The Definition of Tag Line

Definition of Tag Line

A tag line is a rope or line attached to a load being lifted by a crane or hoist so that workers on the ground or on a structure can steady it, stop it from spinning and guide it into position. Tag lines let workers control the load while staying out from under it and out of its swing path.

Without control, a suspended load can rotate in the wind, swing into a building or structure, or knock a worker off a deck. Workers who try to steady a load with their hands are drawn into the fall zone and into pinch points between the load and fixed objects. Tag lines reduce both struck-by and caught-in/between hazards during lifting.

Regulations and Standards for Tag Lines

Cranes Near Power Lines

OSHA's cranes and derricks standard, 29 CFR 1926 Subpart CC, addresses tag lines directly when equipment works near energized lines. Under 1926.1408 and 1926.1410, if tag lines are used during operations near overhead power lines, they must be nonconductive. A wet or conductive line can carry current to the worker holding it if the load or rigging contacts a line.

Controlling Loads

Federal OSHA treats load control as a performance requirement. In interpretation letters, OSHA has explained that the intent is for loads that pose a hazard to employees to be kept under control at all times, so tag lines are needed when wind or other conditions can cause a load to swing, rotate or become unbalanced. Some state plans are more specific. Oregon OSHA's steel erection rules, for example, require tag lines to control loads unless a qualified rigger determines that their use creates a hazard.

Keeping Clear of the Load

OSHA's rules on keeping clear of suspended loads, in 1926.1425, limit who may be in the fall zone and when. Using tag lines of adequate length helps workers guide a load without standing directly beneath it. Lifts should be planned so that tag line handlers have a clear, stable place to stand. See lift plan and keep-out zone.

Using Tag Lines Safely

Selecting the Line

• Material: Use nonconductive synthetic rope for work near power lines, and keep it clean and dry.
• Length: Choose a line long enough that the handler can stay outside the fall zone and swing radius.
• Condition: Inspect lines for cuts, abrasion, chemical damage and knots before use, and remove damaged lines from service.
• Attachment: Attach the line to the load or rigging so it cannot slip off, and away from points where it could foul the rigging.

Handling the Load

• Never wrap the line: Do not wrap a tag line around a hand, wrist or body. If the load moves suddenly, the handler can be pulled off their feet or off a structure.
• Keep the line free: Let the line run freely and do not tie it off to a fixed object.
• Stay clear of pinch points: Do not stand between the load and a wall, column or other equipment.
• Use two lines when needed: Long or awkward loads, such as beams and panels, may need a tag line on each end.
• Follow the signal person: Tag line handlers should take direction from the qualified signal person and know the stop signal.
• Watch your footing: Make sure handlers are on stable ground or protected by fall protection if working at an edge.

When Tag Lines Can Create Hazards

In some cases, a tag line may make a lift less safe, such as when it could snag on equipment, when there is no safe place for the handler to stand, or during multiple-piece lifts where lines could tangle. The decision not to use a tag line should be made by a qualified rigger or lift supervisor as part of lift planning, with other means of load control identified.

Example of Tag Line

A crew is lifting precast concrete wall panels into place on a windy morning. During the pre-lift meeting, the lift supervisor assigns two workers to handle tag lines attached to each end of the panels. The lines are long enough for the handlers to stand well outside the load path, and the rigger checks them for wear before the first pick.

As the third panel is lifted, a gust starts to turn it toward a column. The handlers apply steady tension to stop the rotation while the operator holds the load on the signal person's command. One new worker begins to loop the line around his hand for a better grip, and the supervisor stops him and reviews why the line must never be wrapped. The panel is set without contact, and the crew notes the wind limit in the lift plan for the rest of the day.

Frequently Asked Questions: Tag Line

Does OSHA require tag lines on every lift?

Federal OSHA requires loads that could pose a hazard to be controlled, and tag lines are the usual way to do that when wind or conditions could cause swinging or rotation. Some state plans, such as Oregon OSHA for steel erection, require tag lines unless a qualified rigger decides they would create a hazard.

What type of tag line should be used near power lines?

OSHA requires tag lines used during crane work near power lines to be nonconductive.

Can a tag line be tied to the handler?

No. Tag lines should never be tied or wrapped around a person. A sudden load movement could pull the worker into the load or off a structure.

How long should a tag line be?

Long enough for the handler to control the load while staying out of the fall zone and swing path. The exact length depends on the lift height, load size and site layout.