ML18227A439

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

ML18227A439
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: ML18227A439 (7)

Text

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V.S. NUCLEAA IREGVLATOAYCOMMISSION DOCKET NUMOf;A FILE NUMOEA XNCXDFHT REPORT DATL OF DOCUMENT N. C. Moseley Florida Power 6 Light Co 2-26-76 Miami, Fla.. 33101 DATE AECEIVED A.D. Schmidt 3-5-76 LETTF A QNOTOAIZED P AOP- INPUT FOAM NVMeEA OF COPIES AEcr IUED 0 A IGINAL 0 UN C LASS IF I E D aPCOPY 1 cy',

DESCRIPTION ENCLOSV AE Ltr trans the following Licensee Event Rpt 50'-251-76-2 on 2-14-.76 re Low Leuel in Refueling Water.,Storage Tank r

ACKNOWLEDGED (1 cy encl.).;("

DO NOT REMOVE PLANT NAIIE: Turkey Pt g4 NOTE: XH PERSONNEL EXPOSURE XS INVOLVED SEND DIRECTLY TO I<REGER/J ~ COLLXNS SAP)'TY FOB ACTION/INFORMATION ENVXRO BRA)iCH CHIEF:

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February 26, 1976 PRN-LI-76-33 g, rPPPPgp Mr..Norman C. Moseley, Director, Region Office of Inspection and Enforcement II U. S. Nuclear Regulatory Commission /~iQ~%g~

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'ttached 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,

+c S'(j,: +C~ID A. D. Schmidt 4%yg0 Vice President I"I8g Power Resources ( II

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MAS/jn Attachment cc: Jack R. Newman, Esquire Director, Office of Inspection and Enforcement (40)

Director, Office of Management Information and Program Control (3)

HELPING BUILD FLORIDA

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LlCENSEE EVENT REPORT CONTROL BLPCK: SE PRINT AU. REQUIRED INFORIHATIDN) 1 UCENSEE UCENSE EVENT NAME LCENSE NUMBER TYPE TYPE

[ODi] F L T F 5 4 0 0 0 0 0 0 0 0 0 4 1 1 1 ~01 7'89

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14 15 25 26 30 31 32 REPORT. REPORT CATEGORY TYPE SOURCE OOCKET NUMBER EVENT OATE AEPORT OATE

~01 OONT T ~L 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 T51 68 69 74 75 80 I

EVENT OESCRIPTION IOO~j Durin a routine eriodic check performed in accordance with Operating Procedure 7 8 9 80 0204.2 a s ecial test a e was used to determine the actual water level in the 7 8 9 80

~0 4 Refu'elin Water Stora e Tank. The tank was found to.contain 316,800 allons which 7 8 9 80 Jog a io Concurrent 7 8 9 80 Qp 6 with makeup to the tank, a unit shutdown per Administrative Procedure 0103.8 was 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT COBE COOE . COMPONENT COOE SUPPUEA MANUFACTURER 7

[Oarj ~IF 8 9 10

~B 11 12 I N 5 T R 0 17

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N 43 44 B 0' 0 47 Y

48 CAUSE OESCRIPTION

[OD~] At the time of the occurrence, the control room age read 323,000 gallons. The gage 7 8 9 80 tOOI is a wide range Baile Ty e PM multi-point indicator gage. The proposed long range 7 89 80

[iso] corrective action includes the installation of a narrow range gage in the Control 7 8.9 80 FACIUTY METHOO OF STATUS  % POWER OTHER STATUS OSCOVEAY OISCOVEAY OESCAIPTION

~>1 ~E ~10 0 NA b Weekly RWST level check 7 8 9 10 12 13 44 45 46 80 FOAM OF ACTMTY CO@TENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY . LOCATION OF RELEASE Pig . z ~z NA NA r 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCAIPTION

~s ~oo z NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER OESCAIPTION Q4] ~oo o NA 7 89 11 12 80 PROBABLE CONSEQUENCES Qi7s NA 7 8 9 80 LOSS OR OAMAGE TO FACILITY TYPE OESCAIPTION

~z NA 7 89 10 PUBLICITY NA 7 89 80 AOOITIONAL FACTORS

[gg See followin a e for continuation of Event Description and Cause Description.

7 89 80 7 89 80 M. A. Scho man PHONE. 305/552-3779 GP0 8I51 ~ Eel

Reportable Oocur'rence 251-76-2 Licensee Event Report

.Page Two Event Descri tion continued) initiated. Approximate'ly one-half hour later, the tank level was within specification. This is the first Reportable Occurrence related to a non-conservative Refueling Water 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 RWST as a permanent local backup to the Control Room gages. If local 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's different from the proposed corrective action.