Measurement of fluid flow in closed conduits. Velocity area methods, Method of measurement of velocity at one point of a conduit of circular cross section— 20 стр.
Equipment used in the controlled removal of asbestos-containing materials. Operation, cleaning and maintenance of class H vacuum cleaners. Code of practice— 16 стр.
Safety of electrical motor-operated industrial and commercial cleaning appliances. Particular requirements, Specification for type H industrial vacuum cleaners for dusts hazardous to health— 16 стр.