3 Metro Cng Buses

Question 1

Where are metro bus CNG tanks filled

Answer 1

At the Bladensburg rd. Facility

Question 2

Where are metro Bus cng tanks located

Answer 2

On the roof of the bus

Question 3

How many CNG tanks are located on the roof of the metro bus

Answer 3

7

Question 4

Metro Bus CNG tanks operate at what PSI

Answer 4

3600 psi the range varies with the ambient temp. From 3400psi cold to 4000psi warm

Question 5

Is CNG lighter or heavier than air

Answer 5

Lighter

Question 6

What are the dimensions of a metro bus cng tank

Answer 6

120” long, 15.9” in diameter

Question 7

What is the weight of a metro bus CNG tank

Answer 7

269lbs

Question 8

How many PRD’s (pressure relief devices) are located on the metro bus

Answer 8

8

Question 9

Where are the PRD’s located

Answer 9

In the roof area

Question 10

When will the PRD,s activate on the metro bus

Answer 10

At 5400psi or when tank is heaed to 220°f

Question 11

How many methane sensors are located on the metro bus

Answer 11

4

Question 12

Where are the metro bus methane sensors located

Answer 12

2 in the tank compartment, 2 in the engine compartment

Question 13

How many methane sensore alert modes are there on a metro bus

Answer 13

2

Question 14

What are the 2 methane sensor alert modes

Answer 14

Trace and significant

Question 15

What will happen if a metro bus methane sensor alerts mode is significant

Answer 15

The engine will shut off

Question 16

CNG will burn what color flame

Answer 16

Orange

Question 17

When will the temperature sensors on a Metro Bus relese an extinguishing agent

Answer 17

When temps reach 280°f

Question 18

Where is the fuel compartment located on a metro CNG bus

Answer 18

The rear right side of the bus

Question 19

What is the flash point of CNG

Answer 19

560°f

Question 20

How far should ignition sources be removed for minor CNG leaks

Answer 20

100 feet

Question 21

How far should ignition sources be removed from major CNG leaks

Answer 21

300 feet