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

10/13/15 - 10/15/15

South Houston
11/10/15 - 11/12/15

New Orleans





Environmental Management Systems Workshops

Albuquerque, NM
05/12/15 - 05/15/15

Galveston, TX
07/28/15 - 07/31/15

Austin, TX
09/22/15 - 09/25/15

Arlington, TX
11/17/15 - 11/20/15



Case Study Database

           Add Story    |    Search Case Studies    |   


Sony Microelectronics

Year Submitted: 2003

Process: Chemical Storage and Delivery

Industry: Electronics Manufacturing

Wastes Reduced: Gas Cylinders

Substance: Gases

Equipment: Gas Distribution

Location: San Antonio TX

No. of employees: 800

Contact: Lee Malden

Phone: (210) 647-6721


Tanks of semiconductor grade gases (examples include Nitrogen Trifluoride, Sulfur Hexafluoride and Diborane) are changed out once certain pressure or weight limits were detected. Set limits are in place to insure that gas cylinders do not run out in the middle of a production run, and to avoid any possible contaminates released by a nearly empty tank. This project sought to reduce change out level to as low of limits as practical.

P2 Application:

A team was formed from environmental, quality control, purchasing and production personnel to set new limits and procedures for tank change out. Meetings were also held with the gas manufacturer (Matheson Gas Products) to discuss recommendations of the team for cylinder limits. Some gases were changed to larger cylinders and higher fill limits to also provide a way of reducing the amount of gas that is wasted and reducing the number of cylinder change outs.

Environmental Benefits:

The number of gas cylinders used by two fabrication units was reduced by over 200 per year

Details of Reductions

Additional Information :

The reduction in cylinder use saved Sony over $180,000 in reduced purchases. Reduction in change outs also resulted in the reduction of potential contamination when lines are open. This reduced technician time, improves wafer quality and reduces handling risks

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
michael kors online outlet michael kors factory outlet online store michael kors outlet canada michael kors outlet online michael kors factory outlet fake michael kors bags cheap mk bags michael kors handbags clearance wholesale jordans jordans outlet cheap jordans china cheap authentic jordans cheap real jordans cheap jordans free shipping cheap jordans online discount jordans cheap jordans from china cheap air jordans louboutin pas cher louboutin soldes louboutin pas cher louboutin soldes air max pas cher air max femme pas cher air max pas cher roshe run pas cher air max one pas cher air max femme pas cher sac michael kors pas cher sac michael kors pas cher sac longchamp pas cher longchamp soldes sac longchamp pas cher longchamp pas cher moncler outlet moncler outlet moncler outlet