WS 5

Question 1

Each station outlet/inlet for medical gas or vacuum shall be ____.

Answer 1

Gas-specific.

Question 2

Each station outlet shall consist of a(n) ____ valve and a secondary valve (or assembly).

Answer 2

Primary.

Question 3

Each station inlet shall consist of a primary valve (or assembly) and hall be permitted to include a(n) _____ valve (or assembly)

Answer 3

Secondary.

Question 4

Station outlets in systems having nonstandard operating pressures shall be ____ where a single gas is piped at more than one operating pressure.

Answer 4

Pressure-specific.

Question 5

Station outlets that operate at a pressure in excess of ____ shall be either D.I.S.S. or be designed to relieve pressure prior to removal of the adaptor.

Answer 5

80 psi.

Question 6

Station inlets for WAGD service shall not be ____ with any other systems.

Answer 6

Interchangeable.

Question 7

The standing pressure test for manufactured assemblies shall be permitted to use any testing method that will ensure a pressure decay of less than ____.

Answer 7

1% in 24 hours.

Question 8

Manufactured assemblies employing flexible hose shall use hose and flexible connectors with a minimum burst gauge pressure of ____.

Answer 8

1,000 psi.

Question 9

Manufactured assemblies shall have a flame spread index of no greater than ____ when tested in accordance with ASTM E 84.

Answer 9

200.

Question 10

Station outlet/inlets of manufactured assemblies that employ flexible hose or flexible connectors to the piping system, that are not fully and immediately accessible, shall use ___ connectors.

Answer 10

D.I.S.S.

Question 11

MGR assemblies shall be made of materials with a melting point of at least ____.

Answer 11

1,000 degrees F.

Question 12

The scale range or positive pressure analog indicators shall be such that the normal operating pressure is within the ____ of the total range.

Answer 12

Middle third.

Question 13

The accuracy of the digital indicators shall be +-_____ percent of the operating pressure at which they are used.

Answer 13

5.

Question 14

The scale range of vacuum indicators shall be ____ gauge HgV.

Answer 14

0-30”

Question 15

The rated accuracy of pressure indicators used for testing shall be ____ percent (full scale) or better at the point of reading.

Answer 15

1%

Question 16

Pressure/vacuum indicators shall be readable from a ____ position.

Answer 16

Standing.

Question 17

Pressure/vacuum indicators shall be provided adjacent to the ____ device for source main line pressure and vacuum alarms in the master alarm system.

Answer 17

Alarm-powering,
Alarm initiating, and
Alarm resetting.

Question 18

To facilitate service, testing or replacement, all pressure switches and mainline gauges downstream of the source valve shall be provided with a ____.

Answer 18

Demand check fitting.

Question 19

Since dew point and carbon monoxide monitors are located upstream of the source valve, demand check fittings are not required. True or false?

Answer 19

False.

Question 20

The manufacturer shall provide documentation certifying the performance, and successful completion of all pressure testing. True or false?

Answer 20

True.

Question 21

Openings in the MGR not occupied by station outlets/inlets, shall be capped or plugged so that a special tool is required for removal. True or false?

Answer 21

True.

Question 22

Gas specific demand check fittings shall not be required on zone valve pressure indicators. True or false?

Answer 22

True.

Question 23

MGR assemblies shall connect to the ____ through _____ that are brazed to the pipeline.

Answer 23

Pipeline; fittings.

Question 24

Station outlets or inlets shall be placed at the ends of the MGR assemblies. True or false?

Answer 24

False.