ML19332A841

Submits Response to IE Bulletin 80-08.Plant Contains Flued Head Penetration Design W/Containment Boundary Butt Welds Between Penetration Sleeve & Process Piping.Penetration Welds Radiographically Examined

ML19332A841
Person / Time
Site:	South Texas
Issue date:	08/04/1980
From:	Oprea G HOUSTON LIGHTING & POWER CO.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-80-08, IEB-80-8, ST-HL-AE-506, NUDOCS 8009180467
Download: ML19332A841 (7)

Text

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.rma o August 4, 1980 ST-HL-AE-506 SFN:

V-0540 Mr. Karl Seyfrit Director, Region IV Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76102

Dear Mr. Seyfrit:

South Texas Project Units 1&2 Docket Nos. STN 50-498, STN 50-499 IE Bulletin No. 80-08 Bulletin No. 80-08, received April 10, 1980, has been reviewed by Houston Lighting & Power Company.

As required by the Bulletin, the South Texas Project design has been examined to obtain the requested infonnation for containment penetration connections.

HL&P's response to this Bulletin is as follows:

1) STP contains the flued head penetration-design as well as other designs with containment boundary butt weld (s) between the penetration sleeve and process piping.

2a) STP meets the requirements of Regulatory Guide 1.19, Revision 1, with weld examinations in accordance with Class 2 criteria.

Plant design is in accordance with the edition and addenda of the ASME code in effect on January 1, 1977.

2b) All flued head weld joints (NE ll20-1(c)) and welded head weld joints (NE 1120-1 (d)) (for moderate energy penetrations) will receive 100.'

radiographic examination during construction.

2c) Backing bars have not and will not be used in STP containment penetration welds.

Weld joints are either consumabl'e insert or open butt.

Pipe material and size are listed on the attachments.

Flued head penetration data are in Attachment 1, while those for moderate energy penetrations are in Attachment 2.

2d) Results of nondestructive examinations are listed on the attachments.

8009180l/67 j

m

F Houston Lighting & Power Company August 4, 1900 ST-HL-AE-506 SFN: V-0540 Page 2

3) Since STP penetration welds are checked by radiographic examination, problems with ultrasonic testing identified in the Bulletin will not have any impact on STP.

If there are any questions, 'please contact Mr. Shawn Rodgers at (713) 676-7953.

Very truly yours, r//

. / /GM. hprea,(Jr.

' O Executive 4fce President PLW/pjb Attachments cc:

Director, Division of Reactor Construction Inspection NRC Office of Inspection and Enforcement M. D. Schwarz (Baker & Botts)

R. Gordon Gooch (Baker & Botts)

-J.

R. Newman (Lowenstein, Newman, Reis, Axelrad & Toll)

D. G. Barker A. J. Granger R. A. Frazar-G. B. Painter

R. L. Waldrop H. R. Dean C, L. McNeese 1

-I h.

August 4. 1980 Atttchment 1 -

Flued H ad Penstrations ST-HL-AE-506 SFN: V-0540 Outer Sleeve Penet. Ass'y Wall Material Grade Diameter Wall Grade Welded Defects

.375" CS SA-155/KCF60 54" 2.286" SA-350/LF2 No

.375" CS SA-15S/KCF60 54" 2.286" SA-350/LF2 No

.375" CS SA-155/KCF60 54" 2.286" SA-350/LF2 t!o

.375" CS SA-155/KCF60 54" 2.286" SA-350/LF2 No

.938" CS SA-155/KCF60 42"

.857" SA-350/LF2 No

.938" CS SA-155/6 42"

.d57" SA-350/LF2 No

~-

.938" CS SA-155/6 42"

.857" SA-350/LF2 No

.938" CS SA-155/KCF60-42"

.857" Undeter.

No

.322" CS SA-333/6 14"

.750" SA-182/F304 No

.432" CS SA-333/6 12"

.687" SA-182/F304 No

.322" CS SA-333/6 14"

.750" SA-182/F304 Yes (1)

.322" CS SA-333/6 14"

.750" SA-182/F304 Yes (2)

.432" CS SA-333/6 12"

.687" SA-182/F304 No

.322" CS SA-333/6 14"

.750" SA-182/F304 Yes (3)

.322 CS SA-333/6 14"

.750" SA-182/F304 Yes (4)

.432 CS SA-333/6 12"

.687" SA-182/F304 Yes

• None

.322 CS SA-333/6 14"

.750" SA-182/F304 No

- (Cent.)

Au9ust 4, 1980 Flued Herd Penstrations' ST-HL-AE-506 SFN: V-0540 Outer Sleeve Penet. Ass'y Wall Material Grade Diameter Wall Grade Welded Defects

.375" CS SA-155/KCF60 58" 1.428" SA-350/LF2 No

.375" CS SA-155/KCF60 58" 1.428" SA-350/LF2 No

.312" CS SA-155/KCf60 28"

.825" SA-350/LF2 No

.312" CS SA-155/KCF60 28"

.825" SA-350/LF2 No

.237" CS SA-333/6 14"

.438" SA-182/F316 No

.531" CS SA-333/6 14"

.485"

.SA-182/F304 No

.237"-

CS SA-333/6 14"

.404" SA-182/T316 No

.322" CS SA-333/6 14"

.750" SA-192/F304 Yes None

.438" CS SA-333/6 12.75"

.406" SA-105 No

.438" CS SA-333/6 12.75"

.406" SA-105 No

.438" CS SA-333/6 12.75"

.406" SA-105 No

.438" CS SA-333/6 12.75"

.406" SA-105 No

.365" CS SA-333/6 20"

.594" SA-182/F304 No

.365" CS SA-333/6 20"

.594" SA-182/F304 No

.322" CS SA-333/6 14"

.750" SA-182/F304 Yes None

.432" CS SA-333/6 12"

.844" SA-350/LF2 No

.432" CS SA-333/6 12"

.844" SA-350/LF2 No

- (Ccnt.)

August 4;'1980 ST-HL-AE-506 Fluid llead Penitratiens SFN: V-0540 Outer Sleeve Penet. Ass'y fall Material Grade Diameter Wall

-Grade Welded Defects

.432" CS SA-333/6 12"

.844" SA-350/LF2 No 432 CS SA-333/6 12"

.844" SA-350/LF2 No p

___2

nugust 4, 1980 -

ST-HL-AE-506 Wald:d Head P natrations SFN: V-0540 Outer Sleeve Penet. Ass'y Pc.netration Joint Material Grade Diameter Wall Grade Welded Defects

.M-23 OB or Cl CS SA-155/KCF60 24" 1.563" SA-234-WPB No M-24 C1 CS SA-155/KCF60 24" 1.563" SA-234-WPB Yes None M-25 CI CS SA-155/KCF60 24" 1.563" SA-234-WPB Yes' (1)

M-26 OB or Cl CS SA-155/KCF60 24" 1.563"-

SA-234-WPB 29 M-27 Cl CS SA-155/KCF60 24" 1.563" SA-234-WPB Yes (2)

M-28 Cl CS SA-155/KCF60 24" 1.563" SA-234-WPB Yes (3)

M-33 Cl CS SA-155/KCF60 28"

.714" A420-WPL6 Yes On hold M-34 Cl CS SA-155/KCF60 28"

.714" A420-WPL6 Yes On hold M-35 OB or CI CS SA-333/6 28"

.714" A420-WPL6 No M-36 Cl CS SA-333/6 28" 1.6875" A420-WPL6 No M-37 Cl CS SA-333/6 28" 1.6875" A420-WPL6 No M-38 OB or Cl CS SA-333/6 28" 1.6875" A420-WPL6 No M-39 OB or Cl CS SA-333/6 24" 1.5625" SA-234-WPB No M.-40 GB or Cl CS SA-333/6 24" 1.5625 SA-234-WPB No M-45 OB or CI CS SA-333/6 8"

.812" SA-234-WPB No M-47 OB or CI CS SA-333/6 8"

.594" SA-254-WPS No M OB or Cl CS SA-333/6 8"

.594" SA-234-WPB No M-56 OB or Cl CS SA-333/6 10"

.844" SA-234-WPB No

- _ = _ _

Attacilment 2 - (Lont. )

W31ded Head P:netratisns August 4, 1980-ST-HL-AE-506 SFN: V-0540 Outer Sleeve Penet. Ass'y Penetration Joint Material Grade Diameter Wall Grade Welded Defects M-57 OB or Cl CS SA-333/6 8"

.593" SA-234-WPB No M-58 OB or Cl-CS SA-333/6 8"

.593" SA-234-WPB No M-59 OB or CI CS SA-333/6 10" 1.0" SA-234-WPB No M-60 OB or Cl CS SA-333/6 10" 1.0" SA-234-WPB No M-61 OB or CI CS SA-333/6 8"

.594" SA-234-WPB No M-71 CI CS SA-333/6 16" 1.219" SA-234-WPB Yes (4)

M-72 OB or CI CS SA-333/6 8"

.594" SA-234-WPB No M-75 OB or CI CS SA-333/6 14" 1.094" SA-516/70 or No SA-234-WPB M-77 OB or CI CS SA-333/6 20" 1.50" SA-516/70 No M-81 OB or C1 CS SA-333/6 12" 1.0" SA-516/70 or No SA-234-WPB M-87 C1 CS SA-333/6 16" 1.219" TA-234-WPB Yes (5)

M-88 OB or CI CS SA-333/6 10"

.244" SA-c34/WPB No OB: Open Butt CI: Consumable Insert CS:

Carbon Steel Defects encountered:

(1) Burn-through and porosity (2)

Burn-through and porosity (3) Minor defects (repaired by grinding)

(4) Unconsumed insert (5) Burn-through and unconsumed insert

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