Divers Down/Man Below system

Question 1

Divers down means?

Answer 1

Divers who are working on the ship underwater

Question 2

Health & safety considerations during divers down

Answer 2

• Shaft brake is on
• No discharge overboard
• All sonar turned off
• Cathodic protection off
• CPP is locked off

Question 3

Describe Man below system

Answer 3

A board in the SCC where an ET places their man below tally, which indicates the compartment they are working in.
* STP
* Gas turbine room
* Funnel
* MGR ( Contaminated oil tanks)

Question 4

Man below procedure

Answer 4

1. Check hazard log sheet
2. Get ppe
3. Get permission
4. Inform S/R
5. Place man below tally on board

Question 5

Define confined spaces

Answer 5

A confined space is a compartment which has remained unventilated for more than 24hrs
eg: Fuel,water,ballast tanks and STP’s

Question 6

Hazards & precautions of confined spaces

Answer 6

Hazards include- Gas,vapour or fumes from contents
Precautions-
* Use a Leader gas monitor placed at head height (Tests for methane,oxygen and hydrogen sulphide) visual & audio alarm
* Space is cool
* Space is force ventilated for 24hrs min
* Test atmosphere after 24hr
* If still unsafe ventilate for a further 12hrs
* Gas free certificate is obtained
* PPE is worn
* Sentry with a BA posted outside
* Comms with sentry
* Lifeline worn
* No smoking