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 28.3 composition of the material and its variability;.4 the manner in which the material is stored, in stockpiles, rail wagons or othercontainers, and transferred or loaded by material-handling systems such asconveyors, loading chutes, crane grabs, etc.;.5 the chemical hazards (toxicity, corrosivity, etc.);.6 the characteristics which have to be determined: moisture content, TML, bulkdensity/stowage factor, angle of repose, etc.;.7 variations in moisture distribution throughout the consignment which may occurdue to weather conditions, natural drainage, e.g., to lower levels of stockpiles orcontainers, or other forms of moisture migration; and.8 variations which may occur following freezing of the material.4.4.5 Throughout the sampling procedures, utmost care shall be taken to prevent changes inquality and characteristics. Samples shall be immediately placed in suitable sealed containerswhich are properly marked.4.4.6 Unless expressly provided otherwise, sampling for the test required by this Code shallfollow an internationally or nationally accepted standard procedure.4.5 Interval between sampling/testing and loading for TML and moisture contentdetermination4.5.1 A test to determine the TML of a solid bulk cargo shall be conducted within six months tothe date of loading the cargo. Notwithstanding this provision, where the composition orcharacteristics of the cargo are variable for any reason, a test to determine the TML shall beconducted again after it is reasonably assumed that such variation has taken place.4.5.2 Sampling and testing for moisture content shall be conducted as near as practicable to thetime of loading. If there has been significant rain or snow between the time of testing andloading, check tests shall be conducted to ensure that the moisture content of the cargo is still lessthan its TML. The interval between sampling/testing and loading shall never be morethan seven days.4.5.3 Samples of frozen cargo shall be tested for the TML or the moisture content after the freemoisture has completely thawed.4.6 Sampling procedures for concentrate stockpiles4.6.1 It is not practicable to specify a single method of sampling for all consignments since thecharacter of the material and the form in which it is available will affect the selection of theprocedure to be used. In the absence of internationally or nationally accepted standard samplingprocedures, the following sampling procedures for concentrate stockpiles may be used todetermine the moisture content and the TML of mineral concentrates. These procedures are notintended to replace sampling procedures, such as the use of automatic sampling, that achieveequal or superior accuracy of either moisture content or TML.I:\MSC\85\26-Add-2.doc
MSC 85/26/Add.2ANNEX 3Page 294.6.2 Sub-samples are taken in a reasonably uniform pattern, where possible froma levelled stockpile.4.6.3 A plan of the stockpile is drawn and divided into areas, each of which containsapproximately 125 t, 250 t or 500 t depending on the amount of concentrate to be shipped.Such a plan will indicate the number of sub-samples required and where each is to be taken.Each sub-sample taken is drawn from approximately 50 cm below the surface of thedesignated area.4.6.4 The number of sub-samples and sample size are given by the competent authority ordetermined in accordance with the following scale:Consignments of not more than 15,000 t:One 200 g sub-sample is taken for each 125 t to be shipped.Consignments of more than 15,000 but not more than 60,000 t:One 200 g sub-sample is taken for each 250 t to be shipped.Consignments of more than 60,000 t:One 200 g sub-sample is taken for each 500 t to be shipped.4.6.5 Sub-samples for moisture content determination are placed in sealed containers (such asplastic bags, cans or small metallic drums) immediately on withdrawal for conveyance to thetesting laboratory, where they are thoroughly mixed in order to obtain a fully representativesample. Where testing facilities are not available at the testing site, such mixing is done undercontrolled conditions at the stockpile and the representative sample placed in a sealed containerand shipped to the test laboratory.4.6.6 Basic procedural steps include:.1 identification of consignment to be sampled;.2 determination of the number of individual sub-samples and representativesamples, as described in 4.6.4, which are required;.3 determination of the positions from which to obtain sub-samples and the methodof combining such sub-samples to arrive at a representative sample;.4 gathering of individual sub-samples and placing them in sealed containers;.5 thorough mixing of sub-samples to obtain the representative sample; and.6 placing the representative sample in a sealed container if it has to be shipped to atest laboratory.I:\MSC\85\26-Add-2.doc
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- Page 56 and 57: MSC 85/26/Add.2ANNEX 3Page 56APPEND
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<strong>MSC</strong> <strong>85</strong>/<strong>26</strong>/<strong>Add.2</strong><strong>ANNEX</strong> 3Page 28.3 composition of the material and its variability;.4 the manner in which the material is stored, in stockpiles, rail wagons or othercontainers, and transferred or loaded by material-handling systems such asconveyors, loading chutes, crane grabs, etc.;.5 the chemical hazards (toxicity, corrosivity, etc.);.6 the characteristics which have to be determined: moisture content, TML, bulkdensity/stowage factor, angle of repose, etc.;.7 variations in moisture distribution throughout the consignment which may occurdue to weather conditions, natural drainage, e.g., to lower levels of stockpiles orcontainers, or other forms of moisture migration; and.8 variations which may occur following freezing of the material.4.4.5 Throughout the sampling procedures, utmost care shall be taken to prevent changes inquality and characteristics. Samples shall be immediately placed in suitable sealed containerswhich are properly marked.4.4.6 Unless expressly provided otherwise, sampling for the test required by this Code shallfollow an internationally or nationally accepted standard procedure.4.5 Interval between sampling/testing and loading for TML and moisture contentdetermination4.5.1 A test to determine the TML of a solid bulk cargo shall be conducted within six months tothe date of loading the cargo. Notwithstanding this provision, where the composition orcharacteristics of the cargo are variable for any reason, a test to determine the TML shall beconducted again after it is reasonably assumed that such variation has taken place.4.5.2 Sampling and testing for moisture content shall be conducted as near as practicable to thetime of loading. If there has been significant rain or snow between the time of testing andloading, check tests shall be conducted to ensure that the moisture content of the cargo is still lessthan its TML. The interval between sampling/testing and loading shall never be morethan seven days.4.5.3 Samples of frozen cargo shall be tested for the TML or the moisture content after the freemoisture has completely thawed.4.6 Sampling procedures for concentrate stockpiles4.6.1 It is not practicable to specify a single method of sampling for all consignments since thecharacter of the material and the form in which it is available will affect the selection of theprocedure to be used. In the absence of internationally or nationally accepted standard samplingprocedures, the following sampling procedures for concentrate stockpiles may be used todetermine the moisture content and the TML of mineral concentrates. These procedures are notintended to replace sampling procedures, such as the use of automatic sampling, that achieveequal or superior accuracy of either moisture content or TML.I:\<strong>MSC</strong>\<strong>85</strong>\<strong>26</strong>-Add-2.doc
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