Posted on 12/02/2021 5:24:53 PM PST by Jyotishi
What it does is pretty simple. It's a check valve system that if pressure is lost it stops a back flow of water from leaving the building or contaminating the water system
. It got to be a huge issue in multi-story buildings when utility pressure was lost that it would actually cause a vacuum on the water lines to happen. Now if let's say someone is filling up a mop bucket with detergent and leaves the hose in the bucket and water pressure loss occurs the detergent isn't sucked into the building and utilities piping system.
In a commercial/industrial environment were for example a large volume tank is being cleaned and this happens it stops that from doing contamination. That should be included as a starting place. They are supposed to be tested periodically but nothing is fool proof. These devices can be small or large depending on need and application.
I was born in 1954. I doubt they will ever raise the Arizona, since it’s a WW2 Memorial and a grave site- over 1000 men died and are still entombed in the wreckage. In a few days, it will be 80 years. I wouldn’t think that the oil still leaking from the Arizona would have much impact on the local environment.
It will be interesting to see what they will eventually find as the cause.
Navy confirms petroleum products found in Red Hill Well, which has been isolated since Nov. 28
December 2, 2021
The Arizona is leaking into the ocean.
The water system draws from aquifers on land, so the likely contamination is from leaks at the Navy bases fuel storage tanks.
Yes been there twice and seen the sheen of oil on the water...No if the Japanese had launched a 3rd wave and targeted the fuel storage for the Pacific fleet the story would have been somewhat different but same results.
Sorry. Should be Mekong Delta.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.