ML19308D130

RO-77-53:on 770529,chemical Addition Pumps 3A & 3B Inoperable.Cause Unknown.Evaluation of Event Requested

ML19308D130
Person / Time
Site:	Crystal River
Issue date:	06/20/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19308D119	List: ML19308D118 ML19308D130
References
NUDOCS 8002270611
Download: ML19308D130 (2)

Text

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8' 57 LO 59 60 61 68 69 74 75 GL EVENT DESCniPTION a

l In mode 3 (hot standby) preparing for plant startup, both chemical addition pumps

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C3 l CAP-3A & 3B were found to be inoperable contrary to Technical Specification 3.1.2.2.

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M l N dundancy was maintained with the low pressure injection system.

Event was not i

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@l repetitive. Both pumos were flushed with demin watar and restored operable within 7 09 go Q] two (2) hours.

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grj l The cause of this event has not been determined.

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l ACOITIONAL FACTCAS

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N. P. Stewart

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SUPPLEMENTARY INFORMATION (V' -

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Report Nc.

50-302/77-53 2.

Facility:

Crystal River Unit #3 3: Report Date:

20, June 1977 4.

Occurrence Date: 29 May 1977 5.

Identification of occurrence:

Chemica1' addition pumps CAP-3A & 3B inoparable contrary to Technical Specification 3.1.2.2.

6.

Conditions Prior to Occurrence:

The plant was preparing to achieve' criticality by adjusting boron for the accept-able critical rod position..

7.

Description of Occurrence:

l At 0700 in preparation for criticality, an attempt to adjust Reactor Coolant boron f-concentration for acceptable critical rod position revealed that r.either chemical addition pump CAP-3A or CAP-3B would deliver boric acid to the makeup tank. -Both chemical addition pumps were flushed with demineralized water and the pumps restored operable within two (2) hours. Startup resumed without incident.

8.

Designatio'n of Apparent Cause:

The cause of P.his event has not been determined as of this' date, as the event has not reoccurred.

9.

Analysis of occurrence:

This event had no safety implications as the high pressure injection pumps and the bor9ted water storage tank were available and operable.

10.

Corrective Action:

An evaluation of this occurrence has been requested and corrective action will be taken pending results of the evaluation.

11.

Failure Data:

This was not a repetitive occurrence.

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