A Crane safe Work Permit will be approved by Owner Representative for cranes that have lifting load greater than 50 tons or for all cranes if the lift is a critical lift.
15.1 Critical Lift
a. Two cranes are used [Owner’s Representative can use his discretion in cases where light, long loads are lifted with two cranes for handling convenience].
Two cranes are used for pipe lifting can be provide as typical lifting plan / procedure.
b. Load exceeds 80 % of the crane capacity at the radius and boom extension required for the lift.
c. Lifting is over personnel, operating facilities, or critical equipment.
d. Lifting of personnel in a Man- basket.
15.2 Operations
A crane operator must always observe the following minimum safety precautions, please refer to Pre-Lift Safety Checklist
Maintain continuous contact, either visual or vocal, with a qualified signalperson. [If for any reason that contact is lost, the crane operator must stop all operations until full contact is respond.]
Store items such as tools, oil cans, and waste materials in a tool box. [Do not leave any lose items in the cab.]
Be constantly alert to the effects of dynamic loading when swinging, hoisting and lowering the load or when moving the crane.
Prior to moving a crane into the area, evaluate underground conditions for crane stability and for the possibility of damage to underground facilities or injury the personnel.
Make sure the hoist is vertical at all the times.
Barricade the swing radius of the counterweight. Use other barricades according to the site procedures.
Know the radius of the load at all the times.
Keep the load directly under the trolley at all the times.
Make sure the crane hook safety latches are in good working order and are use properly.
Follow the manufacture instructions to entering and exiting the crane cab. [The only acceptable alternative to these instructions is using a straight ladder that has been tied to the crane.
Do not operate cranes when the wind speeds exceed 35 mph [56 Kmh].
Lower the booms when storm or winds exceed the limits in the manufacturer recommendations.
Make sure cranes are able to weather vane I high winds and when left overnight or unattended.
Use tag lines to control loads at all the times.
Make sure the crane is level to within 1 percent of grade before operations begin. [When the crane is not level, high side loads are transmitted into the boom, causing an unsafe condition.]
Make sure that when the crane is loading or unloading trucks, the truck’s cab is unoccupied.
Do not leave the controls when the load is suspended.
Make sure that no one works, stands, or walks under a suspended crane load and that no one rides the hook or the load.
Do not allow anyone else on the crane when is in use.
Keep the loading/unloading areas clear of personnel.
Keep the swing path clear.
Follow the manufacture recommendations for maximum allowable loads and maximum boom lengths. [Remember that the weights of hooks, hooks blocks, balls slings, and all other load handling devices are considered part of the load.
When any part of the equipment of load could come within 6 meters of a electrical source or hazardous pipes during the planned swing radius.
Consider flammable and explosive classifications before using a crane in an operating area.
Make sure that the equipment is shut down and a fire extinguisher is available during refueling.
15.3 INSTRUCTIONS
Light Lifts Planned and Executed using good rigging
[10 tons and less] practices.
Rigging operation is under supervisor direction,
using qualified crane operators and qualified
riggers
[more than 10 less than 50 ton] Rigging plans are required. Rigging
Lifting Engineer is required to approve all medium lift plans.
Light lifts do not require a formal rigging plan or calculations. However, light lifts shall be performed under the direction of a superintendent, a qualified crane operator, and a qualified rigger using safe rigging work practices.
15.4 Rigging Approach
15.4.1 The Construction Manager shall determine applicable codes and standards pertaining to rigging and hauling operations at the construction site. Local jurisdictional regulations, owner requirements, and manuals shall form the basis of the project-specific requirements.
15.4.2 This procedure establishes minimum guideline for the review and approval of hauling and lifting plans. The project rigging plan shall identify any project specific requirements that exceed these minimum standards.
15.4.3 Construction Manager, Rigging Engineer shall be aware that all lifts must be categorized [light, medium, heavy, or critical]. All lifts are to be planned in accordance with specific requirements of their category.
15.5 Categorization of lifts shall be an ongoing activity for the duration of the project.