ML19327A166
| ML19327A166 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/09/1980 |
| From: | Woolever E DUQUESNE LIGHT CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-08, IEB-80-8, NUDOCS 8008010221 | |
| Download: ML19327A166 (6) | |
Text
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'Af (412) 456-6000 435 Seam Avenue 737'*
July 9, 1980 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 ATTENTION:
Mr. Boyce H. Grier, Director
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 IE Bulletin No. 80-08
" Examination of Containment Liner Penetration Welds" Gentelmen:
IE Bulletin 80-08 raises questions with regard to the examination of containment liner penetration welds. The following items are in response to these inquiries:
Item 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
The Beaver Valley Power Station - Unit No. 2 has the flued head to sleeve weld similar to that illustrated by Figure NE-1120-1, Winter 1975 Addenda to the 1974 and later editions of the code.
The configurations are shown by Attachment A to this response.
Item 2.
If an af firmative answer is reached for Item 1, determine the following:
Item 2a. Applicability of the ASME Code including year and addenda and/or Regulatory Guide 1.19.
Response
The applicable ASME codes for the penetrations are ASME II,
- III, V,
and IX 1971 edition through and including the 1972 Winter Addenda. These codes are applicable only to the extent specified in the governing contract specification 2BVS-65,
" Specification for Reactor Containment Liner and Mat Embed-ments." The ASME III Code was used as a guide in the selection of material and fabrication of the steel containment liner for Unit 2.
8008010 2.~2 A
Mr. Boyce H. Grier, Director Page 2 The applicable Regulatory Guide 1.19 (Safety Guide 19) is Revision 1 dated August 11, 1972, per the BVPS-2 PSAR response described by Section 1.4.3.19.
Item 2b.
Type of nondestructive examinations performed during construc-tion.
Response
The nondestructive examinations performed during construction were visual, magnetic particle or liquid penetrant, and leak tightness tests.
These tests were performed on the weld surface.
Failure to perform volumetric examination by radio-graphic examination was reported to the NRC by Significant Deficiency 79-04, Mr. E. J. Woolever, Vice President, Duquesne Light Company to Mr. Boyce H. Grier, Director Region 1, USNRC, January 3,
1980, " Radiographic Examination of Flued Head Penetration-To-sleeve Welds."
Item 2c. Type of weld joint (including pipe material and size) and whether or not backing bars were used.
Response
The weld joint configurations are shown by Attachment A to this response, with the pipe materials and size shown by Attachment B to this report. Backing bars were used on all joints that are applicable to IE Bulletin 80-08.
Item 2d.
Results of construction nondestructive examination, i e.,
if repairs were required, this should be identified ir.clud ing extent of repairs and description of defects encountered during repair, if known.
Response
See response to Item 3.
Item 3.
For those facilities comicitted during construction to perform volumetric examination of such penetrations through SAR com-mitments which have not performed radiography, justify not performing radiography or submit plans and schedules for performing radiographic examinations.
Response
The contractor is presently performing radiograpt ic examin-ations, with 13 of 15 penetrations applicable to 80-08 com-pleted. Repairs will commence upon completion of radiographic examination of the remaining penetrations.
Repairs are ex-pected to be completed by January 1, 1981.
Mr. Boyce H. Grier, Director-Page 3 l
If you have any questions concerning this response please contact my office.
DUQUESNE LIGHT COMPANY i
By E. D. Woolever Vice President Attachments cc Mr. V. Stello (15) i-4 s
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ATTACHMENT B PENETPATION PIPE SIZES AND MATERIALS' Pen.
-Pipe No.
Size Sch.
Matl.
Size Sch.
Matl.
28
' ;8-80S TP 304~
2 40S TP 304 SST SST 39 12' XST TP 304 2.1/2 160S TP 304
- (Note 1)
SST SST 40 12 XST TP 304 21/2 160S TP 304
- (Note 1).
SST SST 41 12 XST TP 304 21/2 160S TP 304 (Note,.1)
160S TP 304 SST SST 52-8 80S TP 304 2
8 80 CS 3/8*
80 CS 3/8*
80 CS 3/8*
.1 1/4 In Wall CS 32 1/2 1 1/4 In CS Wall 74 45 1.1/4 In Wall CS 32 1/2 1 1/4 In CS Wall 75 45
.1.1/4 In Wall CS 32 1/2 1 1/4 In CS Wall 76 28.
- Multiple Penetration with 4 3/8 In Dia. Pipes 9
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P, ATTACHMENT "B" (Continued)
Pen.
Sleeve Pipe No.
' Size Sch.
Matl.
Size Sch.
Matl 77' 28 5/8 In Wall TP 304 16 80 CS SST
SST 97 8
80 CS 3/8*
80 CS 3/8*
80 CS l/4**
80S TP 316 SST 118 16 XST CS 3/4***
80S TP 316 (Note 2)
SST Note 1:
Penetrations 39, 40, and 41-had the original welds removed during replacement of the integral forgings due to design changes.
Thus, IE Bulletin 80-08 does not apply as 100 percent RT will be performed.
Note 2:
Penetration 118 is a recent penetration that will be field installed and 100 percent RT examined.
Thus, IE Bulletin 80-08 does not apply.
- Multiple Penetration with 4 3/8 In Dia. Pipes.
- Multiple Penetration with 4 1/4 In Dia. Pipes.
- Multiple Penetration with 4 3/4 In Dia. Pipes.
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