Showing posts with label boiler. Show all posts
Showing posts with label boiler. Show all posts

some important books to read

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Boiler Water Gauge JGV_1600-1.pdf
Boiler feed system.pdf
Ballast and cooling water system operations Appendix1I.pdf
Association Between Neutral-to-Earth and Cow Contact Voltage on New York Dairy Farms.pdf
APV DESMI CARL BRO optimisation of pump- and cooling water systems.pdf
AMSA225.pdf
A-ISOMETER-ShipsOffshore_PROSP_en.pdf
aaop action against oil pollution.pdf
Aabofullpaper.pdf
3propeller shaft components.pdf
Meo Examination Part-check list.pdf
algates.ppsx

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Boiler_accesories

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How do you blow through a boiler gauge glass?

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How do you blow through a boiler gauge glass?

How do you blow through a boiler gauge glass?
GAUGE GLASS IS CONNECTED EITHER DIRECTLY TO THE BOILER OR MOUNTED IN A HOLLOW COLUMN
GAUGE GLASS DIRECTLY CONNECTED TO THE BOILER SHELL
GAUGE GLASS MOUNTED IN A HOLLOW COLUMN

EACH HAVE A PROCEDURE OF BLOWING THROUGH TO ENSURE THAT GAUGE GLASS IS SHOWING THE CORRECT BOILER WATER LEVEL AND ANY PASSAGES OR COCKS WERE NOT BLOCKED



GAUGE GLASS MOUNTED DIRECTLY TO THE BOILER

DURING NORMAL OPERATION
§  STEAM COCK OPEN
§  WATER COCK OPEN
§  DRAIN COCK SHUT






TEST STEAM COCK
§  STEAM COCK OPEN
§  WATER COCK SHUT
§  DRAIN COCK OPEN
'IF NO STEAM EXITS DRAIN THEN STEAM COCK OR UPPER PASSAGE BLOCKED'







TEST WATER COCK
§  STEAM COCK SHUT
§  WATER COCK OPEN
§  DRAIN OPEN
'IF NO WATER EXITS DRAIN THEN WATER COCK OR LOWER PASSAGE BLOCKED'








TEST DRAIN COCK
§  STEAM COCK OPEN
§  WATER COCK OPEN
§  DRAIN COCK OPEN
IF NO STEAM OR WATER EXITS DRAIN THEN THE DRAIN COCK MAYBE BLOCKED







GAUGE GLASS MOUNTED IN A HOLLOW COLUMN

DURING NORMAL OPERATION
§  STEAM COCK A & B OPEN
§  WATER COCK C & D OPEN
§  DRAIN SHUT





TESTING STEAM COCKS
§  STEAM COCK A & B OPEN
§  WATER COCK C & D SHUT
§  DRAIN COCK OPEN
'IF NO STEAM EXITS DRAIN THEN STEAM COCKS A & B OR UPPER PASSAGE BLOCKED'






TESTING WATER COCKS
§  STEAM COCK A & B SHUT
§  WATER COCK C & D OPEN
§  DRAIN OPEN
'IF NO WATER EXITS DRAIN THEN WATER COCKS A & B OR LOWER PASSAGE BLOCKED'







CROSS TEST 1
§  STEAM COCK A OPEN & B SHUT
§  WATER COCK D OPEN & C SHUT
§  DRAIN COCK OPEN
'IF NO STEAM EXITS DRAIN THEN COCKS A & D OR CROSS PASSAGE PASSAGE BLOCKED'







CROSS TEST 2
§  STEAM COCK B OPEN & A SHUT
§  WATER COCK C OPEN & D SHUT
§  DRAIN COCK OPEN
'IF NO WATER EXITS DRAIN THEN COCKS  B & C OR CROSS PASSAGE PASSAGE BLOCKED'







TESTING DRAIN COCK DRAIN
§  STEAM COCK A OPEN & B OPEN
§  WATER COCK D OPEN & D OPEN
§  DRAIN COCK OPEN

'IF NO STEAM OR WATER EXITS DRAIN THEN THE DRAIN COCK MAYBE BLOCKED'
..............
M❤K
.::"A COMMON MAN WITH A COMMON THOUGHT'S !"::.

Why is Boiler water treatment required? oral answer

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1.      
Why is Boiler water treatment required?

Purpose and Objectives

Following are the objectives of boiler water testing.

1. To prevent scale formation in the boiler.

2. To prevent corrosion in the boiler feed system by maintaining the boiler water's alkaline condition.

3. To remove dissolved gases such as oxygen from water.

4. To control sludge formation, thus preventing carry over into the system.

5. To determine the amount of impurities and thereby determining the amount of treatment required.

6. To maintain and provide residual reserve of chemicals.

7. To improve efficiency, thus increasing boiler life.

8. For economical operation of boiler.

9. To exercise careful control over boiler treatment chemicals.

..............
M❤K
    .::"A COMMON MAN WITH A COMMON THOUGHT'S !"::.

Marine Engineer Books

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Marine Engineer Books and Notes :


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Water Treatment & Boiler Water Treatment

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WATER TREATMENT

What happens when a piece of metal is immersed in water?

CORROSION!

What happens to a surface where water is allowed to evaporate?

SCALE!

The reason to treat Water is to avoid or reduce Scale

Boiler Water Treatment

Reasons to treat boiler water:

Avoid scale and corrosion by eliminating:

Dissolved gases

Hardness salts

Various pollutants (oil, acids, mud etc.)

Heat transfer surface; boiler tubes

Boiler tubes must be kept clean for safe and reliable operation

Water Chemistry

Hardness salts

Magnesium and Calcium react with CO2 forming

Calcium carbonate and -bicarbonate

Magnesium carbonate and -bicarbonate

In hot boiler water, the hardness salts may crystallize and adhere to hot

surfaces forming insulating scale.When chemically treated, the hardness

salts form a sludge easily disposed of by blowdown.

Low Condensate pH -absorbed CO2

Chemical Treatment

Neutralising amines

Avoid leakages in the condensate system

Increase hotwell temperature

Dissolved gases

Carbon dioxide, CO2

Oxygen, O2

CO2 and O2 are present in air that is absorb by water. The amount of gases

present in water is dependent on the water temperature. In steam systems,

without treatment CO2 and O2 will lead to corrosion.

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