ML20083J683
| ML20083J683 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 12/22/1983 |
| From: | Quamme D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Baranow S STONE & WEBSTER, INC. |
| References | |
| NUDOCS 8401050350 | |
| Download: ML20083J683 (4) | |
Text
Consumers
. PRIN IPAL STAFF Power VIA AOPRP Company
.yRA 3/RA DRyst; Maoiend Project: Po som 1963 Miciend, MI 48640 * (517) 6314650 4
WA ML December 2.,
1983 if4F FIlo f,, s g.3 50-0 Mr S W Baranow Stone & Webster Michigan, Inc P O Box 1963 Midland, MI' 48'640 MIDLAND ENERGY CENTER CWO 7020 HANGER REINSPECTION File:
Bl.1.7, 0655 UFI:
99*08, 53*50*04 Serial:
CSC-7115 Attached are copies of memos written by J Christy, MPQAD on November 21, 1983 and December 6, 1983.
These 'should clarify the meeting note in Report No 23 regarding reinspection of 500 large bore hangers.
Please advise us if more information is needed to resolve this issue.
A M
DLQ/DDJ/ kip d eppler, NRC w/a ces JJHarrison, NRC w/a
'RJCook, NRC 'w/ a RAWells, MPQAD w/a BHPeck, MEC w/a NIReichel, MEC w/a m
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JTChristy CollSumBIS
,ouc November 21, 1983 POWBr N
escci-MIDLAND' ENERGY CENTER PROJECT PROJECT CONCERNS RELATIVE TO DESIGN CONTROL -
iatta m REDLINE REINSPECTION IMPACT ON THE HANGER ~
C'"'"*****
REINSPECTION PROGRAM QC-JTC-83-62
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- ?FPlumb nnard.
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Wrriedrich.
The following data is submitted to support the required decision on'the action
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plan for the. subject. Project Concern:
1) 1768 hangers have been reinspected using the P-2.30 PQCI.
2)
Based o.n a 'suryey of the closed P-2.30s, between 69 and 73 percent were inspected using redlines (LR,~SH or FRL drawings).
This is a population of.approximately 1250 reinspections.
3)
Of the '1250 reinspections in 2), approximately 450 will have to be reinspected due to problems with disapproved, illegible or
" approved with comment" redlines.
- 4) Approximately 50% of all reinspections will require another inspection s
due to the decisi.on to remove paint and rust from welds.
5)
All large' bore hangers will require reinspection for the location criterion.
The data in 1-5 above can lead to the following conclusion concerning reinspection af.ter redline incorporation:
Completed P-2,30s P-2.30s using unecceptable.
P-2.30s which used redlines which probably using redlines
. redlines which must be (2) minus reperformed (3) minus require weld reinspection-(50% of (2) )
1250 450 621 1
P-2.30s wilich used Number of hangers which will have to be redlines which are reinspected as a result of the subject
~
"8 part of population (3) proposed action plan.
i 400 (50% of (3) )
225 J
This does not account for possible decisions related to NDE issues or IE Eulletin 79-14 issues.
If you nave any questions concerning this data please see me.
JTC:m!t
JChristy 77 To
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7 MEP A COnsurners raou December'6, 1983 pgy(g[
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. MIDLAND ENERGY CENTER PROJECT OCRpany kesect HANGER REINSPECTION PROGRAM
" t *'n CONSOLIDATED APPROACH TO RESTART
- =.csees:cscc MEP-83-52 CPaulsen MMcClain cc LMouring SWilliams CAnderson WJFriedrich FSchulmeister The. following recommended actions deal with the restart of the Hanger Reinspection tetions were discussed and agreed upon by the MPOAD personnel Program. These listed below.
L M Plumb F Schulmeister C Paulsen M McClain (NDE only)
L'Mouring B Maycheck (NDE only)
C Anderson
.f For all inspections completed after the lifting of stop werk order Redlines A:
- FSW-34, only drawing / ISO's for which all redlines have been inccrporated will be used.
B:
All P-2.30's which were compl'eted using redline drawings will be reinspected for orientation and configuration using a drawing / ISO with incorporations completed.
Welds are being inspected with all paint and heavy rust removed.
Paint / Rust:
Any welds inspected previously through paint or rust will be inspected aSain after cleaning.
Location:
Due to s' tress calculation requirements fcr large bore hangers, locations for all large bore hangers will be inspected to the H-ISO locat, ion.
Drawing Conflicts A: There has been a conflict _ between H-ISO and M-ISO for pipe configuration.
The known cases have been corrected.
Any. future cases will be documented on an NCR for indeterminate location and class break.
5: The ATMS will be completely updated by 12/C/B3 per Document Control. When FSW-34 is lifted the ATMS will be the controlling document to determine drawing revisior, status.
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QA will All hangers with open C-1.52's will have to be closed.
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' C-1.52's:
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rewrite the PQCI and training will be providec to certify inspectors.
11E Bulletin 79-14:
A dopy of the hanger sketch will be marked up as an as-built drawing during the P-2.30 re-inspection.
This drawing will be retained by MPQAD-QC..This will centinue until a co=mitment to 79-14 is made by MPQAD.
~
QARs/NCRs
'Against M-326 &
~ ~
Because c'r the undispositioned QAR's and NCR's against these C-304:
specifications, PQCI P-2 30 will be revised to meet the
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. minimum requirements of the FSAR. and codes referenced in the l
FS AR., Note:
A) Undercut requirements under the new revision to P-2 30 are going to be revised. 5)
Skewed fillet weld criteria is going'to be r'evised.
Recommendations:
Request a freeze of P-2.30 inspection criteria until the HRP program has reached a stabilized level.
At that time changes would be discussed and added with concurrance of the assistant superintendent.
During the restart and fer the cocpletion of the HRP, and to Summary:
facilitate the above actions, all hangers within the program will
[J' have a Rev. 5 IR for P-2 30 opened.
This could be only for a statement that' hone of the criteria changes af fects this _ hanger to a detailed inspection.
The scope of the IR would be the governing facter for the amount of reinspection to the later Items needing reinspection will be determined by the AQAES rev.
for inspection atributes and the Assistant PFQCE for the individual hangers.
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