ML19276E272

LER 79-004/03L-0 on 790203:during Normal Operation,Cooling Tower Blowdown Exceeded Limit But Was Not Reported.Caused by Incorrect Completion of Surveillance Forms.Forms Changed & Personnel Instructed

ML19276E272
Person / Time
Site:	Fort Saint Vrain
Issue date:	03/05/1979
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19276E271	List: ML19276E270 ML19276E272
References
LER-79-004-03L, LER-79-4-3L, NUDOCS 7903120248
Download: ML19276E272 (3)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7 7.7)

, s LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 7

o 1 8 9 l C l O j F l S l V l 1 l@l 0 0l-l0l0l0l0l0l-LICENSEE CODE 14 15 LICENSE NUMBER 0

0l@l4 25 26 1l1l2 LICENSE TYPE JO 0l@l57 CATl 58l@

CON'T 7 8 SOu RCE l60L }@l610 l 5 l 0DOCK0ET]NUM8ER 0 l 2 l 6 l 687 QOJ 63 2EVENT l 0ClATE 3 l 7 l 749 l@l 75 0 REPORT l 3 l 0DATE 5l 7l 980 @

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2 During normal operation cooling tower blowdown exceeded 3. 75 million gallons per day, l 0 z l the LCO NR 1. 3 limit. The blowdown for 6-14-78 was 4.449 MGD and for 12-12-78 was l o 4 3.84 MGD. These violations were not reported because of errors in filling out the l 0 s I surveillance forms. This is reportable per Fort St. Vrain Technical Specification l 0 6 l AC 7. 5.2 (b)2. No effect on public health or safety. l 0 7 l l 0 s I l

80 7 8 9 SYSTEM CAUSE LAUSE COMP. VALVE CODE CODE SUSCCDE COMPON ENT CODE SUSCODE SUSCODE 7

O 9 8

l Hl F h l A h l B lh lZ ZlZlZ 9 10 11 12 13 Z Z lh Z lh 18 19 20 Zlh SEQUENTIAL OCCURRENCE REPORT REVISIOtJ

_ EVENT YEAR REPOR T NO. CODE TYPE N O. -

h "LER EPOar NU E RO l7!9l l- l0 l0 l4 l/l 10 l 3 l l L]

30 l-l l0 l 32

_ 21 22 23 24 26 27 28 29 31

^

TAKEN A CN ON PLANT VE HOURS 22 ^58 S MIN [ FOR B. SUPPLIE MAN FACTLRER lZl@ Zl@ 0l0l0l0l lY l@ lN l@ l43Z l@ Z l 9 l 9 l 947l@

l33H l@34G@ 35 36 3/ 40 41 42 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i O ] The cause for not properly reporting the events was incorrect completion of the sur-j i i l veillance forms. Forms have been changed and personnel involved instructed in oroner

, , l procedure on filling out the form. l i a l I i 4 1 7 8 9 80 STA S  % POWER OTHER STATUS OlS OV R DISCOVERY OESCRIPTION i s El@ 0l5 0 l@l N/A l l C l@l Audit of Surveillance Forms l ACTIVI TY CO TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE N/A l 7

1 6 8 9 l Zl @ 10Z l@l N/A 11 44 l

45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION i 7 l0 0l0l@lZl@lN/A l PERSONNEL INJURIES NUvaER DESCRIPTION 7

i a 8 9 l0l0l0l@l N/A 11 12 80 LOSS OF OR OAMAGE To FACILITY 1YPE D ESCRIPTION i 9 lZl@l N/A l 8 9 10 80 7

PU B L ICITY DESCRIPTION 79033207 g o NRc usE cNtY

• ISSUED ITiB8 l9 NI@lto 7

N/A fj-l 63 69 lllllllllllll}

30 I NAM F PR PAR # U J' w* Cahm PHONE: (303) 785-2253 2

~b REPORT DATE: March 5, 1979 REPORTABLE OCCURRENCE 79-04 ISSUE O OCCURRENCE DATE: Feb ruary 1, 1979 Page 1 of 2 FORT ST. VRAIN NUCLEAR GENERATING STATION PUBLIC SERVICE COMPANY OF COLORADO P. O. BOX 361 PLATTEVILLE, COLORADO 80651 REPORT NO. 50-26 7/ 79-04/ 03-L-0 Final IDENTIFICATION OF OCCURRENCE:

On February 1,1979, two violations of Technical Specification LCO NR 1.3 were discovered to have occurred during the previous year. Failure to report these events is a reportable occurrence per Fort St. Vrain Technical Specifi-ation AC 7.5.2(b)2.

EVENT DESCRIPTION :

The total quantity of cooling tower blowdown, as determined by the difference la blowdown integrator readings taken at 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> one day to 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> the next day, exceeded the limit of LCO NR 1.3 which is 3. 75 million gallons per day (MGD). On June 14, 1978, the blowdown was 4.449 MGD. On December 12, 19 78, the blowdown was 3.84 MGD.

These violations were discovered during an audit of surveillance records.

The surveillance form did not clearly call out what deficiencies were to be reported and chemistry personnel did not correctly complete the form.

CAUS E DES CRIPTION ;

The cause of the excessive blowdown rates are undetermined, but these appear to be unrelated incidents as the chemistry reports for both days fail to in-dicate any need for excessive discharges and all chemical concentrations were within acceptable linits.

The cause for not reporting the incidents when they occurred was incurrect completion of the surveillance form by chemistry personnel. This could, in part, be attributed to the surveillance form not being clear on what should be reported as a deficiency and the actual LCO limit not appearing on one of the data sheets.

i REPORTABLE OCCURRENCE 79-04 ISSUE O Page 2 of 2 CORRECTIVE ACTION:

The excessive blowdown rates were corrected the following day. The surveil-lance form was revised to show the LCO limits clearly and the chemistry per-sonnel were informed of the correct method for marking deficiencies on the surveillance forms.

No further corrective action is anticipated or required.

Prepared by: _ fM M //

Asa B. Reed /

Technical Services (Technician Reviewed by:

f' l #

/(/d/f*/

J. W. Gahm Technic'al Services Supervisor Reviewed by: }&M Frank M. 1:athie Operations Manager Approved by: [L W% f,,M Don Warembourg [

Manager, Nuclear Prcduction