Page 85 - Critical Control flipbook_Neat

Structural Collapse

1 What is the name of 2 What are its specific objectives related to the Priority Unwanted
the critical control for
Event (PUE)?
Structural Collapse?
Preventive Maintenance and Inspection Detect and address degradation of structural elements and material spills potentially
affecting them

3 What are the critical 4 What are the activities 5 What can be sampled from
control performance
within the management
the set of activities for
requirements to meet the systems that support verification, providing a
objectives? having the critical control clear image of the critical
able to do what is required? control status?
Routine housekeeping and cleaning Housekeeping program with areas Housekeeping frequencies,
allow inspections and prevent blockage defined and routinely monitored for accountabilities and records of ongoing
of sliding connections and/or structural build-up, leaks, spillage, emphasis on key execution
overloads (roofs and platforms) areas

Inspection of structural elements Annual inspection and assessment of Review records of annual inspection;
Including sliding connections/joints, steel and concrete structures confirm all structures are inspected
working platforms and elevated walkways

Periodic thickness measurements of Thickness monitoring process in place Review records and follow up actions on
bins/hoppers/silos/ducts and structural cross section thickness at risk
elements
Cross section thickness reduction of
structural elements shall not exceed 25%

Structures at risk are formally identified Annual assessment with action plan Review of high risks from inspection
and assessed by a competent person Expert assessment (for Level 1 risks) with records and related expert reports
and corrective actions are defined and action plan Verify actions being addressed
implemented

6 What is the target performance for critical 7 What is the critical control performance
control?
trigger for shutdown, critical control review or
investigation?
Structural degradation detected and prevented Significant material accumulation affecting structural elements.
Structural elements exceed 25% loss of cross section.
Annual inspections/assessments not completed

Creation date: 01/2021 • The latest and only controlled version of this document is available on the HSE intranet.
© 2021 Holcim - For internal use only