Sch 3 para 6
(1) In order to determine the appropriate category for classification of pressure equipment coming within regulations 6(a) to (c), the manufacturer must refer to the following tables within Schedule 1B to these Regulations— (a) for pressure equipment coming within— (i) regulation 6(a)(i)(aa), table 1; (ii) regulation 6(a)(i) (bb), table 2; (iii) regulation 6(a)(ii)(aa), table 3; (iv) regulation 6(a)(ii)(bb), table 4; (v) regulation 6(b), table 5; (vi) regulation 6(c)(i)(aa), table 6; (vii) regulation 6(c)(i)(bb), table 7; (viii) regulation 6(c)(ii)(aa), table 8; (ix) regulation 6(c)(ii)(bb), table 9; (b) for pressure equipment coming within regulation 6(d), the category must be determined in accordance with paragraphs 2 and 3 of Schedule 1B to these Regulations. (2) Where a vessel is composed of a number of chambers, it must be classified in the highest category applicable to the individual chambers and, where a chamber contains several fluids, classification must be on the basis of the fluid which requires the highest category.