English term
'fair head'
a) Maximum gross weight 36 metric tonnes.
b) Maximum dimensions 3.5 m wide x 12.2 m long x 6 m high.
c) Maximum width of skid beams 3 m.
d) Maximum overall width up to 4 metres above ground level 10 metres.
e) Drill string baskets and accessories baskets should have provision for stacking.
f) Skid noses shall be constructed with a minimum radius of 2.5 times the diameter of the wire rope used for lifting the equipment. Slings in general use for tail rollers to be constructed from 28mm 1WPC wire rope. Where rope slings pass over skid beams, the beam edges should have radius 'fair head' pads to prevent damage to the slings.
4 +1 | 'смягчающие' (радиальные) прокладки | mk_lab |
Aug 24, 2009 09:06: mk_lab changed "Field (specific)" from "Petroleum Eng/Sci" to "Mechanics / Mech Engineering"
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