How can employers protect workers from fire and explosion risks in sewers?

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Employers must carry out risk assessments and controls to protect workers from fire and explosion risks in sewers
Employers can protect workers from fire and explosion risks in sewer work by conducting comprehensive risk assessments and putting in place appropriate controls, since underground sewer infrastructure can produce flammable gases. Workers also need clear briefing on hazards and safe-work procedures, along with adequate supervision during manhole-cover related tasks.
Employers must assess hazards from flammable gases in underground infrastructure
MOM highlighted that underground infrastructure such as sewerage and waste pipes can produce flammable gases. Because of that, employers are expected to identify fire and explosion hazards as part of a comprehensive risk assessment before similar works start.
Companies must implement appropriate controls to prevent fire and explosions
After a flash fire incident at a sewer manhole in Tuas on July 10, MOM ordered a contractor to suspend manhole-cover replacement works until investigations determine the cause and safety measures are strengthened. MOM also stated that employers must implement appropriate controls to protect workers from fire and explosion hazards in such environments.
Workers must be briefed on hazards and safe-work procedures
MOM said workers should be properly briefed on the hazards and the safe-work procedures relevant to the task. This briefing is tied directly to the risk of flammable gases in sewer systems, which can lead to sudden fire events.
Adequate supervision is required during the work
MOM also specified that workers should be supervised adequately while carrying out the work. In the July 10 incident, two employees were injured with burn injuries after a sudden fire erupted from within a sewer manhole, underscoring the need for oversight during hazardous activities.

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How can employers protect workers from fire and explosion risks in sewers?

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