Shed issues: high organic matter

Table 37. Troubleshooting high organic matter

Operational monitoring
Parameter	Target criteria	Critical limits	Monitoring method
Turbidity	<1 NTU	Water filters are set to achieve the required organic matter removal to achieve colour and turbidity target.	Online, continuous turbidity or colour meter. 24-hour monitored alarms on monitoring meters. Appropriate electronic or hard copy monitoring records.
Colour	0–15 HU
Corrective action Any breach in critical limits or target criteria should result in any of the following operating procedures as necessary: inspect and calibrate equipment, if consumable: replace filters, backwash filters, adjust flow rate, change to a different filter micron, change filtration point, carry out additional monitoring, increase sampling and testing, implement unplanned maintenance procedure, add a secondary filter, use alternative supply with low organic matter, engage backup equipment, plant automatic shutdown, implement emergency response, and record actions to be taken and report (internally or externally as required).
Verification Calibration and maintenance of equipment TDS, turbidity and colour monitoring Satisfactory production Evaluation and audit