ML20081A981
| ML20081A981 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 01/17/1984 |
| From: | Lucks A STONE & WEBSTER, INC. |
| To: | Cook R NRC |
| Shared Package | |
| ML20081A941 | List: |
| References | |
| NUDOCS 8403060420 | |
| Download: ML20081A981 (15) | |
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STONE & WEBSTER MICHIGAN, INC.
P.O. Box 2325. BOSTON. M ASSACHUSETTS O2107 United States Nuclear Regulatory Commission January 17, 1984 Midland Site Resident Office Route 7 J. O. No. 14358 Midland, Michigan 48640 Ref. MPF 69 Attention:
Mr.
Cook DOCKET NO. 50-339/330 MIDLt.ND PLANT UNITS 1 & 2 INDEPENDENT ASSESSMINT OF UNDERPINNING REPORT NO. 69 A copy of Lae Independent Assessment of Underpinning Weel:1y Report No. 69 for the period of January 8, 1984 through January 14, 1984 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 any questions with respect to this report please contact me at (617) 589-2067.
A.
Stanley Lucks Project Manager l0 ?) s bJ.*w ;,fyh,,)*
Enclosures ASL/pd l
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J.O. No. 14358 Midland Plant Units 1 & 2 Independent Assessment of Underpinning Weekly Report No. 69 January 8, 1984 through January 14, 1984 Personnel on Site Stone & Webster Michigan, Inc.
P.
Majeski 1/8 - 1/12 D.
Benvie 1/8 - 1/13 R.
Lykens 1/8 - 1/10 A.
Lucks 1/10 - 1/12 J.
Springer 1/11 - 1/14.
L.
Rouen 1/10 - 1/14 W.
Kilker 1/10 - 1/14 Parsons Brinckerhoff, Michigan J.
Oliveira 1/8 - 1/10 J.
Ratner 1/10 - 1/12 J.
Schraeder 1/10 B.
Metros 1/10 Meetings Attended Date Represented Purpose 1/9-1/11,1/13 Stone & Webster Daily Assessment Bechtel Team Meeting Consumers Power Parsons 1/9 Bechtel Weekly Inter-Consumers Power organizational Stone & Webster Meeting 1/12 NRC Monthly Meeting Consumers Power with NRC Stone & Webster Underpinning and Remedial Soils Activities - Construction The Stop Work Order issued October 21, 1983 continued in effect throughout the week. Rejacking and crack mapping activities were performed, as required, by the project procedures.
Assessment Team Observations The Assessment Team reviewed the Quality Control Inspection Reports completed for the crack monitoring at the Auxiliary Building and SWPS.
The review included an evaluation of the completeness and accuracy of the inspection records, verification of the inspectors' qualifications and certifications, and field verification of the mapping at randomly selected crack-mapped areas within both structures. All of the surveyed forms were properly completed, the field mapping was accurately depicted
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2 J.O. No. 14358 Midland Plant Units 1 & 2 Independent Assessment of Underpinning on the data sheets, and the inspectors
- certifications were in programmatic compliance.
The Team reviewed the CTL report (dated January 10, 1984) on the evaluation of alert level cracks reported in the Control Tower slab at El. 685'.
In the Team's opinion, the issues have been thoroughly addressed. The conclusions drawn by CTL were that the cracks were related to volumetric changes in the concrete and not movements caused by the underpinning.
However, it was recommended that Project Engineering quantify the factors that may have contributed to the crack formation and that periodic extensometer measurements be taken in the vicinity of two of the cracks.
The FSO summary report on " lessons learned" from the construction activities at the Auxiliary / Turbine building underpinning was received and reviewed by the Assessment Team. The report identified 36 areas where the original design and/or specifications / procedures have resulted in installation difficulties, unavoidable NCRs or significant time delays. Examples of the issues addressed in the report include Hilti bolts (torquing, embedment and abandonment), tolerances, welding, lagging installation, grout installation, load transfer wedges, plate bearing, and construction accessories.
Twenty five of the 36 items have to date been addressed and appropriate changes ~ made to the respective documents. These changes will apply to underpinning the remaining portions of the Auxiliary Building and the SWPS. Eleven ite=s require further action to complete. The Assessment Team considers the identification, evaluations, and incorporation of these " lessons learned" into the project documents a vital activity.
The Team believes the items identified in the report were significant in terms of impact on the work quality and/or timely completion of the work.
The Team concurs with the actions taken and changes made to date.
Work Activity Fackages The following Work Activity Package overviews are in the open response stage or have been completed during the past week.
WAP No.
Title Status 71 SWPS-Thru Anchor Open Bolt Holes Nonconformance Identification Reports NIR No.
Description Date (0pened)(Closed) 20 Concrete Admixture 12/1/83 Dispenser Calibration
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3 J.O. No. 14358 Midland Plant Units 1 & 2 Independent Assessment of Underpinning Open Items Items discussed during meetings are categorized as follows:
OPEN ITEM - An item for which an action is required. The item will remain open until the required action has been taken. Tracking is required.
CLOSED ITEM - An item, usually brought forward by the Assessment Team, that is discussed and adequately responded to.
No tracking is required.
INFORMATION ITEM - An item, brought foruard to provide general background information regarding work, such as work status or an upcoming design change. No tracking is required.
OPINION ITEM - An opinion or suggestion, given by the Assessment Team, expressing an alternate construction or quality assurance technique.
The opinion or suggestion is given as a possible alternate that may facilitate an operation.
CLOSES ITEM -XX-XX - This notation identifies an action that closes a previously identified open item. Tracking of the open item stops.
The following is a listing of all Open items from the Daily Meeting Notes with Bechtel, the Weekly Meeting with MPQAD or the text of Weekly Reports.
Carry-over items from past weeks with have been Closec this week are also listed.
Item No.
Description Closure WR 54, Pg. 3 Weld Tech Oneets Open 57-17 Wall Ties Open WR 58, Pg.2 Lack of Drawing Open References 58-3 Tubulac Steel Open Lagging 64-7 QAP Review Program Open i
64-10 Trend Analysis Open l
WR 64, Pg. 1 US Testing Open Corrective Action 65-19 Review of Phase III Open SWO f.esolution 66-50 Request for IR Open Distribution
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J.O. No. 14358 Midland Plant Units 1 & 2 Independent Assessment of Underpinning Item No.
Description Closure 69-15 Alert Level Cracks Open 69-19 Alert Level Cracks Open
$7 mkb y.:a)y Project Engineer Project Manager 4
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Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 9, 1984 Present For:
Consumers Power Bechtel MPOAD Stone & Webster G.
Murray S.
Cviki J.
McMaster P.
Majeski J.
Fisher R.
Sevo D.
Benvie J.
Gaydos R.
Lykens Parsons J.
Oliveira PURPOSE This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant Units 1 & 2.
DISCUSSION Status Items Item 69-1 Stop Work Order Update.
J.
Fisher reported that 3 QAR's (RS-00106, RS-00109, and RS-00110) had been issued as a result of Stone & Webster's (CIO) NIR 012 detailing nonconformances found during the audit of the 5 Document Control Stations associated with the Soils Remedial activities.
J.
Fisher stated that Bechtel had responded to QAR RS-00106 on 1/6/84 The remaining two QAR's will require dispositioning as part of the NIR resolution. Subsequent to satisfactory resolution of these QAR's the Soils Document Control stations will be available for overview by Stone & Webster CIO. It is not known at this time if the Management Corrective Action Request / Report issued last week to initiate evaluation of recurring document control problems will have to be resolved prior to lifting the Stop Work Order.
(INFORMATION ITEM)
Item 69 Rejacking of Piers.
i J.
Fisher reported that the average strain gage readings on Post #4 located at the W8 grillage showed a change of greater than 20%.
E.
Cviki indicated that this situation may be the result of a malfunction of one of the two gages on this post. Engineering is evaluating whether rejacking will be required.
(INFORMATION ITEM)
Item 69 Cracking or the Control Tower el. 685' slab.
E.. Cviki stated that a report by CTL will be issued this week on the cracks found in the control tower on the el. 685'alab.
E.
Cviki reported that preliminary investigation has shown the cracks have existed for some time.
(INFORMATION ITEM)
O Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 9, 1984 New Items Item 69 Upward Structural Movement Criteria.
J.
Fisher reported that as a result of last week 's meeting with the NRC, new criteria for differential upward structural movement will be issued.
These new values will be used for the interim period until the NRC has completed their review of Bechtel's proposed criteria. (INFORMATION ITEM)
Item 69 Review of Weekly Report 67 for Open Items.
Weekly Report 67 was reviewed for open items. It was determined that all open items had been previously identified.
(CLOSED ITEM)
Response Items No response items were discussed.
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Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 l
Consumers Power Company i
Held at Midland Site Midland, Michigan January 10, 1984 Present For:
Consumers Power Bechtel MPQAD Stone & Webster Parsons G.
Murray E.
Cviki J.
McMaster P.
Majeski J.
Oliveira J.
Fisher R.
Sevo W.
Kilker B.
Metros J.
Gaydos D.
Benvie J.
Ratner L.
Rouen J.
Schraeder R.
Lykens PURPOSE This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant, Units 1 & 2.
D!SCUSSION Status Items Item 69 Stop Work Order Update.
J.
Fisher reported that FSO.was preparing for a reaudit of the 5 Soils Document Control Stations by MPQAD. Once MPQAD has completed their reaudit, the 5 stations will be available for over;iew by Stone & Webster (OIO).
The latest forecasted date for lifting of the Stop Work Order is 1-16-84 (INFORMATION ITEM)
Item 69 Rejacking of Piers.
J.
Fisher reported that Pier W8 was rejacked due to a 20 percent change in stain gage readings at the columns bearing on the containment mat.(INFORMATION ITEM)
Item 69 Cracking of the Control Tower El. 685' slab.
E.
Cviki provided an update on the control tower cracks (slab El. 685'). Based on CTL's site visit on 1-6-84, they believe that the cracks: may be due to either volumetric changes, negative moments that may be due to slab fixity at the wall or settlement of the EPA prior to underpinning. (INFORMATICN ITEM)
New Items Item 69 Molten Drilling Machine Demonstration.
J.
Fisher stated that a demonstration of the Molten machine was held today.
Holes we-e drilled to demonstrate the machines expediency for removing concrete.
(INFORMATION ITEM)
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Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 10, 1984 Item 69 Implementation of Document Control changes at Spencer, White &
Prentis. (SWPS Subcontractor)
J.
Ratner inquired if revised document contral procedurt.s implemented at Mergentime were also implemented at Spencer, White & Prentis.
J.
Fisher responded that the revised document control procedures are in effect with Spencer White & Prentis. (CLOSED ITEM)
Response Items There were no response items discussed.
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i Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 11, 1984 Present For:
Consumers Power Bechte_1 MPQAD Stone & Webster Parsons R.
Wieland J.
Fisher J
.McMaster A.
Lucks J.
Ratner E.
Cviki R.
Sevo P.
Majeski J.
Gaydos W.
Kilker R.
Cleary D.
Benvie J.
Springer PURPOSE This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant Units 1 & 2.
DISCUSSION Status Items Item 69 Stop Work Order Update.
J.
Fisher reported that MPQAD is scheduled to begin their reaudit of the 5 Soils Document Control stations today. The register for one time deviations will be checked against the five stations during the reaudit.
Lifting the Stop Work Order is still projected for 1-16-84 based on Stone & Webster (CIO) completing their overview this weekend. (INFORMATION ITEM)
Item 69 Update on US Testing Corrective Action.
R.
Cleary gave a status report on corrective actions being undertaken by US Testing.
Completion schedules were provided for cross training of inspectors and occparation of work instructions. Item No. 16 (Field Document Control problems ) from the original MPQAD audit in May 1983 should be closed today. Bechtel believes that US Testing has made good progress in implementing corrective actions. However,US Testing requires the additional time to implement the items referenced above.
(WR 64 Pg.1 R1iMAINS OPEN) (INFORMATION ITEM)
Item 69 Request for IR Distribution.
Closed IR's on crack mapping were received on 1-10-84.
MPQAD is in progress of transmitting a group of closed IR's on instrumentation to Stone &
Webster.
(ITEM 66-5Q REMAINS OPEN until the Assessment Team receives the requested closed instrumentation IR's and enough additional new irs to assure the Team is on distribution) (INFORMATION ITEM)
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l Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 11, 1984 New Items Item 69 Grouting at the SWPS.
Grouting the temporary backfill material adjacent to the Service Water Pump Structure and a proposed test grouting program were discussed. The test grouting program will performed at an off site area simulating soil conditions at the SWPS. The purpose of the test program will be to establish general grout pressure and volume guidelines in order to minimize the possiblity of contamination of the dewatering wells during actual grouting.
(INFORMATION ITEM)
Item 69 Alert Level Cracks in the EPA and SWPS.
E.
Cvik1 reported that 3 alert level cracks were found yesterday-two in the West EPA on the el. 674' slab, and one on the E-1 wall in the SWPS. CTL has been notified to evaluate the nature of the cracks.
(OPEN ITEM)
'f Response Items No response items were discussed.
Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 12, 1964 No meeting was held on this date.
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Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Censumers Power Company Held at Midland Site Midland, Michigan January 13, 1984 Present For:
Consumers Power Bechtel MPQAD Stone & Webster Parsons G.
Murray J.
Fisher R.
Sevo W.
Kilker None E.
Cviki J.
McMaster D.
Benvie J.
Gaydos L.
Rouen J.
Springer PURPOSE This meeting is held each day to discuss items regarding the Independent Soils Assessment at the Midland Plant Units 1 & 2.
DISCUSSION Status Item Item 69 SWO Update.
J.
Fisher reported that the Soils Document Control Stations are ready for a reaudit by MPQAD.
Also, CP Co will make the evaluation today as to the need for a complete audit of the Field Document Control Center (Station 59) prior to lifting the Stop Work Order.
(INFORMATION ITEM)
New Items Item 69 Check for Cracks on Roof of EPA's.
E.
Cviki reported that some of the roofing on 'he east and west EPA's had been removed to check for cracking. No cracking was observed on the roof slab of the east EPA, however, small hairline cracks were found on the west EPA roof slab.
(INFORMATION ITEM)
Item 69 Engineering Evaluation of Cracking in Auxiliary Building.
J.
Springer asked for a status update on the Resident Engineering crack survey program.
E.
Cviki responded that as a result of the meeting last week with the NRC, Resident Engineering has submitted to CP Co a proposed methodology for performing an engineering evaluation of cracking in the EPA's. Control-Tower and Auxiliary Building.The evaluation would start south of the G-line in the Auxiliary Building and then proceed north of the G-line.
The cracks judged to be significiant will--be incorporated into sketches that will in-turn serve as input into a crack survey report on the structures.
(INFORMATION ITEM)
Item 19 - Alert Level Cracks in the SWPS and Auxiliary Building.
E.
Cviki reported that 3 alert level cracks were found in the SWPS on 1-11-84.
Also, one alertt level cesok.was found in the Auxiliary Building. CTL will evaluate and report.
(OPEN ITEM).
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Notes of Daily Meeting Independent Assessment of Underpinning Midland Plant Units 1 & 2 Consumers Power Company Held at Midland Site Midland, Michigan January 13, 1984 Item 69 CTL Report-Cracking on the Control Tower El. 685' Slab.
The Independent Assessment Team received CTL's report evaluating the cracks found last week on the El. 685' slab of the Control Tower.
(INFORMATION ITEM)
Item 69 NRC Request for Crack Mapping Update.
W.
Kilker reported that the NRC, in the public meeting of 1-12-84, requested that CP Co provide an update on crack mapping at the February public meeting.
In particular, the NRC is interested in diseassions on numerous alert leve.
cracks that have recently been identified and how crack map data recorded independently by Bechtel, CTL and WJE is maintained and used by I
Engineering in monitoring the structures. (INFORMATION ITEM)
Item 69 Weekly Report # 68.
Weekly Report 68 was reviewed for potential open items. No new open items were found.
(CLOSED ITEM)
Response Items No response items were discusaed.
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I Notes of MPQAD Meeting Independent Assessment of Underpinning 4
Midland Plant Units 1 & 2 Consumers Power Company i
Held at Midland Site Midland, Michigan January 13, 1984 i
No MPQAD meeting was held this week.
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