What type of fire suppression system has closed heads, is full of water, and is under pressure at all times?
a. Dry pipe.
b. Wet pipe.
c. Deluge.
d. Foam. - ANS b. Wet pipe
In a wet-pipe sprinkler system, what causes the clapper valve to open?
a. One or more heads opening.
b. ...
What type of fire suppression system has closed heads, is full of water, and is under pressure at
all times?
a. Dry pipe.
b. Wet pipe.
c. Deluge.
d. Foam. - ANS b. Wet pipe
In a wet-pipe sprinkler system, what causes the clapper valve to open?
a. One or more heads opening.
b. Manual operation of a pull station.
c. High steady inlet water pressure.
d. Malfunctioning of the water motor alarm. - ANS a. One or more heads opening
What is the first step in restoring a wet-pipe sprinkler system?
a. Notify building occupants.
b. Clean up water damage.
c. Replace damaged heads.
d. Open main control valve to fill system. - ANS c. Replace damaged heads.
When restoring a wet-pipe sprinkler system, any trapped air can be bled off by
a. using the inspector's test valve.
b. slowly opening the main water-control valve.
c. using the bleed valve on the alarm valve clapper.
d. opening the alarm line strainer. - ANS a. Using the inspector's test valve.
What should you do if false alarms are being caused by pressure surges?
a. Relieve trapped air pressure.
b. Eliminate water pressure.
c. Add water pressure
d. Add air pressure. - ANS a. Relieve trapped air pressure.
What are the two types of quick-opening devices in a large dry-pipe system?
a. Mechanical and pneumatic.
b. Releasers and accelerators.
c. Exhausters and releasers.
, d. Accelerators and exhausters. - ANS d. Accelerators and exhausters.
How long should it take to recharge a dry-pipe system during restoration?
a. 15 minutes.
b. 30 minutes.
c. 45 minutes
d. 1 hour. - ANS b. 30 minutes.
When inspecting a dry-pipe sprinkler system, record and compare to previous readings the air
and water pressures and
a. humidity
b. temperature
c. time of day
d. time of inspection - ANS b. temperature
How do you correct occasional trips in dry-pipe systems caused by water surges?
a. Decrease water pressure.
b. Increase water pressure
c. Decrease air pressure.
d. Increase air pressure. - ANS d. Increase air pressure.
What type of fire suppression system has open sprinkler heads, and the system piping is under
surrounding atmospheric pressure? a. Dry pipe.
b. Wet pipe
c. Deluge.
d. Dry chemical. - ANS c. Deluge.
What are the two possible positions of the differential deluge valve?
a. On and off.
b. Open and closed.
c. Standby and fire.
d. Standby and activated. - ANS c. Standby and fire.
What is used to test heat-actuated devices (HAD) in an explosive atmosphere?
a. Electric heater.
b. Open flame.
c. Hot water or hot cloth.
d. Heat gun with special shield. - ANS c. Hot water or hot cloth
When a deluge fire sprinkler system is operational, the main water control valve is
a. open and the alarm valve to control devices is open.
b. closed and the alarm valve to control devices is open.
c. open and the alarm valve to control devices is closed
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller DocLaura. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.39. You're not tied to anything after your purchase.
