Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 4 - Special Detailed Requirements Based on Use and Occupancy
Section 414 - HAZARDOUS MATERIALS
Subsection 414.5 - Inside storage, dispensing and use
Current through Register 1531, September 27, 2024
The inside storage, dispensing and use of hazardous materials in excess of the maximum allowable quantities per control area of Tables 307.1(1) and 307.1(2) shall be in accordance with Sections 414.5.1 through 414.5.5 of this code and the International Fire Code. [F]
414.5.1 Explosion control. Explosion control shall be provided in accordance with the International Fire Code as required by Table 414.5.1 where quantities of hazardous materials specified in that table exceed the maximum allowable quantities in Table 307.1(1) or where a structure, room or space is occupied for purposes involving explosion hazards as required by Section 415 or the International Fire Code. [F]
TABLE 414.5.1 EXPLOSION CONTROL REQUIREMENTSa [F]
MATERIAL | CLASS | EXPLOSION CONTROL METHODS | |
Barricade construction | Explosion (deflagration) venting or explosion (deflagration) prevention systemsb | ||
HAZARD CATEGORY | |||
Combustible dustsc | - | Not Required | Required |
Cryogenic flammables | - | Not Required | Required |
Explosives | Division 1.1 | Required | Not Required |
Division 1.2 | Required | Not Required | |
Division 1.3 | Not Required | Required | |
Division 1.4 | Not Required | Required | |
Division 1.5 | Required | Not Required | |
Division 1.6 | Required | Not Required | |
Flammable gas | Gaseous | Not Required | Required |
Liquefied | Not Required | Required | |
Flammable liquid | IAd | Not Required | Required |
IBe | Not Required | Required | |
Organic peroxides | U | Required | Not Permitted |
I | Required | Not Permitted | |
Oxidizer liquids and solids | 4 | Required | Not Permitted |
Pyrophoric gas | - | Not Required | Required |
Unstable (reactive) | 4 | Required | Not Permitted |
3 Detonable | Required | Not Permitted | |
3 Nondetonable | Not Required | Required | |
Water-reactive liquids and solids | 3 | Not Required | Required |
2g | Not Required | Required | |
SPECIAL USES | |||
Acetylene generator rooms | - | Not Required | Required |
Grain processing | - | Not Required | Required |
Liquefied petroleum gas-distribution facilities | - | Not Required | Required |
Where explosion hazards existf | Detonation | Required | Not Permitted |
Deflagration | Not Required | Required |
a. See Section 414.1.3. b. See the International Fire Code. c. As generated during manufacturing or processing. See definition of "Combustible dust" in Chapter 3. d. Storage or use. e. In open use or dispensing. f. Rooms containing dispensing and use of hazardous materials when an explosive environment can occur because of the characteristics or nature of the hazardous materials or as a result of the dispensing or use process. g. A method of explosion control shall be provided when Class 2 water-reactive materials can form potentially explosive mixtures. |
414.5.2 Monitor control equipment. Monitor control equipment shall be provided where required by the International Fire Code. [F]
414.5.3 Automatic fire detection systems. Group H occupancies shall be provided with an automatic fire detection system in accordance with Section 907.2. [F]
414.5.4 Standby or emergency power. Where mechanical ventilation, treatment systems, temperature control, alarm, detection or other electrically operated systems are required, such systems shall be provided with an emergency or standby power system in accordance with Chapter 27. [F]
Exceptions:
414.5.5 Spill control, drainage and containment. Rooms, buildings or areas occupied for the storage of solid and liquid hazardous materials shall be provided with a means to control spillage and to contain or drain off spillage and fire protection water discharged in the storage area where required in the International Fire Code. The methods of spill control shall be in accordance with the International Fire Code. [F]