Excellence Engineering provides hazardous area classification studies for petrochemical, refinery, midstream and all other oil & gas related facilities. The purpose of the Hazardous Area Classification Study is to define the hazardous area for the installation of mechanical, electrical and control system equipment. The analysis is performed utilizing the facility material balance, process flow diagram, component safety data sheets, facility equipment plan and national standards API RP500 Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, NFPA 30 Flammable and Combustible Liquids Code, NFPA 497 Recommended Practice for Classification of Flammable Liquids, Gases and Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas.
Results of the Hazardous Area Classification Study are used to prepare an overall area classification drawing along with details defining area boundaries for potential leakage sources. Typical deliverables to support equipment layout, mechanical equipment specification, I&E equipment specification, I&E detail design and construction include a hazardous area classification report, overall area classification plans and specific source related details that define area boundaries for various sources. The report and drawings will determine the required wiring method, enclosure type, maximum surface temperature and sealing requirements for mechanical, electrical and control system equipment in order to ensure the safe operation of the facility.