3. In regulation 2(1) of the Offshore Installations (Safety Case) Regulations (Northern Ireland) 1993(1), for the definition of “diving bell” there shall be substituted the following definition –
““diving bell” means any compression chamber which is capable of being manned and is used or designed for use under the surface of water in supporting human life being a chamber in which any occupant is or may be subjected to a pressure of more than 300 millibars above atmospheric pressure during normal operation;”.
S.R. 1993 No. 221 as amended by S.R. 1995 No. 340, S.R. 1995 No. 345, S.R. 1996 No. 228 and S.R. 1999 No. 150