ML20082M529
| ML20082M529 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 10/19/1983 |
| From: | Lucks A STONE & WEBSTER, INC. |
| To: | Cook R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20082M450 | List: |
| References | |
| MPF-56, NUDOCS 8312060174 | |
| Download: ML20082M529 (11) | |
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6 STONE & WEBSTER MICHIGAN, INC.
P.O. Box 2325. BOSTON, M ASSACHUSETTs 02107 United States Nuclear Regulatory Commission October 19, 1983 Midland Site Resident Office Route 7, 1983 J. O. No. 14358 Midland, MI. 48640 Ref. MPF 56 Attention:
Mr.
R.
Cook DOCKET NO. 50-339/330 MIDLAND PLANT UNITS 1 & 2 INDEPENDENT ASSESSMENT OF UNDERPINNING REPORT No. 56 A copy of the Independent Assessment of Underpinning Weekly Report No. 56 for the period of October 9,1983 through October 15, 1983
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is enclosed with this letter. Included as attachments are the minutes of the daily meetings held during the week between members of the Assessment Team and Site Engineering, Construction, and Quality Assurance personnel.
If you have a,ny questions with respect to this report, please contact me at ( 617 ) 589-2067.
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Stanley Lucks Project Manager Enclosures ASL/pd l
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8312060174 831130 PDR ADOCK 05000329 G
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i J. O. No.-14358 Midicnd Plant Units 1 & 2 Independent Assessment of Underpinning Weekly Report Ko.jg5 October 9, 1983 through October 15, 1983 Personnel on Site Stone & Webster Michigan, Inc.
W.
Kilker 10/9.-10/12 B.
Holsinger 10/10 -10/15 P.
Majeski 10/11 -10/15 J.
Sprin6er 10/9 -10/12 S.
Lucks 10/12 -10/13 D.
O' Nan 10/12 -10/13 P.
Barry 10/11 -10/1E Parsons, Brinckerhoff Mich'igan, Inc.
F.
Balsamo 10/10 -10/13 D.
Ratner 10/13 Meetings Attended Date Represented Purpose
'0/10 -10/12 Stone & Webster Daily Assessment 1
Bechtel Team Meeting Consumers Power Parsons
.10/11 MPOAD Assessment Team Stone & Webster Meeting with MPQAD 10/13 NRC Monthly Meeting with Consumers Power NRC
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Stone & Webster Parsons l
l Underpinning and Remedial Soils Activities - Construction Kc10 -Ke9 Drift:
The final drift support sets were installed.
Work has l
ceased irr this area, awaiting processing of a change request to revise construction sequencing to facilitate further work.
Pier'E14: Minor work was accomplished in this area to install struts between E14 and E12.
Pier Ke 3:
The upper leveling plate, bearing plate, jackstands and jacks were ' installed.
Kc2 -Kc3 Drift:
The drift invert steel p;acement was ccm'pleted.
Pier W14: Minor work was accomplished in this area to install struts l
between W1t and W 12.
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J. O. No. 14358
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!ddicnd Plcnt Units 1 & 2 Independent Assessment of Underpinning East UAT:
The excavation and bracing and larsing installation continued. -
Several probings were made in preparation for grouting but the. probe holes encountered concrete before r.eaching the required depth and were terminated.
West UAT:
The excavation and bracing and lagging installation continued.
Grouting operations continued in preparation for further excavation.
SWPS:
The installation of soldier piles continued.
The excavation for the access pit adjacent to the northeast corner of the structure continued.
The installation of the lagging for the pit was started.
BWST:
The installation of the reinforcing steel for both tanks continued.
Yard Area:
The removal of the two 36 inch diameter pipe casings was completed and the hole backfilled with concrete.
The excavation of the near surface disturbed material surrounding the casing in the Q scil area was startec.
Assessment Team Observation - Construction The Assessment Team observed that the lagging and backpacking in the Kc10 -
, Kc9 drift and the reinforcing steel for the SWST were installed in accordance with good practice.
The grout and lean -flyash mix for soldier beam 16 was placed in accordance with project procedures.
The re'moval of the 36 inch diameter casins in the Q soils area was carefully controlled.
It was noted by the Assessment Team that final cleanup of the hole after reaming was carefully checked. However, two aspects of the casing removal and backfilling could be improved'.
There did not appear to be any identifiable control of_the consistency of the slurry nor was there a check that the process used to mix the slurry was effective.
Secondly, the time lag between the completion of reaming operation and backfilling with-concrete was too long.
Subsequent to the concrete backfilling and initial set at the location of the 36 inch diameter casing in the o soils area, the near surface disturbed soils was greater than anticipated.
The Assessment Team observed that the FSO and engineering personnel as well as the crafts people exhibited the correct attitude and attention in determining the extent of the disturbed zone. and delaying the backfilling until a complete evaluation could be made.
Assessment Team Observation - OA/OC NI? Number 15 concerning the certification of M?oAD supervisers was closed on October.12.MPOAD has reorganized their staff to provide one level of certified supervision above the inspector level.
Job descriptions have been developed such that technical direction to inspectors will not be crovided by supervisors who are not certified.
This response by M?QAD resolves the problem with 4.mplementation of procedure B-3M-1 Work Activity Packages Tne Assessment Tear reviewed WA?'s numbered 60,61.62.63,65 and 67 and succitted questions and contents to FSO.
The questiens and ccmments en WA? 62.63.65 and 57 were satisfacterily resolved. thus the review of t.hese packages is cceple e.
TSC actien items remain Open en WA? 60 and 61 and en WA? 25 and 59 wnich were
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'e J. O. No. 14358
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Mid1cnd Plent Units 1 & 2 j
Independent Assessment of Underpinning Nonconformance Identification Reports NIR No.
Description Dat'e (opened) (Closed) 14 Nut Procurement 8/11/83 15 MPQAD Supervisor 9/19/83 10/12/83 Certification Open Items The Assessment Team has revised their method to track items discussed during the Daily Meeting with Bechtel.
The revised method allows for a more formal means to confirm implementation of items requiring changes to documents. 'In addition the postscript notation of the status of each item has been revised te be more definitive of the intent of the item.
The following notations will be used:
OPEN ITEM - An item for which an action is required.
The item will remain open l
until the required action has' betn taken. Tracking is required.
- CLOSED ITEM - An item, usually brou6itforward by the Assessment Team, which is discussed and adequately responded to.
No tracking is required.
l INFORMATION ITEM - An item, brought ferward to provide general or background information regarding the work, such as work status or an upcoming design change. No tracking is required.
OPINION ITEM - An opinion or suggestien, given by the Assessment, Team, expressing f
an alternate construction or quality assurance technique. The opinion or suggestion is given as a possible alternate that may facilitate an operation.
No r,esponse or implementation is required as a result of an Opinion Item.
CLOSES ITEM XX-XX - This notification is the mechanism by which a previously open item is closed.
The Assessment Team will review the closure cf previously identified open items for inclusion in this revised tracking system.
The following is a listing of all open items from the Daily Meeting Notes with Bechtel and the Weekly Meeting with MPQAD.
Carry-over items from past weeks which have been closed out this week are also listed.
l Item No.
Descriction Closure l-45-8C Discussion on Mechanism open of Identifyin6 Quality Concerns 48-80 Structura'l Backfill open PQCI Adequacy W.E. 51.pg. A Control Document Open l
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J. O. No. 14356 Midland Plant Units 1 & 2 Independent Assessment of Underpinning 6
Item No.
Description Clostn 52 40 MPOAD Independent Oper Velding Inspection Review 55-2 Plasticized concrete open Pdx Tests 55-31 SWPs soldier Piles 56-4 56-8 Potential Interference open at OBS 4
.56'-10 BWST Reinforcing Steel Open Placement Inspection Lean Flyash Placement Open 56-12 Procedure.
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Notca.of Daily Mesting
. Independent Assessment of Underpinning
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Midland Plant, Units 1 & 2 Consumers Power Company H21d at Midland Site Location,
Midland, Michigan October 10, 1983 Present For:
Consumers Power Bechtel MPOAD Stone & Webster G.
Murray J.
Fisher None J. Springer E.
Cviki W. Kilker J.
Gaydos Parsons None Item 56 Work Status.
A.). On the UAT excavations at CT1/12 work has been temporarily halted,
pending a FCR and drift set modification requirement.
In the Interim, additional soil stabilization by Erouting is being performed in the west UAT.
B) Additional, void areas were encountered in the turbine building mat during the drilling of Hilti-bolt holes.
J.
Fisher reported an NCR.
was issued and dispositioned to repair.
The repair has been completed and the grout cure period is underway but load transfer'is still a week cway.
C.)
Work on piers E/W 13 will proceed once the required concrete strengths,
in E/W14 are attained and once a FCR on strut connection details is issued.
'D. ) The Kc10- Kc9 drift excavation is near completion.
E.)
On the SWPS, the excavation to install the first waler level has begun.
An FCR has been issued to allow installation of the remaining Phase I soldier beams.
the F.)
The drill rig will establish the bentonite. feed hole adjacent to 36 inch. diameter casing in Q-soil that will be removed. (.'INFORMATION ITEM )
Item 56 BWST Corrective Work.
Sprinser' asked if control joints are planned for supplemental concrete J.
rinS beam installation.
E.
Cviki replied that control joints are part of the design, ( CLOSED ITEM )
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Ite= 56 Lean Flyash Placement Procedure..
Gaydos supplied a copy of the proposed chanEe to the procedure on flyash I
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placement.
J.
Springer questioned why the existing Bechtel specification of lean flyash greut placement was not referenced. ( OPEN ITEM )
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Notsa of Daily 'esting ~
M Ihdependent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company
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Held at Midland Site Location
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Midland, MI.
October 11, 1983 Present'For:
Consumers Power Bechtel MPOAD Stone & Webster R.
Wieland J.
Fisher R.
Sevo W.
Kilker J.
Gaydos J.
Springer J.
Darby Parsons F.
Balsamo Purpose This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant, Units 1 & 2.
Discussion Item 56 SWPS Soldier Beam Initallation.
J.
Fisher reported that Engineering has approved the FCR < 6873) to advance.the remaining Phase I soldier beam holes an additional depth to insure adequate bearing capacity.
Installation Work has resumed. ( CLOSES ITEM 55-31 )
. Item 56 Removal of Yard Area 36 Inch Diameter Casings.
J.
Fisher reported that work on the removal of these casings and concrete, replacement is expected to be completed today.
( INFOR,MATION ITEM )
Item 56 BWST Reinforcing Steel Placement Inspection.
J.
Sprin6er questioned if all reinforcing steel must be in-place before a QC inspection is requested.
FSO and MPQAD will respond.~( OPEN ITEM )
Item 56 Lean Flyash Placement Procedure.
In response to Item 56-3, J.
Gaydos said the Bechtel specification on lean flyash pertains to a different mix design than'the one being used by SWP on the SWPS work.
In addition, the activities necessary to insure proper place-ment are covered in existing procedures or specifications.
J.
Sprinser will confer with J.
Gaydos and the RGE to verify.
( OPEN ITEM - CLOSES ITEM 56-3)
Item 56 Potential Interference at 035 4.
J.
Springer questioned if the proposed cathodic protection will create an interference near any required "fix" in the vicinity of OBS 4-adjacent to the NE corner of the Diesel Generator Building.
J.
Fisher & J.
Darby will investigate. ( OPEN ITEM )
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Notco of Daily Mesting
' Independent Assessment of Underpinning 5
Midland Plants, Units 1 & 2 Consumers Power Company Held at Midland Site Location
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Midland, Michigan.
October 12, 1983 Present For:
Consumers Power Bechtel MPQAD Stone & Webster R.
Weiland J.
Fisher R.
Sevo W.
Kilker G.
Murray J.
Gaydos J.
Springer i
E.
Cvikl B.
Helsinger P.
Majeski Parsons F.
Balsamo Purpose
~ This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant, Units 1 & 2.
Discussion Item 56 Kc10-Kc9 Drift Status.
J.
Fisher stated work on this drift and pier Kc9 is delayed pending processing of a FCR to re-shore the drift near proposed pier Kc9.
Resumption of work is not expected for one week.
( INFORMATION ITEM )
Item 56 BWST Reinforcing Steel Placement Inspection.
In respense to Item 56-6, R.
Sevo stated that QC has a mechanism for documenting the status of progressive inspections.
That is, the entire BWST installation of reinforcing steel does not have to be. installed prior to requestin5 a QC inspection.
J.
Fisher said FSO will verify the approach that the direct-hire group will use to request inspections. ( OPEN ITEM -
CLOSES OUT ITEM 56-6 )
Item 56 Status of US Testing.
J.
Fisher said the Bechtel Field Engineens report on US Testing is being forwarded to the Subcontractor Administrator.
A meeting will be held with US Testing to describe the action that Bechtel anticipates the Contractor to take in order to satisfy the concerrs. described in the report. ( INFORMATION ITEM )-
I Item 56 Lean Flyash Placement Procedure.
J.
Springer stated a discussion was held with J.
Gaydos and J.
Givens (RGE) concerninE' lean flyash placement.
J.
Springer is satisfied that the place-ment activity is adequately described in the project documents. ( OPEN ITEM WITH RESPECT TO REVISION TO PROCEDURE, CLOSES OUT ITEM 56-7 )
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Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Lochtien Midland, Michi6an October 13, 1983 No meeting was held on this date.
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,y Notes of D3ily Meeting Independent Assessment of Underpinning s
Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Location Midland, Michigan October 14',
1983 No meeting was held on this date.
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t No.tss of MPQAD Waakly'drating Indsp:nd:nt Assessment of Underpinning Midland Plant Units 1 & 2
-s Held at Midland Site Location r.
Midland, Michigan October 11 1983 Present For Stone & Webster MPQAD W.
Kilker J.
Meisenheimer B.
Holsinger M.
DeWitt D.
Horn R.
Oliver Purpose I
This meeting is held each week to obtain information from MPQAD regarding the Soils Underpinning work at the Midland Plants Units 1 & 2.
Discussion Item 56-1Q - Status of NIR # 14.
J.
Meisenheimer reported all responses to the NCR have been received. MPQAD
- :Us expbeted to verify any corrective acticn shortly.
Root causes of the problem were associated with the Supplier Quality Representative _( SQR ),PQCI deficiency,and confusion on specification requirements. ( INFORMATfDN ITEP NIR
- 14 REMAINS OPEN )
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g Item 56 Status of MPQAD Welding Consultant Study.
W.
Kilker asked the status of the consultant's report ( Refer to Item 52-40 ).
J.
Meisenheimer said a draft copy had been prepared but the final report was not available yet.
J.
Meisenheimer noted that over the past few weeks the number of-NCRs and problems associated with welding have been greatly reduced.
( INFORMATION ITEM 4Q REMAINS OPEN )
Item 56-30--
Use of Green Tags with QC Hold Tags.
W.
Kilker asked the status of the use of the green FSO descriptive tags in conjunction with QC Hold Tags.
J.
Meisenhe~imer explained that the green tags will not be used in the future' to describe the extent of the work affected by a given NCR.
Rather, this description will be included on the QC Hold Tag after formal communication between MPQAD and Engineering.
(CLOSED ITEM )
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