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What happened?
Operators performing inspections found a height clearance bar attached to a high voltage (HV) cable carriage way had become detached at one end and was suspended in the vertical position.
Further investigation found the D shackle and the bracket that attaches the D shackle to the carriage way fixing point on the ground disassembled.
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Why did it happen?
The carriage way for the HV cable and associated height clearance bar was installed as a modification to the existing gas plant.
Both fixing components (D shackle and bolted angle bracket) had come undone and were found on the ground.
D shackle did not have a secondary fixing device such as a split pin in the shackle bolt.
A potential contributing factor was high winds over the previous few days.
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What did they learn?
Identify and inspect D shackles and mounting bolts used to retain clearance bars and other objects at height.
Employ a secondary securing device such as a split pin on D shackle bolts used to retain objects at height.
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Ask yourself or your crew
Do you have height clearance bars and other objects at height retained by D shackles on your site? Are these D shackles secured by secondary retention? How do you report cases where this secondary retention is missing (potential dropped objects)?
Do you carry out periodic inspections of D shackles and mounting bolts used for these types of applications?
Are the inspection criteria for D shackles and mounting bolts clearly defined? (e.g. correct type of shackle for application; secondary retention fitted).
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What happened?
Operators performing inspections found a height clearance bar attached to a high voltage (HV) cable carriage way had become detached at one end and was suspended in the vertical position.
Further investigation found the D shackle and the bracket that attaches the D shackle to the carriage way fixing point on the ground disassembled.
Why did it happen?
The carriage way for the HV cable and associated height clearance bar was installed as a modification to the existing gas plant.
Both fixing components (D shackle and bolted angle bracket) had come undone and were found on the ground.
D shackle did not have a secondary fixing device such as a split pin in the shackle bolt.
A potential contributing factor was high winds over the previous few days.
What did they learn?
Identify and inspect D shackles and mounting bolts used to retain clearance bars and other objects at height.
Employ a secondary securing device such as a split pin on D shackle bolts used to retain objects at height.
Ask yourself or your crew
Do you have height clearance bars and other objects at height retained by D shackles on your site? Are these D shackles secured by secondary retention? How do you report cases where this secondary retention is missing (potential dropped objects)?
Do you carry out periodic inspections of D shackles and mounting bolts used for these types of applications?
Are the inspection criteria for D shackles and mounting bolts clearly defined? (e.g. correct type of shackle for application; secondary retention fitted).
Operators performing inspections found a height clearance bar attached to a high voltage (HV) cable carriage way had become detached at one end and was suspended in the vertical position. Further investigation found the D shackle and the bracket that attaches the D shackle to the carriage way fixing point on the ground disassembled.
Original material courtesy of Safer Together (Australia)
To access the PDF and PowerPoint versions, please visit https://www.safertogether.com.au/resources/sharing-library/working-on-near-fixed-equipment-person-in-line-of-fire-leb-toolbox
