ML20138P188

Rev 1 to Procedure CP-QP-19.7, Monitoring Welding Activities

ML20138P188
Person / Time
Site:	Comanche Peak, 05000000
Issue date:	05/15/1984
From:	Vega A, Willis G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
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References
FOIA-85-59 CP-QP-19.7, NUDOCS 8511060494
Download: ML20138P188 (4)

Text

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PROCEDURE REVISION ISSUE PAGE TEXAS UT!UTIES GENERATING CO NUMBER .

CATE CPSES P-Q P-19.7 1 I #4 MAY 151584 MONITORING WELDING PREPARED BY m4 dd .,

1. /r/pv OATE ACTIVITIES APPROVED BY:

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// DATE

1.0 REFERENCES

1 1-A QI-Q P-11.21-1, "Requi renents for Vi sual Weld Ins pection" 1-B WES-16 " Schedule of Standard Tes Weld Qualification Matrix and Welder Perfonnance Qualifi p, Log "

• /r, r r 1-C CP-QP-16.0, "Nonconfonnances" -

1-0 CP-QAP-16.1, " Control of Nonconfonning Itens (gNTROL vp8' G(g" '-i.[~8 /i 1-E CP-CPM-6.9B, " Welding Filler Material Control" -.

1-F CP-CPM-6.90, " Welding and Related Processes" 2.0 GENERAL 2.1 PURPOSE AND SCOPE -

The purpose of this procedure is to outline steps taken to monitor welding activities. Monitoring of welding activities shall assure that the welders are welding within the parameter specified by the applicable WPS. Personnel perfonning these monitoring acttvities shal1 be qualified in accordance with Reference 1-A.

3.0 INSTRUCTION 3.1 WELDER MONITORING Ten (10) welders shall be chosen at random fran the welders matrix of Reference 1-B for monitoring of welding activities in the shop and the field, j l

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• 8511060494 851016 PDR FOIA GARDEBS-59 PDR l

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, PROCEDURE REVISION ISSUE PAGE NUMBER DATE '

, TEXAS UTILITIES GENERATING CO.

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CP-QP-19.7 1 g 151984 2 of 4

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3.1.2 Monitoring will consist of ' verifying the following for i

weld made by each of the ten (10) welders chosen

1 a. Welder is currently qualified to the WPS he is using

b. Weld rod classification is as specified on the WDC

c. A copy of the correct Parmeter Guide is available at the weld site

! d. Tools for use on stainless steel material are marked in j accordance with Reference 1-F

)

e. Low Hydrogen weld rod exposu re time is within the limits set in Reference 1-E l

. f. The following are in accordance with the WPS being used:

1. Shield gas and flow rate

2. Purge gas and flow rate

3. Preheat

4. Interpass taperature

, 5. Polarity 1

6. Amperage

7. Voltage

8. Hand Speed / Max heat input

9. Bead width 3.1.3 Amperage , voltage , and taperatu res shall be determined using calibrated equipment obtained fram the Calibration

. Facili ty. The equipment identification and expiration date 1

shall be ?ecorded on the Welding Monitoring Checklist.

3.2 FREQUENCY j Monitoring of welding activities shall be perfonned at a

. frequency necessary to assure that welding activities are accomplished in accordance wi th procedural requi rments.

This frequency shall be as determined by the Quali ty Engineering Supervi sor, via a 3-pa rt memo to the QC Supervisor.

3.3 00CUMENTATION i

Shop and field weld monitoring activities shall be doctanented j on the " Welding Monitoring Checklist" (Attachment 1).

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_ . . - . TUGCQ OA ,

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l PROCEDURE REVISION ISSUE

. NUMBER DATE PAGE TEXAS UTILITIES GENERATING CO.

CPSES CP 1 MAY l ,0 g4 3 of 4

! - I -QP-19.7

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i i t 6

Unsatisfactory conditions shall be reported on Attachment 1 (

and forwarded to Quali ty Engineering for review and l possible corrective action.

i Welding Monitoring Checklists shall be kept on file by t l Quality Engineering.

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!  : 3.4 NONCONFORMANCES i

i Nonconforming condi tions shall be reported per Reference i i '

1-C or 1-0 as applicable.

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l INSTRUCTION i ISSUE N

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CP-QP-19.7 l 1 MAY 15 584 j 4 of 4 l i I  !.

ATTACHMENT 1 1 g j, ,

Fase of l 0 4 0 h I WELDING MONITORING l  !

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CHECKL!$T I i

1 WELDER SYMBOL THERMOMETER: M&TE EXP, _

. r 1 DRAWING / REY. AMP METER: M&TE EXP. _

i SHOP WELD NO: VOLT METERt M&TE EXP. _

, FIELD WELD NO:

4 WPS NO./REV FROCESS

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CHARACTERISTIC SAT UNSAT N/A ,

s. Welder Qualification per WPS  ;

i l b. Weld Rod Classification per WDC and Dws.

I 1 i i

c. Copy of correct Parameter Cuide at Weld Site l

d. Tool Identification for S.S.

e. Low Rydrogen Wald Rod Exposure Time f Shied 11ag Ces and Flow Rate per WPS

! 3 Furge Cas and Flow Rate per WPS f

] h. Preheat per UFS

! 1. Interpass Temperature per VPS 4 .

j. Polarity per WPS

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! k. Asperage per WPS l,

1. Voltage per WPS l

! i n. Travel Speed /Maatsus Heat Input

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a. Wald lead Width per WPS I=

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