Depending on the actual HP steam flow rate (linear line velocities), quark's comprehensive estimate on condensation during normal operation, may result in the MP steam having still a quality higher than 95% at the farthest delivery point.
Thus, drops of moisture may not settle out to be removed by the traps along the main header, but would possibly do so at the end of the pipe run, or when encountering obstructions to flow. Multiplying quark's estimates by 30, for the full length of the header, may signify in a condensate load with a potential for water hammer.
Collecting drain bottles should be installed along the MP header to enable condensate to reach the traps for these to function, and to avoid water hammering in the MP steam pipe itself.
Besides, fixtures to protect the LP steam main, such as indicated by Fzob and Joestream, would have to be provided, in particular, when the smaller (reduced) diameters of the LP header end-sections receive flashing condensate from the MP header.