Dock Hoses Proof Test Requirement?

Asked by deema 7 months, 2 weeks ago | 3 Answers

Do you pressure test dock hoses using 1.5 design pressure similar to testing pressure vessels?


3 Answers

1
sicalamanto 7 months, 2 weeks ago

My 2 cents: The EN standards cover a range of temperatures under which the hoses would be used:

  • EN 1765 provides for a temperature range of -20 C to + 82 C.
  • EN 13765 provides for a temperature range of -30 C to + 150 C.
  • EN 1762 provides for a temperature range of -30 C to + 70 C (for LPG).
  • EN 13482 provides for a temperature range up to +200 C.

1
taddpham 7 months, 2 weeks ago

To clarify that Dock Hoses are generally used in processing crude oils, refined petroleum products, liquefied petroleum gas (LPG), chemical products, petroleum/chemical vapors, and for ballasting/de-ballasting environment.  

Testing Pressure should be 1.5 times working pressure (operating pressure) per EN 1765.  However, ensure all hoses are hydrotested to maximum surge pressure at factory.  

If project has surge considerations, then ensure this requirement is in the hose testing requirements.


0
taddpham 7 months, 2 weeks ago

In addition,

  • Maximum Rated Working Pressure (RWP), same as  Maximum Allowable Working Pressure (MAWP) for Dock Hoses may exceed the limits defined by the BS EN 1765 standard. However, RWP pressures should generally not to exceed 300 psi (20 bar).
  • Minimum Rated Working Pressure (RWP) for Dock Hoses should not be less than 150 psi (10 bar) irrespective of the hose application or service or design requirements.

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