What lies beneath?
What lies beneath?
Disclaimer:
this safety moment is designed to prevent similar incidents occurring. All guidance herein is provided
in good faith and Step Change in Safety nor its member companies accept responsibility for any inaccuracies or
omissions contained within this safety moment.
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Insulation appears
to have parted and
dropped
Exhaust fumes were being
emitted from the bottom
of the stack, coating the
insulation in black, sooty
deposits.
An exhaust exiting
a drilling module
into a stack
The exhaust stack
Black, sooty deposit
What do you see?
What would you do?
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blank flange
•
The insulation was hiding the underlying problem
•
An exhaust stack would normally be a welded
sweeping curve without a flange
The exhaust stack as built
What hazards do you
see in this design?
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Detached blank flange
The exhaust stack after some time
Cladding was hiding a 73kg 16” flange which had become detached due to
bolt corrosion (corrosion under insulation – CUI) and was being supported
only by the cladding
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•
The flange fell through the insulation
and was found on the access platform
which had not been barriered off
•
The
73kg flange had dropped 20m
– a
potential fatality
according to the
DROPS calculator
What happened next
Can you think of any hidden
problems at your worksite?
Grating where flange impacted
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Warning signs not addressed
•
Previous safety observations noted that the cladding looked like a potential
dropped object
•
There were long-standing concerns raised that exhaust fumes were present
in the drilling module
Assumptions made
•
Because it was an exhaust stack, it was assumed the pipework was a
sweeping bend and not a T piece (drawing not checked and no
investigations made) and it therefore did not pose an immediate drops
threat
•
It was assumed that the drops threat was only cladding
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Consider the following:
•
When a potential dropped object is identified, consider:
•
What is concealed underneath cladding?
•
What might fall?
•
Where might it fall?
•
Any defect observation should include as much detail as possible to allow a
full understanding of the situation
•
Do not make assumptions about the configuration and condition of plant
under cladding – investigate fully
Which of the 7Cs are involved in this safety
moment
?
•
Change management
•
Communication
•
Complacency
•
Control of work
•
Competence
•
Culture
•
Commitment
Did this presentation result in discussion that could lead to creating
another alert to share with industry? Please contact :
info@stepchangeinsafety.net
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Delve into the risks lurking beneath the surface with real-life scenarios showcasing the importance of vigilant safety measures. Explore the consequences of unaddressed warning signs and assumptions, emphasizing the critical need for thorough inspection and risk assessment in workplace safety protocols.
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Presentation Transcript
What lies beneath? Disclaimer: this safety moment is designed to prevent similar incidents occurring. All guidance herein is provided in good faith and Step Change in Safety nor its member companies accept responsibility for any inaccuracies or omissions contained within this safety moment.
What lies beneath? What lies beneath? The exhaust stack Exhaust fumes were being emitted from the bottom of the stack, coating the insulation in black, sooty deposits. Black, sooty deposit Insulation appears to have parted and dropped An exhaust exiting a drilling module into a stack What do you see? What would you do?
What lies beneath? What lies beneath? The exhaust stack as built insulation Exhaust fumes from a diesel engine blank flange What hazards do you see in this design? The insulation was hiding the underlying problem An exhaust stack would normally be a welded sweeping curve without a flange
What lies beneath? What lies beneath? The exhaust stack after some time insulation Exhaust fumes from a diesel engine Detached blank flange Cladding was hiding a 73kg 16 flange which had become detached due to bolt corrosion (corrosion under insulation CUI) and was being supported only by the cladding
What lies beneath? What lies beneath? What happened next The flange fell through the insulation and was found on the access platform which had not been barriered off The 73kg flange had dropped 20m a potential fatality according to the DROPS calculator Can you think of any hidden problems at your worksite? Grating where flange impacted
What lies beneath? What lies beneath? Warning signs not addressed Previous safety observations noted that the cladding looked like a potential dropped object There were long-standing concerns raised that exhaust fumes were present in the drilling module Assumptions made Because it was an exhaust stack, it was assumed the pipework was a sweeping bend and not a T piece (drawing not checked and no investigations made) and it therefore did not pose an immediate drops threat It was assumed that the drops threat was only cladding
What lies beneath? What lies beneath? Consider the following: When a potential dropped object is identified, consider: What is concealed underneath cladding? What might fall? Where might it fall? Any defect observation should include as much detail as possible to allow a full understanding of the situation Do not make assumptions about the configuration and condition of plant under cladding investigate fully
What lies beneath? What lies beneath? Which of the 7Cs are involved in this safety moment? Change management Communication Complacency Control of work Competence Culture Commitment Did this presentation result in discussion that could lead to creating another alert to share with industry? Please contact : info@stepchangeinsafety.net
