) (i) Check that the centre to centre spacing of the bolts on the pitch circle is not too great [end of C1. 3.21.4.1 referring to Cl. 3.21.6.2 and Cl. 3.21.11.2 for notation Table B3 assuming flange steel is same steel as vessel, and Table 3.21.11.4 for properties of gasket materials when used on flanges with full face gaskets]. (ii) Check that there is adequate spanner room (refer to the tables for spanner (aka wrench) clearances given in the e-reserve reference in Activity 6F of Topic 6)