AWWA B200 pdf download.Sodium Chloride
Sec. 1.1 Scope
This standard describes sodium chloride in the form of rock, vacum-granu- lated, compressed vacuum-granulated, solar, or compressed solar salt for use in the recharging of cation-exchange materials in water supply service for softening municipal and industrial water supplies. Additionally, sodium chloride is used in the recharging of anion-exchange materials for nitrate removal or dealkalization of municipal and industrial supplies.
Sec.1.2 Purpose
The purpose of this standard is to provide purchasers, manufacturers, and suppliers with the minimum requirements for sodium chloride, including physical, chemical, packaging, shipping, and testing requirements.
Sec. 1.3 Application
This standard can be referenced in contract documents for purchasing and receiving sodium chloride and can be used as a guide for testing the physical and chemical properties of sodium chloride samples. The stipulations of this standard apply when this document has been referenced and only to sodium chloride used in water supply service.
5.2.2 Number of packages. If the material is packaged, not less than 5 percent of the packages shall be sampled. No sample shall be taken from a broken package.
5.2.3 Bulk shipments. When delivered in bulk, the samples shall be repre- sentative of all parts of the bulk loads and shall not contain a disproportionate share of the top or bottom layers. Coarse material taken from bulk loads shall comprise at least 10 shovelfuls from different parts of the load, and the total material shall weigh not less than 100 lb (45 kg). The material shall be mixed and divided to make a sample of approximately 10 Ib (4.5 kg) and handled as described in Sec. 5.2.5.
5.2.4 Device. Finely divided material, whether in bulk or packages, may be sampled using a sampling tube that is at least 34 in. (19 mm) in diameter. Special precautions shall be used to avoid taking a disproportionate amount of the sample from the top or the bottom layers of the material. If the sodium chloride is handled by conveyor or elevator, a mechanical sampling arrangement may be used.
5.2.5 Handling. The gross sample, weighing at least 10 Ib (4.5 kg), shall be thoroughly mixed and split to provide three 500-g material samples. Each material sample shall be sealed in an airtight, moisture proof glass or plastic container. Each sample container shall be labeled to identify it, and the label shall be signed by the sampler.AWWA B200 pdf download.