Table of Contents

1 Scope and purpose
2 Definitions
3 References
4 Design of electric heat tracing systems
4.1 Identification of requirements
4.2 Heater design considerations
4.3 Power system design considerations
4.4 Temperature control considerations
4.5 Alarm considerations
4.6 Finished drawings and documents
4.7 Test considerations
5 Installation of electric heat tracing systems
5.1 Distribution and use of drawings at the
     installation site
5.2 Receiving of materials
5.3 Installation of materials
5.4 Startup testing for critical process control
     systems
6 Maintenance of electric heat tracing systems
6.1 Record keeping
6.2 Heater, alarm, and temperature controller circuit
     checks
6.3 Inspections
6.4 Periodic testing
Figures
1 Series heater
2 Parallel heaters
3 Typical one-line diagram of electric heat tracing
     system
Tables
1 Line list
Appendices
A Temperature and solubility tables and curves of
     borated water, caustic soda, and sodium pentaborate
     systems
B The function of electric heat tracing systems
     required to support engineered safety features
     piping systems
B1 Introduction
B2 Postulated conditions
B3 General industry technical specifications
C Electric heat tracing system requirements for post-
     accident sampling systems in nuclear power
     generating systems
C1 Introduction
C2 Regulations
C3 Electric heat tracing system
C4 References
C5 Bibliography
Appendix Figures
A1 Boric acid solubility curve
A2 Sodium pentaborate solubility curve
Appendix Tables
A1 Typical temperature parameters for boric acid
A2 Typical temperature parameters for sodium hydroxide
     (caustic soda)
B1 Station operational modes

Abstract

Describes recommended practices for designing and installing electric heat tracing systems in nuclear power generating stations. These systems apply to critical process temperature control and for process temperature control, on mechanical piping systems that carry borated water, caustic soda and other solutions.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN