API SIEE - Source Inspector Electrical Equipment Course
API SIEE - Source Inspector Electrical Equipment Course Fees 450 $ | API SIEE - Source Inspector Electrical Equipment Course Exam Fees 415 $ | API SIEE - Source Inspector Electrical Equipment Course Duration 15 Days | API SIEE - Source Inspector Electrical Equipment Course Location Muscat
PURPOSE
This recommended practice provides information on electrical installations in petroleum facilities. Petroleum processing requires specialized equipment that continually processes, often at high rates and elevated temperatures and pressures, liquids, and gases that undergo both chemical and
physical changes. Consequently, it is necessary that electrical installations and equipment in petroleum facilities be designed to prevent accidental ignition of flammable liquids and gases.
To maintain safety and operating continuity, requirements for the electrical systems in petroleum facilities are more stringent than those for most other manufacturing facilities. This recommended practice addresses specific requirements for those electrical systems.
SCOPE
This recommended practice is limited to electrical installations in petroleum facilities. It provides a basis for specifications included in engineering and construction contracts. Electrical equipment test standards are excluded from the scope of this recommended practice. Operation and maintenance are addressed only insofar as they affect electrical system design and electrical equipment selectionT. he subject of
energy conservation is reviewed.
CLASSIFICATION OF FLAMMABLE AND COMBUSTIBLE LIQUIDS AND GASES
Note: Classifications used for defining liquids and gases should not be confused with the NFPA 70 classifications used for hazardous (classified) locations.
Definition of Flammable Liquids
API SIEE - Source Inspector Electrical Equipment Course As defined by NFPA 30, flammable liquids are liquids that have a flash point belo3w7 3°C (100°F) and a vapor pressure not exceeding 276 kilopascals absolute (40 pounds per square inch absolute) at 373°C (100°F). These liquids are divided into the following general classes:
a. Class IA includes the liquids that have flashpoints below 223°C (73°F) and boiling points belo3w7 3°C (100°F).
b. Class IB includes the liquids that have flash points below 223°C (73°F) and boiling points at or above 373°C (100°F).
c. Class IC includes the liquids that have flash points at or above 223°C (73°F) and boiling points belo3w7 3°C (100°F).
Definition of Combustible Liquids
As defined by NFPA 30, combustible liquids are liquids that have flash points at or above 373°C (100°F). These liquids are also divided into general classes:
a. Class II includes the liquids that have flash points at or above 37.8"C (100°F) and boiling points below 60°C (140°F).
b. Class Ill includes the liquids that have flash points above 60°C ( 140"F), and ClasIsI I liquids are subdivided as follows:
- Class IL4 includes the liquids that have flash points at or above 60°C (140°F) and boiling points below 93.3"C (200°F).
- Class IIIB includes the liquids that have flash points at or above 93.3"C( 200°F)
Flammable Gases-Lighter-than-Air
Lighter-than-air gases that commonly are encountered include methane and a mixture of methane with small quantities of low-molecular-weight hydrocarbons, the mixtures generally being lighter-than-air. Hydrogen must be given a special mixture consideration because of its properties: a wide flammable (explosive)-mixture range, a high flame propagation velocity, a low vapor density, a low minimum ignition- energy level, and a relatively high ignition temperature [585"C (1085"F)].
Flammable Gases-Heavier-than-Air
Liquefied petroleum gases include propanes, butanes, and mixtures of the two having densities from 1.5 times to approximately 2.0 times that of air. Vapor pressures of these gases exceed 276 kilopascals absolute (4 0 pounds per square inch absolute) at 37.8"C (100°F).
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