ML19308E005
| ML19308E005 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 06/14/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19308E002 | List: |
| References | |
| NUDOCS 8003200740 | |
| Download: ML19308E005 (2) | |
Text
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. i UCENSbb EVENI HEPUHI
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[pt SE PRINT ALL REZUIREJ INFEM.1 AT*CTJ e.
LCENSEE LCENSE EVENT NAME LCINSE NUMBER fvPE-TYPE o1 l Fl Ll Cl Rl Pl 3l l 0l 0l-l 0l 0l 0l 0l 0l-l 0l 0l l4l l
l 'l l l0l4l 7 89 14 15 25 26 30 31 32
"'N NE cArtcoRY 1
OoCKET NUM0ER EVENT DATE REPORT DATE 04 CONTl=l l
Ltl LtJ l o f si ol-l a l a l o l 21 Iof61of617171 101611141717 7 u b7 LO b9 60 61 60 09 74 75 Ut EVENT DESCR4PTION DE l In Mode 1 operation, in the progress of venting the makeup tank to the waste gas low j
7 09 Out BE I pressure header, an unplanned radioactive nas release to the Auxiliary Building occurred l 7 il D Du h!
contrary to Environmental Technical Specifications S.6.2.A.
Redundancy N/A. Ventina l
7 09 80 3E l was ceased and building evacuated immediately. The nunolv air to the Aurf 11 mrv Buildino-l 7 0@9 O(*
l was reestablished And 3RDt41 n rion rounmad uichin chroa minne...(See Additional Factors) l 7 89 LD
' 'SS" C#"*"
(LER 77-49E)
C0OE COMPONf NT CODE R
M u R VIOLATON Q ]MlBl @
l Z l 2 l Zl Zl Zl Zl W
l2l9l9l9l W
7 80 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION 9
EE l This event was caused by blown loon senin to rho un=co one Inu l
7 89 nr = auro h.
A.,
80 SE I seals were reestablishea and surveritance ne cham 'ncr....a.
I 4
7 09 80 DE I I
7 09 00 fatnny METHOD OF Status
% POWER OTHER STATUS DISCOVEny DISCOVERY DESCMTON l l! ol o! !
N/A l
lHiohAlarmon 1
l RMA2e Rhurrine Off Anv.
7 0 9
10 12 i3 44 45 46
,aay o, Bldg. Supply Air Fans.
80 ACrmTY C04ffNT flELE ASE D OF F'ELEASE l AMOUNT OF ACTMTY LOCATON OF AELEASE 30 W
d 33 curies noble nas l
lReleasetoAux. Bldg.. Vent to Atmos.
7 8 9
10 11 44 45 00 SERSONNEL EXPOSURES NUMDEA TYPE DESCRIPTICW Q l 0] 0l d
[_Z_j l__
N/A l
7 89 11 12 13-GD PERSONNEL. INJuniES NuMcAn OESC p TON 3l l nl nl d l
N/A l
7 09 '
~
i1 12 uo OFFSITE CONSEQUENCES Ql N/A l
7 UD 00 LOSS OR DAMAGE TO FACluTY TYPE DESCR'PTION hdl N/A f
7 89 10 I;o PUDUCtTY BE I N/A j
7 89 pi AODtitONAL FACTORS E l Surveillance of the header loop seals was increased to preclude re-occurrence. ---....l 7 gg 8 0 0 3 20 0 WO This was not a repetitive occurrence.
NAME:
k PHONE: (813) 866-4159 l
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-SUPPLEMENTARY INFORMATION l.
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:
Normal Mode 1 Operation.
1-7.
Description of occurrence:
At 1400 in the progress of venting the makeup tank to the waste gas low pressure header, an unplanned radioactive gas t
release to the Auxiliary Building occurred. The maximum i
instantaneous release rate at the peak of the discharge pro-file was 6.47. 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 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 and safety of the plant and general public were not affected.
1 10.
Corrective Action:
i i
The loop seal was re-established and surveillance of loop seals has been increased to preclude re-occurrenca.
11.
Failure Data:
This was the first reportable occurrence of this type.
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