[ad_1]
A pharmaceutical warehouse stores cartoned, pharmaceutical plastic bottles stored in single and double-row racks without solid shelves to a height of 35-ft under a 40-ft ceiling.
a. Per NFPA 13, what is the acceptable design criteria for control mode density area (CMDA) ordinary-temperature sprinklers for the storage scenario above? Are in-rack sprinklers required? If so, how many rows of in-rack sprinklers are required?
b. Per NFPA 13, what is the acceptable design criteria for control mode specific application (CMSA) ordinary-temperature sprinklers for the storage scenario above? Are in-rack sprinklers required? If so, how many? If not, explain why.
c.If ESFR K-25.2 sprinklers were used, would in-rack sprinklers be required? Describe the difference in protection requirements between using K14.0 and K25.2 ESFR sprinklers at the ceiling. Explain.
- If in-rack sprinklers are installed, would the required density of an ordinary temperature CMDA ceiling sprinkler change between a storage height of 30 ft verses 75 ft? Why or why not?
3.An existing manufacturing warehouse (Area 1) has a wet sprinkler systeminstalled utilizing K-8.0 CMDA standard response high temperature (286°F) sprinklers with a design criteria of 0.2 gpm/3000 ft . An adjacent portion of thewarehouse has been renovated (Area 2) to now store commodities in plastic totes. The existing sprinklers in this area have been replaced with K-16.8 ESFR sprinklers with an ordinary temperature rating (165°F). There is no separation between the two areas of the warehouse. Identify and explain the issues that this scenario presents should a fire ignite in Area 1 near the boundary of Area 2 Provide potential solutions.
4.Per NFPA 13, how many in-rack sprinklers need to be considered in system hydraulic calculations for a warehouse containing double row rack storage of finished leather goods stored to a maximum height of 29-ft? One level of in-rack sprinklers is installed midway up the rack structure. Control mode density/area sprinklers are installed at the ceiling.
- Determine the discharge criteria for the following double-row rack storage configuration using control mode sprinklers. Empty 5-liter plastic containers placed in cardboard boxes directly on traditional wood pallets. Nominal 6-inch transverse and longitudinal flue spaces maintained throughout the racks. Maximum storage heights will not exceed 19 ft under a 25 ft ceiling. Racks separated by 4-ft aisles.
6.A warehouse distribution facility stores automotive lead acid batteries directly on traditional wood pallets on double row open frame racks (nominal 6-inch transverse and longitudinal flue spaces provided) to a height of 25 ft under a 30 ft ceiling. A four-foot aisle separates the rows of racks. The space is reliably heated to maintain a temperate of 68 deg F at all times. Ceiling construction is unobstructed and noncombustible. Determine the following using NFPA 13 as well as FM Global criteria for a CMSA sprinkler of your choice.
a.Design / discharge criteria.
b.Design Area
c. Number of sprinklers
d.Maximum Area of coverage per sprinkler
e.Minimum ceiling water flow demand (ignore pressure losses due to friction,elevation and fittings)
f. Hose stream demand
G.Water supply duration
H.Total required minimum water supply (ignore pressure losses due to friction, elevation and fittings)
Present your findings in a matrix format, and provide appropriate code references.
7.Consider a warehouse storing small kitchen appliances such as blenders, toaster ovens and coffee makers placed in corrugated cardboard cartons on wooden shelves up to a height of 15-ft. Determine the following per NFPA requirements:
a.What is an acceptable discharge criteria (density and area) for a wet pipe system using standard temperature sprinklers?
b.Are k-5.6 sprinklers permitted at the ceiling?
c.Would a 10-ft x 12-ft sprinkler spacing be permitted? What about a 12-ft by 14-ft spacing?
d.If k-5.6 sprinklers are used, what would the minimum flow and pressure required at the most remote sprinkler?
e.In general, how would the requirements change if the storage height was 8-ft instead of 15-ft?
Sample Solution
The post Fire Protection Systems appeared first on acestar tutors.
[ad_2]
Source link