ML20210G203
| ML20210G203 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| 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) | |
Text
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EVALUATION RESEARCH CORPORATION r
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UNCONTROLLED COP COMANCHE PEAK RESPONSE TEAM QUALITY INSTRUCTION FOR ISSUE-SPECIFIC ACTION PLAN VII.c CHANGE NOTICE: 004 INSTRUCTION No.: QI-021 REVISION NO.
2 ISSUE DATE:
11/05/86 (k/
REINSPECTION OF PIPING SYSTEM BOLTED JOINT / MATERIALS The QI identified above is hereby changed as shown on the attached pages of this notice.
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Prepared by:
Date:
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Approved by 2@/ds[dN/ M Dater
///J/#4 Issue C p inator Approved by:
Dater
//
On-Sitiii Qppresentative
/
/
j AFProved by:
Dater
//
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'haview Team Leader
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l 0702110230 070126 I
PDR ADOCK 05000445 A
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:
When bolts or ' cap screws are inserted into blind tapped I
holes and thread engagement cannot be verified visually, thread engagement shall be verified to be 4
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.
l 4
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
in Blind Tapped Holes.
1 1
3.
Change Notice 003, Attachment 6.6 to QI-021
[
l Delete Attachment 6.6 in its entirety and repisce it j
with revised Attachment 6.6.
- 4..8 to QI-021 t
Add Attachment 6.8 Thread Engagement Determination in j
Blind Tapped Holes t
4 Ii O
4 4
k 2
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
l l
i
a Ch:nga N; tics 004
- .8 QI-021 7 ~s Rev. 2
)
Page 1 of 1
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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
i
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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