“With crews sometimes waiting for several years before beginning system operations, the knowledge imparted during training sessions will have undoubtedly depleted. Operational problems with ballast water treatment systems ( BWTS ) have been reported by 60 - 70 % of Intertanko 's members who have installed the systems , but in many cases , the systems were installed several years ago but not tested until they had to be used , said Stelios Kyriacou of the BWMS , De Nora . To ensure BWTS are ready for operation , crews should conduct full unit inspections prior to restarting a unit that has not been operational for a while , re - inspect to ensure operational readiness , or provide a training update for crew .
Operational problems with ballast water treatment systems ( BWTS ) have been reported by 60 - 70 % of Intertanko 's members who have installed the systems , but in many cases , the systems were installed several years ago but not tested until they had to be used , said Stelios Kyriacou of the BWMS , De Nora . To ensure BWTS are ready for operation , crews should conduct full unit inspections prior to restarting a unit that has not been operational for a while , re - inspect to ensure operational readiness , or provide a training update for crew .