IR 05000373/1979041
| ML19291C211 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 12/07/1979 |
| From: | Clint Jones, Williams C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19291C206 | List: |
| References | |
| 50-373-79-41, 50-374-79-27, NUDOCS 8001230141 | |
| Download: ML19291C211 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-373/79-41 50-374/79-27 Docket No. 50-373; 50-374 License No. CPPR-99; CPPR-100 Licensee: Commonwealth Edison Company Post Office Box 767 Chicago, IL 60690 Facility Name:
La Salle County Station, Units 1 and 2 Inspection At:
La Salle Site, Marseilles, Illinois Inspection Conducted: November 14 and 15, 1979 0d U
/J 7-7f Inspector:
C. E.
ones
[J Q Q&Q, -
Approved By:
C. C. Williams, Chief 4/q/7#f Projects Section 2
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Inspection Summary
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Inspection on November 14 and 15, 1979 (Report No. 50-373/79-41; 50-374/79-27)
Areas Inspected: Observed welding in progress on modification of the N-2 recirculating inlet nozzle. Closed ene previously unresolved item and one item of noncompliance. Reviewed the status of construction of the safety related beating, ventilating and air conditiong (HVAC) system and discussed proposed system tests. The inspection involved a total of 17 inspector-hours by one NRC inspector.
Results: No items of noncompliance or deviations were identified.
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DETAILS Persons Contacted Principal Licensee Employees
- L.
J. Burke, Site Project Superintendent M. J. Callahan, QA Engineer
- D. J. Dierbeck, Engineer, Station Construction
- G. E. Groth, Engineer, Station Construction
- T. E. Quaka, QA Supervisor
- D.
J. Skoza, QA Engineer E. R. Wendorf, Engineer, Station Construction
- R. T. Rose, Project Structural Engineer B. J. McAndrew, Engineer, Station Construction
- Denotes personnel attending exit interview.
Licensee Action on Previously Identified Items (0 pen) Unresolved item (373/79-12-01; 374/79-12-01):
Adequacy of a perfor-mance test to prove pump reliability. Sargent & Lundy Engineers, the AE, have analyzed the problem and concluded that specifically~ developed and performed tests adequately determine the reliability of these pumps. The engineers have developed these reliability tests for these pumps but the testing has not been completed.
(Closed) Noncompliance (373/79-13-05): Two safety related electrical panels No. IPL27JA and No. IPL27JB) were mounted on a non safety related concrete block wall. The inspector reviewed drawing IE-1-3485 which identified the original installation. Revision W stated arrangement of these electrical panels was now shown on Revision T, Drawing 1-E-1-3474.
Both drawing revisions were dated July 30, 1979.
In addition, the inspector observed these panels mounted on a reinforced concrete wall located at elevation 786' between J - L and 10 - 11 lines and verified the arrangement on Revision T, Drawing 1-E-1-3474.
(Closed) Unresolved item (373/79-13-15): Audit of Zack Company work perfor-mance on installation of hangers for the safety related heating, ventilating and air conditiong (HVAC) systems and of proper instruction of inspection personnel.
In compliance with the corrective measures proposed for this problem, CECO's QA Department performed an audit of Zack Company's shop relative to hangers.
The results were documented in Audit Report No. 79-13-15.
During the audit it was determined that although the appearance of the shop welds was' good, the convexity of these welds exceeds the limits for convexity permitted by the AWS Code.
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Conam was instructed to inspect all HVAC hangers installed prior to June 25,
1979, and all hangers subsequently installed. Effective since June 25, 1979, Conam has performed 100% surveillance of Zack's final welds on hanger installations.
Shop inspectors were relieved of their inspection responsibilities and were retrained and requalified in their duties prior to their resumption of inspet-tion duties on August 24, 1979.
Zack's field inspectors were relieved of their inspection responsibilities on June 28, 1979. These personnel were retained on the payroll, retrained and requalified in their inspection duties by Zack's QA manager.
In addition, an effort has been made to inprove the welding configuration.
The standards have been revised and drawings M-1538 sheets 1 and 2, and M-1537 sheet 1 of 9 have been revised to clarify fabrication details. This item is considered closed; however, a new unresolved item (373/79-41-01)
will remain open until hangers welded and inspected to the revised standards have been observed.
Program or Functional Areas Inspected 1.
Heating Ventilating and Air Conditioning (HVAC)
The status and testing of the HVAC was discussed. The licensee indi-cated the following items were included in the work to be completed.
Balance the system air flow to specification requirements using a.
substitute material to duplicate the pressure drop from the filters to be installed later.
b.
Measure the fan output and adjust as necessary to meet specified output.
Measure the vibration in the system components of the balanced c.
system.
d.
Complete the final filter efficiency tests.
The licensee stated that certain portions of the venti 11ation duct would be tested during construction to determine leakage rates.
Specific mini-mum leakage rates are specified for safety related sections of duct work.
Surveillance of the HVAC will continue as a function of the inspection program pending completion and testing of the system.
2.
Recirculation Nozzle Modification The licensee reported that the recirculation nozzle modification was complete for Unit 1.
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The inspector observed a safe-end to nozzle weld (an inconel weld) in
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progress on the N-2 recirculation nozzle. There are three welds included in this nozzle modification. These are No. 1, thermal sleeve to stub tube, a stainless steel weld:
No. 2, thermal sleeve to safe-end, a stainless steel weld: and No. 3, safe-end to nozzle, and inconel weld.
All welds are automatic and inspection indicated all three had a good appearance.
In addition, those portions where grinding on the crown was complete the surface was smooth and the weld zone was visible with difficulty.
On No. 3 weld the filler wire was stainless steel ER308L SFA 5.9 Lot 1121 Heat No. 376411.035 inch diameter.
The inconel filler was ERNiCr3 SFA 5.14 Heat No. C4235N382,.035" diameter.
Welders I.D.'s were I.D.-4 and D.G.-6 qualified to #3 Welding Procedure, Detailed Welding Procedure Specification No. WPS 43.2.4.5 Revision 2, dated May 30, 1979.
Application: For automatic welding using GTAW process within above limitations.
No items of noncompliance or deviations were noted.
Unresolved Matters Unresolved matters are matters about which more information is required in order to ascertain whether they are acceptable items, items of noncompliance, or deviations. An unresolved item disclosed during this inspection is discussed in Licensee's Action on Previously Identifiei Items, item 3 of this report.
Exit Interview The inspector met with licensee representatives (denotes under Persons Contacted) on November 15, 1979. The inspector summarized the scope and findings of the inspection. The licensee acknowledged the findings as reported.
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