On one of my project Client is asking for foam chamber protection for vertical storage tank (storing chemical) of 4m dia and 10m length. Calculating as per NFPA 11 the flow requirement of foam solution = 8.2 gpm. Normally foam chamber are not available with such small flow rate. My questions are:
1) Is it reasonable to protect tanks with such small diameter by foam chamber.
2) Normally what type of protection is useful for these types of small diameter tanks.
Appreciate your support.