IR 05000461/1981012
| ML20009B580 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 07/08/1981 |
| From: | Livermore H, Reimann F NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20009B578 | List: |
| References | |
| 50-461-81-12, NUDOCS 8107160319 | |
| Download: ML20009B580 (6) | |
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U.S. NUCLEAR REGUIATORY COMMISSION
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OFFICE OF INSPECTION AND ENFORCHEIT
REGION III
Report No. 50.-461/81-12 Docket No. 50-461 License No. CPPR-137 Licensee: T11%ois Power Company 500 South 27th Street Decatur, IL 62525 Facility Name:
Clinton Power Station, Unit 1 Inspection At:
Clinton Site, Clinton, IL Inspection Con et : May 2 through 31, 1981 av(
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d1 <h /k8I Inspector:
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Approved- :
F. Reimann, Acting Chief
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Projects Section 1 C
,#/M C,/@ff Inspection Summary Insnection on May 2 through May 31, 1981, (Repcrt, No. 50/h61/81-12)
Areas Inspected:. Routine, Resident Inspector's in 3pection of construction activities including installation of rebar and imteds, mechanical equipment installation, drawing control, concrete placement, and installation and welding of safety-related pipe. The inspection involved a total of 47 inspectcr-hours onsite by one NRC inspector including 0 inspector-hours onsite during off-shifts.
Results: Of the areas inspected, one item of noncompliance was identified.
8107160319 810713 PDR ADOCK 05000461
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DETAIIS 1.
Persons Contacted Principal Licensee Enployees
- J. O. McHood, Vice President, Project Manager, Clinton
- G. M. Brashear, Site Manager, Clinton
- R. J. Canfield, Director-Construction A. J. Budnick, Director-QA
- E. E. Connon, Assistant Director-Construction
- L. W. Dosier, Assistant Director-Construction
- D. E. Korneman, Construction R. W. Folck, QA Specialist -
J. S. Spencer, Director-Engineering R. Weber, QA Engineer R. Becker, QA Consultant J. Geier, Manager-General Engineering
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L. Calhoun, Electrical Construction B. Spicer, QA Consultant
- M. C. Hollon,' Supervisor-QA F. G. Schwarz, Supervisor C/S Construction D. J. _ Lindstrom, QA Engineer
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- G. N. Motsegood, Engincering
- R. Morgenstern, QA Specialist Baldwin Associates
- J. W. Smart, QA Manager
- T.-Selva, Manager, Quality and Technical Services
- W. H. Harrington, Project Manager _
- J. E. Findley, Project Engineer W. O'Brien, QC Piping
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- H. R. Swift, Assistant Project Engineer l
- L. A. Gelbert, QC Manager G. B. Browne, Manager, Subcontracts 3. Curb', Asst. Project _ Manager
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- G. Chapman, Manager, Technical Services j
T. G. Yearick, Assistant Project Manager I
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M. J. King General Electric J. L. Dempster, Site Manager S. G. Hall, Quality Control l
Other staff and personnel were contacted during the reporting period.
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Functional or Program Arems Inspected a.
Plant Tours One or more plant areas were toured several times during the reporting period to observe general construction practices, area cleanliness and storage condition-of equipment, piping, and electrical equipment.
b.
Containment Rebar, Cadwelds and Imbeds The Resident Inspector performed a random sample inspection of rebar and cadwelds installed in the exterior containment dome.
The following conditions were noted: rebar 'd.e fastenings were secure; rebar to forms edge distance was satisfactory; individual cadweld inspections of filler hole and end sleeve area voids and slag inclusion were satisfactory; and vertical cadweld sleeves, when installed in the horizontal position,had the necessary wire vents installed in the sleeve ends.
A surveillance was also performed on four lx24x24 gas boundary imbeds while in the process of being installed on the exterior containment dome. The following conditions were noted:
stud flashing was continuous and unbroken; a random number of studs were bent as required; replacement stud fillet welds appeared satisfactory and the welder was qualified to the process, elec-trode, and material thickness.
No items of noncompliance or deviation were identified.
c.
Concrete Placement During the reporting period, the Inspector performed surveillance of the following concrete pours:
(1) Radwaste Building, 737 level, noor slab.
(2) Containment Dome (exterior). Traveler 1564, pour CTW-27, 240 cubic yards.
(3) Containment Dome (exterior). Traveler 1565, pour C'Tw-28, 217 cuhtc yards.
The following conditions were noted:
(1) The travelers were complete and signed off by all parties prior to the concrete pours.
(2) Concrete test results were within specification limits.
(3) Roving surveillance by Quality Control was adequate and satisfactory.
(4) Placement areas were clean of debris. Rebar tie fastenings were secure.
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(5) Placement crew numbers were satisfactory. Concrete delivery and placements were satisfactory. Consoli-dation technique was satisfactory.
(6) Quality Control concrete pour and drawing checklists JV 525, 526, 506, and 191 were complete and signed.
No items of noncompliance or dev4.ation were identified.
d.
Fabrications of Safety-Related Piping Systems During the reporting period, the Inspector observed work including hand,, protection, inspection, and welding of the following safety-related pipe:
Reactor Core Isolation Cooling 1-RI-3-1B 1-RI-4-1-2-Q1 1-RI-3-1A For each of these welds one or more of the following fabrication activities was observed. Handling and protection of piping and partially completed welds were satisfactory. Purge gas was correctly used when applicable. The weld area was free of con-taminants. The joint fit-up dimensions were within procedural requirements and the welders were certified as qualified for the thickness and the process specified to be used for welding the pipe joint. Technique and weld results appeared to be satisfactory.
No items of noncompliance or deviation were identified, e.
Drawing Control and Documentation Review During the inspection period, 12 drawings were checked in the Power Block area to determine if drawings of the latest revision were being used in the construction effort. It was found that all drawings were of the correct revision and indicated the latest outstanding applicable nonconformances and change notices on the face of the drawing. The inspector reviewed numerous licensee and contractor procedure revislans, field change requests and noncon-formance reports in order to monitor the contractor's system for implementing changes, and to monitor the daily ongoing plant construction activities.
No items of noncompliance or deviation were identified.
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ECCS Pump Columns E12-C002 A, B, C, E21-C001, and E22-C001 During preparation for the installation of the subject pump c'; tmns, numerous visual discrepant conditions were recorded by inspection reports 4518 and 4452. The more notable discrepancies were poor welding, incomplete weld repair, and visible lap joints in the column pipe. The Nonconformance Report disposition provided-4-
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acceptability by virtue of General Electric's statement that the pump internal components were noncode, therefore, no acceptance requirements are available and no inspection is required. The Resident Inspector took exception to the dis-position. Taking into account the nature and location of the discrepancies, the Resident Inspector requested the licensee to address the following question: Will the pump perform its intended residual heat removal (RHR) function during a Seismic Category I Event? The licensee has responded by requesting written assurance from the pump manufacturer, Byron Jackson. This is considered an Unresolved Item (50-461/
81-12-01).
No items of noncompliance or deviation were identified.
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3HR Pump Column Installation The installation of Residual Heat Removal (RHR) Pump Column Assembly (1E12-C002B) in the suction barrel was performed per Traveler E12-005. Nineteen Quality Control' hold points had been deleted from the traveler:
including those relating to the paragraphs on attaching lifting device, rigging,'and lifting.
Step 110, requiring use of procedure JIM-P012, rigging diagram, had been deleted from the traveler. The column pipe flanged bolted to become one unit assembly. The rigging, handling, upending, and column assembly installation was performed at the discretion of the craft foreman. The lift was a complex, three point rig, with a complete weight and direction transfer in midair due to ceiling height limitations. The Byron Jackson Technical Manual did not address this abnormal configuration.
There were no detailed instructions or drawings available controlling the lift. The responsible Baldwin Engineer was not present moni-toring the lift operation to prevent possible damage due to angularity or weight changes during the operation.
In summation, Quality Control had been deleted, engineering was not present, the P012 lift diagram had been deleted, and there were no applicable written detailed procedures or instructions available for the rigging, handling, and installation of the RHR Eamp Column Assembly.
This item is considered to be in nonconformance with the requirements of Criterion V of 10 CFR 50, Appendix B, (50-461/81-12-02).
h.
Team Inspection Support A special team of NRC inspectors performed a trial inspection program at the Clinton site from February 9 through February 27, 1981. Tbc Resident Inspector continues to perform followup inspection activities in connection with the team findings. A followup inspection was performed onsite by team member inspector, I. Yin. The Resident Inspector performed staff support activities during and after this inspection.
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Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items or items of noncompliance or deviations. Unresolved items disclosed during this inspection are discussed in Paragraph 2f.
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Exit Meetings The Resident Inspector attended exit meetings conducted by Region III inspectors H. Wescott, C. Erb, C. Weil, and W. Key on May 15, 20 and 29, 1981. The Resident Inspector met with licensee representatives (denoted.under Persons Contacted) on May 4, 11, 26 and 29, 1981. The inspector summarized the scope and findings of the inspections performed.
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