ML19224C680
| ML19224C680 | |
| Person / Time | |
|---|---|
| Issue date: | 04/26/1979 |
| From: | Ellershaw L, Hunnicutt D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML19224C676 | List: |
| References | |
| REF-QA-99900363 99900363-79-1, NUDOCS 7907060046 | |
| Download: ML19224C680 (3) | |
Text
U.S. tillCLEAR REGULATORY COMMISSIO 1 0FFICE OF IflSPECTI0:1 AtlD EilFORCEMEtlT REGI0tl IV Report tio. 99900363/79-01 Program rio. 51400 Company:
B-Line Systems, Inc.
509 W. Monroe Street Highland, Illinois 62249 Inspection Conducted: March 29, 1979 Inspc.ctor$
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hl.E.Ellershaw,PrincipaaInspector
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Vendor Inspection Branch
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Approved by:
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- 9. M. Hunnicutt, Chief, ComponentsSection II Vendor Inspection Branch
- Summary, Special Inspection on March 29, 1979 (99900363/79-0:
Areas Inspected:
Follow-up'on a 10 LFR 50.55(e) Construction Deficiency Report relative to failed resistance welds on strut material.
The inspection involved eight (8) inspector hours by one fiRC inspector.
Results:
In the one area inspected, no deviations or unresolved items were identified.
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. Details Section (Prepared by L. E. Ellershaw)
A.
Persons Contacted W. Corray - Vice President, Production T. Gold, Sr. - President T. Gold, Jr. - Vice President, Sales C. D. Hays - Material Manager K. Radner - Manager, Engineering B.
Introduction Pennsylvania Power and Light Company (PP&L) documented a reportable deficiency under the provisions of 10 CFR 50.55(e), to B. H. Grier, Region I, dated April 26, 1978, regarding inadequate spot welding of strut material used in field fabr;cated supports for safety related electrical raceways, HVAC ducts, and instrumentation panels (PP&L Reference No. PLA-249), as produced by B-Line Systems, Inc. (C-L),
Highland, Illinois.
C.
Follow-up on 10 CFR 50.55(e) Report 1.
Objectives The objectives of this follow-up inspection were to ascertain that an evaluation of the condition had been performed, including making an assessment of generic implications, and that responsi-bility for effecting corrective action and preventing recurrence had been assigned.
2.
Method of Accomplishment a.
Review of 10 CFR 50.55(e) Report.
b.
Review of Gas Metal Arc Welding (GMAW) Procedure Specifica-tions - WPS-2, "Pregalvanized Mild Steel, and WPS-3, " Mild Steel."
c.
Review of drawings 1-B-2600, "B-11A Channel Combination,"
revision B dated November 8,1978,1-B-0010, "B-12A Channel Combination," revision C dated November 8, 1978, and 1-B-0042, "B-22X Channel Co abination. revision D dated October 15, 1978.
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Observation of welding equipment anc testing equipment.
e.
Discussions with cognizant personnel.
3.
Findings Prior to the detection of failed spot welds at the job site (Susquehanna), the strut material had been purchased as standard off-the-shelf items, with no formally imposed quality control requirements relative to testing.
The present test criteria is a B-L requirenent, limited to a chisel test, and there are no customer imposed tests.
B-L's acceptance criteria has been based upon the qualification of GMAW weld procedures.
It was determined that the last mill galvanized material, resis-tance welded only, was fabricated approximately four (4) years ago.
All mill galvanized material fabricated since, is resistance welded and GMA weided.
B-L stated that if mill galvanized material, resistance velded only, showed up at a site, then it was not pro-cured directly from B-L, but from a distributor or material sup-plier.
However, as a result of the 10 CFR 50.55(e) Report, Bechtel Power Corporation (BPC) and B-L are in the discussion and review stage regarding BPC's Specification 8S56-C-92, revision 2 dated October 10, 1978, " Technical Specificatica For Furnishing And Delivering Of Spot Welded Strut Material For The Susquehanna Steam Electric Station Units 1 And 2."
This specification has provisions for conducting shear tests with the stated acceptance criteria being equal to or greater than 3200 pounds and with an average ultimate failure load for all spot welds in all samples from a given lot being greater than 3400 pour.ds.
B-L has devele,ed test fixtures to accomodate the shear test requirements as required by Specification 8856-C-92.
D.
Exit Interview The scope and findings of this 10 CFR 50.55(e) follow-up inspection were summarized with C. D. Hays, Material Manager, who acknowledged the comments relative to the findings.
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