Regulation 41 RevocationI1 Northern Ireland The Gas Safety (Installation and Use) Regulations (Northern Ireland) 1997f1 are hereby revoked. Annotations Commencement I1 Reg. 41 in operation at 29.3.2004, see reg. 1 Footnotes f1 S.R. 1997 No. 194 ← Regulation 40 Regulation 41 Signature →