u) A totalizing, vapor type meter should be provided
at the tank installation, at the vaporizer discharge, to record
fuel used at the facility. The fuel system should be sized by
adding the demand rates listed herein for each trainer to be
constructed. Flow meter should be a turbo meter with
temperature and pressure compensation. Provide meter with
digital interface connections.
(1) The propane will be delivered to the
individual structures by underground pipe with a single entry to
each structure. The propane piping at the site should be routed
in a closed loop so as to maintain a constant supply pressure.
Do not use galvanized steel pipe for underground installation.
Underground pipe and fittings should be carefully coated for
protection from corrosion and should be equipped with cathodic
(2) The propane entry should consist of the
apparatus and piping as shown in Appendix J, Figure J-2.
Install a totalizing consumption meter on the structure side of
the "house valve" to record the amount of propane used by that
building. The device contractor will tie into the propane entry
as shown in Appendix J, Figure J-2. Provide the propane entry
outside. A list of valves, fixtures, appurtenances, and
controls required for the propane system are shown in Appendix
J, Figures J-3 through J-7.
(a) Provide underground piping located under
roadways, parking areas, etc., in a vented protective conduit in
accordance with API 2510, Design and Construction of LP Gas
Installations at Marine and Pipeline Terminals, Natural Gas
Processing Plants, Refineries, Petrochemical Plants, and Tank
(b) Propane piping should be welded and
should be provided in accordance with ANSI B31.3, Chemical Plant
and Petroleum Refinery Piping, and should be Schedule 80. On
existing facilities, propane piping with threaded fittings
should be back-welded.