NFPA 56PS 12:2012 Edition
$80.71
NFPA 56 (PS): Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems
| Published By | Publication Date | Number of Pages |
| NFPA | 2012 | 51 |
NFPA 56 (PS) provides for life safety during the internal cleaning of flammable gas piping systems in power plants and industrial/commercial applications. This all-new Standard is issued in response to urgent recommendations by the U.S. Chemical Safety Board following a tragic incident at a power plant under construction. NFPA 56 (PS): Standard for Fire and Explosion Prevention During Cleaning and Purging of Flammable Gas Piping Systems provides minimum safety requirements for the cleaning and purging procedures of flammable gas piping systems for electric-generating plant, industrial, institutional, and commercial applications. Coverage of piping systems extends from the point of delivery to the equipment shutoff valve, including all valves, regulators, and other appurtenances. Requirements were developed by an ANSI-balanced committee made up of industry experts. NFPA 56 (PS) applies to all flammable gas piping systems, including those in electric-generating plants, refineries, petrochemical plants, and other commercial and industrial applications. The 2012 edition of NFPA 56 (PS): Prohibits the use of flammable gas for internal cleaning of piping systems. Provides guidance for purge end-points of many common flammable gases used in industrial and fuel gas applications. Covers activities including cleaning new or repaired piping systems, placing piping systems into service, and removing piping systems from service. Requires development of written procedures and a safety validation of procedures by competent persons. An informational example of a purge procedure provides users with valuable guidance in using the Standard and meeting the intent of the requirements. NFPA 56 (PS) is a critical reference for designers, operators, and contractors responsible for the design, construction, and commissioning of flammable gas piping systems.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | Important Notices and Disclaimers |
| 3 | Additional Notices and Disclaimers |
| 4 | 2.1 General 2.2 NFPA Publications |
| 7 | Chapter 1 Administration 1.1 Scope 1.2 Purpose 1.3 Retroactivity 1.4 Equivalency Chapter 2 Referenced Publications |
| 8 | 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 Notification of Hazards |
| 9 | 4.3 Cleaning and Purging Procedures 4.4 Safety Validation 4.5 Management of Change 4.6 Documentation |
| 10 | 4.7 Notification of Hazards 4.8 Evacuation of Affected Area 4.9 Segment Cleaning 4.10 Hangers and Supports 4.11 Nonflammable Atmosphere 4.12 Utility Coordination 4.13 Restricted Access 4.14 Pressure Testing and Inspection 4.15 Hot Work Safety Chapter 5 Training Requirements 5.1 Training Chapter 6 Cleaning 6.1 Cleaning of Flammable Gas Piping 6.2 Acceptable Fluid Media 6.3 Temporary Power/Fuel Supply 6.4 Temporary Piping (Including Hose Assemblies) |
| 11 | 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 |
| 12 | 8.3 Discharge of Purged Gases Annex A Explanatory Material |
| 20 | Annex B Purge End Points for Common Flammable Gases |
| 26 | Annex C Sample Purge Procedure |
| 47 | Annex D Informational References |
| 48 | Index |
