MEDGAS

All pressure relief valves should be designed for the specific gas service and be made of one of what 3 metals?

1. Brass 2. Bronze 3. Stainless Steel [5.1.3.5.6.1(7), p. 113.]

What is required for tubing in positive pressure medical gas systems?

1. Plugged 2. capped 3. oil-less 4. cleaned 5. labeled oxygen or med gas (5.1.10.1-10(1-8), p. 204)

List the five parts that are required for Receivers for medical air.

1. Relief Valve. 2. Automatic Drain. 3. Manual Drain. 4. Sight Glass. 5. Pressure Indicator [5.1.3.6.3.6(3), p. 129.]

What is Liquid Oxygen Portable Container?

1.5L portable oxygen container (3.3.29.2, p. 67)

A local alarm should activate when Carbon Monoxide reaches or exceeds what level (PPM)?

10ppm [5.1.3.6.3.13(3), p.138 (See also 5.1.9.5.4(2)]

Cylinders in use and in storage shall be prevented from reaching temperatures in excess of ________.

125 degrees F [5.1.3.2.11, p. 105.]

Nitrous Oxide should never reach a temperature below

20 degrees F [15.4.2.4.7, p. 539.]

A Master alarm should activate when the pressure in the main supply lines increases or decreases by what amount?

20% [5.1.9.2.4(7), p.197]

What is the atmospheric oxygen level?

21% (3.3.130, p.83)

Medical air intake should not be located closer than ______ from any WAGD discharges.

25 feet' [5.1.3.6.3.11(B), p. 135.]

Medical air intakes shall be located ___ feet from ventilating systems, exhausts & fuel storage; ___ feet from any door or opening; away from potential contaminants; and at a minimum distance of _______ft above ground level.

25 ft; 10f ft; 20 ft [5.1.3.6.3.11(A-D), p. 135]

Vacuum receivers shall be capable of withstanding a gauge pressure of _____ of mercury.

30" Hgv = 760mm [5.1.3.7.3 (3), p 144]

Carbon monoxide shall activate the required alarms when the dewpoint exceeds _______.

35 degrees [5.1.3.6.3.13(3), p. 138]

Medical air compressor systems shall have a pressure relief valve set at ________ above line pressure.

50% [5.1.3.6.3.2(5), p. 126.]

How much will liquid oxygen expand at room temperature?

860 times (3.3.130.2, p.84)

Medical air filters shall be sized for 100% of the system peak calculated demand and be rated for a minimum of ______ efficiency at ______ micron or greater.

98% at 1 [5.1.3.6.3.8(3), p. 130.]

Brazing procedures for med gas and vacuum piping shall be performed by individual qualified in accordance with

AWS B2.2/B2.2M; ASME Section IX (9) [5.1.10.11.11.1 p. 228.]

What is the total pressure in a system with reference to zero pressure?

Absolute Pressure (3.3.149.1 (HYP))

What is the heating of gas caused by its compression?

Adiabetic Heating (3.3.1, p.61)

What is an intimate mixture of a liquid in a gas in which the gas is the distributor of the liquid?

Aerosol (3.3.2, p. 61)

Medical air quality monitoring for dew point shall activate a local alarm and _____ when dew point at system pressure exceeds ____ degrees Fahrenheit.

All master alarms; +35 [5.1.3.6.3.13(3). p.?]

What is the total pressure of the environment referenced?

Ambient Pressure (3.3.149.2 p. 88)

What includes, but is not limited to, hospitals, nursing homes, limited care facilities, clinics, medical and dental offices, and ambulatory health care centers, whether permanent or movable?

Ambulatory Health Care Center (A. 3.3.73. p. 630)

The 24-hour standing pressure test of the positive pressure piping system shall be witnessed by?

An ASSE 6020 or 6030 inspector or the authority having jurisdiction. [5.1.12.2.6.7, (p. 242-43).]

What is a warning system within an area of use that provides continuous visible and audible surveillance of Category 1 and Category 2 medical gas and vacuum systems. (PIP)

Area Alarm (3.3.3.1 p. 61)

What is any point within a room within 4.3m/15ft of oxygen equipment or an enclosure containing or intended to contain an oxygen-enriched atmosphere?

Area of Administration (3.3.11 p.63)

What type of filler material is used in copper to copper brazing for med gas?

BCuP Silver phos (5.1.10.4.1.7, p. 209)

Level 1 medical vacuum sources shall consist of an automatic means to prevent ________ from any on-cycle vacuum pumps through any off-cycle vacuum pumps.

Backflow [5.1.3.7.1.1(2), p. 143-44]

T OR F? When used for bulk cryogenic liquid systems, final line pressure regulators shall be a __________design.

Balanced [5.1.3.5.10.4, p. 117.]

Medical air receivers shall be provided with a/an ______________ in the piping to service the receiver without interrupting the supply.

Bypass [5.1.3.6.3.9(D), p. 131.]

When low pressure threaded connections are employed in gas equipment, they must be in accordance with the applicable sections of which publication?

CGA V-5 Diameter Index Safety System; DISS [15.4.2.2.4, p. 536.]

All medical alarm systems shall have what type of audible alarm indicator for each condition monitored?

Cancellable [5.1.9.1(3), p.192]

Medical air compressor systems shall have piping and components between the ____ and the shutoff valve that do not contribute to contaminant levels.

Compressor [5.1.3.6.3.252), p. 126.]

What is a system of non-interchangeable medical gas and vacuum connectors complying with CGA V-5 Diameter-Index Safety System?

D.I.S.S. Connectors (3.3.43, p 70)

What is a paired set of fittings that permits gas flow when correctly mated but interrupts flow when separated?

Demand Check Valve (3.3.36 p. 69)

What is electrically powered equipment whose continuous operation is necessary to maintain a patient's life?

Electrical Life Support Equipment, ELS (3.3.45 p.70)

Medical air compressors that are designed to separate the oil containing section of the compression chamber shall be provided with a coalescing filter with ____ _____ _____.

Element change Indicator [5.1.3.6.3.12(E)(4), p. 137.]

What is an assembly of equipment that permits a gas supplier to make a temporary connection to supply oxygen to a building that has had its normal source of oxygen disconnected?

Emergency Oxygen Supply Connection. EOSC (3.3.49, p. 71)

Oxygen, Carbon dioxide, Medical Air, WAGD & Nitrogen are all considered a medical support gas. T or F?

FALSE. WAGD is the discharge [5.1.1.3, p. 100.]

Dryers, filters and regulators should be at least duplexed. Under normal operation, airflow shall be divided equally through each device.

False. Each component should be sized to serve the peak calculated demand with the largest of each component out of service. [5.1.3.6.3.9 (E), p. 131.]

T or F? Medical air sources shall be connected to the medical air distribution system only and shall not be used for air in the application of human respiration and calibration of medical devices for respiratory application.

False. Medical Air is for human consumption ONLY [5.1.3.6.2, p.125]

Compressors shall be constructed of materials deemed suitable by the customer and the manufacturer. T or F?

False. Only the manufacturer deems what is suitable. [5.1.3.6.3.4.(D), p 129.]

If dryers, filters and regulators are sized to serve the peak demand they do not have to be duplexed. T or F?

False. These always need to be duplexed in case one fails.It can be replaced without shutting down pumps or compressors. [5.1.3.6.3.9(E), p. 130.]

In central supply systems using gas or liquid containers, each header shall have a/an _________ to prevent debris from entering the manifold controls and a _____ ____ ____ downstream of the nearest cylinder connection, but _____ of the point at which the header connects to the central supply system.

Filter; header shutoff valve, upstream [5.1.3.5.9(3), p. 116.]

Medical air filters shall be located immediately upstream of the _______________.

Final Line Regulator [5.1.3.6.3.8(4), p. 130.]

What is a device for measuring volumetric flow rates of gases and liquids?

Flowmeter (3.3.64, p. 73)

Each station outlet and inlet for medical gas or vacuum shall be

Gas Specific [5.1.5.1, p. 183]

What is a cylinder?

High-pressure gas vessel (3.3.33, p. 68)

Medical air should be used for ______________ and calibration of medical respiratory devices.

Human Respiration [5.1.3.6.2., p. 125.]

Medical air sources shall be used only for what purposes?

Human respiratory applications [5.1.3.6.2, p. 125.]

All Valves except zone valve box assemblies shall be _________; _____ & _________.

In a secure area; locked or latched; & above ceilings but unobstructed and accessible [5.4.1.1.2.(1-3), p. 177]

WAGD produced by a dedicated WAGD producer with a total power less than 1 horsepower in total (both producers) shall be located near the ______ served; and for air-cooled equipment, the WAGD source shall be located to maintain the _____ temperature range per manufacturer.

Inlet; ambient [5.1.3.8.1.4, p. 151]

What is an alternative for nitrogen used to drive tools, power columns, dry glassware, and so on?

Instrument Air (3.3.88, p. 77)

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LEFT BLANK INTENTIONALLY

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What is a container used for liquid oxygen not exceeding 1.5L (0.296) gal) specifically designed for use as a medical device as defined by 21USC 9, "Federal Food Drug & Cosmetic Act," that is intended for portable therapeutic use and to be filled from its companion base unit, which is a liquid oxygen base reserve container?

Liquid Oxygen Portable Container (3.3.29.2, p. 66-67)

What is a warning system that provides continuous visible and audible surveillance of medical gas and vacuum system source equipment at the equipment site?

Local Alarm (3.3.3.3. p. 62)

What visibly indicates the operating status of equipment?

Local Signal (3.3.101, p. 80)

Where liquid ring compressors with air-water separators are used, when the liquid level is above the design level, a sensor activates a(n) __________ alarm indicator.

Local [5.1.3.6.3.12(C) p.136.]

Manifolds for gas cylinders shall activate a _______ signal that visibly indicates the operating status of the equipment and shall activate an indicator at all _______ alarm panels when or at a predetermined set point before the secondary header begins to supply the system, indicating changeover has occurred.

Local; Master. [5.1.3.5.10.6, p. 118.]

What is a container?

Low-pressure gas vessel (3.3.29, p.67)

What is a warning system that monitors the operation and condition of the source of supply, the reserve source (if any), and the pressure in the main lines of each medical gas and vacuum piping system?

Master Alarm (3.3.3.4, p. 62)

What types of hazards does NFPA 99 specify shall be considered in the design, installation, testing, and maintenance of medical gas and vacuum piping systems?

Natural hazards, human events, or technological events. [12.5.3.1.2(1), p. 442.]

What type of gas do you use to purge med gas while being brazed?

Nitrogen NF [5.1.10.4.1.10, p. 210.]

Where shall pressure indicators be provided for medical gas systems?

On the main supply line at the Area Alarm downstream of Zone Valve [5.1.8.2.2 (1-3) p. 270]

What is the minimum number of compressors in an instrument air system that employs a standby header?

One (1) [5.1.13.3.7.4(2), p. 265]

The reserve header in a cryogenic liquid container system shall have sufficient gas cylinder connections for ____ average day's supply, but not fewer than ______ connections.

One (1); Three (3). [5.1.3.5.11.4 (2), p. 120.]

Relief valves should be vented to the_________, except for compressed air systems having less than 3000 cubic ft at STP.

Outside [5.1.3.5.6.1(4), p. 114.]

On which side of the Zone Valve Box should Area Alarms be installed?

Patient Side, Outlet Side downstream (5.1.9.4.4, p. 201)

Medical Gas Systems shall be deemed breached at the point of

Physical separation; intrusion; or by system component removal or addition. [5.1.12.1.4, p. 237.]

When Multiple buildings are served from a single cryogenic liquid oxygen source such that damage to interconnecting oxygen line could result in one or more buildings losing oxygen supply, each building must provide a separate_____ ______.

Separate emergency connection [5.1.3.5.13(2), p. 122.]

A shut off valve shall be placed at the immediate connection of each source system to the distribution piping system. What is this valve called?

Source Valve [5.1.4.2.1-2, p. 180]

All pressure relief valves shall be made of brass, bronze or _______ ; designed for the specific gas service; and have a relief pressure setting not higher than the maximum allowable _______ pressure of the component with the lowest ______ pressure rating in the portion of the system being protected.

Stainless Steel; working; working. [5.1.3.5.6.1(7), p. 113.]

T or F? The term "limited combustible" includes the term noncombustible in the 2021 code.

True [4.4.2.6, p. 99. And 4.4.1.2, p. 98]

An existing system that is not in strict compliance with the provisions of this standard shall be permitted to be continued in use so long as the authority having jurisdiction has determined that such use does not constitute a distinct hazard to life. T or F?

True [5.1.1.4, p. 100.]

T or F? When instrument air systems are provided with standby headers, the standby headers automatically serve the system in case of a failure.

True [5.1.13.3.7.6(4), p. 265]

Cylinder and cryogenic liquid container outlet connections shall be designed as to render the attachment point unusable when removal of the outlet connections attempted. T or F?

True [5.1.3.1.5, p 102.]

Cryogenic fluid central supply systems must comply with the rules related to electrical and power systems. T or F?

True [5.1.3.10, p. 105.]

T OR F? Manifolds for gas cylinders, manifolds for cryogenic liquid containers, cryogenic fluid central supply, and individual components on the oxygen side of concentration sources shall be allowed to be stored together in an outdoor enclosure.

True [5.1.3.3.1.1(1-4), p. 105.]

An in-building emergency reserve system can be substituted for the EOSC under certain conditions. T or F?

True [5.1.3.5.14.2, p. 124]

When vented to the outside relief valve vent lines shall be labeled in any manner that will distinguish them from the medical gas pipeline. T or F?

True [5.1.3.5.6.5, p. 115.]

Where charcoal absorbterm-42ers are required, a gaseous hydrocarbon indicator shall be provided.

True [5.1.3.6.3.12(4), p. 137]

Piping and components between the compressor and the source shutoff valve that do not contribute to contaminant levels are required for all medical air compressor systems. T or F?

True [5.1.3.6.3.2(6), p. 126.]

The exhaust of a medical vacuum must be placed away from public places or potential exposure to people. T or F?

True [5.1.3.7.7.2(1)-4, p. 148.]

T or F? The master alarm panel shall consist of two or more alarm panels; a centralized computer system with an alarm failure communication may be used as a substitute for one of the required master alarm panels provided certain conditions are met.

True [5.1.9.2.2, p. 194; 5.1.9.3, p. 199]

T or F? The source valve and all downstream piping and components, including writing to storage system alarms, shall be comply with NFPA 55?

True [N 5.1.3.10.1(C), p. 166.]

T OR F? Installers of bulk cryogenic liquid cylinders shall be qualified in accordance with one of two governing bodies: 1. CGA M-1 & 2. ASSE 6015.

True [N 5.1.3.10.2.1. p.166. ]

T OR F? Category 1 systems shall also be permitted to serve Category 2 and 3 spaces.

True. Because Category 1 contains the highest requirements [5.1.1.6, p. 101]

T OR F? Indoor locations for oxygen, nitrous oxide and mixtures of these gases shall not communicate with these 8 areas: 1. Critical Patient Care; 2. Anesthetizing locations; 3. Flammable storage; 4. Rooms w/ electrical contacts or transformers; 5. Combustible/flammage storage; 6. Engines; 7. Kitchens; & 8. Near open flames

True. [5.1.3.3.1.5.]

Louvered openings for natural ventilation shall have a minimum of ____ nonclosable louvered openings, each having a(n)____ aggregate opening of free space.

Two (2); 24 sq". [9.3.6.5.2.1, p 388.]

Manifolds for gas cylinders without reserve shall consist of _______ equal headers, each with an average days' supply, but not fewer than but not fewer than ______ connections.

Two (2); Two (2). [5.1.3.5.10.3, p. 117.]

How long must the initial pressure test for the piping of medical gasses and vacuum systems be maintained?

Until 100% of the joints have been examined for leakage. [5.1.12.2.3.5.]

The gas produced by evaporation from the secondary header in a cryogenic liquid container system shall enter the supply system _____ of the final line regulator.

Upstream [5.1.3.5.11.6, p. 121.]

Medical air supply systems shall be required to have _______ detectable liquid hydrocarbons.

Zero (0) or No [5.1.3.6.1(3), p. 125.]

Mains and branches in Medical Surgical Vacuum systems shall be not less than what size?

¾ inch NPS = 7/8OD [5.1.10.11.1.3, p. 220.]