Which standard stipulates that sulfur recovery units must be designed in accordance with the N+1 principle?
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Which standard stipulates that sulfur recovery units must be designed in accordance with the N+1 principle?
There is a notion that such key environmental protection equipment should have a certain margin of processing capacity, but it’s not clear which standard or specification requires this
GB31570-2015
I remember that the standard wording doesn’t mention N+1 either; rather, the design principle is that once one set stops operating, there is still a place where the acidic gas can be processed.