ASME B31P : 2017

Foreword
Committee Roster
Correspondence With the B31 Committee
1 Introduction
2 Glossary
3 Temperature Measurement
4 Temperature Control
5 Welding Preheat
6 Postweld Heat Treatment (PWHT)
7 Postforming and Material Heat Treatments
8 Alternatives and Exemptions to Preheat and PWHT Requirements
Nonmandatory Appendices
A - Recommendations for the Proper Use of Thermocouples
B - Recommendations for Control of Narrow Temperature Range
    Heat Treatments: Local Heat-Treatment Methods
C - Branch Connection Examples
D - Temper Bead Method Alternative to PWHT
E - Fracture Mechanics Alternative to PWHT

This Appendix describes the recommendations to be followed during the setup and application of local controlled PWHT when using electric resistance heating pads.