IR 05000373/1979036
| ML19211D203 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 11/22/1979 |
| From: | Naidu K, Neisler J, Williams C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19211D201 | List: |
| References | |
| 50-373-79-36, 50-374-79-25, NUDOCS 8001170040 | |
| Download: ML19211D203 (9) | |
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U.S. NUCLEAR REGULATORY COMMISSION
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OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-373/79-36; 50-374/79-25 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, IL Inspection Conducted: October 23, 1979 f
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J. H. Neisler
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K. R. Naidu
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C. M. Erb
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Approved By:
C. C. Williams, Chief
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Projects Section 2
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Inspection Summary Inspection on October 23, 1979 (Reports No. 50-373/79-36; 50-374/79-25)
Areas Inspected: Rip rap installation on cooling lake auxiliary as spillway and rip rap repairs on lake level. Followup on open items identified during previous inspections.
Inspection at Sargent Industries, El Segundo, California relative to KWU quencher fabrication. Observation of work on recirculation system modification. This inspection involved a total of 34 inspector-hours by three NRC inspectors.
Results: No items of noncompliance or deviations were identified during this inspection.
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DETAILS
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Persons Contacted Principal Licensee Employees L. J. Burke, Site Project Superintendent R. T. Rose, Project Structural Engineer T. E. Quaka, Site QA Supervisor M. J. Morris, SNED
- L. Tapella, QA Engineer
- G.
E. Groth, Station Construction B. J. McAndrew, Lead Mechanical Engineer
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W. Gieseker, Station Construction J. Dierback, Field Engineer D. J. Skoza, QA Engineer Contractor and Other Personnel E. R. Weaver, Senior Structural Project Engineer, Sargent and Lundy D. Siefken, Supervisor, Geotech Division, Sargent and Lundy M. R. Dougherty, QA Supervisor, Walsh Construction Company J. Daivalo, QC Supervisor, CONAM A. Rubino, Inspector, Morrison Construction Company T. Mulligan, Welding Supervisor, General Electric Company
- Denotes those persons not attending exit interview.
Licensee Action on Previously Reported Items (Closed) Unresolved item (373/78-31-02; 374/78-22-02):
Interpretation of S&L Specification J2533 relative to potential harmful effects of grease leakage into concrete at varying temperatures. The architect engineer, S&L, has deleted the section of the specification relative to grease leakage since no detrimental effects on concrete from varying temperatures and grease leakage have been established. This item is closed.
(Closed) Noncompliance (373/78-06; 374/78-05):
H. P. Foley Procedure QCP-5, Revision 3, states that " Nelson" studs should conform to ASTM-A108, but does not specify that the grade should be between 1010 and 1020 as stipulated in the AWS D1.1-75 code.
H. P. Foley Procedure QCP-5, Revision 4, states that " Nelson" studs shall conform to ASTM-A108 grade between 1010 and 1020.
This item is closed.
(Closed) Noncompliance (373/78-06; 374/78-05):
H. P. Foley welding inspectors did not identify with a distinguishing mark all parts of joints that were inspected and accepted.
Section 3.6 of H. P. Foley Procedure QCP-5, Revision 4 now states that the inspector will indicate a-well acceptable by placing a yellow lumber crayon mark as close to the weld as practical.
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(Closed) Unresolved item (373/79-13-10)
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Functional or Program Areas Inspected Rip Rap Installation on Auxiliary Spillway The RIII inspector accompanied two inspectors from NRC/NRR/IMB in the inspection of rip rap placement on the cooling lake auxiliary spillway.
A report of this inspection will be submitted by NRR/IMB.
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Section I
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Prepared by K. R. Naidu Reviewed by D. W. Hayes, Chief Engineering Support Section 1 Persons Contacted Sargent Industries, El Segundo, California, (Sargent).
E. J. Rendell, Manager of Engineering R. M. Rechtenwald, Vice President and General Manager K. Whelpy, Engineering Supervisor H. Whelpton, Project Engineer Commonwealth Edison Company (CECO)
G. Marcus, Director, Quality Assurance Construction This report includes the inspections conducted by K. R. Naidu of this office at Sargent Industries, El Segundo, California and your corporate office on July 3, 5 and September 25, 1979, respectively.
Introduction Sargent Industries, El Segundo, California fabricates the
'T' quenchers for La Salle Units 1 and 2.
The
'T'
quenchers for the Main Steam Relief Valves (MSRVs) were designed by Kraft Werke Union (KWU) West Germany for use in conjunction with Boiling Water Reactors installed in West Germany.
Sargent Industries fabricated the
'T' quenchers under the KWU license.
Sargent and Lundy in Design Specification #DS-MS-02-LS for the MSRV quenchers covered the design requirements.
Inspections were performed at Sargent Industries and subsequently at CECO to ascertain whether the design, manufacture and testing, vendor surveillance and documentation met the CECO QA program requirements.
1.
Review of Specification #DS-MS-02-LS The inspector reviewed the above specification and verified compliance with the following requirements:
Paragraph 111 of the specification requires a hydrostatic test a.
on each quencher in accordance with ASME Section 111 code after all welding is performed but before drilling vent holes. Review of the Sargent Industries test procedures #P1079T including cali-bration requirements for the test pressure gauge indicates compli-ance with ASME Section III code requirements.
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b.
Paragraph 408.2.g requires three 3/4" threaded tapped holes to use for the installation of pressure and temperature transmitters.
Drawings 107900 and 107700 reflect this requirement; the number of holes was increased to four after a design change.
Paragraph 408.3.C requires a 1/2" diameter NPT hole and plug c.
for use in the field to leak test the quencher support to the base plate weld.
Drawings 1077001 and 1079001 reflected the 1/2" diameter hole; the plug for the hole was not listed on the drawing. The project engineer concurred with the inspector's finding; the drawing was revised prior to the conicusion of the inspection to incorporate the plug in the specification of materials.
d.
Paragraph 3.3.13 requires all austenitic stainless steel to be solution annealed - heated to 1099 F or higher and holding for an appropriate time, subsequent cooling from annealing temper-ature to below 800 F so as to prevent carbide precipitation in the grain boundaries.
Th inspector reviewed typical Material Certificates supplied by Youngstown Welding & Engineering Company and Eastern Stainless Steel Company and determinthat specification requirements relative to solution annealing between 1099 -2050 F, holding time I hour, fifteen minutes and water quenching to below 800 F were met, The following packaging and shipping procedures were reviewed e.
to ascertain compliance with paragraph 113 of the specification.
(1) #P1079PG1 for quencher sliding joint pipe assembly (2) #P1079PG2 for quencher body assembly (3) #P1079PG3 for quencher support base assembly The inspector determined that the specification requirements were translated in the above procedures.
f.
The following Weld Procedure Specifications (WPS) were reviewed for compliance with ASME Code Section IX and determined acceptable.
Procedure Qualification Tests were performed by Durkee Test Laboratories and were acceptable.
(1) #PW001 (submerged arc) for P8 - P8 material (2) #PW006 (shielded metal arc stick) P8 - P8 material
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(3) #PW007 (automatic tungsten inert gas) P8 - P8 material
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(4) #PW008 (manual tungsten inert gas) P8 - P8 No items of noncompliance were identified.
2.
Observation of Work Activities The inspector observed the work in progress and determined the following:
Travellers used for the various stages manufacturing indicated a.
QC inspections were being performed as indicated by the sign offs.
b.
Material was identified indicating their status.
Drilling of holes on the crossarms of one
'T' quencher had been c.
completed and steps were being taken to package and ship the component.
No items of noncompliance were identified.
3.
Review of Vendor Audit The inspector reviewed the following documents at the CECO Corporate Offices to ascertain whether vendor surveillances were performed to assure that the "T' quenchers were being manufactured to meet the specification requirements.
Audit Report #1-79-66 performed by CECO on Sargent Industries, (SI) El Segundo, California on September 5 and 0, 1979. A checklist consisting of 14 questions approved by the Director of Quality Assurance for Engineering and Construction was used.
The scope of the audit covered the following attributes:
Verification that the latest revision of the SI QA Manual was a.
being used.
b.
Review and approval cycle for engireering documents such as change in Hydrostatic Test Pressure and stress analysis calculations.
Review of qualifications of individuals performing welding, c.
Non-Destructive Examinations and Quality Control Inspections.
d.
Adequate control of tools and gauges including calibration.
Adequacy cf audits and corrective action taken on audit findings.
e.
The following two findings were identified:
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f.
Inadequacy in training and qualification of Quality Control Inspectors.
g.
Qualificatior, of SI auditors did not meet ANSI 45.2.12 requirements.
The following observation was made:
h.
It could not be determined whether the stress analysis calcula-tions on the La Salle Station quenchers was reviewed by an individual other than the designer.
SI was requested to respond to the audit findings by October 5,19.
Relative to audit finding
'f', CECO named two individuals whose certifications appeared to be acceptable and requested SI to designate only those individuals to perform inspections on La Salle Station quencher activities.
No items of noncompliance were identified.
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Section II
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Prepared by C. M. Erb Reviewed by D. H. Danielson, Chief Engineering Support Section 2 Licensee Action on Previous Inspection Findings (Closed) Usage of Carbon Steel Floor Plates to German Quenchers No.
50-373/ 78-31-01, No. 50-374/78-22-01: The licensee has a letter dated May 30, 1979 from S&L which states that a Carboline Zine coating will be used on the floor embeds for the quenchers.
In addition, the plates have 1/8 inch additional thickness as corrosion allowance.
This item is closed.
Functional or Program Areas Inspected 1.
Recirc N2 Welding in Unit 2 GE Installation and Service Engineering (I&SE) are making the welds of the safe end to nozzle and the internal welds of the thermal sleeve to the jet pump riser. The safe ends are 316L.
Removal of the old safe ends is proceeding and remachining of the nozzle is being done. Dimetrics Automatic welding equipment is being used.
The internal weld #1 which was examined had been PT examined and was acceptable. The two Dimetrics Power Sources were set up on a secure foundation several feet below the nozzles and were enclosed by boxes with padlocks which could be secured when equipc.ent is not in use.
2.
Elbow in N2 System Safe End to Riser - Unit 1 Morrison Construction Company (MCCO) are making two welds, safe end to pipe and pipe to pipe which connects the N2 safe end through an elbow to the inlet riser.
The elbows being installed in Unit I were procured from TVA and the elbows for Unit 2 are being reworked from Unit 1 elbows.
Three of the 20 welds to be made on Unit I were completed and radi-ography for welds No. W56M, W57M and W59M was examined.
CONAM performed the RT examination to procedure RT-1-NP, Rev. 5.
Four exposures were made and the pipe weld size was 12" x.575 thick.
Weld W57M has a weld layer alongside the weld because of a slight under thickness condition.
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Any indiations found were identified on the Reader Sheet and the welds were of acceptable quality. The ASME Code of 1974, Summer
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Addenda is applicable to these welds.
3.
Cracking Problem on Structural I-Beams, 50.55(e) Item Steel plates are welded to the top of short I-beams which support the steel grating above the diaphragm floor. Examination revealed a cracking problem in the weld area. A chemical analysis of 1" cracked plate showed: Carbon 0.50%, manganese 1.50% which falls in an AISI 1157 grade of steel.
Since the intended application was A36 plate steel, which has 0.25% maximum carbon, there is plainly mixed steel.
InRyko who supplied the steel are goind through records and endeavoring to establish the possible extent of the mixup.
CECO submitted a 3/4 inch plate for analysis to determine of this thickness were involved in the mixed steel problem. Ceco are considering a hardness test or possible sparking to determine the number of high carbon cap plates that must be removed.
4.
Observation Welding in Scram Discharge System - Unit 1 Reactor Controls Inc. were welding 8" carbon steel pipe which makes up the Scram Discharge for the Control Rod Drives. The welder had stamp P-5 and was qualified for the T.I.G. root and the SMAW part of the weld. The welds were ground and had an acceptable appearance.
The spools were fabricated by RCI in Waterford, Connecticut and were ground to ISI requirements.
Exit Interview The inspectors met with licensee representatives (denoted under Persons Contacted) on October 23, 1979. The inspectors summarized the scope and findings of the inspection. The licensee acknowledged the findings as reported.
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