Global Dry Bulk Network

Ground Granulated Blast Furnace Slag Powder

GROUND GRANULATED BLAST FURNACE SLAG POWDER

IMSBC GroupA
UN NumberNot set
ClassNot applicable
Subsidiary HazardNot applicable
MHBNot applicable
Physical SizeFine powder
Angle of ReposeNot applicable
Bulk Density (kg/m³)847 to 1,205
Stowage Factor (m³/t)0.83 to 1.18
Harmful to Marine EnvironmentNot set
Effective StatusExisting from MSC.539(107)
IMSBC Amendment07-23
Voluntary Application From2024-01-01
Mandatory From2025-01-01
Group AClass Not applicableMHB: Not applicableExisting from MSC.539(107)
Cargo photo

Schedule source MSC.539(107), Annex 9, Appendix 1, IMSBC Code Amendment 07-23 · pages 260, 261

Description

Secondary names: Fine slag powder or Water slag powder. Ground granulated blast furnace slag powder, used for cement or concrete, is a fine ground powder that is obtained by physical grinding of granular slag. White to grey.

Hazard

This cargo may liquefy if shipped at a moisture content in excess of its transportable moisture limit (TML). See sections 7 and 8 of IMSBC Code. This cargo may shift when aerated. Dust can be a major concern during loading and discharge if the ship is not specially constructed for dry powdery cargoes or shore equipment is not fitted with special dust control equipment. This cargo is non-combustible or has a low fire risk.

Stowage and Segregation

No special requirements.

Hold Cleanliness

Clean and dry as relevant to the hazards of the cargo.

Weather Precautions

When this cargo is carried in a ship other than a ship complying with the requirements in 7.3.2 or a ship complying with the requirements in 7.3.3 of IMSBC Code, the following provisions shall be complied with: .1 the moisture content of the cargo shall be kept less than its TML during loading operations and the voyage; .2 unless expressly provided otherwise in this individual schedule, the cargo shall not be handled during precipitation; .3 unless expressly provided otherwise in this individual schedule, during handling of the cargo, all non-working hatches of the cargo spaces into which the cargo is loaded, or to be loaded, shall be closed; .4 the cargo may be handled during precipitation under the conditions stated in the procedures required in 4.3.3 of IMSBC Code; and .5 the cargo in a cargo space may be discharged during precipitation provided that the total amount of the cargo in the cargo space is to be discharged in the port.

Loading

Trim in accordance with the relevant provisions required under sections 4 and 5 of IMSBC Code. The ship carrying this cargo shall not depart until the cargo has settled.

Precautions

Appropriate precautions shall be taken to protect machinery and accommodation spaces from the dust of the cargo. Bilge wells of the cargo spaces shall be protected from ingress of the cargo. Due consideration shall be given to protect equipment from the dust of the cargo. Persons who may be exposed to the dust of the cargo shall wear protective clothing, goggles or other equivalent dust eye-protection and dust filter masks, as necessary. Bilge wells shall be clean, dry and covered as appropriate to prevent ingress of the cargo.

Ventilation

The cargo spaces carrying this cargo shall not be ventilated during the voyage.

Carriage

After the completion of loading of this cargo, the hatches of the cargo spaces shall be sealed, as necessary. All vents and access ways to the cargo spaces shall be shut during the voyage.

Discharge

During discharge, particular attention shall be given to the dust of the cargo.

Clean-up

The water used for the cleaning of the cargo spaces, after discharge of this cargo, shall not be pumped by the fixed bilge pumps. A portable pump shall be used, as necessary, to clear the cargo spaces of the water.

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