Vapor degreasers filled with Vertrel^® solvents are very safe cleaning systems. However, during maintenance technicians may be exposed to unusually high concentrations of vapors. Similarly, in the event of a spill, workers may be exposed to prolonged inhalation of high vapor concentrations. These situations require slightly different procedures than merely working near a well-tuned cleaning machine.

First and foremost, if there is any concern that a very high concentration of vapors may exist (such as during a spill) supervisors should follow the safety regulations specified by O.S.H.A. for safe tank entry procedures. These documents specify state-of-the-art procedures, and will provide the best information so the clean-up may proceed safely. Contact your company's Health and Safety manager or O.S.H.A. for details on these specifications.

Users should be aware that the highest concentration of Vertrel^® vapors will be near the ground because the vapors are four to eight times heavier than air. These heavy vapors will displace the air in a confined space. Inhalation may cause suffocation and death due to oxygen deprivation. In the event of a spill, and before attempting any remediation or control measures, evacuate the area and thoroughly ventilate the work spaces. Companies may chose to monitor the individual exposure levels during the clean-up to enhance worker safety.

Prior to entering a confined space, open all hatches or vents on the equipment and ventilate the area. To ventilate, use fans to force air down to the lowest point in the area. Monitor the composition of the atmosphere in the area. Before it will be safe to enter the area safely without an independent air supply, the oxygen content should be at least 19.5% and the concentration of solvent vapors should be below the AEL for the solvent in use.

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