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Merchant Marine Training Centreวิ�ชาการเป็นเลิ�ศ เช�ดช�คุ�ณธรรม ผู้��น�า
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 bottomsfuel tanksballast tanksPump-roomssewage tanks
Merchant Marine Training Centre
Merchant Marine Training Centreวิ�ชาการเป็นเลิ�ศ เช�ดช�คุ�ณธรรม ผู้��น�า
Where are the enclosed
spaces?•Fore Peak Tank•Container Hold•Steering Gear Room•Engine Room•Side Ballast Tank
Merchant Marine Training Centreวิ�ชาการเป็นเลิ�ศ เช�ดช�คุ�ณธรรม ผู้��น�า
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 oxygenPoisonous gases (hydrocarbons)People unaware of persons working in an
enclosed spaceNo radio communication Faulty equipment
Equipment
BA System (Breathing apparatus)
ELSA (Emergency Life Saving Appliance)
ELSA Pressure Indicator
Harness
• Risk assessment made to identify hazards.
• A list of work to be done should be made �• Opening and securing entry and exit�• Fire hazards identified�• The confined space is ventilated before entering.�• The space is checked to see how much oxygen there is ( 20% by �volume)
• There is enough lighting �• A permit to work document is filled out and signed by the master�• Signs to tell people not to start equipment or machinery in that area�• One person to communicate with the person inside the space.� � �
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