SEAM 4 FINALS :p Flashcards
a space that is not used for day to day activity
Enclosed Space
the presence of these characteristics (or at least one) can make space an enclosed space
○ Limited opening for entry and exit
○ Inadequate ventilation
○ Is not designed for continuous worker occupancy
should be available to identify all enclosed spaces on board and should be displayed in public spaces
Ship-Specific List
the most common confined spaces onboard ships:
● cargo holds
● chain lockers
● cofferdams
● water tanks
● void spaces
● duct keels
● fuel tanks
● engine crankcases
● exhaust
● scavenge receivers
7 Dangers and Hazards associated with Enclosed Spaces
- Lack of Oxygen
- Hazardous Vapours
- Leakage of hazardous materials from adjacent spaces.
- Insufficient/No Ventilation
- Restricted Space
- Inadequate Lighting
- Personal Injury
7 Dangers and Hazards associated with Enclosed Spaces
_________ due to slips, trips, and fall
Personal Injury
7 Dangers and Hazards associated with Enclosed Spaces
________ or limited space in any compartment can make rescue attempts from such chambers difficult and challenging.
○ Personnel should understand the layout of an enclosed space before attempting entry.
Restricted Space
7 Dangers and Hazards associated with Enclosed Spaces
There could be high chances of the presence of toxic gases or absence of oxygen, both cases being lethal for man entry.
Insufficient/No Ventilation
7 Dangers and Hazards associated with Enclosed Spaces
- The presence of TOXIC VAPOURS can make space deadly even if there is no lack of oxygen or the compartment is oxygen-enriched.
○ A person may suffer from eye irritation, headache or even become unconscious if he/she inhales toxic gases. A higher concentration of toxic gases can also cause death.
Hazardous Vapours
7 Dangers and Hazards associated with Enclosed Spaces
○ The acceptable range of oxygen in an enclosed space is between 19.5% to 23.55
(20% acceptable). Oxygen in any compartment can reduce due to many factors-rusting of steel parts is the most common one.
○ We all know that rusting is nothing but the process of oxidation-thus oxygen is consumed. Oxygen can also be consumed by activities like hot work, welding or the occurrence of fire.
Lack of Oxygen
Procedure for Entering an Enclosed Space:
- List of work
- Potential hazards
- Opening and securing
- All fire hazard possibilities
- The confined space has to be well ventilated before entering
- Space has to be checked for oxygen content and other gas content
- The oxygen content should read 20% by volume
- Enough lighting and illumination
- A proper permit to work
- Permit to work
- Permit to work
- Proper signs and Men at work
Procedure for Entering an Enclosed Space _________ to be done should be made for the ease of assessment for e.g. if welding to be carried out or some pipe replacement etc. This helps in carrying out the work quickly and easily.
List of work
Procedure for Entering an Enclosed Space
___________ are to be identified such as the presence of toxic gases.
Potential hazards
Procedure for Entering an Enclosed Space ___________ has to be done and precaution should be taken to check if the opening of enclosed space is pressurized or not.
Opening and securing
Procedure for Entering an Enclosed Space __________ should be minimized if hot work is to be carried out.
○ This can be done by emptying the fuel tank or chemical tank near the hot workplace.
All fire hazard possibilities
Procedure for Entering an Enclosed Space
The confined space has to be ___________ before entering. Enough time should be allowed to establish a ventilation system to ensure that air containing enough oxygen to sustain life is introduced.
○ Ventilation can either be natural or mechanical using blowers.
well ventilated
Procedure for Entering an Enclosed Space
____________ with the help of an oxygen analyzer and gas detector.
○ Atmosphere testing instruments should be able to measure the presence of carbon monoxide and hydrogen sulphide.
Space has to be checked for oxygen content and other gas content
Procedure for Entering an Enclosed Space
The oxygen content should read _____ by volume. A percentage less than that is not acceptable and more time for ventilation entering should be given in such circumstances.
20%
Procedure for Entering an Enclosed Space
______ should be present in the enclosed space before entering
Enough lighting and illumination
Procedure for Entering an Enclosed Space
A _______ has to be filled out and a checklist to be checked so as to prevent any accident which can endanger life. A confined space should only be entered with an authorised and issued permit and by a trained and competent person.
proper permit to work
Procedure for Entering an Enclosed Space
_______ is to be valid only for a certain time period. If the time period expires then again new permit is to be issued and the checklist is to be filled out.
Permit to work
Procedure for Entering an Enclosed Space
_______ has to be checked and permitted by the Master of the ship in order to work in a confined space
Permit to work
Procedure for Entering an Enclosed Space
____________ signboards should be provided at required places so that person should not start any equipment, machinery or any operation in the confined space endangering the life of the people working
Proper signs and Men at work
The golden rule of confined space rescue:
“Never enter a confined space to rescue someone”
● Attempts to rescue a person from a confined space should only be made from _______ the confined area
outside