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A lifeline is a fall protection safety device in the form of an open fence composed of wire and stanchions secured around the perimeter of an area to prevent accidental falls. It is commonly found on sailboats [ 1 ] and construction sites , [ 2 ] as well as other situations where dangerous falls can occur, such as at scenic overlooks and in caves .
The rope can be lifeline rope, which stretches to lengthen the fall distance as it absorbs energy; or static rope, which does not stretch and thus limits the fall distance, but requires the fall energy be absorbed in other devices. It is essential that the PPE be rated for Fall Arrest and PPE used with static line include an energy absorber.
A lifeline harness is a rope connecting the diver to an attendant, usually at the surface. A professional diver would use a safety harness to keep close to something they are working on underwater, without the harness they could be pulled away from their work by a current.
Each arm must be rotated out manually; uses manila rope falls. Goose-neck shape to the arm that is swung out. [6] Mechanical (obsolete) – This type is like the radial davit, but both arms are moved out at the same time using a screw system; uses manila rope falls. An example is the Welin Quadrant davit type used on RMS Titanic. [6]
Lifeline (safety), a fall protection safety device in the form of an open wire rope fence Life Line Screening , a health screening company in the United States Lifeline utility , in New Zealand, an essential service during major emergencies
For example, rope used in caving is generally exposed to increased abrasion, so the mantle is woven more tightly than rope used in climbing or rappelling. However, the resulting rope is cumbersome and difficult to tie knots in. Kernmantle construction may be used for both static and dynamic ropes. Static ropes are designed to allow relatively ...