| Standard Operating Procedure | SOP No. |
| --- | --- |
| Weld Program | 5.024 |

Effective: 03-06-12

DCR No.: 10010

Supersedes: 7-7-99

Revision No.: 5

Revision Date: 03-06-12

Page No.: 1 of 3

## 1

## Purpose

1.1 To establish a standard procedure for documenting weld schedule development and/or program parameters for orbital/automatic GTAW machines.

## 2

## Scope

2.1 This procedure applies to welding pharmaceutical stainless steel piping, and tool hookup assemblies.

## 3

## Responsibility

3.1 The Therma general foreman (GF) shall manage the welders and verify compliance with this procedure.

3.2 The welders certified as per SOP 7.009 (GTAW Welder Qualification) shall be responsible for performing the following procedures.

## 4

## Procedures

4.1 Where applicable, review the customer’s weld specifications for weld acceptance criteria and make welds as required.

4.2 Always turn power supply off before making any cable connection changes to the power supply.

4.3 Ensure that the power supplied to the welding machine is from a dedicated circuit. Do not connect to electrical circuits shared with other users.

4.4 Verify that the proper input voltage and amperage are supplied.

4.5 Calibrate the weld head

4.5.1 at the beginning of each shift

4.5.2 when changing the weld head

4.5.3 if changing power source

Note: Adjust the following parameters in the orbital/automatic GTAW machine as per approved weld program schedule values.

4.6 When selecting or developing a new weld program schedule a welder shall generate test coupon(s) to check compliance with weld acceptance criteria.

4.6.1 Pulse

4.6.2 Rotation

4.6.3 Synchro

4.6.4 Amperage

4.6.5 Time duration

4.6.6 Arc gap

4.7 Perform a test run when selecting a new weld program schedule.

4.8 Record the weld configuration program (for each pipe size) as a reference guide for future welds, use Form FN 5.024.1 (Weld Program Log for 207) or Form FN 5.024.2 (Weld Program Log for 107).

4.9 Provide coupons as required by SOP 7.024 (Coupons).

## Review and Approval

5.1 The Therma Quality Control Examiner (QCE) shall examine the coupons as per SOP 7.009 (GTAW Welder Qualification).

5.2 The Therma QCE shall then notify the welder of results and record on Form FN 5.024.1 (Weld Program Log for 207) or FN 5.024.2 (Weld Program Log for 107).

## Document Approval

Field / Operations Manager

Date

Engineering Manager

Date

Quality Assurance Manager

3/06 Date
12