CETP 4.1 Designing & Installing Exterior
Vapor Distribution Systems
_______ is most corrosive when it is high in moisture, electrical conductivity, acidity,
and dissolved salts. - correct answer-Soil
________ is flexible, durable, and covered with a plastic sheath. The sheath should
be protected as much as possible to prevent corrosion. - correct answer-CSST
(Corrugated Stainless Steel Tubing)
__________ are used to connect cylinders to an integral 2-stage regualator using a
pigtail. - correct answer-T-blocks
____________ can be joined using manufacturer prescribed procedures like heat
fusion, or mechanical fittings. - correct answer-Polyethylene (PE) pipe
_____________ is the sum of the rated btu/hr input for each propane appliance
connected to the vapor distribution system. - correct answer-Total gas demand
_____________ is used to determine the amount of propane required to operate
appliances at a reduced demand, and assumes full cycle happen typically, and don't
operate simultaneously. - correct answer-Effective system load
_________________ are the most common method used to join steel and wrought
iron pipes in residential/small commercial installs. - correct answer-Threaded fittings
, ___________________ are used with first stage, integral 2-stage, and high pressure
regulators. - correct answer-Pigtail connectors
______________________ are used to join PE pipes in most residental/commercial
installations. - correct answer-Mechanical fittings
Above ground tanks with less than 125g water capacity may be placed next to a
building and must be ___ ft away from any discharge. - correct answer-5
Additional cathodic testing is required by code, __ to __ months after intial testing. If
succesful, testing thereafter follows every __ months. - correct answer-12, 18, 36
All fixed piping systems that serve 1/2 psig appliance systems are required to use a
____________, an ______________, or ______________. - correct answer-2-stage
regulator system, integral 2 - stage regualtor, 2-psi regulator system
ASME tanks that are over _____ gallons water capacity or more cannot be
transported on a public roadway when filled with more than __ % it's water capacity,
except under certain circumstances. - correct answer-125, 5
Because PE pipe/tubing are non conductive and can't be found with pipe locating
devices, you must install a _________________. - correct answer-tracer wire/ tape
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