NCC 2022 Volume Three - Plumbing Code of Australia
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  • South Australia
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B5

Part B5 Cross-connection control

Part B5 Cross-connection control

Introduction to this Part

This Part sets out cross-connection hazards and corresponding Hazard Ratings.

Objectives

2019: BO5

Functional Statements

2019: BF5

Performance Requirements

2019: BP5.1

Verification Methods

New for 2022

Deemed-to-Satisfy Provisions

2019: B5.1
2019: B5.2
2019: B5.3
2019: B5.4
New for 2022
New for 2022

State variations

NCC Blurbs

Water systems permanently attached to cooling towers backflow prevention shall be positioned so that—

  1. cooling tower air gap must be measured from the rim of the cooling tower basin; and
  2. if a drinking water service to the cooling tower passes through the basin, the service pipe must be provided with a double wall protection; and
  3. if a fast fill connection is required, the fast fill line shall terminate externally to the unit, with an air gap over either the basin or a tundish.

Notes

See NSW Figure B5D7 for typical cooling tower connections.

Insert NSW figure (B5D7) as follows:
NSW Figure B5D7: Typical cooling tower service
image-B5D7-typical-cooling-tower-service-NSW.svg
Figure Notes

Note 1.

Refer to AS/NZS 3500.1 Part 1 Table 4.6.3.2

NCC Title

Cooling tower water service

NCC State
NSW
NCC Variation Type
Insertion
NCC SPTC Current
Cooling tower water service