BS EN 16728:2016 pdf free.LPGequipment and accessories— Transportable refillable LPGcylinders other than traditionalwelded and brazed steel cylinders — Periodic inspection.
BS EN 16728 tare mass: sum of the mass of the empty cylinder, the mass of the valve including a dip tube where fitted, and themass of all other parts that are permanently attached to the cylinder when it is being filled, e.g. fixedvalve guard.
The interval between periodic inspections shall be dependent on the content of a written scheme.
Periodic inspections/tests shall be carried out by a competent person under the control of an inspectionbody based on a written scheme and in accordance with the procedures specified in Table 1.
NOTE1 A written scheme describes work procedures,criteria，responsibilities and other minimumrequirements.
NOTE2 With the agreement of the competent authority an alternative to the proof pressure test of cylinders isacoustic emission testing, ultrasonic examination or a combination of both.EN IS0 16148[4] can be used as aguide for acoustic emission testing procedures.
NOTE 3 Tests can be performed in any order as determined by the written scheme.4.2 Steel and aluminium cylinders
The maximum interval between periodic inspections for welded steel cylinders in conformance withEN 14140 or an equivalent standard and,welded aluminium LPG cylinders in conformance withEN 13110, or equivalent standard, shall be 10 years.
However for welded LPG steel cylinders in conformance with EN 14140 manufactured before the 1stJanuary 2015, this maximum interval can be extended to 15 years, provided the conditions of Annex Dare fully met and approval from the relevant competent authority(ies) has been given.
For over-moulded cylinders the interval is determined in accordance with Table 1.4.4 Composite cylinders
For composite cylinders, the determination of the interval between periodic inspections shall dependon the content of a written scheme that shall be approved by a competent authority, or body designatedby this authority, which issued the type approval.
Annex E provides guidance on the requirements for 10-year periodic inspection interval for compositecylinders.BS EN 16728 pdf download.