Page 57 - Critical Control flipbook_Neat

Liquid Fuel Fire

1 What is the name of the 2 What are its specific objectives related to the Priority Unwanted
Event (PUE)?
critical control for Liquid
Fuel Fire?
Leak-Free System Prevent corrosion, erosion and pinhole leaks by selecting compatible material for
pipework, flexible hose, valves, flanges/gasket/unions, pump and vessels that minimises
the likelihood of failure

3 What are the critical 4 What are the activities 5 What can be sampled from
within the management
control performance
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?

Appropriate installation methodology Approved piping and vessel specification Field verification of installation against
used (e.g. flanged, welded, screwed, Material specification available the piping specification
socket fusion, butt fusion welded, solvent in Computerized Maintenance Mechanical fitter aware of material
cement, etc.) with the specified torque to Management System (CMMS) for parts specification
give leak free service and spares
Written installation methodology

Adequate pressure rating, testing and Approved piping and vessel specification 100% completion rate of pressure testing
specification of materials Material specification available in CMMS
(e.g. PN16, hydrostatic test, pneumatic for parts and spares
testing, etc)
Written testing methodology
Adequate corrosion, erosion allowance Approved piping and vessel specification Specified corrosion and erosion
and thickness of materials Material specification available in CMMS allowance
Ensure corrosion under insulation is for parts and spares
addressed, and inspected

Selection of material compatible Approved piping and vessel specification Pipework and other materials
with the fuel and service Material specification available in CMMS for compliance to piping specification
(e.g. stainless steel, alloys, PTFE, etc) parts and spares

6 What is the target performance for critical 7 What is the critical control performance
trigger for shutdown, critical control review or
control?
investigation?
A written piping specification available with material selection, Incompatible material selection leading to frequent (more than
thickness and pressure allowance, testing and construction 1 per month) minor leaks (pump seal, gasket, pinhole) occurs
methodology. Repairs and maintenance carried out in accord- Unauthorised modification (material selection, construction
ance with the piping standard (CMMS) methodology) leading to a loss of containment incident

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