|
Chapter 21
Criteria for assigning carriage requirements for products subject to the IBC Code
21.1 Introduction
21.1.1 The following criteria are guidelines for the determination of pollution classification and assignment of appropriate carriage requirements for bulk liquid cargoes being considered as candidates for entry into the IBC Code or annexes 1, 3 or 4 of MEPC.2/Circs.
21.1.2 In developing such criteria, every effort has been made to follow the criteria and cut off points developed under the Global Harmonized System (GHS).
21.1.3 Although the criteria are intended to be closely defined in order to establish a uniform approach, it must be emphasized that these are guidelines only and, where human experience or other factors indicates the need for alternative arrangements, these shall always be taken into account. Where deviations from the criteria have been recognized, they shall be properly recorded with justifications.
21.2 Contents
21.2.1 This chapter contains the following:
.1 minimum safety and pollution criteria for products subject to chapter 17 of the IBC Code;
.2 criteria used to assign the minimum carriage requirements for products, which meet the safety or pollution criteria to make them subject to chapter 17 of the IBC Code;
.3 criteria used for special requirements in chapter 15 of the IBC Code to be included in column o of chapter 17 of the IBC Code;
.4 criteria used for special requirements in chapter 16 of the IBC Code to be included in column o of chapter 17 of the IBC Code; and
.5 definitions of properties used within this chapter.
21.3 Minimum safety and pollution criteria for products subject to chapter 17 of the IBC Code
21.3.1 Products are deemed to be hazardous and subject to chapter 17 of the IBC Code if they meet one or more of the following criteria:
.1 inhalation LC50 ≤20 mg/l/4 h (see definitions in paragraph 21.7.1.1);
.2 dermal LD50 ≤2000 mg/kg (see definitions in paragraph 21.7.1.2);
.3 oral LD50 ≤2000 mg/kg (see definitions in paragraph 21.7.1.3);
.4 toxic to mammals by prolonged exposure (see definitions in paragraph 21.7.2);
.5 cause skin sensitization (see definitions in paragraph 21.7.3);
.6 cause respiratory sensitization (see definitions in paragraph 21.7.4);
.7 corrosive to skin (see definitions in paragraph 21.7.5);
.8 have a Water Reactive Index (WRI) of ≥1 (see definitions in paragraph 21.7.6);
.9 require inertion, inhibition, stabilization, temperature control or tank environmental control in order to prevent a hazardous reaction (see definitions in paragraph 21.7.10);
.10 flash point <23℃; and have an explosive/flammability range (expressed as a percentage by volume in air) of ≥20%;
.11 autoignition temperature of ≤200℃; and
.12 classified as pollution category X or Y or meeting the criteria for rules 11 to 13 under paragraph 21.4.5.1.
21.4 Criteria used to assign the minimum carriage requirements for products, which meet the minimum safety or pollution criteria to make them subject to chapter 17 of the IBC Code
21.4.1 Column a - Product Name
21.4.1.1 The International Union of Pure and Applied Chemistry (IUPAC) name shall be used as far as possible but, where this is unnecessarily complex, then a technically correct and unambiguous alternative chemical name may be used.
21.4.2 Column b - Deleted.
21.4.3 Column c - Pollution Category
21.4.3.1 Column c identifies the pollution category assigned to each product under Annex II of MARPOL 73/78.
21.4.4 Column d - Hazards
21.4.4.1 An "S" is assigned to column d if any of the safety criteria described in paragraphs 21.3.1.1 to 21.3.1.11 are met.
21.4.4.2 A "P" is assigned to column d if the product meets the criteria for assigning Ship Type 1 3 as defined by rules 1 to 14 in paragraph 21.4.5.
21.4.5 Column e - Ship Type
21.4.5.1 The basic criteria for assigning Ship Types based on the GESAMP Hazard Profile are shown in the table below. An explanation of the details in the columns is provided in appendix 1 of MARPOL Annex II. Selected rules, identified in this table, are specified in section 21.4.5.2 for assigning specific Ship Types.
| Rule Number |
A1 |
A2 |
B1 |
B2 |
D3 |
E2 |
Ship Type |
| 1 |
|
|
≥5 |
|
|
|
1 |
| 2 |
≥4 |
NR |
4 |
|
CMRTNI |
|
| 3 |
≥4 |
NR |
|
|
CMRTNI |
|
2 |
| 4 |
|
|
4 |
|
|
|
| 5 |
≥4 |
|
3 |
|
|
|
| 6 |
|
NR |
3 |
|
|
|
| 7 |
|
|
|
≥1 |
|
|
| 8 |
|
|
|
|
|
Fp |
| 9 |
|
|
|
|
CMRTNI |
F |
| 10 |
|
|
≥2 |
|
|
S |
| 11 |
≥4 |
|
|
|
|
|
3 |
| 12 |
|
NR |
|
|
|
|
| 13 |
|
|
≥1 |
|
|
|
| 14 |
All other category Y Substances |
| 15 |
All other category Z Substances
All "Other Substances" (OS) |
NA |
|
21.4.5.2 The Ship Type is assigned according to the following criteria:
Ship Type 1:
Inhalation LC50 ≤0.5 mg/l/4 h; and/or
Dermal LD50 ≤50 mg/kg; and/or
Oral LD50 ≤ 5 mg/kg; and/or
Autoignition temperature ≤65℃; and/or
Explosive range ≥50% v/v in air and the flash point <23℃; and/or
Rules 1 or 2 of the table shown in 21.4.5.1
Ship Type 2:
Inhalation LC50 >0.5mg/l/4 h - ≤2mg/l/4 h; and/or
Dermal LD50 >50mg/kg - ≤ 1000 mg/kg; and/or
OralLD50 >5mg/kg - ≤ 300 mg/kg; and/or
WRI=2;
Autoignition temperature ≤200℃; and/or
Explosive range ≥40% v/v in air and the flash point <23℃; and/or
Any of the rules 3 to 10 of the table shown in 21.4.5.1
Ship Type 3:
Any of the minimum safety or pollution criteria for bulk liquid cargoes subject to chapter 17 of the IBC Code not meeting the requirements for ship types 1 or 2 and not meeting rule 15 of the table shown in 21.4.5.1.
21.4.6 Column f - Tank type
21.4.6.1 The tank type is assigned according to the following criteria:
Tank type 1G:
Inhalation LC50 ≤0.5 mg/l/4 h; and/or
Dermal LD50 ≤ 200 mg/kg); and/or
Autoignition temperature ≤65℃; and/or
Explosive range ≥40% v/v in air and the flash point <23℃; and/or
WRI=2
Tank type 2G:
Any of the minimum safety or pollution criteria for bulk liquid cargoes subject to chapter 17 or the IBC Code not meeting the requirements for tank type 1G.
21.4.7 Column g - Tank vents
21.4.7.1 The tank venting arrangements are assigned according to the following criteria:
Controlled:
Inhalation LC50 ≤ 10 mg/l/4 h; and/or
Toxic to mammals by prolonged exposure; and/or
Respiratory sensitizer; and/or
Special carriage control needed; and/or
Flash point ≤60℃
Corrosive to skin (≤ 4 h exposure)
Open:
Any of the minimum safety or pollution criteria for bulk liquid cargoes subject to chapter 17 or the IBC Code not meeting the requirements for controlled tank vents.
21.4.8 Column h - Tank environmental control
21.4.8.1 The Tank environmental control conditions are assigned according to the following criteria:
Inert: Autoignition temperature ≤200℃; and/or
Reacts with air to cause a hazard; and/or
Explosive range ≥40% and the flash point <23℃.
Dry: WRI≥1
Pad: Only applies to specific products identified on a case by case basis.
Vent: Only applies to specific products identified on a case by case basis.
No:
Where the above criteria do not apply, (inerting requirements may be required under SOLAS)
21.4.9 Column i - Electrical equipment
21.4.9.1 If the flash point of the product is ≤ 60℃ or the product is heated to within 15℃ of its flash point then the electrical equipment required are assigned according to the following criteria, else '-' is assigned in column i' and i''.÷
.1 Column i' - Temperature class:
T1 Autoignition temperature ≥ 450℃
T2 Autoignition temperature ≥ 300℃ but < 450℃
T3 Autoignition temperature ≥ 200℃ but < 300℃
T4 Autoignition temperature ≥ 135℃ but < 200℃
T5 Autoignition temperature ≥ 100℃ but < 135℃
T6 Autoignition temperature ≥ 85℃ but < 100℃
.2 Column i'' - Apparatus group:
| Apparatus group |
MESG at 20℃
(mm) |
MIC ratio
product/methane |
| IIA |
≥0.9 |
>0.8 |
| IIB |
>0.5 to <0.9 |
≥0.45 to ≤0.8 |
| IIC |
≤0.5 |
<0.45 |
|
.2.1 The tests shall be carried out in accordance with the procedures described in IEC 60079-1-1:2002 and IEC 79-3.
.2.2 For gases and vapours it is sufficient to make only one determination of either the Maximum Experimental Safe Gap (MESG) or the Minimum Igniting Current (MIC) provided that:
for Group IIA: the MESG > 0.9 mm or the MIC ratio >0.9.
for Group IIB: the MESG is ≥0.55 mm and ≤0.9 mm; or the MIC ratio is ≥0.5 and ≤0.8.
for Group IIC: the MESG is <0.5 mm or the MIC ratio is <0.45.
.2.3 It is necessary to determine both the MESG and the MIC ratio when:
.1 The MIC ratio determination only has been made, and the ratio is between 0.8 and 0.9, when an MESG determination will be required;
.2 The MIC ratio determination only has been made, and the ratio is between 0.45 and 0.5, when an MESG determination will be required;
or
.3 The MESG only has been found, and is between 0.5 mm and 0.55 mm, when an MIC ratio determination will be required.
.3 Column Ii''' Flash point:
> 60 ℃ :Yes
≤ 60 ℃ :No
Non-flammable :NF
21.4.10 Column j - Gauging
21.4.10.1 The type of gauging equipment permitted is assigned according to the following criteria:
Closed: Inhalation LC50 ≤ 2 mg/l/4hr; and/or
Dermal LD50 ≤ 1000 mg/kg; and/or
Toxic to mammals by prolonged exposure; and/or
Respiratory sensitizer; and/or
Corrosive to skin (≤ 3 min exposure).
Restricted: Inhalation LC50 >2 - ≤ 10 mg/l/4h; and/or
Special carriage control indicates Inerting required; and/or
Corrosive to skin (>3 min - ≤1 h exposure); and/or
Flash point ≤60℃.
Open:
Any of the minimum safety or pollution criteria for bulk liquid cargoes subject to chapter 17 or the IBC Code not meeting the requirements for closed or restricted gauging.
21.4.11 Column k - Vapour detection
21.4.11.1 The type of vapour detection equipment required is determined by the following criteria:
Toxic (T) : Inhalation LC50 ≤ 10 mg/l/4 h, and/or
Respiratory sensitizer; and/or
Toxic by prolonged exposure.
Flammable (F) : Flash point ≤60℃
No : Where the above criteria do not apply.
21.4.12 Column l - Fire protection equipment
21.4.12.1 The appropriate fire-fighting media are defined as being appropriate according to the following criteria related to the properties of the product:
Solubility >10% (>100000 mg/l) : A Alcohol-resistant foam.
Solubility <10% (<100000 mg/l) : A Alcohol-resistant foam; and/or
: B Regular foam.
WRI = 0 : C Water spray (generally used as a coolant and can be used with A and/or B providing that the WRI=0).
WRI ≥1 : D Dry chemical.
No : No requirements under this Code.
Note: all appropriate media shall be listed.
21.4.13 Column m - Deleted.
21.4.14 Column n - Emergency Equipment
21.4.14.1 The requirement to have personnel emergency equipment on board is identified by 'Yes' in column on according to the following criteria:
Inhalation LC50 ≤2 mg/l/4 h; and/or
Respiratory sensitizer; and/or
Corrosive to skin (≤ 3 min exposure); and/or
WRI=2
No: indicates that the above criteria do not apply.
|
