ML20210G203

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Change Notice 4 to Rev 2 to Instruction QI-021, Reinsp of Piping Sys Bolted Joint/Matl
ML20210G203
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 11/05/1986
From: Joyh W, Patterson A, Zill R
EVALUATION RESEARCH CORP.
To:
Shared Package
ML20210F162 List:
References
QI-021-04, QI-21-4, NUDOCS 8702110238
Download: ML20210G203 (4)
v • d • e


Text

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EVALUATION RESEARCH CORPORATION r

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COMANCHE PEAK RESPONSE TEAM UNCONTROLLED COP QUALITY INSTRUCTION FOR ISSUE-SPECIFIC ACTION PLAN VII.c CHANGE NOTICE: 004 INSTRUCTION No.: QI-021 REVISION NO. 2 ISSUE DATE: 11/05/86

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k/ REINSPECTION OF PIPING SYSTEM BOLTED JOINT / MATERIALS The QI identified above is hereby changed as shown on the attached pages of this notice.

Prepared by: Date: / C!?/

.f' V Approved by 2@/ds[dN/ M Dater ///J/#4 Issue C p inator Approved by: Dater // .

On-Sitiii Qppresentative / /

j AFProved by: Dater // ((

l Q 'haview Team Leader / /

l 0702110230 070126 I

' PDR ADOCK 05000445 A PDR

k Ch:ngs Notico 004

,g QI-021 Rev. 2 ITEM CHANGE TO QUALITY INSTRUCTION

1. Change Notice 003, Page 2, Attribute 3-Delete Paragraphs 2 and 3 of Attribute 3 in their b entirety and replace with the following:

I When bolts or ' cap screws are inserted into blind tapped holes and thread engagement cannot be verified 4

visually, thread engagement shall be verified to be equal to the thickness of one heavy hex nut, as a minimum. This shall be accomplished by. performing an ultrasonic examination to determine the entire length, (A), of the bolt / cap screw, and subtracting the

, non-engaged length, (B), as measured between the top of l '

, the bolt / cap screw head and the point where the bolt / cap _ screw enters the blind tapped hole. The inspector shall record data and perfore the necessary '

calculations on Attachment 6.8. The head of each bolt / cap screw shall be verified to be in contact with the top of the flange. The thickness of a heavy hex i nut is the value which corresponds to the minimum "H" dimension, as shown on page 3 of Attachment 6.3 to QI-021.  :

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The inspector shall indicate in the remarks section of each checklist, when applicable, that the bolts or cap j screws are located in blind tapped holes, i

i 2. Page 6 of QI-021 i \

l Added Attachment 6.8, Thread Engagement Determination j

1 in Blind Tapped Holes.

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3. Change Notice 003, Attachment 6.6 to QI-021

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l Delete Attachment 6.6 in its entirety and repisce it j with revised Attachment 6.6 .

4. Attachment 6.8 to QI-021 t

! Add Attachment 6.8 Thread Engagement Determination in j Blind Tapped Holes t

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b 14 Cheng2 Notice 004

- Attachment 6.6 QI-021 Rev. 2 Page 1 of 1 VERIFICATION PACKAGE NO. I-M-PBOM-INSPECTION TOOLS USED 4

ATTRIBUTE TOOL CODE SERIAL N0/ CALIBRATION DUE DATE a

1) Measure bolt diameter or dimensions across the flats of the bolt / cap screw head or nut
2) Nut height
3) a. Measure bolt or cap screw length
b. Measure non-engaged
length of bolt or cap screw
6) Torque

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l INSPECTOR DATE I

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a

  • Ch:nga N; tics 004 Attachment 6.8 QI-021 7 ~s Rev. 2

) Page 1 of 1

\' VERIFICATION PACKAGE NO. I-M-PBOM-THREAD ENGAGEMENT DETERMINATION IN BLIND TAPPED HOLES (A) (B) (A)-(B)

Bolt or Bolt or Required Length Cap Screw Cap Screw Non-engaged Engaged Engagement Over/Under Number Length Length Length (from Required (from UT exam) (from UT exam) Attachment Engagement 6.3, Pg. 3) 1 2

3 4

5 6

7

,-3 8

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9 10 11 12 13 14 15 16 17 18 19 20

.x_-) (B) Equal to distance from top of bolt or cap screw head to point at which bolt or cap screw enters tapped hole.

Inspector Date

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