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Schematic of a permanent magnet motor using brushes and magnets in the stator. A permanent magnet motor is a type of electric motor that uses permanent magnets for the field excitation and a wound armature. The permanent magnets can either be stationary or rotating; interior or exterior to the armature for a radial flux machine or layered with ...
The removal of one of these conditions will greatly reduce the risk of a fire or explosion. Since the combustible dust cannot be eliminated, there is the possibility to use inert gases or to eliminate ignition sources. Spark extinguishing systems are established as preventive fire and explosion protection systems in the industry and craft.
Engineered fire suppression systems are design specific and most commonly used for larger installations where the system is designed for a particular application. Examples include large marine and land vehicle applications, server rooms, public and private buildings, industrial paint lines, dip tanks and electrical switch rooms.
An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by a pulse of electric current in a wire winding around part of the magnet. The magnet consists of two sections, one of "hard" (high coercivity) magnetic material and one of "soft" (low coercivity) material. The ...
The Los Angeles Fire Department's budget was cut by $17.6 million, about 2%, this fiscal year. The fire chief warned last month it would make it harder to respond to emergencies.
Suitably qualified and experienced fire protection engineers may qualify for registration as a professional engineer. The recognition of fire protection engineering as a separate discipline varies from state to state in the United States. [24] NCEES recognizes Fire Protection Engineering as a separate discipline and offers a PE exam subject. [25]
A new long-acting preventive HIV drug could reach the world’s poorest countries by the end of 2025 or early 2026, a global health official told Reuters on Tuesday. The ambition is to start ...
A man who assaulted a 71-year-old market trader following an argument over a phone charger has been jailed for three years. The victim was working on his Hyson Green market stall in Nottingham ...