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 DIERS, please contact Angela Louis at 646-495-1390 or email angel@aiche.org

Go to DIERS 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.

Click here if you'd prefer to download a writable PDF version of the application.

Join DIERS Only

Join Now

Join DIERS only for $75

Click here if you'd prefer to download a writable PDF version of the application.

 

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: April 26-30, 2015
  • 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)

2015 Joint DIERS-EDUG Registration Form

2015 Joint DIERS-EDUG Meeting Details

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

​Ballots will be available February 1, 2015. Only DIERS members will be eligible to vote. Click here to become a member.

Learn more about the 2015 Operating Committee candidates

Individual Membership

Participation in the Design Institute for Emergency Relief Systems (DIERS) is recommended for all professionals involved in designing Emergency Relief Systems (ERS) especially for reactive systems involving two-phase flow. Design of these systems can be some of the most challenging work an engineer can encounter. Membership in DIERS provides an opportunity to learn basic as well as advanced proven ERS design methodology. As a member you also interact with world class ERS designers, consultants, and valve manufacturers in the field. Attendance at meetings gives everyone exposure to excellent resources, up-to-date information on the latest techniques and research, and a wealth of practical experience.

DIERS invites you to join and share your knowledge and experiences at the semi-annual meetings with other members.

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 members 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