Merchant Marine Training Centre วิชาการเป็นเลิศ เชิดชู คุณธรรม ผู้นำ Entering an Enclosed Space

What is an enclosed space? Enclosed Space is a space that has:  Few entries and exits.  Very little or no natural ventilation.  Was not designed for people to work in. Enclosed spaces include: cargo tanks  double bottoms  fuel tanks  ballast tanks  Pump-rooms  sewage tanks Merchant Marine Training Centre

วิชาการเป็นเลิศ เชิดชู คุณธรรม ผู้นำ Where are the enclosed spaces ? • Fore Peak Tank • Container Hold • Steering Gear Room • Engine Room • Side Ballast Tank

Merchant Marine Training Centre วิชาการเป็นเลิศ เชิดชู คุณธรรม ผู้นำ Man Hole Hatchway

Three crew members died after entering this chain locker. The rusting of the chain reduced the oxygen levels to less than 10% This hole was cut in the forecastle to drain water. It created an oxygen deficient atmosphere that entered the store and killed two people This Halogen lamp was put in a chemical cargo hold after it had been cleaned. When the door was opened for inspection it exploded killing two people Examples of Accidents

Dangers !  Not enough oxygen  Poisonous gases (hydrocarbons)  People unaware of persons working in an enclosed space  No radio communication  Faulty equipment

Equipment BA System (Breathing apparatus) ELSA (Emergency Life Saving Appliance) ELSA Pressure Indicator Harness

• Risk assessment made to identify hazards. • Ÿ A list of work to be done should be made • Ÿ Opening and securing entry and exit • Ÿ Fire hazards identified • Ÿ The confined space is ventilated before entering. • Ÿ The space is checked to see how much oxygen there is ( 20% by volume) • Ÿ There is enough lighting • Ÿ A permit to work document is filled out and signed by the master • Ÿ Signs to tell people not to start equipment or machinery in that area • Ÿ One person to communicate with the person inside the space. Ÿ Ÿ Checks to be made

Equipment to be used Tripod Blower Gas Indicator

Can you name these items?

Questions 1. What are the dangers of entering an enclosed space? 2. What equipment is used when entering an enclosed space? 3. What checks should be made before entering an enclosed space?

The End Merchant Marine Training Centre