English to Russian Tech/Engineering Petroleum Eng/Sci oil industry

This is the context: 2.6 Transport
2.6.1 Drilling Rig
Equipment provided by Contractor shall comply with the specifications set out herein.
a) All loads including baskets for transport of the drill string and loose Equipment shall be trailer mounted or skid mounted. All skids shall be suitable for tail-rolling.
b) Any Equipment required to be removed to meet the maximum dimension for transport listed in 2.6.2 and 2.6.3 shall be arranged for ease of removal and should preferable be hinged or retractable.
e) The layout of store units, workshop units and similar skid units should ensure that the weight and centre of gravity of any single unit does not in the course of the Operational Period change such that it exceeds the given parameters. In those circumstances where this is unavoidable, a revised detailed listing highlighting the changes shall be provided before any planned move.
f) Lever type chain binders are not acceptable for securing loads.