Level 1 systems are those in which the interruption of supply would place patients at imminent risk of morbidity or mortality.
Level 1 systems are those in which the interruption of supply would place patients at imminent risk of morbidity or mortality.
Level 2 systems are those in which interruption of supply would place patients at manageable risk of morbidity or mortality.
Level 3 systems are those that would terminate procedures, but not place patients at risk of morbidity or mortality. Most healthcare facilities fall under level 1 or level 2. Level 3 typically covers clinics, dental and doctors offices, or treatment facilities with limited patient care services.
Comparatively, the equipment and installation requirements of a medical gas account tend to be a bit more expensive than a similarly- sized installation of an industrial account. The requirements imposed by NFPA 99 (ed), NFPA 55 (now ed), CGA M-1 and applicable ASSE standards will be reviewed by the local Authority Having Jurisdiction (AHJ). Only that person can sign off on the installation.
That said; if the equipment is part of a lease package, it could be argued there is less risk that a medical gas account would price shop and switch suppliers due to the fact that the installed equipment can be pulled. All-in-all, medical gas accounts tend to be more stable over the long term than industrial accounts. Plus having a healthy mix of both can help a distributor to better weather economic rollercoasters.
Equipment challenges met
For any centralized medical gas delivery system, the equipment that the gas supplier is primarily concerned with rests upstream of the source valve. The requirements for this equipment can be found in Chapter 5 of NFPA 99.
For healthcare facilities requiring systems other than large bulk, this typically included liquid or HP cylinders connected to a manifold via two equal headers that serve as a primary and secondary branch and a reserve header with HP cylinders. The intent of the primary and secondary header is to permit the removal and replacement of the liquid or HP cylinders on the primary side after they have emptied and switched over to the secondary side.
In the case where liquid or HP cylinders are used on both sides, either side is capable of serving the primary or secondary role. For example, when the side designated as primary empties, the manifold automatically switches to secondary. When the empty tanks on the primary side are replaced with full ones, the secondary tank becomes primary and the primary tank becomes secondary.
The exception is the hybrid system. A hybrid system is one in which a liquid container is used on the primary side, and HP cylinders on the secondary side. In this arrangement, there are no switching roles between primary and secondary. Microbulk storage and delivery of medical gases is not specifically addressed in NFPA 99 and falls somewhere between liquid cylinders and large bulk storage.
Especially with oxygen, a bulk system is defined as a system with a total capacity connected and in storage of 566,335 L (20,000 ft3) or more at STP and comply with NFPA 55. Even though some microbulk installations fall below this general sizing criteria, Chart believes that because its microbulk vessels are permanently installed and filled onsite, much like bulk tanks, they would be viewed as bulk tanks and would meet the same requirements as bulk tanks.
For example, all of its Perma-Cyl line of microbulk tankmicrobulk tanks (300 through liters) can be purchased with a medical gas configuration (option 8) that satisfies the requirements found in NFPA 99.
For a delivery manifold, Chart worked with Tri-Tech Medical Inc., a well-respected manufacturer of medical gas pipeline equipment, to co-develop a manifold that works specifically with its Perma-Cyl tanks. While there are many manifolds available today designed to work with liquid cylinders, none included the features we felt were needed to accommodate a true microbulk application.
Their efforts started with Tri-Techs Genesys manifold. Most medical gas manifolds (other than bulk) employ programmable electronics to monitor pressures on the house-line, the primary and secondary headers, and the reserve header.
The information is used to automatically control which header is used and to send applicable alarm signals to the master alarm panel. Some manifolds can even be configured on the fly to accommodate liquid-by-liquid, HP-by-HP or liquid-by-HP with the push of a button and some relief valve changes on the main headers.
There are a few other requirements imposed on these manifolds found in Chapter 5 of NFPA 99 like needing to economize gas on the secondary side (in liquid applications) while the primary side is in use.
Each manufacturer addresses these issues either mechanically or with additional logic sequences written into their programs. However, all manifolds may not reflect a true liquid level reading. Switching between primary and secondary side is largely based on pressure.
When a life sciences or biotech company is just starting out, typically its gas supply requirements are minimal. However, if a lab or research facility makes an important discovery or gets an influx of capital investment, or both, the business can grow rapidly, and its gas needs will expand right along with it. Its important to monitor your gas usage as it increases and take note of critical milestones that can indicate when its time to expand your gas system to the next level of supply.
If your company started off like most life sciences and biotech companies, your initial requirements for carbon dioxide, nitrogen, argon, or other specialty gases was probably limited. Often, in their initial growth stages, start-ups can support their gas needs with as few as one or two gas cylinders every month.
Gas cylinders come in a range of sizes, from small and easily transportable lecture bottles that hold approximately 2 cubic feet of gas to the largest containers that hold approximately 330 cubic feet of gas. So, depending on the pace of your business growth, gas cylinders can be a sufficient gas supply system for a while.
However, once a labs weekly gas usage increases to more than two large cylinders, the lab tech or facility manager should speak with their gas professional about a more efficient and potentially more economical gas supply system. This could mean either switching to dewars or adding more cylinders to the manifold system that is already installed. Which one of these two directions a lab decides to move in typically depends on its space constraints.
Dewars can accommodate up to 5,000 cubic feet of gas, and transitioning to this gas delivery system can be relatively quick and easy. However, if a lab has limited space and cannot accommodate these large, round, stainless-steel containers, continuing to use cylinders may be the better option.
Cylinders can be added to a manifold in many different configurations, but typically it makes sense to balance out each side of the manifold with the same number of cylinders. For example, if a lab is currently using a 1X1 configurationmeaning one large cylinder on each side of the manifoldthe optimal progression may be to move to a 2X2, 3X3, or 4X4 configuration.
Managing the gas supply can start to feel like a full-time job when a company starts churning through one to two dewars per week or multiple cylinders every couple of days. If a lab tech or facility manager has this important responsibility, it can become their main source of stress. Whether its during the workday, in the evening, or over the weekend or a holiday, they must constantly monitor the gas levels in the companys cylinders or dewars, making sure the gas never runs out. Plus, this person is often regularly handling highly pressurized gases and bulky equipment. Being preoccupied with the gas supply may mean other vital lab work they could be focusing on is not getting the attention it needs.
If a companys gas usage has accelerated to this level, its time to look into the potential benefits that transitioning to a MicroBulk or Bulk gas storage tank system generally provides. These tanks are available in a variety of sizes, so a lab using as little as 500 liters of gas or as much as 5,500 liters (or 1,500 gallons) on a monthly basis can benefit from switching to a MicroBulk tank. When monthly usage is above 5,500 liters, a Bulk tank should be able to easily meet this level of demand. And, if you are transitioning from MicroBulk to Bulk, it is typically a relatively seamless transition.
Both MicroBulk and Bulk systems use wireless telemetry, which enables the gas supplier to remotely monitor a labs gas supply and know almost precisely how much gas or liquid remains in a tank.
For example, at Middlesex, we receive twice-a-day readings of our customers MicroBulk and Bulk tanks along with a graph showing daily usage levels, which enables us to anticipate when they might need a refill and to make sure they are on our delivery route if needed.
While customers can opt into gas supply alerts, having a MicroBulk or Bulk system eliminates the need for them to monitor, order, and handle portable gas vessels ever again. It is truly a worry-free gas experience.
If your companys goal is to double, triple, or quadruple its business in the next few years, its important to keep in mind that your gas requirements are going to grow at virtually the same rate. Not having enough space for the transition to a larger gas system when you need it could negatively impact your business.
As soon as possible, even if you are just in the early stages of building out your lab, you should work closely with your gas professional to identify a spot that would accommodate a MicroBulk or Bulk tank when you need it. Often, a small room or a corner of the loading dock is sufficient, as long as the surface is flat. Ideally, this space will be highly accessible to your gas professional when the tank needs to be refilled.
Once you have a designated space for your future gas system, you and your gas professional should partner to carefully monitor your monthly gas consumption. It is crucial to have an accurate forecast for when you might need to transition to a larger vessel, particularly if you are upsizing to MicroBulk or Bulk. In general, installation of these systems might take only a couple of months. But, if the tank, vaporizer, piping, regulation, or other necessary equipment is not in stockwhich does occur more regularly in todays marketplace due to supply chain issueslead times may be much longer.
When you work hand in hand with your gas professional, you should be able to get a thorough understanding of your labs gas usage over time and how rapidly it is increasing. Together, you can determine when you should consider transitioning to a larger system to accommodate your growing gas requirements and the potential time, labor, and cost savings of making the move to MicroBulk or Bulk.
Level 2 systems are those in which interruption of supply would place patients at manageable risk of morbidity or mortality.
Level 3 systems are those that would terminate procedures, but not place patients at risk of morbidity or mortality. Most healthcare facilities fall under level 1 or level 2. Level 3 typically covers clinics, dental and doctors offices, or treatment facilities with limited patient care services.
Comparatively, the equipment and installation requirements of a medical gas account tend to be a bit more expensive than a similarly- sized installation of an industrial account. The requirements imposed by NFPA 99 (ed), NFPA 55 (now ed), CGA M-1 and applicable ASSE standards will be reviewed by the local Authority Having Jurisdiction (AHJ). Only that person can sign off on the installation.
That said; if the equipment is part of a lease package, it could be argued there is less risk that a medical gas account would price shop and switch suppliers due to the fact that the installed equipment can be pulled. All-in-all, medical gas accounts tend to be more stable over the long term than industrial accounts. Plus having a healthy mix of both can help a distributor to better weather economic rollercoasters.
Equipment challenges met
For any centralized medical gas delivery system, the equipment that the gas supplier is primarily concerned with rests upstream of the source valve. The requirements for this equipment can be found in Chapter 5 of NFPA 99.
For healthcare facilities requiring systems other than large bulk, this typically included liquid or HP cylinders connected to a manifold via two equal headers that serve as a primary and secondary branch and a reserve header with HP cylinders. The intent of the primary and secondary header is to permit the removal and replacement of the liquid or HP cylinders on the primary side after they have emptied and switched over to the secondary side.
In the case where liquid or HP cylinders are used on both sides, either side is capable of serving the primary or secondary role. For example, when the side designated as primary empties, the manifold automatically switches to secondary. When the empty tanks on the primary side are replaced with full ones, the secondary tank becomes primary and the primary tank becomes secondary.
The exception is the hybrid system. A hybrid system is one in which a liquid container is used on the primary side, and HP cylinders on the secondary side. In this arrangement, there are no switching roles between primary and secondary. Microbulk storage and delivery of medical gases is not specifically addressed in NFPA 99 and falls somewhere between liquid cylinders and large bulk storage.
Especially with oxygen, a bulk system is defined as a system with a total capacity connected and in storage of 566,335 L (20,000 ft3) or more at STP and comply with NFPA 55. Even though some microbulk installations fall below this general sizing criteria, Chart believes that because its microbulk vessels are permanently installed and filled onsite, much like bulk tanks, they would be viewed as bulk tanks and would meet the same requirements as bulk tanks.
For example, all of its Perma-Cyl line of microbulk tanks (300 through liters) can be purchased with a medical gas configuration (option 8) that satisfies the requirements found in NFPA 99.
For a delivery manifold, Chart worked with Tri-Tech Medical Inc., a well-respected manufacturer of medical gas pipeline equipment, to co-develop a manifold that works specifically with its Perma-Cyl tanks. While there are many manifolds available today designed to work with liquid cylinders, none included the features we felt were needed to accommodate a true microbulk application.
Their efforts started with Tri-Techs Genesys manifold. Most medical gas manifolds (other than bulk) employ programmable electronics to monitor pressures on the house-line, the primary and secondary headers, and the reserve header.
The information is used to automatically control which header is used and to send applicable alarm signals to the master alarm panel. Some manifolds can even be configured on the fly to accommodate liquid-by-liquid, HP-by-HP or liquid-by-HP with the push of a button and some relief valve changes on the main headers.
There are a few other requirements imposed on these manifolds found in Chapter 5 of NFPA 99 like needing to economize gas on the secondary side (in liquid applications) while the primary side is in use.
Each manufacturer addresses these issues either mechanically or with additional logic sequences written into their programs. However, all manifolds may not reflect a true liquid level reading. Switching between primary and secondary side is largely based on pressure.
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When a life sciences or biotech company is just starting out, typically its gas supply requirements are minimal. However, if a lab or research facility makes an important discovery or gets an influx of capital investment, or both, the business can grow rapidly, and its gas needs will expand right along with it. Its important to monitor your gas usage as it increases and take note of critical milestones that can indicate when its time to expand your gas system to the next level of supply.
If your company started off like most life sciences and biotech companies, your initial requirements for carbon dioxide, nitrogen, argon, or other specialty gases was probably limited. Often, in their initial growth stages, start-ups can support their gas needs with as few as one or two gas cylinders every month.
Gas cylinders come in a range of sizes, from small and easily transportable lecture bottles that hold approximately 2 cubic feet of gas to the largest containers that hold approximately 330 cubic feet of gas. So, depending on the pace of your business growth, gas cylinders can be a sufficient gas supply system for a while.
However, once a labs weekly gas usage increases to more than two large cylinders, the lab tech or facility manager should speak with their gas professional about a more efficient and potentially more economical gas supply system. This could mean either switching to dewars or adding more cylinders to the manifold system that is already installed. Which one of these two directions a lab decides to move in typically depends on its space constraints.
Dewars can accommodate up to 5,000 cubic feet of gas, and transitioning to this gas delivery system can be relatively quick and easy. However, if a lab has limited space and cannot accommodate these large, round, stainless-steel containers, continuing to use cylinders may be the better option.
Cylinders can be added to a manifold in many different configurations, but typically it makes sense to balance out each side of the manifold with the same number of cylinders. For example, if a lab is currently using a 1X1 configurationmeaning one large cylinder on each side of the manifoldthe optimal progression may be to move to a 2X2, 3X3, or 4X4 configuration.
Managing the gas supply can start to feel like a full-time job when a company starts churning through one to two dewars per week or multiple cylinders every couple of days. If a lab tech or facility manager has this important responsibility, it can become their main source of stress. Whether its during the workday, in the evening, or over the weekend or a holiday, they must constantly monitor the gas levels in the companys cylinders or dewars, making sure the gas never runs out. Plus, this person is often regularly handling highly pressurized gases and bulky equipment. Being preoccupied with the gas supply may mean other vital lab work they could be focusing on is not getting the attention it needs.
If a companys gas usage has accelerated to this level, its time to look into the potential benefits that transitioning to a MicroBulk or Bulk gas storage tank system generally provides. These tanks are available in a variety of sizes, so a lab using as little as 500 liters of gas or as much as 5,500 liters (or 1,500 gallons) on a monthly basis can benefit from switching to a MicroBulk tank. When monthly usage is above 5,500 liters, a Bulk tank should be able to easily meet this level of demand. And, if you are transitioning from MicroBulk to Bulk, it is typically a relatively seamless transition.
Both MicroBulk and Bulk systems use wireless telemetry, which enables the gas supplier to remotely monitor a labs gas supply and know almost precisely how much gas or liquid remains in a tank.
For example, at Middlesex, we receive twice-a-day readings of our customers MicroBulk and Bulk tanks along with a graph showing daily usage levels, which enables us to anticipate when they might need a refill and to make sure they are on our delivery route if needed.
While customers can opt into gas supply alerts, having a MicroBulk or Bulk system eliminates the need for them to monitor, order, and handle portable gas vessels ever again. It is truly a worry-free gas experience.
If your companys goal is to double, triple, or quadruple its business in the next few years, its important to keep in mind that your gas requirements are going to grow at virtually the same rate. Not having enough space for the transition to a larger gas system when you need it could negatively impact your business.
As soon as possible, even if you are just in the early stages of building out your lab, you should work closely with your gas professional to identify a spot that would accommodate a MicroBulk or Bulk tank when you need it. Often, a small room or a corner of the loading dock is sufficient, as long as the surface is flat. Ideally, this space will be highly accessible to your gas professional when the tank needs to be refilled.
Once you have a designated space for your future gas system, you and your gas professional should partner to carefully monitor your monthly gas consumption. It is crucial to have an accurate forecast for when you might need to transition to a larger vessel, particularly if you are upsizing to MicroBulk or Bulk. In general, installation of these systems might take only a couple of months. But, if the tank, vaporizer, piping, regulation, or other necessary equipment is not in stockwhich does occur more regularly in todays marketplace due to supply chain issueslead times may be much longer.
When you work hand in hand with your gas professional, you should be able to get a thorough understanding of your labs gas usage over time and how rapidly it is increasing. Together, you can determine when you should consider transitioning to a larger system to accommodate your growing gas requirements and the potential time, labor, and cost savings of making the move to MicroBulk or Bulk.
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