GAS

Question 1

GAS
Add 2
What are the 2 sensors the ALTAIR is equipped for?

Answer 1

GAS
and
OXYGEN

Question 2

GAS
Add 2

How will you know the ALTAIR is operating properly while air monitoring?

Answer 2

Vibrate
and 
Flashing GREEN LIGHT 
every 
30 seconds

Question 3

GAS
Add 2

The NORMAL reading on the ALTAIR in FRESH AIR?

Answer 3

LEL 0.0%

O2 20.8%

Question 4

GAS
Add 2

When will the ALTAIR alarm?

Answer 4

LEL 10%

O2 19.5% (oxygen deficient)
02 23.5% ( oxygen enriched)

Question 5

GAS
Add 2

A series of XXX under the COMB/EX on the ALTAIR would indicate?

Answer 5

atmosphere is

ABOVE 100% LEL

Question 6

GAS
Add 2
Three large +++ in the O2 icon on the ALTAIR will indicate?

Answer 6

Atmosphere is

ABOVE 30% OXYGEN

Question 7

GAS
Add 2
In which atmosphere would the LEL sensor on the ALTAIR, NOT have accurate reading?

Answer 7

Oxygen DEFICIENT atmosphere

Question 8

GAS

What is considered INTRINSICALLY safe to use in a potentially explosive atmosphere?

Answer 8

• Gas Detectors
• Gas Meters
• H/T
• Flashlights (FDNY issued)

Question 9

Gas

Depending on the mixture the explosive range is?
Gas is Toxic or Non Toxic?

Answer 9

5%-15%

Non Toxic

Question 10

Gas
EP Nat Gas 5

Indications of a MAJOR GAS EMERGENCY when:
How much LEL is detected

Outside a structure?

Inside a structure?

In an UNVENTED subsurface structure?

Answer 10

10% LEL (outside)

10% LEL (inside)

20% LEL (subsurface manhole/sewer)

Question 11

Gas
EP Natural Gas 5
Gas present in how many subsurface structureS would indicate a Major Gas Emergency?

Answer 11

2 or MORE

Manholes,sewer etc

Question 12

EP Gas 4.3

Which Distribution Mains are made of steel,plastic, or if older cast iron?

Answer 12

Medium and low pressure mains

High Pressure are made of STEEL

Question 13

EP GAS

Which Distribution Mains have control valves?

Answer 13

High and Medium pressure

Question 14

EP GAS pg 8
Who’s MAIN VALVES have tags w/ ID number inside the valve cover?

Who’s MAIN VALVES are identified by an ID # stamped on North side of collar?

National Grid or Con Ed

Answer 14

Con Ed ID #’s on tags

National Grid ID# stamped on North Side of collar

Question 15

EP GAS 4.4

A “NC” stamped on a tag near the service meter indicates?

An “EFV” stamped on a tag near the service meter indicates?

Answer 15

NC indicates NO CURB VALVE or SERVICE VALVE

EFV indicates an excess flow valve
EFV should limit or stop excess flow down pressure from it

Question 16

EP GAS 4.4.1

Which valve if installed on the outside of a building does not require a curb valve or service valve?

Answer 16

Exterior Gas Service Valve is present no curb/service valve is required

Question 17

EP GAS 4.4.2
Peck Vents are installed on which type of pressure outputs?
Color of Peck vent?

Answer 17

Medium OR High pressure

Red Cap

Question 18

EP Gas 4.4.2

Service Regulators are usually located ——- the gas meter on —— and —- pressure systems?

Answer 18

Before
Medium AND High Pressure

*reduces gas to low pressure (1/4 psi)