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NYC HIGH PRESSURE PLANT TENDER
EXAM- MECHANICAL, SAFETY, AND CODE
PRINCIPLES 2026
What should an operator investigate if the 'Lead' boiler in a lead-lag system trips
on 'Low Water'? - correct-answer - The water column and LWCO piping for
potential blockage
Which valve is most likely to experience 'Wire-drawing' if used incorrectly for
throttling service? - correct-answer - Globe Valve
What is the minimum number of safety valves required for a boiler with 850
square feet of heating surface? - correct-answer - Two safety valves
Which thermodynamic property remains constant during a throttling process? -
correct-answer - Enthalpy
NYC HIGH PRESSURE PLANT TENDER
EXAM- MECHANICAL, SAFETY, AND CODE
PRINCIPLES 2026
What should an operator investigate if the 'Lead' boiler in a lead-lag system trips
on 'Low Water'? - correct-answer - The water column and LWCO piping for
potential blockage
Which valve is most likely to experience 'Wire-drawing' if used incorrectly for
throttling service? - correct-answer - Globe Valve
What is the minimum number of safety valves required for a boiler with 850
square feet of heating surface? - correct-answer - Two safety valves
Which thermodynamic property remains constant during a throttling process? -
correct-answer - Enthalpy