MIL-HDBK-1005/7A
6.12
Chemical Feeding and Handling
6.12.1
Guidance. Equipment should be as simple as possible.
In any installation or facility, equipment procurement should be
limited to the smallest practicable number of manufacturers.
6.12.1.1 Standardization. Equipment should be standardized
wherever possible. Use identical or similar components to the
maximum extent. Feeding equipment should be homogeneous (that
is, all self -powered, all pneumatic, etc.).
6.12.1.2 Equipment Accuracy. Equipment accuracy tolerances
should be as low as possible consistent with the functions
desired.
6.12.1.3 Equipment Ranges. Before selecting equipment, the
required maximum and minimum capacities should be computed, and
ranges should be kept as narrow as possible for any piece of
equipment.
6.12.1.4 New Products . New products and applications are
constantly being developed. Approval or advice on their uses
must be requested from Naval Facilities Engineering Command
Criteria Office or HQ AFCESA/CESC.
6.12.2
Chemicals . All chemicals used in water treatment
operations should meet purity requirements of American Water
Works Association (AWWA) standard specifications. Design should
be based on the assumption that chemicals will be purchased in
normal shipping containers (such as bags, drums, cylinders, or
carboys) rather than bulk car or truckloads. Functions of
various chemicals and chemicals strengths are provided in Water
Treatment Plant Design , Appendix A, "Properties and
Characteristics of Water Treatment Chemicals," AWWA, third
edition.
6.12.2.1 Handling and Storage . Refer to Water Treatment Plant
Design, Chapter 15, "Chemicals and Chemical Handling," AWWA,
third edition; Recommended Standards for Water Works, Part 5,
"Chemical Application," Health Education Services, 1997 edition.
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