ML20078J576
| ML20078J576 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 09/08/1983 |
| From: | Lucks A STONE & WEBSTER, INC. |
| To: | Cook R NRC |
| Shared Package | |
| ML20078J537 | List: |
| References | |
| MPF-50, NUDOCS 8310170549 | |
| Download: ML20078J576 (15) | |
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e Ydlid STONE & WEBSTER MICHIGAN, INC.
P.O. box 2325. BOSTON. M ASSACHUSETTS O2107
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[dh United States Nuclear Regulatory Commission Septemter* 8, 1983 Midland Site Resident Office Route 7 J.O.No. 14358 Midland, MI 48640 Ref. MPF 50 Attention Mr. R. Cook DOCKET NO. 50-339/330 MIDLAND PLANT UNITS 1 & 2 INDEPENDENT ASSESSMENT OF UNDERPINNING REPORT NO. 50 A copy of the Independent Assessment of Underpinning Weekly Report ho. 50 for the period of August 28, 1983 through September 3,1983 is enclosed with this letter.
Included cs 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 any questions with respect to this report, please contact me at (617) 58 -2067.
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. St'anley Lucks Project Manager Enclosures ASL:ck BX714358-10 SEP 141993 8310170549 831003 PDR ADOCK 05000329 G
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',J.O.No. 14358 Midland Plant Units 1 & 2 Independent Assessment of Underpinning Weekly Report No.'50 August 28, 1933 through September 3, 1983 Personnel on Site Stone & Webster Michigan, Inc.
A. Lucks 8/30 - 9/1 P. Majeski 8/29 - 9/3 L. Rouen 8/29 - 9/2 P. Barry 8/29 - 9/1 B. *dolsinger 8/30 - 9/2 J. Springer 8/29 - 9/2 W. Craig 8/30 - 9/2 Parsons, Brinckerhoff Michigan, Inc.
P. Parish 3/30 - 9/2 Meetings Attended l
Date Represented Purpose 8/29 - 8/30, Stone & Webster Daily Meetings 9/1 - 9/2 Bechtel l
Consumers Power Parsons 8/31 Stone & Webster Engineering &
i Bechtel Construction Consumers Power Coordination Meeting Underpinning and Remedial Soils Activities E8 Grillage: The grillage beams have bee 1 installed. The installation of bracing has begun.
Pier KC10:
The pier concrete was placed using a
concrete mix with superplasticizer. The upper leveling plate has been installed and dry packed.
East Access Shaft:
Additional lagging has been installed and excavation l
continued to lower.the shaft to the next working level, el 597.
W8 Grillage: The grillage beams have been installed. Insta11aticn of bracing I
has begun.
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t Pier'KC3R The pier excavation was' completed and the concrete,placed.
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West Access Shaf t:
Additional lagging has been installed, and excavation coM inued to lower the shaft to the text working level, el 597.
Assessment Team Observations-Cohstruction The first use'of concrete with superplasticizer was successful in Pier KC10.
However, it vss noted that the effect of the a terplasticizer has a relatively I
short life, with the concrete slump decreasing at a rate of 1 inch in approxi-ma*ely 5 minutes. The contractor has temporarily stopped using this mir, until the experience gained from this first use has been evaluated and any required procederal changss implemented. The Assessment Team considers this action to be the proper approach.
j The sand blastisg of' the existing concrete foundations at the BWST's to obtain
, proper bond.with,the new concrete foundations is judged by the Assessment Team to be ~in accordance with the specifications.
.i The' lagging installed in the E/W access shafts meets the requirements of the 1
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. specifications and was installed in a manner consistent with good practice.
Assesaent Team Observations--QA/QC i
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Reviewed thsf receipt inspection packages for the grillage beams and associate" items.
These; packages are in compliance with the project requireecots for \\ certified mill test reports and provide an excellent mechanism for; traceability.
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The assessment ( team members initiated areview of MPQAD training and
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certifications.
This review is still ongoing 7nd the results will be 1
reported in a futur,e weekly report.
L Assessment Team Observations--Training Program A
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Me'mbers of.;the Assessment Team observed all or portions of the following training classes held during the week:
Cadwelding Inspections, General Welding, Performance nemonstration for Inspecti'cn of Erection of Structural Steel, Instrutor Training, Excava-tion in "Q"' Soils Area, Nonconformance Reprts, Remedial ' Soils Project
'I Quality Plan MPQP 1 & 2, Survey Control for FSO Activities, FSO Coordina-tion Fcrm Procedure, Soils T!ork Permit System, Excavation Permit System y,
and Emergency Corrective Measures.'
The content l of the various classer was ' judged to be satisfactory.
The training classes addressed all, aspects of the specific tasks (i.e.,
l related documents and procedures, ecceptance criteria, reports, unusual 1
circumstances, responsibilities).
The instructors were well prepared and demonstrate good understanding of the sabjects.
The Instructor Training classes are excellent.
Instructor trainees are taught by a professional instructor in the techniques of course preparation and presentation. Videotaping of in'dividati performances allows the trainees j
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to practice and evaluate the' use of the training techniques.
This class
- greatly enhances the overall training efforts.
The training program is admministered in part using CPCo's Training Department Instructions. Necessary instructions have been implemented (i.e.,
control of instructions, lesson' plans, and examinations). An important item in the training procedures is the use of the Unresolved Question Form, which is used to answer questions that the instructor cannot answer in class. This provides a controlled method to handle questions which could possibly identify inadequacies or ambiguities in a technical procedure.
The Assessment Team concludes that considerable effort has been expended in the area of training, and this effort has resulted in an overall training program which is above average and well suited for its intended purpose.
J Work Activity Packages The Assessment Team reviewed the WAP-55 for Piers CT3 and CTIO.
All team questions and comments were satisfactorily resolved, and the review is complete.
The Team's questions and comments on WAP-50 and 51 which were previously reviewed have been answered; thus, the review on these packages is complete.
The Team's review of WAP-54 remains open, awaiting completion of two action items by FSO.
Nonconformance Identification Reports NIR No.
Description Date (Opened) (Clostd) 14 Nut Procurement
~8/11/83 Open Items 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.
Item No.
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Description Closure Reference W.R. 25, pg. 5 Commitment to Assess W.R. 50 l
Training and Personnel Records.
45-8Q Discussion on Mechanism Open of Identifying Quality Concerns.
48-4Q Structural Backfill Open PQCI Adequacy l
49-6 Clarification of Struc-50-21 & 50-29 tural. Backfill Specifi-cation Requirement BX214358-10 3
- Item No.
Description Closure Reference 49-8 Impact on Welding Open Nonconformance on E/W8 Crillage Installation 49-31 E8 Crillage Bearing 50-10 Assembly 50-2 Curing Compound on open BWST 50-15 Concrete Spacers open 50-16 Soldier Pile Information open 50-17 Background Engineering Open Information 50-18 Concrete Information Pachage Open 50-24 Need for Additional Welding Open Qualifications l
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Project Engineer Project Manager ~
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o Notes of MPQAD Meeting
, Independent Assessment,of Underpinning Midland Plant Units 1 & 2 Held at Midland Site Location Midland _, Michigan Week of August 28 - September 3, 1983 No Weekly MPQAD meeting was held this week.
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e NotIso of Daily Heating Independent Assessment of Underpinning
- tEdland Plant Units 1 &~2 Consumers Power Company Held at Midland Site Location Midland, Michigan August 29, 1983 Present For:
Consumers Power Bechtel MPQAD Stone & Webster G.
Murray J.
Fisher J.
Moran J.
Springer R.
Wieland J.
Gaydos P.
Barry E.
Cviki Parsons None Purpose i
This meeting is. held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant, Units 1 & 2.
Discussion Item 50 Construction Status.
The reinforcing steel for pier KC10 is being installed.
Concrete placement is scheduled for Tuesday.
Groundwater seepage into the East access shaft has resumed. The seepaSe is occurring at the face of the turbine building and is by passing the area that l
was soil stabilized last week.
Probing in the UAT will begin when the construction procedure and the PQCI are revised to the latest criteria.
Probing will be scheduled concurently j
with the pipe stiffener installation in the UAT.
The trestle scheme to install soldier piles in the train A pipe excavation has been abandoned.
Backfilling in this area will be completed prior to installing soldier piles. ( CLOSED ITEM )
Item 50 Curing Compound on BWST.
P.
Barry asked if the curing compound used to cure the grout for the. shear-l connectors would be removed orior to concrete placement.
J.
Fisher is to investigate. ( OPEN 1315f' Item 50 Balance of Plant PQCI?s.
J.
Fisher stated that all Balance of Plant PQCI's except the PQCI required for Train A pipe welding had been released for use for soils work. ( CLOSED ITEM )
Item 50 BWST Reinforcing Steel.
J.
Fisher stated that the reinforcing steel for the BWST has not been receipt inspected by QC receiving.
The shipment was placed on hold by an NCR by QA concerning documentation.
Receipt inspection will be done when this NCR is resolved. ( CLOSED ITEM )
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Nstes er Daily Masting Indspandsnt AEascEms ' cf Underpinning Midland Plant. Units-
&2 Con'2umarc P war Comptny Held at Midland Site Location Midland, Michigan August 29, 1983 Item 50 New NCR Form.
J.
Moran stated that the new NCR form that replaces both forms used by QA and QC respectively became effective today. ( CLOSED ITEM )
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Nat$aofDailyMeeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Location Midland, Michigan August 30, 1983 Present For:
Consumers Power Bechtel MPOAD Stone & Webster G.
Murray J.
Fisher R.
Sevo J.
Springer J.
Schaub J.
Gaydos P.
Barry E.
Cviki W.
Craig Parsons W.. Parish.
Purpose This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant. Units 1 & 2.
Discussion Item 50 Spherical, Bearing Plate.
J.
Fisher stated that the manufacturer's representatibe's has been on site to inspect the scratch on the spherical bearing plate.
The representative stated that the scratch has no effect on the integrity of the bearing assembly.
The FSO recommended dispostion for the NCR will be to accept as is. ( CLOSED ITEM )
Item 50 New NCR Forms and Conditional Releases?
J.
Schaub stated even though conditional releases were discussed during the training for the new NCR form that policy concerning the use of conditional releases has not changed.
The use of conditional releases will only be allowed in rare instances. ( CLOSED ITEM )
j Item 50 Probing the UAT.
J.
Fisher stated that the drawing for soil probing in the vicinity of the UAT has been revised to allow the RGE more discretion in directing the probing operation. ( CLOSED ITEM )
Item 50 Grillage Beam Stiffener Interference.
J.
Fisher stated that a grillage beam for pier E8 was removed because of an interference between a beam stiffener and a lateral brace created.by the location tolerance given for the Erfilage beam.
The interference was noticed on the East grillage beams and FSO will investigate the West grillage beams.
( CLOSED ITEM )
Item 50 E8 Grillage Beam Bearing Plate.
J.
Gaydos stated that the E8 grillage beam with the spherical bearing asse=bly requiring repair was repaired at the Poseyville fab shop because of better working condition's at the fab shop and available time to perform the work.
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Notsa of Daily M2sti.
f Indep2ndint AS20ssennt Of Undt,rpinning Midland Plant Units 1 & 2 Consumers Po'wer Company.
Held at Midland Site Location Midland. Michigan August 30 1983 The two parts of the assembly are a matched set by paperwork only and that the beam rework could have been resolved by adjusting paperwork. ( CLOSES:
OUT ITEM 49-31 )
Item 50 CPco. comments on Weekly Repprt,:;
J.
Schaub questioned when the open item concerning assessing training would be closed. He also asked if the Aasessment Team would review the recent Notes or Daily Meeting's to determine if some of the closed items should be open.
P.
Barry stated that the Assessment Team was reviewing training this week and should close out this item. However, training assessment is an ongoing responsibility of the team.
The Team will review recent meeting notes to determine if any closed items should be opened.
( OPEN ITEM )
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Natsa of Daily Masting
- Independent Assessment of Underpinning
. Midland Plant Units 1 & 2 j
Consumers Power Company Held at Midland Site Location Midland, Michigan August 31, 1983 No meeting was held on this day.
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r Notes of Daily Meeting
.I,ndependent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Location Midland, Michigan September 1, 1983 Present for:
Consumers Power Bechtal MPQAD Stone & Webster G. Murray J. Fisher D[Koenig J. Springer E. Cviki J. McMaster P. Barry W. Craig P. Majeski Parsons P. Parish PURPOSE This meeting is held each day to discuss items regarding the Independe'nt Soils Ascessment at the Midland Plant, Units 1 & 2.
DISCUSSION Item 50-12--E/W10 Ac tive Jacking The long term active jacking of Piers E/W10 to obtain engineering data was completed on August 30.
(CLOSED ITEM)
Item 50-13--EC10 Progress Report Concrete was placed in KC10 on August 31. This was the first use of the new concrete mix using a plasticizer.
Two NCR's were written against this concrete placement. One NCR was written because a US Testing thermometer was out of calibration.
The second resulted from adding superplasticizer to the concrete mix with 3/4 inch slump rather than 1 inch minimum. This decision was made because the concrete pour was at a critical stage and the time required waiting for a new truckload may have resulted in a cold joint in the concrete.
J. Springer suggested that smaller loads could be used in the trucks, particularly the first truck which is delayed to obtain samples for testing.
(CLOSED ITEM)
Item 50-14--Auxiliary Building Emergency Plan J.
Fisher advised that the Auxiliary Building Emergency Plan is being dc 11oped with Mergentime, utilizing the E/W8 grillage beams which should be in place by tomorrow.' (CLOSED ITEM)
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.Nctes,of Daily Meeting
' Independent Assessment of Underpinning Midland Plant Units 1 & 2 Codsumers. Power Company Held at Midland Site Location Midland, Michigan September 1, 1983 Item 50-15--Concrete Spacers J. Springer indicated that several cor
- rete bar chairs which provide the proper concrete cover were knocked out of position by personnel during concrete placement in KC10. This could lead to improper concrete cover required for the reinforcing steel. This is not a critical item in the KC10 pier since the reinforcing that was provided at this elevation was not required.
(OPEN ITEM).
Item 50-16--Soldier Pile Information l
P. Parish requested the field location and plumbness information for the soldier l
piles at the SWPS.
(OPEN ITEM)
Item 50-17--Background Engineering Information P. Parish requested copies of Figures 2, 9,11, and 12 of CPCo letter to NRC of June 7,
1982.
CPCo to furnish this information which was missing from a package of information supplied to the Assessment Team. (OPEN ITEM)
Item 50-18--Concrete Information Package i
j P. Parish requested a copy of the concrete mix design-information for the mix with the superplasticizer used in KC10.
(OPEN ITEM)
Item 50-19--WAP 50 and 51 P.
Barry indicated that the Assessment Team's review of WAP's 50 and 51 is complete.
(CLOSED ITEM)
Item 50-20--CPCo Comments on Weekly Report P. Majeski indicated that several items in recent meeting notes require additional discussion to assure complete documentation of these items.
The following five items were discussed. ( CLOSES OUT ITEM 50-11 )
Item 50-21--Clarification of Structural Backfill Specification Requirement P. Majeski indicated that the response in Item 49-6 did not seem appropriate since the specification is unclear. FSO to reevaluate.
(OPEN ITEM)
Item 50-22--Leveling Plate Pressure Crout Nipple P. Majeski indicated that the response to Item 48-25 expressing A.
Scott's concern about nipples positioned on the inside of the plate did not fully address his l
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t Notes of Daily Meeting
- Independent' Assessment of Underpinning Hi,dland Plant Units l'& 2 Consumers Power Company Held at Midland Site Location Midland, Michigan September 1, 1983 concern.-
J. Fisher indicated that at least one of the plates tested had a nipple inside and showed satisfactory results.
(CLOSED ITEM)
Item 50-23--Review of Instrumentation Data Uti.lization During Load Transfer P. Majeski asked if the evaluation of existing procedures for utilization of instrumentation data, in light of the experience to date, had been completed.
E Cviki replied that J. Darby had completed this evaluation.
(CLOSED ITEM)
Item 50-24--Need for Additional Welding Qualifications.
P. Majeski asked if FSO had completed its evaluation of the need for additional welding qualifica-tions.
J. Fisher indicated that it had not.
(OPEN ITEM)
Item 50-25--Sandblasting of BWST P. Majeski asked for the basis of the conclusion that chipping or additional sandblasting of the concrete would not be required at the BWST.
E. Cviki responded that an evaluation of the imperfections showed that 95 percent of the questionable surfaces met the requirements. He further indicated that the surface preparation is important because the design relies on the concrete to concrete bond for shear transfer.
(CLOSED ITEM)
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.s Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Location Midland, Michigan September 2, 1983 Present for:
Consumers Power Bechtel MPQAD Stone & Webster t
G. Murray J. Fisher R. Sevo J. Springer E. Cviki W. Craig J. Gaydos*
P. Majeski Parsons None
- Part Time PURPOSE This meetir.g is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant, Units 1 & 2.
DISCUSSION Item 50-26--UAT Work Progress t
Wo.rk has resumed on the platforms in the UAT's.
(CLOSED ITEM)
Item 50-27--Pier RC3 Work Progress Concrete will be placed in Pier KC3 temorrow without the use of superplasticizer. This course of action was choser. because of problems which l
occurred during placement of concrete for KC10.
After the problems are resolved, use of the superplasticized mix wi1*. be resumed.
(CLOSED ITEM)
Item 50-28--Assessment Team Evaluation of Documentation Processing W. Craig indicated that his evaluation is nearly complete and that he would be issuing a trip report listing his findings.
(CLOSED ITEM)
Item 50-29--Clarification of Structural Backfill Specification Requirement.
E. Cviki indicated that the specification will be revised and the rewording has been reviewed and was accepted by the Assessment Team.
(CLOSES ITEM 50-21)
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