Online Training & Certification Course 29 CFR 1910.123-126
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This course presents an overview of dipping, coating, and cleaning operations, including the sources of exposure, modes of exposure, legislation regarding exposure, and ways to prevent exposure to the risks and hazards associated with these processes.
What are the governing regulations? OSHA regulates the use of dip tanks when the dip tank contains a liquid other than water. Standard 29 1910.123 outlines the regulations where tanks are used to change an object through various means:
Altering the surface
Changing the character
OSHA 29 CFR 1910.124 addresses the construction of a dip tank. A dip tank must be strong enough to withstand any expected load and have proper ventilation.
OSHA 29 CFR 1910.125 addresses the construction of a dip tank and the necessary safety controls that must be in a workplace where dip tanks are used.
OSHA 29 CFR 1910.126 addresses the additional requirements that apply to tempering tanks, as well as coating and cleaning processes.
Who must take this training? Many industries use dip tanks. The chemicals used in dip tanks can be hazardous to handle. It is important to understand the risks that can arise from using dipping, coating, and cleaning processes, as well as how to properly handle the chemicals used in their operation. Being familiar with the U.S. Occupational Safety and Health Administration (OSHA) standards for these processes will help minimize the associated risks.
Case Study: A large explosion and fire occurred at the Barton Solvents facility in Des Moines, Iowa, on October 29, 2007. The company packages, stores, and delivers solvents and other chemical products, many of which are widely used in the paint and coatings industry. An unidentified source ignited the ethyl acetate solvent being loaded into a 330-gallon square tank, called a tote. The operator who was filling the tote turned away momentarily when he heard what was described as a popping sound, which witnesses believe was a pressure relief device. A fireball then erupted from the tote. Pressure from the eruption knocked the filling nozzle out of the tank, spraying ethyl acetate into the room and onto the operator. His clothing ignited, but he quickly removed the ignited clothing and escaped serious injury. Another operator tried to use a hand-held extinguisher to battle the blaze, but it emptied before the fire could be extinguished. The second operator then shut off all power to the area and the plant was successfully evacuated. The flames spread quickly and eventually consumed and destroyed a large portion of the facility. Investigators believe that static electricity may have been the ignition source.
Key Takeaway: To reduce the risks associated with managing chemicals for industrial coating, it is important to ensure that any portable container used to add liquid to a tank is electrically bonded to the dip tank and positively grounded to prevent static electrical sparks or arcs.
According to OSHA when the employer has reason to believe that any affected employee who has already been trained does not have the understanding and skill required. Circumstances where retraining is required include, but are not limited to, situations where:
(1) Changes in the workplace render previous training obsolete; or (2) Changes in the types of PPE to be used render previous training obsolete; or (3) Inadequacies in an affected employee's knowledge or use of assigned PPE indicate that the employee has not retained the requisite understanding or skill.