What level of benzene content in the medium is required to conduct a gas-tightness test?
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Benzene is a carcinogen and is classified as a medium-hazard substance, but its containment systems should be designed as if it were a high-hazard substance. Now the question is: at what level of benzene content in the medium should the container be subjected to a gas-tightness test?
In my opinion, it is still best to conduct leakage tests, as the ‘Regulations on Solid and Liquid Materials’ do not specify limits on the amount of hazardous substances. During the operation of equipment, such substances can accumulate, so it is prudent to take a more cautious approach... For your reference!