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Maintenance operations within a specified time period, the station attendant in after completion of maintenance work pin down should immediately report to train dispatcher, train dispatcher release maintenance job no longer end restore traffic command. If you need to extend the operation time, the train dispatcher will issue the dispatch order approval.
High efficiency air filter is generally used as the filter end, so the requirements for high efficiency filters are also the most stringent. High efficiency filters are the most critical level of filter at all levels and require additional "viewing". The most fundamental way to extend the life of an efficient filter is to keep the dust in the prefilter. The replacement of pre-filtration usually does not need to be discontinued, without debugging, so experienced owners will put their attention and money on the prefilters. For the 10,000 and 100,000 clean plants. Prefiltration can be used with F8 filter, which can last up to five years. F8 filters are the most common prefilters in foreign projects and domestic new projects. For chip plant 100, level 10 or higher, the common efficiency level of prefilters is H10, and many new items are selected for HEPA. In the design of clean room air conditioning system in the past, the filter is commonly configured as: effective and efficient. At that time, the life of high efficiency filters was only 1--3 years, and the worst was months. Therefore, the efficiency of the prefilter determines the life span of the end-filter
Do not use monthly construction plan instead of construction scheduling order. The construction department (unit) shall report the construction plan to the construction dispatcher in advance. The construction dispatcher shall issue a construction plan dispatch order to the driving units in advance, release the construction plan dispatching order, and prohibit the contents and commands that are not relevant to the premises. The actual construction scheduling order is issued by the train dispatcher.
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