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Saturday, January 2, 2021

HIRA for Lifting of Mechanical Grab Excavator

Lifting of Mechanical Grab Excavator and Placing it at Required Job Location by 75 MT Crane

Activity:

1. Slings of grab excavator kept on low be trailer will be placed on the hook of the crane properly

Hazards/Risk

  • Improper Stacking/Body injury 
  • Caught in b/w load and sling/body injury     
  • Existing Control Measure 
  • The load should be kept on wooden sleepers in stable positions PPE's
  • No movement of the load should be allowed while placing the sling on the hook of the crane

Activity:

2. Grab excavator will be lifted vertically by 1.5 to 2 m from the static position to clear the bed.

Hazards/Risk

  • Uneven and lose surface/ toppling of crane
  • Improper maintenance / crane failure
  • Untrained operator and signalman / Crane collapse
  • Improper assessment/Fall of load
  • Improper barrication/body injury

Existing Control Measure 

  • Before using crane the area should be checked and levelled properly.
  • Periodical maintenance by P&M Dept. should be done and third-party inspection detail (form 10) should be attached.
  • Medical fit and trained operator should be deployed for the operation.
  • Proper assessment of crane safe working load at the particular radius should be done according to load to be lifted as per load chart.
  • Barrication should be provided in swing area and unauthorized entry should be strictly stopped.

Activity:

3. Move the grab excavator in the right direction so that any interaction of swinging of the crane does not occur.

Hazards/Risk

  • Free swing of crane/hit to structure or person
  • Frequent movement of person/body injury
  • Existing Control Measure 
  • Proper attention should be paid for any interaction.
  • No movement of persons is allowed under the load.

Activity:

4. Take the Grab Excavator up to the job location where excavation is to be done

Hazards/Risk

  • Untrained operator and signalman/fall of frame
  • Improper barrication/body injury

Existing Control Measure 

  • Medical fit and trained operator and signalman should be deployed for the operation.
  • Barrication should be provided around the working area and unauthorized entry should be strictly stopped.

Activity:

5. Position the Grab Excavator properly to start the excavation process.

Hazards/Risk

  • free swing of grab excavator/hit to structure and person
  • Improper barrication/body injury
  • Movement of the unauthorized person close to the excavated area

Existing Control Measure 

  • Double leg sling should be used with guide rope at both ends.
  • Barrication should be provided around the working area and unauthorized entry should be strictly stopped.
  • No unauthorized person shall be allowed at site location and authorised personal should wear a safety belt and proper attention should be paid all around the area

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