Sludge precipitated in HP Dosing (TSP) stainer

Question

Hello,
Today we found some kind of slurry sludge in the HP dosing pump stainer.
What can be the issue related to this?
Attached few photos.
COMMENT BY WATER NETWORK ADMIN (In HP Dosing Phosphate especially Tri sodium phosphate is added at the  boiler  drum which is operating at high pressure (so called  HP dosing  system) through  HP dosing  system. If it is  dosed  at feed pipe, it may react with impurities and sludge may be deposited at the feed line.)

Terry Scheurman · Answer

Not having much to utilize other than the color of the deposit in the pictures and your description there is a significant probability it is Magnesium phosphate.  If this yellowish material turns white as it dries, the chances of it being magnesium phosphate are 99.8%. Now if it is Mag phos, the situation you have is a little more serious that gunk at the dosing pump strainer. Either you are making down your TSP with poor water or you have poor make-up water quality or you have a H/E leak some place.  You need to do a cycle chemistry test to see what you water quality it. Are you measuring cat conductivity on your return condensate?

Sludge precipitated in HP Dosing (TSP) stainer

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