November 2008

Special Report: Plant Safety and Environment

What you should know about liquid thermal expansion

Decision flowchart aids in correct thermal relief valve requirements

Norouzi, S., Sazeh Consultants, Engineering and Construction; Rahimi Mofrad, S., Petrofac Engineering & Constructions

Pipe rupture due to thermal expansion of blocked liquid between process valves may cause limiting effects, but it could  produce unacceptable consequences, especially with dangerous liquids. Most references provide proper guidelines regarding thermal expansion relief valve requirements; however, there is no straight forward method to specify when a thermal relief valve (TRV) is required. Furthermore, in the absence of a step-wise approach, sometimes the TRV is provided based on the fluid's volume or nature (hazardous or flammability) while checking thermal expansion's initial requirements has been mistakenly neglected. TRV requirement. Fig. 1 is a simple flowchart representing questio

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.

2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain IMMEDIATE ACCESS to the current issue as well as to 3 articles from the HP archives per month. $399 for an annual subscription.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain IMMEDIATE ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,695 for an annual subscription.  For information about group rates or multi-year terms, contact J'Nette Davis-Nichols at  jnette.davis-nichols@gulfpub.com or +1 713.520.4426.

Related Articles

From the Archive

Comments