ML20073Q492
| ML20073Q492 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 02/23/1983 |
| From: | Lucks A STONE & WEBSTER ENGINEERING CORP. |
| To: | Cook R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20073Q476 | List: |
| References | |
| MPF-22, NUDOCS 8304290144 | |
| Download: ML20073Q492 (9) | |
Text
-
l STONE 6 WEBSTER ENGINEERING CORPORATION 245 SUMMER STREET. BOSTON, M ASSACH USETTS l
ADDRESS ALL CORRESPONDENCE TO P.O. BOX 2325. BOSTON. M ASS. 02107 W U. TELEX. 94 0001 sosTON 94-0977 DE 86 G N fC RR HILL., N J.
R PORTS h
CAGO N
LT G
" " 10 0 LAN D. OR EGON
" OASH48eSTON. D.C.
w
- O e
l JI8 United States Nuclear Regulatory Commission February 23, 1983 Midland Site Resident Inspection Office Route 7 J.O.
No.-
14358 l
Midland, MI 48640 Ref. MPF 22 Attention Mr. R. Cook RE:
DOCKET NO. 50-329/330 MIDLAND PLANT - UNITS 1 and 2 l
INDEPENDENT ASSESSMENT OF AUXILIARY BUILDING UNDERPINNING REPORT NO. 22 A copy of the Independent Assessment of the Auxifiary Building Under-pinning Weekly Report No. 22 for the period February 13, 1983 through I
February 19, 1983, is encicsed with this letter. Included as attachments are the minutes of the daily meetf.ngs held during the week between members of the Assessment Team and Site Engineering, Construction and Quality Assur-l ance personnel.
1 If you have any questions with respect to this report, please contact me at (617) 589-2067.
f!RINCl. PAL STAFF Very truly yours, L'
D 3 /g
/
g}
A/RA PAO
.M DPRP SLO I
9M DRMA RC A. Stanley Lucks g gp Project Manager DEP Enclosures
< ot
- FILEY,/A ASL/ka i
l l
FEB25 883 8304290144 830414 PDR ADOCK 05000329 G
J.O. N O.-
14358
' Midland Plant Units 1 and 2 Independent Assessment Auxiliary Building Underpinning -
l-4 l
Weekly Report No. 22
- 1 l
ff February 13, 1983 through February 19, 1983 ti Personnel on Site l
Stone & Webster Engineering Corporation (SWEC)
B. Holsinger 2/17 - 2/19 W. Kilker 2/17 - 2/19 L. Rouen 2/14 - 2/16 P. Barry 2/14 - 2/16 A. Scott 2/14 - 2/19 Parsons, Brinckerhoff, Quade and Douglas (PBQD)
J. Ratner 2/14 - 2/17 Meetings Attended Date Represented Purpose 2/14 Stone & Webster Daily Meetings L
through Bechtel j
2/18 Consumers Power Parsons (2/15 - 1/17)
Activities Construction - At the W12 pier location, the upper and lower leveling plates i
were bolted to the turbine building mat and the top of the pier, respectively.
l The nominal 2 inch spaces between the leveling plates and the structural concrete surfaces were than filled with dry-pack grout.
The telltale instrumentation was installed in pier E12, the formwork between El 600 and 605 was completed and the concrete was placed in a continuous pour from the bottom of the bell, E1 565, to top of the pier, E1 605.
The upper leveling plate was installed. The proorload jacking of Unit 2 FIVP was performed.
l Quality Control, Documentation and Records 1.
ReviewedtheQualityControlInstructiononproof-jackinhtheFIVPs.
r I
2.
Reviewed the QC Inspection Report completed for the Unit 2 FIVP proof-jacking.
i 3
Observec the Unit 2 FIVP proorload jacking and the in-progress QC inspection of the jacking.
l 4.
Reviewed performance history of concrete mix utilized for piers W12 and E12.
i
(
~J.O. NO. -14358-MIditnd Plent'
'Unitsi1 and 2 Independent-Assessment Auxiliary Building Underpinning 2
. Quality Control, Documentation and Records - (continued) k WitnessedQC'inspectionofdry-packplacementforupped[plateatpier 5.
W12.
~
I'.
J. 6.
Observed the placement of the concrete at pier E12.
'~
7 Witnessed the QC inspection and testing of concrete during the pier E12 concrete placement'.
Observations i
Construction - The placement br the dry-packgrobt between the le'veling plates and the structural concrete at pier W12 was properly done. However, the initial handling of _the_ grout material was found wanting in that the bags of grout were openned and spread-out well before required for placement.
As the activity pro-ceeded the Contractor modified the handling so that the grout bags remained sealed until just_ prior to mixing and placement.
Observations of. the bell area of pier E12 prior to concrete placement revealed t
minor. unraveling of the exposed soil. This occurrence was due to air exposure for a period of at least 11 days. - Although no significant problems occurred on this. bell,.the Assessment Team feels that based on normal good industry practice, for future piers the time between bell excavation and concreting should be appreciably reduced.
The concrete-mix and placement procedure for pier E12 were in accordance with the project documents. - The Contractor selected the same concrete mix design used for pier W12 since the mix design using plasticizer had not yet been app-roved.
The proorload jacking of Unit No. 2 FIVP was well planned and executed.
The entire orgs712ation responded efficiently in resolving a jack recalibration i
non-conformance.
Quality Control, Documentation and Records - The Quality Control procedures and repe,rts reviewed by the Assessment Team were properly prepared and executed.
The QC inspectors performing the inspections had a good understanding of the activity being inspected as well as their own role. With respect to the FIVP proorload jacking in particular, the Quality Assurance organization produced a good quality inspection plan from the field procedure outlined on a project drawing. In addition, the QA organization re, cognized ahead of time the need for training the construct 1on personnel on the jacking procedure and established training as a prerequisite for the jacking.
With respect toa minor problem noted in Weekly Report No. 20, the Team verified that-a change has been made. The PQCI and corresponding Inspection Report now provide a means for documenting the results of concrete consolidation.
A s
,,e-r,--w-,
- -m s
,,,-e,--,-,
y 4
-~e-n.,
e..-, - -
r e n,-
av.+,,,--
w.,-,--w--w~-
--n~- - -,ene,----u-_-
J.0'. NO.
14358
,,Midicnd Plcnt Un.iti 1 and 2-Independent Assessment Auxiliary Building Underpinning
- 3 i.
Non-Conformance Identification Reports S{atus of previous issues:
(NIR numbers on longer listed have been closed-
.Out.)
i.i a:
NIR NO.
Description Date (Opened)
(Closed) 5 Concrete Mix 2/10/83)
Qualification l
i
%Eb Aq Project' Engineer Project. Manager i
i c
r I
l l
i
4 INDEPENDENT ASSESSMENT TEAM MEETING WITH BECHTEL Date:
February 14, 1983 1
.1 httendees:
Bechtel Stor4/ Webster MPQAD CPCo
-I._ i J. Fisher L. Rouen R. Sevo E._Cviki P. Barry J. Gaydos 1.
J. Fisher said trial mixes of all new concrete mixes will be run. Not-1 ification will to given to all interested parties when begun.
2.
Concrete placement for E12 is scheduled for Wednesday. Unit 2 FIVP jack-ing is scheduled for Tuesday.
-3 R. Sevo asked about load trasfer mock-up.
J. Fisher will check on this.
i
- e l
l l
I k
l b
u i
c r------,-
4 INDEPENDENT ASSESSME,NT TEAM MEETING WITH BECHTEL j
Date:
Februe.ry - 15. 1983 Jttendees:
Bechtel' Stone / Webster MPQAD CPCo
. e J. Fisher L. Rouen R. Savo G. Murray
- E.~Cvikl-J. Gaydos l
Parsons J. Ratner 1.
In response to an earlier Team question, J. Fisher said b'entonite was notused to prevent slaking because Mergentime felt it would not adhere to the clay surface.
2.
J. Fisher advised that if a pier was poured using both a mix with plasti-cizer and without, cylinders would be made for each mix.
3 J. Ratner expressed concern about the bell in pier E12 being exposed to air for such along period of time. J.-Fisher said that he and M. Lewis had discussed' this before and will if necessary take -measures to pro tect the face of the excavation.
4.
E. Cvik1 stated that a new crack in the FIVP had been mapped. This crack would be inspected by CTL Company.Bechtel Ann Arbor will evaluate.
1 o
f i
1 O
t
.c.ve,~
-.,,.v
,-w,-
.,,,-,.v.,.
-yw-e..,,,y-m m
-y e-- -
,,,---,-g
,w
s v.
-INDEPENDENT ASSESSMENT TEAM MEETING WITH BECHTEL Date: February 16,.1983.
i
- Attendees
-Bechtel Stone / Webster MPQAD
- CPCo
}
E. Cviki A. Scott R. Sevo G. Murray lLI.
.J. Fisher P. Barry L. Rouen Parsons l
J. Ratner 1.
J. Fisher will advise when trial mixes will be run for the concrete mix C-Sc with & without plasticizer.
2.
The schedule for FIVP jacking has been delayed, due to the fact that the jack calibration records must be checked for those jacks used to install anchor bolts.
l 3
L. Rouen asked for clarification on which ' steps in MCP 16.000 on splicing of Fox-Howlett couplers must be performed by the qualified splicer whose identification mark goes on the bar.
- 4.. J. Fisher advised that there would be a " dress rehearsal" for the load
['# -
transfer prior to actual pier loading. Will advise the time.
5.
L. Rouen stated the F1VP proof jacking and pier W12 concrete placement were performed adequately in the views of the Assessment Team members present.
r 1
1 I
.L i
I r
p
~
l
.a INDEPENDENT ASSESSMENT TEAM MEETING WITH BECHTEL Date: February 17, 1983
{
a 1
Attendees:
Bechtel Stone / Webster MPQAD CPCo 1.
~
J, D. Lavelle A. Scott
.I. Siiah G. Murray i:
E. Cviki J. Gaydos Parsons J. Ratner 1.
D.-Lave 11e' reviewed the list of requirements needed prior'to jacking the FIVP Unit 2 east side. At present the start of jacking will be 7:00 AM on February 18, provided all requirements are met this date.
2.
A " dress rehearsal" for pier W12 load transfer will be held in Mergentime.'s Mechanical Shop at 10:00 AM and 5:30 PM on February 18, and at pier W12 on Monday February 21, with the actual load transfer to be performed on February 22.
r l
3 D. Lavelle presented a new organization chart to show how Bechtel plans to organize their forces to expedite the disposition and closing of NCR's and to effect better planning and scheduling of materials for.the con-struction forces.
4.
Mr. Cviki stated that CTL had been on the job to investigate the new crack that appeared in the west FIVP and that he was awaiting a written report.
(
5.
J. Ratner asked if there were plans to reduce the time for leaving the bell open.- J. Fisher stated that scheduled time for the bell-to be open was to be 12 to 13 days and thought this was good and not detrimental.
6.
A. Scott requested information concerning the resolution of the question originally raised on January 27, concerning " hold tag" on Reshore Channel and which was dropped on February 10 from the meeting notes.
" Hold tag" is still in-place.
J. Fisher indicated he would raise this concern in the weekly management meeting.
1 bi i.
., _ _... _.. ~.. _.. _ _, _.,., _
(
INDEPENDENT ASSESSMENT TEAM MEETING WITH BECHTEL Date:. February 18, 1983
,i-
~
Qtendees:
Bechtel Stone / Webster MPQAD CPCo
~
E. Cviki A. Scott G. Murray J. Gaydos W. Kilker J. Fisher 1.
J. Fisher advised that jack stand fabrication will begin today at the Poseyville fab. shop.
2.
J. Fisher said FIVP, Unit 2 proof-jacking will be either on February 18 or February 19 Will advise.
I I
r f%