11Maintenance requirements

#### 11 Maintenance requirements 11 Maintenance requirements > > (1) This section prescribes the maintenance requirements for cooling water systems for the Act, section 30. > > > (2) A cooling water system must be maintained in accordance with AS/NZS 3666.3:2011, including the control strategies set out in Table 3.1 for *Legionella* and Table 3.2 for heterotrophic micro-organisms. > > > (3) A risk assessment for a cooling water system required under AS/NZS 3666.3:2011 must be— > > > > > (a) conducted in accordance with section 12, and > > > > > (b) documented and reported in accordance with section 13, and > > > > > (c) audited in accordance with section 14. > > > (4) Sampling, testing and inspection of a cooling water system must be conducted in accordance with section 17. > > > (5) Despite subsection (2), a cooling water system at a thermal power station is not required to be maintained in accordance with AS/NZS 3666.3:2011, clauses 3.2 and 3.3. > > > (6) Instead, a cooling water system at a thermal power station must be maintained in accordance with the Thermal Power Station Main Water Cooling Systems—Trigger Action Response Protocols, published by the Ministry of Health.