Public Health Regulation 2022
11Maintenance requirements
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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.