ML19326A568: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(StriderTol Bot change)
Line 66: Line 66:
                 @ elNA                                                .
                 @ elNA                                                .
                                                                           -                                                                                                                                                  l ADOstso=At s ACTORS l              @lu 1      es                                        .
                                                                           -                                                                                                                                                  l ADOstso=At s ACTORS l              @lu 1      es                                        .
                                                                                                                                                                                                                              ;
O IT[qiy._                                                                                                                                                                                                      ,
O IT[qiy._                                                                                                                                                                                                      ,
3 s:                                                                                                                                                                                                  -y
3 s:                                                                                                                                                                                                  -y
Line 90: Line 89:
Correct'ive Action: After recalibration of the pressure indicators, the surveil-lance test was performed at 1600 hours en .Miy 12, 1977, and the pump met the                                                  - - - -
Correct'ive Action: After recalibration of the pressure indicators, the surveil-lance test was performed at 1600 hours en .Miy 12, 1977, and the pump met the                                                  - - - -
acceptance criteria. This removed the plant from the Action Statement of Techni-cal Specification 3.6.2.1. To prevent recurrence, the calibration frequency g                        will be increased as necessary to insure that these instruments remain within i                        their tolerances.
acceptance criteria. This removed the plant from the Action Statement of Techni-cal Specification 3.6.2.1. To prevent recurrence, the calibration frequency g                        will be increased as necessary to insure that these instruments remain within i                        their tolerances.
;
Failure Data: No previous similar events have occurred.
Failure Data: No previous similar events have occurred.
t
t

Revision as of 17:37, 18 February 2020

RO NP-33-77-21:on 770711,during Monthly Surveillance Test, Containment Spray Pump 1-1 Failed to Meet Pump Head Acceptance Criteria.Caused by Suction Pressure Indicator & Flow Transmitter Found Out of Calibr.Parts Recalibr
ML19326A568
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 08/04/1977
From: Batch S, Lingenfelter J
TOLEDO EDISON CO.
To:
Shared Package
ML19326A527 List:
References
NUDOCS 8002040742
Download: ML19326A568 (2)


Text

{{#Wiki_filter:- . . . - . . .

   .                                                                                                                                                                                                                                     t
                                                                  ,m
                                                                                                                                                             ~
       ' O. '                           ~

1.lCENSE E E'.'ENT R EPORT s cominot stocs - Lj i f lj G

                                               * ** t                                                                                                                "' I L't"),g" LeCCNSC measuot a                                                                                           3"," "g' l0;Oj-J 0101 Ni P FI-101 3l -l 4 11l1 l 1! 1; l 0l3 l
                @]9IolH l DIB l Sill4. - 35                                                                                                  Jb       .N                           Jo JPA C A t t Co# O                  te s                         cocett f aevaset a                                       g gg m e ria s                                      aC* oat cas t 0: com it i I 1L l LLs to t S i c i ..i : 03 :4 : 6,                                                                       t1071,1,77                                 . 0i 8; 0 4,7 ; 7, si       !4 '3r                E'          si                                                         64   ss                               2.             is                            ao tvtuf of SCaiP1 TON g lDuring the Containment Spray System Monthly Surye111ance Testl Containment
                > as                                                                                                                                                                                                       so glSprayPump1-1failedtomeetpumpheadacceptancecriteria.l Pressure                                                                                                                                                ;

a es a g lwas above the maximum acceptable limit. This is not a repetitive  ; 7 es . E i es Ioccurrence. (NP-33-77-21) .  ; ao

                 ** l.                                                                                                                                                                                                        I i
       -                  I              5 '"'c'            en                                       CNdE'h"'                          old'Oryc",'",,'c,          ,,,,a,.
               @. l.N""I
                                          $I >>

I I 2 NS in~.iT ~, [[U, ,i i R12 19 10 I [NJ caust otScais tion g l Suction pressure indicator and flow transmitter were out of calibration. _ _ . _ l s gg'Theywererecalibratedandthepumpthenmettheacceptancecriteria. u l

             \                                                                                                                                                                                                             =

gl - J s as M I

                           #g"s#'

a s so tog a status pe's Yav DescovCav nESCnervoom I DI 01 1.A l (pj ( NA J 3 to s2 13 .4 .t 46 80 at ofNe'$NC auovast or acievetv Lof.A1no*e o' mL LCasC

               @, .             [ Zj                       l_NA                                                         l

[M-Z .. . l,NA I PtnSoNNE L E X PO5Umt5

                                                 ...         o.,,C.....         m RI,'uge,3       ' ' , , ' l!*)

L "^

                                                                                                                               ~~

PtnSoNastt tNJumis J munseC m nt sc a.ev som , . O I Ol 01 I NA - g

                                       .i         u                       --

08 FSI1E con 58OutNCE5

                   *                                                                                                                                                  .                                                    N LOSS 084 OAnanGL TO F AcILif v                                                                                                   .

s vet otsc a se viom

               @,VJ i.8^                                                                                                                                                                                    ~,
                                                                                                                                                                            .                                              J                   -

PUtteCIf? .

               @ elNA                                                .
                                                                          -                                                                                                                                                  l ADOstso=At s ACTORS l               @lu 1      es                                         .

O IT[qiy._ , 3 s: -y

                                     ,,,,           Jacque Lingenfelter/Stan Batch                                                                                   (4197'259-5000, Ext. 251 8 0 02 0~ **4 034>
                                                                              ~
  ~

m ~

             ~        -

s . . TOLEDO EDISON COMPANY , k./

  • DAVIS-BESSE UNIT ONE NL* CLEAR PO'ER STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-77-21 DATE OF EVENT: July 11, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRE' ICE: Failure of Containment Spray Pump 1-1 to meet pump head acceptance criteria.

e Conditions Prior to O'currene_e_: The plant was in Mode 4 with Power (MWT) = 0 . and Load (M'K) = 0. Description of Occurrence: On July 11, 1977, at 0005 hours, Operations per-

  ~ ~ " ~ ~

sonnel performed ST 5062.01, Containment Spray System Monthly Test, during which Containment Spray Pump 1-1 failed to meet the pump head acceptance cri-teria. The pump differential pressure _was 180.8 psid which is above the maxi-mum acceptance criteria of 179.5 psid. This placed the plant in the Action Statement of Technical Specification 3.6.2.1. h-

                     . Designation of Apparent Cause of Occurrence: After investigation, it was found that the suction pressure indicator, PI-1591 and flow transmitter, FT-1547 were out of calibration. This was the reason that the indicated pump performance data exceeded its acceptance criteria.

Analysis of Occurrenca: Since the pump would have met its required flowrate under accident conditions, there was no threat to the health and safety of the i l public or station personnel. Correct'ive Action: After recalibration of the pressure indicators, the surveil-lance test was performed at 1600 hours en .Miy 12, 1977, and the pump met the - - - - acceptance criteria. This removed the plant from the Action Statement of Techni-cal Specification 3.6.2.1. To prevent recurrence, the calibration frequency g will be increased as necessary to insure that these instruments remain within i their tolerances. Failure Data: No previous similar events have occurred. t

    ~(

l'

                               ._               . . _ . .         _ _ _ . _ . _ . _ _ , . - . _ _ , _ _ . _ - _ . . _ _ . - - _ _ _ . - , . _ . _ . - _           . .}}