The Kai Hung property management team found that their flushing water system did not workproperly. They believed that it was caused by the uncertain pipe work defect inside the flush watertank. Kai Hung property management agreed to employ a term contract for fixing all the defectivework and performing cleaning job for their flushing water system including all electrical andmechanical work. Tai Wah Company was finally awarded this contract. During a site inspection,they saw that the size of the tank was almost 5-metre tall, and 5-metre in diameter. It was full ofwater inside the tank. The only entrance was a 0.5-metre diametrical opening on the top of thetank. After removal of the cover, they saw rusted metal pipe with crack inside the tank.Tai Wah Company is planning to use a motor to pump water out of the tank. The motor willbe installed outside the flush water tank with clearance enough to ensure the exhausted gas willnot affect the whole project. Then, the workers will use the manual electric arc welding equipmentto fix the cracked pipe. The cleaners will next go inside the tank and clean the whole tank by catladder.You are one of the colleagues and your responsibility is to write a Risk Assessment Report before thestart of the project in order to minimize the risk of workers and provide a suitable procedure for theworkers to follow.