Table 5.18 Criteria, controls and monitoring to address energy and greenhouse gas considerations in relation to the stages of risk assessment assessment (Section 6.1) to reduce energy costs Avoids energy Avoids energy wastage • • wastage Uses renewable energy where • Uses renewable Residual risk assessment practical • Acceptance energy where (operational) criteria practical As for • precommissioning residual risk assessment Energy efficiency • analysis has been performed and energy use per kL water Select recovered (in lifecycle • Select appropriate pumps, • appropriate assessment) is low pipes and treatment methods pumps, pipes compared to options Use SCADA systems to • and treatment that also meet all other Preventive control operations to minimise methods criteria measures unnecessary use of vehicles Optimise selection of train-of- As for • • treatment processes for water Maximal and precommissioning quality, energy requirements precommissioning residual risk or and costs residual risk assessment Optimise recharge pressures assessment • and unclogging processes monitoring Monitoring Estimate or • of energy use, measure energy including the use proportion of renewable energy used Evaluate energy use • included in trials when testing operating • strategies; this may require additional P energy meters or monitoring surrogates during validation na = not applicable; SCADA = supervisory control and data acquisition.
Table 5.18 Criteria, controls and monitoring to address energy and greenhouse gas considerations in relation to the stages of risk assessment Acceptance criteria Preventive measures or assessment • Avoids energy wastage • Uses renewable energy where practical • Select appropriate pumps, pipes and treatment methods Maximal and precommissioning residual risk assessment • Avoids energy wastage • Uses renewable energy where practical • Select appropriate pumps, pipes and treatment methods • Use SCADA systems to control operations to minimise unnecessary use of vehicles • Optimise selection of train-of- treatment processes for water quality, energy requirements and costs • Optimise recharge pressures and unclogging processes (Section 6.1) to reduce energy costs Residual risk assessment (operational) • As for precommissioning residual risk assessment • Energy efficiency analysis has been performed and energy use per kL water recovered (in lifecycle assessment) is low compared to options that also meet all other criteria • As for precommissioning residual risk assessment Monitoring • Estimate or measure energy use • monitoring of energy use, including the proportion of renewable energy used • Evaluate energy use included in trials when testing operating strategies; this may require additional energy meters or monitoring surrogates during validation na = not applicable; SCADA = supervisory control and data acquisition. P