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Annual Combustion Internal Audit - Caustic Burner (Pinkenba)

This procedure outlines the steps for conducting an annual internal audit of the Caustic Burner at Pinkenba. It includes checks on the control panel, tank protection, burner operations, air fans maintenance, and combustion safety checks.
Pinkenba QLD - Valmont Coatings APAC
07/04/2025

Annual Combustion Internal Audit - Caustic Burner (Pinkenba)

This procedure outlines the steps for conducting an annual internal audit of the Caustic Burner at Pinkenba. It includes checks on the control panel, tank protection, burner operations, air fans maintenance, and combustion safety checks.

    Caustic Burner Control

    Does the control panel have a lockable door in working order?

    • Yes
    • No
    • N / A

    Can unauthorised personnel access the Caustic Burner controls?

    • Yes
    • No
    • N / A

    Can unauthorised or unqualified personnel access inside of the electrical panel?

    • Yes
    • No
    • N / A

    Are there sufficient exit paths to enable a person to leave the vicinity of the switchboard under emergency conditions?

    • Yes
    • No
    • N / A

    Is the lighting in the control panel sufficient for electrical works, without the need for a torch?

    • Yes
    • No
    • N / A

    Are electrical schematics (line diagrams) available in the control room?

    • Yes
    • No
    • N / A

    Are air/gas schematics (P&ID diagrams) available in the control room?

    • Yes
    • No
    • N / A

    Are all control system set points (e.g. Variable Speed Drive settings) available in the control room?

    • Yes
    • No
    • N / A

    Are all schematics free from handwritten markup and additions?

    • Yes
    • No
    • N / A

    Are all schematics the current revision? (Refer electronic register)

    • Yes
    • No
    • N / A

    Is there evidence of uncontrolled recording of set points and variables? (e.g. not in the electrical schematics or workbook)

    • Yes
    • No
    • N / A

    Do all indicator lamps function? Note alarm conditions may be needed to test all lamps.

    • Yes
    • No
    • N / A

    Do all panel displays function correctly including flame sensing ammeter readings and temperature controllers?

    • Yes
    • No
    • N / A

    Do alarms audibly sound when triggered?

    • Yes
    • No
    • N / A

    Do Caustic Burner failures trigger remote message and/or a call system?

    • Yes
    • No
    • N / A

    Are all isolators clearly labelled?

    • Yes
    • No
    • N / A

    Is thermocouple wiring fully enclosed in a sheath from the Caustic Burner to outside the area of potential zinc splash?

    • Yes
    • No
    • N / A

    Is the thermocouple wiring to the correct specification - fibreglass coated wiring and round pin plugs (not flat blade)?

    • Yes
    • No
    • N / A

    Is there an overtemperature temperature controller?

    • Yes
    • No
    • N / A

    Is the overtemperature temperature controller connected to its own independent thermocouple?

    • Yes
    • No
    • N / A

    Is the overtemperature temperature reading and the controlling temperature reading within 2°C?

    • Yes
    • No
    • N / A

    Caustic Tank Protection

    For a poly tank, or poly lined tank - are group standard heat shields installed between the burner and the wall to a depth of 1m?

    • Yes
    • No
    • N / A

    For a poly tank, or poly lined tank - are the heat shields in good condition with steel and fibre blanket wrap?

    • Yes
    • No
    • N / A

    For a poly tank, or poly lined tank - is a level sensor installed to shut off the burner in the event that the liquid level drops?

    • Yes
    • No
    • N / A

    Does the level sensor shut off the burner when triggered? (remove the level sensor from the tank to trigger it)

    • Yes
    • No
    • N / A

    Caustic Burner

    Is the main gas isolating valve painted yellow and easily accessible in an emergency? (e.g. not blocked in or keyed access)

    • Yes
    • No
    • N / A

    Is there appropriate signage marked "Gas Isolation Valve" which can be read from a distance of at least 10m?

    • Yes
    • No
    • N / A

    Is the gas isolation valve on the HS-01 isolation register, with the appropriate labelling?

    • Yes
    • No
    • N / A

    Do site personnel know where the main gas isolation valve is?

    • Yes
    • No
    • N / A

    Check all gas valves to ensure they are not seized closed or open. Are all gas valves free to move? (note: no need to fully shut off)

    • Yes
    • No
    • N / A

    Has all gas pipework been inspected in the last 24 months? (Frequency TBC)

    • Yes
    • No
    • N / A

    Is gas pipework in good condition, including coatings in good condition, no pitting or corrosion?

    • Yes
    • No
    • N / A

    Caustic Burner Control Operations

    Trigger Caustic Burner to engage high and low fire by changing the set point. Do all air control motors, solenoids, or Variable Speed Drive's actuate/control as required.

    • Yes
    • No
    • N / A

    Turn off the Caustic Burner completely and start it. Do all burners light first time and reliably?

    • Yes
    • No
    • N / A

    Turn off the Caustic Burner completely and start it. Does the purge time match the required time marked on the Caustic Burner certification plate and/or drawings? (10min if not labelled)

    • Yes
    • No
    • N / A

    Does the gas meter operate?

    • Yes
    • No
    • N / A

    If the gas meter is connected to a recording device, is this fully functional?

    • Yes
    • No
    • N / A

    If the gas meter is connected to a recording device, is the gas usage at the expected rates for high and low fire?

    • Yes
    • No
    • N / A

    Combustion Air Fans Maintenance

    Is there a preventative maintenance program for the combustion air fans?, including greasing, vibration analysis, and filter replacements.

    • Yes
    • No
    • N / A

    Does the preventative maintenance program for the combustion air fans include all of: greasing, filter replacements, vibration analysis, bearing temperature measurement.

    • Yes
    • No
    • N / A

    Does the condition of the combustion air fans suggest that the preventative maintenance system is being followed correctly? (quiet, clean filters, not running hot)

    • Yes
    • No
    • N / A

    Is there a spare combustion air blower ready to be operational in the event of a failure of the main unit?

    • Yes
    • No
    • N / A

    Are there any immediate concerns with the combustion air fans (noisy, dirty, unbalanced fan, excessive heat)?

    • Yes
    • No
    • N / A

    Combustion Maintenance and Safety Checks

    Has the combustion workbook been filled out for all known combustion contractor works, including services and breakdowns?

    • Yes
    • No
    • N / A

    Has the combustion tuning and servicing been completed to the appropriate standard (flue gas analysis, air/gas pressures, safety checks, condition report, adjustments)

    • Yes
    • No
    • N / A

    Has the combustion tuning and servicing been completed on time at minimum 6 monthly intervals?

    • Yes
    • No
    • N / A

    Have required safety checks to the local regulations been completed at minimum 12 monthly intervals? Testing to AS3814 required for AU, and recommended for all sites.

    • Yes
    • No
    • N / A

    Are the most recent flue gas analysis records for the Caustic Burner consistent with previous records?

    • Yes
    • No
    • N / A

    Date of Audit

    Signature of Auditor

    Click here to sign
Source: Pinkenba QLD - Valmont Coatings APAC (Community Member)

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