Industrial Rigging Industry Terminology

Use Grade 100 chain slings for this high-temperature pick.; The chain tag shows a 2-leg, 1/2 in Grade 80 with a 60° angle WLL.; Remove that sling—one link is elongated beyond allowable.

Per ASME B30.9, this roundsling needs an ID tag or it’s out of service.; Reference B30.26 to check the shackle’s side-load limits.; The lifting beam must meet ASME B30.20 and be proof-tested.

If we use a basket hitch at 60°, the leg tension goes up—check the table.; For that smooth cylinder, a basket hitch with anti-slip protection works well.; Don’t basket on a load that could roll; add a cradle or blocking.

The spreader is a BTH device rated for 20 tons at 20 ft spread.; Our coil lifter falls under ASME B30.20 requirements.; Have the magnet BTH inspected before the shift.

Build a 3-2-3 crib before you lift off the skates.; Use hardwood blocking to spread the jack load on the slab.; Never place cribbing on an uneven or soft surface without a mat.

Use a bow shackle at the master link to connect the 3-leg bridle.; No side-loading that bow shackle beyond the manufacturer’s limit.; Verify the shackle’s WLL matches our calculated leg load.

Shift the rear pick point forward—the CG is closer to the motor end.; Mark the estimated CG on the drawing for the pre-lift.; Unequal sling lengths are needed because the CG is off-center.

Hang a 2-ton air chain hoist on the beam trolley.; This hoist is only rated for H3 duty—don’t use it for production cycling.; Inspect the load chain for twist and wear before use.

Use a double-wrap choker to reduce slippage on that pipe.; Apply choker reduction factors from the sling tag.; Avoid choking around sharp edges without padding.

Add corner protectors where the roundsling crosses the beam flange.; That edge radius is too small—use a steel softener under the sling.; Web slings require edge protection on any sharp corner.

At 50 ft radius with main boom only, the chart shows 12,300 lb.; We’re on outriggers—use the ‘outriggers fully extended’ chart.; Account for the rigging and block as deductions per the load chart.

Because it’s a tandem pick, classify it as a critical lift.; This lift exceeds 75% of chart—follow the critical lift checklist.; Engineering review is required per our critical lift policy.

A D/d of 1.5 on that shackle pin will derate the wire rope sling.; Choose a larger sheave to improve the D/d for the fiber rope.; Use softeners to increase effective D at the beam edge.

Chain slings typically have a lower design factor than web slings.; Do not ‘add your own’ safety factor by overestimating WLL—use standards.; The engineer selected a 3:1 design factor for the custom BTH.

Place dunnage under the transformer to allow sling removal.; Chock round stock with V-dunnage before tying down.; Use non-contaminating dunnage for painted components.

Set cones to mark the exclusion zone under the load path.; Only the signal person enters the exclusion zone during the pick.; Pause the lift—someone just walked into the red zone.

Use shoulder eyebolts and orient the eyes in line with the load.; Derate for 45° on that shoulder eyebolt per the chart.; Replace that plain pattern eyebolt—this is not a vertical lift.

Reposition the snatch block to reduce fleet angle to under 1.5°.; Poor fleet angle is crushing the first wrap on the winch drum.; Add a fairlead to control the fleet angle.

Calculate GBP with pick load, rigging, and crane configuration.; Use 8x8 mats to lower GBP to under 3,000 psf on this asphalt.; Confirm the slab’s allowable bearing with structural engineering.

Use the ‘emergency stop’ hand signal if anything looks unsafe.; Agree on signals during the pre-lift meeting.; Spotter, give the ‘boom up’ signal clearly from the operator’s line of sight.

This roundsling is missing its tag—remove it from service.; Confirm the WLL for a 60° bridle on the tag.; Record the sling ID in the lift plan.

Log the quarterly periodic inspection for all shackles.; During frequent inspection, I found a cut in the web sling.; Tag out the hoist until it passes periodic inspection.

We’ll jack-and-slide the press onto the foundation rails.; Use PTFE pads to lower friction on the slide beams.; Synchronize the jacks to keep the load level within 1/8 inch.

Include wind and pinch-point hazards in the JHA.; The JHA calls for tag lines and an exclusion zone.; Update the JHA when the lift radius changes.

The lift director will halt operations if wind exceeds limits.; Route all changes through the lift director.; The lift director confirmed ground conditions are verified.

Attach sketches of pick points and sling angles to the lift plan.; The client requires a PE-stamped critical lift plan.; Revise the lift plan to reflect the new crane radius.

Add two more tie-downs to meet FMCSA requirements.; Protect straps from cut edges with wear sleeves.; Check that aggregate WLL exceeds the cargo weight.

The shackle’s MBL is 6 times its WLL per spec.; Engineering selected a roundsling with higher MBL for redundancy.; Never use MBL as the allowed working load.

Perform MT on the lifting lug welds after fabrication.; UT the crane hook throat for internal flaws.; Schedule annual NDT for the spreader’s critical welds.

1926.1428 outlines signal person qualification.; 1910.184 applies to slings—follow its removal criteria.; Comply with 1926.1400 for crane operations on this site.

Install 4-layer timber mats under the northeast outrigger.; Check mat capacity against the calculated outrigger load.; Use level, compacted ground before setting pads.

The vessel has two pad eyes rated at 10 tons each.; Orient the shackle so the load line aligns with the pad eye.; Do not side-load the lifting lug; use a spreader if needed.

We need a PE-stamped lift beam drawing before fabrication.; The client requires a PE stamp on the lift plan calculations.; Get the pad-eye design sealed for the 45° load case.

Proof test the new spreader to 125% with calibrated load cells.; Record deflection during the proof load and compare to limits.; Issue a proof-test certificate for the client’s QA file.

Only a qualified rigger may select and attach the rigging.; Show documentation of your rigger qualification.; A qualified rigger evaluated the sling angles for this pick.

The shackle’s WLL is 8.5 tons—our leg load is under that.; Always use hitch-angle WLL, not the vertical rating.; If the tag WLL is unreadable, remove the sling from service.

Reeve the snatch block for a 2-part line to double line pull.; Incorrect reeving is causing cross-overs on the drum.; Check fleet angle after changing the reeving pattern.

The rigging triangle gives us a 45° leg angle—calculate leg loads.; Widen the pick points to reduce beam compression.; Use the triangle sketch in the lift plan to size hardware.

Use a polyester roundsling with wear pads on the sharp flange.; If the cover is torn exposing core yarns, remove it from service.; Check the tag for temperature limits before use near steam.

Avoid side loading the hoist hook—use a swivel or spreader.; Eyebolts must not be side-loaded unless rated and oriented.; Switch to a hoist ring to accommodate the angular pull.

Only the designated signal person talks to the operator.; Test radio communication before the pick.; If signals are unclear, the operator must stop and ask.

At 30°, the SAF is high—upsize the sling.; Use the SAF chart to find per-leg load at 45°.; Raising the pick points improves the angle and reduces tension.

Rig a snatch block to turn the winch line 90 degrees.; The sheave groove must match the wire rope size.; Anchor loads double at the snatch block when doubling the line—verify rating.

Use a spreader to avoid compressing the vessel shell.; A lifting beam fits better under low headroom.; Check end fittings—compression for spreader, bending for beam.

Assign two spotters to manage tag lines on the long load.; Do not tie tag lines to fixed objects.; Add a second tag line to control tail swing in the wind.

With two legs at 45°, each leg sees about 0.707× the total load per leg—check sizing.; Compute the multiplier before choosing shackles.; The multiplier at 30° requires moving to a 3-leg bridle.

Use a vertical hitch on each end and a spreader to balance the beam.; A single vertical hitch will tip if the CG is off—add a second pick point.; Check headroom—vertical hitch gives maximum length.

Suspend the lift—gusts are exceeding the 20 mph limit.; Large panels have high sail area—lower operational wind limits.; Secure the crane per the out-of-service wind chart.

This 10,000 lb winch has only 6,500 lb pull on the third layer.; Use a snatch block to double line pull and reduce drum load.; Keep the fleet angle small to prevent spooling damage.

Select 6x36 IWRC wire rope for better flexibility.; Remove the sling—broken wire count exceeds discard criteria.; Mind the D/d ratio when rigging over small pins.