10. Lesson 10. Irregularities in operation, causes and

faulty

неисправный

penetration

проникновение

cutoff valve

запорный (отсечный) клапан

valve disc

тарелка клапана

to shut down

выключить, остановить

to light

зажигать

sediment

осадок, отстой, отложение

Symptom:

Cause:

Remedy:

The water level in the boiler is rising

1. Faulty automatic water regulating arrangement.

1.Repair the automatic water regulating arrangement or change to manual control of the water level.

2.Penetration of solid particles under the water level regulator valve.

2.Shut off the cutoff feed valve, dismantle the water level regulator, remove the particles from the valve seat and the disc.

Loss of water level

1. Faulty automatic water level regulator.

l. Repair the regulator or change to manual control of the water level.

2. The blow down valves are not tight enough.

2. Shut down the boiler, let it cool, drain the boiler, repair or replace the valve.

3. The boiler tubes and manifolds are not tight.

3.Shut down the boiler for repairs.

4. Faulty feed pump.

4.Eliminate the fault and put the spare pump in operation.

Safety valve is closed

1. Steam pressure in the boiler is rising.

1. Lower the steam pressure to the required level.

2. Faulty safety valve.

2. Shut down the boiler, repair or replace the safety valve.

3. Wrong adjustment of the safety valve.

3. Adjust the safety valve to the required pressure.

The boiler won't light

1. There is some water in the fuel.

1. Drain the sediment out of the fuel tank.

2. Faulty oil – burning

arrangement.

2. Repair or replace the oil - burning arrangement.

Boiler automatic operation program is effected wrongly

Faulty automatic system.

Eliminate the fault or change to manual control.

1.

Boilers are used

depending on the size of the boiler.

2.

The steam may be used

for generating steam for main engines.

3

Water-tube boilers have replaced fire-tube boilers

causing the water to circulate round the system.

4.

Two or more furnaces may be fitted

for producing steam.

5.

Because the steam drum provides a reservoir of relatively cool water, convection currents are set up

for driving the main engines.

main stop valve

главный стопорный кран

to grind

притирать (клапан)

crack detection

дефектоскопия

in the course of

в ходе, в течение

automatic feed water system

система автоматического питания

automatic firing system

система автоматического регулирования горения