29/12/2023
HOW HAMMAR LIFERAFT HRU OPERATES
Hammar Hydrostatic Release Units (HRUs) are mechanisms designed to automatically deploy life rafts in the event of a vessel sinking. Here's how a Hammar Liferaft HRU typically operates:
Hydrostatic Pressure Activation:
The Hammar HRU is activated by hydrostatic pressure, which means it responds to the increasing water pressure at a certain depth. This is a critical safety feature as it ensures that the life raft is only deployed when submerged in water, not when the vessel is on the surface.
Water Depth and Pressure Sensor:
The HRU contains a water depth and pressure sensor. As the vessel sinks and the HRU reaches a specific depth underwater, the sensor triggers the release mechanism.
Release Pin Mechanism:
The release mechanism involves a pin that holds the HRU in place. When the water pressure increases due to submersion, the pin is released, activating the HRU.
Severing the Painter Line:
Once the release mechanism is activated, the HRU severs the painter line that holds the life raft to the vessel. The painter line is a line that connects the life raft to the ship or structure, keeping it close in case of an emergency.
Life Raft Inflation:
After the HRU severs the painter line, it allows the life raft to inflate. Inflatable life rafts typically have a gas canister that releases pressurized gas, filling the raft's buoyancy chambers and causing it to rapidly inflate.
Floating to the Surface:
Once inflated, the life raft rises to the surface of the water, providing a floating and accessible platform for the occupants to board and await rescue.
It's crucial to note that HRUs are a vital component of marine safety equipment, ensuring that life rafts are deployed automatically and swiftly in emergency situations. Regular inspection, maintenance, and adherence to manufacturer guidelines are essential to guarantee the proper functioning of Hammar Liferaft HRUs and the overall safety of marine operations.
Hammar Hydrostatic Release Units (HRUs) are mechanisms designed to automatically deploy life rafts in the event of a vessel sinking. Here's how a Hammar Life...