AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3
11 DECEMBER 2001
A4.3.5. Hazard Classification of Class 5.2 Organic Peroxides. Class 5.2 organic peroxides are categorized into
one of seven "types" in a system of generic proper shipping names. The generic PSN for the organic peroxide
describes the physical state of the material (i.e., liquid or solid), provides an indication of controlled temperature
requirements, and includes the "type" of the organic peroxide. The seven types of organic peroxides are described in
attachment 1. Transport all Class 5.2 material under one of the generic proper shipping names listed in table A4.1
beginning with the words "ORGANIC PEROXIDE". Technical names are listed below each PSN in lower case
letters. To determine the correct PSN:
Find the technical name in table A9.1 and select the UN identification number assigned to the technical
name that best describes the item (in terms of concentration ranges, physical characteristics, etc).
Turn to the "ORGANIC PEROXIDE" listed in table A4.1. These entries constitute the "generic" organic
peroxide proper shipping names.
Match the UN identification number for the technical name with a UN identification number associated
with the generic PSN.
The generic PSN associated with organic peroxides will include the "type" under which the organic
peroxide falls. Organic peroxide types are defined in attachment 1.
A4.3.6. Hazard Classification of Fissile Materials. Except as provided in A126.96.36.199, classify each package of
fissile materials as fissile class I, II, or III. Determine the numerical values for package assignments as fissile class
I, the transport indexes for fissile class II packages, and the conveyance limitations for fissile class III shipments
according to 10 CFR Part 71.
Fissile Class I. Packages may be transported in unlimited numbers, and in any arrangement, and require
no nuclear criticality safety controls during transportation. A transport index is not assigned to fissile class
I packages for the purpose of nuclear criticality safety control, although, the external radiation levels may
require a transport index number.
Fissile Class II. Packages may be transported together in any arrangement, but in numbers that are not
over an aggregate transport index of 50. For the purposes of nuclear criticality safety control, individual
packages may have a transport index of not less than 0.1 and not more than 10. However, the external
radiation levels may require a higher transport index number. These shipments require no nuclear
criticality safety control by the shipper during transportation.
Fissile Class III. Shipments of packages of fissile materials that do not meet the requirements of fissile
class I or fissile class II and are controlled in transit as prescribed in A188.8.131.52 by appropriate arrangements
between the shipper and the carrier.
A4.4. Determining Degree of Hazard (PG). For most material, the PG is assigned in column 5 of table A4.1.
Packing groups I, II, and III indicate the degree of hazard associated with the materials and are used to identify the
severity of UN specification performance tests associated with the packaging for the item. Poisonous by inhalation
material are assigned hazard zones (see attachment 1) in table A4.1. If unknown, the PG or hazard zone may be
determined according to this paragraph. Class 2, and 7 do not have packing groups.
A4.4.1. Class 2 Hazard Zone. The hazard zone of a Class 2.3 material is given in column 7 of table A4.1. When
column 7 of table A4.1 provides more than one hazard zone or is blank, determine the hazard zone from figure A4.2.
There are no hazard zones for Class 2.1 and 2.2.
Figure A4.2. Determination of Hazard Zone for Class 2.3.
Inhalation Toxicity (parts per million)
LC50 less than or equal to 200 ppm
LC50 greater than 200 ppm and less than or equal to 1000 ppm
LC50 greater than 1000 ppm and less than or equal to 3000 ppm
LC50 greater than 3000 ppm or less than or equal to 5000 ppm
A4.4.2. Class 3 Packing Groups. When table A4.1 lists more than one PG for a material, or indicates that the PG
is to be determined on the basis of the PG criteria for Class 3, determine the PG by using figure A4.4. To use figure
A4.3, match the initial boiling point of the material to the flash point, and assign the corresponding PG. Flash points
may be determined from the material safety data sheet, DoD 6050.5 Hazardous Material Information System, the
National Fire Protection Guide, or markings on the package. For example, a Class 3 material with an initial boiling