ISO 3807 pdf download

ISO 3807 pdf download Gas cylinders — Acetylene cylinders — Basic requirements and type testing
Scope
This International Standard specifies the basic and type testing requirements for acetylene cylinders withand without fusible plugs with a maximum nominal water capacity of 150 1 and requirements regardingproduction/batch test procedures for manufacturing of acetylene cylinders with porous material.
lt does not include details of the design of the cylinder shell; these are specified, for example, inIS09809-1,1S0 9809-3,IS04706andIS0 7866
NOTEThe limitation to 150 lis derived from the definition for cylinder in the UN Model Regulations. However,in practice acetylene cylinders in general have lower water capacities than 150 l.
2 Normative references
The following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument(including anyamendments)applies.
ISO 10297, Gas cylinders – Cylinder valves – Specification and type testing
3 Terms and definitions
For the purposes ofthis document, the following terms and definitions apply.31acetylene cylinder
cylinder, manufactured and suitable for the transport ofacetylene, containing a porous material (3.6) anasolvent (3.9) (where applicable) for acetylene with a valve and other accessories affixed to the cylinder
Note 1 to entry: For solvent-free acetylene cylinders, see Clause 7.
Note 2 to entry: When there is no risk ofambiguity, the word “cylinder”is used.
3.2
cylinder shell empty cylinder, manufactured and suitable for receiving and containing a porousmaterial 3.6) for use as part of an acetylene cylinder (3.1)
3.3
fusible plug
non-reclosing pressure relief device designed to function by the yielding or melting ofa plug offusiblematerial at a predetermined temperature
3.4
manufacturer
company responsible for filling the cylinder shell (3.2) with porous material (3.6and which generally prepares it for the first charge of acetylene
3.5
maximum acetylene content specified maximum weightofacetylene including saturation acetylene (3.8)in anacetylene cylinder (3.1]
Note 1 to entry: When using tareS, the maximum acetylene charge may be used. The maximum acetylene chargeis the maximum acetylene content minus the saturation acetylene.
36
porous material
single or multiple component material introduced to or formed in the cylindershell (3.2), that, due its porosity, allows the absorption ofa solvent/acetylene solution
Note 1 to entry: The porous material can be either monolithic, consisting ofa solid product typically obtained byreacting materials or by materials connected together with a binder, or non-monolithic, consisting ofgranularfibrousorsimilar materials without addition ofa binder
3.7
porosity
ratio of the total volume lwater capacity 3.13) of the cvlinder shell 13.2) minusthe volume of the solid fraction (portion) of the porous material (3.6), to the water capacity (3.13) of thecylinder shell (3.2)
Note 1 to entry: For the determination ofthe porosity see Annex A or Annex l
3.8
saturation acetyleneacetylene dissolvedinthesolvent(3.9)intheacetylenecylinder(3.1)atatmosphericpressure (1,013 bar) and at a temperature of 15 C
3.9
solvent
liquid that is absorbed by the porous material (3.6) and is capable of dissolvingand releasing acetylene
Note 1 to entry: The following abbreviations are used: “A” for acetone and “DMF” for dimethylformamide.