ML19326B853: Difference between revisions
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{{#Wiki_filter:- _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - _ _ _ _ _ _ _ _ . | {{#Wiki_filter:- _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - _ _ _ _ _ _ _ _ . | ||
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('O 1- Reportabic Occurrence Report No. 50-313/76-25 | |||
('O | |||
1- Reportabic Occurrence Report No. 50-313/76-25 | |||
: 2. Report Date: 9/27/76 3. Occurrence Date: 8/31/76 4 Facility: Arkansa? Nuclear One-Unit 1 Rursellv11.a, Arkansas | : 2. Report Date: 9/27/76 3. Occurrence Date: 8/31/76 4 Facility: Arkansa? Nuclear One-Unit 1 Rursellv11.a, Arkansas | ||
: 5. Identification of Occurrence: . I Leak in "B" decay heat discharge line. | : 5. Identification of Occurrence: . I Leak in "B" decay heat discharge line. | ||
d | |||
: 6. Conditions Prior to Occurrence: | : 6. Conditions Prior to Occurrence: | ||
Steady-State Power Reactor Power 0 MWth llot Standby Not Output 0 MWe i | Steady-State Power Reactor Power 0 MWth llot Standby Not Output 0 MWe i | ||
Cold Shutdown X Percent of Full Power 0 *5 i | Cold Shutdown X Percent of Full Power 0 *5 i | ||
Refueling Shutdown Load Changes During Routine Power Operation i Routine Startup ' | Refueling Shutdown Load Changes During Routine Power Operation i Routine Startup ' | ||
: i. Operation | : i. Operation Routine Shutdown | ||
Routine Shutdown | |||
} Operation | } Operation | ||
] - Other (specify) | ] - Other (specify) | ||
: 7. Description of Occurrence: . | : 7. Description of Occurrence: . | ||
At 0420 hours on 8/31/76, an approximate 2 gpm leak was discovered in the heat affected zone of the boss to line weld for DH-1019. | At 0420 hours on 8/31/76, an approximate 2 gpm leak was discovered in the heat affected zone of the boss to line weld for DH-1019. | ||
The crack was in the 10" discharge line downstream of decay heat. | The crack was in the 10" discharge line downstream of decay heat. | ||
]l cooler E3SB. | ]l cooler E3SB. | ||
;j | ;j g 9 0418 a | ||
g 9 0418 | |||
a | |||
Attachuent "C" l !! arch 23,1976 NSP-10, Rev. 4 Page 2 of 4 1 | Attachuent "C" l !! arch 23,1976 NSP-10, Rev. 4 Page 2 of 4 1 | ||
I - ~ | I - ~ | ||
~ ,,,- | ~ ,,,- | ||
. . s | . . s s | ||
Reportable Occurrence Report No. 50-313/76-25 | |||
) | ) | ||
: 8. Designation of Apparent Cause ol' Occurrence: | : 8. Designation of Apparent Cause ol' Occurrence: | ||
) | ) | ||
Design Procedurc Manufacture Unusual Service Condition including Environmental Installation / | Design Procedurc Manufacture Unusual Service Condition including Environmental Installation / | ||
| Line 73: | Line 49: | ||
The probable cause of the crack was excessive vibration. | The probable cause of the crack was excessive vibration. | ||
b t | b t | ||
s 9. Analysis of Occurrence: | s 9. Analysis of Occurrence: | ||
The leak was confined to the Reactor Auxiliary Building; hence, there wa._no hazard to the health and safety of the public. | The leak was confined to the Reactor Auxiliary Building; hence, there wa._no hazard to the health and safety of the public. | ||
Attachment "C" March 23, 1976 NSP-10, Rev. 4 Page 3Of4 l | Attachment "C" March 23, 1976 NSP-10, Rev. 4 Page 3Of4 l | ||
I | I | ||
_, -- w | _, -- w | ||
,h - ~ ' | ,h - ~ ' | ||
m | m l l, . +- ' .. | ||
l l, . +- ' .. | |||
Reportable Occurrence Report iio. 50-313/70-25 - | Reportable Occurrence Report iio. 50-313/70-25 - | ||
: 10. Corrective Action: | : 10. Corrective Action: | ||
The repair was made by removing r. 2 ft. section of the schedule 10.p.iping and replacing with new section. | The repair was made by removing r. 2 ft. section of the schedule 10.p.iping and replacing with new section. | ||
!j - | !j - | ||
,i - | ,i - | ||
;.- | ;.- | ||
: 11. Failure Data: | : 11. Failure Data: | ||
Cracked welds reported in Reportable Occurrence Report 50-313/74-2, 76-10, and 76-24. Section of pipe had same heat number of 800201. | Cracked welds reported in Reportable Occurrence Report 50-313/74-2, 76-10, and 76-24. Section of pipe had same heat number of 800201. | ||
I I | |||
! I I | |||
I | ! l Attachment "C" March 23,1976 NSP-10, Rev. 4 Page 4 of 4 w- --,..py-qs,w ,y- - | ||
! I | |||
I | |||
! l Attachment "C" March 23,1976 NSP-10, Rev. 4 Page 4 of 4 | |||
w- --,..py-qs,w ,y- - | |||
, ,y y -y ,,, ,-, , -m, , | , ,y y -y ,,, ,-, , -m, , | ||
8 | 8 | ||
, . ,. ; . , , | , . ,. ; . , , | ||
UCENSEE EVENT REPORT | UCENSEE EVENT REPORT | ||
. CONmat 8tOCx:1 1 I I I l l casase paar au amoumao =PoemaTem ! | . CONmat 8tOCx:1 1 I I I l l casase paar au amoumao =PoemaTem ! | ||
1 8 I | 1 8 I | ||
| Line 135: | Line 79: | ||
CATEGORY TPE 00CxtT NUMBER EVENT CATE REPORT CATE 01 con T l l I W I I. I lo l sl ol-l ol 71 i l2 I I ci f l 11/ l 71 tl I ol4121717l(I 7 8 57 58 59 SO 81 68 89 74 75 80 EVENT OFSCRIPTION O l 0 % v lsu (olN s $ a d a us u , a - l P er l< war Ifeouev N Eu 4= l. a I , | CATEGORY TPE 00CxtT NUMBER EVENT CATE REPORT CATE 01 con T l l I W I I. I lo l sl ol-l ol 71 i l2 I I ci f l 11/ l 71 tl I ol4121717l(I 7 8 57 58 59 SO 81 68 89 74 75 80 EVENT OFSCRIPTION O l 0 % v lsu (olN s $ a d a us u , a - l P er l< war Ifeouev N Eu 4= l. a I , | ||
7 89 80 ' | 7 89 80 ' | ||
WI h er, w> a 09 e s+ ~2. es u o | WI h er, w> a 09 e s+ ~2. es u o ob + l | ||
ob + l | |||
* N e 12 1" O E m ** wnf I 7 89 80 . 11 04 I v un ue O A - (04 4. *w l $ a e oCCuvs+= rei vt MF e ** Y t $ i% 1 7 89 ' | * N e 12 1" O E m ** wnf I 7 89 80 . 11 04 I v un ue O A - (04 4. *w l $ a e oCCuvs+= rei vt MF e ** Y t $ i% 1 7 89 ' | ||
80 [ | 80 [ | ||
| Line 145: | Line 87: | ||
Oe I s e e_ v ,'e . | Oe I s e e_ v ,'e . | ||
7 89 el ' | 7 89 el ' | ||
lo o | lo o r e o f a e ,. | ||
r e o f a e ,. | |||
p,.lg | p,.lg | ||
. ( So In ht-2 r ) | . ( So In ht-2 r ) | ||
80 l , | 80 l , | ||
Y:E *Yo*E C | Y:E *Yo*E C | ||
CouPcNENT CooE E O vmATcN f E Icifl [FJ 7 89 10 11 Lp-l M al M a l a i 12 17 LA' 43 44 IPl414I91 47 lul 48 f 4 | CouPcNENT CooE E O vmATcN f E Icifl [FJ 7 89 10 11 Lp-l M al M a l a i 12 17 LA' 43 44 IPl414I91 47 lul 48 f 4 | ||
CAUSE DESCRPTION ! | CAUSE DESCRPTION ! | ||
@l 7 89 f% t. . U. e..c. u, a s e n e.cr;ve v A . .,:o w Two J. s 80 I | @l 7 89 f% t. . U. e..c. u, a s e n e.cr;ve v A . .,:o w Two J. s 80 I | ||
09 i seentou of ceted le to a :- :- | 09 i seentou of ceted le to a :- :- | ||
' ' ~' | ' ' ~' | ||
v e n tu el. | v e n tu el. | ||
P:s :-./ t, o d I 7 89 80 oC enn 1a r (m ! L ea - . t. . - I ST 4 POWER OTHER STATUS O COVERY CSCOVERY OESCRIPTICN 11 [GJ l olo lo i I NA I LkJ l A/4 I 7 8 9 10 12 13 44 45 46 80 A 0 0 AMOUNT OF ACTMTY LCCATION OF RELEASE I 12 7 8 9 W L2] LEASE l 10 11 NA l 44 l | P:s :-./ t, o d I 7 89 80 oC enn 1a r (m ! L ea - . t. . - I ST 4 POWER OTHER STATUS O COVERY CSCOVERY OESCRIPTICN 11 [GJ l olo lo i I NA I LkJ l A/4 I 7 8 9 10 12 13 44 45 46 80 A 0 0 AMOUNT OF ACTMTY LCCATION OF RELEASE I 12 7 8 9 W L2] LEASE l 10 11 NA l 44 l | ||
45 NA 80 l | 45 NA 80 l | ||
| Line 167: | Line 103: | ||
PERSONNEL INJURIES NUMBER CdSCRIPTION 14 1010101 I NA I 7 89 11 12 80 OFFSITE CONSEQUENCES ui NA I I | PERSONNEL INJURIES NUMBER CdSCRIPTION 14 1010101 I NA I 7 89 11 12 80 OFFSITE CONSEQUENCES ui NA I I | ||
! 7 89 80 | ! 7 89 80 | ||
( LOSS OR DAMAGE TO FAC:LITY | ( LOSS OR DAMAGE TO FAC:LITY TYPE CESCRIPTION I I I , | ||
7 89 10 80 PUBUCITY 17 I Md i 7 89 80 ADDITIONAL FACTCRS l ((N)I #A I l W89 , 80 l 19 I I NAue: O a s :<. { H \u;II;< ~ r PnCNg;% I)1 H-992 va ......,}} | |||
TYPE CESCRIPTION I I I , | |||
7 89 10 80 PUBUCITY 17 I Md i 7 89 80 ADDITIONAL FACTCRS l ((N)I #A I l W89 , 80 l 19 I I | |||
NAue: O a s :<. { H \u;II;< ~ r PnCNg;% I)1 H-992 va ......,}} | |||
Revision as of 23:32, 31 January 2020
| ML19326B853 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 09/27/1976 |
| From: | David Williams ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19326B844 | List: |
| References | |
| NUDOCS 8004180590 | |
| Download: ML19326B853 (4) | |
Text
- _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - _ _ _ _ _ _ _ _ .
m
('O 1- Reportabic Occurrence Report No. 50-313/76-25
- 2. Report Date: 9/27/76 3. Occurrence Date: 8/31/76 4 Facility: Arkansa? Nuclear One-Unit 1 Rursellv11.a, Arkansas
- 5. Identification of Occurrence: . I Leak in "B" decay heat discharge line.
d
- 6. Conditions Prior to Occurrence:
Steady-State Power Reactor Power 0 MWth llot Standby Not Output 0 MWe i
Cold Shutdown X Percent of Full Power 0 *5 i
Refueling Shutdown Load Changes During Routine Power Operation i Routine Startup '
- i. Operation Routine Shutdown
} Operation
] - Other (specify)
- 7. Description of Occurrence: .
At 0420 hours0.00486 days <br />0.117 hours <br />6.944444e-4 weeks <br />1.5981e-4 months <br /> on 8/31/76, an approximate 2 gpm leak was discovered in the heat affected zone of the boss to line weld for DH-1019.
The crack was in the 10" discharge line downstream of decay heat.
]l cooler E3SB.
- j g 9 0418 a
Attachuent "C" l !! arch 23,1976 NSP-10, Rev. 4 Page 2 of 4 1
I - ~
~ ,,,-
. . s s
Reportable Occurrence Report No. 50-313/76-25
)
- 8. Designation of Apparent Cause ol' Occurrence:
)
Design Procedurc Manufacture Unusual Service Condition including Environmental Installation /
Construction Component Failure -
Operator Other (specify) X <
The probable cause of the crack was excessive vibration.
b t
s 9. Analysis of Occurrence:
The leak was confined to the Reactor Auxiliary Building; hence, there wa._no hazard to the health and safety of the public.
Attachment "C" March 23, 1976 NSP-10, Rev. 4 Page 3Of4 l
I
_, -- w
,h - ~ '
m l l, . +- ' ..
Reportable Occurrence Report iio. 50-313/70-25 -
- 10. Corrective Action:
The repair was made by removing r. 2 ft. section of the schedule 10.p.iping and replacing with new section.
!j -
,i -
- .-
- 11. Failure Data:
Cracked welds reported in Reportable Occurrence Report 50-313/74-2, 76-10, and 76-24. Section of pipe had same heat number of 800201.
I I
! I I
! l Attachment "C" March 23,1976 NSP-10, Rev. 4 Page 4 of 4 w- --,..py-qs,w ,y- -
, ,y y -y ,,, ,-, , -m, ,
8
, . ,. ; . , ,
UCENSEE EVENT REPORT
. CONmat 8tOCx:1 1 I I I l l casase paar au amoumao =PoemaTem !
1 8 I
"*""l' uCENSE NUM8ER ' Tv'"J' ?v'n*' !
(]t u7 89l A l/ll Al AI MI10101-1010101 14 15 ll ol ol-l ol o l I vl / II l/ I tl 25 28 30 lol31 31 32 1
CATEGORY TPE 00CxtT NUMBER EVENT CATE REPORT CATE 01 con T l l I W I I. I lo l sl ol-l ol 71 i l2 I I ci f l 11/ l 71 tl I ol4121717l(I 7 8 57 58 59 SO 81 68 89 74 75 80 EVENT OFSCRIPTION O l 0 % v lsu (olN s $ a d a us u , a - l P er l< war Ifeouev N Eu 4= l. a I ,
7 89 80 '
WI h er, w> a 09 e s+ ~2. es u o ob + l
- N e 12 1" O E m ** wnf I 7 89 80 . 11 04 I v un ue O A - (04 4. *w l $ a e oCCuvs+= rei vt MF e ** Y t $ i% 1 7 89 '
80 [
O5 l ce - 1 o /r v-1 7 89
, to -in/7 c-i o a d re-) is/,z1v TL,, 4.,
80 I [
Oe I s e e_ v ,'e .
7 89 el '
lo o r e o f a e ,.
p,.lg
. ( So In ht-2 r )
80 l ,
Y:E *Yo*E C
CouPcNENT CooE E O vmATcN f E Icifl [FJ 7 89 10 11 Lp-l M al M a l a i 12 17 LA' 43 44 IPl414I91 47 lul 48 f 4
CAUSE DESCRPTION !
@l 7 89 f% t. . U. e..c. u, a s e n e.cr;ve v A . .,:o w Two J. s 80 I
09 i seentou of ceted le to a :- :-
' ' ~'
v e n tu el.
P:s :-./ t, o d I 7 89 80 oC enn 1a r (m ! L ea - . t. . - I ST 4 POWER OTHER STATUS O COVERY CSCOVERY OESCRIPTICN 11 [GJ l olo lo i I NA I LkJ l A/4 I 7 8 9 10 12 13 44 45 46 80 A 0 0 AMOUNT OF ACTMTY LCCATION OF RELEASE I 12 7 8 9 W L2] LEASE l 10 11 NA l 44 l
45 NA 80 l
PERSONNEL EXPOSURES NUM8ER TvPE DESCRtPTION 13 Iof clo I l el I #A I l 7 89 11 12 13 80 '
PERSONNEL INJURIES NUMBER CdSCRIPTION 14 1010101 I NA I 7 89 11 12 80 OFFSITE CONSEQUENCES ui NA I I
! 7 89 80
( LOSS OR DAMAGE TO FAC:LITY TYPE CESCRIPTION I I I ,
7 89 10 80 PUBUCITY 17 I Md i 7 89 80 ADDITIONAL FACTCRS l ((N)I #A I l W89 , 80 l 19 I I NAue: O a s :<. { H \u;II;< ~ r PnCNg;% I)1 H-992 va ......,