ML19308D466: Difference between revisions

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| document report number = NUDOCS 8002280777
| document report number = NUDOCS 8002280777
| package number = ML19308D443
| package number = ML19308D443
| document type = REPORTABLE OCCURRENCE REPORT (SEE ALSO AO,LER), TEXT-SAFETY REPORT
| document type = REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER), TEXT-SAFETY REPORT
| page count = 2
| page count = 2
}}
}}
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=Text=
=Text=
{{#Wiki_filter:.
{{#Wiki_filter:.
g                                       *%
g UCENSEE EVENT REl-dHI CONTROL BLOCK:l l
UCENSEE EVENT REl-dHI CONTROL BLOCK:l             l     l   l       l l     l                           (PLEASE PAINT ALL REQUIRED INFC"T.1AT:C UCENSEE                                                                                       UCENSE                 EVENT
l l
          #                            NAME                                         UCENst NUM8ER                         ,        TYPt                   TYPE 01 l F l L l Cl R l P l 3 l 14 l0l0l-l0l0l010l0l-l0l0l25 15 l 4 l 1 !1 l1 l1 l 26                    30 lo la l 31     32 7 89                                                                  ,
l l
c4Tecen          "'E4' E'uE                         coexET NUMBER                         EVENT CATE                       REPoAT cATE
l (PLEASE PAINT ALL REQUIRED INFC"T.1AT:C UCENSEE UCENSE EVENT NAME UCENst NUM8ER TYPt TYPE 01 l F l L l Cl R l P l 3 l l0l0l-l0l0l010l0l-l0l0l l 4 l 1 !1 l1 l1 l lo la l 7 89 14 15 25 26 30 31 32
            . @ CONT l "l -l                     lTl     lLl       l0 l5 l0 l-l013 l0 l268l                    l nl vl,I o l r I, I SS                      74 l0 l8 !Il2l7l 75 7 8               57       38       59       60       61 EVENT DESCRIPTION                                                 .
"'E4' E'uE coexET NUMBER EVENT CATE REPoAT cATE c4Tecen
gg l In = ode 1 operati:n, it was determined on' 4 August 1977 by the PRC that on 29 fulv' ~
. @ CONT l "l -l lTl lLl l0 l5 l0 l-l013 l0 l2 l l nl vl,I o l r I, I l0 l8 !Il2l7l 7 8 57 38 59 60 61 68 SS 74 75 EVENT DESCRIPTION gg l In = ode 1 operati:n, it was determined on' 4 August 1977 by the PRC that on 29 fulv' ~
7       .8 9 g l and 2 August 1977, probable unplanned radioactive gas releases to the Auxiliary Building 7 89 gg l occurred contrary to E.T.S. 5.6.2.A.                                       Redundancy NA.         The fifth occurrence of this 7 89 Q l event. Due to the brevity of these releases there were no t easurabic chat ces % ^=
7
7 09                                                                                                                                                                 )
.8 9 g l and 2 August 1977, probable unplanned radioactive gas releases to the Auxiliary Building 7 89 gg l occurred contrary to E.T.S. 5.6.2.A.
  ,,            nE l continuous release concentrations.                                                     (LER 77-93E)                                                         l 7 89                                                                             pas                                                                                 I
Redundancy NA.
                            *EE         $$s'             teupoNENT cect                                                             VCLATCN                                 .
The fifth occurrence of this 7 89 Q l event. Due to the brevity of these releases there were no t easurabic chat ces % ^=
a 7 89 10 lM l3 l lEl 11 lZ l Zl Zl Zl ZI Zl 12                              17 l Zl 43        44 l Z l9 l 9l 9l 47 d48                              , ', J CAUSE DESCRIPTION                                                 /
7 09
le l These occurrences vere caused bv a bicvn loco seal on the waste evaoorator. Se loon 7 89                                                                                                 -
)
_~-                    ! seal was re-established on each occurrence.
nE l continuous release concentrations.
(LER 77-93E) 7 89 pas
*EE
$$s' teupoNENT cect VCLATCN a
lM l3 l lEl lZ l Zl Zl Zl ZI Zl l Zl l Z l9 l 9l 9l d
, ', J 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION
/
le l These occurrences vere caused bv a bicvn loco seal on the waste evaoorator. Se loon 7 89
! seal was re-established on each occurrence.
_~-
s' l
s' l
                              '/TE                s powen                 'cTwen status               "esSeaY                         escovany cesemmcN 1            (2l             l1l0l0l             l           ' NA                 l   l Al       l High radiation alarm on RMA-2e 7G               9             10           12 13                                 44     45     46 amount oF acDVITY                                                 LoCADcM CF REEASE IIIil            lGl        o7Ye'tEIsa INl                     l Noe measurable                       l 44      45 l Auxiliary w w--
s powen
7 8             9                 10     11 PERSONNEL EXPOSURES NUMSER           TYPE       DESCRWT'CN 1 83 l0l0l0l 7 89                     11 d!12     13 st s PERSONNEL INJUAIES Nuu8am             CEsemmcN                                             ,
'cTwen status "esSeaY
_            3 l0!Ol0l 7 89                       11 12 l                                  4A OFFSITE CONSECUENCES                                   .
'/TE escovany cesemmcN (2l l1l0l0l l
7 89                                                                                                                     J     Q c       JU LDSS OR DAMAGE TO FAC:UTY                                                                           n'         -
' NA l
O Typt     esscarncN                                                         ,                            D 1      L;J      l                                              m                                           .
l Al l High radiation alarm on RMA-2e 1
n u-vi     i   /A1 7 89               10                                                                                                                 .A u u Q PUSUCITY NA                                                                                             l 1       l 7 89                                                                                                     .
7G 9
ACCIT!CNAL FACTCRS                                                                              h6 O 2 ff g g
10 12 13 44 45 46 o7Ye'tEIsa l amount oF acDVITY LoCADcM CF REEASE INl Noe measurable l
  ~
l Auxiliary I Iil lGl I
7 89 l  _
w w--
(IEj l                                               SEE AT* ACHED SUPPLEMEITARY INFORMATION
7 8 9
;              7 89 l                                     NAME.       J. P. Stewart                   -
10 11 44 45 PERSONNEL EXPOSURES NUMSER TYPE DESCRWT'CN 1 83 l0l0l0l d!
PWCNE: 813/866-4150                                 l
st s 7 89 11 12 13 PERSONNEL INJUAIES Nuu8am CEsemmcN 3 l0!Ol0l l
* cro nes...     l
4A 7 89 11 12 OFFSITE CONSECUENCES 7 89 J
Q c JU LDSS OR DAMAGE TO FAC:UTY n'
O D
Typt esscarncN m
n vi i
/A1 L;J l
1 7 89 10 u-
.A u u Q PUSUCITY NA l
1 7 89 h6 O 2 ff g g ACCIT!CNAL FACTCRS
~
7 89 (IEj l SEE AT* ACHED SUPPLEMEITARY INFORMATION l
7 89 l
NAME.
J. P. Stewart PWCNE: 813/866-4150 cro nes...


              .                                SUPPLEMENTARY INFORMATION
SUPPLEMENTARY INFORMATION 1.
: 1. Report No.:                     50-302/77-93E
Report No.:
: 2. Fscility:                       Crystal River Unit #3
50-302/77-93E 2.
: 3. Report Date:                     12 August 1977
Fscility:
: 4. Occurrence Date:                 29 July 1977 and 2 August 1977 (discovered 4 August 1977)
Crystal River Unit #3 3.
: 5. Identification of occurrence:
Report Date:
12 August 1977 4.
Occurrence Date:
29 July 1977 and 2 August 1977 (discovered 4 August 1977) 5.
Identification of occurrence:
Unplanned radioactive gaa release contrary to Environmental Technical Specification 5.6.2.A.
Unplanned radioactive gaa release contrary to Environmental Technical Specification 5.6.2.A.
,    6. Conditions Prior to Occurrenca:
6.
Conditions Prior to Occurrenca:
Mode 1 power operation.
Mode 1 power operation.
: 7. Description of Occurrenca:
7.
It was discovered on 4 August 1977 that radiation monitor EMA-Z went into high alarm on two occasions. The =1=rms occurred on 29 July and 2 August 1977. The Plant Review     i Committee determined that a probable unplanned radioactive gas release had occurred on each date. Upon each occurrence, the high alarm cleared immediately and ventilation to the km414ary Building was resumed. Investigation revealed that on each occasion the icop seal on the waste evaporator had blevn. Because of the brevity of the incident, there were no measurable changes in the release concentration on either occasion.
Description of Occurrenca:
It was discovered on 4 August 1977 that radiation monitor EMA-Z went into high alarm on two occasions. The =1=rms occurred on 29 July and 2 August 1977. The Plant Review i
Committee determined that a probable unplanned radioactive gas release had occurred on each date. Upon each occurrence, the high alarm cleared immediately and ventilation to the km414ary Building was resumed. Investigation revealed that on each occasion the icop seal on the waste evaporator had blevn. Because of the brevity of the incident, there were no measurable changes in the release concentration on either occasion.
O Designation of Apparent Cause:
O Designation of Apparent Cause:
Blown loop seal of the waste evaporator causing a probable radioactive gas release to the Auxiliary Building.
Blown loop seal of the waste evaporator causing a probable radioactive gas release to the Auxiliary Building.
: 9. Analysis of Occurrence:
9.
Analysis of Occurrence:
The health and safety of the plant and public were not affected, as the releases were of such short durations that they could not be measured.
The health and safety of the plant and public were not affected, as the releases were of such short durations that they could not be measured.
: 10. Corrective Action:
10.
Corrective Action:
The vaste gas system is now being evaluated by Production and Plant Engineering, and corrective action will be implemented upon receipt of recommendations.
The vaste gas system is now being evaluated by Production and Plant Engineering, and corrective action will be implemented upon receipt of recommendations.
: 11. Failure Data:
11.
Failure Data:
This is the fifth occurrence of this event, as reported on LER's 77-49E, 77-61E, 77-73E, and 77-80E.
This is the fifth occurrence of this event, as reported on LER's 77-49E, 77-61E, 77-73E, and 77-80E.
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Latest revision as of 04:17, 2 January 2025

RO 77-93E:on 770729,probable Unplanned Radioactive Gas Release to Auxiliary Bldg Occurred.Caused by Blown Loop Seal on Waste Evaporator.Loop Seal re-established on Each Occurrence
ML19308D466
Person / Time
Site: Crystal River 
Issue date: 08/12/1977
From: Stewart W
FLORIDA POWER CORP.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19308D443 List:
References
NUDOCS 8002280777
Download: ML19308D466 (2)
v • d • e


Text

.

g UCENSEE EVENT REl-dHI CONTROL BLOCK:l l

l l

l l

l (PLEASE PAINT ALL REQUIRED INFC"T.1AT:C UCENSEE UCENSE EVENT NAME UCENst NUM8ER TYPt TYPE 01 l F l L l Cl R l P l 3 l l0l0l-l0l0l010l0l-l0l0l l 4 l 1 !1 l1 l1 l lo la l 7 89 14 15 25 26 30 31 32

"'E4' E'uE coexET NUMBER EVENT CATE REPoAT cATE c4Tecen

. @ CONT l "l -l lTl lLl l0 l5 l0 l-l013 l0 l2 l l nl vl,I o l r I, I l0 l8 !Il2l7l 7 8 57 38 59 60 61 68 SS 74 75 EVENT DESCRIPTION gg l In = ode 1 operati:n, it was determined on' 4 August 1977 by the PRC that on 29 fulv' ~

7

.8 9 g l and 2 August 1977, probable unplanned radioactive gas releases to the Auxiliary Building 7 89 gg l occurred contrary to E.T.S. 5.6.2.A.

Redundancy NA.

The fifth occurrence of this 7 89 Q l event. Due to the brevity of these releases there were no t easurabic chat ces % ^=

7 09

)

nE l continuous release concentrations.

(LER 77-93E) 7 89 pas

  • EE

$$s' teupoNENT cect VCLATCN a

lM l3 l lEl lZ l Zl Zl Zl ZI Zl l Zl l Z l9 l 9l 9l d

, ', J 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

/

le l These occurrences vere caused bv a bicvn loco seal on the waste evaoorator. Se loon 7 89

! seal was re-established on each occurrence.

_~-

s' l

s powen

'cTwen status "esSeaY

'/TE escovany cesemmcN (2l l1l0l0l l

' NA l

l Al l High radiation alarm on RMA-2e 1

7G 9

10 12 13 44 45 46 o7Ye'tEIsa l amount oF acDVITY LoCADcM CF REEASE INl Noe measurable l

l Auxiliary I Iil lGl I

w w--

7 8 9

10 11 44 45 PERSONNEL EXPOSURES NUMSER TYPE DESCRWT'CN 1 83 l0l0l0l d!

st s 7 89 11 12 13 PERSONNEL INJUAIES Nuu8am CEsemmcN 3 l0!Ol0l l

4A 7 89 11 12 OFFSITE CONSECUENCES 7 89 J

Q c JU LDSS OR DAMAGE TO FAC:UTY n'

O D

Typt esscarncN m

n vi i

/A1 L;J l

1 7 89 10 u-

.A u u Q PUSUCITY NA l

1 7 89 h6 O 2 ff g g ACCIT!CNAL FACTCRS

~

7 89 (IEj l SEE AT* ACHED SUPPLEMEITARY INFORMATION l

7 89 l

NAME.

J. P. Stewart PWCNE: 813/866-4150 cro nes...

SUPPLEMENTARY INFORMATION 1.

Report No.:

50-302/77-93E 2.

Fscility:

Crystal River Unit #3 3.

Report Date:

12 August 1977 4.

Occurrence Date:

29 July 1977 and 2 August 1977 (discovered 4 August 1977) 5.

Identification of occurrence:

Unplanned radioactive gaa release contrary to Environmental Technical Specification 5.6.2.A.

6.

Conditions Prior to Occurrenca:

Mode 1 power operation.

7.

Description of Occurrenca:

It was discovered on 4 August 1977 that radiation monitor EMA-Z went into high alarm on two occasions. The =1=rms occurred on 29 July and 2 August 1977. The Plant Review i

Committee determined that a probable unplanned radioactive gas release had occurred on each date. Upon each occurrence, the high alarm cleared immediately and ventilation to the km414ary Building was resumed. Investigation revealed that on each occasion the icop seal on the waste evaporator had blevn. Because of the brevity of the incident, there were no measurable changes in the release concentration on either occasion.

O Designation of Apparent Cause:

Blown loop seal of the waste evaporator causing a probable radioactive gas release to the Auxiliary Building.

9.

Analysis of Occurrence:

The health and safety of the plant and public were not affected, as the releases were of such short durations that they could not be measured.

10.

Corrective Action:

The vaste gas system is now being evaluated by Production and Plant Engineering, and corrective action will be implemented upon receipt of recommendations.

11.

Failure Data:

This is the fifth occurrence of this event, as reported on LER's77-49E, 77-61E,77-73E, and 77-80E.

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