est B V Dip lubrication LP Air intakeFan P B3FV-26-C Bevel-helical gear unit B3

Flender/Flender Gear Units/Bevel-helical gear unit B3

sions is particularly important in international movement of contain- ers. Highway regulations, bridge capacities, underpass heights, and street widths vary considerably in different countries. If containers are not designed to meet these varyingconditions, true intermodal transportation on an international basis is impossible (Ryalland Lipton, . Containers belonging to one shipping company can often be used byanother company. Therefore, equipment has to be interchangeable. To be truly substitut- Transportation and Handling 5 able, the mechanical and thermal specications of the containers, as well as the dimen- sions, must be standardized (International Institute of Refrigeration, . Marine containers are standardized by the International Organization for Standard- ization (ISO) under reference 1-2 of 1. Containers are 2.4 (8 ft) wide andvary in height from 2.4 (8 ft) to 2.8 (9 ft 6 in). The most common container lengths are 6.0 (2 ft) and 1.1 (4 ft). The mechanical resistance, airtightness, insulation, and, in certain cases, features of the refrigeration unit and electrical connectionsare all specied in the ISO standard (International Institute of Refrigeration, . 5.5 Air Transport Air transport is generally used to carry, over long distances, produce that has short shelf life and therefore cannot easily be transported by road, rail, or sea. Airfreight can also beused when there is shortage of particular fruit or vegetable in the market or whenexceptionally high prices are available for out-of-season produce. Air transport is more expensive than road, rail, or marine transport; however, it gives quicker return on capital that is tied up during transportation. Since the 1s,the use of larger, more efcient aircraft has resulted in continually decreasing costs (per metric ton-kilometer) for airfreight of produce (Peleg, . Nowadays, specially modi- ed wide-bodied jets are dedicated specically to the airfreight of fresh produce and gen-eral cargo. For exa