We are designing a barge loading/unloading slip. The product will be used motor oil. The barge slip will be protected by fire monitors. These will be supplied by a fire water pump house.
Due to space limitations, the pump house will be within a 50-ft radius of the corner of a barge (potential fire source).
The pump house will enclose two diesel pumps and day tanks and will be sprinkler protected. Only three walls of the pump house will fall within the 50-ft circle.
Question 1) NFPA Table 220.127.116.11.2 would dictate a 2-hour fire-resistance rating needed, but the IBC would lead you to believe a 1-hour rating is required. Can someone clarify which is required?
Question 2) Do all the walls and the roof need to meet the rating?
The simple solution would be to make everything a 2-hour rating. However, the pump house will have a 10'x10' door, roof hatches, and ventilation louvers. Placing these on the wall opposite to the fire source and outside of the 50 ft. circle would greatly simplify the design.
Thank you in advance!
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