med gas

Question 1

what two types of copper tube can be used for medical gas piping?

Answer 1

type L and type K

Question 2

what is the minumum size of copper tube permitted for medical gas distribution piping?

Answer 2

1/2”

Question 3

medical gas piping must be free of ______ or ________ that could combine with the contents resulting in an explosion or fire

Answer 3

oil, grease,

Question 4

small diameter piping under 1/2” may be joined using

Answer 4

threaded fittings

Question 5

the approved method of joining copper tube and fittings must be joined using

Answer 5

silver brazing

Question 6

flux is permitted when joining ________ metals

Answer 6

dissimilar

Question 7

what gas must be present in the pipiing system while joints are being brazed?

Answer 7

nitrogen

Question 8

what is the maximum horizontal support spacing for 1/2” pipe?

Answer 8

1.8m

Question 9

what is the maximum horizontal support spacing for 3/4” pipe?

Answer 9

2.4m

Question 10

colour coding for exygen pipie is ______ lettering with a _______ background

Answer 10

green lettering/ white background

Question 11

colour coding for nitrogen piping is _____ lettering with a ____ background

Answer 11

black lettering/ white or silver background

Question 12

the approved cleaning materials for degreasing copper tube and fittings are ______ and ______

Answer 12

trisodium phosphate and sodium carbonate

Question 13

what temp must water be when used for cleaning and rinsing copper tube and fittings?

Answer 13

HOT

Question 14

what is the minimum test pressure for medical gas distribution system?

Answer 14

1030kpa 150psi

Question 15

what is the maximum test pressure for a medical vacuum system?

Answer 15

415kpa 60psi

Question 16

what is the minimum test pressure for nitrogen system designed to operate at 120 psi

Answer 16

120 x 1.5 = 180psi

Question 17

during the 24 hour test, is any pressure fluctuation permitted ina medical gas piping system?

Answer 17

a pressure change during the 24 hour test of a medical gas piping system is only allowable if it is caused by a change in ambient temp in the areas around the medical gas piping

Question 18

to complete a cross connection test on each medical gas piping system individually, the piping is pressurized to 345kpa 50psi using ______ or ________

Answer 18

oil free dry air or oil free nitrogen

Question 19

each system must be tested at every

Answer 19

terminal unit

Question 20

all medical gas piping systems and medical vacuum systems must be provided with a _________ in case of power failure or low supply in the primary system

Answer 20

back up system