NICET Special Hazards II case studies
NICET Special Hazards II · Put your knowledge to work in context.
The NICET Special Hazards Systems certification is one of the fire protection and building systems programs offered by the National Institute for Certification in Engineering Technologies (NICET). It is designed for technicians and technologists who work with special hazard fire suppression systems-such as clean agent, carbon dioxide, foam, and dry chemical systems-covering design, installation, inspection, testing, and maintenance. The NICET Special Hazards II case studies are 5 cases and about 2,401 words.
1Clean Agent Hold-Time Failure in a Data Hall
A 6,000 ft³ data hall (30 ft by 20 ft by 10 ft) is protected by a pre-engineered FM-200 total-flooding system designed for 7.0 percent concentration and a 10-minute hold time. The room has a raised floor, a suspended ceiling, one double-leaf door with a 1.5-inch undercut, two 3-inch conduit sleeves that were added for new network cabling, and a return-air grille with no damper.
526 words, about 3 min2CO2 Total-Flooding System in a Paint Booth
A high-pressure CO2 total-flooding system protects a 2,160 ft³ paint spray booth (20 ft by 12 ft by 9 ft). The system has six 75-pound cylinders, a 30-second pre-discharge alarm, and a calculated discharge time of 45 seconds.
507 words, about 3 min3Wet Chemical Kitchen System Expansion
A restaurant has an existing wet chemical system under a 12-foot hood. The cylinder is a 1.5-gallon unit with a listed configuration for one fryer and one range, plus a plenum nozzle and a duct nozzle.
469 words, about 2 min4Foam System Change to Ethanol Service
An existing foam-water deluge system protects a 60-foot-diameter open-top floating-roof tank containing gasoline. The system uses 3 percent AFFF supplied by a bladder tank, a ratio controller, and eight foam makers on the rim seal.
450 words, about 2 min5Air-Aspirating Detection and Clean Agent Cross-Zoning
A 10,000 ft² data center is protected by a clean agent system with air-aspirating smoke detection (ASD). The ASD has four sampling pipes, 18 capillary sampling points, and a 320-foot longest pipe run.
449 words, about 2 min