Page 133 - Critical Control flipbook_Neat

Water Pollution

Discharge

1 What is the name of the 2 What are its specific objectives related to the Priority Unwanted
critical control for Water
Event (PUE)?
Pollution Discharge?
Treatment system Treatment systems avoid exceedances of polluted water discharges

3 What are the critical 4 What are the activities 5 What can be sampled from
the set of activities for
control performance
within the management
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?
Treatment system is designed and Procedures are in place to address Record of regulatory permit and
operated to meet water quality and any deviations from operating limits requirements and check to see if they are
quantity parameters (e.g. TDS, pH, (e.g. influent flow rate, settling times, considered in treatment schemes
temperature) based on regulatory, discharge rate) to ensure system meets Discharge records are within operating
permits, consents and/or group limits quality/quantity limits preventing limits
discharge exceedances Site observation, check for controls
Major changes impacting treatment to handle peak volume loads from
systems are assessed ahead of time production or rain events (e.g. alarms,
to verify that system can still meet diversion system, spillover pond,
discharge limits emergency basin)
Record from Review Management of
Change (MoC) of last major change
and check if treatment methodology
considered . Verify discharge parameters
before and after changes

Water treatment equipment is regularly Preventive maintenance and inspection Record of critical equipment identified
inspected and maintained schedules of critical equipment are and periodicity of inspections, PMs
executed following manufacturers recorded, check last inspection
instructions performed
Routine maintenance on other Record of last structural inspection and
components for treatment system corrective actions
identified and scheduled Incidents and findings related to
Inspections to include visual and discharge exceedances, note if cause was
non-destructive testing on structure due to equipment failure
of treatment system for containment
(slopes, erosion, cracks)

6 What is the target performance for critical 7 What is the critical control performance
control?
trigger for shutdown, critical control review or
investigation?
Water treatment system is able to keep discharges within Exceedances against regulation, permits, consents and/or group
regulatory, permits, consents and/or group limits limits

Creation date: 01/2022 • The latest and only controlled version of this document is available on the HSE intranet.
© 2022 Holcim - For internal use only