scope:

The scope of this publication is limited to systems that supply electrical power to petroleum processing plants. It provides a basis for those specifications that industry and engineering contractors develop for inclusion in construction contracts. Guidance as to the special equipment needs that arc characteristic of processing plants is given to electrical manufacturers. Operation and maintenance problems are dealt with only insofar as they affect system and equipment selection. The requirements for the electrical power supply to instruments, instrument devices. and instrument panel boards are included.

Purpose

Electrical engineers in the petroleum industry have a major responsibility for safety. Electrical installations and equipment situated in hazardous locations must be designed to prevent accidental ignition of flammable liquids. gases. or vapors. Protection from any such occurrence demands constant vigilance. a thorough knowledge of electricity in its broader aspects, and an understanding of the properties of flammable liquids. gases, and vapors.

Petroleum processing requires specialized equipment that continuously processes, at high rates and at elevated temperatures and pressures, liquids and vapors that undergo both chemical and physical changes. During "abnormal" conditions. the composition and properties of these materials may change drastically. To maintain safety and operating continuity, standards of petroleum processing plant designs are more stringent than those for other operations within the petroleum industry.