1. Regulations 4 and 5(1) and (4) shall not apply to–
(a)pressure systems to which the Medical Devices Regulations 1994(1) apply, other than those which contain or are liable to contain steam; or
(b)pressure equipment or assemblies within the meaning of the Pressure Equipment Regulations 1999 to which regulation 7(1), 8(1), 9(1) or 10 of those Regulations apply.
2.—(1) Subject to sub-paragraph (2), regulations 5(4), 8 to 10 and 14 shall not apply to a pressure system containing a relevant fluid (other than steam) if the product of the pressure in bar and internal volume in litres of its pressure vessels is in each case less than 250 bar litres.
(2) Until 21st August 2000 regulations 8 to 10 and 14 shall not apply to a pressure system brought into operation before the coming into force of these Regulations if the product of the pressure in bar and internal volume of its pressure vessel with the largest internal volume is less than 250 bar litres.
3. Regulations 4, 5, 7 to 10, 13 and 14 shall not apply to a tank container if–
(a)it is intended to be used in the carriage of dangerous goods to which the Carriage of Dangerous Goods by Road Regulations 1996 apply, or would apply but for an exception specified in paragraph 1 of Schedule 2 thereof and is present solely for the purpose of being loaded with the goods to be carried; or
(b)it has been used in such carriage, has been temporarily removed from a vehicle and is present solely for the purpose of unloading the goods from it.