Safety,type of working casulities failling or mechanical impacts sharp tools or electrical schacks or buring Describe first Aids

When the metal goes into equipments,
When the Equipments overload, when the workers overload
When the Electricity Current overload,
When the solvent extraction workshop has solvent leaks out

Do serious fireproof work when operation the solvent extraction, no light,/spark?
Solvent extraction has to be build in the separate yard, Restrictions on access to;
Well do the daily preventation working,
Strictly following the operation introductions and regulations