In general, potential hazards in the chemical industry which can cause death include (1) fire, (2) explosion, (3) falling from a height, (4) working in confined spaces. Other problems related to working in confined spaces which often cause work incidents or accidents include not following limited work procedures, not identifying hazards, not assessing risks, not controlling risks, not using personal protective equipment, not testing toxic gases, no preparing work supervisors, not having competent workers in the area of limited space. As is known together, confined spaces contain several good sources of danger originating from chemicals that contain poison and are flammable in the form of gases, vapors, fumes, dust and so on. In addition there are other hazards in the form of oxygen deficiency or conversely excessive oxygen levels, extreme temperatures, engulfment, or other physical risks that arise such as noise, wet / slippery surfaces and falling hard objects inside the limited space that can lead to workplace accidents up to the death of the workforce working in it.

Keywords : Cleaning, Storage Tanks, Chemical Industry.