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Committee Report: Gasket materials
Publication year - 1998
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1998.tb08539.x
Subject(s) - chloramine , elastomer , natural rubber , chlorine , gasket , biochemical engineering , environmental science , engineering , computer science , chemistry , mechanical engineering , organic chemistry
Elastomers' use‐specific sensitivity to chloramine makes it difficult to develop test methods, pass‐fail criteria, and a standard appropriate for all rubber components. Rubber components are used extensively in water distribution systems, and their long‐term performance is of concern to water utility engineers. Thus, AWWA member utilities asked the AWWA Research Foundation (AWWARF) to investigate how chlorine and chloramine affect these components. In 1992, AWWARF commissioned a study to evaluate the effects of chlorinated and chloraminated water on two types of elastomers: generic specimens of known formulations and sheet stock of unknown formulations. This report responds to the AWWARF research, which concluded that chloraminated waters are more detrimental to most elastomers than waters with equivalent concentrations of chlorine. It also enumerates proposed actions, including developing pass‐fail criteria, related to these findings and explains why it is not currently feasible to develop an AWWA standard for all gaskets used in chloraminated waters.