Division 4.2.9.2 Procedure

The containers, with the composite wrapping free of any protective coating, shall be hydrostatically cycle tested in the following sequence:

1. (a)

   Condition for 48 hours with a temperature ≥ 85 °C and a relative humidity ≥ 95 per cent;

2. (b)

   Pressure cycle between ≤ 2,0 MPa and ≥ 1,25 times nominal working pressure at a temperature ≥ 85 °C and a relative humidity ≥ 95 per cent, for 1,5 times the number of filling cycles calculated in accordance with section 2.7.6.;

3. (c)

   Stabilise at ambient conditions;

4. (d)

   Condition the container and test fluid to a temperature ≤ – 40 °C as measured on the container surface and in the fluid;

5. (e)

   Pressure cycle at ≤ – 40 °C between ≤ 2,0 MPa and ≥ nominal working pressure, for 1,5 times the number of filling cycles calculated in accordance with section 2.7.6.;

6. (f)

   Leak test^f1 in accordance with section 4.2.11.;

7. (g)

   Burst test in accordance with section 4.2.1.2.