Event: TOO LITTLE WATER CAN BE DRAWN FROM THE INTAKE TO MEET DEMAND (cont’d) P1.1.6.4 Maintenance Telemetric No water. New pumps. according to records Pump failure Alarm Instigate manufacturers’ (see also Guide Maintenance activated. maintenance recommendations. P10). records. programme. No Standby pump with maintenance auto-switch to record. alternate pumps. Operate duty and standby pumps using an alternate ‘number of days cycle’. Telemetric alarm for low flows. P1.1.6.5 Regular inspection of No water. Consult with cabling, power lines power Power failure. and connectors. authority. Stand-by generator. Obtain generator. Battery backed-up alarms. P1.1.6.6 Construct a fence Damage to the around the intake intake. Vandalism/ site. sabotage. Evidence of Install intruder attempts to gain access to the intake. Contingency Plans If an event happens despite preventive and corrective actions you have taken, you may need to consult with the Medical Officer of Health to assess how serious a problem is. Water quality too poor to treat Event – Water too turbid or too coloured to treat. Indicators: Turbidity of water leaving plant consistently greater than 0.2 NTU‡ (See DWSNZ:2000).
Event: TOO LITTLE WATER CAN BE DRAWN FROM THE INTAKE TO MEET DEMAND (cont’d) P1.1.6.4 Pump failure (see also Guide P10). Maintenance according to manufacturers’ recommendations. Standby pump with auto-switch to alternate pumps. Operate duty and standby pumps using an alternate ‘number of days cycle’. Telemetric alarm for low flows. Telemetric records Maintenance records. No water. Alarm activated. No maintenance record. New pumps. Instigate maintenance programme. P1.1.6.5 Power failure. Regular inspection of cabling, power lines and connectors. Stand-by generator. Battery backed-up alarms. No water. Consult with power authority. Obtain generator. P1.1.6.6 Vandalism/ sabotage. Construct a fence around the intake site. Install intruder Damage to the intake. Evidence of attempts to gain access to the intake. Contingency Plans If an event happens despite preventive and corrective actions you have taken, you may need to consult with the Medical Officer of Health to assess how serious a problem is. Event – Water quality too poor to treat Indicators: Water too turbid or too coloured to treat. Turbidity of water leaving plant consistently greater than 0.2 NTU‡ (See DWSNZ:2000).
treatment-rivers-streams-galleries-feb14-v2.docx