ML20133C903
| ML20133C903 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 11/02/1984 |
| From: | Huckney C KANSAS GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20133C868 | List: |
| References | |
| FOIA-85-101 QCP-VII-200, NUDOCS 8507220034 | |
| Download: ML20133C903 (8) | |
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Rev. 3 '5-30 l
PRCCE*:U?2 CHANGE 50'" ICE PC N 0014/RI NOTICE lC SIR
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PROCEDURE NL..BER OCP-Vil-200 FIVISION lC SIR 20
.!USTIIICATION FOR CHAliGF.:
To include inspection criteria to be in compliance with Bechtel
,f-Specification 10466-C-122.
,A REQUESTED CHANGF.(S):
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Add Paragraoh 3.2.5
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PROCELUEIS A?.?.CTED E? THIS CHA: IGE 240TICE:
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i (Additional procedures to be listed on back, if necessary.)
APPROVAL 5:
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Upon issuance by Doe:.:=ent C,sntrol, responsible holders of this document are requirec to place this docu:nent i. neciately follow-ing Page 1 c., f the affectec proceduret,s), identified soove.
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Apoencix Vill Pagai l
1.0 SCOPE
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This instruction provices direction for the inspection and cocumentation o
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AW5I D!.'l structural steel welds identified for inspection by Becntel s
Engineering in accorcance with KGLE C AR-19.
2.0 RESPONSIBILITIES
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2.1 The KGCE Construction Quality Control, Lead Welding Quality Con
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Engineering shall be responsible for the implementation of this i
instruction.
2.2 Personnel certified in accorcance with ANSI N45.2.6-78 "Qualifica-of Inspection, Examination, and Testing Personnel for Construction f
i Phase of Nuclear Power Plants" and American Welding Society OCl
" Standard for Qualification and Certification of Welding insoectors' shall be responsible for performing the inspections and documentatier activities defined in this instruction.
3.0 GENERAL 3.1 inspections specified in this instruction shall be performed visually utilizing fillet weld gauges, steel rulers or steel tape measures a
capable of measurements within I/16 inch increments. Uncercut d
cages will be capable of measuring I/32".
i 3.2
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The welds shall be insoected in accordance with the design crawing and paragraph 8.15.1 of the AWS - Structural Weicing Code D1.1-75 I
(See Page 3) with the following exceptions:
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3 3.2.1 Paint on welds - Paint will exist on most of the welcs to be I
inspected, in these cases visual examination snall be mace and the results cocumented in accorcance with Section 4.0.
Engineering evaluation of the inspection results is performed knowing that paint does exist on most weles.
Foreign material (fireproofing, etc) may remain after i
cleanina. This condition is acceptable if the foreign material does not preclude, in the judgment of the inspector,
,l a determination of the weld status per the inspection criteria outlined in this appendix.
If the foreion material precludes this determination, the weld shall be recleaned prior to inspection.
1 3.2.2 Convexity - Fillet welds need not satisfy the convexity limitations of AWS DI.1, Section 3.6.1 Reference Bechtel Specification 10466-C-122 and 10466-C-132 paragraph S.5.3.
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3.2.3 Undercut - Undercut shall not exceed 1/32 inch. Reference Bechtel Specification 10 66-C-122 and 10466-C-132 paragraph 6.5.2.
3.2.4
" Nail Holes" (Construction Aids) " Nail Holes" in embeds in some instances will be located wnere a weld is recuired.
.L The " nail holes" may remain open provided the weld on both sides of the " nail hole" is' increased from the size 2 inches per side.sh.own on the drawing by 1/16 of an inch for a len t
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/spoencix VI!!
Paga 2 Reference Bechtel crawmg C-!CO3 Misce :aneous Steel General Note !!.
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t 3.2.5 Couges - Couges in case materials sna!! not be longer than 3 l
inenes nor deeper than 3i16 of an inch. Couges in weld metal shall not recuce the section thickness of the weld below specified size.
I, Couges exceeding the above shall be noted on the Weld Data Sheet (Exhibit A or B) including cetails sucn as depth, length, and location
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on base or weld material.
Document discrepancies on a nonconformance recort.
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3.3 When inspection reveals a rejectable weld or joint configuration (excluding) clip to embed top or bottom weld overrun) the entire joint is to be "es-built" inspected and all weld sizes and lengths documented. The "as-built" weld sizes should be accurate as possible and should reflect
- any significant oversized welds within the joint.
3.4 Any missing material identified as a result of inspection per the design drawing shall be identified on an NCR.
3.5 Document any welder identification (D number) marked on the joint.
4.0 D OCUMENTATION
,f 4.!
The insoection results will be cocumented on an insoection recort similar
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to Exhibit A or S and submitted to KGT,E Construction Quality Control 1
for final review for comoleteness and accuraev. These reports must be comoleted in a consis' tent manner and as a minimum snali contain the followine information.
1.
Description and size of welo deficiency.
- 2. The dimension (distance) between beam and embed (to be reported as " set-back gap").
- 3. Drawing and detail number.
4 Date of inspection.
- 5. Name and certification number of the AWS CWI who performed the inspection.
- 6. Accept / reject.
4.2 When any condition is found that does not meet the acceptance criteria outlined in paragraoh 3.2 and 3.3 of this instruction, a nonconformance report will be generateo in accordance with the applicable project procedure and forwarded to Bechtel for evaluation. In order to reduce the amount of paperwork, it is acceptable to generate one i
nonconformance report per building.
4.3 The documentation generated as a result of this inspection Verification
?!an snail become an attachment to C AR-19.
5.0-EXHIBITS i-(
5.1 Exnibit A - Weld Data Sheet 5.2 Exhibit 3 - Weld Data Sheet
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?ME 2 3.!S QUALITY OF WELDS 8.15.1 VisuaLinspection.. All welds 3.6.3 Surfaces of butt icints rs:uired shall.be visualiv' inspected.
A weld to be flusn snail be finisnec so as not s
shall be accepted by visual inspection to recuce tne inickness of the thinner if it shows that:
base metal or weld metal by more than i
I/32 in.
(0.8) or five percent of the 8.15.I.! The weld has no cracks.
thickness, whichever is smaller, or leave t'
8.!5.1.2 Thorough fusion exists reinforcement that exceeos 1/32 in.
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between weld metal and base metal.
H owever, all reinforcement must be 8.!5.l.3 All craters are filled to removed where the weld forms part the full cross section of the weldt.
of a faving or contact surface.
Any 8.15.1.4 Weld profiles are in accor-reinforcement must blend smootnly into
__ dance with 3.6.
the plate surfaces with transition areas t
8.!5.1.5 The sum of diameters of free from edae weld uncercut. Chioninc may be used provided it is followe'd by piping porosity does not exceed 3/8 in.
(9.5 mm) in any linear inch of weld grinding.
Where surface finishing is
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and shall not exceed 3/4 in. (19.0 mm) required, its roughness valueII shall not in any 12.in. (305 mm) length of weld.
exceed 250 pin. (6.3).
Surface finished 8.15.1.6 Fillet welds in any sinale to values of over 125 uin. (3.2 um) through contir.uous weld shall be permitted 250 uin. shall be finished parallel to to underrun the nominal fillet size re-the direction of primarv stress. Surfaces 4
quired by 1/16 in.
(1.6 mm) without finisned to values of 125 pin. or less j
correction provided that the undersize may be finished in any direction.
weld does not exceed 10 percent of l
the length of the weld. On web-to-flance 3.6.6 Welds shall be free from overlac.
welcs on girders, no underrun is permitted at the enes for a length ecual to twice the width of the flange.
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microinenes (uin.).
3.6 ELD PROFILES The faces of ' fillet welds mav t,-
sliantiv convex, fla t, or sligntiv concave as shown on page 4, with none
.s of the imacceptable profiles also shown on Page 4 Except at outside corner l
joints, the convexity shall not exceed the value of 0.15 plus 0.03 in. where 5 is the actual size of the fillet weld 1
in inches. (See Page 4).
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3.6.2 Croove welcs shall preferab!v be made with slicht or minimum rein-i forcement except ' as may be otherwise
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provided. !n the case of butt anc corner joints, the reinforcement shall not exceed 1/3 in. (3!2 mm) in heiqht and shall have 4
gracual. transition to the olane of t.~.a base metal surface (see Pace 41 Thev 4
snall be free of the discontinuities shown for cutt joints on Page O
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