4.58 Inspection of Potable water tanks should be inspected after installation and at least ST potable water tanks once every 24 months in order to identify potential defects or inadequate functioning. Operational of dirt inside the tank water does not appear turbid inspection covers are not damaged and are in place absence of cracks in tank structure cross connections not found. of storage tanks Potable water storage tanks should be ST Operational cleaning procedures observed. prevention assemblies should be tested after each installation and at 4.60 Testing of ST backflow least every 12 months or in accordance with the manufacturer’s prevention instructions. Operational defects in the backflow prevention assemblies spotted during testing. 4.61 Inspection of Visual inspections of the potable water distribution (pipes, ST the piping system connections) should be conducted routinely ideally every 12 months where during routine maintenance. Operational of leakage, corrosion or cross connections 4.62 Repair and The maintenance. ST maintenance of Operational maintenance and repair procedures observed. piping system ST Management Plan Item Details /ST Corrective actions 4.64 Corrective When operational monitoring shows that the existing control ST actions measures are not operating effectively, corrective actions should be taken to ensure the system is functioning safely again as soon as possible. Verification monitoring 4.65 The microbiological quality of the water supplied for human Microbiological consumption on passenger ships must be verified on a regular indicator basis.
4.58 Inspection of potable water tanks Potable water tanks should be inspected after installation and at least once every 24 months in order to identify potential defects or inadequate functioning. Operational of dirt inside the tank water does not appear turbid inspection covers are not damaged and are in place absence of cracks in tank structure cross connections not found. ST of storage tanks Potable water storage tanks should be Operational cleaning procedures observed. ST 4.60 Testing of backflow prevention prevention assemblies should be tested after each installation and at least every 12 months or in accordance with the manufacturer’s instructions. Operational defects in the backflow prevention assemblies spotted during testing. ST 4.61 Inspection of the piping system Visual inspections of the potable water distribution (pipes, connections) should be conducted routinely ideally every 12 months where during routine maintenance. Operational of leakage, corrosion or cross connections ST 4.62 Repair and maintenance of piping system The maintenance. Operational maintenance and repair procedures observed. ST ST Management Plan Item Details /ST Corrective actions 4.64 Corrective actions When operational monitoring shows that the existing control measures are not operating effectively, corrective actions should be taken to ensure the system is functioning safely again as soon as possible. ST Verification monitoring 4.65 Microbiological indicator The microbiological quality of the water supplied for human consumption on passenger ships must be verified on a regular basis.