UpCodes logo
Go To Full Code Chapter
66.6.4.1 General
Operations involving ignitible (flammable or combustible) liquids shall be reviewed to ensure that fire and explosion hazards are addressed by fire prevention, fire control, and emergency action plans, except as provided in 66.6.4.1.1. [30:6.4.1]
66.6.4.1.1
The requirement in 66.6.4.1 shall not apply to the following:
  1. Operations where liquids are used solely for on-site consumption as fuels.
  2. Operations where Class II or Class III liquids [FP ≥ 100°F (37.8°C)] are stored in atmospheric tanks or transferred at temperatures below their flash points.
  3. Mercantile occupancies, crude petroleum exploration, drillings, and well servicing operations, and normally unoccupied facilities in remote locations.
[30:6.4.1.1]
66.6.4.1.2 Engineering Evaluation
66.6.4.1.2.1*
The extent of fire prevention and control that is provided shall be determined in consultation with the AHJ or by means of an engineering evaluation of the operation and application of sound fire protection and process engineering principles. [30:6.4.1.2.1]
66.6.4.1.2.2
An engineering evaluation shall include, but not be limited to, the following:
  1. Analysis of the fire and explosion hazards of the operation
  2. Analysis of emergency relief from process vessels, taking into consideration the properties of the materials used and the fire protection and control measures taken
  3. Analysis of applicable facility design requirements in Chapters 17, 18, 19, 28, and 29 of NFPA 30
  4. Analysis of applicable requirements for liquid handling, transfer, and use, as covered in Chapters 17, 18, 19, 28, and 29 of NFPA 30
  5. Analysis of local conditions, such as exposure to and from adjacent properties and exposure to floods, earthquakes, and windstorms
  6. Analysis of the emergency response capabilities of the local emergency services
[30::6.4.1.2.2]
66.6.4.1.3*
Storage, processing, handling, and use of Class II and Class III liquids [FP ≥ 100°F (37.8°C)] heated at or above their flash point shall follow the requirements for Class I liquids [FP < 100°F (37.8°C)], unless an engineering evaluation conducted in accordance with Section 66.6 justifies following the requirements for some other liquid class. [30:6.4.1.3]
66.6.4.2 Management of Change
The hazards analysis shall be repeated whenever the hazards leading to a fire or explosion change significantly. Conditions that might require repeating a review shall include, but are not limited to, the following:
  1. When changes occur in the materials in process
  2. When changes occur in process equipment
  3. When changes occur in process control
  4. When changes occur in operating procedures or assignments
[30:6.4.2]

Related Code Sections

66.6.4 Flammable and Combustible Liquids, Hazards Analysis
of the fire and explosion hazards of the operation Analysis of emergency relief from process vessels, taking into consideration the properties ...
66.6.4 Flammable and Combustible Liquids, Hazards Analysis
] An engineering evaluation shall include, but not be limited to, the following: Analysis of the fire and explosion hazards ...
52.3.2.4 Energy Storage Systems, Hazard Mitigation Analysis
A failure mode and effects analysis (FMEA) or other approved hazard mitigation analysis shall be provided to the AHJ when any of the following ...