Sample points are one of the few locations in a chemical plant where workers can have direct contact with product being manufactured, formulated or processed. If the product is hazardous or at a high temperature, controlling exposure is essential to protecting workers from serious injury.
According to the Hierarchy of Controls (see illustration below), the best way to protect workers is to eliminate the hazard or substitute it with a less hazardous process. In a chemical manufacturing environment, that option is impractical and, in most cases, impossible.
Given this reality, Engineering Controls (ECs) are generally accepted to be the most effective method of reducing or eliminating hazardous conditions, particularly in the chemical industry, because ECs remove the hazard at the source.
There are 5 types of ECs that can be integrated with sample system designs to make sampling safer. They include:- Simple Design