Design Institute for Emergency Relief Systems (DIERS)

Formed in 1976, the Design Institute for Emergency Relief Systems (DIERS) is a consortium of 29 companies to develop methods for the design of emergency relief systems to handle runaway reactions. DIERS became a users group in 1985. Presently, over 300 companies have formed the DIERS Users Group to cooperatively assimilate, implement, maintain and upgrade the DIERS methodology.


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.

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

Go to DIERS User Site

Corporate Membership

Participation in DIERS Users Group 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


The DIERS Users Group 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


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


See the latest in DIERS committees and projects.

Go to DIERS Committees


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


Go to DIERS Publications


Go to DIERS Courses


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

Go to DIERS Software