About: Testing and inspection of diving cylinders

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Transportable pressure vessels for high-pressure gases are routinely inspected and tested as part of the manufacturing process. They are generally marked as evidence of passing the tests, either individually or as part of a batch (some tests are destructive), and certified as meeting the standard of manufacture by the authorised testing agency, making them legal for import and sale. When a cylinder is manufactured, its specification, including manufacturer, working pressure, test pressure, date of manufacture, capacity and weight are stamped on the cylinder.

Attributes	Values
rdf:type	Thing
rdfs:label	Testing and inspection of diving cylinders (en)
rdfs:comment	Transportable pressure vessels for high-pressure gases are routinely inspected and tested as part of the manufacturing process. They are generally marked as evidence of passing the tests, either individually or as part of a batch (some tests are destructive), and certified as meeting the standard of manufacture by the authorised testing agency, making them legal for import and sale. When a cylinder is manufactured, its specification, including manufacturer, working pressure, test pressure, date of manufacture, capacity and weight are stamped on the cylinder. (en)
rdfs:seeAlso	Diving cylinder
foaf:depiction
dcterms:subject	Breathing gases Underwater breathing apparatus Pressure vessels
Wikipage page ID	52180843 (xsd:integer)
Wikipage revision ID	1119487633 (xsd:integer)
Link from a Wikipage to another Wikipage	Department of Employment and Labour Breathing gases United States Sustained load cracking Germany Visual inspection Australia 6061 aluminium alloy Underwater breathing apparatus European Committee for Standardization Auroville Norway Tap and die Punch (tool) Pressure vessels Tumble finishing Diving cylinder Union of South Africa South African National Accreditation System Ultrasonic testing Steam cleaning Shot-blasting dbr:Chemical_cleaning dbr:Flailing dbr:Water_jet_cleaning
Link from a Wikipage to an external page	https://law.resource.org/pub/us/cfr/ibr/004/iso.6406.2005.pdf https://archive.org/details/gov.law.iso.10461.2005
sameAs	Testing and inspection of diving cylinders Testing and inspection of diving cylinders
dbp:wikiPageUsesTemplate	dbt:Cite_web dbt:Cn dbt:Refbegin dbt:Refend dbt:Reflist dbt:Rp dbt:See_also dbt:Sfn dbt:Short_description dbt:Underwater_diving dbt:SfnRef
thumbnail	wiki-commons:Special:FilePath/Water_jacket_test_diagram.jpg?width=300
group	note (en)
has abstract	Transportable pressure vessels for high-pressure gases are routinely inspected and tested as part of the manufacturing process. They are generally marked as evidence of passing the tests, either individually or as part of a batch (some tests are destructive), and certified as meeting the standard of manufacture by the authorised testing agency, making them legal for import and sale. When a cylinder is manufactured, its specification, including manufacturer, working pressure, test pressure, date of manufacture, capacity and weight are stamped on the cylinder. Most countries require diving cylinders to be checked on a regular basis. This usually consists of an internal visual inspection and a hydrostatic test. The inspection and testing requirements for scuba cylinders may be very different from the requirements for other compressed gas containers due to the more corrosive environment in which they are used. After a cylinder passes the test, the test date, (or the test expiry date in some countries such as Germany), is punched into the shoulder of the cylinder for easy verification at fill time. The international standard for the stamp format is ISO 13769, Gas cylinders - Stamp marking. A hydrostatic test involves pressurising the cylinder to its test pressure (usually 5/3 or 3/2 of the working pressure) and measuring its volume before and after the test. A permanent increase in volume above the tolerated level means the cylinder fails the test and must be permanently removed from service. An inspection may include external and internal inspection for damage, corrosion, and correct colour and markings. The failure criteria vary according to the published standards of the relevant authority, but may include inspection for bulges, overheating, dents, gouges, electrical arc scars, pitting, line corrosion, general corrosion, cracks, thread damage, defacing of permanent markings, and colour coding. Gas filling operators may be required to check the cylinder markings and perform an external visual inspection before filling the cylinder and may refuse to fill non-standard or out-of-test cylinders. (en)
prov:wasDerivedFrom	wikipedia-en:Testing_and_inspection_of_diving_cylinders?oldid=1119487633&ns=0
page length (characters) of wiki page	22629 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Testing_and_inspection_of_diving_cylinders
is Link from a Wikipage to another Wikipage of	Diving cylinder
is foaf:primaryTopic of	wikipedia-en:Testing_and_inspection_of_diving_cylinders

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