FF OPS BULL 3 METRO BUSES

Question 1

How many CNG buses by end of 2002?

Answer 1

140

Question 2

Fill location for CNG buses in DC?

Answer 2

Bladensburg Road

Question 3

What DOT tests have buses passed?

Answer 3

DOT including acid drip, 30 mph crash, 45 degree drop, and fire and heat test

Question 4

How many tanks on CNG bus?

Answer 4

7 TANKS

Question 5

CNG tank pressure?

Answer 5

3600 nominal, 3400-4000 full depending on temperature

Question 6

CNG lighter or heavier than air?

Answer 6

lighter

Question 7

Length of Metro CNG tank?

Answer 7

120 inches

Question 8

Diameter of Metro CNG tank?

Answer 8

15.9 inches

Question 9

Metro CNG tank weight?

Answer 9

269 lbs

Question 10

How many CNG PRDs?

Answer 10

8 in roof area

Question 11

Pressure Relief Devices activate…

Answer 11

at 5400 psi or 220F

Question 12

How many methane sensors on CNG bus?

Answer 12

4: 2 in roof compartment, 2 in engine compartment

Question 13

Modes of operation for methane sensors?

Answer 13

trace and significant. significant auto s/o engine.

Question 14

CNG burns with a _____ flame.

Answer 14

ORANGE

Question 15

On board extinguishing system activates at

Answer 15

280 F, or manually by driver

Question 16

CNG has flash point of

Answer 16

560 F

Question 17

minor leak of CNG isolate

Answer 17

100 feet

Question 18

major leak of CNG isolate

Answer 18

300 feet

Question 19

High pressure leaks will first be noticed by their

Answer 19

sound

Question 20

low presssure leaks will first be noticed by their

Answer 20

odor

Question 21

Fuel shutoffs are located at

Answer 21

right rear of bus (1) and at each tank (7)

Question 22

What type of valve are fuel shut offs

Answer 22

90 degree cutoffs