Regulations Supplementary Technical Instruction mi-IP04 vehicle supply facilities Supplementary Technical Instruction mi-ip05 installers or repairers and installers or repair companies of liquid petroleum products Draft Royal Decree on the supplementary technical instruction meep 06 "process out of service for storage tanks of liquid petroleum products" is approved. Varia rules Specification for automatic performance indicator level in a tank. UNE EN 13352 Leak Detection System UNE EN 13160-5 Draft Royal Decree on the MI-IP 04 "vehicle supply facilities" supplementary technical instruction is approved and regulate certain aspects of the regulation of oil rigs .