The Risk Management Tool Box Blog

Nitrogen Hazard

Graham Marshall - Thursday, June 21, 2012

Although Nitrogen is inert and non-toxic, and actually makes-up 78 per cent of the air we breathe, it can become a hazard - with the potential to cause harm - whenever it becomes concentrated in the atmosphere and replaces the oxygen which we need to sustain life.

Out in the open air at sea-level, oxygen makes-up 20.9 per cent of the air we breathe. 

Legislation in the USA and elsewhere establishes a legal lower threshold limit for oxygen in workplaces of 19.5 per cent by volume. 

If the oxygen level falls much below 19.5 per cent, all sorts of health problems may rapidly develop.

One way in which oxygen can drop to levels which are immediately dangerous to life and health is where Nitrogen is used within a facility.  For example, Nitrogen is frequently used to purge pipes and tanks of potentially flammable atmospheres prior to hot work.

These enclosed environments can then be dangerous if appropriate safe-guards are not in place.

A useful process safety beacon on the hazards of Nitrogen can be found by clicking here.

Post has no comments.
Post a Comment

Captcha Image

Trackback Link
Post has no trackbacks.

Recent Posts


Bio-hazards Driving Safety Risk Assessment OSHA APPEA Electrical hazards Water Corporation Manufacturing Thank God it's Friday Nautronix BP Safety Management Program Office Safety Unconventional Gas Work in Confined Spaces Coal Seam Gas Total Hess Safety Alert Australian OSH Codes of Practice LOTO Pollution prevention SPE HSE Innovation Award Safety "one per-center's" MSDS Mining Slips, trips and falls UK HSE Hot work Save our Seafarers Campaign Raspberry Ketones Scam Energy Model of Hazards Rosedale Abbey WorkSafe WA Safety PowerPoint Presentation Procedure Training Course US OSHA Safe Operating Procedure (SOP) Procedures Health Best bars in the oil patch Natural Hazard Call Centers Salute to Our Hero's Shell Hydraulic Fracturing ("fracking") Hazard Spotting Woodside Hazardous Substances Safety Moment Railway Safety Hazard Awareness OHS Law Occupational Overuse Syndrome Excavations Catostrophic Disaster Oil Spill Response Process Hazard Management Kinetic Energy Isolation Control Safety Information Posters Nanotechnology Emergency Response Ladder Safety Manual handling WA Resources Safety NORM Safety Culture Survey Safe at Home Behaviour-based Safety (BBS) Customer Testimonial Radiation Sources Management of Change CSB Workplace bullying Fire Prevention Marine Safety ENI Australia WMC Resources Newfield Global Harmonized System Job Safety Analysis HSE Leadership Aviation Safety Contract Risk Management Shale Gas Psycho-social Hazards Hospital Safety Rail Safety Unconventional Hydrocarbons Fatigue Management Chevron Situational Awareness Safety Video Road Transport Risk Management Construction Safety Supervision ALARP NOPSEMA Santos Sakhalin Energy Social Responsibility Crane lifts Safety Awards Working at height Drilling PPE TK Shipping NOPSA Walking IFAP BHP Billiton Farm safety Incident Investigation Kellogg Joint Venture Unconventional Oil one per center Safety Conference Toolbox talk Hierarchy of Safety Control Working with explosives Risk Tool Box


Blog / Terms of Use / Site Map / Disclaimer / Risk Management Tool Box 2009. All rights reserved. Web design by Luminosity. E-Commerce by JStores.