s 93I Definitions for purposes of Chapter 3A
(1) In this Chapter— “ approved ”, in relation to a device, means approved by the Secretary of State; “ drug ” includes any intoxicant other than alcohol; “ medical establishment ” means any facility at which medical or surgical treatment for in- or out-patients is provided; “ preliminary test ” means— a preliminary breath test within the meaning of section 93B; a preliminary impairment test within the meaning of section 93C; or a preliminary drug test within the meaning of section 93D; “ safety-critical duty ” means a duty which the commanding officer of the person mentioned in section 93A(1) , 93AA(6)(a) or 93E(1) reasonably believes is such that performing the duty with ability impaired by alcohol or drugs would result in a risk of— death; serious injury to any person; serious damage to property; or serious environmental harm; “ service police establishment ” means any building or part of a building, any structure, or any room (whether on land or on a ship) which is used by a service policeman for the performance of his duties. (2) In this Chapter any reference to a service policeman includes a Royal Navy coxswain.