Safety Lanyard Report - Flipbook - Page 2
FCDD-SCP-PET
SUBJECT: Evaluation of Safety Lanyard
c.
d.
e.
f.
tension/compression machine after lanyards were environmentally conditioned. Each
system’s Prusik knot was adjusted halfway between min and max range and affixed to
machine; platform connection to top fixture clevis pin, belt connection to bottom fixture
clevis pin (See figure 1: Tensile Test Setup). The lanyard was pre-tensioned to 150lbs
then marked to check for slipping before loading the system at ten inches per minute (10
in/min) to proof load of 3000lbs and held 30 seconds. No adjustment of the Prusik knot
was observed ≤ 500 lbs. Upon completion of proof load, the load was removed, and
systems inspected for damage to hardware, broken stitches or yarns. Damage is
acceptable with no rope rupture or separation of devices or connections.
i. Environmental Conditioning: Lanyards were weathered in accordance with
AATCC 169 opt.4 for 12 hours.
ii. Conditioned: Safety Lanyards were conditioned to ASTM D 1776 standard
practice for Conditioning and Testing Textiles.
Failure Load Test: Upon meeting 3,000lbs and hold for 30 seconds proof load, five
systems continued static load to failure.
Functionally operate lanyard platform connection to confirm operation with one hand
without visual aid.
Inspect lanyard metal components to determine all are solid or forged, the joints are
not visible, and are of smooth finish and free of manufacturing defect, burrs or
uneven surface which may damage lanyard webbing or rope materials.
Marking: Safety lanyards shall be clearly and indelibly marked or permanently
labeled by any suitable method not having a harmful effect with the following
information:
i. Name of the manufacturer or trademark
ii. Year of manufacture
iii. Lot / Batch number
Figure2. Instron Tensile Test Setup
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