ML19254E329: Difference between revisions
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=Text= | =Text= | ||
{{#Wiki_filter:. | {{#Wiki_filter:. | ||
ELCD CCCTrr; ; :. . , - | ELCD CCCTrr; ; :. . , - | ||
W.S Consumers | W.S Consumers | ||
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ocerta s*a | ocerta s*a | ||
[(j ysnac Mr J G Keppler, Regional Directer f- . | [(j ysnac Mr J G Keppler, Regional Directer f- . | ||
Office of Inspecticn and Inforce=ent gy | Office of Inspecticn and Inforce=ent gy g 913[3 I> , | ||
g 913[3 I> , | |||
4 | 4 | ||
. a-- ,~ | . a-- ,~ | ||
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Attach =ent (1) is Censumers ?cuer Cc=pany's statement cf the status of activitd.es asscciated with the spc01s ubich was derived frc= the referenced letter and frc= the additional basic data given in 3echtel's MCAR Interi: | Attach =ent (1) is Censumers ?cuer Cc=pany's statement cf the status of activitd.es asscciated with the spc01s ubich was derived frc= the referenced letter and frc= the additional basic data given in 3echtel's MCAR Interi: | ||
Report, provided as Attach =ent (2)~. | Report, provided as Attach =ent (2)~. | ||
Another reperc, either interi= cr final, vill be previded by Septe=ber 7, 1979 | Another reperc, either interi= cr final, vill be previded by Septe=ber 7, 1979 ge nq Attachments: (1) Censumers ecver Cc pany's State:ent cf the Status cf Acticn As scciat'.d 'a'ith -"J2-G d -- =' ' Supplied Main Feedvater Pipe Spcols (2) MCAR-29, Interi: Repcrt :Io 2, dated July 26, 1979 T ' ~ a-a - | ||
CC: Director of Cffice of nsrecticn 'c Att: Mr Victor Stelic, US:iRC (15) 3, q'4 2h7 Director, Cffice of Menage =ent Infomation and Prcgre: Centrcl, USIIRC (1) | |||
ge nq | |||
Attachments: (1) Censumers ecver Cc pany's State:ent cf the Status cf Acticn As scciat'.d 'a'ith -"J2-G d -- =' ' Supplied Main Feedvater Pipe Spcols (2) MCAR-29, Interi: Repcrt :Io 2, dated July 26, 1979 T ' ~ a-a - | |||
CC: Director of Cffice of nsrecticn 'c Att: Mr Victor Stelic, US:iRC (15) 3, | |||
q'4 2h7 Director, Cffice of Menage =ent Infomation and Prcgre: Centrcl, USIIRC (1) | |||
~ s 7910310 M 5 | ~ s 7910310 M 5 | ||
Attachevi.t to !;LC- 77/.2 Appendix | Attachevi.t to !;LC- 77/.2 Appendix | ||
. ',' Page 3 of 3 . | . ',' Page 3 of 3 . | ||
*'. !!CAlt 2') 1 Tir.r.lY IEPORT 2 . | *'. !!CAlt 2') 1 Tir.r.lY IEPORT 2 . | ||
July 26, 1979 Page 6 Code Acceptance Critetia for Charpy I= pact Results in Accordance with ASMF. Code, Section III,1971 Edition Through fiu==ce 1973 Addenda | |||
Code Acceptance Critetia for Charpy I= pact Results in Accordance with ASMF. Code, Section III,1971 Edition Through fiu==ce 1973 Addenda | |||
: 1) Acceptance tests consist cf a set of three full-site spec 1= ens. | : 1) Acceptance tests consist cf a set of three full-site spec 1= ens. | ||
: 2) Speci= ens shall have a =i21=== of 25 =il lateral expansion. | : 2) Speci= ens shall have a =i21=== of 25 =il lateral expansion. | ||
Line 68: | Line 52: | ||
One retest permitted at the same te=perature provided: | One retest permitted at the same te=perature provided: | ||
a) Average values of the test results =eet the =ini=== require =ents b) Not more than one speci=en per test is belcw the =i=i=u= require- | a) Average values of the test results =eet the =ini=== require =ents b) Not more than one speci=en per test is belcw the =i=i=u= require- | ||
=ent c) Speci=en not =eeting the =ini=== require =ents is not lower than 10 f t/lbs or 5 d's lateral below specified require =ent | =ent c) Speci=en not =eeting the =ini=== require =ents is not lower than 10 f t/lbs or 5 d's lateral below specified require =ent d) A retest consists of two additio=al speci= ens take: as close as practical to the f ailed speci= ens. For acceptance of the retest, both speci= ens shall =eet the minicus require =ents. | ||
e 7/12/9 | |||
d) A retest consists of two additio=al speci= ens take: as close as practical to the f ailed speci= ens. For acceptance of the | |||
retest, both speci= ens shall =eet the minicus require =ents | |||
e | |||
7/12/9 | |||
' Appendix | |||
* Page 2 of 3 C.5depy Tes: Results Heat L-20479 . | |||
' Appendix | . Spools Register . CKTR Heat-Trea:edl lELB15638134 MP44 . P142 Yes lEL315638136 MP46 P142 Yes 2EL315639135 MR418 P142 Yes 2ELR2S639135 MR426 P142 Yes 2ELBS639136 MR427 P142 Yes Test RestL:s +30F As-Received Condition Stress-Relieved 11757 1s: 2nd 1st Tes: | ||
Page 2 of 3 | |||
C.5depy Tes: Results | |||
Heat L-20479 . | |||
. Spools Register . CKTR Heat-Trea:edl | |||
lELB15638134 MP44 . P142 Yes lEL315638136 MP46 P142 Yes 2EL315639135 MR418 P142 Yes | |||
2ELR2S639135 MR426 P142 Yes 2ELBS639136 MR427 P142 Yes | |||
Test RestL:s +30F | |||
As-Received Condition Stress-Relieved 11757 | |||
1s: 2nd 1st Tes: | |||
~ | ~ | ||
32 31 30 | 32 31 30 14 43 29 13 23 29 Passed .No No , | ||
14 43 29 13 23 29 Passed .No No , | |||
' Yeu | ' Yeu | ||
: 1. Ecat treat =ent verification was based on review of actual documen-tation at the j'chsico. Hea: treatment censisted of pos: weld stress ,rslieving. | : 1. Ecat treat =ent verification was based on review of actual documen-tation at the j'chsico. Hea: treatment censisted of pos: weld stress ,rslieving. | ||
In accordance with code regula: ions material, this heat is considered acceptable in the : ress-relieved condition. Ecwever, cecause of incen-sistent results wit' other hea:s af ter s:ress-relievin3, Grinnell considers | In accordance with code regula: ions material, this heat is considered acceptable in the : ress-relieved condition. Ecwever, cecause of incen-sistent results wit' other hea:s af ter s:ress-relievin3, Grinnell considers these resul:s ques:icnable. Disposicion of this =a:erial is considered undete rined at :his ti=e. | ||
Spools Consisting cf a Cc=binacien of Heats N-32762 and L-20479 Secols Racister CMTR Hea:-Trea:ed IIL315633133 M?43 P142 Yes lEL325638133 M?412 P142 Yes lEL32S638136 MP414 ?142 Yes 3ecause these spools are combinations of unacceptable hes:s , they are no: | |||
these resul:s ques:icnable. Disposicion of this =a:erial is considered undete rined at :his ti=e. | |||
Spools Consisting cf a Cc=binacien of Heats N-32762 and L-20479 | |||
Secols Racister CMTR Hea:-Trea:ed | |||
IIL315633133 M?43 P142 Yes lEL325638133 M?412 P142 Yes lEL32S638136 MP414 ?142 Yes | |||
3ecause these spools are combinations of unacceptable hes:s , they are no: | |||
acceptable. | acceptable. | ||
, n ' 4 2, b h | , n ' 4 2, b h | ||
. 7/12/9 | . 7/12/9 | ||
Page 1 of 3 | Page 1 of 3 | ||
'APPCDIX - | 'APPCDIX - | ||
SU!C".ARY OF FI"D DOC'E;TATICN SURVrf FOR HF.CS N-32762 A:C L-20479 Charpy Tes: Resul:s | SU!C".ARY OF FI"D DOC'E;TATICN SURVrf FOR HF.CS N-32762 A:C L-20479 Charpy Tes: Resul:s | ||
- Heat N-32762 | - Heat N-32762 Socols Register CMTR Hea -Trasted-9 | ||
. Fa' 1EL325633134 MP412 P142 2EL315639133 MR416 P142 Yes 2EL315639133A MR416AX P142 Yes 2EL32S639133 !IR424 P142 Yes . | |||
Socols Register CMTR Hea -Trasted- | 2EL325639134 HR425 P142 Yes Tes: Resul: @ '30F ' | ||
9 | |||
. Fa' | |||
1EL325633134 MP412 P142 2EL315639133 MR416 P142 Yes 2EL315639133A MR416AX P142 Yes 2EL32S639133 !IR424 P142 Yes . | |||
2EL325639134 HR425 P142 Yes | |||
Tes: Resul: @ '30F ' | |||
As-Received Condition | As-Received Condition | ||
~ 1s t ?nd | ~ 1s t ?nd 3rd 21 :25 29 40 18 30 45 32 Passed No 'No Yes | ||
3rd 21 :25 29 40 18 30 45 32 Passed No 'No Yes | |||
: 1. Heat trea::ent verifica:icn was based en revieu of a::tal documen-tation at the j obst:e. Heac trea::en: censisted of pos: 'eeld s:ress-relieving. | : 1. Heat trea::ent verifica:icn was based en revieu of a::tal documen-tation at the j obst:e. Heac trea::en: censisted of pos: 'eeld s:ress-relieving. | ||
: 2. This spool is currently on hold at Grinnell Shop. | : 2. This spool is currently on hold at Grinnell Shop. | ||
Because :he third :es: a: 3CF is cons'da-ad ' valid, d'spesition of na:crial is undeternined a: :his :ine. (See Code Acceptance Cri: aria for Charpy I= pac: Tes: Resul:s.) | Because :he third :es: a: 3CF is cons'da-ad ' valid, d'spesition of na:crial is undeternined a: :his :ine. (See Code Acceptance Cri: aria for Charpy I= pac: Tes: Resul:s.) | ||
e i | e i | ||
.v 4 ,79 | .v 4 ,79 | ||
Bechtel Associates ProfessionalCorporation Attachment to 3LC-7942 MCAR 29 Interim Report 2 July 26, 1979 Page 3 Forecast Data for Investiestien and Cerrective Action The next interim report is scheduled for August 23, 1979. | |||
Bechtel Associates ProfessionalCorporation | |||
Attachment to 3LC-7942 MCAR 29 Interim Report 2 July 26, 1979 Page 3 Forecast Data for Investiestien and Cerrective Action The next interim report is scheduled for August 23, 1979. | |||
) - | ) - | ||
Submitted by: b e ' | Submitted by: b e ' | ||
Approved by:, O /> " | Approved by:, O /> " | ||
Concurrence by: ) | Concurrence by: ) | ||
/ | / | ||
FMM/js 7/12/9 _ | FMM/js 7/12/9 _ | ||
4 271 | 4 271 | ||
~ | ~ | ||
Bechtel Associates ProfessionalCorporation | Bechtel Associates ProfessionalCorporation Attach =ent to BLC-7942 MCAR 29 Interi= Report 2 July 26, 1979 Page 2 Grinnell concedes that i:s rationale, as de=onstraced by the resul:s of Heat N-32762 is not 100% consistent, and as a result, it believes that other stress-relieved heats =ay also be suspec: in rela;'on to the repeatability of the i= pact properties en each piece of equ p-ment. | ||
Attach =ent to BLC-7942 MCAR 29 Interi= Report 2 July 26, 1979 Page 2 | |||
Grinnell concedes that i:s rationale, as de=onstraced by the resul:s of Heat N-32762 is not 100% consistent, and as a result, it believes that other stress-relieved heats =ay also be suspec: in rela;'on to the repeatability of the i= pact properties en each piece of equ p-ment. | |||
Grinnell has rationali:ed that because it did not ob:ain i= proved Charpy test resul:s for Heat N-32762 s:ress-relieving, Hea: L-20479 cannot be considered to have the desired i= pact properties (+307) . | Grinnell has rationali:ed that because it did not ob:ain i= proved Charpy test resul:s for Heat N-32762 s:ress-relieving, Hea: L-20479 cannot be considered to have the desired i= pact properties (+307) . | ||
: 2) In May 1979, Grinnell tested 'three sa=p7es of Heat N-32762. These sa=ples vere frc= a fabricated spool whi.ch censisted of a sersigh: | : 2) In May 1979, Grinnell tested 'three sa=p7es of Heat N-32762. These sa=ples vere frc= a fabricated spool whi.ch censisted of a sersigh: | ||
piece of pipe which was hot-bent, air-cooled, and : hen full furnace stress-relieved. These sa=ples yielded resul:s of 9, 6, and 17 =11 lateral expansion. Because :he sa=ples were taken near the area of the bend, it was thought tha: they =ay have been frc= a heat-affected :ene (an area which had received an La:er=ediate heating and cooling cycle because of its proy d:y to the hac bend area). | piece of pipe which was hot-bent, air-cooled, and : hen full furnace stress-relieved. These sa=ples yielded resul:s of 9, 6, and 17 =11 lateral expansion. Because :he sa=ples were taken near the area of the bend, it was thought tha: they =ay have been frc= a heat-affected :ene (an area which had received an La:er=ediate heating and cooling cycle because of its proy d:y to the hac bend area). | ||
d | d | ||
Line 233: | Line 103: | ||
: 3) Bech el has perfor=ed a docu=enta:icn survey a: the jobsi:e to identify all spools Charpy tes: cualified in hea: trea:=ent cendi:icn and to ccnfir= tha: those spools iden:ified were in f ac: hea:- | : 3) Bech el has perfor=ed a docu=enta:icn survey a: the jobsi:e to identify all spools Charpy tes: cualified in hea: trea:=ent cendi:icn and to ccnfir= tha: those spools iden:ified were in f ac: hea:- | ||
trea:ed. The resul:s cf this survey, as rela:ed :o Heats N-32762 and L-2047;, are abula:ed in the at ached appendix. | trea:ed. The resul:s cf this survey, as rela:ed :o Heats N-32762 and L-2047;, are abula:ed in the at ached appendix. | ||
Bechtel is still pursuin; the accep;abill:7 of naterial associated with Hea:s N-32762 and 1-20479 as well as any spools wi:h ho: bend sections. Theref ore, :he repor:able condi:icn of the pipe re=ains | Bechtel is still pursuin; the accep;abill:7 of naterial associated with Hea:s N-32762 and 1-20479 as well as any spools wi:h ho: bend sections. Theref ore, :he repor:able condi:icn of the pipe re=ains uncertain a: this :1=c. , | ||
uncertain a: this :1=c. , | |||
r / | r / | ||
) | ) | ||
]![ ~, | ]![ ~, | ||
[( - , .. .,/ | [( - , .. .,/ | ||
+ | + | ||
i, Attach =ent 2 | |||
Attach =ent 2 | |||
- Hove-215-79 Bechtel Associates Professional Corporation Attachnen to 3LC-7942 . | - Hove-215-79 Bechtel Associates Professional Corporation Attachnen to 3LC-7942 . | ||
==SUBJECT:== | ==SUBJECT:== | ||
Line 260: | Line 121: | ||
Grinnell was reques:ed to furnish 1:s rationale for accep:ance of the i= pac: :es resul:s en Hea: L-20479 in :he s:ress-relieved condition. Grinnell's rationale was based en 1:s e:gerience tha: | Grinnell was reques:ed to furnish 1:s rationale for accep:ance of the i= pac: :es resul:s en Hea: L-20479 in :he s:ress-relieved condition. Grinnell's rationale was based en 1:s e:gerience tha: | ||
a suberitical (1100-1200F) hea: :: cat =en: has :he effec: cf reducing the spread of :cughness values (s= aller variances) and sligh:17 i= proving la:aral expansien values :hrough a sof:ening =cchanis= (a slightly reduced yicid pein:). The re:es: of Hea: L-20479, a::c: | a suberitical (1100-1200F) hea: :: cat =en: has :he effec: cf reducing the spread of :cughness values (s= aller variances) and sligh:17 i= proving la:aral expansien values :hrough a sof:ening =cchanis= (a slightly reduced yicid pein:). The re:es: of Hea: L-20479, a::c: | ||
stress- clieving, =c: the code i= pac: test requirc=en:s. Ecwever, t9 / 977 | stress- clieving, =c: the code i= pac: test requirc=en:s. Ecwever, t9 / 977 4 L/J | ||
4 L/J | |||
Attach =ent 1 | Attach =ent 1 Fase 3 neve-c., e, ~e ~y | ||
: k. A= investigatien is being =ade to identi.^f piping speels, fr = | : k. A= investigatien is being =ade to identi.^f piping speels, fr = | ||
heats other than "-32762 and L-2%79, which were het ben; and stress-relieved. | heats other than "-32762 and L-2%79, which were het ben; and stress-relieved. | ||
This attach =ent a*te= pts to present the rav data presen'.17 available and is not =eant to offe - any conclusiens at this ti=e. | This attach =ent a*te= pts to present the rav data presen'.17 available and is not =eant to offe - any conclusiens at this ti=e. | ||
O 4 274 0 | |||
O | |||
4 274 | |||
0 | |||
$,E 4 | $,E 4 | ||
( r | ( r | ||
; t s a | ; t s a | ||
. Attach =ent 1 Page 2 yove.<, | . Attach =ent 1 Page 2 yove.<, | ||
.. -; ir 5 One spool of =sterial fre= this heat later required het bending and was subsequently stress-relieved. Charpy-inpact speci= ens obtained frt: this s;cci were 6, 9, and 17 ils lateral expansien, which is unac.M':able. | .. -; ir 5 One spool of =sterial fre= this heat later required het bending and was subsequently stress-relieved. Charpy-inpact speci= ens obtained frt: this s;cci were 6, 9, and 17 ils lateral expansien, which is unac.M':able. | ||
Line 289: | Line 139: | ||
~ | ~ | ||
perfor=ed a s cend Charpy inpact test (with three speci= ens si=ilar to an initial tes: versus tvc speci= ens required in a retest). ~he results of the second set of tests were 23, 31 and h3 =ils lateral expansien a.id this test was also unacceptable. | perfor=ed a s cend Charpy inpact test (with three speci= ens si=ilar to an initial tes: versus tvc speci= ens required in a retest). ~he results of the second set of tests were 23, 31 and h3 =ils lateral expansien a.id this test was also unacceptable. | ||
3 This heat was subsequently stress-relieve:i to i=preve fracture properties of the as-relled =aterial and retested with a new set of three Charpy i= pact speci= ens. S e test results after stress-relieving vere 29, 29 and 30 mils lateral expansion. '"hese test results vere abcve the =ini=u require =ent and the heat was then | 3 This heat was subsequently stress-relieve:i to i=preve fracture properties of the as-relled =aterial and retested with a new set of three Charpy i= pact speci= ens. S e test results after stress-relieving vere 29, 29 and 30 mils lateral expansion. '"hese test results vere abcve the =ini=u require =ent and the heat was then considered acceptable in the stress-relieve:i condition. | ||
considered acceptable in the stress-relieve:i condition. | |||
: h. The results of the post stress relief tests describe:i in A.5 indicates that stress-relieving : ices ct always i=preve the Charpy i=;act results. Because of this, IT Grinnell no lenger believes that =aterial stress-relieved and tested ;er 3.3 can be considered acceptable. | : h. The results of the post stress relief tests describe:i in A.5 indicates that stress-relieving : ices ct always i=preve the Charpy i=;act results. Because of this, IT Grinnell no lenger believes that =aterial stress-relieved and tested ;er 3.3 can be considered acceptable. | ||
C. Other pire Srecis With E 3ent Secti:ns Because of the unacceptable results obtained frc= het bent and stress-relieved speel described in A.5, the acceptability Of all other specis which were het bent an:1 stress-relieved is being investigated. | C. Other pire Srecis With E 3ent Secti:ns Because of the unacceptable results obtained frc= het bent and stress-relieved speel described in A.5, the acceptability Of all other specis which were het bent an:1 stress-relieved is being investigated. | ||
D. Status of 'dentificatier of "sterial Under I-vestin-icn | D. Status of 'dentificatier of "sterial Under I-vestin-icn | ||
Line 304: | Line 151: | ||
-.....,.-~c~~.....~.=..'1' | -.....,.-~c~~.....~.=..'1' | ||
. . '-~.'.c"...'~.".. | . . '-~.'.c"...'~.".. | ||
N-32762 r.d 1-2CL79 have been identified. | N-32762 r.d 1-2CL79 have been identified. | ||
. 7lG | . 7lG | ||
: t. s 900RORGH | : t. s 900RORGH | ||
a..a | a..a | ||
. ._. w.e .. . | . ._. w.e .. . | ||
3 Page 1 Eeve. 215-79 | 3 Page 1 Eeve. 215-79 C"w.".SU.'r_-'.S _ 'tr,*aER C',',''". | ||
C"w.".SU.'r_-'.S _ 'tr,*aER C',',''". | |||
. .. A".4. ' S .~s a' ". V_"'~. .' . | . .. A".4. ' S .~s a' ". V_"'~. .' . | ||
OF "'EE S**A"'US OF AC"' 0N ASSOCIA"."fD VI~H ITT-GRI'UElL SUPPL:ID MAIN FIENA"'IR FI?E SPCOLS The purpcse of this attachment is to provide a s==ary of the sequence of events that are associated with each of the heats of piping.specis. '"his data is taken frc= Attach =ent No 2 and Censu=ers Fever Cc=pany's pre.'iously referenced letter. | OF "'EE S**A"'US OF AC"' 0N ASSOCIA"."fD VI~H ITT-GRI'UElL SUPPL:ID MAIN FIENA"'IR FI?E SPCOLS The purpcse of this attachment is to provide a s==ary of the sequence of events that are associated with each of the heats of piping.specis. '"his data is taken frc= Attach =ent No 2 and Censu=ers Fever Cc=pany's pre.'iously referenced letter. | ||
Line 325: | Line 163: | ||
: 1. One set of ''- py i= pact speci= ens were taken, but vere .:: | : 1. One set of ''- py i= pact speci= ens were taken, but vere .:: | ||
valid because they were obtained "rc= an incerrect 10 cati:n. | valid because they were obtained "rc= an incerrect 10 cati:n. | ||
: 2. The "irst set of valid test specimens vere cbtained. For the material under censideratien, the ASMI acceptance criteria required three full-sized speci= ens be tested and that each speci=en have a =ini=u= test result of.25 =ils lateral expansien. | : 2. The "irst set of valid test specimens vere cbtained. For the material under censideratien, the ASMI acceptance criteria required three full-sized speci= ens be tested and that each speci=en have a =ini=u= test result of.25 =ils lateral expansien. | ||
"'he test results ver; 21, h0 and h5 " s lateral expansien (a*. the required +20*? te=perature) and the test was unacceptable. | "'he test results ver; 21, h0 and h5 " s lateral expansien (a*. the required +20*? te=perature) and the test was unacceptable. | ||
3 The ASMI Code all:vs ene retest at the sa=e test te=peratu:e | 3 The ASMI Code all:vs ene retest at the sa=e test te=peratu:e | ||
*o.ke | *o.ke | ||
. ,e""a._a_d, | . ,e""a._a_d, | ||
... * '..* ''.e 4 ..' * .* al | ... * '..* ''.e 4 ..' * .* al | ||
* e s*. . e s1.'.' *. s - a. *.' * .* ' . ' .#c.' _' ovd | * e s*. . e s1.'.' *. s - a. *.' * .* ' . ' .#c.' _' ovd cri*eria: | ||
cri*eria: | |||
: a. the average result of all three initial test sr.ecimens =eets | : a. the average result of all three initial test sr.ecimens =eets | ||
.w. e 4:4 . | .w. e 4:4 . | ||
..4....,. | ..4....,. | ||
. 1 ...-. . | . 1 ...-. . | ||
Line 347: | Line 180: | ||
+w. | +w. | ||
.. -o y t ,, .4 .r e . | .. -o y t ,, .4 .r e . | ||
1 4.,.. ..... | |||
1 | |||
4.,.. ..... | |||
*l,gs eA so n ~.%.e ,.e .e..' | *l,gs eA so n ~.%.e ,.e .e..' | ||
.a o. ... | .a o. ... | ||
.t4., | .t4., | ||
%... ... .. ~ . . p. . ...f. , . . n* . * '/ cm.. .. ...... ..,., | %... ... .. ~ . . p. . ...f. , . . n* . * '/ cm.. .. ...... ..,., | ||
,,^ t c .eg g .t s...t ..., no | ,,^ t c .eg g .t s...t ..., no | ||
. .. ...o gy.A.s.t.. . . . ~ 1 s. en. y _s. ._ a. .. a.>.... . . a a. . e g.e gg en. | . .. ...o gy.A.s.t.. . . . ~ 1 s. en. y _s. ._ a. .. a.>.... . . a a. . e g.e gg en. | ||
: 7. e s .%. .' .. | : 7. e s .%. .' .. | ||
.. o . k.... e. g.47 ..A. .e . ..o. _ ..4 - . . , ... .a.s al.' C*.**.d . ' . " * .* .e ' a ^ e.. *y*. a wh .'a. , '.C*.*. . -. | .. o . k.... e. g.47 ..A. .e . ..o. _ ..4 - . . , ... .a.s al.' C*.**.d . ' . " * .* .e ' a ^ e.. *y*. a wh .'a. , '.C*.*. . -. | ||
.. h.. g gg.4 .J..+ .4 | .. h.. g gg.4 .J..+ .4 | ||
Line 373: | Line 198: | ||
. . . . . . . . . ..a.~ | . . . . . . . . . ..a.~ | ||
...s. . | ...s. . | ||
a,.. e y.. ak 9 . . | a,.. e y.. ak 9 . . | ||
: h. e ou1, g e n . .n... | : h. e ou1, g e n . .n... | ||
g . . .. | g . . .. | ||
Line 382: | Line 204: | ||
. .. . . . s., a. | . .. . . . s., a. | ||
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Latest revision as of 01:06, 2 February 2020
ML19254E329 | |
Person / Time | |
---|---|
Site: | Midland |
Issue date: | 08/01/1979 |
From: | Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
Shared Package | |
ML19254E324 | List: |
References | |
HOWE-215-79, NUDOCS 7910310455 | |
Download: ML19254E329 (5) | |
Text
.
ELCD CCCTrr; ; :. . , -
W.S Consumers
- 1.jj,h POWBr 5-""-"
.- /2Company Sensar %ce r%essiens V
Generel cffices: 1945 West Pernell Road, Jackson, Michegan 49201 e (5171785-0453 August 1, 1979 Hove-215-79 a \\ i %
v s
ocerta s*a
[(j ysnac Mr J G Keppler, Regional Directer f- .
Office of Inspecticn and Inforce=ent gy g 913[3 I> ,
4
. a-- ,~
.~.oe,- -
US liuclear Regulatory Cc==1ssion e.*.f,3
,m- C ,
6 -
799 Reesevelt Reed Glen Ellyn, IL 60137 4 y N
MIDLAIiD TUCLEAR PLA:iT UITIT !!O 1, ICCEIT :0 50-329 U: LIT IiO 2, DCCKE2 !l0 50-330 IMPACT TESTED - IT:' GRECM SU?? LIED MAI'i FIED ?I?E _
neference: S H Howell letter to J G Keppler; Midland fiueleer Plant; Qnit !!o 1, Decket :To 50-329; Unit ::c 2, Oceke :To 50-330;
!= pact Tested - IIT Grinnell Supplied Main Feed Pipe; The referenced letter and this letter are interi= 50 55(e) repercs en the status of Main Feed Pipe Spcols which have cuestienable i= pact test results.
Attach =ent (1) is Censumers ?cuer Cc=pany's statement cf the status of activitd.es asscciated with the spc01s ubich was derived frc= the referenced letter and frc= the additional basic data given in 3echtel's MCAR Interi:
Report, provided as Attach =ent (2)~.
Another reperc, either interi= cr final, vill be previded by Septe=ber 7, 1979 ge nq Attachments: (1) Censumers ecver Cc pany's State:ent cf the Status cf Acticn As scciat'.d 'a'ith -"J2-G d -- =' ' Supplied Main Feedvater Pipe Spcols (2) MCAR-29, Interi: Repcrt :Io 2, dated July 26, 1979 T ' ~ a-a -
CC: Director of Cffice of nsrecticn 'c Att: Mr Victor Stelic, US:iRC (15) 3, q'4 2h7 Director, Cffice of Menage =ent Infomation and Prcgre: Centrcl, USIIRC (1)
~ s 7910310 M 5
Attachevi.t to !;LC- 77/.2 Appendix
. ',' Page 3 of 3 .
- '. !!CAlt 2') 1 Tir.r.lY IEPORT 2 .
July 26, 1979 Page 6 Code Acceptance Critetia for Charpy I= pact Results in Accordance with ASMF. Code,Section III,1971 Edition Through fiu==ce 1973 Addenda
- 1) Acceptance tests consist cf a set of three full-site spec 1= ens.
- 2) Speci= ens shall have a =i21=== of 25 =il lateral expansion.
- 3) Receses (Su==er Addenda,1973)
One retest permitted at the same te=perature provided:
a) Average values of the test results =eet the =ini=== require =ents b) Not more than one speci=en per test is belcw the =i=i=u= require-
=ent c) Speci=en not =eeting the =ini=== require =ents is not lower than 10 f t/lbs or 5 d's lateral below specified require =ent d) A retest consists of two additio=al speci= ens take: as close as practical to the f ailed speci= ens. For acceptance of the retest, both speci= ens shall =eet the minicus require =ents.
e 7/12/9
' Appendix
- Page 2 of 3 C.5depy Tes: Results Heat L-20479 .
. Spools Register . CKTR Heat-Trea:edl lELB15638134 MP44 . P142 Yes lEL315638136 MP46 P142 Yes 2EL315639135 MR418 P142 Yes 2ELR2S639135 MR426 P142 Yes 2ELBS639136 MR427 P142 Yes Test RestL:s +30F As-Received Condition Stress-Relieved 11757 1s: 2nd 1st Tes:
~
32 31 30 14 43 29 13 23 29 Passed .No No ,
' Yeu
- 1. Ecat treat =ent verification was based on review of actual documen-tation at the j'chsico. Hea: treatment censisted of pos: weld stress ,rslieving.
In accordance with code regula: ions material, this heat is considered acceptable in the : ress-relieved condition. Ecwever, cecause of incen-sistent results wit' other hea:s af ter s:ress-relievin3, Grinnell considers these resul:s ques:icnable. Disposicion of this =a:erial is considered undete rined at :his ti=e.
Spools Consisting cf a Cc=binacien of Heats N-32762 and L-20479 Secols Racister CMTR Hea:-Trea:ed IIL315633133 M?43 P142 Yes lEL325638133 M?412 P142 Yes lEL32S638136 MP414 ?142 Yes 3ecause these spools are combinations of unacceptable hes:s , they are no:
acceptable.
, n ' 4 2, b h
. 7/12/9
Page 1 of 3
'APPCDIX -
SU!C".ARY OF FI"D DOC'E;TATICN SURVrf FOR HF.CS N-32762 A:C L-20479 Charpy Tes: Resul:s
- Heat N-32762 Socols Register CMTR Hea -Trasted-9
. Fa' 1EL325633134 MP412 P142 2EL315639133 MR416 P142 Yes 2EL315639133A MR416AX P142 Yes 2EL32S639133 !IR424 P142 Yes .
2EL325639134 HR425 P142 Yes Tes: Resul: @ '30F '
As-Received Condition
~ 1s t ?nd 3rd 21 :25 29 40 18 30 45 32 Passed No 'No Yes
- 1. Heat trea::ent verifica:icn was based en revieu of a::tal documen-tation at the j obst:e. Heac trea::en: censisted of pos: 'eeld s:ress-relieving.
- 2. This spool is currently on hold at Grinnell Shop.
Because :he third :es: a: 3CF is cons'da-ad ' valid, d'spesition of na:crial is undeternined a: :his :ine. (See Code Acceptance Cri: aria for Charpy I= pac: Tes: Resul:s.)
e i
.v 4 ,79
Bechtel Associates ProfessionalCorporation Attachment to 3LC-7942 MCAR 29 Interim Report 2 July 26, 1979 Page 3 Forecast Data for Investiestien and Cerrective Action The next interim report is scheduled for August 23, 1979.
) -
Submitted by: b e '
Approved by:, O /> "
Concurrence by: )
/
FMM/js 7/12/9 _
4 271
~
Bechtel Associates ProfessionalCorporation Attach =ent to BLC-7942 MCAR 29 Interi= Report 2 July 26, 1979 Page 2 Grinnell concedes that i:s rationale, as de=onstraced by the resul:s of Heat N-32762 is not 100% consistent, and as a result, it believes that other stress-relieved heats =ay also be suspec: in rela;'on to the repeatability of the i= pact properties en each piece of equ p-ment.
Grinnell has rationali:ed that because it did not ob:ain i= proved Charpy test resul:s for Heat N-32762 s:ress-relieving, Hea: L-20479 cannot be considered to have the desired i= pact properties (+307) .
- 2) In May 1979, Grinnell tested 'three sa=p7es of Heat N-32762. These sa=ples vere frc= a fabricated spool whi.ch censisted of a sersigh:
piece of pipe which was hot-bent, air-cooled, and : hen full furnace stress-relieved. These sa=ples yielded resul:s of 9, 6, and 17 =11 lateral expansion. Because :he sa=ples were taken near the area of the bend, it was thought tha: they =ay have been frc= a heat-affected :ene (an area which had received an La:er=ediate heating and cooling cycle because of its proy d:y to the hac bend area).
d
~
Grinnell has indica:ed that =easure=ent of the actual sa=ple loca:icn relative to the area which vas heated and bent, shows tha: 1: was not significantly heated during the bending cycle. Grir.nell is preparing a graph of the te=perature versus dis:ance to show wha these sa=ples would have been subj ect to during the bending cycle.
The graph will be used to deter =1;.e whether the sa=ples cculd have been affected by the bending operatica.
Grinnell concluded that because the sa=ples were far enough fren the furnace not to ha af f ected by 1:s hea:, :he poor resul.s are because of the =aterial inconsistency associated wi:h :his particular heat. .
- 3) Bech el has perfor=ed a docu=enta:icn survey a: the jobsi:e to identify all spools Charpy tes: cualified in hea: trea:=ent cendi:icn and to ccnfir= tha: those spools iden:ified were in f ac: hea:-
trea:ed. The resul:s cf this survey, as rela:ed :o Heats N-32762 and L-2047;, are abula:ed in the at ached appendix.
Bechtel is still pursuin; the accep;abill:7 of naterial associated with Hea:s N-32762 and 1-20479 as well as any spools wi:h ho: bend sections. Theref ore, :he repor:able condi:icn of the pipe re=ains uncertain a: this :1=c. ,
r /
)
]![ ~,
[( - , .. .,/
+
i, Attach =ent 2
- Hove-215-79 Bechtel Associates Professional Corporation Attachnen to 3LC-7942 .
SUBJECT:
MCAR 29 (issued 7/13/79) .
I= pact Testing of Main Feedwater Pipe INTERIM REPORT 1 DATE: July 26, 1979 PROJECT: Consu=ers Power Cc=pany Midland Plant Units 1 & 2 Bechtel Job 7220 Status of Corrective Action and Investies -ion The status of actions in progress for resolution of the subject MCAR is as follows.
- 1) Bechtel has reviewed, at Grinnell, 70 spool data packages for i= pact test preperties on certified =aterial test reports in the following size range: 14-inch, 18-inch, 26-inch, and 36-inch dia=e:er pipe. This review covered all =aterial requiring Charpy i= pact testing. This action was taken to deter =ine whether addi:icnal material, other :han tha: identified in MCAR 29, =et specifica ica and ASME See:icn III, Class 2 code require =ents.
The spools were f abricated frc= a total of 16 hea:s. Of these heats, two =aterial test repor:s for Heats N-32762 and L-20479 contained ques:ionable data. Hea: N-32762 was considered ques:icnable because Grinnell perfor=ed = ore than one re:est, which is not allowed by ASME See:ica III, Class 2 code.
Grinnell has agreed tha: the original Charpy tes: resul:s ('30F) sub=1::ed for Heat N-32762 are not valid under ASME III, Class 2 require =ents in :he as-received condition. Grinnell had perfer=ed a Ch::py tes: (+30") f er the =a:erial of :his heat in :he s:ress-relieved condi:1cn but 1: had failed.
Grinnell was reques:ed to furnish 1:s rationale for accep:ance of the i= pac: :es resul:s en Hea: L-20479 in :he s:ress-relieved condition. Grinnell's rationale was based en 1:s e:gerience tha:
a suberitical (1100-1200F) hea: :: cat =en: has :he effec: cf reducing the spread of :cughness values (s= aller variances) and sligh:17 i= proving la:aral expansien values :hrough a sof:ening =cchanis= (a slightly reduced yicid pein:). The re:es: of Hea: L-20479, a::c:
stress- clieving, =c: the code i= pac: test requirc=en:s. Ecwever, t9 / 977 4 L/J
Attach =ent 1 Fase 3 neve-c., e, ~e ~y
- k. A= investigatien is being =ade to identi.^f piping speels, fr =
heats other than "-32762 and L-2%79, which were het ben; and stress-relieved.
This attach =ent a*te= pts to present the rav data presen'.17 available and is not =eant to offe - any conclusiens at this ti=e.
O 4 274 0
$,E 4
( r
- t s a
. Attach =ent 1 Page 2 yove.<,
.. -; ir 5 One spool of =sterial fre= this heat later required het bending and was subsequently stress-relieved. Charpy-inpact speci= ens obtained frt: this s;cci were 6, 9, and 17 ils lateral expansien, which is unac.M':able.
- 3. Heat L-20h*C
- 1. An initial set Of Charpy i= pact speci= ens were tested to the sa=e ASMI acceptance criteria given in A.2. '"he test results vere 13, lh and 32 =ils lateral expansica and the test was unacceptable.
- 2. 3ased on the test results of 3.1 and the criteria give: in A.3, no retest should have been allovec because the Original specimens failed to meet all three criteria needed to allev a retest. 1r
~
perfor=ed a s cend Charpy inpact test (with three speci= ens si=ilar to an initial tes: versus tvc speci= ens required in a retest). ~he results of the second set of tests were 23, 31 and h3 =ils lateral expansien a.id this test was also unacceptable.
3 This heat was subsequently stress-relieve:i to i=preve fracture properties of the as-relled =aterial and retested with a new set of three Charpy i= pact speci= ens. S e test results after stress-relieving vere 29, 29 and 30 mils lateral expansion. '"hese test results vere abcve the =ini=u require =ent and the heat was then considered acceptable in the stress-relieve:i condition.
- h. The results of the post stress relief tests describe:i in A.5 indicates that stress-relieving : ices ct always i=preve the Charpy i=;act results. Because of this, IT Grinnell no lenger believes that =aterial stress-relieved and tested ;er 3.3 can be considered acceptable.
C. Other pire Srecis With E 3ent Secti:ns Because of the unacceptable results obtained frc= het bent and stress-relieved speel described in A.5, the acceptability Of all other specis which were het bent an:1 stress-relieved is being investigated.
D. Status of 'dentificatier of "sterial Under I-vestin-icn
'-- '-- 32762 hate been
- 1. Five piping speels with =st de' ae.. a.. .o.u
. ,a. .
- 2. Five piping speels with :sterial f.-c= heat 1-2Ch79 have been a.de . a..o
. . s ._.a. .
3 '.'.".=.= a'-'.'..'~..e' ' ' '
-.....,.-~c~~.....~.=..'1'
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N-32762 r.d 1-2CL79 have been identified.
. 7lG
- t. s 900RORGH
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. ._. w.e .. .
3 Page 1 Eeve. 215-79 C"w.".SU.'r_-'.S _ 'tr,*aER C',',".
. .. A".4. ' S .~s a' ". V_"'~. .' .
OF "'EE S**A"'US OF AC"' 0N ASSOCIA"."fD VI~H ITT-GRI'UElL SUPPL:ID MAIN FIENA"'IR FI?E SPCOLS The purpcse of this attachment is to provide a s==ary of the sequence of events that are associated with each of the heats of piping.specis. '"his data is taken frc= Attach =ent No 2 and Censu=ers Fever Cc=pany's pre.'iously referenced letter.
A. Rest N-?2762
- 1. One set of - py i= pact speci= ens were taken, but vere .::
valid because they were obtained "rc= an incerrect 10 cati:n.
- 2. The "irst set of valid test specimens vere cbtained. For the material under censideratien, the ASMI acceptance criteria required three full-sized speci= ens be tested and that each speci=en have a =ini=u= test result of.25 =ils lateral expansien.
"'he test results ver; 21, h0 and h5 " s lateral expansien (a*. the required +20*? te=perature) and the test was unacceptable.
3 The ASMI Code all:vs ene retest at the sa=e test te=peratu:e
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