What are Category 1 crane types?
Category 1 cranes come in a wide variety of sizes and configurations and include: portal cranes, hammerhead cranes, locomotive cranes, derricks, YD floating cranes*, tower cranes, container cranes, mobile cranes, aircraft crash cranes, mobile boat hoists including self-propelled and towed types, and rubber-tired gantry …
What are Category 3 cranes?
Category 3 cranes are those with a certified capacity of less than 20,000 lbs.
How is current carried from a building or shore power to the bridge and trolley of category 2 and 3 cranes?
Category 2 and 3 Crane Power Supply Current to Category 2 and 3 cranes is carried from the building or shore power to the bridge and trolley by an insulated electrification conductor system, festoon system, or cable track system.
Why is it important to have bent or dented crane boom members inspected and evaluated?
It is important to have bent or dented crane boom members inspected and evaluated because they can greatly reduce the strength of a boom, possibly resulting in sudden collapse of the boom. Gantry, Pendants, and Boom Stops Check the condition of the gantry, pendants, and boom stops.
What is tower cranes?
Tower cranes are a modern form of balance crane that consist of the same basic parts. Fixed to the ground on a concrete slab (and sometimes attached to the sides of structures), tower cranes often give the best combination of height and lifting capacity and are used in the construction of tall buildings.
What is a boom crane?
A boom truck crane, or a telescoping crane, uses high-boom angles and a hoist to lift loads. These cranes are designed for strength and stability and are typically used to lift heavy loads vertically.
What is meant by skewing crane?
Overhead crane skewing is when the bridge is not perfectly perpendicular to the runway. It can be caused by a variety of conditions and must be fixed before operations begin.
What is the anti two block?
Anti two-block or ATB systems help prevent the ball block from contacting the boom tip. This is called two-blocking and can cause injury or death as well as damage to the crane, load line and ball or block. The ATB switch connects to the crane’s LMAP system through a wire or battery-powered transmitter.
What is CT and LT in crane?
LT End carriage : Structure which houses Long Travel Wheels. CT End carriage : Structure which houses Cross Travel Wheels.
What is an equalizer sheave?
SHEAVE, NONRUNNING (EQUALIZER): A sheave used to equalize tension in opposite parts of the rope. Because of its slight movement, it is not termed a running sheave.
Can inspectors operate a crane?
Our answer was: “OSHA is very clear that cranes must receive inspections on a regular basis and under various circumstances, and these inspections must be performed by either competent or qualified persons.
Who should inspect a crane?
OSHA regulations only require that such equipment be inspected during initial use and annually thereafter by a “competent person”, or by a government or private agency recognized by the U.S. Department of Labor. The owner must, also, maintain a record of these inspections.
Where do I enter NCC CE in my maintenance application?
If you use NCC CE modules, they are automatically entered into your maintenance application and you can review them at any time. You can enter your maintenance application as often as you like to review your maintenance requirements. Click on “Maintenance Application/Add CE” to go to your maintenance application.
What do you need to know about NCC-E credential?
The NCC-E credential provides special recognition for the accomplishments of PERMANENTLY RETIRED Certified Professionals made during the active part of their careers. This is not a certification, but a lifetime emeritus status demonstrating on-going recognition of previous certification.
How long does a NCC certification stay valid?
All NCC certifications are valid for three years. To maintain your certification you should enter required CE earned during your maintenance cycle into your maintenance application.
How to apply for lifetime NCC E status?
You can apply for your lifetime NCC-E status by completing the online application and paying the $90 fee. Access the online NCC-E Application
