SEC Bremen: оборудования для крепления контейнеров
Lashing bridges July 2014 © Technical alterations reserved 8.3 Description When the requested stackload for 40’ containers is exceeding the limit of approx. 100 tons lashing from hatch cover level might no longer be sufficient. For this reason lashing bridges are installed between 40’ hatches in order to realise more effective support by the lashings. Higher container weights can be realised in the upper tiers while the lashing system can be simplified, i. e. double cross short lashing system (Para-Lash) to be used for 40’ containers from lashing bridge level. Heavy and unhandy long lashing bars should not be used except at some outermost stacklocations. The installation of lashing bridges does not have any effect on 20’ stackloads because 20’ containers still have to be lashed from hatch cover level at midhatch position. The possibility to stow non-standard containers others than 20’/40’ ISO containers is restricted. For example 45’ containers can be loaded on top of two tiers 40’ containers otherwise they would interfere with the lashing bridge structure. Alternatively the length of hatch covers can be increased and additional foundations for 45’ containers to be arranged. It has to be kept in mind when elongating the hatches lashing operation of 40’ containers will become more difficult due to increased gap between lashing bridge and 40’ container end. Depending on the required stackload and number of tiers the height of lashing bridges can be increased so that the uppermost walkway is in line with top of 1st, 2nd or even 3rd tier containers. Stackloads up to 200t can be realized for 3-tier high lashing bridges in combination with external lashings. It should be noted when increasing the height of lashing bridges 3-tier high or more no longer the adjusting range of turnbuckles is sufficient to ensure unrestricted loading of 8’6’’ and 9’6’’ containers below lashing level. For this reason SEC has developed a special lashing plate with multiple holes for easy shifting of turnbuckle to higher position for lashing of high cube containers.
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