atomic number. of the liquid nitrogen or the gas that issues from the evaporating liquid nitrogen. Because nitrogen gas is colorless, odorless and tasteless, it cannot be detected by the human senses and Filling above the bottom of the necktube (or specified maximum level) can result in overflow and Careful procedures are necessary for handling the various compressed gases, cylinders, regulators or valves used to control gas flow, and the piping used to confine gases during flow. If exposed to liquid or cold gas, restore tissue to normal body temperature 98.6F (37C) as rapidly Do not transport liquid nitrogen in wide-mouthed glass Dewars or Dewars not protected with safety tape. For detailed information, please consult the Material Safety Data Sheet (MSDS) on hydrogen. Dilution purging involves combining gaseous nitrogen with the gas needed to be eliminated. Even nonmetallic materials are dangerous to touch at low temperatures. Nitrogen, argon, and helium as cryogenic liquids or WebNitrogen is a chemical element with an atomic number of 7 (it has seven protons in its nucleus). The research workers colleagues survived and could give evidence to the investigating Sheriff Court. Never allow any unprotected part of your body to touch objects cooled by liquid nitrogen. Loose-fitting thermal insulated or leather gloves, long sleeve shirts, and trousers without cuffs should be worn while handling liquid nitrogen. Never leave pressure in a regulator when it is not in use. especially when connecting and disconnecting regulators and lines. There is no safe window where fire and explosion prevention and human life can be simultaneously assured. Gases used maybe: Without proper use and care compressed gas cylinders can explode killing workers and destroying equipment. Oxygen Hazards GHS labelling: Pictograms. Prevent spillage of liquids and damage to unit by securing it in the upright position so If the cylinder is empty, replace the cap and remove it to the empty cylinder storage area. To handle compressed gases safely, you must have a thorough knowledge of the characteristics of the gases you use, including the hazards. Do not enclose liquid nitrogen in a sealed container, as this may result in it bursting or an explosion. Refer to Safety Data Sheet [SDS] for the gas being used for information regarding use and toxicity. This is usually prevented with different fittings for nitrogen and breathing air supplies but inventive employees can find ways around this protection, sometimes without fully appreciating the consequences. Large units are heavy Web70F Freezing Point 15F Solubility Reacts Vapor Pressure 720 mmHg Ionization Potential 9.75 eV Specific Gravity 1.44 (Liquid at 68F) Flash Point NA Upper Explosive Limit NA may diffuse through an open valve, causing contamination and corrosion within the cylinder. Some regulators require washers; this should be checked before the regulator is fitted. Commercially available three-part tag systems may be used for identification and inventory. 2023Stonehouse Process Safety. The benefits of using nitrogen to prevent fire, explosion, contamination, and corrosion are simply too great to contemplate elimination its use. Depending on the design of the Dewar flask, it can be stored for hours or for up to a few weeks. Use a dolly or This requires specialized equipment and techniques. Use a first-in, first-out inventory system to prevent full containers from being stored for long periods of time, Use a suitable hand truck for cylinder movement. Delivery To: present potential hazards: The safety precautions as outlined must be followed to avoid potential injury or damage If we are to use nitrogen gas on plant, we must do everything we can to protect our workers and minimize the risk through a combination of technical (engineering) methods, through operational/ procedural measures and through training. The stream of leaking gas should be directed into an appropriate neutralizing material. nitrogen has evaporated, the temperature inside the unit will rise slowly to ambient. Never leave the valve open when equipment is not in use, even when empty; air and moisture. https://www.thoughtco.com/liquid-nitrogen-facts-608504 (accessed January 18, 2023). Now we understand and the real problem is unveiled. WebThis safety poster, provided by the Compressed Gas Association, provides basic information to aid users in understanding flammable gas hazards and related safety precautions. Nitrogen is an inert gas. 1 H318 2.2. Retrieved from https://www.thoughtco.com/liquid-nitrogen-facts-608504. Rapid warming The next person who draws from it may unknowingly cause an explosion. As you know, nitrogen has an inherent hazard of being a simple asphyxiant, and if not used properly in certain workplace applications, workers may be injured or Wooden or solid metal dipsticks The mixture is then removed through an outlet point situated as far from the gas inlet as possible. So, nitrogen gas is certainly not a poison! Prudent Safety Practices Liquid nitrogen should be handled in well-ventilated areas. For detailed overview of these and Moisture, animal waste, chemicals, strong cleaning agents and other Condensed oxygen in a cold trap may combine with organic material in the trap to create an explosive mixture. At these low temperatures, it is so cold it immediately freezes tissues. When all of the liquid WebLiquid Nitrogen is a colourless, odourless liquid boiling at -196C. Workers should wear safety glasses and face shields when handling and using compressed gases,especially when connecting and disconnecting regulators and lines. CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. WebNitrogen acts as a simple asphyxiant when inhaled. handle containers carefully. Never mix gases in a cylinder. At atmospheric pressure, liquid nitrogen boils at -320F / -196 C. Very small amounts of liquid vaporize into large amounts of gas. Because they did not take the proper precautions when using nitrogen, just like taking precautions not to have any open flame or heat around when using oxygen. Safety and precautions. WebHandling Liquid Nitrogen Contact of liquid nitrogen or any very cold gas with the skin or eyes may cause serious freezing (frostbite) injury. Use tongs to withdraw objects immersed in a cryogenic liquid - Boiling and splashing always occur when charging or filling a warm container with cryogenic liquid or when inserting objects into these liquids. Nitrogen, argon, and helium as cryogenic liquids or cold gases, and carbon dioxide as a cold gas may cause severe frostbite to the skin or eyes. WebHazard statements (GHS-US) : H280 - Contains gas under pressure; may explode if heated Precautionary statements (GHS-US) : P202 - Do not handle until all safety precautions have been read and understood P271 - Use only outdoors or in a well-ventilated area P304+P340 - If inhaled: Remove person to fresh air and keep comfortable for breathing If leaking from cylinder or its valve, contact your supplier. The safety precautions as outlined must be followed to avoid potential injury or damage which could result from Use a phase separator or special filling funnel to prevent splashing and spilling when transferring Never insert an object (e.g., wrench,screwdriver, pry bar, etc.) Nitrogen is non-toxic, odorless, and colorless. 18, 2022, thoughtco.com/liquid-nitrogen-facts-608504. Handle the liquid slowly to minimize boiling and splashing. All of these example numbers can be affected by process conditions such as temperature, pressure, turbulence. These cryogenic liquid containers are generally designed to operate with little or no internal WebNitrogen is a crucial ingredient of life since it is a constituent of DNA and as such is part of the genetic code. Nitrogen was first liquefied on April 15, 1883, by Polish physicistsZygmunt Wrblewski and Karol Olszewski. Use only approved containers. Tipping the container or laying it on its side can cause spillage of liquid nitrogen. Consciousness is lost and death will likely follow. more gases, visit our Material Safety Data Sheets (MSDS). Never touch non-insulated vessels containing cryogenic liquids. If breathing is difficult, administer oxygen. Never use oxygen as a substitute as a compressed air to run pneumatic tools, in oil heating burners, to start internal combustion engines, to blow out pipelines, or to create pressure for ventilation. Smoking can cause a fire or explosion. Do not attempt to dispose of residual or unused quantities. A third and fourth colleague entered the room; they had to leave for fresh air and were unable to pull the victims clear. Liquid nitrogen containers may accumulate oxygen that is condensed from the air. Personnel monitors can be obtained that indicate the presence of low oxygen concentrations. Cotton clothing is recommended for use to prevent static buildup. Pour the liquid slowly on gravel They will only provide short-term protection from accidental contact with the liquid. Fasten the regulatorto the cylinderand before you open the cylindervalve, turn anddirect the regulator away from yourself and others. As the liquid evaporates, the resulting gas tends to displace the normal air from the area. Do not refill a cylinder; mixing of residual gases in a confined area may cause a dangerous reaction. Shipment of compressed gas cylinders that have been filled without the owners consent is a violation of federal law [49 CFR 173.301(e)]. Nitrogen is the earths most plentiful gas. Nitrogen Cycle Cylinders and Dewars should not be filled to more than 80% of capacity, since expansion of gases during warming may cause excessive pressure buildup. Storage areas must be well-ventilated, cool, dry, and free from corrosive materials. ________________________________________________________________________________, _____________________________________________________________________________________, ___________________________________________________________________________________, _______________________________________________________________________________________________________. Tip: Nitrogen Tank and Gauge Precautions. The following acute (short-term) health effects may occur immediately or shortly after exposure to Nitrogen: * Contact with liquefiedNitrogencan cause frostbite. * Exposure to very high levels of pure Nitrogencan cause you to feel dizzy and lightheaded, and replaces Oxygenin the air causing loss of consciousness and death. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. related safety precautions. If you experience a barrier that affects your ability to access content on this page, let us know via the. Although much of the fixation of nitrogen occurs biologically, such as with Rutherford's mouse, nitrogen can be fixed by lightning as well. Exposure to oxygen-deficient atmosphere (<19.5%) may cause Read all labels on containers of liquid or gaseous oxygen, and observe all safety precautions on the label. Handle empty cylinders as carefully as full ones; residual pressure can be dangerous. A. Regulations, standards and guidelines for explosion protection. Click here for a PDF version of this content. the container and any materials stored in it. In fact, researchers have established that gas stove tops produce considerable nitrogen dioxide when they're in use. Approximately 78% of the air we breathe is nitrogen, (N2). Copyright Ted Pella, Inc., 1996-2023. If possible, remove nitrogen cylinders from fire area or cool with water. Use water or mild detergent for damaged by an exposure to the cold gas which would be too brief to affect the skin of the Cylinders can also become flying projectiles when cylinder valves are damaged or broken off. Back off the pressure adjusting screw of the regulator to release spring force before opening the. Hazard statements. We use cookies necessary for the functioning and optimization of our website. Training should be directly documented in the researchers lab notebook. Such training should certainly include proper use of ventilation, retrieval, air monitoring, and air supply systems, safe practices for confined space entry and rescue, precautions to take when working around confined areas, dangers of nitrogen enriched atmosphere and preventing mix-ups between breathing air and nitrogen and implementing good hazard communication [ref 2]. If the cylinder is dropped on a hard surface it can cause an explosion. Cylinders must be stored where they are protected from the ground to prevent rusting. Close the cylinder valve and release all pressure before removing the regulator from the cylinder. Noncombustible and nontoxic. Never dispose of liquid nitrogen in confined areas or places where others may enter. Disposal of liquid nitrogen should be done outdoors in a safe place. The top of the funnel should be partly covered to reduce should be worn outside the shoes. Any kind of canvas shoes should be avoided because a liquid nitrogen spill can be taken up by Simultaneously, nitrogen gas is released from the other nitrogen-saturated zeolite bed, by reducing the chamber operating pressure and diverting part of the oxygen gas from the producer bed through it, in the reverse direction of flow. Indeed, in our work as process safety consultants, we routinely recommend the use of nitrogen as a way of preventing fire and explosions in process vessels. Never attempt to lift a cylinder by its valve protection cap. Sorry, you have already included your one time free sample in this order. Open the valve slowly and only with the proper regulator in place. Liquid nitrogen is a form of the element nitrogen that's cold enough to exist in a liquid state and is used for many cooling and cryogenic applications. 122 Grand Ave. Court The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. Adding large quantities of nitrogen to the air reduces the relative amount of oxygen, which may result in an asphyxiation risk. containers, it is advisable to wear high-top shoes. Use only the loose-fitting necktube core supplied or one of the approved accessories It is relatively inert and is not flammable. Liquid nitrogen should be handled in well-ventilated areas. Oxygen Trousers (which should be cuffless if possible) Escaping hydrogen cannot be detected by sight, smell, or taste. This booklet can be used as a guideline for the safe use of compressed gas. Monitoring should be continuous because concentrations can change over time. WebFor other precautions in using nitrogen, see section 16. Where breathing air is supplied, there have been incidents where this has been mixed up with nitrogen. Precautions: - When opening nitrogen cylinders or pipelines lines, insure that you are in a well ventilated space. The transportation of compressed gas cylinders in automobiles or in closed-body vehicles can present serious hazards and should be discouraged. WebInhalation: Simple asphyxiant. Evacuate all personnel from the affected area. | another. On each day of training, both trainer and trainee should sign the lab notebook. 7. Nitrogen gas is slightly lighter than air when it reaches. Oxidizing material. Your organization should have a system for safe recovery of workers who have been affected by reduced oxygen. Do not direct water spray at the container vent. The Handling and use: Cylinders must always be used in an upright position, unless stated otherwise. Contact information and areas of expertise can be foundon theContact Uspage. How is Static Electricity Generated in My Facility? Nitrogen gas is colorless and odorless so you cant see it and cant smell it and it can have what are at first very subtle effects on our bodies: Limiting oxygen concentration to prevent combustion/ explosion is a parameter that is measured in the laboratory but to illustrate the overall problem better, lets look at a little data. Natural or mechanical to prevent oxygen-deficient atmospheres under 19.5% oxygen. Bleed off Incompatibilities & Reactivities Nitrogen is nontoxic, but may cause suffocation by displacing the oxygen in air. Can cause rapid suffocation. Nitrogen is a simple asphyxiant. Nitrogen cylinders contain approximately 2200-2400 PSI of pressure, that kind of force can do some serious damage to a person or property. The Global Safety Eyewear Market size is expected to reach $4.8 billion by 2028, rising at a market growth of 4.5% CAGR during the forecast period. Do not place these units in closed vehicles where the nitrogen gas that is continuously vented from unit spaces (displacing oxygen). There are two important properties of liquid nitrogen that Nitrogen is used as a purge gas in pipelines because of its inertness or unreactivity. Helmenstine, Anne Marie, Ph.D. "Liquid Nitrogen Facts and Safety." Do not allow storage area temperature to exceed 125F (52C). Identification ALWAYS READ THE LABEL. Always place valve protectors on gas cylinders when the cylinders are not connected for use. Indeed, liquid nitrogen burns could be treated as frostbite. Nitrogen gas can cause suffocation without warning. These compounds are all part of the nitrogen cycle and both are interconnected. liquid nitrogen dewar but at the same time, make sure that the user is also While it freezes tissues, the real issue is the rapid expansion from a liquid into a gas, which ruptures the gastrointestinal tract. Use liquid nitrogen in a well-ventilated area. prevent injuries. At normal pressure, nitrogen becomes a liquid below 195.8 C or 320.4 F and a solid ________________________________________________________________________________, _____________________________________________________________________________________, ___________________________________________________________________________________, _______________________________________________________________________________________________________. If an outlet valve becomes clogged with ice, thaw it with warm water (if the gas is not water reactive), applied only to the valve. The liquid-to-gas expansion ratio of nitrogen is 1:694, which means liquid nitrogen boils to fill a volume with nitrogen gas very quickly. Why is this the case? In this section we present useful information to protect the life of your new Label all empty cylinders so that everyone will know their status. Gas identification should be stenciled or stamped on the cylinder or a label. Review the reagent-specific safety data sheets (SDSs). Breathing air supply can also be monitored for composition. cylinder valves should be opened all of the way during use. Regulators can become bullets that tear through workers if safety precautions are not taken. At 14% oxygen levels, we become very tired and emotionally upset, displaying faulty coordination and poor judgment. Drinking liquid nitrogen can be lethal. Escape packs can also be carried. have been, in immediate contact with liquid nitrogen. When spilled on a surface Use soapy water. This is a short tip but a very important one. If the gas is a corrosive, remove cylinder to an isolated, well-ventilated area. Make sure the cylinder is secured to the cart before moving it. Check the unit periodically to be sure that venting is not restricted by Safety shoes are recommended when handling cylinders. Gas cylinders must be secured at all times to prevent tipping. Nitrogen is an inert gas meaning it doesn't chemically react with other gases and it isn't toxic. But breathing pure nitrogen is deadly. That's because the gas displaces oxygen in the lungs. Unconsciousness can occur within one or two breaths, according to the U.S. Chemical Safety and Hazard Investigation Board. Nitrogen can occur in rivers and streams, lakes, and coastal waters in several forms including ammonia (NH 3 ), nitrates (NO 3 ) and nitrites (NO 2 ). Nitrogen cylinderscontain approximately 2200-2400 PSI of pressure, that kind of force can do some serious damage to a person or property. Keep cylinders and their valves free from oil and grease. Delicate tissue, such as that of the eyes, can be changes and extreme temperature differences encountered in working with liquid nitrogen. Do not touch frosted pipes or valves. Cover and insulate skin to avoid exposure. Exposure to oxygen-deficient atmosphere (<19.5%) may cause dizziness, drowsiness, nausea, vomiting, excess salivation, diminished mental alertness, loss of consciousness and death. Protect your eyes with a face shield or safety goggles (safety glasses without side shields do Check out the link to my YouTube channel for more tips, tricks, and troubleshooting videos and check out the The HVAC Know It All podcast here or on your favourite podcast app. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. PRECAUTIONS TO BE TAKEN IN STORAGE: vehicle can present serious safety hazards. Liquid Nitrogen Facts and Safety. HVAC KNOW IT ALL As the nitrogen evaporates, there's a risk of violent oxidation of organic matter. Detected by sight, smell, or taste and a solid ________________________________________________________________________________, _____________________________________________________________________________________ ___________________________________________________________________________________... By its valve protection cap thorough knowledge of the liquid slowly on they... And corrosion are simply too great to contemplate elimination its use presence of oxygen... Or cool with water fact, researchers have established that gas stove tops produce considerable nitrogen when! Side can cause spillage of liquid nitrogen following acute ( short-term ) health effects may occur immediately shortly. Which may result in an upright position, unless stated otherwise place valve protectors gas! Biomedical sciences and is not flammable understand and the real problem is unveiled one time free sample in this.. That 's because the gas needed to be sure that venting is not in use also be monitored for.! ; mixing of residual or unused quantities valves should be cuffless if possible ) Escaping hydrogen not! Surface it can be changes and extreme temperature differences encountered in working liquid! Your ability to access content on this page, let us know via the nonmetallic... Msds ) cotton clothing is recommended for use to prevent oxygen-deficient atmospheres under 19.5 oxygen! Been mixed up with nitrogen gas is certainly not a poison are part! Displacing oxygen ) Section 508 compliance ( accessibility ) on hydrogen if possible remove. The following acute ( short-term ) health effects may occur immediately or after... Always be used for information regarding use and toxicity room ; they had to leave for fresh air and.... An upright position, unless stated otherwise the Material Safety Data Sheet ( MSDS ) on federal... At these low temperatures gaseous nitrogen with the liquid amount of oxygen, which means liquid nitrogen Facts Safety. Thermal insulated or leather gloves, long sleeve shirts, and consultant, you have included! Use only the loose-fitting necktube core supplied or one of the nitrogen evaporates, there have been in. And both are interconnected to ambient the regulator is fitted for a PDF version of content... 78 % of the characteristics of the funnel should be directed into an appropriate neutralizing Material and! To be taken in storage: vehicle can present serious hazards and should be stenciled stamped... C or 320.4 F and a solid ________________________________________________________________________________, _____________________________________________________________________________________, ___________________________________________________________________________________,.... Fire and explosion prevention and human life can be foundon theContact Uspage SDSs ) and.. Is nitrogen, ( N2 ) recovery of workers who have been, in contact..., remove cylinder to an isolated, well-ventilated area incidents where this has mixed! Lighter than air when it reaches unit spaces ( displacing oxygen ) recommended when handling using... Also be monitored for composition nitrogen cylinderscontain approximately 2200-2400 PSI of pressure, that kind of force can some! A hard surface it can cause spillage of liquid nitrogen in a safe.. From accidental contact with liquid nitrogen boils to fill a volume with nitrogen gas that issues from the cylinder secured! Secured at all times to prevent tipping asphyxiation risk considerable nitrogen dioxide when 're! Be handled in well-ventilated areas that gas stove tops produce considerable nitrogen dioxide when they in! Outside the shoes not allow storage area temperature to exceed 125F ( 52C ) stenciled or stamped on design. Loose-Fitting necktube core supplied or one of the nitrogen cycle and both are interconnected human life be! Not direct water spray at the container vent ) on other federal or private.... Or unreactivity a third and fourth colleague entered the room ; they had to leave fresh! 508 compliance ( accessibility ) on other federal or private website have established that stove! ) Escaping hydrogen can not attest to the U.S. Chemical Safety and Hazard Investigation Board amounts gas... Is supplied, there have been affected by process conditions such as temperature pressure! A well ventilated space cold it immediately freezes tissues, remove cylinder to an isolated, well-ventilated area corrosive... Or two breaths, according to the air the unit periodically to be sure that venting is not responsible Section! Helmenstine, Anne Marie, Ph.D. `` liquid nitrogen in a safe place, to... For composition to prevent oxygen-deficient atmospheres under 19.5 % oxygen levels, we become very and! Sheet ( MSDS ) allow storage area temperature to exceed 125F ( 52C ) suffocation by displacing the in., _____________________________________________________________________________________, ___________________________________________________________________________________, _______________________________________________________________________________________________________ conditions such as temperature, pressure, nitrogen becomes liquid... Lines, insure that you are in a confined area nitrogen gas safety precautions cause by. Your ability to access content on this page, let us know via the are too. Never allow any unprotected part of the air we breathe is nitrogen, ( )... Keep cylinders and their valves free from corrosive materials the pressure adjusting screw the! Webliquid nitrogen is 1:694, which means liquid nitrogen ) Escaping hydrogen can not attest to the air we is. In pipelines because of its inertness or unreactivity or this requires specialized equipment and techniques ability to access content this... Cylinders from fire area or cool with water the air reduces the relative amount of oxygen which... Identification and inventory the investigating Sheriff nitrogen gas safety precautions fill a volume with nitrogen workers if Safety precautions are not.! Important one the cylinder is secured to the investigating Sheriff Court regulator when reaches. With water especially when connecting and disconnecting regulators and lines two important properties of liquid nitrogen could! Continuous because concentrations can change over time be directed into an appropriate neutralizing Material displacing the in. Practices liquid nitrogen boils to fill a volume with nitrogen gas is slightly lighter than air it. Direct water spray at the container or laying it on its side can cause an explosion a non-federal.... Boils at -320F / -196 C. very small amounts of liquid nitrogen burns could be as. Needed to be taken nitrogen gas safety precautions storage: vehicle can present serious Safety hazards their free... Displacing the oxygen in the lungs Anne Marie, Ph.D. `` liquid nitrogen may. Dioxide when they 're in use, including the hazards gas identification should be outside! Incompatibilities & Reactivities nitrogen is a corrosive, remove nitrogen cylinders or pipelines,! Leave the valve slowly and only with the gas displaces oxygen in air a Ph.D. in sciences., we become very tired and emotionally upset, displaying faulty coordination and poor judgment training, trainer. ( SDSs ) poor judgment be discouraged displace the normal air nitrogen gas safety precautions area. Oxygen levels, we become very tired and emotionally upset, displaying coordination...: * contact with liquid nitrogen boils at -320F / -196 C. very small amounts of gas and use cylinders! A regulator when it reaches below 195.8 C or 320.4 F and a solid ________________________________________________________________________________, _____________________________________________________________________________________ ___________________________________________________________________________________! ( 52C ) all as the nitrogen cycle and both are interconnected the air reduces relative. Accessed January 18, 2023 ) information regarding use and care compressed gas cotton clothing is recommended for use prevent! See Section 16 that you are in a confined area may cause a dangerous reaction and care compressed cylinders... Psi of pressure, liquid nitrogen / -196 C. very small amounts of gas may. And using compressed gases safely, you have already included your one time sample. Yourself and others this requires specialized equipment and techniques third and fourth colleague entered the room ; had. Rise slowly to minimize boiling and splashing, see Section 16 place these in... That indicate the presence of low oxygen concentrations allow storage area temperature to 125F! Without cuffs should be worn while handling liquid nitrogen Facts and Safety., turbulence be simultaneously assured not! Facts and Safety. from unit spaces ( displacing oxygen ) for up a. Involves combining gaseous nitrogen with the gas that is condensed from the area slowly gravel. Of nitrogen to prevent fire, explosion, contamination, and corrosion are simply too great to contemplate elimination use. Workers colleagues survived and could give evidence to the air body to touch at low temperatures violent oxidation organic! During use or private website others may enter water spray at the container vent to a or. Is so cold it immediately freezes tissues unused quantities these low temperatures the oxygen in.... Worn while handling liquid nitrogen a sealed container, as this may result in an position! Or laying it on its side can cause an explosion person who draws from it may unknowingly cause explosion! Opening nitrogen cylinders contain approximately 2200-2400 PSI of pressure, liquid nitrogen the... January 18, 2023 ) as this may result in an upright position unless... The top of the regulator to release spring force before opening the a very important one cold! If Safety precautions are not taken other federal or private website the next person draws. To lift a cylinder ; mixing of residual or unused quantities day of,. Residual or unused quantities a dolly or this requires specialized equipment and techniques nitrogen or the gas oxygen. Make sure the cylinder is dropped on a hard surface it can foundon! Areas or places where others may enter available three-part tag systems may be as. Surface it can be stored where they are protected from the air in the lungs unit will rise to., insure that you are in a well ventilated space systems may be used as a for... Life can be obtained that indicate the presence of low oxygen concentrations for PDF! Draws from it may unknowingly cause an explosion acute ( short-term ) health effects may occur or. And destroying equipment the accuracy of a non-federal website where they are protected from the air be handled well-ventilated...

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