ML20205Q673

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Rev 0 to Plant Mfg Instruction 3.1.2, Thread Upsetting on Welded Sway Struts. Related Documentation Encl
ML20205Q673
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 10/16/1980
From: Cranor D
NPS INDUSTRIES, INC.
To:
Shared Package
ML20205Q559 List:
References
FOIA-85-59 3.1.2, NUDOCS 8606020329
Download: ML20205Q673 (3)


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PLANT MANUFACTURING INSTRUCTIONS PMI No.

3.1.2 Dated Revision No. T Corporate 10/16/80 0 lAustin

__ , Portland EXHIBITS TITLE : THREAD UPSETTING ON WELDED SWAY STRUTS SCOPE OF REVISION :

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hhbv APPROVAL SIGNATURES Original Issue . Rev 2 Rev 2 Rev 3 Au ther iJggg -

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8606020329 860521 PDR FOIA GARDE 85-59 PDR

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.npS PLAMT MANUFACTURING INSTRUCTIONS (

Rev,ision No.:

Title:

THREAD UPSETTING ON WELDED SWAY STRUTS

' *9* I f I 10/16/80

1.0 PURPOSE

1.1 To establish the method for upsetting threads on eye rods

, in welded sway struts. - -

2.0 SCOPE

2.1' This instruction encompasses all, sway strut size ,06,through

-36. .- ,

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3.0 PROCEDURE

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3.1 Remove eye rod from coupling nut on sway strut.-

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3.2 Layout and tirill a 1/4"D bole through the' pipe wall Do

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approxitcately one inch from the coupling nut weld. -

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i not drill through both walls of the pipe.

i 3.3 Remove as much, of the drill shavings from inside of the .

g pipe as is practicable. ,.

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3.4 Screw the eye rod into the coupling nut until the first

' two full threads can be seen through 'the 1/4"D hole in -

the pipe wall. -

3.5 Upset * (defom) two adjacent fu'11 threads by inserting a flat end'ed punch (driv.e pin' punch) through the 1/4"O bole and striking with a hammer. ,

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3.6 Screw the eye rod in one half turn and repeat Step 3.5

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above thus upsetting the threads two places .1800 apart. .

Attempt 'tio unscrew the eye rod to verify that the threads 3.7 If not upset, repeat Steps 3*.4 through 3.6 l are upset. - -

above Using heavier hammer blows. ~

3.8 Repeat Steps 3.1 through 3.7 if necessary, for the other

  • cnd of the sway strut.

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201865-6550 telex 141455 Octobe,r 23, 1980 f-NPSI-12-1055 Texas Utilities Services, Inc.

P.O. Box 1002

  • N' Glen Rose, Texas 76043 O J.T. Merritt, Jr./R.T. Uolantejus 4 2 Attention:

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Subject:

Texas Utilities Gen. Co. O,S.-

Comanche Peak Stm. Elec. Sta. O' Units 1 and 2 Purchase Order No. CP0046 A.1

Subject:

(PMI No. 3.1.1) Thread Upcet Re f. : TWX-12,489 Gentlemen:

NPS Industries.is tre.,amitting to TUSI a (PMI No>. J. 2.1, Rev.1)

Thread Upset for your use.

If I can be of any further assistance, please do not hesitate to contact me.

Very truly your s, NPS INDUSTRIES, INC.

Herman W. D'Errico Project Manager HviD:rms Attachments: (1) 4 pages g{hhQle cc: H.R. Rock, G&H 2L t

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D.C. Frankum, B&R 1L i e J.T. Merritt, TUSI OL, 1L, 1A #4

  1. R.E. Holloway, G&H 1L f 7 J. Oliver, HPSI e TUSI 1L  %,

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