Post on 09-Apr-2017
FALL ARREST SYSTEMS
ISOLUX INGENERIA S.A. TOWER ERECTION TRAINING
Full Body HarnessPresented By: Victor Momanyi
Designation: QHSE AssistantDate: _ _ / _ _ / 2016
Contents; Definition
Attachment Location Body Harness Vertical lifeline/Lanyard Webbing Anchorages Horizontal lifelines Connectors & Using fall arrest system safely
What is a ‘Personal fall Arrest system?’A personal fall arrest
system is one option of protection that OSHA requires for workers on construction sites who are exposed to vertical drops of 6 feet or more.
Personal Fall arrest system cont’d Its made up of the following parts;
Attachment Location Body Harness Vertical lifeline/Lanyard Webbing Anchorages Horizontal lifelines Connectors & Using fall arrest system safely
Attachment Location
The attachment of the body harness must be located in the center of the wearer's back, near the shoulder level, or above the head.
Body Harness Body harnesses are designed to minimize stress forces on an
employee's body in the event of a fall, while providing sufficient freedom of movement to allow work to be performed.
Do not use body harnesses to hoist materials. As of January 1, 1998, body belts are not acceptable as part of a
personal fall arrest system, because they impose a danger of internal injuries when stopping a fall.
Vertical Lifelines/lanyardVertical lifelines or lanyards must
have a minimum breaking strength of 5,000 pounds, and be protected against being cut or abraded.
Webbing
Webbing are the ropes and straps used in lifelines, lanyards, and strength components of body harnesses. The webbing must be made from synthetic fibers.
Anchorages Anchorages used for attachment of
personal fall arrest equipment capable of supporting at least 5,000 pounds per employee attached.
It must be independent of any anchorage being used to support or suspend platforms, and/or must be designed and used as follows: As part of a complete personal fall arrest
system which maintains a safety factor for at least 2
Under the supervision of a qualified person
Horizontal lifeline On suspended scaffolds or similar
working platforms with horizontal lifelines that may become vertical lifelines, the devices used to connect to a horizontal lifeline must be capable of locking in both directions on the lifeline.
Connectors;
D-Rings: D-Rings must have a minimum tensile strength of
5,000 pounds, and be proof-tested to a minimum tensile load of 3,600 pounds without cracking, breaking, or becoming permanently deformed.
Connectors Cont’dSnap-hooks: They must also be locking-type, double-
locking, designed and used to prevent the disengagement of the snap-hook by the contact of the snap-hook keeper with the connected member.
Should have minimum tensile strength of 5,000 pounds, and be proof-tested to a minimum tensile load of 3,600 pounds
Using Fall Arrest System Safely Ensure that personal fall arrest systems will, when
stopping a fall: Limit maximum arresting force to 1,800 pounds. Be rigged such that an employee can neither free fall
more than 6 feet nor contact any lower level. Bring an employee to a complete stop and limit
maximum deceleration distance to 3½ feet. Have sufficient strength to withstand twice the potential
impact energy of a worker free falling a distance of 6 feet, or the free fall distance permitted by the system, whichever is less
Using Fall Arrest System Safely Cont’d Remove systems and components from
service immediately if they have been subjected to fall impact, until inspected by a competent person and deemed undamaged and suitable for use
Promptly rescue employees in the event of a fall, or assure that they are able to rescue themselves
Thank You
No Safety Know Pain Know Safety No Pain