NAVY MIL-PRF-32217 INT. AMD. 1-2007 SCALE PREVENTION IN SEWAGE COLLECTION, HOLDING AND TRANSFER (CHT) AND VACUUM CHT (VCHT) PIPING SYSTEMS FOR USE ON NAVAL SURFACE SHIPS [Use In Lieu Of: NAVY MIL-PRF-32217 ADMIN NOTICE 1]
This specification covers requirements for scale (see 6.7.5) prevention in sewage (see 6.7.7)
collection, holding and transfer (CHT) and vacuum CHT (VCHT) piping systems for use on naval surface ships,
including the use of scale prevention chemical products and non-chemical (physical treatment) processes and
systems to prevent scale formation in shipboard collection sewage piping systems.