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Welcome to DIERS

The Design Institute for Emergency Relief Systems (DIERS) was formed in 1976 as consortium of 29 companies to develop methods for the design of emergency relief systems to handle runaway reactions. DIERS spent $1.6 million to investigate the two-phase vapor-liquid onset / disengagement dynamics and the hydrodynamics of emergency relief systems. Of particular interest to DIERS were the prediction of two-phase flow venting and the applicability of various sizing methods for two-phase vapor-liquid flashing flow.

DIERS became a Users Group in 1985 with over 200 companies (75 percent domestic and 25 percent international) ultimately requesting membership and having their corporate representatives participate in the semi-annual meetings.

The recent reorganization of the DIERS Users Group within the AIChE has resulted in a change to a Technical Entity called “DIERS”. The basis for Membership in DIERS has been changed from CORPORATE REPRESENTATION to INDIVIDUAL MEMBERSHIP. Eligibility for DIERS MEMBERSHIP is contained in the new Bylaws, which are posted under MEMBERSHIP on the www.aiche.org/diers website. Individual membership requires a yearly payment of $25 to AIChE for the benefit of DIERS.


For membership information, contact

Harold G. Fisher, Chair of DIERS

229 Brookhaven Drive
Nitro, WV 25143
Phone: 304-776-6371
Fax: 304-776-1076
E-mail at fisherhg@suddenlink.net

For more information about DIERS printed books and software, click here or contact AIChE

120 Wall Street
New York, NY 10005
Customer toll-free number: 800-242-4363
Fax: 646-495-1501
Email at xpress@aiche.org, or one of the following:

For the DIERS manual online at Knovel.com, please click here

For historical DIERS research reports online, please click here and enter the search string "AIChE B"

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