What are the specifications of a crane?
Specifications Cranes require separate values for bridge and hoist speed and acceleration. You must enter Speed (Empty), Speed (Full), and Accelerate and Decelerate values for bridge movement along the rails and hoist movement across the bridge.
What does OSHA consider a crane?
A crane is a machine for lifting and lowering a load and moving it horizontally, with the hoisting mechanism an integral part of the machine. Floor-operated crane means a crane which is pendant or nonconductive rope controlled by an operator on the floor or an independent platform.
What guidelines should you follow when using a crane with outriggers?
- If a crane has outriggers they should be used on every lift.
- All outriggers on a crane must be used if an outrigger load chart is being used for calculating load capacities.
- Even on ideal, solid ground always use outrigger floats or mats.
- Use of a crane’s outriggers is your choice.
What is the minimum factor of safety for a crane?
CMAA safety factor for the wire rope is 5:1 for standard cranes, and 8:1 for molted metal cranes.
What is a 5 to 1 safety factor?
These single use/single trip bags are rated at a 5:1 safety factor ratio (SFR) which means that they have the ability to hold five times the amount of their safe work load (SWL). Remember, although the bag is rated to hold five times the rated safe working load, doing so is unsafe and is not recommended.
What is a qualified rigger?
A qualified rigger is a rigger who meets the criteria for a qualified person. Employers must determine whether a person is qualified to perform specific rigging tasks. Each qualified rigger may have different credentials or experience.
How do you become a qualified rigger?
In order to become a Certified Rigger in California, candidates must pass both a Written and a Practical Examination. Candidates have 12 months from when they pass either the Written or the Practical Exam to pass the corresponding (Written or Practical) Exam for each rigger certification level.
What does OSHA mean by a qualified rigger?
A qualified. rigger is a person that: • possesses a recognized degree, certificate, or. professional standing, or. • has extensive knowledge, training, and experi-
How do you prevent employees from entering the fall zone of a suspended load?
Staying Outside to Fall Zone
- Avoid carrying loads over people.
- At a minimum, stay at least 10 feet radius from where a suspended load could fall if there was failure.
- Remember that a suspended load can be anything moved using equipment, like a crane, forklift, hoist or tractor bucket.
When must an enclosed chute be used?
Whenever materials are dropped more than 20 feet to any point lying outside the exterior walls of the building, an enclosed chute of wood, or equivalent material, shall be used.
What criteria must be met when making a multiple lift?
Multiple lift rigging procedure. This capacity, certified by the manufacturer or a qualified rigger, shall be based on the manufacturer’s specifications with a 5 to 1 safety factor for all components. The rigging capacity specified in the rigging rating chart. Rigged at least 7 feet (2.1 m) apart.
What is a multiple lift?
Answer: We understand your reference to “multiple rigging lifts” as a procedure in which several members are hoisted simultaneously on a single load line by a series of sequential attachment points (see illustrations of two different types of such lifts below):
What is hoist Reeving?
Reeving (rope): The reeving of the hoist is the path of the rope between the hoist and the load block. Double reeving is two parts of wire rope leading off of the drum, one from each end of the drum, creating a hook movement referred to as True Vertical Lift.
What is the minimum height for fall protection for connectors?
Under the OSHA Subpart-R standard, connectors are not required to tie-off between 15 feet and 30 feet while performing connecting activities for any type of structural member.
What is the OSHA standard for fall protection?
OSHA requires that fall protection be provided at elevations of four feet in general industry workplaces, five feet in shipyards, six feet in the construction industry and eight feet in longshoring operations.
At what height do I need to wear a harness?
Explained. Currently, OSHA requires that employers provide fall protection for construction workers on a walking or working surface with an unprotected edge that is 6 feet or more above a lower level.
What are the 4 methods of fall protection?
There are four generally accepted categories of fall protection: fall elimination, fall prevention, fall arrest and administrative controls.
What are the 2 types of fall protection?
There are two major types of fall arrest: general (nets) and personal (lifelines). The fall arrest system only comes into service when or if a fall occurs. According to OSHA standards, only retractable lifelines, or full-body harnesses with shock-absorbing lanyards are accepted as personal fall arrest systems.
What is the most common fall protection?
guardrails