CURRENT AS OF 23-02-2011 PAGE 1
A NOBLE & SON LTD
NZHPH020P PIPE HOOK CARE & USE ADVICE
GENERAL CAUTIONS
Ratings or Working Load Limits (WLL) shown in Nobles literature
and stamped onto pipe hooks apply only to new or as new condi-
tion products. The working load limit can be affected by inten-
tional alterations, damage, corrosion, misuse and special condi-
tions of use. Always have your pipe hooks regularly inspected by
a competent person who may suggest repairs or condemn your
pipe hooks should anything such as the above cause a reduction
in the WLL.
Shock, and/or unusual loading can greatly increase the actual
loads placed upon lifting gear. Extraordinary conditions and envi-
ronments must be taken into account when selecting products
for use in pipe hook systems. This hook has been designed for
normal lifting environments, the suitability of the attachment for
use in special environments such as at sea, in corrosive environ-
ments or at extreme temperatures must be assessed by a com-
petent person prior to use.
The WLL which applies for any Nobles pipe hook applies only for
uses compliant with AS4991-2004. The WLL applies only to the
structural integrity of the hook itself. Use with a some payloads
and/or slings may reduce the hooks’ capacity.
Pipe hooks, must always be correctly selected and fitted for every lift. Attention must be paid to the security of the hook,
the load capacity available and the proximity of any hazards.
Never weld any part of a pipe hook without consulting the manufacturer. Special steels are commonly used and special
welding procedures and precautions may be necessary.
A site and/or job specific hazard & risk assessment is recommended prior to use.
PIPE HOOK CONDITIONS OF USE
When using pipe hooks the safety and stability of the load is of utmost importance. The pipe section to be lifted must be
of a known mass and have a centre of gravity about the geometric centre.
A pair of pipe hooks is only as good as the integrity of it’s payload. The pipe to be lifted must have sufficient strength to
be able to be lifted by the region contacting the hook. This pipe hook is generally suitable for concrete pipes however:
•
Other pipe-like objects may be lifted provided that the hooks are secure and that the wall thickness is gener-
ally no less than 38mm (1.5 “). An excessively thin walled pipe may jam in the hook heel and overstress the
hooks.
•
Pipes with delicate end features may be damaged by these hooks. The use of packing materials may disturb
the geometry of the lift and are not recommended.
•
Pipes which are damaged need to be assessed as suitable for lifting. The hooks cannot be used upon dam-
aged sections of pipe.
Any special requirements specific to a particular site or jurisdiction should be checked prior to use.
Generally, the use of open pipe hooks requires that the hooks are maintained in position as the load is taken up. Addi-
tional personnel may be required. These personnel shall be adequately trained and licensed for this work and must stand
clear of the load before it is lifted off its supporting surface(s).
When landing pipes using pipe hooks, the payload becomes free generally as soon as the load is set down. Users shall
ensure that the pipe is placed onto chocks or similar, and upon level ground so that the pipe does not shift as it is set
down which may cause a dangerous situation. Once set down, ensure that the payload is secure and unable to roll or slide
out of position.
The sling arrangement used with these hooks is critical, please refer overleaf.
Contact Us on 1300 711 559 from anywhere in Australia
or (+61)8 8260 6688 worldwide
www.nobles.com.au
