Installation Techniques Flashcards

When installing an underground gas service line, what is the minimum depth requirement for burial in BGE territory?

Answer: 24 inches

Underground gas service lines must be buried at a minimum depth of 24 inches to protect against damage from surface activities.

Which type of pipe joint is NOT acceptable for use in natural gas distribution systems?

Answer: Soldered or brazed joints

Soldered or brazed joints are not acceptable for gas piping because they lack sufficient strength and leak resistance for gas distribution pressures.

When installing a gas meter at a residential property, what clearance must be maintained from an electrical meter?

Answer: 3 feet

Gas meters must be installed at least 3 feet from electrical meters to reduce ignition risk in the event of a gas leak.

What is the correct procedure when installing a new gas appliance connector?

Answer: Always install a new listed connector and never reuse old connectors

Gas appliance connectors must always be replaced with new listed connectors during appliance installation; reusing old connectors is prohibited.

Which material is approved for use as above-ground gas piping inside a residential structure?

Answer: CSST (Corrugated Stainless Steel Tubing)

CSST is an approved material for above-ground interior gas piping and is flexible enough for use in residential installations.

When backfilling a trench containing a new gas service line, what must be done first?

Answer: Pressure test and inspect the line before backfilling

A pressure test and inspection must be completed and passed before any trench containing gas piping is backfilled.

What is the purpose of installing a drip leg (sediment trap) on a gas appliance supply line?

Answer: To collect moisture and debris before they enter the appliance

A drip leg collects condensation and pipe debris before they can enter and damage appliance controls or burners.