Читать книгу Patty's Industrial Hygiene, Hazard Recognition - Группа авторов - Страница 95

Using the hierarchy of controls model, the assessment team and management reviewed possible solutions. Recognizing that higher‐level controls would be more effective and reliable, management stated that higher‐level controls should be strongly considered. It should be noted that this PtD example is a redesign of an existing process, not a new design.

For concern #1, a review of available substitutions for pure SO₂ suggests lower concentrations of SO₂ (aqueous solution) and powdered, granular, and tablet forms of potassium meta‐bisulfite. Costs for existing chemicals and procedures were determined and compared to the proposed solutions and their projected costs. It was determined that the costs of substituting with the less hazardous forms of SO₂ were about the same as the cost of pure SO₂, but other benefits of using the less hazardous products were the elimination of potential releases of highly hazardous chemicals to the surrounding community, improved employee morale and enhanced management goodwill, and reduced compliance costs and efforts. For concern #2, the location of the DMDC metering machine directly placed in the congested bottling area was evaluated.

It became apparent that the machine could be relocated away from the bottling area with piping to the bottling system. Similar benefits such as employee health, improved morale, management goodwill, and increased space were considered.