| Standard Operating Procedure | SOP No. |
| --- | --- |
| Bonding Procedure for PVDF Infrared 63 Fusion Method | 5.031 |

DCR No.: 97031

**Effective**: 7-15-97  
Supersedes: New  
Revision Date: New  
Page No.: **1 of 4**

Revision No.: New

## 1

## Purpose

1.1 To establish a standard procedure for all Therma bonders performing  
polyvinylidene fluoride (PVDF) infrared (IR) 63 fusion method.

## 2

## Scope

2.1 This procedure applies to all Therma bonders or bonding operators  
performing the PVDF IR 63 fusion method.

## 3

## Responsibility

3.1 All bonders will be qualified under the direct supervision of the quality  
control department.

3.2 Only qualified bonders are to perform the following procedures.

## 4

## References

4.1 ASME B31.3 - “Chemical Plant and Petroleum Refinery Piping,” 1993  
Edition.

## 5 Storage Requirements

5.1 All PVDF material shall be isolated and stored in a clean dry storage  
area.

5.2 The material in the storage area shall be sufficiently supported so as to  
prevent bowing.

## 6

## Procedures

6.1 Gowning

6.1.1 Wear clean powder free gloves to handle all cleaned PVDF pipe  
and components.

6.1.2 When fabricating in clean areas (i.e. Class 10 or 10,000), wear  
clean room garments.

6.1.3 Follow project specification for gowning procedure as required  
when performing this procedure in the field.

## 6.2 Tool Cleaning

6.2.1 Clean all hand tools (including pipe cutters, chamfering and  
peeling tools) with isopropyl alcohol (IPA).

6.2.2 Blow dry the hand tools with filtered nitrogen.

## 6.3 Material

6.3.1 Use only quality control released.

## 6.4 Cleaning

6.4.1 Clean outside surface of pipe and face of fitting using IPA and  
clean room grade wipes.

## 6.5 Heating

6.5.1 Preset heat temperatures of the heating tool from 460 C (86°F)  
to 480 C (896°F).

6.5.2 Undo the socket-head cap screws on the clamping devices.

6.5.3 Fit the clamping inserts of the required pipe size into the clamping  
devices (8 each per size).

6.5.4 Flush the clamping inserts with the front side of the clamping  
device.

6.5.5 Tighten the socket-head cap screws.

6.5.6 Follow manufacturer's instructions for setting time and language.

6.5.7 Follow manufacturer's instructions for selecting pipe data and  
overlap distance.

6.5.8 Follow manufacturer's instructions for facing operation.

6.5.9 Follow manufacturer's instructions for joining and heating.

## 6.6 Completion

6.6.1 If required, submit the test assembly to quality control department  
for bonding procedure qualification approval.

## Document Approval

Field Operations Manager  
6-2 Date  
97

Quality Control Manager  
6-2 Date  
92

Quality Assurance Manager  
7-8-97  
Date