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 1525, July 5, 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:
1. Mechanical ventilation for storage of
				Class IB and Class IC flammable and combustible liquids in closed containers
				not exceeding 6.5 gallons (25 L) capacity.
2. Storage areas for Class 1 and 2
				oxidizers.
3. Storage areas for
				Class II, III, IV and V organic peroxides.
4. Storage, use and handling areas for
				asphyxiant, irritant and radioactive gases.
5. For storage, use and handling areas for
highly
toxic
or
toxic
materials, see Sections 3704.2.2.8 and 3704.3.4.2 of the
International
				Fire Code
.
6. Standby
				power for mechanical ventilation, treatment systems and temperature control
				systems shall not be required where an
approved
fail-safe
				engineered system is installed.