Preventive measures Checking preventive measures Corrective action Causes What to check Signs that action is needed Event: NOT ENOUGH WATER Possible hazards: Hazards associated with poor hygiene. Level of risk: High C1.4.1 Make sure tank is big Water level in Water supply often Get new tank. enough. tank. runs out. Too little rainfall Find a new or as well as too Make sure guttering is Rate of water Water level is low. additional little storage, strong enough for use. source of water. Signs of water high use of wind and snowfall leaking from tank. Repair tank water, or a leak conditions. and/or in tank or Check tank and guttering. guttering. guttering monthly for Take steps to leaks. save water. Stop unnecessary use of water. C1.4.2 Do preventive Pump Frequent pump Revise, or put in maintenance on maintenance breakdowns. place a pump Mechanical pump: log. maintenance failure of pump Pump maintenance schedule. daily visual (header tank not being done. inspections short of water). lubrication seal replacement leaks repaired corroded components replaced annual ammeter tests. Planned maintenance programme for replacement of pump parts (follow per manufacturer’s recommendations). C1.4.3 Install an alarm that Alarm. Alarm is triggered. Make warns that the power arrangements Power failure to Electricity No electricity has failed. to get a more pump. supply. reaching the pump. reliable power Install a stand-by Water flow. No water flow to supply. generator. header tank when Regularly maintain pump should be the power supply (if operating. you have a diesel generator, for example).
Causes Preventive measures Checking preventive measures Corrective action What to check Signs that action is needed Event: NOT ENOUGH WATER Possible hazards: Hazards associated with poor hygiene. Level of risk: High C1.4.1 Too little rainfall as well as too little storage, high use of water, or a leak in tank or guttering. Make sure tank is big enough. Make sure guttering is strong enough for wind and snowfall conditions. Check tank and guttering monthly for leaks. Stop unnecessary use of water. Water level in tank. Rate of water use. Water supply often runs out. Water level is low. Signs of water leaking from tank. Get new tank. Find a new or additional source of water. Repair tank and/or guttering. Take steps to save water. C1.4.2 Mechanical failure of pump (header tank short of water). Do preventive maintenance on pump: daily visual inspections lubrication seal replacement leaks repaired corroded components replaced annual ammeter tests. Planned maintenance programme for replacement of pump parts (follow per manufacturer’s recommendations). Pump maintenance log. Frequent pump breakdowns. Pump maintenance not being done. Revise, or put in place a pump maintenance schedule. C1.4.3 Power failure to pump. Install an alarm that warns that the power has failed. Install a stand-by generator. Regularly maintain the power supply (if you have a diesel generator, for example). Alarm. Electricity supply. Water flow. Alarm is triggered. No electricity reaching the pump. No water flow to header tank when pump should be operating. Make arrangements to get a more reliable power supply.
example-small-rainwater-supply-feb14-v2.docx