Regulation 3 Amendment of the principal RegulationsF1 Northern Ireland Repealed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Annotations Textual amendments F1 Regulations revoked (10.7.2017) by The Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations (Northern Ireland) 2017 (S.R. 2017/90), Sch. 8 ← Regulation 2 Regulation 3 Regulation 4 →