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11 Introduction Maintenance The conditions of use of the chain slings may affect their safety. It is necessary therefore to ensure, as far as is reasonably practicable, that the chain sling should be safe for continued use. If the tag identifying the chain sling and its working load limit becomes detached and the necessary information is not marked on the sling, the chain sling should be withdrawn from service. A competent engineer should examine it by observing following: • The chain sling markings are legible, i.e. information on the chain sling identification and/or the working load limit • Distortion of the upper or lower end fittings • Chain stretch and wear If any parts should be replaced, like the load pin or the latch of a hook, only use the original spare kits of Excel®. As soon as a load pin is misused or damaged or distorted, it must be replaced by the correct Excel® spare kit. Limitations in use - Never modify by welding or heat treating or grinding or any other process the components or the chains. It could alter their mechanical and/or chemical characteristics - Consult the manufacturer of the components and the chains if the chain sling is to be exposed to highly concentrated chemicals. The Excel® parts must not be used under chemical influences such as acids or alkaline solutions. - The rating of lifting accessories in European Standards assumes the absence of exceptionally hazardous conditions. This concerns offshore activities, lifting of persons and lifting of potentially dangerous loads. In such cases the degree of hazard should be assessed by a competent engineer and the working load limit adjusted accordingly. - If extreme temperature situations are applicable, the following load reduction must be taken into account: Temperature Reduction for elevated temperatures °Celcius New Working Load Limit up to 200 °C 100 % of original Working Load Limit 200 – 300 °C 90 % of original Working Load Limit 300 – 400 °C 75 % of original Working Load Limit > 400 °C not allowed The use of chain slings within the permissible temperature range in the above table does not require any permanent reduction in working load limit after the chain sling is back to normal temperatures. In the case of accidental exposure to excessive temperatures, the chain sling should be withdrawn from service. Conversion factors To convert from to multiply by Length mm inch 0.0393701 inch mm 25.4 Mass US tons metric tons 0.9071847 metric tons US tons 1.1023113 metric tons pounds 2204.6226218 pounds metric tons 0.0004536 metric tons kilogram 1000 kilogram metric tons 0.001 metric tons kilo Newton 9.8066500 kilo Newton metric tons 0.1019716 pounds kilogram 0.4535924 kilogram pounds 2.2046226 Torque Newton meter foot pound-force 0.7375621 foot pound-force Newton meter 1.3558180

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