ML19320D583

Responds to IE Bulletin 80-08.Flued Heads Which Are Butt Welded to Containment Penetration Sleeves Used in Both Units.Asme Code,Section III,1974 Through Winter 1974 Addenda,Applied

ML19320D583
Person / Time
Site:	Limerick
Issue date:	07/02/1980
From:	Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
GOVT-1-1, IEB-80-08, IEB-80-8, NUDOCS 8007210567
Download: ML19320D583 (7)

Text

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g PHILADELPHIA ELECTRIC COMPANY 23 Oil MARKET STREET P.O. BCD( 8699 PHILADELPHIA. PA.19101 JOHN 5. KEMPER VIC EfR ESID ENT E.1.................."

JUL - 21960 Mr. Boyce H. Grier, Director United States Nuclear Regulatory Commission Office of Inspection and Enforcement, Region I 631 Park Avenue King of Prussia, PA 19406

SUBJECT:

Limerick Generating Station, Units 1 and 2 Docket Nos. 50-352 and 50-353 IE Bulletin No. 80-08 Examination of Containment Liner Penetration Welds FILE: GOVT 1-1 (IE Bulletin 80-08)

Dear Mr. Grier:

This is in complete response to IE Bulletin 80-08, forwarded to us on April 7,1980, concerning the examination of containment liner penetra-tion welds.

1. Fired heads which are ' et welded to containment penetration sleeves are used in Lia; rick Units 1 and 2 as illustrated in PSAR Fig. 5.2.5 (Attachment 1) . There will be one hundred thirteen (113) such penetrations per unit at Limerick.

Twenty-nine (29) of these penetrations on Unit I have been completed.

2a. The applicable code is AShE Section III, 1974 through Winter 1974 Addenda.

2b. Flued head to containment penetration sleeve butt welds have been radiographed. This is required per our Specification for Field Fabrication and Installation of Piping and Instrumentation for i Nuclear Service.

2c. All joints are open butt with a TIG root; backing bars are not I used. Pipe materials and sizes are listed in Table 1 (see  !

Attachment 2) .

2d. Of the 29 process piping penetrations which have been completed at Limerick, 9 of the flued head to penetration sleeve welds required repairs, the other 20 did not. Penetrations requiring repairs are outlined in Table 2 (see Attachment '2) .

3. Not applicable. 1 0 0 0 721:015$7

l Mr. Boyce H. Grier - (continued) Page 2  !

As stated in r sponse 2b., it is a requirement of our specification that all flued head to penetration sleeve butt welds be radiographed.

Our experience with the 29 completed penetrations has been that code acceptable radiographs are obtainable for these welds. The remainder of i the flued head to penetration sleeve butt welds on Unit 1 and all on ,

Unit 2 will be radiographed. '

We will be pleased to submit any other information that you may require on this matter.

Very truly yours,

,$EUh John S. Kemper Attachments:

1. Typical Containment Penetration

2. Containment Liner Penetration Welds Data Copy to: U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Division of Reactor Construction Inspection Washington, DC 20555 J

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PHILADELPHIA ELECTRIC COMPANY LIMERICK GENERATING STATION UNITS 1 AND 2 PRELIMINARY SAFETY ANALYSIS REPORT

. PRIMARY CONTAINMENT PROCESS LINE

.,, PENETRATION FIGURE 5.2.5 October 1975

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Philadelphia Electric Company.

.IE Bulletin 80-08 Rest.dnse Attachment 2 i

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ATTACHMENT 2 TABLES 1 and 2

- CONTAINMENT LINER PENETRATION WELDS DATA i

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TABLE 1 LIMERICK GENERATING STATION, UNIT NO. 1

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CONTAINMENT. LINER PENETRATION BUTT WELDS COMPLETED TO DATE Nom. Nom. ASME Material PIna- Size Thk.

.tr: tion Service (in.) (in.) Flued Head Nozzle X-7A Main Steam 42 1.000 SA-350 GR LF2 SA-516 GR 60' X-7B Main Steam 42 1.000 SA-350 GR LF2 SA-516 GR 60 X-7C ' Main Steam 42 1.000 SA-350 GR LF2 SA-516 GR 60 X-7D Main Steam 42 1.000 SA-350 GR LF2 SA-516 GR 60 X-8 Main Steam Line Drain 12 0.843 SA-105 SA-333 GR 1 X-9A Feedwater 42 1.500 SA-350 GR LF2 SA-516 GR 60 X-9B Feedwater 42 1.500 SA-350 GR LF2 SA-516 GR 60

~X-10 Main Steam to RCIC Turb. 12 0.843 SA-105 SA-333 GR 1 X-11 Main Steam to HPCI Turb. 20 0.812 SA-105 SA-333 GR 1 X-12 RHR Shut Down Supply 36 1.000 SA-182 GR 316 SA-516 GR 60 X-13A RHR Shut Down Return 20 0.812 SA-182 GR 316 SA-333 GR 1 X-13B~ RHR Shut Down Return 20 0.812 SA-182 GR 316 SA-333 GR 1 X-17 RPV Head Spray 14 0.750 SA-182 GR 316 SA-333 GR 1 X-39A Containment Spray 24 0.968 SA-105 SA-516 GR 60 X-39B Containment Spray 24 0.968 SA-105 SA-516 GR 60 X-44 CRD Return 18 1.034 SA-105 SA-516 GR 60 X-45A LPCI Injection 20 0.812 SA-182 GR 316 SA-516 GR 60 X-45B LPCI Injection 20 0.812 SA-182 GR 316 - SA-516 GR 60~

X-45D LPCI Injection 20 0.812 SA-182 GR 316 SA-516 GR 60 X-204A RHR Pump Test Line and 24 0.500 SA-105 SA-516 GR 60 Cont. Cooling X-204B RHR Pump Test Line and 24 0.500 SA-105 SA-516 GR 60 Cont. Cooling X-205A Containment Spray 12 0.687 SA-105 SA-333 GR 1 X-205B Containment Spray 12 0.687 SA-105 SA-333 GR 1 X-210 HPCI Turbine Exhaust 30 0.500 SA-105 SA-516 GR 60 X-215- RCIC Turbine Exhaust 18 0.500 SA-105 SA-516 GR 60 X-226A RHR Min. Recire. 10 0.500 SA-105 SA-333 GR 1 X-226B RHR Min. Recire. 10 0.500 SA-105 SA-333 GR 1 X-238 RHR Relief Valve Disch. 16 0.500 SA-105 SA-333 GR 1 X-239 RHR Relief Valve Disch. 16 0.500 SA-105 SA-333 GR 1

s .u TABLE 2 LIMERICK GENERATING STATION, UNIT NO. 1 DEFECTS FOUND TO DATE IN CONTAINMENT LINER PENETRATION BUTT WELDS Total Weld Length of Defects Found Penetration Length (in.) Defect (in.) and Repaired

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X-8 38 4 Porosity X-9A 132 2 Slag X-9B 132 1 Slag X-11 63 1/4 Incomplete Penetration X-13A 63 15-1/2 Incomplete Penetration X-392 75 1/2 Porosity X-44 57 5 Slag & Porosity X-204B 75 10 Root Concavity X-215 57 18 Incomplete Penetration

• l In all cases the questionable area was removed, repair ,

welded, re-radiographed and found acceptable, f

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