Field inspection manual—volumetric measuring devices

Part 5—Standard installation drawings

Standard installation drawings approved by Measurement Canada (MC) for liquid measuring devices.

In response to the Downstream Petroleum Trade Sector review, Measurement Canada is publishing standard Installation drawings. The standard installation drawings indicate the major metrological components of typical volumetric metering systems and the associated MC regulatory requirements. These drawings will assist service agencies and petroleum companies to better understand the MC installations requirements for volumetric measuring devices.

Standard installation drawing list:

Truck mounted meter-pump supplied — drawing 1

Standard plumbing and installation drawing detailing the major metrological components of a truck mounted and pump supplied metering system.  In a typical truck mounted and pump supplied metering system, the truck's storage compartments are connected to a manifold, a pump, an air eliminator, a strainer, a meter and register with a printer, optional temperature sensor and test thermal well, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), a hose reel and quick pump-off outlet with delivery hose or hoses equipped with anti drain valves and vacuum breakers (where required) at their transfer point.  Where there are more than one delivery outlets there is a two-way, three port, valve so that only one delivery outlet may be operated at a time.  If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Liquified gas meter-rack mounted — drawing 2

Standard plumbing and installation drawing showing the major metrological components of a rack mounted liquified gas metering system.  In a typical rack mounted liquified gas metering system, the storage tank supply line is connected to a flow control valve (on/off), a pump, an air eliminator or condensing tank, a strainer, a pressure gauge, a temperature sensor and test thermal well, a meter and register with a printer, a differential back-pressure valve, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), and delivery hose and nozzle equipped with anti drain valve at the transfer point (delivery outlet).  The air eliminator's outlet and differential back-pressure valve are connected by piping to the vapour space of the storage tank or alternatively sense the vapour pressure from a sensing bomb contained in the condensing tank, if so equipped. If there are any deviations to a typical installation, the volumetric specialist should be contacted.

LPG truck mounted meter — drawing 3

Standard plumbing and installation drawing showing the major metrological components of a truck mounted liquified petroleum gas metering system.  In a typical truck mounted liquified petroleum gas metering system, the storage tank supply line is connected to a pump, an air eliminator, a strainer, a temperature sensor and test thermal well, a meter and register with a printer, a differential back-pressure valve, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), and delivery hose and nozzle equipped with anti drain valve at the delivery outlet.  The air eliminator's outlet and differential back-pressure valve are connected by piping to the vapour space of the truck's storage tank, to sense the vapour pressure.  The piping going to vapour space of the tank must have either a manual or automatic solenoid valve installed in the line.  If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Top loading rack meter with air elimination — drawing 4

Standard plumbing and installation drawing showing the major metrological components of a top loading rack mounted metering system with air elimination. In a typical top loading rack mounted metering system with air elimination, the storage tank supply line is connected to a pump, an air eliminator (air outlet open to atmosphere), a check valve, a strainer, the meter and register with a printer, a temperature sensor and test thermal well, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), and top loading arm with a loading valve and anti-drain mechanism with a vacuum breaker which establishes a transfer point at the beginning and end of a delivery. In a top loading installation the loading platform is elevated to a level above the top of the mobile tanks being loaded. As such, the meter register is also elevated to the loading platform in view of the operator. If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Bottom loading rack meter with air elimination — drawing 5

Standard plumbing and installation drawing showing the major metrological components of a bottom loading rack mounted metering system with air elimination. In a typical bottom loading rack mounted metering system with air elimination, the storage tank supply line is connected to a pump, an air eliminator (air outlet open to atmosphere), a check valve, a strainer, the meter and register with a printer, a temperature sensor and test thermal well, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), and a bottom loading arm with a loading valve and anti-drain mechanism. If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Top and bottom loading rack meter with air elimination — drawing 6

Standard plumbing and installation drawing showing the major metrological components of a top and bottom loading rack mounted metering system with air elimination.  In a typical top and bottom loading rack mounted metering system with air elimination, the storage tank supply line is connected to a pump, an air eliminator (air outlet open to atmosphere), a check valve, a strainer, the meter and register with a printer, a temperature sensor and test thermal well, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), and a top loading arm and bottom loading arm with loading valves and anti-drain mechanisms with a vacuum breaker in the top loading arm to establish the transfer point at the beginning and end of a delivery.  Where the delivery outlets divide to either top or bottom loading, there must be a 2-way, three port, valve so that only one delivery outlet may be operated at a time. On the top loading platform is a remote meter register in view of the operator. If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Top and bottom loading rack meter with no air elimination — drawing 7

Standard plumbing and installation drawing showing the major metrological components of a top and bottom loading rack mounted metering system with no air elimination.  In a typical top and bottom loading rack mounted metering system with no air elimination, the storage tank is equipped with a level sensor and the supply line is connected to a pump, a check valve, a strainer, the meter and register with a printer, a temperature sensor and test thermal well, a flow control valve (quick acting for mechanical registering systems and automatic for electronic registers), and a top loading arm and bottom loading arm with loading valves and anti-drain mechanisms and a vacuum breaker in the top loading arm to establish the transfer point at the beginning and end of a delivery.  Where the delivery outlets divide to either top or bottom loading, there must be a 2-way, three port, valve so that only one delivery outlet may be operated at a time. On the top loading platform is a remote meter register in view of the operator. If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Aircraft fuelling — truck mounted — drawing 8

Standard plumbing and installation drawing showing the major metrological components of a truck mounted aircraft fuelling system.  In a typical truck mounted aircraft fuelling system, the trucks storage compartments are connected to a manifold, a pump, an air eliminator (air outlet open to atmosphere or plumbed to vapour space in the storage tank ), a strainer, a meter and register with a printer, a temperature sensor and test thermal well, an automatic flow control valve, hose reels and delivery hoses equipped with couplers to attache to the aircraft fuel tanks.  Where there are more than one delivery outlets, a 2-way, three port, valve may be installed so that only one delivery outlet will be operated at a time.  Aircraft fuelling systems are exempt from requiring only one delivery outlet operating at a time as it may be necessary to fuel underwing tanks simultaneously. If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Aircraft fuelling and defuelling — truck mounted using two hoses — drawing 9

Standard plumbing and installation drawing showing the major metrological components of a truck mounted aircraft fuelling and defuelling system using two hoses.  In a typical truck mounted aircraft fuelling and defuelling system using two hoses (one for fuelling and one for defuelling), the truck's storage compartment supply piping, for fuelling, has a on/off flow control valve (closed for defuelling) and the storage tank has provisions for coupling the fuelling hose when used in the defuelling mode. Downstream of the on/off flow control valve is a pump, an air eliminator (air outlet piped to vapour space in the storage compartment), a check valve, a strainer, a meter and register with a printer, a temperature sensor and test thermal well, an automatic flow control valve, hose reel, and fuelling hose equipped with a coupler to attach to the aircraft fuel tank (fuelling) or the truck's storage compartment(defuelling). Upstream of the pump is the defuelling line which has an on/off flow control valve (closed in fuelling mode), a flow detector to stop the pump if air is detected, another hose reel with defuelling hose and aircraft coupler to attach to the aircraft fuel tank for defuelling an aircraft.  If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Aircraft fuelling and defuelling — truck mounted using a hydrant — drawing 10

Standard plumbing and installation drawing showing the major metrological components of a truck mounted aircraft fuelling and defuelling system using a hydrant.  In a typical truck mounted aircraft fuelling and defuelling system using a hydrant, the truck is equipped with three hose reels, hoses and couplers; one for attaching to a stationary fuel hydrant supply, one for fuelling and the other for defuelling aircraft. The main fuelling line, downstream of the hydrant hose reel, is a on/off flow control valve (closed during defuelling), a pump, an air eliminator (open to atmosphere), a check valve, a strainer, a meter and register with a printer, a temperature sensor and test thermal well, an automatic flow control valve, hose reel, and fuelling hose equipped with a coupler to attach to the aircraft fuel tank (fuelling) or the fuel return hydrant during defuelling.  Upstream of the pump is the defuelling line which has an on/off flow control valve (closed in fuelling mode),  a flow detector to stop the pump if air is detected, a hose reel with defuelling hose and aircraft coupler to attach to the aircraft fuel tank for defuelling.  If there are any deviations to a typical installation, the volumetric specialist should be contacted.

Aircraft fuelling — truck mounted with educator for line defuelling — drawing 11

Standard plumbing and installation drawing showing the major metrological components of a truck mounted aircraft fuelling system with a eductor for defuelling. In a typical truck mounted aircraft fuelling system which incorporates an eductor for defuelling, downstream of the storage compartment supply piping, is an on/off flow control valve, a pump, a filter, a two way four port flow diverting valve with an eductor, an air eliminator (air outlet plumbed with a check valve in line to vapour space in the storage compartment), a check valve, a strainer, a meter and register with a printer, a temperature sensor and test thermal well, an automatic flow control valve, hose reel, and hose equipped with a coupler to attach to the aircraft fuel tank. If there are any deviations to a typical installation, the volumetric specialist should be contacted.  It is noted that the use of an eductor to defuel aircraft must not be used, in Canada, for trade purposes.

Ship mounted meters — drawing 12

Standard plumbing and installation drawing showing the major metrological components of a ship mounted metering system. In typical ship mounted metering systems, the various number of ship's storage tanks are interconnected by piping and solenoid vales on both the inlet load piping and delivery piping to enable products to be diverted in and out of any one or multiple compartments, simultaneous. There can be many offload metering systems on one ship.  The major metrological components of a ship mounted metering system, downstream of the storage tanks are an on/off control valve, a hydraulic driven pump, an air eliminator, a strainer, a meter and register, and an automatic flow control valve.  If there are any deviations to a typical installation, the volumetric specialist should be contacted.

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