Special Guest - Frank Zakar of the National Transportation Safety Board, Washington, D.C.

When:  Apr 8, 2024 from 18:00 to 20:00 (MT)
Associated with  Phoenix Chapter Community

Agenda - Guest Speaker, Frank Zakar of the National Transportation Safety Board speaking on the Natural Gas Pipeline Rupture in Coolidge, Arizona (2021)

April 8th, 6:00 PM to 8:00 PM at Arizona State University. See details below.


On August 15, 2021, a 30-inch-diameter natural gas transmission pipeline owned by Kinder Morgan, Inc, ruptured in Coolidge, Arizona. The rupture resulted in release of gas vapor that ignited and caused an explosion, destroying a farmhouse about 541 feet away, killing two of three occupants and seriously injuring the other. A 47-foot segment of the pipe was ejected from the pipeline leaving a crater in the ground. The pipeline was coated with two layers of spiral wrap tape as the primary means of corrosion protection and supplemented with an impressed current cathodic protection system. 

The NTSB determined that the accident was caused by tented tape wrap leading to stress corrosion cracking, a fracture at a longitudinal seam weld, and subsequent rupture of the pipe. Contributing to the rupture was Kinder Morgan’s failure to record the correct coating type used for this segment of pipeline, leading to a risk assessment that did not fully identify the risk of stress corrosion cracking. The program will define the function of the NTSB and provide detailed information of the metallurgical examination.


Frank Zakar is a Senior Metallurgist at the Materials Laboratory Division of the National Transportation Safety Board, Washington, D.C., and has been working at this agency since 1988. He performs numerous failure analysis cases per year, all of which some time or another, covered all modes of transportation investigated by the Safety Board. Mr. Zakar received his Bachelor of Science degree in Metallurgical Engineering from Polytechnic Institute of New York (merged into New York University), and Master of Science degree in Metallurgy from Stevens Institute of Technology. Prior to his career with the Safety Board, he worked for Lockheed Martin Corporation, as a metallurgical engineer, where he diagnosed material failures related to aircraft, surface and marine vehicles.

**Location - Arizona State University Materials Engineering Lab, See detail map for parking and campus location. Please allow ample time to park and walk. 

**Cost - Free to students. $20.00 non-students (ASM Members and non-members) to be paid by cash or check (payable to ASM Phoenix)

**Pizza will be served

**Please respond to Tracy Lenz directly by email, tlenzreax@cox.net. Please call or text with any questions, 480-688-0338. We are looking forward to seeing you for this excellent presentation. 

**Park in Visitor Parking on 1100 S. Rural Rd, Tempe.

Exit from NW corner (upper left) and walk west (left) on  Orange Mall to ECB  (just before Palm Walk).


Arizona State University
Visitor Parking on 1100 S. Rural Rd, Tempe - see map
Tempe, AZ 85281
Event Image


Tracy Lenz