Protective apron means an apron made of radiation-attenuating materials used to reduce exposure to radiation.
Protective equipment shall include:
Infiltrative surface means designated interface where effluent moves from distribution media or a distribution product into treatment media or original soil. In standard trench or bed systems this will be the interface of the distribution media or product and in-situ soil. Two separate infiltrative surfaces will exist in a mound system and an unlined sand filter, one at the interface of the distribution media and fill sand, the other at the interface of the fill sand and in-situ soil.
Respiratory protective equipment means an apparatus, such as a respirator, used to reduce an individual's intake of airborne radioactive materials.
Impact surface means an interior or exterior surface that is subject to damage by repeated sudden force such as certain parts of door frames.