ML17296A784
| ML17296A784 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 06/25/1980 |
| From: | ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | |
| Shared Package | |
| ML17296A783 | List: |
| References | |
| NUDOCS 8007020533 | |
| Download: ML17296A784 (2) | |
Text
FINAL REPORT REPORTABLE DEFICIENCY 50. 55 (e)
ARIZONA'PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 81
@D I
Descri tion of Deficienc During a Bechtel Power Corporation audit of ITT Grinnell Corporation,
- Warren, Ohio, twelve (12) Size 81 and Size f/2, Figure 211 Sway Strut Assemblies (linear component standard supports) were found to have welds less than required by the ASME Section III Code.
XTT Grinnell Corporation Sway Struts, fabricated prior to November 15,
- 1980, had fillet weld requirements which were 1/16" undersized to ASME Section XXI Code.
Per Subsection NF, Appendix XVII, Paragraph 2452.1 and Table 2452.1-1, the fillet weld minimum requirement is 5/16".
ITT Grinnel Corporation drawings called for a 1/4" fillet weld.
The Bechtel audit revealed that the applicable supplier-drawing was revised to require the correct fillet weld; however, ITT Grinnell Corporation did not rework or preclude shipment of "in-stock" items.
Subse-quent survei'llance activity reveal'ed the subject sway struts had been delivered to the PVNGS jobsite for use in safety-related piping systems.
A total of seventeen (17) struts have been received at PVNGS, seven (7) of which were installed, that were fabricated to undersized fillet requirements.
II Anal sis of Safet 'm lications It cannot be determined without extensive analysis whether the above items, if not detected, could have resulted in a safety significant event since each sway strut installation is different.
This condition is considered reportable based on the supplier's noncom-pliance to purchase order specification requirements even after the noncomplying condition was documented in the supplier'.s facility prior to shipment.
III Corrective Action Stop Work Notice 80-SW-3 was issued to,prevent further installation of the discrepant stxuts.
A decision has been made to return the subject material to the supplier.
The project corrective action is to only install safety-related sway struts which comply with Code requirements.
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