Rigging Presentation

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Rigging Presentation
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Wire Rope
Nomenclature
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A wire rope is a Machine with many moving parts
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The Core
IWRC
Strand
Fiber
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How to describe any wire rope
A typical wire rope may be designated 6X25 FW
PRF RLL XIP IWRC. This translates to A 6 strand
(6X25) of filler wire construction (FW). The
grade of wire used is Extra Improved Plow Steel
(XIP). The strands are preformed (PRF) in
helical pattern before being laid Right lang
(RLL) around an Independent Wire Rope Core (IWRC).
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6X19 IWRC (Internal Wirerope Core)
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Paint To Paint 1 Lay
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How a Wire Rope Machine Works
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Equalizes Unequal Forces on The Rope as it Goes
Over the Sheaves
Right Lay Regular Lay
Left Lay Regular Lay
Right Lay Lang Lay
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LUBRICATION Ropes and chains shall be regularly
lubricated
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BLOCK TACKLE
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Slings
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Slings
Choker Basket Straight Bridle
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Straight Sling
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Choker Sling
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Basket Sling
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Bridle Sling
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Two legged Bridle Sling
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Four legged Bridle Sling
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Four legged Bridle Sling
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Bridle
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SPLICES
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Mechanical Splice
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Hand Tucked Eye Splice
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Hand Tucked Eye Splice
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Mechanical Splice
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Wire Rope
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ROPE INSPECTIONS
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Always measure the diameter of any rope at its
widest point - by turning the caliper on the rope
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Whats wrong with this?
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Broken Wires
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How many broken wires?
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Crushed
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Close-up view
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Kinking
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Bird Caging
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Rigging Standard
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Slings and Attachments
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OSHA STANDARDS 29 CFR 1926 CONSTRUCTION
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1926.251(a)Rigging equipment for material
handling

• (a) General. (1) Inspection of rigging equipment
• (2) Rigging equipment shall not be loaded in
  excess of its recommended safe working load
• (3) Rigging equipment, when not in use, shall be
  removed
• (4) Marking of special custom design grabs,
  hooks, clamps, or other lifting accessories, for
  such units as modular panels, prefabricated
  structures and similar materials, shall be marked
  to indicate the safe working loads and shall be
  proof-tested prior to use to 125 percent of their
  rated load.

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1926.251(a)Rigging equipment for material
handling

• (5) "Scope."
• Applies to slings used in conjunction with other
  material handling equipment for the movement of
  material by hoisting, in employment's covered by
  this part.
• Types of slings covered are those made from alloy
  steel chain, wire rope, metal mesh, natural or
  synthetic fiber rope (conventional three strand
  construction), and synthetic web (nylon,
  polyester, and polypropylene).
• (6) "Inspections."
• Each day before being used,
• Additional inspections where service conditions
  warrant.
• Damaged or defective slings shall be immediately
  removed from service.

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1926.251(b) Alloy steel chains. (1) Welded alloy
steel chain slings shall have permanently affixed
durable identification stating size, grade, rated
capacity, and sling manufacturer.
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1926.251(b) Alloy steel chains. (2) Hooks,
rings, oblong links, pear-shaped links, welded or
mechanical coupling links, or other attachments,
when used with alloy steel chains, shall have a
rated capacity at least equal to that of the
chain.
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• 1926.251(b) Alloy steel chains.
• (b)(3) Job or shop hooks and links, or makeshift
  fasteners, formed from bolts, rods, etc., or
  other such attachments, shall not be used.

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Alloy Steel Chain
(b)(4) Rated capacity (working load limit) for
alloy steel chain slings shall conform to the
values shown in Table H-1.
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Cracked,Pitted Non-alloy Repair Link
(b)(5) Whenever wear at any point of any chain
link exceeds that shown in Table H-2, the
assembly shall be removed from service.
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Legal Repair Link
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Illegal Repair Link
Doesnt have design load Strength - Malleability
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Sling shackle
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1926.251(b)Rigging equipment for material
handling

• (b)(6) "Inspections."
• (i) In addition to the inspection required by
  other paragraphs of this section, a thorough
  periodic inspection of alloy steel chain slings
  in use shall be made on a regular basis, to be
  determined on the basis of
• (A) frequency of sling use
• (B) severity of service conditions
• (C) nature of lifts being made and
• (D) experience gained on the service life of
  slings used in similar circumstances. Such
  inspections shall in no event be at intervals
  greater than once every 12 months.
• (b)(6)(ii) The employer shall make and maintain a
  record of the most recent month in which each
  alloy steel chain sling was thoroughly inspected,
  and shall make such record available for
  examination.

Rope Inspections
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1926.251(c)Rigging equipment for material
handling

• (c) Wire rope.
• Use tables H-3 - H-4 Rated Capacities For Single
  Leg Slings - to determine the safe working loads
  of various sizes and classifications of improved
  plow steel wire rope and wire rope slings with
  various types of terminals.

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1926.251(c)Rigging equipment for material
handling

• (c)(2) Protruding ends of strands in splices on
  slings and bridles shall be covered or blunted.
• (c)(3) Wire rope shall not be secured by knots,
  except on haul back lines on scrapers.

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1926.251(c)Rigging equipment for material
handling

• (c)(4) The following limitations shall apply to
  the use of wire rope
• (i) Eye splice
• (ii)Eye splices in the ends of wires and for
  endless rope slings continuous piece without knot
  or splice.
• (iii) Eyes in wire rope slings
• (iv) When wire rope shows signs of excessive
  wear, corrosion, or defect.
• (5) When U-bolt wire rope clips are used to form
  eyes,
• (i) When used for eye splices, the U-bolt shall
  be applied so that the "U" section is in contact
  with the dead end of the rope.
• (c)(6) Slings shall not be shortened with knots
  or bolts or other makeshift devices.

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Internal Color Code String To ID. MFG.
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Wire Rope Clips
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Sand cast clip
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Fist Grip
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Double Saddle Wire Rope Clip
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1926.251(e)Rigging equipment for material
handling

• (e) Synthetic webbing (nylon, polyester, and
  polypropylene).
• (1) The employer shall have each synthetic web
  sling marked or coded to show
• (i) Name or trademark of manufacturer.
• (ii) Rated capacities for the type of hitch.
• (iii) Type of material.

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1926.251(e)Rigging equipment for material
handling

• (2) Rated capacity shall not be exceeded.
• (3) "Webbing." Synthetic webbing shall be of
  uniform thickness and width and selvage edges
  shall not be split from the webbing's width.
• (4) "Fittings." Fittings shall be
• (i) Of a minimum breaking strength equal to that
  of the sling and
• (ii) Free of all sharp edges that could in any
  way damage the webbing.

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1926.251(e)Rigging equipment for material
handling

• (5) "Attachment of end fittings to webbing and
  formation of eyes. Stitching shall be the only
  method used to attach end fittings to webbing and
  to form eyes. The thread shall be in an even
  pattern and contain a sufficient number of
  stitches to develop the full breaking strength of
  the sling.

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1926.251(e)Rigging equipment for material
handling

• (6) "Environmental conditions." When synthetic
  web slings are used, the following precautions
  shall be taken
• (i) Nylon web slings shall not be used where
  fumes, vapors, sprays, mists or liquids of acids
  or phenolics are present.
• (ii) Polyester and polypropylene web slings shall
  not be used where fumes, vapors, sprays, mists or
  liquids of caustics are present.
• (iii) Web slings with aluminum fittings shall not
  be used where fumes, vapors, sprays, mists or
  liquids of caustics are present.

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1926.251(e)Rigging equipment for material
handling

• (7) "Safe operating temperatures." Synthetic web
  slings of polyester and nylon shall not be used
  at temperatures in excess of 180 deg. F (82.2
  deg. C). Polypropylene web slings shall not be
  used at temperatures in excess of 200 deg. F
  (93.33 deg. C).

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1926.251(e)Rigging equipment for material
handling

• (8) "Removal from service." Synthetic web slings
  shall be immediately removed from service if any
  of the following conditions are present
• (i) Acid or caustic burns
• (ii) Melting or charring of any part of the sling
  surface
• (iii) Snags, punctures, tears or cuts
• (iv) Broken or worn stitches or
• (v) Distortion of fittings.

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All rigging equipment must be inspected on a
regular basis
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Check handle of metal mesh sling for rated load
capacity
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Most damage is easy to see
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Heat Damage
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Do Not use for lifting
Doesnt have design load Strength - Malleability
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Melted Link
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Deformed hook
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Positive Latching Hook Per 550 (G)
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Wedge Socket (Terminator)
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Web connector with spool
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