Chilled & Hot Water Circuits

    • Are typically found in production plants & comfort cooling operations.
    • Are generally built into structures and the level of access is limited.
    • Have high repair costs due to their location and potential for disruption of services.
    • Risk extensive damage due to failure of piping if not maintained & monitored.
    • Operate with a low water loss (<10%annum on system volume).

    • To support sound mechanical design.
    • To inhibit corrosion on the various metals that are represent.
    • Control bacterial activity that can create environment with MIC.
    • To prevent deposition of hardness salts and corrosion products.
    • For existing systems, program should help to move deposits to allow the inhibitors to reach the system metal.

    • Ferrous alloy inhibitors designed to protect mild steel.
    • Yellow metal inhibitors designed to protect copper and alloys.
    • Buffering Agents to control system pH.
    • Dispersants to disperse solids.

    Well managed systems operate for very long periods without issue, if water losses occur & are unnoticed, severe corrosion & fouling can occur. Recommend, water meters with pulse output to control level of inhibitor present in circuit.

  • Once system has been lost, corrective action is required. Online cleaning is recommended to ensure circuit is back to being protected. Initial option is flush & clean, however loss of anti freeze & costs in downtime & cleaning can be cost prohibitive. There fore an online clean is an alternative.

    • Relies on corrected treatment to slowly remove corrosion or scale and capture them by filtration of the circuit.
    • With surfactant/polymer to remove organic deposits and capture them by filtration of the circuit.
    • Using elevated levels of phosphonate & polymer to remove corrosion product.

    Well managed systems operate for very long periods without issue, if water losses occur & are unnoticed, severe corrosion & fouling can occur.