ML19323H291
| ML19323H291 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 05/16/1980 |
| From: | Andognini G BOSTON EDISON CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-08, IEB-80-8, NUDOCS 8006120342 | |
| Download: ML19323H291 (2) | |
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-' ~ '.o CDCTON EDCON COMPANY acNanAt omcas saa sortaroN sT=ccr WoEToN. M ASSACNUSETTs c2199 May 16,1980
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SUPERINTENDENT BECo. Ltr. #80-86 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA.
19406 License No. DPR-35 Docket No. 50-293 Response to IE Bulletin No. 80-08
Dear Sir:
The following information is provided in response to IE Bulletin No. 80-08,
" Examination of Containment Liner Penetration Welds."
Question 1 Determine if your facility contains the flued head design for penetration connections or other designs with containment boundary butt weld (s) between the penetration sleeve and process piping as illustrated in Figure NE 1120-1, Winter 1975 Addenda to the 1974 and later editions of the ASME B&PV Code.
Response 1 Yes.
Pilgrim 1 has flued head penetration connections with containment boundary butt weld (s) between the penetration sleeve and the integral flued head's outer skirt, similar to Figure NE-1120-1(c).
i Question 2.a Determine applicability of the ASME Code including year and addenda and/or Regulatory Guide 1.19.
Response 2.a The flued head fittings (one-piece forgings) were purchased on 7/9/69.
The design, fabrication, inspection, and testing of the flued head fittings con-formed with the requirements of the ASME III, Class B, 1968 Edition, and all applicable addenda and code cases.
Installation was done during 1969 and 1970.
Regulatory Guide 1.19 was not in effect.
Question 2.b Determine type of nondestructive anminations performed during construction.
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'CI.5$dN EDCON COMPANY Mr. Boyca H. Gricr, Dirsctor May 16, 1980 Page Two Response 2.b Magnetic particle examinations per ASME Section III, Paragraph N-627, were performed during construction.
Question 2.c Determine the type of weld joint (including pipe material and size) and whether or not backing bars vere used.
Response 2.c All welds were full penetration in accordance with ASME Code,Section III, Paragraph N-1320.
Permanent backing rings as permitted by ASME Code,Section III, Paragraph N-462, were installed to allow full penetration butt-welds.
All welding procedures and welders were qualified in accordance with the requirements of ASME Code,Section IX.
The flued head fittings were made of ASTM A-105, Grade II, tested in accordance with ASME,Section III, Paragraphs N-1210 and N-1211, with charpy impact temperature under 00F.
The flued head fittings were machined in accordance with USAS B16.25 to match 4" - Schedule 80, 6" - Schedule 120, and 12" - Schedule 80, carbon steel, ASTM A-53, Grade B, seamless pipe containment penetration.
Question 2.d Results of construction nondestructive examinations; i.e.,
if repairs were required, this should be identified including extent of repairs and description of defects encountered during repair - if known.
Response 2.d Rcview of our construction records indicated that visual and MT examinations were found acceptable, and no repairs were required.
Question 3 For those facilities committed during construction to perform volumetric examination of such penetrations through SAR commitments which have not performed radiography, justify not performing radiography or submit plans and schedules for performing radiographic examinations.
-l Response 3 No commitments were made in the SAR to perform volumetric examination of such penetration weld joints.
Design, construction specifications, and drawings did not require volumetric examination of these weld joints.
We trust that this information~is responsive to your concerns.
However, if you
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have any questions, please contact us.
Very truly yours, V