The success in cleaning any vessel or pipeline circuit in place depends on five considerations; time , temperature, pressure, concentration and hydraulics. increasing temperature may decrease the time required to CIP but the excessive temperature cause expansion which can eventually cause crack in the welds and seams of such a vessels.
you are doing with simple hot water. how much its effective, the microbial result will show. to make sure the best result will come after post rinsing .
A good CIP system includes Pre and post rinse cycles. the type of product used for CIP depends on the soils being cleaned. in the case of heavy soils fatty nature that are burned on or caramelized , a caustic product is indicated. where the soils lighter , and can be removed with a pre-rinse , a milder alkaline product is adequate. when proteins are involved , chlorine must be incorporated in the wash cycle to peptize these proteins.
In every case, the alkaline wash cycle should be followed with an acid post rinse. The post rinse solution should be at a pH level so that the residual left on the surface of the vessel or in the pipeline is approximately 4.5 to 5. the acid solution should remain in the pipeline until preparing for production.