Flammable solids are any materials in the solid phase of matter that can readily undergo combustion in the presence of a source of ignition under standard circumstances, i.e. without:
Artificially changing variables such as pressure or density; or
Flammable solids are any of the following four types of materials:
Desensitized Explosives: explosives that, when dry, are Explosives of Class 1 other than those of compatibility group A, which are wetted with sufficient water, alcohol, or plasticizer to suppress explosive properties; and are specifically authorized by name either in the 49CFR 172.101 Table or have been assigned a shipping name and hazard class by the Associate Administrator for Hazardous Materials Safety.
Self-Reactive Materials: materials that are thermally unstable and that can undergo a strongly exothermic decomposition even without participation of oxygen (air). Certain exclusions to this group do apply under 49 CFR.
Generic Types: Division 4.1 self-reactive materials are assigned to a generic system consisting of seven types. A self-reactive substance identified by technical name in the Self-Reactive Materials Table in 49CFR 173.224 is assigned to a generic type in accordance with that Table. Self-reactive materials not identified in the Self-Reactive Materials Table in 49CFR 173.224 are assigned to generic types under the procedures of paragraph (a)(2)(iii) of this section.
Readily Combustible Solids: materials that are solids which may cause a fire through friction, such as matches; show a burning rate faster than 2.2 mm (0.087 inches) per second when tested in accordance with UN Manual of Tests and Criteria; or are any metal powders that can be ignited and react over the whole length of a sample in 10 minutes or less, when tested in accordance with UN Manual of Tests and Criteria.
Type
Description
Type A
Self-reactive material type A is a self-reactive material which, as packaged for transportation, can detonate or deflagrate rapidly. Transportation of type A self-reactive material is forbidden.
Type B
Self-reactive material type B is a self-reactive material which, as packaged for transportation, neither detonates nor deflagrates rapidly, but is liable to undergo a thermal explosion in a package.
Type C
Self-reactive material type C is a self-reactive material which, as packaged for transportation, neither detonates nor deflagrates rapidly and cannot undergo a thermal explosion.
Type D
Self-reactive material type D is a self-reactive material which:
Detonates partially, does not deflagrate rapidly and shows no violent effect when heated under confinement;
Does not detonate at all, deflagrates slowly and shows no violent effect when heated under confinement; or
Does not detonate or deflagrate at all and shows a medium effect when heated under confinement.
Type E
Self-reactive material type E is a self-reactive material which, in laboratory testing, neither detonates nor deflagrates at all and shows only a low or no effect when heated under confinement.
Type F
Self-reactive material type F is a self-reactive material which, in laboratory testing, neither detonates in the cavitated state nor deflagrates at all and shows only a low or no effect when heated under confinement as well as low or no explosive power.
Type G
Self-reactive material type G is a self-reactive material which, in laboratory testing, does not detonate in the cavitated state, will not deflagrate at all, shows no effect when heated under confinement, nor shows any explosive power. A type G self-reactive material is not subject to the requirements of this subchapter for self-reactive material of Division 4.1 provided that it is thermally stable (self-accelerating decomposition temperature is 50 °C (122 °F) or higher for a 50 kg (110 pounds) package). A self-reactive material meeting all characteristics of type G except thermal stability is classed as a type F self-reactive, temperature control material.
Division 4.2: Spontaneously Combustible
Spontaneously combustible material is:
Pyrophoric Material: A pyrophoric material is a liquid or solid that, even in small quantities and without an external ignition source, can ignite within five (5) minutes after coming in contact with air when tested according to the UN Manual of Tests and Criteria.
Self-Heating Material: A self-heating material is a material that, when in contact with air and without an energy supply, is liable to self-heat.
Division 4.3: Dangerous When Wet
Dangerous when wet material is material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 liter per kilogram of the material, per hour, when tested in accordance with the UN Manual of Tests and Criteria. Pure alkali metals are known examples of this.
Placardsedit
Hazardous Materials
Class 4.1: Flammable Solids
Hazardous Materials
Class 4.2: Spontaneously Combustible Solids
Hazardous Materials
Class 4.3: Dangerous when Wet
Compatibility Tableedit
Load and Segregation Chart
Weight
1.1
1.2
1.3
1.4
1.5
1.6
2.1
2.2
2.2
2.3
3
4.1
4.2
4.3
5.1
5.2
6.1
7
8
A
B
A
4.1
1,001 lb (454 kg)
O
O
4.2
1,001 lb (454 kg)
O
O
4.3
Any quantity
O
O
Key
The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply.
X: These materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.
O: Indicates that these materials may not be loaded, transported or stored together in the same transport vehicle or storage facility during the course of transportation, unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur.
Source: United States Code of Federal Regulations, Title 49 CFR §177.848 - Segregation of hazardous materials.[1]
hazmat, class, flammable, solids, flammable, solids, materials, solid, phase, matter, that, readily, undergo, combustion, presence, source, ignition, under, standard, circumstances, without, artificially, changing, variables, such, pressure, density, adding, a. Flammable solids are any materials in the solid phase of matter that can readily undergo combustion in the presence of a source of ignition under standard circumstances i e without Artificially changing variables such as pressure or density or Adding accelerants Contents 1 Divisions 2 Placards 3 Compatibility Table 4 ReferencesDivisions editDivision 4 1 Flammable SolidFlammable solids are any of the following four types of materials Desensitized Explosives explosives that when dry are Explosives of Class 1 other than those of compatibility group A which are wetted with sufficient water alcohol or plasticizer to suppress explosive properties and are specifically authorized by name either in the 49CFR 172 101 Table or have been assigned a shipping name and hazard class by the Associate Administrator for Hazardous Materials Safety Self Reactive Materials materials that are thermally unstable and that can undergo a strongly exothermic decomposition even without participation of oxygen air Certain exclusions to this group do apply under 49 CFR Generic Types Division 4 1 self reactive materials are assigned to a generic system consisting of seven types A self reactive substance identified by technical name in the Self Reactive Materials Table in 49CFR 173 224 is assigned to a generic type in accordance with that Table Self reactive materials not identified in the Self Reactive Materials Table in 49CFR 173 224 are assigned to generic types under the procedures of paragraph a 2 iii of this section Readily Combustible Solids materials that are solids which may cause a fire through friction such as matches show a burning rate faster than 2 2 mm 0 087 inches per second when tested in accordance with UN Manual of Tests and Criteria or are any metal powders that can be ignited and react over the whole length of a sample in 10 minutes or less when tested in accordance with UN Manual of Tests and Criteria Type DescriptionType A Self reactive material type A is a self reactive material which as packaged for transportation can detonate or deflagrate rapidly Transportation of type A self reactive material is forbidden Type B Self reactive material type B is a self reactive material which as packaged for transportation neither detonates nor deflagrates rapidly but is liable to undergo a thermal explosion in a package Type C Self reactive material type C is a self reactive material which as packaged for transportation neither detonates nor deflagrates rapidly and cannot undergo a thermal explosion Type D Self reactive material type D is a self reactive material which Detonates partially does not deflagrate rapidly and shows no violent effect when heated under confinement Does not detonate at all deflagrates slowly and shows no violent effect when heated under confinement or Does not detonate or deflagrate at all and shows a medium effect when heated under confinement Type E Self reactive material type E is a self reactive material which in laboratory testing neither detonates nor deflagrates at all and shows only a low or no effect when heated under confinement Type F Self reactive material type F is a self reactive material which in laboratory testing neither detonates in the cavitated state nor deflagrates at all and shows only a low or no effect when heated under confinement as well as low or no explosive power Type G Self reactive material type G is a self reactive material which in laboratory testing does not detonate in the cavitated state will not deflagrate at all shows no effect when heated under confinement nor shows any explosive power A type G self reactive material is not subject to the requirements of this subchapter for self reactive material of Division 4 1 provided that it is thermally stable self accelerating decomposition temperature is 50 C 122 F or higher for a 50 kg 110 pounds package A self reactive material meeting all characteristics of type G except thermal stability is classed as a type F self reactive temperature control material Division 4 2 Spontaneously CombustibleSpontaneously combustible material is Pyrophoric Material A pyrophoric material is a liquid or solid that even in small quantities and without an external ignition source can ignite within five 5 minutes after coming in contact with air when tested according to the UN Manual of Tests and Criteria Self Heating Material A self heating material is a material that when in contact with air and without an energy supply is liable to self heat Division 4 3 Dangerous When WetDangerous when wet material is material that by contact with water is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 liter per kilogram of the material per hour when tested in accordance with the UN Manual of Tests and Criteria Pure alkali metals are known examples of this Placards edit nbsp Hazardous MaterialsClass 4 1 Flammable Solids nbsp Hazardous MaterialsClass 4 2 Spontaneously Combustible Solids nbsp Hazardous MaterialsClass 4 3 Dangerous when WetCompatibility Table editLoad and Segregation Chart Weight 1 1 1 2 1 3 1 4 1 5 1 6 2 1 2 2 2 2 2 3 3 4 1 4 2 4 3 5 1 5 2 6 1 7 8A B A4 1 1 001 lb 454 kg nbsp nbsp nbsp nbsp O nbsp O4 2 1 001 lb 454 kg nbsp nbsp nbsp O nbsp nbsp O nbsp nbsp 4 3 Any quantity nbsp nbsp nbsp nbsp nbsp O nbsp OKeyThe absence of any hazard class or division or a blank space in the table indicates that no restrictions apply X These materials may not be loaded transported or stored together in the same transport vehicle or storage facility during the course of transportation O Indicates that these materials may not be loaded transported or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that in the event of leakage from packages under conditions normally incident to transportation commingling of hazardous materials would not occur Source United States Code of Federal Regulations Title 49 CFR 177 848 Segregation of hazardous materials 1 References edit Pipeline and Hazardous Materials Safety Administration PHMSA October 1 2011 49 CFR 177 848 Segregation of hazardous materials PDF Government Publishing Office p 853 Archived from the original PDF on 16 July 2019 Retrieved 16 July 2019 49 CFR 173 124 a 49 CFR 173 124 b 49 CFR 173 124 c Retrieved from https en wikipedia org w index php title HAZMAT Class 4 Flammable solids amp oldid 1064267708, wikipedia, wiki, book, books, library,
