NFPA 99 2021 Worksheet #4 Questions and Answers
A WAGD source system shall activate the _____ alarm when the backup or lag producer is
running.
A. Local
B. Area
C. Master
D. Local and Master ** Answ** A. Local
A category 1 dedicated WAGD source shall consist of _____ or more producers, each shall be
sufficient to serve the peak calculated demand.
A. 1
B. 2
C. 3
D. All of the above ** Answ** B. 2
Additional WAGD products shall be _____ activated when they producer(s) in operation is(are)
incapable of maintaining the required vacuum.
A. Manually
B. Automatically
C. Either A or B
D. None of the above ** Answ** B. Automatically
Category 1 medical-surgical vacuum sources shall consist of an automatic means to prevent
_____.
A. Vacuum
, B. Back pressure
C. Backflow
D. All of the above ** Answ** C. Backflow
Category 1 medical-surgical vacuum sources shall, at a minimum, consist of _____ or more
vacuum pumps.
A. 3
B. 2
C. 1
D. 4 ** Answ** B. 2
Category 1 medical-surgical vacuum systems shall activate which alarms when the backup or lag
pump in running?
A. Master
B. Area
C. Local
D. All of the above ** Answ** C. Local
Is WAGD is produced by the medical-surgical vacuum source, the total concentration of
oxidizers of oxygen (%O2) shall be maintained below _____percent.
A. 23.6%
B. 19.5%
C. 15.5%
D. 21.5% ** Answ** A. 23.6%
If the WAGD system is joined with the medical-surgical vacuum piping, it shall be connected at
a minimum distance of _____ feet from any vacuum inlet.
A WAGD source system shall activate the _____ alarm when the backup or lag producer is
running.
A. Local
B. Area
C. Master
D. Local and Master ** Answ** A. Local
A category 1 dedicated WAGD source shall consist of _____ or more producers, each shall be
sufficient to serve the peak calculated demand.
A. 1
B. 2
C. 3
D. All of the above ** Answ** B. 2
Additional WAGD products shall be _____ activated when they producer(s) in operation is(are)
incapable of maintaining the required vacuum.
A. Manually
B. Automatically
C. Either A or B
D. None of the above ** Answ** B. Automatically
Category 1 medical-surgical vacuum sources shall consist of an automatic means to prevent
_____.
A. Vacuum
, B. Back pressure
C. Backflow
D. All of the above ** Answ** C. Backflow
Category 1 medical-surgical vacuum sources shall, at a minimum, consist of _____ or more
vacuum pumps.
A. 3
B. 2
C. 1
D. 4 ** Answ** B. 2
Category 1 medical-surgical vacuum systems shall activate which alarms when the backup or lag
pump in running?
A. Master
B. Area
C. Local
D. All of the above ** Answ** C. Local
Is WAGD is produced by the medical-surgical vacuum source, the total concentration of
oxidizers of oxygen (%O2) shall be maintained below _____percent.
A. 23.6%
B. 19.5%
C. 15.5%
D. 21.5% ** Answ** A. 23.6%
If the WAGD system is joined with the medical-surgical vacuum piping, it shall be connected at
a minimum distance of _____ feet from any vacuum inlet.
