Problem mrc SNF 2012-10-23 17:44:25: Gate valve seal fails during roughing

jimkruger at snf.stanford.edu jimkruger at snf.stanford.edu
Sun Dec 23 09:09:41 PST 2012


At first, only sometimes but after 2 or 3 runs, every run. Pressure bursts high in forline about 20 or 30 seconds into roughing.
Workaround is stop rough, 10 sec delay in center position, then pump foreline for a minute or 2 before going back to roughing.
If you dont understand this, please don't use MRC without help  (e.g. Jim Kruger or Nancy).



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