• January 3rd, 2017

Engineering assignment

Paper , Order, or Assignment Requirements

1. Using NFPA 17 and Ansul Criteria provided in the PPT, design a system for an area 25 ft. wide, 20ft. long, and 12 feet high, with 210 square feet of un-enclosable area. You must address and show your work for determining the volume of the hazards (5pts), interior surface area (5pts), percentage of un-enclosable area (5pts), minimum amount of dry agent required (5pts), minimum amount to cover un-enclosable area (5pts), total amount of agent required (5pts) and the minimum number of nozzles (5pts).
2. A valuable painting is in a display case 5 ft. wide, 6 ft. long, and 5 ft. tall, elevated 1 ft. above a solid floor. The case is centered in a 10 ft. long by 10 ft. wide enclosure with 8 ft. high walls on all sides. Use the rate-by-volume method of local application to calculate flow rate and the total amount of carbon dioxide required, assuming a discharge time of 30 seconds.

3. The case in problem 1 has been moved to a very large room with no walls near the case, and with the case mounted directly to the floor. Use the rate-by-volume method of local application to calculate flow rate and total amount of carbon dioxide required, assuming a discharge time 45 seconds.

4. Use the rate-by-area method to determine the minimum amount of carbon dioxide required to protect a diptank 45 ft. long and 5 ft. wide, and a dranboard 10 ft. long and 5 ft. wide, using a discharge time of 30 seconds.

5. Determine the minimum total flooding design quantity of Carbon Dioxide agent required for a room containing Acetylene that is 15 ft. long, 15 ft. wide, and 12 ft. in height. The structure has a 5 sq. ft. opening whose center is 5 ft. below the ceiling of the enclosure. The temperature for the enclosure is 210oF

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