Fixtures & Water HeatersPregunta 81 de 120
A restaurant installs a grease interceptor sized for 30 minutes of retention. If the connected fixtures produce a peak flow of 25 gallons per minute through the flow control device, what liquid capacity does the retention rule call for?
a.250 gallons
b.500 gallons
c.750 gallons
d.1,500 gallons
Explicación
Retention volume equals flow rate times retention time, so 25 gpm times 30 minutes equals 750 gallons. 250 gallons corresponds to only 10 minutes of retention and 500 gallons to 20 minutes, both short of the design basis stated in the question. 1,500 gallons would represent a full hour of retention, twice what was specified.
Practica las 120 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- A showerhead is rated at the maximum allowable flow. A user showers for 8 minutes. Assuming the head flows at its rated maximum, how much water is used?
- A public restroom is fitted with metering faucets. What is the maximum volume of water each faucet may deliver per metering cycle?
- A closet flange is set on a wood subfloor before the finished tile is installed, and the installer plans to seal the closet to the flange. Which practice is correct?
- A grease interceptor is inspected and found to contain accumulated grease and settled solids filling 25 percent of the total liquid depth. What action does the common maintenance standard require?
- A residence has a pressure reducing valve with a check on the incoming water service, and the 40 gallon water heater's relief valve has begun weeping each evening. What is the most likely cause and the correct correction?
- A three compartment pot sink and a food prep sink are being connected in a commercial kitchen. How must the waste from food handling equipment such as a food prep sink be connected to the drainage system?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con Journeyman Plumber Licensing Exam (UPC/IPC-based) · Cómo revisamos