Final answer:
The specific quantity of fuel-oil storage inside a building varies by local fire codes and regulations. Under the EPA's SPCC Rule, a written SPCC plan is required for facilities that store over 1,320 gallons above ground or more than 42,000 gallons below ground, with secondary containment measures. Always check local regulations for the exact quantity limit.
Step-by-step explanation:
The quantity of fuel-oil that can be stored inside any building varies depending on local regulations and building codes. However, the quantity you are referring to is likely based on requirements set forth by fire codes or the Environmental Protection Agency (EPA) regulations under the Spill Prevention, Control, and Countermeasure Rule (SPCC). The SPCC Rule generally applies to facilities that store large amounts of oil that could reasonably be expected to discharge into navigable waters or adjoining shorelines.
For example, facilities are required to have a written SPCC plan if they store more than 1,320 gallons of fuel above ground or more than 42,000 gallons below ground. Additionally, secondary containment measures are often required to prevent the discharge of oil in the event of a container failure. To answer your specific question about the limit of fuel-oil storage inside a building, you will need to consult your local fire code, as this can significantly vary by jurisdiction. However, a commonly referenced standard is a maximum of 60 gallons of Class IIIB liquids (like fuel-oil) in a single fire area unless the storage area is constructed to a higher fire resistance rating.