ML17278A294
| ML17278A294 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 06/23/1985 |
| From: | Gill R AFFILIATION NOT ASSIGNED |
| To: | Butler W NRC |
| References | |
| TAC-56945, NUDOCS 8507240051 | |
| Download: ML17278A294 (5) | |
Text
RESULATO~ INFORMATION DISTRIBUTIONSTEM'RIBS)
V ACCESSION NBR s 8507200051 DOC ~ DATE o 85/04/23 NOTARIZED'O,.
DOCKET FACIL;50 397
'ISPPSS Nuclear Projects Unit 2g 'llashington Public Powe 05000397 AUTH INANE AUTHOR AFFILIATION GILLiR.
Affiliation Not Assigned RECIP ~ NAMEl RECIPIENT'FFILIATION BUTLERiW.RO NRC No Detailed Affiliation Given SUBJECTS Comments on 850227 application for,amend to license replacing high discharge signal w/pump running input from pump breaker.Proposed changes will not solve problem,"
Reevaluation of proposed=
amend urged; DISTRIBUTION CODE:
A001D COPIES RECEIPEDIL'TR ENCL SIZEi- '
0 TITLER Submittalg General Distribution NQTES0 OL.t 12'/20/83 05000397 RECIPIENT ID CODE/NAME NRR LB2 BC 01 INTERNAL'R ACRS 09=
ELD/HDS2 NRR/DL DIR NRR/DL/TSRG NRR/DSI/RAB RGN5.
COPIES LTTR ENCL" 1
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EXTERNAL: 24X LPDR NSIC 03 05 1
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Rick Gill E.
3207 20th Spokane WA. 99203 t'une 23, 1985 NRC 1717 H. Street, N.W.
Wash'eton D.C.
20555 Att.
Walter R. Butler WPPSS WNP-2 apalication dated Feb.
27,1985
Dear Nr. Butler,
I'ish to comment on the purposed amendment of the ooerating license for WNP.-2.
The revision to the specifications as listed in the Public Notice (copy attached) may neither solve the problem or be the most techincally correct solution.
I The amendment "seeks to re~lace th'e high discharge signal with a pump running input taken from the pump breaker.
- Thus, the valve would ooen on low flow and 'breaker closed (pump running) and would close on high flow or with the breaker open."
The ao~arent intent is to control a valve from a combination of sensing flow and the running condition of a
@umph Unfortunatly the state of a breaker (open or closed) does not usually indicate the running condition of' pump.
A breaker closed indication at best may indicate that the pump is able to run.
Intervening disconnect switches and starters would be able to stop (secure) the pump.
The proposed system would most likely result in a control signal indicating gunn running all of the time.
This would probably increase the likelyhood of aggravating the orginal problem.
A better indication of pump running condidtion would be an auxiliary interlock on the pump starter.
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An auxiliary interlock is a device which attaches to the starter and opens and closes as the starter open and closes.
The relability of the system would be
.nhanced by the addition of a power. monitor attached to the line,.side".of the starter givinI; an indication that power to operate the pump is avaliable at that ooint.
An alternate solution to the problem would be the addition of a current relay to monitor the the current draw of'he pump.
A pump drawing current indicates the pump is operating while a pump drawing zero current indicates a
pump not operating.
In short I do not, believe that the proposed changes will solve the indicated problem and that correct solutions have been overlooked.
I would urge you to reevaluate the proposed amendment.
Yours Cr le Sr Rick Gill 5o9-535-956o