NFPA 56:2020
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems
Hardcopy
13-01-2023
English
01-01-2020
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Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Coordination. 1.4 Retroactivity. 1.5 Equivalency. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 General Requirements 4.1 Piping System Construction. 4.2 Temperature and Pressure. 4.3 Notification of Hazards. 4.4 Cleaning and Purging Procedures. 4.5 Safety Validation. 4.6 Management of Change. 4.7 Documentation. 4.8 Notification of Hazards. 4.9 Evacuation of Affected Area. 4.10 Segment Cleaning. 4.11 Hangers and Supports. 4.12 Nonflammable Atmosphere. 4.13 Utility Coordination. 4.14 Restricted Access. 4.15 Hot Work Safety. Chapter 5 Training Requirements 5.1 Training. Chapter 6 Cleaning 6.1 Cleaning of Flammable Gas Piping. 6.2 Cleaning Media. 6.3 Temporary Power/Fuel Supply. 6.4 Temporary Piping (Including Hose Assemblies). 6.5 Pig Cleaning. 6.6 Target. 6.7 Isolation and Protection of Clean Piping Systems or Segments. Chapter 7 Purging into Service 7.1 Charging Piping System with Flammable Gas. 7.2 Discharge of Purged Gases. 7.3 Detection Equipment. Chapter 8 Purging Out of Service 8.1 Isolation. 8.2 Charging with Inert Gas. 8.3 Discharge of Purged Gases. 8.4 Detection Equipment. Annex A Explanatory Material Annex B Purge End Points for Common Flammable Gases Annex C Sample Purge Procedure Annex D Informational References
This standard shall apply to fire and explosion prevention during cleaning and purging activities for new and existing flammable gas piping found in electric-generating plants and in industrial, institutional, and commercial applications.
| DocumentType |
Standard
|
| ISBN |
978-145592546-9
|
| Pages |
57
|
| PublisherName |
National Fire Protection Association
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| NFPA 241:2022 | Standard for Safeguarding Construction, Alteration, and Demolition Operations |
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