Zero Waste Logo The Zero Wate Network the University of Texas at Arlington Center for Environmental Excellence Environmental Training Institute Logo  

Join Us on:

Social Network Nav Bar

Lean and P2 Workshops

Houston (one day)
October 5, 2016

November 8-10, 2016

December 6-8, 2016

May 31 - June 2, 2017




Environmental Management Systems Workshops

Oklahoma City, Ok
09/27/16 - 09/30/16



Case Study Database

           Add Story    |    Search Case Studies    |   


Texas Eastman

Year Submitted: 2003

Process: Chemical Storage and Delivery

Industry: Chemical Manufacturing

Wastes Reduced: VOC Emissions

Substance: Aldehyde

Equipment: Nitrogen Blanket

Location: Longview, Harrison County TX

No. of employees: 2700

Contact: Glenn Phillips

Phone: (903) 237-5356


Texas Eastman ships propionaldehyde and butyraldehyde via rail car to Tennessee Eastman. The cars at Tennessee Eastman are unloaded under a pressured nitrogen blanket, then vented to the atmosphere prior to a visual inspection to make sure the cars are empty. Texas Eastman employees were concerned that oxygen entering the cars during inspection would affect product quality. The rail cars were washed and repurged before being reloaded with nitrogen. Personnel from Texas Eastman Materials Handling Department and Tennessee Eastman's Acid Division Materials Handling determined that upgrading tank level instrumentation eliminated the need for visual inspection. The cars were returned to Texas with nitrogen pressure, then depressured through a flare and loaded with aldehyde without washing and repurging.

Environmental Benefits:

All the aldehyde emissions from unloading are eliminated at Tennessee Eastman. The vapors in the rail car are burned in the Texas Eastman flare system, an environmentally-responsible action.

Details of Reductions

Additional Information :

There was an annual cost savings of $95,000 resulting from elimination of washing (which included two railroad switches per rail car), repurging the car and improved turn-around time.

Source: TCEQ

SHEP Shield
Health and

ERP Shield

ESP Shield

EMP Shield

Attend a workshop and
earn credits toward a
Professional Certification



The Zero Waste Network is one of eight Pollution Prevention Resource Exchange P2RxCenters , serving as a national network of regional information centers: NEWMOA (Northeast), WRRC (Southeast), GLRPPR (Great Lakes), ZeroWasteNet (Southwest), P2RIC (Plains), Peaks to Prairies (Mountain), WSPPN (Pacific Southwest), PPRC (Northwest). We are a proud member of the National Pollution Prevention Roundtable.

National P2 Roundtable Logo