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Oxygen and PSA

Can a broken PSA oxygen plant be repaired or refurbished?A stopped PSA plant can be repaired if an assessment finds it repairable. Common faults, when replacing costs less, how repairs are decided and what follows.
Can a containerised oxygen plant be moved?Relocating a containerised PSA oxygen plant: a documented move between hospitals, what the new site needs, and recommissioning, per CHAI and the Global Fund.
Can a PSA oxygen plant be expanded later?PSA oxygen plants built from modules can grow with the hospital. When to expand, and what the pipeline, standby, backup and power need to cope with it.
Can a PSA oxygen plant run on solar power?Solar can power a PSA oxygen plant, but it does not run 24 hours. Sizing advice, the second power source and backup supply it needs, and two examples.
Can a PSA plant be commissioned with remote support?Who must install and commission a PSA oxygen plant, what has to happen on site, and where remote support fits, under UNDP, WHO and Global Fund guidance.
Can a PSA plant run efficiently at part load?Running a PSA plant below rated capacity: duplex plants on one side, cylinder filling at low demand, compressor control and the modular ULTRAOX cascade.
Can oxygen concentrators back up a failed PSA plant?Bedside concentrators as PSA backup: WHO-UNICEF lists cylinders as a backup for other systems and notes that concentrators need power and give low pressure.
Can VSA oxygen plants be used in hospitals?VSA oxygen counts as Oxygen 93, but a hospital VSA plant needs an oil-free booster and local service support. What WHO, the Global Fund and UNDP say.
Does 50 Hz or 60 Hz matter for an oxygen plant?Why mains frequency and voltage matter for a PSA plant: matching the local supply, damage from fluctuation, balanced phases and nameplate records for spares.
Does a PSA oxygen plant need oil-free compressors?WHO accepts oil-free or filtered oil-injected screw compressors for PSA plants; the oil limit is on the oxygen. ULTRAOX SC is oil-less, ST oil-injected.
Does a PSA plant need a backup generator or UPS?A PSA plant needs backup power sized for its start-up loads and a small UPS for its controls. Generator sizing, restart, power quality and backup oxygen.
Does Ultra Controlo make oxygen plants for industry?Yes: ULTRAOX VSA is the Ultra Controlo industrial oxygen plant, delivering 75% to 95% oxygen at 50 kPa, with an optional oxygen booster for higher pressures.
How can the actual output of a PSA plant be measured?Measure a PSA plant's real output: Global Fund 24-hour test at rated flow with purity above 90%, the 1.17 air flow meter factor, booster fill rate and flow records.
How do you convert Nm³/h to litres per minute?How to convert oxygen plant capacity between Nm³/h, L/min and kg per day: WHO conversion steps, published unit pairs and Open Critical Care's gas weights.
How do you estimate a hospital's oxygen demand?How to estimate hospital oxygen demand: the calculation in WHO's 2020 COVID-19 guidance (patients × L/min, in m³/h), its 100-bed example and what to adjust.
How do you measure a hospital's actual oxygen use?How to measure a hospital's actual oxygen use: supply-side logs and flow meters, demand-side bedside records, and the pitfalls Open Critical Care lists.
How does ambient temperature affect a PSA plant?How heat affects a PSA oxygen plant: ambient ranges in WHO, PATH and NHS England guidance, compressor heat and ventilation, and daily checks on hot sites.
How does humidity affect a PSA oxygen plant?Humidity and PSA plants: rising moisture damages the adsorbers; how feed air is dried, filtered and drained, dew point alarms and WHO's 15 to 95% RH range.
How is a PSA oxygen plant commissioned?PSA oxygen plant commissioning: a 24-hour run at maximum flow with purity above 90%, handheld analyser checks, leak, alarm and changeover tests, handover.
How is a PSA oxygen plant delivered and installed?How a PSA oxygen plant reaches the hospital: site preparation, delivery and positioning, connection, commissioning and handover, with the ULTRAOX example.
How is a PSA oxygen plant protected from dust?Keeping dust out of a PSA oxygen plant: a covered, clean housing, an air intake away from exhausts and pollution, filters, and daily checks of intake filters.
How is oxygen purity measured in a PSA plant?How PSA plants measure oxygen purity: duplex paramagnetic monitoring in NHS England guidance, zirconia and paramagnetic analysers, daily and lab checks.
How is the air compressor for a PSA plant sized?A PSA plant's air compressor is sized to the air its oxygen generator consumes at the chosen purity and inlet pressure, with redundancy. Data and examples.
How long does a PSA oxygen plant last?ULTRAOX is designed for a minimum life cycle of 150,000 hours, which Ultra Controlo presents as an investment for at least 20 years.
How long does it take to install a PSA oxygen plant?UNDP's illustrative 2025 timeline: six months of site preparation, one month to install and two to test and commission; production and shipping add weeks.
How loud is a PSA plant, and why does it vent at each cycle?How loud a PSA plant is and why it vents each cycle: WHO 2024 compressor noise limit, AIGA 113/20 venting rules, nitrogen exhaust and noise checks near wards.
How many hours a day should a PSA plant run?WHO's 2020 interim specification said PSA plants can run 24 hours a day, 7 days a week; plan on 80 to 90% of rated capacity and maintenance by hours.
How many litres per minute of oxygen per hospital bed?Oxygen flow per hospital bed: NHS England HTM 02-01 design flows for wards, critical care and theatres, with ACSS and WHO figures and how to size the plant.
How much CO2 does an on-site oxygen plant emit?The CO2 of a PSA oxygen plant is estimated as kWh used times the supply's emission factor, per the GHG Protocol. Energy figures, factor sources and steps.
How much compressed air does a PSA generator need?ULTRACON PSA generators use 3.5 to 1,258 Nm³/h of compressed air for 0.32 to 111.4 Nm³/h of 93% oxygen. Full table at 93% and 95%, with pressure and context.
How much does a PSA oxygen plant cost, and what can it save?Ultra Controlo sizes and quotes each ULTRAOX plant for the hospital’s oxygen demand and site.
How much electricity does a PSA oxygen plant use?A 2020 WHO rule of thumb puts PSA oxygen at 1.22 kWh per m³ and PATH at 1.2 kWh per Nm³ at 65 psig. What changes it: pressure, control, purity, filling.
How much space does a PSA oxygen plant need?A PSA plant's space comes from the maker's layout plus service access; WHO says a plant room may in some cases exceed 6 x 6 x 5 m. Pads, clearances, storage.
How often does PSA zeolite need replacing?How often PSA zeolite needs replacing: supplier intervals in NHS England guidance, what the sources link to sieve damage, and the ULTRAOX zeolite life claim.
How often should a PSA plant's oxygen analyser be checked?How often to check a PSA plant's oxygen analyser: daily handheld comparisons in Global Fund guidance, quarterly gas tests, lab checks and yearly calibration.
How quickly does a PSA plant reach full purity after starting?How a PSA oxygen plant is brought on line after starting: dryer first, drain checks, then purity and pressure confirmed before the pipeline valve opens.
How should an oxygen plant site be secured against intruders?How to secure an oxygen plant and its cylinder store: fences, locked doors, gates, lighting and access for trained staff, from Global Fund, WHO and USAID.
Is a PSA oxygen plant a fire or explosion risk?Is a PSA oxygen plant a fire risk? Why oxygen accelerates fire, the vent and compression hazards, and the precautions in WHO, AIGA and Global Fund guidance.
PSA, cylinders or liquid oxygen: what is the difference?Under AIGA 113/20, oxygen 93 produced by PSA can be manufactured on site within the healthcare facility, while medicinal oxygen supplied in cylinders or.
Should a PSA plant have redundant dryers and condensate drains?HTM 02-01 duplexes a PSA plant's filters and sieves and its medical air chapter duplicates dryers and drains; WHO, USAID and AIGA on drains and dry air.
Should a PSA plant monitor CO, CO2 and moisture online?AIGA 113/20 lists continuous CO2, CO and moisture analysis for oxygen 93 plants, with oil, NOx and SO2 set by risk analysis; pharmacopoeia and HTM notes.
What air treatment does a PSA oxygen plant need?What air treatment sits between the compressor and a PSA oxygen generator: water trap, dryer, filters and air tank, per WHO, AIGA 113/20 and HTM 02-01.
What are the signs of a failing PSA switching valve?Failing PSA switching valves: PATH links leaky valves to low purity, fire and noise; USAID RISE valve checks; Global Fund records of sieve bed pressures.
What capacities do ULTRAOX plants cover?ULTRAOX plant models range from 0.32 to 164 m³/h of oxygen (5.3 to 2,734 L/min) per unit, delivered at 6 bar, according to the ULTRAOX datasheet tables.
What daily checks does a PSA plant operator do?The PSA operator's daily round: checks on ventilation, filters, oil and drains, then readings of temperature, dew point, purity, alarms and running hours.
What does 'normal conditions' mean in plant capacity?What Nm³/h at normal conditions means in an oxygen plant rating, how it differs from Sm³/h, and why the purity setting changes a PSA plant's rated flow.
What does a post-commissioning assessment of a PSA plant check?What the Global Fund post-commissioning form (2025) checks on a PSA plant after handover: budgets, site, compressor, purity, sieve beds, filling, piping, spares.
What does an ULTRAOX plant monitor?The ULTRAOX touch screen, run by a Siemens PLC, shows oxygen purity, flow and total volume produced, oxygen pressure, air quality, equipment status, the.
What happens to a PSA plant during a power cut?What happens when a PSA oxygen plant loses power: safe shutdown, backup power, reserve sources and automatic restart, per AIGA 113/20 and HTM 02-01.
What happens to off-spec oxygen when PSA purity is low?Off-spec PSA oxygen is kept out of the pipeline: under AIGA 113/20, analysers shut the main valve and the backup takes over; WHO 2020 made a purge optional.
What impurities are limited in Oxygen 93?Which impurities Oxygen 93 monographs limit: International Pharmacopoeia and Ph. Eur. values for CO2, CO, NOx, SO2, oil and water, and how plants check them.
What is a containerised oxygen plant, and when is it used?A containerised oxygen plant is a complete PSA plant built inside a shipping container and delivered ready to connect; the Ultra Controlo version is.
What is a PSA medical oxygen generator?A PSA (pressure swing adsorption) oxygen generator makes medical oxygen on site from ambient air, which is about 21% oxygen and 78% nitrogen.
What is checked in a PSA plant factory acceptance test?What a PSA plant factory acceptance test covers: WHO 2024 pre-shipment report on output analysis, tests and calibration, EU GMP Annex 15 and UNDP requirements.
What is the cycle time of a PSA oxygen generator?How the PSA adsorption cycle works per HTM 02-01, the Global Fund and the ULTRACON datasheet, which give no cycle time in seconds, and what operators check.
What is the difference between ULTRAOX SC, ST and CO?They share the same PSA oxygen generators and differ in how the air is compressed and where the plant is housed.
What is the safe shutdown sequence for PSA plant maintenance?Safe PSA plant shutdown for maintenance from USAID RISE, the Global Fund SOP template and AIGA 113/20: isolate, depressurise, power off, lock out, restart checks.
What maintenance does a PSA oxygen plant need?PSA oxygen plant maintenance: daily checks, monthly and yearly tasks, calibration, lab tests, service by running hours and sieve bed recharge, with sources.
What power feed and cabling does a PSA plant need?A PSA plant needs a balanced three-phase feeder, a cable to each component and a cabinet with surge, earth and phase protection, per the supplier's chart.
What power supply does a PSA oxygen plant need?What electrical supply a PSA oxygen plant needs: three-phase voltage and frequency, backup power, in-rush currents and the ULTRAOX component ratings.
What pressure does a PSA oxygen plant deliver?At what pressure a PSA oxygen plant delivers oxygen: WHO, Global Fund, PATH, HTM 02-01 and AIGA 113/20 figures, and the 6 bar outlet of ULTRAOX plants.
What purity is PSA oxygen, and is it medical grade?Single-stage PSA plants such as ULTRAOX produce Oxygen 93, a medical oxygen with its own monographs in the European Pharmacopoeia (Oxygen (93 per cent).
What should a technician check first when PSA purity falls?Low PSA purity checklist from USAID RISE, PATH, AIGA and HTM 02-01: confirm the analyser, compare demand, then check water, oil, valves and sieve beds.
What should an oxygen cylinder filling station tender specify?What a tender for an on-site oxygen filling station should specify, from WHO's 2024 table: booster, filling ramp, purge vacuum, safety, training and spares.
What size PSA plant does a 100-bed hospital need?No single PSA size fits a 100-bed hospital: WHO sizes plants from demand by beds, outlets or past use. Where the 90 m³/h figure comes from and what to adjust.
What staff are needed to run a PSA oxygen plant?Who runs a hospital PSA oxygen plant: operators on site 24/7, technicians on call, a supervising engineer, and the training WHO and the Global Fund ask for.
What ventilation does an oxygen plant room need?PSA plant room ventilation: air changes, room temperature, oxygen depletion sensors, the nitrogen vent and the compressor and room exhausts, per WHO and EIGA.
Which parts of a PSA plant must be oxygen-compatible?Which PSA plant parts need oxygen compatibility: UNDP REQ-OXY-001 (ISO 15001, ASTM G93), WHO 2024 piping and cleaning limits, AIGA 113/20 materials and seals.
Why can't a PSA plant produce 100% oxygen?Single-stage PSA zeolite removes nitrogen but not argon, so oxygen stops at about 95%. Why, what the rest is, and how Oxygen 98 and 99.5% oxygen are made.
Why do PSA exhaust silencers clog, and what are the risks?PSA exhaust silencers: what passes through them, the dust that USAID and AIGA 113/20 point to, the checks operators make, and why vents must stay unrestricted.
Why do PSA oxygen plants stop working?Why hospital PSA oxygen plants break down: power and voltage, heat, wet air, overdrawing, missed maintenance, missing spare parts, staff and budget.
Why does a PSA generator stop on low feed air pressure?Why a PSA generator trips on low feed air pressure: the ULTRACON low inlet pressure shutdown, AIGA 113/20 monitoring, feed pressures, and what to check first.
Why does a PSA oxygen plant need an air dryer?Why PSA feed air is dried: moisture condenses under pressure and harms the adsorbers. Dew point limits from WHO and the Global Fund, and the ULTRAOX dryer.
Why does a PSA plant need an oxygen receiver?What a PSA plant's oxygen receiver or buffer tank does and how EIGA Doc 195 says to size it: demand variation, short peaks and a standby unit's start-up.
Why does PSA purity drop when demand rises?A PSA plant trades flow for purity: draw more than its rated flow and purity and pressure fall. Datasheet figures at 93% and 95%, the cause and what to do.
Why is oxygen pressure low on the ward?Low oxygen pressure at ward outlets: pipe design, filters, valves, leaks, gauges and demand above plant output, with checks from WHO, USAID and Global Fund.
Why must tools used on oxygen equipment be grease-free?Why oxygen work needs grease-free tools, oxygen-service lubricants and seals: HTM 02-01, WHO, Global Fund tool kit and SOP, AIGA 113/20 and ISO 15001.

Medical air

Can medical air be used for autoclaves and other building equipment?No: hospital standards prohibit using medical air for industrial purposes, so autoclaves, drying, valve actuation and other pneumatic equipment need a.
Does medical air need continuous quality monitoring?HTM 02-01 (2026) asks for continuous dew point monitoring on medical air dryers, with alarms; CO, CO2, oil and other limits are checked by quarterly testing.
How does a desiccant air dryer regenerate?How a twin-tower desiccant dryer regenerates, what purge air each dryer type uses, how HTM 02-01 duplicates hospital air dryers, and ULTRADRY air use data.
How is a hospital medical air plant sized?How HTM 02-01 (2026) sizes a hospital medical air plant: design flows and diversity per department, ventilator demand, compressor sets and receivers.
How is medical air quality tested at commissioning?How a new medical air plant is quality tested under HTM 02-01 (2026): source first, then terminal units for oxygen, particles, water, CO, CO2 and odour.
How many compressors does a medical air plant need?A medical air plant needs at least two compressors covering 100% of design flow, within three sources of supply. Sizing per HTM 02-01 (2026) Tables 16 and 17.
How much energy can a variable speed compressor save?A VSD saves energy by matching compressor speed to demand. Ultra Controlo states up to 35% for ULTRASCREW VSD; what HTM 02-01 (2026) asks of VSD air plants.
How much ventilation does a medical air or vacuum plant room need?HTM 02-01 (2026) has medical air and vacuum plantroom cooling set with the manufacturer, kept at 10 to 40 °C and no more than 10 °C above ambient.
How noisy is a medical air plant?How loud a medical air compressor plant is, what HTM 02-01 asks for plantroom noise and its control measures, and ULTRACECO ESW compressor noise at 1 m.
How often are PSA and medical air plant filters changed?Under HTM 02-01 (2026), PSA and medical air filters should be changed at manufacturer intervals, more often if wet or if pressure drop rises. Routines.
How often should medical air dew point and CO sensors be calibrated?HTM 02-01 (2026) sets the accuracy of dew point hygrometers and says CO and other QC analysers should be calibrated on site before and after testing.
How often should medical air quality be tested?HTM 02-01 (2026) sets quarterly QC testing for medical air compressor plants, plus tests after works and interruptions; dental air quarterly or yearly.
Refrigeration or adsorption dryer for medical air?A refrigeration dryer cools compressed air so its water condenses and drains away; an adsorption dryer passes the air through a desiccant and reaches much.
Should medical air and vacuum plants be on emergency power?HTM 02-01 (2026) says medical air and vacuum plant should be on the essential electrical supply and restart in sequence; what ACSS recommends in Portugal.
What alarms should a medical air plant have?HTM 02-01 (2026) lists the faults a medical air plant should report: compressor and dryer faults, plant emergency, low reserve and pipeline pressure.
What are the purity limits for medical air?Medical air limits for oxygen, CO2, CO, SO2, NOx, oil and water as published in HTM 02-01 (2026), and how European Pharmacopoeia monograph 1238 fits in.
What causes a high dew point alarm on a medical air dryer?Under HTM 02-01 (2026), dew point above −46 °C is a plant emergency that switches dryers. Causes in HTM, DOE and CAC sources, and how readings are checked.
What compressed air should feed hospital autoclaves?Autoclaves and pneumatic equipment need a separate technical air system, not medical air. HTM 02-01 (2026), ACSS ET 08/2010 and the ACIH system explained.
What dew point does medical air need?Medical air should hold no more than 67 vpm of water, about −46 °C atmospheric dew point under HTM 02-01 (2026). Dental air, NFPA 99 and dryers explained.
What does an activated carbon tower do in compressed air?An activated carbon tower adsorbs oil vapour and hydrocarbons from compressed air. Where it sits in the treatment line, and the ULTRAK datasheet figures.
What filters does a medical air system need?Medical air filters from compressor to pipeline: inlet filter, water separator, oil filter, desiccant dryer, dust, carbon and bacteria filters, per HTM 02-01.
What is a medical air treatment unit?A medical air treatment unit dries and filters compressed air to pharmacopoeia limits. The typical stages, how they are checked and two Ultra Controlo units.
What is medical air?Medical air is compressed air supplied through the hospital pipeline, breathed by patients and used to drive medical equipment, and the European.
What is synthetic medical air?Synthetic medical air blends oxygen and nitrogen instead of compressing ambient air. What ISO 7396-3:2025 covers, Ph. Eur. 1684 and the HTM 02-01 criteria.
What is the reserve supply for a medical air system?Medical air systems need three sources of supply. What HTM 02-01 (England) and the Portuguese ACSS specify as reserve when the compressors fail, and for how long.
What ISO 8573-1 class corresponds to medical air?No ISO 8573-1 class equals medical air. ISO 8573-1 grades particles, water and oil; medical air limits also cover O2, CO, CO2, SO2 and NOx. What each covers.
What maintenance does a medical air plant need?Medical air plant maintenance: compressor service by running hours, dryer and filter upkeep, receivers and drains, and quarterly air quality tests in England.
What pressure is medical air supplied at?Medical air is supplied at 400 kPa and surgical air at 700 kPa or more in NHS England guidance. The Portuguese ACSS pressures and how plants reduce pressure per use.
Where should a medical air compressor intake be?Where to put a medical air compressor intake: away from exhausts, parking, chimneys, vacuum and AGSS discharges, at least 5 m up in NHS England guidance, with filters.
Why does a hospital air compressor trip on high temperature?HTM 02-01 (2026) says a temperature sensor with controls that cut compressor power can counter oil and PTFE ring decomposition. Cooling, room and reset checks.
Why does a medical air plant run all the time?Why a hospital medical air plant may run for long periods under HTM 02-01 (2026): continuous ventilator use, plant records, leak tests and ULTRAAR controls.
Why does pressure drop in compressed air cost energy?Why pressure drop wastes compressor energy: the 1 percent per 2 psi rule of thumb, unregulated demand, where losses occur, how to cut them, and ULTRASEC data.
Why is medical air pressure low at the ward outlets?Low medical air pressure at ward outlets: what HTM 02-01 (2026) checks between plant and outlet, from the pressure-reducing station to filters and leaks.
Why is there water in medical air pipelines?Why water appears in medical air pipelines, how HTM 02-01 plants separate, drain and dry it, the 67 vpm limit, the NFPA 99 alarm and ULTRAAR air treatment.

Vacuum and AGSS

Are oil-free vacuum pumps used in hospitals?Dry-running vane and claw pumps can replace oil-lubricated vane pumps in hospital vacuum plants. What changes for the exhaust, maintenance and specification.
Can a medical vacuum plant use less energy?How a hospital vacuum plant uses less energy: vessel sizing, control settings, right-sized pumps and variable speed drives, as offered on the ULTRAVAC CLP.
Can laboratory vacuum share the medical vacuum system?Can a hospital laboratory use piped medical vacuum? HTM 02-01 asks for separate laboratory installations; a New York State spec also splits the two.
Can plastic pipe be used for medical vacuum or AGSS?Copper or plastic for medical vacuum and AGSS pipework? HTM 02-01 asks for ISO 7396 materials and copper AGSS pipe, and names plastics for dental vacuum.
Can portable suction replace central vacuum in small hospitals?Can portable suction replace piped vacuum? HTM 02-01 says mobile units are not suitable as the main supply; they serve as emergency or tertiary supply.
How do staff know an anaesthetic gas scavenging system has failed?How theatre staff see an AGSS failure under HTM 02-01: indicator panels with mains, airflow, duty pump failed and system failed, plus quarterly alarm tests.
How is a hospital medical vacuum plant sized?Sizing a hospital vacuum plant under the NHS England HTM 02-01: room needs, 40 L/min per terminal unit, diversity formulas, then pumps and vessel that hold the flow.
How is an anaesthetic gas scavenging system tested?AGSS testing under the NHS England HTM 02-01: one-hour full-load run, metered leaks at every terminal unit, alarm checks, recommissioning at least every 12 months.
How many vacuum pumps does a hospital plant need?Under HTM 02-01 (England) and Portugal's ACSS, hospital vacuum plants have three or more pumps so the design flow holds during maintenance and a fault.
How often are medical vacuum bacterial filters changed?How often medical vacuum bacteria filters are changed under HTM 02-01, usually yearly or by hours, and how they are bagged, labelled and disposed of safely.
Is AGSS the same as medical vacuum?No: medical vacuum provides clinical suction at a stronger vacuum, while an AGSS removes anaesthetic gases at a much lower suction level, and its disposal.
What alarms does a medical vacuum plant need?The alarms a medical vacuum plant needs: HTM 02-01 plant faults, plant emergency and low pipeline vacuum, area alarms, NFPA 99 settings, testing and QuVAC.
What are suction regulators and collection jars?Suction regulators control suction at a vacuum outlet and collection jars hold the fluid, limiting carry-over into the pipeline, as the NHS England HTM 02-01 asks.
What does AGSS stand for?AGSS stands for anaesthetic gas scavenging system: the system that captures waste anaesthetic gases from the patient’s breathing circuit and removes them.
What flow does an AGSS extract per operating room?AGSS extract flow per the NHS England HTM 02-01: 130 L/min design flow per terminal unit, two units per theatre suite, and the high-flow and low-flow limits.
What flow should a hospital suction outlet provide?Under NHS England's HTM 02-01, each hospital suction outlet is designed for 40 L/min and each operating room for 80 L/min: design flows by area and diversity.
What is a dental central suction system?One vacuum plant serving many dental chairs: dry, semi-dry and wet types, HTM 02-01 (England) sizing at 300 L/min per chair, and the ULTRAVAC DENTAL range of models.
What maintenance does a hospital medical vacuum plant need?Medical vacuum plant maintenance under HTM 02-01 Part B: weekly checks, quarterly and annual pump work, alarm tests and bacteria filter replacement.
What should be done when fluid gets into the vacuum pipeline?What HTM 02-01 asks when patient fluid enters a medical vacuum pipeline: report it, decontaminate with disinfectant through the outlets, then check the filters.
What vacuum level does a hospital suction system need?Outlet vacuum for hospital suction: the NHS England HTM 02-01 asks for 315.5 mmHg at each terminal unit at 40 L/min; Portugal's ACSS sets 53 kPa in the pipework.
Where should a medical vacuum plant exhaust?Where a vacuum plant should discharge under HTM 02-01 and ACSS: clear of windows and air intakes, with rain and vermin guards, a drain jar and its own pipe.
Where should an AGSS plant exhaust discharge?Where an AGSS exhaust should discharge under HTM 02-01: roof level after a risk assessment, 5 m from mechanical and 3 m from passive inlets, not over windows.
Why does a hospital vacuum plant run all the time?Why a hospital vacuum plant may run for long periods: HTM 02-01 pump settings, what to record, how leakage is checked, and the variable speed ULTRAVAC CLP.
Why does bedside suction lose power?Why a bedside suction outlet goes weak: full jars, wet filters, faulty terminal units, fluid in the pipework or plant filters, and the checks HTM 02-01 sets.
Why does medical vacuum need bacterial filters?Why medical vacuum plants have bacterial filters, where HTM 02-01 and ACSS ET 03/2006 place them, and why they come in duplex sets rated for full flow.

Pipeline systems

At what pressure should a medical gas area alarm trigger?Area alarm trigger points: ±20% of normal line pressure in the NFPA 99 2021 edition (2027 is now current); NHS England's HTM 02-01 sets its own values.
Can a probe fit the wrong medical gas outlet?Medical gas outlets are gas-specific under ISO 9170-1, so a probe should not fit another gas's outlet. Where that protection ends and how outlets are tested.
Do copper medical gas pipes need earthing or isolation from supports?HTM 02-01 (2026) on copper medical gas pipes: bonding to the distribution board and main earth terminal, not earthing equipment, and non-reactive supports.
How are CO, CO2 and moisture tested at medical gas outlets?How HTM 02-01 (2026) tests CO, CO2, water vapour, nitrogen oxides and oil at medical gas outlets: analysers, detector tubes, sampling points and limits.
How are empty cylinders changed on a manifold?How trained staff change empty cylinders on a medical gas manifold: the HTM 02-01 (2026) example procedure, seals, valves, leak checks and the register.
How are wrong gas connections prevented?How medical gas systems stop wrong gas connections: gas-specific outlets, NIST hoses, pin-index cylinders, labelling and cross-connection tests (ISO, HTM).
How can an oxygen pipeline be upgraded for surge ICU demand?Upgrading a hospital oxygen pipeline for high-flow and ICU surges: COVID-19 lessons, pressure drop checks, larger flow loops, dedicated lines and vaporisers.
How do medical gas alarms connect to a BMS?How medical gas alarms link to a hospital BMS: volt-free contacts, fail-safe relays, data links, and why HTM 02-01 lets the BMS monitor but not replace them.
How is a medical gas pipeline pressure tested for leaks?How a new medical gas pipeline is pressure tested for leaks under HTM 02-01: carcass and pipeline tests, test pressures, the two-hour criterion and nitrogen.
How is gas identity and purity checked at each outlet?How gas identity and purity are checked at medical gas outlets before handover: outlet, particulate and cross-connection tests, then independent QC analysis.
How is medical gas pipe sized?How medical gas pipe is sized: design flow per outlet, diversity formulas per department and a pressure-loss limit (HTM 02-01), plus ACSS and FD S90-155.
How is oxygen piped from a plant in a separate building?How oxygen is piped from a plant in another building under HTM 02-01 (2026): drained ducts or twin trenches, wall and roof armour, valves and earthing.
How many medical gas outlets does each bed need?Typical oxygen, medical air and vacuum outlet numbers per bed from HTM 02-01 (2026) Table 1, for wards, theatres, recovery, intensive care and neonatal cots.
How must medical gas pipes be labelled?How medical gas pipes are labelled: gas name, colour code and flow direction, with the HTM 02-01 (England) spacing rules (BS 1710) and Portugal's ACSS rules.
How often should medical gas alarms be tested?How often HTM 02-01 asks for medical gas alarms to be checked: daily plant alarms, weekly local panels, annual transducers and set points, and the tests.
How often should medical gas hose assemblies be checked or replaced?HTM 02-01 gives medical gas hose assemblies in pendants a five-year life. What is checked between replacements, who replaces hoses and the tests that follow.
How often should medical gas outlets be tested?How often medical gas outlets are tested: quarterly under HTM 02-01, what the blank-probe and flow tests check, records, hose life and other outlet tests.
How often should medical gas zone valves be operated and checked?How HTM 02-01 (2026) has medical gas zone valves (AVSUs) tested: closure and zoning tests, operational tests, five-yearly inspection, records and locks.
How should medical gas cylinders be stored?How to store medical gas cylinders in a hospital: ventilated dedicated stores, separate full and empty bays, restraint, stock limits and mixtures (HTM 02-01).
How should medical gas outlets be specified in a tender?How to specify medical gas outlets in a tender: ISO 9170-1 plus national connector standards, HTM 02-01 (2026) mounting, labelling, plugs and quarterly tests.
Is a medical gas outlet the same as a terminal unit?A medical gas outlet and a terminal unit are the same device. The names ISO 9170-1, HTM 02-01 and NFPA 99 use, and what the ISO term also covers.
What alarms does a medical gas pipeline need?EN ISO 7396-1 includes requirements for the monitoring and alarm systems of a medical gas pipeline, alongside its supply and distribution.
What are the minimum pipe sizes for medical gas and vacuum lines?Minimum pipe sizes for medical gas and vacuum under HTM 02-01 (2026): 22 mm for supply lines, distribution, ring mains and flow loops, larger by calculation.
What colour identifies each medical gas?Medical gas colours by country: oxygen cylinders have a white shoulder in the ISO system and are green in the US. US cylinder and NHS England pipe colours.
What copper pipe is used for medical gases?EN 13348 copper tube for medical gas pipelines (6 to 219 mm, up to 2 000 kPa), cleaned for oxygen and brazed under nitrogen under HTM 02-01 and ACSS rules.
What daily and weekly checks does a medical gas pipeline need?Daily and weekly checks on a hospital medical gas pipeline under HTM 02-01 (2026): alarms, liquid oxygen, compressors, vacuum plant, manifolds and stores.
What does a hospital medical gas committee do?The medical gas committee is now the Medical Gas Safety Group in HTM 02-01 (2026): its chair, typical members, remit, quarterly meetings and project groups.
What features must a medical gas alarm panel have?Features a medical gas alarm panel needs under NFPA 99 (2021 text) and HTM 02-01: sound, tones, mute, lamp test, battery, power restart, fault supervision.
What flow test is done on a medical gas outlet?How each medical gas outlet is flow and pressure tested: HTM 02-01 (2026) terminal unit checks, Table 2 test flows, form B26 and the CSA method in Canada.
What is a cross-connection test in a medical gas pipeline?A cross-connection test proves each medical gas outlet is fed only by its own pipeline: the HTM 02-01 (2026) method and a 2021 NFPA 99 dental chapter text.
What is a medical gas ceiling pendant?What a medical gas ceiling pendant is, where it is used, and what HTM 02-01 says about fixed and movable pendants, hoses, brakes, electrics and maintenance.
What is a medical gas emergency cabinet?A medical gas emergency cabinet keeps gases flowing to a critical area of the hospital if the network that feeds it fails, without anyone having to intervene.
What is a medical gas line isolation valve?A line valve assembly isolates part of a medical gas pipeline: how HTM 02-01 (2026) wants it built, locked, keyed and placed, and how it differs from an AVSU.
What is a medical gas pipeline system (MGPS)?A medical gas pipeline system (MGPS) is the network that carries medical gases and vacuum from the central supply to every point of use in a hospital.
What is a medical gas zone valve box (AVSU)?A zone valve box (AVSU) isolates one medical gas to one area. What is inside it, how emergency access works and what HTM 02-01 (2026) asks for on labels.
What is a particulate test on a medical gas outlet?How medical gas outlets are tested for particles under HTM 02-01: the engineer's membrane filter test, the Quality Controller's 0.45 µm test, and failures.
What is a second-stage pressure regulator in a gas network?What a second-stage pressure regulator does in a medical gas network, how it is installed in pairs, and the ACSS and HTM 02-01 rules on pressures and alarms.
What is a third-source or fourth-source manifold panel?What third-source and fourth-source manifold panels are, how ISO 7396-1, HTM 02-01 and ACSS count supply sources, and where a critical emergency supply fits.
What is an emergency supply inlet on a medical gas network?What an emergency supply inlet on a medical gas pipeline is, how HTM 02-01 treats temporary inlet ports and backfeed kits, and how an emergency box differs.
What is nitrogen used for in hospitals?Nitrogen in hospitals: driving surgical tools instead of surgical air, liquid nitrogen for cryotherapy and oxygen-free nitrogen for brazing, per HTM 02-01.
What is the difference between plant, master, area and local alarms?Plant, master, area and local medical gas alarms compared: what each monitors and where it goes, under HTM 02-01 (2026) and the NFPA 99 2021 edition.
What is the diversity factor in medical gas design?The diversity factor in medical gas pipe design: how HTM 02-01 turns outlet flows into diversified flows, where none applies, and how countries differ.
What limits pipeline installation in low-resource hospitals?What limits medical gas pipeline installation in low-resource hospitals: brazing on every joint, scarce skilled technicians, long installs and imported pipe.
What maintenance does a medical gas cylinder manifold need?Cylinder manifold maintenance under HTM 02-01 (2026): weekly checks, proving the reserve manifold, leak, tailpipe, regulator and changeover tests.
What maintenance does a medical gas pipeline need?Medical gas pipeline maintenance under HTM 02-01 (2026): daily, weekly, quarterly, annual and five-yearly tasks, permits to work and the records to keep.
What pipeline redundancy do critical care areas need?Dual A and B circuits, ring mains, ladders and flow loops for ICUs and theatres under HTM 02-01 (2026), plus the ACSS reserve supplies for critical care.
What pressures do medical gas pipelines run at?Medical gas pipeline pressures: 400 kPa for oxygen and medical air and 700 kPa for surgical air in NHS England's HTM 02-01; 345 to 380 kPa in NFPA 99 (2021).
What should a hospital's medical gas policy contain?What a hospital medical gas operational policy covers under HTM 02-01 Part B (2026): roles, permits, system limits, gas quality, training and review.
What should a medical gas cylinder manifold tender specify?What to put in a cylinder manifold specification under HTM 02-01 (2026): role, automatic changeover, ISO 10524-2 regulators, safety valves, cylinder rating.
What should a medical gas network design report contain?What a medical gas network design report holds, per PAHO and HTM 02-01: assumptions, calculations, start-up instructions, drawings, materials, technical file.
What tests are done when commissioning a medical gas pipeline?Commissioning tests for a medical gas pipeline: pressure, cross-connection, zoning, flow, alarm, particulate and gas quality, in HTM 02-01 and NFPA 99 (2021).
What types of medical gas outlet exist?Medical gas outlet types explained: BS 5682, DIN 13260-2, NF S90-116, DISS and NIST, and why ISO 9170-1 sets performance but leaves probe dimensions national.
Where should a medical gas zone valve box be installed?Where to install a medical gas zone valve box (AVSU): outside the department, 1 to 1.8 m high, clear of doors, with its own alarm, per HTM 02-01 (2026).
Where should medical gas pipes not be routed?Where medical gas pipes should not run under HTM 02-01 (2026): lift shafts, kitchens, boiler and generator rooms, fire-risk areas, plus clearances and ducts.
Where should the medical gas master alarm be located?Where the medical gas master alarm goes: a location staffed 24 hours a day, such as main reception, with repeater panels, under HTM 02-01, NFPA 99 and ACSS.
Which gases does a hospital pipeline system carry?A hospital pipeline can carry oxygen or oxygen 93, medical and surgical air, nitrous oxide, CO2 and vacuum. The services ISO 7396-1 and HTM 02-01 cover.
Which medical gas outlet standard does each country use?Medical gas outlet styles by country: BS 5682 in the UK, NF S90-116 in France, DIN 13260-2 in Germany, and why ISO 9170-1 leaves probe sizes national.
Which spare parts should a hospital keep for its gas network?Spare parts for a hospital medical gas network: what a PAHO/WHO tender required, and the spares, seals, hoses and valves HTM 02-01 (2026) plans for.
Why are medical gas pipes brazed with a nitrogen purge?Why medical gas copper pipes are brazed with an oxygen-free nitrogen purge, how the purge is done under HTM 02-01, and how the joints are checked.
Why do medical gas area alarms give false alarms?Why medical gas area alarms give unwanted signals and how to read them: electrical noise, power loss, wiring faults, pipeline work and HTM 02-01 checks.
Why do medical gas pipelines need pressure relief valves?Where HTM 02-01 (2026) puts pressure safety valves on medical gas pipelines, manifolds and air plant, where they vent, and why they are replaced, not tested.
Why must medical gas pipes be cleaned for oxygen?Why medical gas pipes and fittings are cleaned for oxygen service: fire risk with oil and grease, gas quality, and what EN 13348 and HTM 02-01 require.

Standards

Is there WHO prequalification for PSA oxygen plants?WHO prequalification does not list PSA oxygen plants among eligible device types (October 2026). What UNDP, UNICEF and the Global Fund accept instead.
What changed in the 2026 edition of HTM 02-01?HTM 02-01 (2026) explained: risk-based design, the Medical Gas Safety Group, new dental, quality control and decommissioning chapters, and the HSIB lessons.
What does resolution WHA76.3 on medical oxygen ask?WHA76.3 (30 May 2023) urges Member States to take 20 actions on medical oxygen, from costed national plans to qualified engineers, and asks WHO for 11.
Which standard covers concentrator supply to a pipeline?Which standard covers PSA concentrator supply to a hospital pipeline: ISO 7396-1:2016 revised the withdrawn ISO 10083; ISO 80601-2-69 is for single patients.

Service and projects

Can a PSA tender set a maximum kWh per cubic metre?Whether a PSA oxygen plant tender can cap kWh per cubic metre, what WHO and UNDP ask bidders to declare, and why energy figures need their conditions.
Does Ultra Controlo train hospital staff?Yes: on large plants Ultra Controlo factory technicians supervise installation, start-up and staff training, and the company runs medical gas training for.
How can a hospital cut the energy use of its gas plants?How hospitals cut the electricity used by oxygen, medical air and vacuum plants: variable speed drives, lower pressure, leak control and the right purity.
How can a ministry audit the status of all its oxygen plants?How a ministry can survey its PSA oxygen plants: Global Fund repair assessment teams and forms (2025), PATH's failure analysis (2023) and WHO and UNICEF tools.
How can a ministry train enough technicians for its oxygen plants?How ministries can build biomedical technician capacity for oxygen plants: WHA76.3 (2023), PATH's recommendations (2023) and Global Fund, WHO and UNDP training.
How can ministries buy oxygen equipment spare parts centrally?How oxygen plant spare parts and service kits can be bought centrally: PATH's 2023 pooled procurement pilot, central storage by ministries and Global Fund guidance.
How do delay penalties work in oxygen plant contracts?How delay damages are set and capped in oxygen plant contracts: World Bank standard conditions (2020) and a 2022 CHAI PSA plant tender at 1% per day.
How do I get a quote or ask an engineer?Email leads@ultra-controlo.com or call +351 219 154 350 with the gases you need, the site and the demand.
How do you find leaks in a medical gas network?How leaks in a hospital medical gas pipeline are measured and found: pressure decay tests, oxygen-safe leak fluid, ultrasonic detectors and blank probes.
How do you keep a hospital oxygen plant running for years?What keeps a hospital PSA oxygen plant running for years: life-cycle funding, power, trained staff, spare parts and service, per Global Fund and WHO guidance.
How do you write a brand-neutral PSA plant specification?How to write a performance-based, brand-neutral PSA oxygen plant specification, using World Bank procurement rules and WHO's 2024 generic specifications.
How is a donor-funded oxygen plant handed over to the ministry?How a donor-funded oxygen plant passes to the ministry or hospital: Global Fund handover checklist, warranty and budget checks, transition plans and examples.
How long should a PSA plant service contract last?How long a PSA oxygen plant service contract should run, according to Global Fund, WHO, UNDP and World Bank documents, and what the contract should state.
Should a PSA tender require remote monitoring?What WHO (2024, 2020) and UNDP (2025) say about remote monitoring of PSA oxygen plants, what the control panel should display and remote support terms.
Should an oxygen plant tender require local after-sales service?What WHO (2024, 2023), UNDP (2025) and UNOPS tenders ask about local after-sales service for oxygen plants, and the evidence a bidder can give.
What are the key steps to establish a PSA plant in a hospital?The six stages UNDP (2025) sets for establishing a PSA oxygen plant in a health facility, from needs assessment and specifications to monitoring and sustainability.
What business models exist for hospital oxygen plants?Hospital oxygen business models: bulk supply, filling stations, direct purchase and leasing (PATH and CHAI, 2021), plus PPP and oxygen as a service (Global Fund).
What documents should come with an oxygen plant handover?Documents a hospital should get at an oxygen plant handover: manuals, test reports, as-built drawings, maintenance schedule, warranty and training records.
What does a site need before an oxygen plant is installed?For an ULTRAOX plant, the hospital provides a clean, level area reachable by a crane, a drain for condensate, anchoring for the equipment, three-phase.
What does an independent review of PSA plant projects assess?What a Global Fund independent review of PSA oxygen plant projects checks: demand, sizing, power, site, staff, warranty, maintenance and functionality.
What happens during a medical gas site survey?What engineers check in a site survey for an oxygen plant or medical gas network: demand, power, location, access, existing pipelines and ULTRAOX site needs.
What information does a supplier need to quote an oxygen plant?What a hospital should send to get a PSA oxygen plant quoted: demand in m³/h, purity and pressure, site climate and altitude, power, space, current sources.
What is a manufacturer's authorisation in an oxygen plant tender?What a manufacturer's authorisation letter is in an oxygen plant tender, what UNDP, WHO and the Global Fund ask for, and how it ties to warranty and parts.
What is a national medical oxygen plan?What a national medical oxygen plan covers and who prepares it, from WHA76.3, the Lancet Global Health Commission, WHO, UNICEF and Global Fund guidance.
What is included in a turnkey oxygen plant contract?What a turnkey PSA oxygen plant contract covers and what is often left out: civil works, electrical upgrades and the pipeline, with who does what on site.
What is Project BOXER for oxygen plants?What the Global Fund's Project BOXER is: Build Health International technical assistance for PSA oxygen plants, from specification to post-commissioning.
What is UltraCare?UltraCare is the Ultra Controlo technical assistance programme for its medical gas systems, available 24 hours a day, 365 days a year.
What is UltraGreen?UltraGreen is the Ultra Controlo sustainability plan for ULTRAOX oxygen plants: an ULTRAOX enrolled in it runs on 100% renewable electricity, from on-site.
What language should an oxygen plant's HMI and manuals use?Which language an oxygen plant's control panel, training, manuals and documents should use, according to WHO (2024), UNDP, UNICEF and World Bank rules.
What makes up the lifecycle cost of a PSA oxygen plant?What the lifecycle cost of a PSA oxygen plant includes: capital, energy, maintenance, spare parts, repairs, staff and service contract, and over what period.
What performance guarantees should a PSA plant contract include?Which flow, purity, pressure, energy, lifespan and spare parts guarantees a PSA oxygen plant contract should contain, and how WHO and UNDP ask for proof.
What response times should a medical gas maintenance contract set?Response times, visit timing and reports for a hospital medical gas maintenance contract under HTM 02-01 (2026), with WHO, UNDP and Global Fund terms.
What should a hospital check when comparing PSA bids?What to check when comparing PSA oxygen plant bids: flow at the same purity, test reports and certificates, warranty, spare parts, service and energy use.
What should a national oxygen plant maintenance contract cover?What a ministry contract to maintain oxygen plants in many hospitals should cover, from WHO 2024 specifications, Global Fund guidance and published tenders.
What should be checked before accepting a donated oxygen plant?What a ministry or hospital should check before accepting a donated oxygen plant: WHO donation criteria, costs, spare parts, power, climate and maintenance.
What site design conditions should a PSA tender specify?Site conditions a PSA oxygen plant tender should state under WHO (2024) and UNDP (2025): 5 to 40 °C, 15 to 95% humidity, elevation, dust and power supply.
What spare parts should a hospital keep for a PSA plant?Spare parts and consumables a PSA oxygen plant should keep: two to three years of stock, planned by running hours, agreed with the maker and stored safely.
What third-party test reports prove an oxygen plant's performance?Third-party test reports UNDP (2025) and WHO (2024) ask for to prove oxygen plant performance: ISO 17025 labs, ILAC, notified bodies and pre-shipment tests.
What training should a PSA plant supplier provide?What training a PSA oxygen plant supplier should give: on-site training at commissioning, minimum content, refresher and management courses, warranty rules.
Which Incoterms are used when buying an oxygen plant abroad?Incoterms 2020 rules in published oxygen plant tenders (CPT, DAP), how each rule splits delivery, cost and risk, and what is left to the contract.
Which indicators should a hospital track for its oxygen plant?Oxygen plant indicators named by UNDP (2025), Global Fund (2024) and WHO: production, purity, flow and pressure, running hours, shutdowns, maintenance and costs.
Who funds PSA oxygen plants in public hospitals?Who pays for public PSA oxygen plants: Global Fund grants (Grant Cycle 8, 2026 to 2028), World Bank-financed projects, UNICEF and national budgets.

Ultra Controlo

Does Ultra Controlo offer remote monitoring of its plants?Which Ultra Controlo plants offer remote monitoring, remote alarm signalling or a BMS link, according to the ULTRAOX, ULTRAAR and ULTRAVAC datasheets.
Does Ultra Controlo supply industry as well as hospitals?Yes. Alongside its medical range, Ultra Controlo supplies compressed air, vacuum and oxygen systems to more than 40 industries.
What does the Ultra Controlo industrial division supply?The Ultra Controlo industrial division: ULTRASCREW compressors, dryers, carbon towers, air receivers, ULTRAOX VSA oxygen plants and five partner brands.
What is Ultra Controlo?Ultra Controlo is a Portuguese company that designs and manufactures medical gas systems for hospitals.
Where are Ultra Controlo systems installed?Ultra Controlo systems are installed in more than 80 countries.
Where are Ultra Controlo systems made?In Portugal: Ultra Controlo designs and manufactures its systems there, in its own factories.
Where is Ultra Controlo headquartered?Ultra Controlo is headquartered at Avenida dos Combatentes 52, Abrunheira, Sintra, Portugal, and designs and manufactures its systems in its own factories there.