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• OPERATING PROCEDURE NO. HS-523 <br /> OPERATION of STEAM CLEANER and POWER WASHER <br /> 523.1 PURPOSE <br /> This procedure is intended to provide basic guidance for the safe operation of portable <br /> steam cleaners and power washers. <br /> 523.2 APPLICABILITY <br /> This procedure applies to the operation of portable steam cleaners and power washers. <br /> 523.3 HAZARDS <br /> A steam cleaner is capable of generating up to 200psi of internal pressure. This amount of <br /> pressure can can cause weakened components to burst and release high velocity pieces <br /> that are capable of causing puncture injuries. Steam temperatures can exceed 250°F. <br /> Contact with the pressurized steam, heating unit, gas engine, and spray nozzle can cause <br /> third degree burns. A power washer operates at considerably less pressure and much <br /> lower temperatures, but still has the capacity to cause similar injuries of lesser magnitude. <br /> • Consideration should be given to the contaminants in the soil when these units are used <br /> for decontamination because the heat and/or nozzle velocity may create an airborne <br /> inhalation exposure. <br /> 523.4 SAFE PRACTICES <br /> The manufacturer's procedure should be read until it is understood and strictly adhered to <br /> at all times. The manufacturer's operating parameters must never be deviated from during <br /> operation. Thick canvas lined neoprene gloves generally provide adequate protection <br /> from heat and site contaminants. Rubber boots, Tyvek coveralls with a hood, and safety <br /> glasses are also appropriate protection to be worn. A afce shield must also be worn for <br /> close contact work. <br /> • <br /> 1 <br />