| Standard Operating Procedure | SOP No. |
| --- | --- |
| Bending Procedure for Rigid PVC | 5.035 |

**Effective**: 07-07-00

DCR No.: 03051

Supersedes: 07-07-00

Revision No.: 1

Revision Date: 8-29-03

Page No.: **1 of 3**

## 1

## Purpose

1.1 To establish a standard procedure for bending rigid polyvinyl chloride (PVC).

## 2 Scope

2.1 The procedure applies to any rigid PVC.

## 3 Responsibility

3.1 Therma’s foreman is responsible for ensuring that the journeymen are performing the following procedures.

## 4 Procedures

4.1 Obtain the following required equipment/materials prior to bending PVC.

4.1.1 PVC Heater  
4.1.2 Bending Table  
4.1.3 Plugs  
4.1.4 Water  
4.1.5 Rags  
4.1.6 Isopropyl alcohol (IPA)

4.2 When marking piping for bends, use felt tip pens only. This color will be removed by using IPA.

4.3 Layout blocks on the bending table.

4.4 Plug the ends of the pipe to be bent.

4.5 Heat the pipe using the PVC heater.

4.6 When the pipe softens, form the bends using the bending jig.

---

|Revision No.||SOP No.|Page|
|---|---|---|---|
|4.7 4.8|1 Cool the form with water and rags. Remove plugs and wipe off construction lines with IPA.|5.035|2 of 3|
|Review and Approval|||  
|5.1|Upon completion of the procedure, the journeyman shall submit their|||

results to the Therma’s foreman for review and approval.

---

| Revision No. | SOP No. | Page |
| --- | --- | --- |
| 1 | 5.035 | 3 of 3 |

## Document Approval

Jim McGaven Plastic Fabricator

8-28 Date  
5-03

Steve Rusc  
Engineering, Vice President

8-28 Date  
-03

Quality Assurance Manager

8-28 Date  
3-03