What cleaning process is primarily conducted for preparing a tank entry?

The primary cleaning process used for preparing a tank entry is hot water cleaning. This method involves the use of heated water to effectively dissolve and remove residue, contaminants, and hydrocarbons from tank surfaces. The high temperature of the water helps to break down substances that may be clinging to the walls of the tank, particularly those stubborn residues often found in tanks that have held liquid fuels or chemicals.

Hot water cleaning is particularly beneficial because it can achieve a level of cleanliness that may not be possible through other methods alone. For instance, it allows for the removal of both water-soluble and some oil-based residues, preparing the tank for safe entry by personnel. Additionally, this method is efficient and can be combined with detergents or other cleaning agents to enhance its effectiveness.

This process is crucial for ensuring the safety of workers entering the tank, as it minimizes the presence of harmful residues that could pose health risks. It also supports compliance with safety regulations concerning confined space entry and permits required to conduct such operations.