ML19308D261
| ML19308D261 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/06/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19308D252 | List: |
| References | |
| NUDOCS 8002270711 | |
| Download: ML19308D261 (2) | |
Text
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V.entine was ceased and the Auxiliary Building was evacuated irrmediately.
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[03 Uh.e sucolv air to the Auxiliary Buildine was reestablished and ventilation resumed
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'h MI The cause of this event is unknown at this time and ~ is beine investigated.
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800227097
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SUPPLEMENTARY INFORMATION a
1.
Report No.:
50-302/77-61E 2.
Facility:
Crystal River Unit #3 3.
Report Date:
6 July 1977 4.
Occurrence Date:
26 June 1977 5,
Identification of Oc.
' e vaste gas contrary to Environmental Technical Unplanned release at Specification 5.6.2.A.
6.
Conditions Prior to Occurrence:
Mode '4 Hot Shutdown i
7.
Description of Occurrence:
At 0115 while venting the makeup tank to the waste gas icw pressure header, an unplanned radioactive gas release to the Auxiliary Building occurred. The maximum instantaneous release rate at the peak of the discharge profile was 87.
i of the most restrictive limit se t forth in Specification 2.4.2A(1).
Supply air
\\s, was re-established to the Auxiliary Building and ventilation resumed.
8.
Designation of Apparent Cause:
Unknown at this time.
Previous release, LER 77-49E was associated with a blown loop seal, however, this release occurred with all seals functional in the waste gas header system.
9.
Analysis of Occurrence:
The health and safety o f the plant and general public were not affected as the maximum instantaneous release rates were not exceeded.
10.
Corrective Action:
An investigation is underway to establish the cause in order to define necessary corrective action..As yet, no conclusion has been reached.
11.
Failure Data:
This was the second occurrence of an unplanned release originating from the waste gas system. See LER 77-49E dated 14 June 1977'.
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