13.—(1) For the purposes of regulation 7(3)(b), the appropriate conformity assessment procedure for pressure equipment shall be one of the procedures set out in Schedule 4 as determined in accordance with paragraph (3).
(2) The manufacturer shall apply either,
(i)one of the conformity assessment procedures which may be chosen from among those laid down in paragraph (3) for the category in which the pressure equipment is classified, or
(ii)one of the procedures which apply to a higher category of pressure equipment, if available.
(3) The relevant conformity assessment procedures set out in Schedule 4 to be applied for the various categories of pressure equipment determined in accordance with regulation 12 above are as follows:
(i)for category I, module A;
(ii)for category II, any of the following modules:
A1,
D1, or
E1;
(iii)for category III, any of the following modules:
B1 plus D,
B1 plus F,
B plus E,
B plus C1, or
H;
(iv)for category IV, any of the following modules:
B plus D,
B plus F,
G, or
H1.