All factories and general machinery must be registered with DOSH before they can be installed and operated in Malaysia. Some operation, installation, maintenance and dismantling of equipment and process need competent persons. Thus, during the installation of machinery and equipment such as cranes, lifts and local exhaust ventilation systems, competent persons are compulsory to ensure safe erection, whilst a boilerman and a steam engineer are required to operate high risk equipment such as boilers.