOR ACTION LIC. ASST: arras W/ 'CYS RS CYS ENT TO LA INTERNAL D IST RI BUT!ON I&E 2 CHROEDER/IPPOLITO VAK CHECK

>AS EDE CO MACCA IAO LLMER BUNCH FR OL NS EXTERNAL DISTRIBUTION CONTROL NUMBER R: iamb, or IC 2363 NRC FORM 1BB (2-76)

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. BOX 3100 MIAMI,FLORIDA 33101 CZ FLORIDA POWER 5 LIGHT COMPANY y 4*y 8

February 26, 1976 I PRN-LI-76-33 4 1--

iT II il Mr. Norman C. Moseley, Director, Region Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 230 Peachtree Street, N. W., Suite 818 Atlanta, Georgia 30303

Dear Mr. Moseley:

REPORTABLE OCCURRENCE 251-76-2 TURKEY POINT UNIT 4 DATE OF OCCURRENCE: FEBRUARY 14, 1976 LOW LEVEL IN REFUELING WATER STORAGE TANK The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9.2 to provide prompt notification of the subject occurrence.

Very truly yours, A. D. Schmidt Vice President Power Resources MAS/jn Attachment cc: Jack R. Newman, Esquire Director, Office of Inspection and Enforcement (40)

Director, Office of Management Information and Program Control (3) 236'ELPING BUILD FLORIDA

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LIIIlIOBEE EVENT REPORT

. CONTROL BLOCK

(PLEASE PRINT ALL REQUIRED INFORIVIATION) 1 UCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE

@01] F L T P S 4 0 0 0 0 0 0 0 0 0 4 1 1 1 7 89, 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT OATE REPORT DATE

~0100NT~ T 0 ' 5 0 0 2 5 1 0 2 1 4 7 6 0 2 2 6 7 6 7 8 57 58 59 60 61 68 69 74 75 80 I

EVENT DESCRIPTION 7

Qo I8 9 Durin a routine eriodic check performed in accordance with Operating Procedure 80 0204.2 a s ecial test a e was used to determine the actual water level in the 7 89 80

~04 Refuelin Water Stora e Tank. The tank was found to contain 316,800 allons which 7 8 9 80 S f a io Concurrent 7

Qp I8 9 jwith makeup to the tank,,:a unit shutdown. per Administrative .Procedure 0103.8-was-PRME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT COBE SUPPLER MANUFACTURER

[ogy] ~Zp B T N 5 T R 0 N B 0 4 0 Y 7 8 9 10 11 12 17 43 47 48 CAUSE DESCRIPTION

'~ 6 At the time of the occurrence the control room a e read 323,000 gallons. The gage 7 8 9 80

$09 is a wide range Baile T e PM multi-point indicator gage. The proposed long range 7 8 9 80

~1 0 corrective action includes the installation of a narrow range gage in the Control 7 89 FACIUTY METHOD OF 80 STATUS POWER OTHER STATUS OISCOVERY OISCOVERY OESCRIPTION

~11 ~E ~10 0 NA b Weekly RWST level check 7 8 9 10 12 13 44 45 46 80 FOAM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q~g z z NA NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION

~B ~OO O Z NA 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION 7

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89'1~oo o 12 NA 80 PROBABLE CONSEQUENCES NA 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION t116I z NA 7 89 10 80 PUBLICITY NA 7 89 80 ADDITIONAL FACTORS

~1 8 See followin a e for continuation of Event Description and Cause Description.

7 89 80 7 89 80 NAME: M. A. Scho man PHONE. 305/552-3779 GPO 88 I ~ 887

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Reportable Occurrence 251-76-2 Licensee Event Report Page Two Event Descri tion continued) initiated. Approximately one-half hour later, the tank level was within specification. This is the first Reportable Occurrence related to a non-conservative Refueling Mater Storage Tank level. (251-76-2).

Cause Descri tion (continued)',

Room as a backup to the wide range gage, and the installation of an Ashcroft test gage on each RMST as a permanent local backup to the Control Room gages. If J.ocal gages are installed, a program will be developed to provide adequate periodic calibration. A design review of the RWST level indicating system is being conducted to evaluate the feasibility of the proposed corrective action. A supplementary report will be submitted if the actual corrective action is different from the proposed corrective action.

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Turkey Paint PI@at Pebruary I.T 2976 J K'ays: CAXSVD E .Taesar D. Q Haa J. E moore D Q'on.

w;auacmr QBTT 4 RSPOETEBLE ~66&CE V. B. @agar A. K. Haz NO'53.-7& 2s RZFUEiZM WATER J P Tucker (by. telac.

STOBACR '.PK%C 'CONTEKZS BSMQ g J P HerriU.at a LCO qUABTXZT Fo1'Rowing are the pzeliminazy facts related to this reportaMe occurrence=

r On Saturday day shX,ft, 2/14/76 the routine periodic check of Refueling Rater Storage Tank 1evel was performed in accordance with Operating Procedure 0204.2. Thf.s check consists of connecting a special test gage ta determine the actual tank Level and comparing tM.s vaEva to the contro3. rome indication Prom tha head pressure contents. vere it 31&,890'aZlons vas determined that the actual Ho. 4 MT wMck is he1car the Tech Spec (3'.4.1.a.3.}

LCO value of 320,000 gallons. At thM tea the control room gaga read 323,000 gallons.

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it was determined that the EST was balan the LCO value (9.30 a.u a unit shutdcnar was ixd.tiated par Adminfatrative Procedure OM3.8 and I

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makeup to the ERST was fxd.tiatad concurrent'.

The ERST was within specification and tha Road reduction was texminated at 9:56 a.m. after a 25 HMa raductioa A. revX~ o& records. and dimcusskoa wfth operations personnel indicates makeup water was transferred to No. 4 Spent Fuel Pit from No. 4 KIST on tha Friday 2/13/7S mid shift.

He A K. Hardin, USHRC~ has been notified of this occur anca by. telephone J. K Ha.

P Rant. 8 x5ntandant Nzclaae

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I I COQiRV'SSF WAS Ft%SHOX rrr FOR R ORfOh rrrFDR'OUR'PA4>AH'YrrrPOR YOU)

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