Any Chemical Plant requires raw materials in order to produce final products. It also requires various other services called Utilities for smoothly carrying out the processes. Utility is neither a reactant nor a product, But Utilities are required for maintaining adequate conditions of a manufacturing unit. Utility area is an important area of a Chemical Plant. This may house various Boilers, Large Compressors, Refrigeration systems, Air Conditioning systems, Water Treatment Plants, Cooling Towers etc. Utilities are situated outside plant limits should not give any wrong impression that utilities are any less important than the main process, because it is the Efficient Management of Utilities that generate Profits. The utilities help to maintain proper process conditions like pressure, temperature etc., without which it will be impossible to carry out the process. For example, if Steam at higher temperature than desired enters Heat Exchangers, the Exchangers may get damaged. Air, water, steam, refrigeration, fuel, furnace, insulation etc., are the the common utilities used in Chemical Plants.