0027/nd guidelines for Marine Lifting and Lowering Operations

GUIDELINES
 
FOR
 
MARINE
 
LIFTING
 
&
 
LOWERING
 
OPERATIONS 
0027/ND Rev 11 
 
Page 51 of 84 
accordance with these guidelines and a full fabrication specification (see Section 14.6.4) are provided 
for review. 
14.6.7 
For any existing spreader bar / frame which is modified for lifting operations, the existing as-built 
package is to be updated with the relevant requirements of Section 14.6.4. For load testing, the 
requirements, of Sections 14.6.5 or 14.6.6 are also applicable. 
14.6.8 
Spreader bars / spreader frames required to be wet stored for an extended period prior to use (e.g. for 
the recovery of a subsea asset) shall have adequate resistance against all possible mechanisms of 
degradation and the material properties shall be documented accordingly. Consideration should also 
be given to the use of anodes attached to the bars or frames if there are concerns about possible 
degradation.
14.7 
MATERIALS AND CONSTRUCTION OF OTHER LIFTING EQUIPMENT 
14.7.1 
For lifting beams, the requirements of 14.6.1 to 14.6.4 apply and the equipment shall be subject to a 
proof load test in accordance with the following requirements

For a WLL ≤ 10 tonnes the proof load shall be 2 x WLL; 

For 10 tonnes < WLL ≤ 160 tonnes the proof load shall be (1.04 x WLL) + 9.6 tonnes; 

For a WLL > 160 tonnes the proof load shall be 1.1 x WLL
14.7.2 
Other lifting equipment, as defined in section 9.3.5, shall be designed, manufactured and tested 
according to a recognised code for such equipment and shall be delivered with adequate certification. 
14.7.3 
The WLL shall be clearly marked on the equipment and the certification along with any limitations on 
the applied load. 
14.7.4 
Other lifting equipment required to be wet stored for an extended period prior to use (e.g. for the 
recovery of a subsea asset) shall have adequate resistance against all possible mechanisms of 
degradation and the material properties shall be documented accordingly. For certification 
requirements, see Section 15.6.6.  
14.7.5 
For single sheave blocks, the equipment shall be subject to a proof load test in accordance with the 
following requirements

The proof load shall be 4 x WLL (4 x WLL is the load applied to the head fitting i.e. each leg 
of the fall on the sheave is to be 2 x WLL); 
Note, the WLL of a single sheave block, with or without beckets, shall be taken as 50% of the resultant 
load on the head fitting. 
14.7.6 
For multiple sheave blocks, the equipment shall be subject to a proof load test in accordance with the 
following requirements

For a WLL ≤ 25 tonnes the proof load shall be 2 x WLL; 

For 25 tonnes < WLL ≤ 160 tonnes the proof load shall be (0.933 x WLL) + 27 tonnes; 

For a WLL > 160 tonnes the proof load shall be 1.1 x WLL
Note, the WLL of a multiple sheave block shall be taken as the resultant load on the head fitting. 
14.7.7 
For items such as chains, hooks, swivels, etc., the equipment shall be subject to a proof load test in 
accordance with the following requirements

For a WLL ≤ 25 tonnes the proof load shall be 2 x WLL; 

For a WLL > 25 tonnes the proof load shall be (1.22 x WLL) + 20 tonnes
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