Pressure Vessel Rupture Caused Natural Gas Explosion

A Williams Northwest Pipeline spokesperson confirms a pressure vessel rupture caused the natural gas explosion that injured five employees and people to evacuate their homes in Plymouth, WA on March 31st.

During a community meeting residents of Plymouth were told the company is still trying to figure out what caused that vessel to rupture.

That vessel removes carbon dioxcide from the gas before it's liquefied.

When that explosion took took place, large chunks of shrapnel were sent flying into the air, through metal buildings, and some puncturing on the liquified natural gas tanks.

People living and working within a two-mile radius of the plant were asked to leave their homes and get to a safer area to avoid a potential explosion.

Williams Company is the energy company that owns the Northwest Pipeline.

That pipeline stretches 3,900 miles across Washington, Oregon, Idaho, Wyoming, Utah and Colorado.

The Washington Utilities and Transpiration Commission has been regulating the Plymouth plant since 2001.

A spokesperson said the facility received clean marks on its latest inspection.

Williams also owns a pipleine on Sauvie Island, on the border of Oregon and Washington.

There have been three leaks at that pipeline in the past few months and an evacuation in January.

The leaks at Sauvie Island were caused by problems with the regulator valve.

Experts said liquid natural gas is not as dangerous as many people think.

In a liquid state the natural gas can't ignite, the biggest concern would be if any gas remains trapped.