BS EN 13766:2010 pdf download

BS EN 13766:2010 pdf download.Thermoplastic multi-layer (non-vulcanized)hoses and hoseassemblies for the transfer of liquid petroleum gas and liquefied natural gas——Specification.
7.3 End fittings
End fittings and metallic ferrules shall be made from the following materials depending on the type of hose to be used ri the assembly:
— Type 1 hose: U (low temperature) grade cartion steel or stainless steel:
— Type 2 hose austenetic stainless steel tested in accordance with Annex C.
For aM types of end fittings, that part of the fitting that enters the hose and forms the means by which the fitting is connected to the hose shall be provided with scrolls or protrusions on the swface that correspond to the pitch of the internal helix wire of the hose.
7.4 Hose assemblies
Hose assemblies shall be fitted with end fittings as described in 7.3.
End fittings shall be attached to the hose by one of the following methods:
a) by the use of a seat and a metal ferrule which is swaged or crimped:
b) by the use of a thermoset resin e.g. epoxy and a metal ferrule which is swaged or crimped. NOTE Hoses should be as.senibled by the hose manufacturer
When tested by the methods given in Table 4, hose assembly shall conform to Table 4.
When assembled to a hose there shall be electrical continuity between the end fitting and the internal and external wires.
The following test procedure shall be used for type 1 and type 2 hose assembhes as given in Table 1, provided that the test equipment is statable for the appropnate specified type of test liquid. For type 1 hoses use refrigerated methylated spint at — 50 C t 5C arid for type 2 hoses use liquid nitrogen at — 196 C:
a) use an assembly having a length of at least 4 diameters free hose:
b) connect hose to test equipment designed for one of the above mentioned test liquids:
C) thermocouples can be used on the inside of the hose for a clear indication of the liquid level;
d) lay the hose In horizontal position (Figure El);
e) make sure that the hose can elongate dunng pressurizing, by using wheels or other transport equipment;
F) measure the electrical resistance between end fittings in accordance with EN ISO 8031:
g) start to fill the hose with one of the above mentioned test liquids:
h) when hose is filled completely with the appropriate test liquid given above, start to pressurize the hose to the maximum working pressure ven in Table 1:
) keep the hose on the maximum working pressure, given in Table 1, for 30 mm:
m) empty the hose and heat up the hose by using a hot air blower;
k) test the hose on leakage with nitrogen gas at the proof pressure given in Table 1: any leakage can be detected
by checking on pressure drop:
I) re-measure the electrical resistance between the end fittings in accordance with EN ISO 8031 and note any axial movement of either end fitting relative to the hose; compare results with measurement mentioned under f;
m) minimum 0420 cycles is required; the next cycle can be started when the hose is back at ambient temperature.
Alter completing 20 cycles test for leakage at ambient temperature using water at the proof pressure as per Table 1 and in accordance with EN ISO 1402, a burst test will be required, minimum burst pressure as per Table 1 in accordance with EN ISO 1402, The burst test shall be done with water at ambient temperature.
During testing no leakage is allowed.