cleaning +orifice+spectacle blind

Hi ALL
Long time i haven't posted any query so today i am shooting one to all Talented piping engineers.
Do we open clean drain system ( drains to all main steam pipes) during the main steam pipes steam blow out ?
also we use Orifice in these drain pipes before it drains to single header.
so do i need to remove these orifice while steam blow out to avoid clogging and all?
does spectacle blind can help here in any means?
Please give your valuable suggestions!!!!!!!

The first thing to remember is that an Orifice plate is a machined article and should not be subjected to any rubbish passing through it during flushing whether it is by water or a steam blow down. They should be removed and safely stored before refitting after all cleaning is carried out.
Why do you fit expensive orifice plates to drain lines fitting a reducer would serve the same purpose and a much lower cost, the flanges are more expensive because of the pressure taps in them.
Spectacle Blinds are a different animal as they are just full bore and be open while flushing.