What conditions are required and what procedures must be followed to carry out maintenance work inside equipment (towers, tanks, etc.)?
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What conditions are required and what procedures must be followed to carry out maintenance work inside equipment (towers, tanks, etc.)?
Substitution analysis passed; maintenance work permit, confined space work permit
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The very first step is to obtain a permit for working in confined spaces; if electricity is to be used, an electrical work permit is required. For towers and tanks that have been steamed, blind flanges must be installed at the entrances and exits, and manholes must be opened to allow natural ventilation, among other things.
Obtain a permit for working in confined spaces, conduct tests for toxic and harmful gases inside, and ensure good ventilation.
The inlet and outlet blind flanges of the tank should be sealed tightly; ventilation and gas displacement should be carried out, along with sampling for analysis. It is advisable to take samples from the bottom, middle, and top of the tank. Once the samples meet the required standards, it is necessary to ensure that the power supply connected to the tank is disconnected.
The very first step is to obtain a permit for working in confined spaces; if electricity is to be used, an electrical work permit is required. For towers and tanks that have been steamed, blind flanges must be installed at the entrances and exits, and manholes must be opened to allow natural ventilation, among other things.