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(q & * ; %,,Y si.,,,.o ti. >io.eu | |||
(q & * ; %,,Y | . r***'' Vice Ivesident Generel Of fices: 1945 West Pernait Road, Jackson, Michsgen 49201 | ||
si.,,,.o ti. >io.eu | |||
. r***'' Vice Ivesident | |||
Generel Of fices: 1945 West Pernait Road, Jackson, Michsgen 49201 | |||
* Aree Code 617 708-0453 | * Aree Code 617 708-0453 | ||
- May 19, 1977 Howe-82-77 s | |||
- May 19, 1977 Howe-82-77 | Mr J G Keppler, Regional Director - | ||
s | |||
Office of Inspection and Inforcement US Nuclear Regulatory Commission | Office of Inspection and Inforcement US Nuclear Regulatory Commission | ||
. Region III l | . Region III l 799 Roosevelt Road | ||
799 Roosevelt Road | |||
' Glen Ellyn, IL 60137 ,. | ' Glen Ellyn, IL 60137 ,. | ||
i MIDIAND UUCLEAR FIAUT - UNIT NO 1 TENDON SHEATHING INTERIM REPORT - DOCKET No 50-329 i This letter is an interim report.in accordance with the requirements of 10 CFR 50.55(e) dealing with the location of tendon sheathing in the Midland Unit No 1 containment wall. | i MIDIAND UUCLEAR FIAUT - UNIT NO 1 TENDON SHEATHING INTERIM REPORT - DOCKET No 50-329 i This letter is an interim report.in accordance with the requirements of 10 CFR 50.55(e) dealing with the location of tendon sheathing in the Midland Unit No 1 containment wall. | ||
On April 19, 1977, a.noncenformance to design requirements was found involving four misplaced tenden 'shcathings to be installed at approximate elevation 700'-70!+' in the' Midland Unit No 1 contain=ent building. As is shown on the attached Bechtel Drawing No SK-C-537, four tendons (# H32-037, H13-037, H32-036, H13-036) were to be deflected. downward to clear the two main steam penetrations at center line clevation 707'-0". Contrary to this, and as is also shown on the attached Bechtel Drawing No SK-C-537, two tendon sheathings (H32-037 and H13-037) were not installed in the local area directly below the penetrations. | On April 19, 1977, a.noncenformance to design requirements was found involving four misplaced tenden 'shcathings to be installed at approximate elevation 700'-70!+' in the' Midland Unit No 1 contain=ent building. As is shown on the attached Bechtel Drawing No SK-C-537, four tendons (# H32-037, H13-037, H32-036, H13-036) were to be deflected. downward to clear the two main steam penetrations at center line clevation 707'-0". Contrary to this, and as is also shown on the attached Bechtel Drawing No SK-C-537, two tendon sheathings (H32-037 and H13-037) were not installed in the local area directly below the penetrations. | ||
Line 63: | Line 41: | ||
I Subsequent to discovery of this nonconformance, it had been decided to place tendon sheathing H13-037 below the main steam penetrations and to place tendon sheathing H32-037 above the main steam penetrations. This configuration is shown on the attached Bechtel Drawing No SK-C-538. The suppliers of the post-tensioning system have concurred with this decision. , | I Subsequent to discovery of this nonconformance, it had been decided to place tendon sheathing H13-037 below the main steam penetrations and to place tendon sheathing H32-037 above the main steam penetrations. This configuration is shown on the attached Bechtel Drawing No SK-C-538. The suppliers of the post-tensioning system have concurred with this decision. , | ||
However, as of this date, complete information on the effect of the above pro-posed action on the post-tensioning system, main steam penetration acccmblics, steel reinforcing bar, and concrete wall are not availabic. We expect to be able to provide this information in a future report, either interim or final, which will be sent on or before June 20, 1977. | However, as of this date, complete information on the effect of the above pro-posed action on the post-tensioning system, main steam penetration acccmblics, steel reinforcing bar, and concrete wall are not availabic. We expect to be able to provide this information in a future report, either interim or final, which will be sent on or before June 20, 1977. | ||
8006160 3 n-4 @ % ' | 8006160 3 n-4 @ % ' | ||
( | ( | ||
*CC: Dr Ernst Volgenau, U3Imc (15) | *CC: Dr Ernst Volgenau, U3Imc (15) | ||
Director, Office of Management . | Director, Office of Management . | ||
Information and Progran. Control, USNRC (1) as av o <(1077 | |||
Information and Progran. Control, USNRC (1) | |||
as av o <(1077 | |||
7 c | 7 c | ||
' P20 | ' P20 | ||
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5 <:r | |||
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-3 N OTE: ONL'1 ctlE FEts!ETRATlobl AFFecx evum | -3 N OTE: ONL'1 ctlE FEts!ETRATlobl AFFecx evum | ||
. z I6 GHov/N; OECND FENETRATICN | . z I6 GHov/N; OECND FENETRATICN t-- | ||
t-- | |||
19 AT AZIMUTH 77, RaJTINcu OF ASouT Q. | 19 AT AZIMUTH 77, RaJTINcu OF ASouT Q. | ||
3! - | 3! - | ||
'; H | '; H | ||
' TENDoris is AFFfox STMMETRICAL '' | ' TENDoris is AFFfox STMMETRICAL '' | ||
ASouT. AzlMUTH 90' o i to3* e if g ' | |||
i 2 s 5? s ! | |||
ASouT. AzlMUTH 90' o i | |||
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[- $ > | [- $ > | ||
y92.c;S EL 7m'.GF / N, IEL Til-5" | y92.c;S EL 7m'.GF / N, IEL Til-5" | ||
. - - . - d 5 Os "f 7N Hl3-036 | . - - . - d 5 Os "f 7N Hl3-036 | ||
-- l *5" | -- l *5" | ||
Line 132: | Line 76: | ||
bCl | bCl | ||
'd32-C37 EL 7cs'-G' El 707''0" FLACED TC -/ -f I p$ o Hi3_ C37 7' EL 7o 5'-G 8 EL. 703'-Y , | 'd32-C37 EL 7cs'-G' El 707''0" FLACED TC -/ -f I p$ o Hi3_ C37 7' EL 7o 5'-G 8 EL. 703'-Y , | ||
id 3 | id 3 6 | ||
i M32-03G m '703' G"._ _ | |||
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_EL 702. G' | _EL 702. G' j .- u. | ||
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$ 5dM | $ 5dM | ||
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' ORIG l NAL ALIGN MENT AROUND M AIN 6 TEAM OF TE.N DON s ! ,i | ' ORIG l NAL ALIGN MENT AROUND M AIN 6 TEAM OF TE.N DON s ! ,i | ||
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PENETRATION _ | PENETRATION _ | ||
N go | N go | ||
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NOT E :- 5 O.NL'f 1 'PE RETR ATIO N IS S40WW - APPRO'/.SYM4 g 2 4 SEcoND PENETR.ATIoN IS AT AZ.lMUTR Tf; . A%uT $% ., | NOT E :- 5 O.NL'f 1 'PE RETR ATIO N IS S40WW - APPRO'/.SYM4 g 2 4 SEcoND PENETR.ATIoN IS AT AZ.lMUTR Tf; . A%uT $% ., | ||
gg WO. . RO'JTING OF TENDONS is APPROX. 90 | gg WO. . RO'JTING OF TENDONS is APPROX. 90 | ||
. SYMMETRICAL. Ae>our ALIMuT4 clO' -i | . SYMMETRICAL. Ae>our ALIMuT4 clO' -i W ~ | ||
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EL 7oC- H VP P p2-ciS a,7e q '.g* L F G -o35 EL.7ea' vi | |||
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. d _ _" T~ ' | . d _ _" T~ ' | ||
G.El..10T c-i d' aeo o k n-en . Et . 703'.c, ' a | G.El..10T c-i d' aeo o k n-en . Et . 703'.c, ' a | ||
_. - rc - | _. - rc - | ||
ConcnETE. PLACED | ConcnETE. PLACED | ||
* H 32 c % ___ ' st., ro3'.s" T0JL 70S'-7".9 f L'7c4'-OYt E | * H 32 c % ___ ' st., ro3'.s" T0JL 70S'-7".9 f L'7c4'-OYt E | ||
p N je c ua | p N je c ua | ||
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E f L EL. ~lo?.'-6* o h | E f L EL. ~lo?.'-6* o h | ||
Line 267: | Line 144: | ||
b $ $9 $ | b $ $9 $ | ||
@6 Cf. | @6 Cf. | ||
p:3.c35 . $ @ | p:3.c35 . $ @ | ||
-- -- f __ __ _ | -- -- f __ __ _ | ||
g - | g - | ||
= zu w | = zu w | ||
{SMEATQlMG , | {SMEATQlMG , | ||
U c ., | U c ., | ||
' AS INSTALLED j te - | ' AS INSTALLED j te - | ||
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Qi RENISED AUGNMENT OF TENBONS , .Ey j | |||
: \ AROUND MAIM STEAM PENET RATION ps 2 i SHEET"2 <N O s | |||
: \ AROUND MAIM STEAM PENET RATION ps 2 | |||
i SHEET"2 <N O | |||
s | |||
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* 3Z1S V C49CC&-O-vY | * 3Z1S V C49CC&-O-vY | ||
. wd*Joq *yt,ot Japual ayt Aq uaA! Stuasuos uaupu Aue Aq patymJad asn ateApd pue Aem panweg ayt u! 3daoxa pasn Jo 'patignyxa 'pouco 'paedos 'pasnpoJdas}} | . wd*Joq *yt,ot Japual ayt Aq uaA! Stuasuos uaupu Aue Aq patymJad asn ateApd pue Aem panweg ayt u! 3daoxa pasn Jo 'patignyxa 'pouco 'paedos 'pasnpoJdas}} |
Latest revision as of 15:37, 18 February 2020
ML19329E610 | |
Person / Time | |
---|---|
Site: | Midland |
Issue date: | 05/19/1977 |
From: | Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
To: | |
Shared Package | |
ML19329E604 | List: |
References | |
HOWE-82-77, NUDOCS 8006160391 | |
Download: ML19329E610 (3) | |
Text
-
- \
J '
- p. ,,
i '
' v'i s
i !
. [g[h, '
C m !!,m 8tS g. t.
g
~
(q & * ; %,,Y si.,,,.o ti. >io.eu
. r*** Vice Ivesident Generel Of fices: 1945 West Pernait Road, Jackson, Michsgen 49201
- Aree Code 617 708-0453
- May 19, 1977 Howe-82-77 s
Mr J G Keppler, Regional Director -
Office of Inspection and Inforcement US Nuclear Regulatory Commission
. Region III l 799 Roosevelt Road
' Glen Ellyn, IL 60137 ,.
i MIDIAND UUCLEAR FIAUT - UNIT NO 1 TENDON SHEATHING INTERIM REPORT - DOCKET No 50-329 i This letter is an interim report.in accordance with the requirements of 10 CFR 50.55(e) dealing with the location of tendon sheathing in the Midland Unit No 1 containment wall.
On April 19, 1977, a.noncenformance to design requirements was found involving four misplaced tenden 'shcathings to be installed at approximate elevation 700'-70!+' in the' Midland Unit No 1 contain=ent building. As is shown on the attached Bechtel Drawing No SK-C-537, four tendons (# H32-037, H13-037, H32-036, H13-036) were to be deflected. downward to clear the two main steam penetrations at center line clevation 707'-0". Contrary to this, and as is also shown on the attached Bechtel Drawing No SK-C-537, two tendon sheathings (H32-037 and H13-037) were not installed in the local area directly below the penetrations.
Concrete had been poured to a construction joint at elevation 703'-7" approxi-mately one week before this nonconfor=ance was found by the survey team during preparations for the next wall lift.
I Subsequent to discovery of this nonconformance, it had been decided to place tendon sheathing H13-037 below the main steam penetrations and to place tendon sheathing H32-037 above the main steam penetrations. This configuration is shown on the attached Bechtel Drawing No SK-C-538. The suppliers of the post-tensioning system have concurred with this decision. ,
However, as of this date, complete information on the effect of the above pro-posed action on the post-tensioning system, main steam penetration acccmblics, steel reinforcing bar, and concrete wall are not availabic. We expect to be able to provide this information in a future report, either interim or final, which will be sent on or before June 20, 1977.
8006160 3 n-4 @ % '
(
- CC: Dr Ernst Volgenau, U3Imc (15)
Director, Office of Management .
Information and Progran. Control, USNRC (1) as av o <(1077
7 c
' P20
- W .
2 5 <:r
~
-3 N OTE: ONL'1 ctlE FEts!ETRATlobl AFFecx evum
. z I6 GHov/N; OECND FENETRATICN t--
19 AT AZIMUTH 77, RaJTINcu OF ASouT Q.
3! -
'; H
' TENDoris is AFFfox STMMETRICAL
ASouT. AzlMUTH 90' o i to3* e if g '
i 2 s 5? s !
to s
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.7 'E~ i)*
.. M v3: y o y) l r, "
[- $ >
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C'CMCRETE '
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'd32-C37 EL 7cs'-G' El 7070" FLACED TC -/ -f I p$ o Hi3_ C37 7' EL 7o 5'-G 8 EL. 703'-Y ,
id 3 6
i M32-03G m '703' G"._ _
_ __s ~
ff, ELE L7o3'-8"'/ 0 2 '- 7'I Nor INGTALL ED G
I dM til O' H -f 5 G !
O 2 5Q f
_EL 702. G' j .- u.
p i 3 g , 3 F r
x s -
m a$z E s s
-- EL 701'- "/ F__
l g ELidl'38 -- li-E
$ 5dM
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~ GHEATHING As INSTALLED .
es f.&-
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' ORIG l NAL ALIGN MENT AROUND M AIN 6 TEAM OF TE.N DON s ! ,i
~
N go
' 3 J
TSHEET"1 qq, j!
32:s -v.,
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- m. ~.~ *- -- -
NOT E :- 5 O.NL'f 1 'PE RETR ATIO N IS S40WW - APPRO'/.SYM4 g 2 4 SEcoND PENETR.ATIoN IS AT AZ.lMUTR Tf; . A%uT $% .,
gg WO. . RO'JTING OF TENDONS is APPROX. 90
. SYMMETRICAL. Ae>our ALIMuT4 clO' -i W ~
C.
. O z OJ E
' 4 2?
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% 35 $ j c
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- - REROUTED
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G.El..10T c-i d' aeo o k n-en . Et . 703'.c, ' a
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ConcnETE. PLACED
- H 32 c % ___ ' st., ro3'.s" T0JL 70S'-7".9 f L'7c4'-OYt E
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. wd*Joq *yt,ot Japual ayt Aq uaA! Stuasuos uaupu Aue Aq patymJad asn ateApd pue Aem panweg ayt u! 3daoxa pasn Jo 'patignyxa 'pouco 'paedos 'pasnpoJdas