216. On a Chemical Tanker suitable for carrying 'special requirement' cargoes as per Chapter 15 of the IBC Code, such as Acrylonitrile, (most Chemical Tankers are), it is required that in addition to the SCBA sets used for firefighting, 3 additional SCBA sets (+ protective clothing) are carried for use in entering gas filled compartments. These SCBA sets should be inspected: