ML19319C988
| ML19319C988 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/26/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19319C985 | List: |
| References | |
| NUDOCS 8003040918 | |
| Download: ML19319C988 (2) | |
Text
LILCINO CC CV CIN I MCPUMi
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CONTROL BLOCA.,
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[PLEASC PRINT ALL RE%UtRED tr#0RMAT:C;'
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LCENSEE LCENSE EVENT NAME LCENSE NUMEER TYPE TYPE l FlL l ClR lP l3 l l0 l0 l-l0 l 0 l 0 l 0 l 0 l-l 0 l 0 l l 4 l 1 l1 l1 l 1l l0 l4 l 7 89 14 15 25 26 30 31 32 CATEcoRY f
5 coCx(T NUMBER ~
EVENT oATE REPORT oATE O 1 CON'T l - l -l lTl lLl l0l5l0l-l0 l1 ln l2 l l0 l7 l1 l9 l 7l 7l l 0 l 7 l2 l6 l7 l7 7 8 57 58 59 60 61 68 69 74 75 E
EVENT DESCRIPTION lIn mode 1 operation, the Reactor Building was purged for 22 minutes unmonitored causing g
7 89 E:
l a radioactive release to the atmosphere exceeding 100 pei/sec contrary to E.T.S. 2.4.2.G 03 7 8D This event was non-S l and K, 5.6.2. A and S.T.S. 3. 3.2.1, Table 3. 3-4.
Redundancy NA.
04 7 89 E
Mp l repetitive. Upon discovery the purge was ceased immediately, Reactor Building operating 7 oo e
Ots l procedure OP-417 has been revised to ensure the operability of the R.B. purge monitor 7 89 Paut (LER 77-74E)
E SYSTEM CAUSE COMPONENT COMPONENT coot coot couPcNeNT cooE suP5MR MANUFACTURER VOLATON
$.lSlBl ({J l Zl Zl Zl Zl Zl Zl lZl lZl9 l9[9l lYl 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION
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J, s l The Reactor Building operating procedure OP-417 did not' insure the operability of the R.B.
7 89 Et 09 l purge radiation monitor Rm-A1.
Op-417 har been revised to ensure operability of RM-Al be-7 89 S:
] l fore purging.
FAC UrY UETHoo oF Status
% POWER oTHEA STATUS LSCoVERY otSCoVERY oESCRi?TCN 1
lE l l0 l8 l8 l l NA l
lA l l
NA 78 9
10 12 13 44 45 46 BC
- [r"i nN ccMTENT A
RE'.EASto oF RELEASE l.739 curies noble l
l Reactor Bldst.
AMOUNT OF ACTMTV LoCATCN OF RELEASE y
W 12 gas vent to atmosehere 7 8 9
10 11 44 45 8;
PERSONNEL EXPOSURES NUMBER TYPE CESCRIPTCN 13 l 0l 0l 0l lZ l l
NA 7 89 11 12 13 Er PERSCNNEL INJUAIES NUMSER DESCRIPTON NE l 0l 0l 0l l
NA 7 89 11.12 6C h lOFFSITE CONSECUENCES NA 7 89 80 l
i LOSS OR OAMAGE TO FACILITY TYPE oESCRPTON l
NA 1
7 89 to LL l
PUBUC!TY
]l NA 7 89 UC
[]l ADDITIONAL FACTOAS
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l RM-Al before purging the Reactor Building.
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t9 l SEE ATTACHED SUPPLEMENTARY,JNFORMATION h/ M onnon4 7 89 j' /
"# VTV (( 6 to W. P. Steward, /
(813) 866-4159 NAME.
PHONE:
CPO 889 467
3-g SUPPLEMENTARY INFORMATION
. 1.
Report No.:
50-302/77-74E 2.
Facility:
Crystal River Unit #3-3.
Report Date:
26 July 1977 4.
Occurrence Date:
19 July 1977 5.
Identification of Occurrence:
An unmonitored radioactive release to the atmosphere exceeding 100 pei/sec contrary to Environmental Technical Specifications 2.4.2.G & K, 5.6.2.A and Standard Technical Specification 3.3.2.1, Table 3.3-4, 6.
- Conditions Prior to Occurrence:
Mode 1 power operation.
7.
Description of Occurrence:
At 10:45 in the progress of purging the Reactor Building, it was discovered that f.
radiation monitor RM-Al was inoperable. This constituted an unmonitored radioactive release to the atmosphere for a period of 22 minutes, at a release rate of 559.5 microcuries per second. The purge was ceroed immediately upon discovery and radiation monitor RM-Al restored cperable.
8.
Designation of Apparent Cause:
The cause of this event was due to a proc: dural inadaquacy in that containment operating procedure OP-417-did not insure RM-Al running while purging the Reactor Building.
9.
Analysis of Occurrence:
The health and safety of the plant and public were not affected as the 559.5 microcurie per second release rate for 22 minutes represented 0.041% of the maximum allowable instantaneous release rate.
10.
Corrective Action:
The Reactor Building operating procedure OP-417 has been revised to ensure operability of radiation monitor RM-Al before commencias Henctor Building purge.
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Failure 1:ata:
This was the first occurrence of this event.
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