Steam Bhg B Paper 1

Steam Cert 2nd Grade Bahagian B Paper I

Mei 2017

Soalan 1

Discuss dangerous boiler condition and reason

a) Low water

b) Furnace explosion

c) Poor water quality 

Soalan 2

3 factors lead to tube failure in WTB

4 sebab steam starvation in superheater tube

Soalan 3

Kenapa blowdown valve to be open slowly

Kemungkinan yg berlaku jika water level move up & down Di sight glass

Advantage & disadvantage high turndown burners

Soalan 4

Terangkan

Priming carryover

Foaming carryover

How to prevent priming & foaming

Soalan 5

Describe:

Combustion

Control of air supply

Mixing of air & fuel

Temperature required for combustion 

Time required for combustion  

Soalan 6

Explain water hammer & bagaimana berlaku

5 kesan water hammer 

Soalan 7

Jelaskan ttg steam condenser 

Terangkan 2 jenis steam condenser

Soalan 8

Describe: 

Positive displacement pump

Centrifugal pump