0027-nd rev 11.2 8-jul-16 guidelines for marine lifting and lowering operations
7.5 CONSEQUENCE FACTOR
c 7.5.1
The consequence factor,
c
,
should normally be taken as 1.3. A reduced consequence factor may be
considered in some cases which are given in 7.5.2 and 7.5.3. If an alternative consequence factor is
used, this must be agreed with GL Noble Denton.
7.5.2
If a single sling failure does not result in the total loss of the lifted structure, or the consequences of
sling failure may be regarded as negligible, a lower consequences factor may be applied subject to
agreement with GL Noble Denton but see Section 18.1.8.
7.5.3
A lower consequence factor could be applicable if the consequence of failure is considered tolerable
by all involved parties e.g. if the rigging is used for pulling/hold-back only and the consequences of
rigging failure may be regarded as small, then a lower consequence factor may be applied subject to
agreement with GL Noble Denton.
7.6 SLING OR GROMMET REDUCTION FACTOR
r
7.6.1
The reduction factor,
r
, due to end termination or bending is to be taken as the greatest of
s
(termination factor, see Section 7.7) and
b
(bending factor, see Section 7.8).
7.7 TERMINATION FACTOR
s 7.7.1
The termination factor,
s
,
for the end termination of the slings and wire ropes shall be documented.
The following minimum factors should normally be adopted and further details are given in EN 13411
(although nominally limited to wire ropes up to 60mm in diameter, the factors from EN 13411 are used
here for larger diameters), Refs [14] to [16].
11
