What is the correct procedure for locating a gas leak using a leak detection fluid?
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A
Apply the fluid to all joints and look for gas bubbles, then turn on the gas fully for a pressure test
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B
Pressurise the installation and apply the fluid to each joint and connection, observing for bubble formation that indicates a leak
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C
Turn off all appliances, then apply fluid while gas is flowing to check each joint
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D
Apply the fluid externally to the gas meter only