ANNEX SCOPE OF TESTING; TEST CRITERIA
Information on the service life of
L&W high pressure hoses
Version: 2020-06-01
Page - 10
Recommended scope of testing "visual
inspection" (before initial commissioning or
recommissioning)
Is all user information required for safe operation of the system available (e.g. flow chart,
operating instructions)?
Do the hose lines comply with the flow chart or parts list?
Are there protective measures in place, such as pressure relief valves, for cases of unusually
high pressure pulses or pressure amplifications?
Are the hose lines marked with the name or abbreviation of the manufacturer, maximum
permissible operating pressure, nominal diameter, quarter/year of manufacture?
Are the hose lines installed in such a way that, in accordance with DIN 20 066
- the natural position does not hinder movement?
-
turning or twisting of the hose is prevented, likewise tensile load caused by a line that is
too short and a bending radii that is too small?
-
the hose is routed via a kink protector (if necessary on the connecting element)?
-
sufficient clearance prevents external mechanical influences or abrasion on the
edges?
-
hose bridges prevent damage being caused by driving over the hose line?
-
hose guides (such as hose saddles and sufficiently wide hose brackets) protect loosely
laid hose lines and
-
a heat shield protects against high temperature exposure?
Are suitable protective measures, such as fixtures, safety gear or shielding provided for hose
lines that, in the event of failure, pose a risk of whipping?
A risk is to be assumed if persons are generally present in the immediate vicinity of the hose
lines, for example.
Do the hose lines of newly commissioned or re-commissioned machines already show signs
of damage?
Are the installed hose lines still within the storage/use period recommended by the
relevant manufacturer?
Are the hose lines free of paint?
Are the hose lines free of chafe marks?
Does the operating manual contain information on test intervals? If so, what?
Note:
The installed hose lines should not be made from used hoses or used press fittings that
have already been in use as part of a hose assembly!
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Страница 173: ...E A T T A C H M E N T Version 11 12 E...
Страница 177: ...INFORMATIONON THE SERVICE LIFE OF L W HIGH PRESSURE HOSES...
Страница 185: ...ANNEX...