MSC 85/26/Add.2 ANNEX 3 RESOLUTION MSC.268(85) - US Coast ...
MSC 85/26/Add.2 ANNEX 3 RESOLUTION MSC.268(85) - US Coast ... MSC 85/26/Add.2 ANNEX 3 RESOLUTION MSC.268(85) - US Coast ...
MSC 85/26/Add.2ANNEX 3Page 325.4.2 For trimming purposes, solid bulk cargoes can be categorized as cohesive ornon-cohesive. The angle of repose is a characteristic of non-cohesive bulk cargoes which isindicative of cargo stability and has been included in the individual schedules for non-cohesivecargoes. The angle of repose of the cargoes shall establish which provisions of this sectionapply. Methods for determining the angle of repose are given in section 6.5.4.3 Non-cohesive bulk cargoes having an angle of repose less than or equal to 30ºThese cargoes, which flow freely like grain, shall be carried according to the provisionsapplicable to the stowage of grain cargoes * . The bulk density of the cargo shall be taken intoaccount when determining:.1 the scantlings and securing arrangements of divisions and bin bulkheads; and.2 the stability effect of free cargo surfaces.5.4.4 Non-cohesive bulk cargoes having an angle of repose greater than 30° to 35° inclusiveThese cargoes shall be trimmed according to the following criteria:.1 the unevenness of the cargo surface measured as the vertical distance (∆h)between the highest and lowest levels of the cargo surface shall not exceed B/10,where B is the beam of the ship in metres, with a maximum allowable ∆h = 1.5 m;or.2 loading is carried out using trimming equipment approved by the competentauthority.5.4.5 Non-cohesive bulk cargoes having an angle of repose greater than 35°These cargoes shall be trimmed according to the following criteria:.1 the unevenness of the cargo surface measured as the vertical distance (∆h)between the highest and lowest levels of the cargo surface shall not exceed B/10,where B is the beam of the ship in metres, with a maximum allowable ∆h = 2 m;or.2 loading is carried out using trimming equipment approved by the competentauthority.*Reference is made to chapter VI of the SOLAS Convention, and the International Code for the Safe Carriage ofGrain in Bulk adopted by the Maritime Safety Committee of the Organization by resolution MSC.23(59).I:\MSC\85\26-Add-2.doc
MSC 85/26/Add.2ANNEX 3Page 33Section 6Methods of determining the angle of repose6.1 GeneralAn angle of repose of a non-cohesive solid bulk material shall be measured by a methodapproved by the appropriate authority as required by section 4.1.4 of this Code.6.2 Recommended test methodsThere are various methods in use to determine the angle of repose for non-cohesive solid bulkmaterials. The recommended test methods are listed below:6.2.1 Tilting box methodThis laboratory test method is suitable for non-cohesive granular materials with a grain size notgreater than 10 mm. A full description of the equipment and procedure is given in subsection 2.1of appendix 2.6.2.2 Shipboard test methodIn the absence of a tilting box apparatus, an alternative procedure for determining theapproximate angle of repose is given in subsection 2.2 of appendix 2.I:\MSC\85\26-Add-2.doc
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<strong>MSC</strong> <strong>85</strong>/<strong>26</strong>/<strong>Add.2</strong><strong>ANNEX</strong> 3Page 325.4.2 For trimming purposes, solid bulk cargoes can be categorized as cohesive ornon-cohesive. The angle of repose is a characteristic of non-cohesive bulk cargoes which isindicative of cargo stability and has been included in the individual schedules for non-cohesivecargoes. The angle of repose of the cargoes shall establish which provisions of this sectionapply. Methods for determining the angle of repose are given in section 6.5.4.3 Non-cohesive bulk cargoes having an angle of repose less than or equal to 30ºThese cargoes, which flow freely like grain, shall be carried according to the provisionsapplicable to the stowage of grain cargoes * . The bulk density of the cargo shall be taken intoaccount when determining:.1 the scantlings and securing arrangements of divisions and bin bulkheads; and.2 the stability effect of free cargo surfaces.5.4.4 Non-cohesive bulk cargoes having an angle of repose greater than 30° to 35° inclusiveThese cargoes shall be trimmed according to the following criteria:.1 the unevenness of the cargo surface measured as the vertical distance (∆h)between the highest and lowest levels of the cargo surface shall not exceed B/10,where B is the beam of the ship in metres, with a maximum allowable ∆h = 1.5 m;or.2 loading is carried out using trimming equipment approved by the competentauthority.5.4.5 Non-cohesive bulk cargoes having an angle of repose greater than 35°These cargoes shall be trimmed according to the following criteria:.1 the unevenness of the cargo surface measured as the vertical distance (∆h)between the highest and lowest levels of the cargo surface shall not exceed B/10,where B is the beam of the ship in metres, with a maximum allowable ∆h = 2 m;or.2 loading is carried out using trimming equipment approved by the competentauthority.*Reference is made to chapter VI of the SOLAS Convention, and the International Code for the Safe Carriage ofGrain in Bulk adopted by the Maritime Safety Committee of the Organization by resolution <strong>MSC</strong>.23(59).I:\<strong>MSC</strong>\<strong>85</strong>\<strong>26</strong>-Add-2.doc
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