Lung cancer is the most common cause of clubbing. Clubbing often occurs in heart and lung diseases that reduce the amount of oxygen in the blood. These may include: 1  Heart defects that are present at birth (congenital).
What is a safety management system (SMS)? A safety management system is a systematic approach to managing safety, including organisational structures, accountabilities, policies and procedures.
A safety vacuum release system usually is simple to install and test, as long as a few basic rules are followed. A safety vacuum release system (SVRS) is a system or a device that disables a pool pumpâs suction ability so that a body or object trapped against the suction outlet is freed. It does this by inducting air to the pump and/or powering down the pump motor when it senses a sudden vacuum increase.