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Awareness of inherent dangers and risks associated with boiler operation and maintenance.
Criteria for assessing water tube condition, including bending and clearances.
Criteria for evaluating castable condition and when to repair or seek instructions.
Criteria for evaluating insulation condition and addressing separation issues.
Criteria for evaluating air diffuser condition and when to replace it.
Methods for detecting gas leakage using water immersion and pressure drop tests.
Actions to take when a gas leak is suspected but not collected by standard methods.
Criteria for no leakage of water or steam during operation or standby.
Not allowing exhaust leakage and checking for discoloration due to overheating.
Checking for leakage and performing a test of the safety valve operation.
Criteria for UV sensor self-discharge and discharge under UV light.
Criteria for evaluating the phototube's response to UV radiation.
Criteria for spark rod insulation resistance, wear, and heat-shrink tube integrity.
Checking gas spread plate, burner elements, and positional relationships.
Criteria for no water leakage and actions for detected leaks.
Checking shutoff valve operation and identifying leaks.
Identifying failed check valves by hot water discharge from vent valve.
Ensuring switches operate correctly and replacing if steam leaks occur.
Checking high and low-pressure cut settings and alarm functions.
Checking air-pressure switch settings and fault alarm functions.
Steps to confirm water level display, pump start/stop, and low-water alarm.
Measuring purge times and checking safety operations during misfiring and non-ignition.
Criteria for good boiler water based on transparency.
Table categorizing scale thickness (A, B, C) with associated actions.
Table categorizing corrosion levels (X, Y, Z) with descriptions.
Setting pilot hold and adjusting the pilot burner.
Steps for entering maintenance mode and setting burner adjust parameters.
Steps for adjusting pilot burner combustion on-site.
Setting to high fire, checking differential pressure, and O2%/CO% range.
Visualizing gas regulator adjustment for decreasing or increasing gas flow.
Confirming stable flame voltage in monitor mode.
Ensuring O2% and CO% are within the specified range.
Operating at high fire, measuring exhaust gas, and adjusting damper.
How to adjust the damper screw to increase or decrease O2%.
Measuring exhaust gas temperature under steady steam pressure.
Confirming exhaust temperature is within appropriate range and identifying causes for high/low temps.
Checking feed-water temperature against specifications and identifying causes for high/low temps.
Measuring scale monitoring temperature to indicate deposited scale.
Ensuring high limit temperature does not exceed setting data.
Measuring flame voltage as an indicator of combustion.
Verifying capacity against on-line data and checking temperature/conductivity.
Ensuring measured current does not exceed rated current and phases are similar.
Criteria for no corrosion on economizer coils and bottom plate.
Checking capacity, spray angle, and installation of the nozzle tip.
Permitting no oil leakage from solenoid valves or oil pipe joints.
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