| 0-9 | A | B | C | D | E| F | G |
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Q | R |
S | T | U | V |
W | X | Y | Z |
| Term |
Definition |
|
|
| 0 or Ph |
Phase. Applied to electrical
power supply |
|
|
| AAR |
American Association of Railroads |
| ACC |
ACCEPTABLE CONTAINER CONDITION |
| Approval Agency/Inspection Authority |
Organization approved by a
competent authority to inspect and certify equipment |
| ASME |
American Society of Mechanical
Engineers. Publisher of internationally recognized codes for
pressure vessels. |
| ATP |
Agreement on the International
Carriage of Perishable Foodstuffs and on the special equipment
to be used for such carriage. |
|
|
| Ball Valve |
A valve which is closed by
rotating a ball with a central hole through 90 degrees |
| BAM |
Bundesanstatl Fur Materialforschung
und Prufung. |
| Bar |
Unit of pressure. (International
Bar = 100 Kilopascal = 14.5 psi) |
| BS |
British Standards. UK standards
organization |
| BS Table D |
Specification for bolted flanges
for pressure applications. |
| BSP |
British Standards Pipe Thread.
A thread form common on pipe fittings. |
| BSW |
British Standard Whitworth.
A screw thread commonly used on clamp bolts. Sometimes interchangeable
with ISO metric coarse threads. |
| Bursting Disc |
A pressure-relief device which
breaks at a pre-determined pressure. Used for emergency relief
or as a hermetic seal for relief valves to prevent the release
of toxic or especially hazardous vapors. |
| Butterfly Valve |
A valve containing a circular
plate which rotates through 90 degrees to close the opening. Easy
to clean but restricts the fluid flow slightly. |
|
|
| Camlock |
A quick-release type coupling
sometimes used on bottom-outlet systems. |
| CCC |
Customs Convention on Containers. Allows
temporary admission of tanks into member countries. |
| CFM |
Cubic Feet per Minute. Imperial
measurement of rate flow. Usually applied to airflow |
| CFR |
Code of Federal Regulations |
| Closed Cup (CC) |
Describes a method used to
ascertain the flash point of a liquid. |
| Competent authority |
Regulating authority for national
government. |
| CSC |
International Convention for
Safe Containers |
|
| Design pressure |
The pressure used to calculate
the thickness of the shell of the tank. Design codes require
the design pressure to equal or exceed the maximum allowable
working pressure or equal or exceed the test pressure depending
on which code is applicable. |
| Dipstick (dip rod) |
Calibrated stainless steel
bar situated in the manhole at the volumetric center to measure
the level to which the tank has been filled. |
| DNV |
Det Norske Veritas (a Norwegian
approval society) |
| DOT US |
Department of Transport. Competent
authority for the United States of America. |
|
|
| EIR/RE |
Equipment Interchange Report/Repair
Estimate |
|
|
| Filling ratio |
Maximum permissible mass of
cargo as a percentage of the capacity. |
| Flame Trap |
A metal gauze which permits
gases to pass through but does not permit flame to pass (flashback) |
| Foot valve |
Internal bottom-outlet valve
situated in the knuckle of the dished end. Also know as emergency
valve. Specified for hazardous products. |
|
|
| GRP (FRP) |
Glass-reinforced plastic (fibre-reinforced
polyester) resin sheet with a glass-fibre used to encase insulation. |
|
|
| IMO |
International Maritime Organization |
| |
|
| In Hg |
Inches of Mercury. Unit of
measurement for low pressures (usually vacuum). |
| ISO |
International Standards Organization. An
advisory body, whose recommendations have been accepted and incorporated
into the official technical standards of many countries in the
area of the transportable container, the aim of the organization
is to achieve a standard approach to cargo container design and
handling. |
| ISO 9002 |
An internationally recognized
quality system intended to satisfy a user's needs or requirements. |
|
| Kg/cm2 |
Kilograms per square centimeter.
(Unit of pressure) |
| K Pa (KN/M2) |
Kilopascal (Unit of pressure) |
|
|
| MARPOL |
International convention for
the prevention of pollution from ships. |
| MAWP |
Maximum allowable working
pressure |
| MGW |
Maximum Gross Weight = TARE
+ MAXIMUM PAYLOAD |
| MSDS |
Material Safety Data Sheet.
This identifies the physical properties and hazards of product. |
|
| NPT |
National Pipe Thread. The
thread form for pipe fittings used in the USA |
|
|
| Passivation |
A process which encourages
the corrosion resistance of stainless steel by the forming of
chrome oxide layer on the steel surface. |
| Payload |
Mass of cargo that can be
carried |
| PCD |
Pitch Circle Diameter. Diameter
of circle upon which bolt holes are positioned. |
| Pickling |
A chemical or electrochemical
method of removing mill scale, rust, metal oxides and similar
coatings from steel. |
| Plate valve |
A valve consisting of a plug
which is moved in and out of its seating by an operated mechanism. Most
foot valves and some top-outlet valves are plate valves. |
| PSI (Ib/in2) |
Pound per square inch (unit
of pressure) |
| PTFE |
Polytetrafluorethylene. A
plastic used for seals and bearings. Has a wide temperature tolerance
and is resistant to most chemicals. |
| P/V Valve |
A
combined pressure and vacuum-relief valve to protect the tank
against excessive overpressure and vacuum. |
| PR Valve |
A pressure relief valve to
protect the tank against accidental overpressure. As the P/V
valve (above) but without the vacuum relief facility. |
|
| Reference Temperature |
A
temperature allocated to particular zones throughout the world. |
|
| SNCF |
Societe Nationale de Chmin
de Fer Francais. French Railways competent authority. |
| Steam trap |
Valve which permits only water
to pass |
| SWG |
Standard Wire Gauge. Standards
for metal sheet and wire thickness. |
| Syphon tube (dip tube) |
A tube from the top outlet
to the bottom of the tank which allows liquid to be discharged
or loaded through the top outlet/inlet by means of pressure (or
suction) |
|
| Tare |
Mass of an empty tank in operational
condition |
| Thermostat |
A temperature sensor operating
an electrical switch. Used to maintain a temperature within set
limits. |
| TIR |
International agreement to
standardize the Customs sealing of road vehicles crossing international
boundaries. This agreement does not apply to containers which
must be approved under the Customs Convention on Containers. The
term TIR however is still commonly used to denote the approved
sealing on a container. (See International Transport of Goods
Under Customs Seal. Conditions of Approval Publication VE 505
Published by DOT UK) |
| Total containment pressure |
The sum of the internal pressures
to which a tank container is subjected in normal service. This
total pressure must not exceed the maximum allowable working
pressure of the tank. |
|
| UIC |
Union International des Chemin
de Fer. Publisher of regulations for tank container marking
and registration for international rail transport. |
| Ullage (Outage) |
Free space within vessel after
loading. |
| UN Number |
A numbering system recommended
by the United Nations Committee of Experts on the Transport of
Dangerous Goods for the aim of worldwide harmonization in this
field. |
|
| Vapor pressure |
The developed pressure within
a closed vessel containing a liquid. Each liquid has its own
vapor pressure which varies with temperature |
| Viton A |
A synthetic rubber used for
seals. Has good sealing properties and is tolerant of a wide
range of chemical. |
| |
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