Exam (elaborations)
Ontario Gas G1 Practice Exam Prep B149.3-10 – 24 Questions and Answers
Ontario Gas G1 Practice Exam Prep B149.3-10 – 24 Questions and Answers
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Ontario Gas G1 Practice Exam PrepB149.3-10 – 24 Questions and Answers
What is the first action 'to be taken when performing an ignition spark
response test? - -Close test firing valve and pilot valve
-A valve not considered 100% shutoff - -Butterfly valve
-The "Bleed" valve on a double block&bleed system is required on an
appliance firing over? - -10000000
-Where is the low pressure switch located on the valve train? - -After the
main gas regulator
-Where is the high pressure switch to be located on the valve train? - -After
the second "blocking" valve
-What provides the opening force on a diaphragm valve? - -Upstream gas
pressure
-What provides the opening force on a regulator? - -Spring tension
-A high gas pressure switch should be set to open at? - -25% above
operating pressure
-A low gas pressure switch should be set to open at? - -50% below
operating pressure
-A pre-purge is required on all burners employing? - -Electronic ignition
-What is the first thing you must do when using flame simulator on an
industrial gas burner? - -Close test firing valve
-A programming flame safeguard control is a control that? - -Incorporates
timing mechanist sequence burner start-up
-The maximum flame failure response time allowed on a gas appliance firing
2000000 - -4 seconds
-A combustion air-proving switch is an example of? - -A running interlock
-The minimum required pre-purge on an industrial gas-fired appliance? - -4x
the volume of the combustion zone&flue passages
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