Implement confined space procedures as defined in Occupational Safety and
Health Administration (OSHA) Standard 29 CFR 1910.146, whenever
someone is inside the tank.
Contact the local safety office and obtain a confined space entry permit
before entering the holding tank.
Operators must wear heavy-duty plastic or rubber aprons, rubber gloves,
safety goggles and/or face shield when cleaning wastewater-contaminated
surfaces. Material may contain bacteria or viruses that present a danger to
life or health.
Clean the interior of the holding tank with a high pressure, multi-hose, detergent type
steam cleaning unit and disinfect before performing any maintenance on the interior
of the holding tank.
8. When the tank is completely empty (figure 2, item 1), rinse and steam clean the interior, the primary
shutoff assembly, manway, as well as intake, drain hoses and oil catch muffler.
Figure 2. Tank Interior