Assertion: boiler | /r/CapableOf | use unsoftened feedwater
Facets:
value: to maintain alkaline conditions
type: PURPOSE
Source sentences:
text: Boilers operating at pressures less than 200 pounds per square inch (1,400 kPa) may use unsoftened feedwater with the addition of sodium carbonate or sodium hydroxide to maintain alkaline conditions to precipitate calcium carbonate, magnesium hydroxide and magnesium silicate.