ML19289F164

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Responds to 790312 Ltr Re IE Bulletin 79-03,ASME SA-312 Stainless Steel Pipe Manufactured by Youngstown Welding & Engineering Co.Forwards Info on Piping in Use & Program for Volumetric Examination
ML19289F164
Person / Time
Site: Millstone Dominion icon.png
Issue date: 04/16/1979
From: Counsil W
NORTHEAST UTILITIES
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 7906040365
Download: ML19289F164 (4)


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April 16, 1979 Docket No. 50-336 Mr. Boyce H. Grier Director, Region I Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission King of Prussia, PA 19406

Reference:

(1) Boyce Grier letter to W. G. Counsil dated March 12, 1979, forwarding I&E Bulletin 79-03.

Gentlemen:

Millstone Nuclear Power Station, Unit No. 2 Longitudinal Weld Defects in ASME SA-312 Stainless Steel Pipe In Reference (1), Northeast Nuclear Energy Company (NNECO) was requested to deter-mine whether ASME SA-312, Type 304, or other welded (uithout filler metal) pipe manufactured by Youngstown Welding and Engineering Company is in use or planned for use in safety-related systems.

In response to Item 1 of the Bulletin, this piping is in use in several safety-related systems at Millstone Unit No. 2.

In response to Item 2 of the Bulletin, the attached pages identify the spool number, pipe size, system, quantity, design pressure, and design temperature for which the subject piping is in use.

In response to Item 3 of the Bulletin, a program for volumetric examination has been developed. The examination of the longitudinal welds will be performed pursuant to Millstone Unit No. 2 Technical Specification 4.4.10.a. Integrity of the components listed on the attached pages will be verified as per Section XI of the ASME Code. If the acceptance criteria delineated in Section XI are not met, an evaluation of the results will be performed and the results reported as indi-cated in Technical Specification 4.4.10.a.

It is noted that Millstone Unit No. 2 is currently completing the second refueling outage. I he first priority in the ernmination program is the safety injection tank piping, b etween the SIT's and the injection points. These lengths of piping repre-sent in excess of ten percent of the total affected piping.

Prior to the start of Cycle 3 operation, NNECO will report the results of the examinations completed to date, and discuss what, if any, additional examinations will be performed and a schedule for same.

7906040$ [ '

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We trust the above information is responsive to your request.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY W. G. Counsil Vice President Attachment 2236 132

PIPE DESIGN DESIGN SPOOL NO. SIZE SYSTEM QUANTITY PRESSURE TEMPERATURE (psi) ( F)

E-2627-27 14" HP & LP Injection & l'10" 60 289 CTMT Spray Pump Suction 17 14" 2' 5" 60 289 27A 14" ' q l' 4" 60 289 62 10" S/D Couling From Loop 2' 8" 500 300 2 15 63 10" S/ D Cooling from Loop 12'10" 500 300 2B 71 10" LPSI Pump Discharge l' 5" 500 300 72 10" 5'10" 500 300 73 10" 16' 1" 500 300 76 10" 1'10" 500 300 78 10" v 21'11" 500 300 85 10" CTMT Spray Pump Dis- 2' 1" 500 300 charge from S/D Heat Exchanger 89 10" Discharge f rom S/ D Heat 2' 1" 500 300 Exchanger 90 10" 13' 8" 500 300 91 10" 2' 3" 500 300 108 10" S/ 0 Coiling From Ex- 9' 8" 500 300 changer to Spray Header 109 10" 11' 2" 500 300 110 10" g 2' 8" 500 300

, 74 10" LPS I P amp Discharge 5' 1" 500 300 75 10" LPS1 Pump Discharge 4' 9" 500 300 101 10" S/D Cooling Line to 17' 9" 500 300 LPSI Pump Discharge Header 102 10" 12'11" 500 300 103 10" 10' 3" 500 300 104 10" 10' 3" 500 300 105 10" 4'11" 500 300 106 10" v 16' 3" 500 300 63A 10" S/U Cooling From Loop 3' 9" 500 300 2B 72A 10" LPSI Pump Discharge I'll" 500 300 77 10" LPSI Pump Discharge 4'10" 500 300 85A 10" CTMT Spray Pump Dis- 3' 9" 500 300 charge from S/D Heat Exchanger 89A 10" 5' 8" 500 300 103A 10" S/D Co31ing Line to 2' 6" 500 300 LPSI Discharge from S/D M Heat Exchanger ~

. 106A 76A 10" 10" h

LPSI Pump Discharge I' 0" l' 1" 500 500 300 300 e 79 12" LPSI Pump Discharge 7' 8" 500 300 m 80 12" y 6' 8" 500 300 N 81 12" LPSI Pump Discharge 5' 9" 500 300 N 82 12" J 2' 9" 500 300 105 12" S/ D Codling Line to O' 7" 500 300 LPSI Pump Discharge Header

PIPE DESIGN DESIGN SPOOL NO. SIZE SYSTEM QUANTITY PRESSURE TEMPERATURE (psi) (UF)

E-2627-107 12" S/D Cooling Line to l' 2" 500 300 LPSI Pump Discharge Header 203 12" LPSI Pump Discharge 22' 4" 500 300 204 12" 4' 0" 500 300 206 12" 8' 5" 500 300 209 12" y 11' 1" 500 300 81 12" LPSI Pump Discharge O' 3" 500 300 79A 12" LPSI Pump Discharge l' 6" 500 300 107A 12" S/D Cooling Line to O' 3" 500 300 LPSI Pump Discharge Header 2274 12" Safety injection Tank 13' 9" 500 300 Outlet 2275 12" 13' 9" 500 300 2276 12" 5' 9" 500 300 2277 12" 5' 3" 500 300 2278 12" 16' 5" 500 300 2279 12" 3' 4" 500 300 2280 12" 2' 8" 500 300 2281 12" 14' 0" 500 300 2281/. 12" 10' 7" 500 300 2282 12" 8'11" 500 300 2284 12" 13' 9" 500 300 2285 12" 5' 7" 500 300 2286 12" V 5' 3" 500 300 81 12" LPSI Pump Discharge O' 6" 500 300 48 12" 1'10" 300 300 53 12" l' 3" 300 300 55 12" y O'11" 300 300 58 12" S/D Cooling from Loop 20' 5" 500 300 28 59 12" S/ D Cooling from Loop 18'10" 500 300 2B 60 12" S/D Cooling From Loop 9' 1" 500 300 28 61 12" S/D Cooling From Loop 3' 2" 500 300 2B 199 12" 5'10" 500 300 200 12" 19' 6" 500 300 201 14" 20' 5" 500 300 202 14" q 15' 6" 500 300 47 14" LP Safet/ Injection l'11" 300 300 58/ 14" S/D Cooling from Loop 2' 8" 500 300 2B 61/ 14" S/D Cooling from Loop 5' 6" 500 300 w 58E 14" 14' 1" 500 300 m 1994 14" l' 2" 500 300 O

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