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Section 3Section 3 : In this Section you will be to:: In this Section you will be to:
Identify the nine classes of dangerous goods byIdentify the nine classes of dangerous goods by
their principle criteria;their principle criteria;
Recognize the hazard label for each class orRecognize the hazard label for each class or
division of dangerous goods;division of dangerous goods;
Understand and apply the principles of PackingUnderstand and apply the principles of Packing
Groups.Groups.
3. M. Tayfour 3
DGR Classification SystemDGR Classification System
The physical state and physical properties of the
dangerous goods will affect how easily and safety
the goods can be handled in transport, how they
should be packaged and what hazards they
present, especially if spilled.
SolidSolid LiquidLiquid GasGas
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DGR Classification SystemDGR Classification System
The DGR also divides dangerous goods into :
SubstancesSubstances ArticlesArticles
5. • Dangerous Goods are divided into 9
hazard groups called classes .
– Classes 1, 2, 4, 5 and 6 are broken down into
“Divisions” due to hazard variation within
these classes.
• Classes are expressed by single-digit
numbers. (Example Class 7).
• Divisions are expressed by 2-digit
numbers. The first digit identifies the class
number and the second identifies the
division number within that class.
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6. ExampleExample
Class 1, Division 1Class 1, Division 1
would be expressed aswould be expressed as
Division 1.1Division 1.1
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Class 1Class 1
ExplosiveExplosive
Division 1.1
Division 1.2
Division 1.3
Division 1.4
Division 1.5
Division 1.6
Also assigned intoAlso assigned into
13 compatibility13 compatibility
groupsgroups
A, B, C, D, E, F, G, H,A, B, C, D, E, F, G, H,
J, K, L, N, SJ, K, L, N, S
11. Class 1Class 1
ExplosiveExplosive
Explosives which can be carriedExplosives which can be carried
only in cargo Aircraftonly in cargo Aircraft
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DivisionDivision 1.31.3
DivisionDivision 1.41.4
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Class 1Class 1
ExplosiveExplosive
DivisionsDivisions 1.4S1.4S
RXSRXS
It is only oneIt is only one
Accepted toAccepted to
transported intransported in
Passenger AircraftPassenger Aircraft
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33
Flammable LiquidsFlammable Liquids
Cargo IMP CodeCargo IMP Code
RFLRFL
Note : This class has no sub-divisionsNote : This class has no sub-divisions
Class 3Class 3
Flammable LiquidsFlammable Liquids
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General Packing RequirementsGeneral Packing Requirements
• Packing Group High Danger
• Packing Group Medium Danger
• Packing Group Low Danger
I
II
III
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Flammable liquid are assigned to packing groups according
to the flash point and initial boiling point of the liquid
TABLE 3.3.ATABLE 3.3.A
class 3 – Packing Group Assignment (3.3.2.2)
Packing Group Flash Point (closed-cup) Initial Boiling Point
I — ≤ 35°C
II < 23°C
> 35°C
III ≥ 23°C but ≤ 60°C
50. Example AExample A
Base on a recognized laboratory test results, aBase on a recognized laboratory test results, a
liquid is having a flash Point (closed-cup) ofliquid is having a flash Point (closed-cup) of
22.922.9°C°C and as initial boiling point not exceedingand as initial boiling point not exceeding
3838°C°C.. Identify the packing group of thisIdentify the packing group of this
substance ?substance ?
• Packing Group:Packing Group: IIII
Packing Group Flash Point (closed-cup) Initial Boiling Point
I — ≤ 35°C
II < 23°C
> 35°C
III ≥ 23°C but ≤ 60°C
51. Example BExample B
• Flashpoint: 2121°C°C Boiling Point: 37°C
• Packing Group: II
Packing Group Flash Point (closed-cup) Initial Boiling Point
I — ≤ 35°C
II < 23°C
> 35°C
III ≥ 23°C but ≤ 60°C
52. Example CExample C
• Flashpoint: 4040°C°C Boiling Point: 5555°C°C
• Packing Group: IIIIII
Packing Group Flash Point (closed-cup) Initial Boiling Point
I — ≤ 35°C
II < 23°C
> 35°C
III ≥ 23°C but ≤ 60°C
53. Example DExample D
• Flashpoint:Flashpoint: 7272°C°C Boiling Point:Boiling Point: 3737°C°C
• Packing Group:Packing Group:
Not regulated as flammable liquidNot regulated as flammable liquid
Packing Group Flash Point (closed-cup) Initial Boiling Point
I — ≤ 35°C
II < 23°C
> 35°C
III ≥ 23°C but ≤ 60°C
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Class 4Class 4
Flammable SolidFlammable Solid
DivisionsDivisions
4.1 Flammable Solid4.1 Flammable Solid
4.2 Spontaneously Combustible4.2 Spontaneously Combustible
4.3 Dangerous when wet4.3 Dangerous when wet
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Packing Group Criteria for class 6.1Packing Group Criteria for class 6.1
a)a) Packing Group IPacking Group I — Substances and preparations— Substances and preparations
presenting apresenting a very severe toxicity risk;very severe toxicity risk;
b)b) Packing Group IIPacking Group II — Substances and preparations— Substances and preparations
presenting apresenting a serious toxicity risk;serious toxicity risk;
c)c) Packing Group IIIPacking Group III — Substances and preparations— Substances and preparations
presenting a relativelypresenting a relatively low toxicity risk.low toxicity risk.
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Packing Group Criteria for class 6.1Packing Group Criteria for class 6.1
Packing Group
Oral Toxicity LD 50
(mg/kg)
Dermal Toxicity
LD 50 (mg/kg)
Inhalation
Toxicity by
Dusts and Mists
LC 50 (mg/L)
I ≤ 5.0 ≤ 50 ≤ 0.2
II > 5.0 but ≤ 50 > 50 but ≤ 200 > 0.2 but ≤ 2.0
III > 50 but ≤ 300 > 200 but ≤ 1,000 > 2.0 but ≤ 4.0
Table 3.6.ATable 3.6.A
Oral, Dermal and Dust/ Nist inhalation Hazards DivisionOral, Dermal and Dust/ Nist inhalation Hazards Division
6.1 packing group criteria (3.6..1.3)6.1 packing group criteria (3.6..1.3)
78. PackingPacking
GroupGroup OralOral toxicitytoxicity LDLD5050 DermalDermal toxicitytoxicity LDLD5050
InhalationInhalation
toxicitytoxicity LCLC5050
PG IPG I ≤ 5 ≤ 50 ≤ 0.2
PG IIPG II >5 and ≤ 50 > 50 and ≤ 200 > 0.2 and ≤2
PG IIIPG III > 50 and ≤ 300 > 200 and ≤ 1000 > 2 and ≤ 4
TABLE 3.6.ATABLE 3.6.A
Class 6 — Packing GroupClass 6 — Packing Group
AssignmentAssignment
Based onBased on ToxicityToxicity (3.6.3.1)(3.6.3.1)
LDLD5050 : Lethal Dose: Lethal Dose
LCLC5050 : Lethal Concentration: Lethal Concentration
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Packing Group
Oral Toxicity LD 50
(mg/kg)
Dermal Toxicity
LD 50 (mg/kg)
Inhalation
Toxicity by
Dusts and Mists
LC 50 (mg/L)
I ≤ 5.0 ≤ 50 ≤ 0.2
II > 5.0 but ≤ 50 > 50 but ≤ 200 > 0.2 but ≤ 2.0
III > 50 but ≤ 300 > 200 but ≤ 1,000 > 2.0 but ≤ 4.0
Example AExample A
A solid substance is having toxicityA solid substance is having toxicity LDLD5050 of 750 mg/kgof 750 mg/kg
which when in contact with thewhich when in contact with the skinskin can cause death tocan cause death to
humans. What is the packing group assignment for thishumans. What is the packing group assignment for this
substance?substance?
Packing Group: IIIIII
80. Example BExample B
• Oral Toxicity LDOral Toxicity LD5050:: 40 mg/kg40 mg/kg
• Packing group:Packing group: IIII
PackingPacking
GroupGroup OralOral toxicitytoxicity LDLD5050 DermalDermal toxicitytoxicity LDLD5050
InhalationInhalation
toxicitytoxicity LCLC5050
PG IPG I ≤ 5 ≤ 50 ≤ 0.2
PG IIPG II >5 and ≤ 50 > 50 and ≤ 200 > 0.2 and ≤2
PG IIIPG III > 50 and ≤ 300 > 200 and ≤ 1000 > 2 and ≤ 4
81. Example CExample C
• DermalDermal Toxicity LDToxicity LD5050:: 200200 mg/kgmg/kg
• Packing group:Packing group: IIII
PackingPacking
GroupGroup OralOral toxicitytoxicity LDLD5050 DermalDermal toxicitytoxicity LDLD5050
InhalationInhalation
toxicitytoxicity LCLC5050
PG IPG I ≤ 5 ≤ 50 ≤ 0.2
PG IIPG II >5 and ≤ 50 > 50 and ≤ 200 > 0.2 and ≤2
PG IIIPG III > 50 and ≤ 300 > 200 and ≤ 1000 > 2 and ≤ 4
82. Example DExample D
• Oral Toxicity LDOral Toxicity LD5050:: 300 mg/kg300 mg/kg
• Packing group:Packing group: IIIIII
PackingPacking
GroupGroup OralOral toxicitytoxicity LDLD5050 DermalDermal toxicitytoxicity LDLD5050
InhalationInhalation
toxicitytoxicity LCLC5050
PG IPG I ≤ 5 ≤ 50 ≤ 0.2
PG IIPG II >5 and ≤ 50 > 50 and ≤ 200 > 0.2 and ≤2
PG IIIPG III > 50 and ≤ 300 > 200 and ≤ 1000 > 2 and ≤ 4
83. Example DExample D
• OraOral Toxicity LDl Toxicity LD5050:: 4040 mg/kgmg/kg
• DermalDermal ToxicityToxicity LDLD5050:: 300300 mg/kgmg/kg
• InhalationInhalation Toxicity LCToxicity LC5050:: 0.10.1 mg/Lmg/L
• Packing group:Packing group: II
PackingPacking
GroupGroup OralOral toxicitytoxicity LDLD5050 DermalDermal toxicitytoxicity LDLD5050
InhalationInhalation
toxicitytoxicity LCLC5050
PG IPG I ≤ 5 ≤ 50 ≤ 0.2
PG IIPG II >5 and ≤ 50 > 50 and ≤ 200 > 0.2 and ≤2
PG IIIPG III > 50 and ≤ 300 > 200 and ≤ 1000 > 2 and ≤ 4
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Class 7Class 7
Radioactive MaterialRadioactive Material
CategoryCategory
I – WhiteI – White
II - YellowII - Yellow
III – YellowIII – Yellow
Fissile – Criticality Safety IndexFissile – Criticality Safety Index
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88
Corrosive MaterialCorrosive Material
Cargo IMP CodeCargo IMP Code
RCMRCM
Note : This class has no sub-divisionsNote : This class has no sub-divisions
Class 8Class 8
Corrosive MaterialCorrosive Material
108. 109
Class 8Class 8
Corrosive MaterialCorrosive Material
Packing
Group
Exposure Time Observation
Time
Effect
I ≤ 3 min ≤ 60 min
Full thickness destruction of intact
skin
II > 3 min ≤ 60 min ≤ 14 d
Full thickness destruction of intact
skin
III > 60 min ≤ 4 h ≤ 14 d
Full thickness destruction of intact
skin
III
Corrosion rate on steel /aluminum
> 6.25 mm a year at a
test temperature of
55°C
Table 3.8.ATable 3.8.A
Class 8—Packing Group Assignment based on Corrosivity (3.8.3)
109. 110
Packing
Group
Exposure Time Observation
Time
Effect
I ≤ 3 min ≤ 60 min
Full thickness destruction of
intact skin
II > 3 min ≤ 60 min ≤ 14 d
Full thickness destruction of
intact skin
III > 60 min ≤ 4 h ≤ 14 d
Full thickness destruction of
intact skin
III
Corrosion rate on steel
/aluminum
> 6.25 mm a year at a
test temperature of
55°C
Example AExample A
A liquid is liable to damage a material when in contact with a fullA liquid is liable to damage a material when in contact with a full
thickness destruction within an exposure time ofthickness destruction within an exposure time of 180 minutes180 minutes under anunder an
observation time ofobservation time of 3 days3 days. What is the packing group assignment of. What is the packing group assignment of
this substance?this substance?
Packing group:Packing group: IIIIII
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99
Miscellaneous DGMiscellaneous DG
Cargo IMP CodeCargo IMP Code
RMDRMD
Note : This class has no sub-divisionsNote : This class has no sub-divisions
Class 9Class 9
Miscellaneous DGMiscellaneous DG
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DRY ICEDRY ICE
Cargo IMP CodeCargo IMP Code
ICEICE
Note : This class has no sub-divisionsNote : This class has no sub-divisions
Class 9Class 9
Miscellaneous DGMiscellaneous DG
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Magnetized MaterialMagnetized Material
Cargo IMP CodeCargo IMP Code
MAGMAG
Note : This class has no sub-divisionsNote : This class has no sub-divisions
Class 9Class 9
Miscellaneous DGMiscellaneous DG
Handling Label
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EXERCISES
1.1. Give the appropriate Class or Division numberGive the appropriate Class or Division number
and Cargo IMP codes for the following:and Cargo IMP codes for the following:
(a) Toxic substances …………….(a) Toxic substances …………….
(b) Corrosive ……………………...(b) Corrosive ……………………...
(c) Radioactive material …………(c) Radioactive material …………
(d) Carbon Dioxide, Solid (Dry Ice)(d) Carbon Dioxide, Solid (Dry Ice) ……………..……………..
(e) Non-Flammable , non-toxic Gas ……………(e) Non-Flammable , non-toxic Gas ……………
135. SummarySummary
• Describe the nine hazard classes of dangerous
goods and their divisions
• Describe the physical properties of each hazard
class/div and give examples
• Identify packing groups
• Determine the hazard class, subsidiary risk,
and packing group of a given material
Go to paragraph 2.4 after the list of hazard classes.
Packing groups are used to rank how dangerous an item is within its hazard class/division.
Not all hazard classes/divisions have packing groups. (Classes 1, 2, 5.2, 6.2, 7, and self-reactive of Div 4.1 do not.)
Packing Group I is the most hazardous, Packing Group 3 is the least hazardous—but is still a dangerous good.
The packing group is used for just that—packing. It will determine how stringent the packaging must be and will dictate the allowable net quantity in the packagings. It will even help determine whether or not a dangerous good is allowed on passenger aircraft or cargo aircraft.