Systems & CodeQuestion 34 of 110
A commercial kitchen installs a grease interceptor rated for a flow of 35 gpm. Using the common rule that grease capacity in pounds is about twice the gpm rating, what nominal grease retention does this unit provide, and what is its purpose?
a.35 lb, to trap sand
b.70 lb, to intercept fats, oils and grease
c.150 lb, to neutralize acid
d.300 lb, to settle solids
Explanation
A hydromechanical grease interceptor rated at 35 gpm provides roughly 70 lb of grease retention and its purpose is to intercept fats, oils, and grease before they enter and clog the building drain and public sewer. Interceptors are sized by fixture flow and required retention. Sand interceptors and acid neutralizers serve entirely different wastes.
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