Design Institute for Emergency Relief Systems Users Group of the American Institute of Chemical Engineers

February 20, 2013

DIERS Users Group Members

The Spring 2013 DIERS Users Group meeting will be held on April 17 to 19, 2013 (WEDNESDAY to FRIDAY) at the Trump International Hotel, 2000 Fashion Show Drive, Las Vegas, NV (One block from the strip and the Wynn Hotel).  Call (866) 939-8786 to reserve a room.  Check the website at  Room rates for the hotel will be $129 (single / double – studio suite king city view) plus 12 percent county tax.  Guest room rates will be extended for three days before and after the meeting.  Mention the DIERS Users Group to get our rate.  The hotel will hold our block of rooms until March 26, 2013.  A credit card will be required to register at the hotel and the first night room charge will apply.  Refunds will be made on reservations canceled more than 72 hours prior to confirmed arrival date.


Hotel parking, Internet access, and shuttle service are complimentary.  The resort and meeting room fees and down payment deposits have been waived.

Las Vegas hotels have tightened their booking procedures for meetings.  The DIERS Users Group in order to get the room rate and the concessions mentioned above had to guarantee a certain number of rooms and will have to pay for the rooms not used.  Therefore, if you attend the meeting, you will be expected to register and stay at the Trump Hotel.

Registration for and payment of the actual cost of the meeting (catering – lunches, coffee breaks, etc. and audiovisual) will be accomplished using the AIChE website and submission of a credit card.  We will no longer collect monies and pay for the meeting expenses on site.  The daily fee will be $85 and includes lunches, coffee breaks, meeting room rental and audiovisual charges.  Our catering contract must be guaranteed to the hotel NLT April 11 (Thursday).  No refund after that date since the DUG has to pay the guarantee.  The link to the AIChE credit card payment system is at the top of the webpage.

The schedule for the meeting is as follows:

          Date             Time       Activity

04 /17 / 13 (Wed) 8:00-5:00 Mathematical Modeling of ERS Design

04 /18 / 13 (Thur) 8:00-5:00 Business Meeting / Committee Reports/Technical Presentations

04 /18 / 13 No Group Dinner (Informal groups formed at meeting)

04 / 19 / 13 (Fri) 8:00-3:00 ERS Design/Testing Methodology

Speakers and Tutorials are needed for all three dates.  I need to issue the agenda by the first of March, so please respond ASAP.  Call (304) 776-6371 or E-mail to arrange a presentation.  Include Title, Duration, Speakers, and Desired Dates / Times.


Make early flight arrangements (six to eight weeks ahead) to find the best prices and available seats on desirable flights.


The API technology committee meetings will be held in Las Vegas at Caesar’s Palace starting on Monday (April 22, 2013) through to Wednesday following our meeting.  Both meetings will be considering the topic of safety relief valve stability and the OSHA RAGAGEP requirements and enforcement as well as new experimental programs to acquire the date required to make changes to current codes, standards, recommended practices, and guidelines.  Try to attend both meeting to get the latest information and to participate in the discussions and planning.  A special PERF II PRV Stability meeting has been scheduled by API for Thursday (April 25) from 10 am to 5 pm to discuss plans for the experimental program.The DUG meeting agenda will be published by early March and posted on the website.

An updated procedure and directions for conducting the experimental, peroxide-initiated, solution Vinyl Acetate polymerization Round-Robin are posted at the ROUND-ROBIN link on our website.  A procedure for submission of APTAC experimental data has been added.  An emergency relief sizing (ERS) problem based on the experimental data and provided design information has also been added.  Members are urged to participate and make their submissions by the deadlines.

AIChE / DIERS Continuing Education Course:

Course: Emergency Relief System (ERS) Design Using DIERS Technology
Dates: March 11-13, 2013
Instructors: James E. Huff and D. Arthur Shaw
Hotel: Flamingo Las Vegas, 3555 Las Vegas Boulevard South, Las Vegas, NV
See the COURSES link on the AIChE / DIERS website for more details.
Other courses are also available at their respective links.

The MINUTES of the 49th meeting of the DIERS Users Group have not yet been posted. I look forward to greeting all company representatives in Las Vegas, NV in April.

         Harold G. Fisher
   Chair, DIERS Users Group

For More information regarding DIERS

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