NA-06 - Cleaning: Cleaning Pressure Pipes

NA-06 - Cleaning: Cleaning Pressure Pipes

Recommended fields of application for cleaning methods

Table: 
Recommended fields of application for cleaning methods in accordance with [Baren2006] [Dettm2005a]
  Field of application
 		  
   Method Nominal size Type of deposits Relevance in practice
High pressure cleaning High pressure cleaning ≤ DN 2,000 (80 in) (economic)
> DN 2,000 (80 in) (with special nozzles)		 Loose and solidified deposits and agglomerations (fats, incrustations), small roots, congestions High
Flushing methods Surge flushing All DN Loose deposits Medium
Back-up flushing ≥ DN 1,200 (48 in) (Flushing shield)
DN 400 to DN 2,400 (Beaded balls)		 Loose deposits
Mechanicalmethods Manual cleaning ≥ DN 1,200 (48 in) Solidified deposits and agglomerations, root intrusions, protruding or unprofessionally installed lateral connections Medium to high
Cleaning by means of scrapers Inverted siphons, pressure lines Loose deposits Medium
Rotary chain cutter DN 50 (2 in) to DN 2,000 (80 in) Root intrusions, incrustations, solidified deposits and agglomerations Medium to high
Milling unit DN 100 (4 in) to DN 1,000 (40 in) Solidified deposits and agglomerations, root intrusions, protruding or unprofessionally installed lateral pipes Medium to high
Robot method DN 100 (4 in) to DN 800 (32 in) Solidified deposits and agglomerations, root intrusions, protruding or unprofessionally installed lateral pipes Medium to high
Other methods Physical methods Inverted siphons, pressure lines Unconsolidated deposits Low
Chemical methods < DN 1,000 (40 in) Root intrusions, incrustations Low
Biological methods All DN Fat deposits Low
/ 12