POWERTEX Grade 10, User Manual

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a)
Illegible sling markings i.e. sling identification and/or working load limit.
b) Upper or lower terminal fitting has deformed.
c) The chain has been overloaded. If the chain slings have extended if free rotation between the
links are missing or if there is a noticeable difference in length between legs in a multi-leg sling, the
reason can be that the chain has been overloaded.
d)
Wear by contact with other objects usually occurs on the outside of the straight portions of the
links where it is easily seen and measured. Wear between adjoining links is hidden. The chain
should be slack and adjoining links rotated to expose the inner end of each link. Inter-link wear (in
the bearing points) is tolerated until the mean value of two measured values 90° against each other
has been reduced to 90% of the nominal diameter.
e) Cuts, nicks, gouges, cracks, excessive corrosion, heat discoloration, bent or distorted links or
any other defects.
f) Signs of “opening out” of hooks, i.e. any noticeable increase in the throat openings or any other
form of distortion in the lower terminal. The increase in throat opening should not exceed 10% of
the nominal value or be such as to allow the safety latch, if fitted, to become disengaged.
Inspection: A thorough examination should be carried out of a competent person at intervals not
exceeding twelve months. This interval should be less where deemed necessary in the light of
service conditions. Records of such examinations should be maintained.
Chain slings should be thoroughly cleaned to be free from oil, dirt and rust prior to examination.
Any cleaning method which does not damage the parent metal is acceptable. Methods to avoid are
those using acids, overheating, removal of metal or movement of metal which may cover cracks or
surface defects.
Adequate lighting should be provided and the chain sling should be examined throughout its length
to detect any evidence of wear, distortion or external damage.
Repair: Any replacement component or part of the chain sling should be in accordance with the appropriate European Standard for that compo-
nent or part. Use only original spareparts.
If any chain link within the leg of a chain sling is required to be replaced then the whole length of the chain leg should be renewed.
The repair of chain in a welded chain sling should only be carried out by the manufacturer.
Components that are cracked, visibly distorted or twisted, severely corroded or have deposits which cannot be removed should be discarded and
replaced.
Minor damage such as nicks and gouges may be removed by careful grinding or filing. The surface should blend smoothly into the adjacent ma
-
terial without abrupt change of section. The complete removal of the damage should not reduce the thickness of the section at that point to less
than the manufacturer’s specified minimum dimensions or by more than 10% of nominal thickness of the section.
In the case of chain slings on which repair work has involved welding, each repaired chain sling should be proof load tested following heat
treatment using a force equivalent to twice the working load limit and thoroughly examined before it is returned to use. However, where repair is
carried out by inserting a mechanically assembled component, proof-testing is not required providing that the component has already been tested
by the manufacturer in accordance with the relevant European standard.
End of use/Disposal
Chain sling shall always be sorted/scrapped as general steel scrap.
Your POWERTEX distributor will assist you with the disposal, if required.