Nitrogen Inerting for Mine Seals

On October 20, 2008, MSHA issued the Final Rule for submitting a mine seal design for approval. The Final Rule focuses on the strength, construction, maintenance, and repair of mine seals and also includes requirements for sampling and controlling the atmospheres behind seals. Under the Final Rule if a mine operator monitors and maintains the atmosphere of the sealed area as inert, seals must be designed to withstand 50 psi overpressure. If a mine operator does not monitor and maintain the atmosphere of the sealed area as inert, seals must be designed to withstand 120 psi overpressure or greater. The Final Rule does not require mine operators to upgrade seals constructed prior to May 2, 2007; however the atmosphere behind these seals must be continuously monitored and kept inert. Nitrogen generators from On Site Gas Systems provide a safe and economical solution to the mining industry to keep the atmosphere behind sealed areas inert; either from a nearby underground location or from above ground. We have the expertise and experience to help you find the best nitrogen generation solution.

Economical emergency nitrogen generator rental within 24 hours available for when you need nitrogen ASAP. On Site’s experienced field personnel are always ready.

Recommended Nitrogen Systems for Mine Seal Inerting

Engineered Nitrogen Generation Systems
On Site Gas has decades of experience in the development of engineered solutions and turnkey systems for nitrogen generation.

Portable Nitrogen Generator Container Systems
We design and build our nitrogen-generating systems to fit a steel ISO container or similar structure for ease and security of shipment.

Nitrogen Membrane Generator
The nitrogen membrane generator is a complete turnkey system. It arrives at your location designed and built to your specifications and you put it online.

Nitrogen Generator Membrane Trailer Systems
On Site Gas is one of the top manufacturers of mobile nitrogen generator systems worldwide – available in flows up to 90,000 SCFH and purity as high as 99.9%.

PSA Nitrogen Generator
On Site’s PSA nitrogen generator technology assures quick returns on your investment and stable year-to-year gas costs.


Required Gas: Nitrogen
Purity Range: 95 – 99%