TABLE
14
WHEN
TO
REPLACE
WIRE
ROPE-BASED
ON
NUMBER
OF
BROKEN
WIRES*
Running
Ropes
Standing
Ropes
No. Broken
Wires
No.
Broken
Wires
In
No. Broken
Wires
in
Standard Ropes
Rotation
Resistant
Ropes
In all strands
In
one
In one
At End
Standard Name
in one strand
in
Rope Lay
Connections
Rope Lay one
Rope Lay
ASMEIB30.2
Overhead & 12** 4
--
--
--
Gantry Cranes
ASME/B30A
Portal, Tower
6**
3
4 in all strands in one
--
--
& Pillar Cranes
rope lay or 2
in
one
strand in one rope lay
ASME/B30.5
Crawler,
6**
3
2 in 6 rope diameters or 3
2
Locomotive
4 in
30 rope diameters
& Truck Cranes
ASMEIB30.6
Derricks
6**
3
--
3
2
ASMEIB30.7 Base Mounted
6**
3
--
3
2
Drum Hoists
ASMEIB30.8 Floating Cranes 6** 3
--
3
2
& Derricks
ASMEIB30.16 Overhead Hoists
12**
4 2 in 6 rope diameters or
--
--
4 in 30 rope diameters
ANSI/AlOA
Personnel Hoists
6**
3
--
2**
2
**For rope operating
on
steel sheaves and drums. Contact the sheave, drum, equipment manufacturer or a qualified person for removal criteria for
wire ropes operating on sheaves and drum made
of
material other than steel.
** Also remove for 1 vaney break (at strand-to-strand contact point)
or
one protruding or looped wire broken at
strand-t~-core
contact point.
Wire breaks gener-
ally are seen in two
locations on a rope;
at the crowns
of
outer
strands and in
the valleys between
outer strands.
Crown
Wire
Breaks
Valley Wire Breaks
66 • Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition
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