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Today, the application of recommended guidelines and rules vary from the one extreme to the other. The reasons are many.
The big difference between GIS and AIS as it comes to the amount of gas used, is visualised by the fact that generally only gas insulated power equipment are systematically recycled. The cost of equipment and manpower of course also affects the implementation of testing procedures.
Gas purity and recycling procedures has different criterias worldwide even though some standards such as IEC60376 and IEC 60480 aims to satisfy the need for these criterias. |