Design Institute for Emergency Relief Systems (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.

The Purpose of Diers

  • to reduce the frequency, severity and consequences of  pressure producing accidents, and
  • to develop new techniques which will improve the design of emergency relief systems.

For information on the DIERS User Group, please contact Angela Louis at 646-495-1390 or email angel@aiche.org

Go to DIERS User Site

Join AIChE & DIERS

Join or Renew

Join or Renew your AIChE membership and add DIERS for an additional $25*

*applies to professional and graduate members. Be sure to select DIERS in the membership option section.

Join DIERS Only

Join Now

Join DIERS only for $75

 

Note: If you are a fully-paid AIChE member with no outstanding dues, you can add DIERS to your membership by contacting customer service.

Spring 2015 AIChE / CCPS Global Congress on Process Safety

  • When: Wednesday, June 4, 2014
  • Where: Austin, TX

Go to GCPS and Registration

DIERS Track Project

Conference Registration

2015 Second Joint DIERS European Meeting

  • Where:  Duesseldorf, Germany
  • When: June 10 – 12, 2015

​2015 Meeting Announcement (PDF)

DIERS Elections

DIERS will hold elections during the period 1 – 28 February, 2015 for the positions of Chair, Vice-Chair / Secretary, and seven Operating Committee Positions as follows:

  1. Meeting Arrangements Chair,
  2. Program Chair,
  3. Membership and Resources Chair,
  4. Finance Chair,
  5. General technology Project Chair,
  6. Special Technology Projects Chair, and
  7. Outreach Chair

Candidates for each position and their bios and position statements will be posted on this site in early January.

Corporate Membership

Participation in DIERS is recommended for all professionals involved in designing Emergency Relief Systems (ERS) especially for reactive systems. DIERS Membership is free and open to all companies worldwide.

Go to DIERS Membership

Meetings

DIERS meets twice a year, in the Spring and Fall  in different cities in the US. To learn more about the upcoming event, click below. 

Go to DIERS Meetings

Communications

The DIERS site is updated regularly for users to access the latest meeting minutes and database. See the latest in meeting minutes and announcements.

Go to DIERS Communications

Committees

See the latest in DIERS committees and projects.

Go to DIERS Committees

References

The DIERS site regularly publishes a list of User Group References.

Go to DIERS References

Round Robin

See what's new in DIERS Round Robin.

Go to DIERS Round Robin

Publications

Go to DIERS Publications

Courses

Go to DIERS Courses

Software

See policies, licensing agreements, and subscription information for DIERS software.

Go to DIERS Software