B.3 Overview. B.3.1 A process hazard analysis is a detailed analysis and documentation of the process and the facility housing the process. B.3.2 Each part of the process system is considered for potential deflagration hazard. B.3.2.1 Where the hazard is managed, the means by which it is being managed is documented. B.3.2.2 Where the hazard is not being managed, possible means by which it can be managed should be identified as well as any critical data or parameters that must be quantified before a management method can be applied. B.3.3 Each building compartment, room, or identifiable space should be considered for potential deflagration hazard. B.3.3.1 Where the hazard is managed, the means by which it is being managed is documented. B.3.3.2 Where the hazard is not being managed, possible means by which it can be managed should be identified as well as any critical data or parameters that must be quantified before a management method can be applied. B.3.4 The potential for a dust deflagration should be based upon the potential for all four necessary and sufficient conditions for a deflagration to exist at the point of consideration concurrently. B.3.4.1 The conditions for a deflagration are as follows: (1) A particulate of sufficiently small dimension to propagate a deflagration flame front (2)A means of suspending or dispersing the particulate in air or other oxidizing atmosphere (3) Sufficient quantity of particulate to achieve the minimum explosible concentration (4) Competent source of ignition B.3.4.2 As a general rule in the NFPA standards, there is an assumption that ignition will occur. However, some situations of ignition source control could be determined acceptable by taking into account the consequences (i.e., risk analysis). If a deflagration is possible, the results should be managed in such a way that the objectives of the standard are met. B.3.4.3 The process hazard analysis should classify locations into three general categories: Not a hazard Maybe a hazard Deflagration hazard This will help the owner/operator prioritize management of the hazards. Additionally, it will identify the locations where more information is necessary before a definitive determination can be made. B.3.4.4
B.3 Overview. B.3.1 A process hazard analysis is a detailed analysis and documentation of the process and the facility housing the process. B.3.2 Each part of the process system is considered for potential deflagration hazard. B.3.2.1 Where the hazard is managed, the means by which it is being managed is documented. B.3.2.2 Where the hazard is not being managed, possible means by which it can be managed should be identified as well as any critical data or parameters that must be quantified before a management method can be applied. B.3.3 Each building compartment, room, or identifiable space should be considered for potential deflagration hazard. B.3.3.1 Where the hazard is managed, the means by which it is being managed is documented. B.3.3.2 Where the hazard is not being managed, possible means by which it can be managed should be identified as well as any critical data or parameters that must be quantified before a management method can be applied. B.3.4 The potential for a dust deflagration should be based upon the potential for all four necessary and sufficient conditions for a deflagration to exist at the point of consideration concurrently. B.3.4.1 The conditions for a deflagration are as follows: (1) A particulate of sufficiently small dimension to propagate a deflagration flame front (2)A means of suspending or dispersing the particulate in air or other oxidizing atmosphere (3) Sufficient quantity of particulate to achieve the minimum explosible concentration (4) Competent source of ignition B.3.4.2 As a general rule in the NFPA standards, there is an assumption that ignition will occur. However, some situations of ignition source control could be determined acceptable by taking into account the consequences (i.e., risk analysis). If a deflagration is possible, the results should be managed in such a way that the objectives of the standard are met. B.3.4.3 The process hazard analysis should classify locations into three general categories: Not a hazard Maybe a hazard Deflagration hazard This will help the owner/operator prioritize management of the hazards. Additionally, it will identify the locations where more information is necessary before a definitive determination can be made. B.3.4.4
NFPA%20652_Second%20Draftv4_May14.docx