Risk Based Process Safety Management

Introduction The most effective means of consistently ensuring the safety of a drinking-water supply is through the use of a comprehensive risk assessment and risk management approach that encompasses all steps in water supply from catchment to consumer. In these Guidelines, such approaches are called water safety plans (WSPs)”.

Introduction  Working near or in a manhole inherits potential dangers which may result in serious accidents. The common ones include falls/slips, fire or explosion, oxygen depletion, gas poisoning, heat stress, drowning, asphyxiation arising from gas, fume, vapor, and entrapment by free-flowing solid. Amongst these, dangers involving gases are easily overlooked or neglected, leading to serious casualties. This guide aims to remind persons entering or working in a manhole to take appropriate measures, including measures for the prevention of oxygen depletion and gas poisoning. ‘‘Certified workers’’ (Note 1) must be familiar with the ‘Code of Practice – Safety and Health at Work in Confined Spaces, and before entering a manhole, they must take all the necessary safety precautions to ensure safety at work