ISO 11755 pdf download – Gas cylinders -Cylinder bundles forcompressed and liquefied gases (excluding acetylene)-Inspection at time of filling

ISO 11755 pdf download – Gas cylinders -Cylinder bundles forcompressed and liquefied gases (excluding acetylene)-Inspection at time of filling.
i) visible surfaces of the cybnders are free from any signs of dents, cuts. gouges. fire damage or any other signs of damage. Rejection criteria shall be applied in accordance with ISO 6406. ISO 10461 or ISO 11623 as appropriate. If any cylinder Is damaged. the cylinder bundle shall not be filled but shall be Identified and removed from service for corrective action. In the case of fire damage, the bundle shall be disassembled and all cylinders inspected; any suspect cylinders shall be revalidated or rejected.
j) the bundle does not show any signs of having been immersed in water or other liciids (e.g. cylinders covered In mud or seaweed) or any signs of tampering (e.g. loosened bolts, missing panels).
k) the cylinder valves, it fitted, are all in the open position,
I) the main outlet valve is free from contamination and Is undamaged and has the correct thread for the gas to be filled,
m) any pressure relief devices, such as relief valves or bursting discs, are in place and have not been visibiy damaged or allered,
n) in the case of liquefied gases. the tare weight and maximum permissible fiNing weight are legible, and
0) lithe case of compressed gases, the maximum permissible operating pressure is legible.
Additionally, a check of the main outlet valve shall be carried out to ensure that the valve operates property.
Before filling, it shall be verified that the bundle Is free from any internal contamination which can affect its integrity, e.g. by ensuring that the bundle has a positive residual pressure and, for liquefied gases, by checking the mass against the tare weight of the bundle.
4.2 Bundle identification
The following necessary data shall be permanently marked or labelled on the cylinder bundle:
a) design reference number, and approval number (If appropriate);
b) character(s) identifying the country of approval, using the distinguishing signs of motor vehcles in international traffic (see Reference (2J);
c) inspection stamp mark or stamp of authorized inspection body;
d) date of initial inspection and test, the year (four digits) followed by the month (two digits) separated by a slash (e.g. 2003)02);
e) the test pressure. In bar21, preceded by the letters ?H and followed by the letters BAR”;
f) for bundles filled by weight the tare weight and maximum permissible filling weight followed by the letters for the unit;
g) in the case of pressure receptacles for compressed gases. the working pressure, in bar, preceded by the letters ‘PW’;
h) for liquefied gases, the water capacity, in litres, expressed to three significant digits rounded down to the last digit, followed by the letter t’;
I) the manufacturer’s mark registered by the competent autf’ionty. If the country of manufacture is not the same as the country of approval, then the manufacturer’s mark shall be preceded by the character(s) identifying the country 01 manufacture as indicated by the distinguisfing signs of motor vehicles in international traflic (see Reference (2)). The country mark arid the manufacturer’s mark shall be separated by a space or stash, and
j) the serial number assigned by the manufacturer.
4.3 Inspection during tilling
To prevent overt illing of bundles or individual cylinders within bundles, one of the following procedures shall be followed for bundles of liquefied gases equipped with individual closable valves:
— all cylinders of a bundle shall be dismantled and only one cylinder shall be filled at a time;
— each cylinder in a bundle shall be equipped with a separate tilling control device to monitor the exact amount of gas filled Into each cylinder of the bundle.
Ouring filling of the bundle, it shall be verified that no apparent leaks exist. Particular attention shall be paid to bundles containing toxic, flammable or pyrophoric gases.