ML19308D201
| ML19308D201 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 06/14/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19308D199 | List: |
| References | |
| NUDOCS 8002270665 | |
| Download: ML19308D201 (2) | |
Text
' O SUPPLDfENTARY INFORMATION b
1.
Report No.:
50-302/77-49E 2.
Facility:
Crystal River Unit #3 3.
Report Date:
14 June 1977 4.
Occurrence Date:
6 June 1977' 5.
Identification of Occurrence:
Unplanned release of radioactive waste gas contrary to Environ-mental Technical Specifications 5.6.2.A.
6.
Conditions Prior to Occurrence:
d Normal Mode 1 Operation.
7.
Description of Occurrence:
At 1400. in the progress of venting the makeup tank to the waste gas low pressure header, an unplanned radioactive gas release to the Auxiliary Building occurred. The maximum instantaneous release rate at the peak of the discharge pro-file was 6.4% of the most restrictive limit set forth in Specification 2.4.2A. (1).
Supply air to the Auxiliary Building
)
was re-established and ventilation of the building resumed s
within three minutes.
8.
Designation of Apparent Cause:
Blown loop seal of waste gas decay tank connected to waste gas low pressure header.
9.
Analysis of Occurrence:
The health sud safety of the plant and general public were not affect 10.
Corrective Action:
The loop seal was re-established and surveillance of loop seals has been increased to preclude re-occurrence.
11.
Failure Data:
This was the first reportable occurrence of this type.
a 8 o os are [C5-
LICENSEE EVENT REPORT l
CONTROL DLOCK:l l
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l (PLEASE PAINT ALL NtOUIRED INFO'1M AT*o7JJ 1
6 sp\\
LCENSE E LCtNSE EVENT I
NAME LCENSE NUP*0En twE fvrE f
(_)l Fl Ll cl Rl Pl 3l l0l0l-l0l0l0l0l0l-l0l0l l4l l
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l l0l4l 7 89 14 15 25 26 30 C.
32 CATEGORY fY SU DOCKET NUMOEA EVENT DATE REPonf DATE
@ CONT l l _ l W W l ol gl ol-l ol ;l ol 2l l ^' 6l 0l 6 l 7 l 7 l l0l6l1l4l7l7l 7 8 57 58 59 60 61 68 49 74 75 00 EVENT DESCRIPTION DE l In Mode 1 c,peration, in the progress of venting the makeup tank to the waste gas low l
7 89
.eO E@ l pressure header, an unplanned radioactive gas release to the Auxiliary Building occurred l 7 09 vo EE l contrary to Environmental Technical Soecifications 5.6.2. A.
Redundancy N/A. Venting l
7 89 80 3E l vas ceased and buildine evacuated immediately. The sunolv nir to the Ativiliary Buf1dino!
7 09 80 MI was reestablished._andJantilation ranumed ufchin ehrpa minuraa (See Additional Factors) l 7 8,9 80 Sysrsu CAuSE covPora m Cwmtsr (LER 77-49E)
CODE CODE COMPONEPJT CODE SUPPUEA MANUFACTUAE R VOLATON Q lM l B l Q l Zl Zl Zl Zl Zl Zl l Zl l 2l 9 l 9 l9 l (N_j 7 89 10 11 12 <
17 43 44 47 48 CAUSE DESCRIPTION Q
f O
l This event was caused by blown 1000 seals to the unneo enn Inu nroccura hondor.
7 89 80 l Seals were reestablished and surveillnnce
'ncrancad.
l 0
of chan i
7 09 80
\\l l
J 00
-(j raCiufy METHOo CF SeATUS 4 POWEn OTHER STATUS CISCOVEny oISCoVERY DESCArPTON 1
1 O! O!
N/A l
lHichAlarmon RMA2e Shurrine Off Aur.
70
,cgu 0, 10 12 13 44 45 46 80 Bldg. Supply Air Fans.
FELE SEo oF FASE AMOUNT OF ACTIVITY LOCATON OF RELEASE W
dl 33 curies noble nas l
lReleasetoAux. Blde.. Vent to Atmos.
1 7 8 9
10 11 44 45 00 PERSONNEL EXPOSURES NUMBER TYPE DESCAtPTOPJ gg l 0l 0l d Wl N/A l
7 89 11 12 13 60 PERSONNEL INJUDIES NUMOEn DESCRIPTON DE I nl nl A I
N/A l
7 09
~
i1 12 80 OrrSi1E CONSEQUENCES Ql N/A l
7 UD UO LOSS On OAMAGE TO FACILITY TYPE DESCn!Prord D2 lZJ l
n/A l
7 89 10 bU PUDLICITY M l N/A
)
7 09 W
(
pODITIONAL FACTORS hl Surveillance of'the header loop seals was increased to preclude re-occurrence.
l 7 09
,,0 This was not a repetitive occurrence.
io I 1S b (813) 866-4159 N.E.
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