# 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

Engineering assignment

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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