Regarding the drawing of the blind flange in the blind flange operation ticket’s diagram showing its location
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For example, if I need to install a blind flange, I have to obtain a blind flange permit, and that permit must include a diagram showing the location of the blind flange. So when drawing this blind flange, should I depict it in its closed position or in its open position? Some colleagues believe it should be shown as a blind plug; the blind plug shown in the blind plug diagram represents the actual status of the blind plug at present ； Some colleagues think it should be drawn as an open position; the blind plate in the blind plate legend represents the operational outcome I aim to achieve ； Since we can’t reach a consensus now, and after checking the relevant specifications for blind plates, no specific rules were found, I would like to ask everyone what exactly should be drawn?
A blind plate diagram shows the state of the blind plate after the operation is completed; for example, if the blind plate is to be in a conductive state, then a diagram showing a conductive blind plate is drawn. Generally, blind plate tickets will indicate whether it is to be removed or plugged
It is believed that both the addition and removal of blind plates should be shown as blind areas, with the position of the gaskets (whether they are blind gaskets) also indicated.