MSC 85/26/Add.2 ANNEX 3 RESOLUTION MSC.268(85) - US Coast ...

MSC 85/26/Add.2ANNEX 3Page 339.2 cylindrical vessels;.3 indicators (penetration bits and a holder);.4 a tamper (see 1.1.2.4); and.5 ancillary equipment (see 1.1.2.5 to .8)..2 The vibrator (see figure 1.2.2.2), with a table on which a cylindrical vessel canbe clamped, should be capable of exciting a mass of 30 kg at a frequency ofeither 50 Hz or 60 Hz with an acceleration of 3g rms or more, and it can becontrolled to adjust the acceleration level..3 Dimensions of cylindrical vessels (see figures 1.2.2.3-1 and 1.2.2.3-2) are asfollows:Cylinder size Inner diameter Depth Wall thicknesssmalllarge146 mm194 mm202 mm252 mm9.6 mm or more10.3 mm or moreThe vessels should be made of reasonably rigid, non-magnetic, impermeable andlightweight material such as acrylics or vinyl chloride.The small cylindrical vessel is selected for the materials having a maximumparticle size of 10 mm or less. The large cylindrical vessel is for those having amaximum particle size of 25 mm or less..4 Penetration bits (see figure 1.2.2.4) are made of brass. The mass of the bit for coalshould be adjusted to 88 g (5 kPa), and that for concentrates to 177 g (10 kPa).When the sample contains coarse particles, it is recommended that two bits of thesame pressure are put on the surface to avoid misjudgment..5 A holder (see figure 1.2.2.5) should be made to guide the rod of a bit withminimum friction to the centre of a cylindrical vessel. When two bits are used,they should be positioned in accordance with figure 1.2.2..6 A cylindrical vessel and penetration indicators should be selected in accordancewith the nature and condition of the test sample, viz. size of particles andbulk density.I:\MSC\85\26-Add-2.doc