The following words and phrases when used in this act shall have the meanings given to them in this section unless the context clearly indicates otherwise:
"Board." The Industrial Board of the Commonwealth.
"Combustible liquid." A liquid having a closed cup flash point at or above 100 degrees F (37.8 degrees C).
"Department." The Department of Labor and Industry of the Commonwealth.
"Flammable liquid." A liquid having a closed cup flash point below 100 degrees F (37.8 degrees C) and having a vapor pressure not exceeding 40 pounds per square inch, absolute (2068 millimeters hg) at 100 degrees F (37.8 degrees C).
"Person." Any individual, corporation or partnership.
"Retail service station." A place of business engaging in the sale at retail in this Commonwealth of gasoline, diesel fuel or kerosene.
"Storage tank." A vessel which:
35 P.S. § 1242