Underground fire water pipeline for acid polluted soil
Underground fire water pipeline for acid polluted soil
(OP)
Our underground fire water pipeline is built some 27years ago on the site of three nitric acid plants. Due to acid spillage caused by leaky process pipeline over many years, the soil on the site is found to be heavily polluted by acid.
Many leak points found on the fire water pipeline these days. At present we are considering two options.
1)Replacing the pipeline with acid resistant material
2)Installing the pipeline above ground.
Regarding the later option, it caused controversy among coworkers that the fire water pipelines could be damaged by strong flame in the event of severe fire or explosion.
In this regard, please advise me on the options we are considering.
Many thanks in advance.
Many leak points found on the fire water pipeline these days. At present we are considering two options.
1)Replacing the pipeline with acid resistant material
2)Installing the pipeline above ground.
Regarding the later option, it caused controversy among coworkers that the fire water pipelines could be damaged by strong flame in the event of severe fire or explosion.
In this regard, please advise me on the options we are considering.
Many thanks in advance.





RE: Underground fire water pipeline for acid polluted soil
RGS
RE: Underground fire water pipeline for acid polluted soil
Indian code says the hydrant mains should be located 5meters away from the work areas along with stand posts but risers can be taken in. This way you can reduce damage to the hydrant system.
Regards,
RE: Underground fire water pipeline for acid polluted soil
RE: Underground fire water pipeline for acid polluted soil
Believe you are in Korea, so it would be a good idea (& may be required by code) to bury the lines below maximum frost depth.
RE: Underground fire water pipeline for acid polluted soil
You may even need to coat inside and outside if you use an metallic material. That is why some user (where acceptable by code) skip the hassle and use FRP or Plastic pipe.
RGS
RE: Underground fire water pipeline for acid polluted soil
However, considering that the existing piping has lasted 27 years and that the mean soil temperature is probably ~10oC (alleviates SCC problems), w/o further evidence, I would still choose 304L.
panteo,
Any further description or analyses of the soil and/or firefighting water?