Capturing gas fumes at the pump

Funny, some say, wrinkling up the nose, there's no gasoline smell now when you fill up in many California cities. And in Washington, D.C., too. That's because these are the only two areas so far in the United States where air- pollution-control districts have ordered the use of vapor-recovery nozzles in gas stations to help meet standards set by the federal Clean Air Act.

The new nozzles, larger, heavier, and with tank-cap collars, are connected to gas pumps by two hoses under most systems in use. The object of the new technique is to catch the air- spoiling hydrocarbon vapor within the fuel transfer system. Instead of forming polluting compounds in the atmosphere, the vapors are now forced back (under various methods) into storage tanks. There is some benefit here to the dispenser since vapor inside the tanks tends to reduce evaporation.

Los Angeles air-district officials claim the vapor-recovery systems are expected to be one of the major causes of that locale's air improvement, trapping an estimated 10 percent of the former "loose" hydrocarbons emitted by stationary sources. Of the several systems in use in California, each can cost the medium-size gas station about $15,000 for installation. Engineers testing all types of systems in use in the South Coast Air District reported captu re of about 95 percent of the vapor normally emitted.

About these ads
Sponsored Content by LockerDome

We want to hear, did we miss an angle we should have covered? Should we come back to this topic? Or just give us a rating for this story. We want to hear from you.

Loading...

Loading...

Loading...

Save for later

Save
Cancel

Saved ( of items)

This item has been saved to read later from any device.
Access saved items through your user name at the top of the page.

View Saved Items

OK

Failed to save

You reached the limit of 20 saved items.
Please visit following link to manage you saved items.

View Saved Items

OK

Failed to save

You have already saved this item.

View Saved Items

OK