June 2011 ~ engineering information technology

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Water Treatment & Boiler Water Treatment

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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Fire Fighting Appliances

Rules	Explanation and Clarification
1.1 Fire pumps 1.1.1 Every river-sea vessel under this Notification shall be provided with at least one independent power-operated fire pump of capacity not less than 70 cbm/hour. 1.1.2 Every fire pump shall be arranged to draw water directly from sea and discharge into a fixed fire main. 1.1.3 Centrifugal pumps or other pumps connected to the fire main through which back flow could occur shall be fitted with non-return valves. 1.1.4 In river-sea vessels under this Notification, if a fire in any one compartment could put all the fire pumps out of action, there shall be provided in a position outside such spaces an independently driven emergency fire pump which shall comply with the requirements of 1.1.1 The emergency fire pump shall be capable of producing at least a jet of water of not less than 6 m from one hydrant and hose through a nozzle complying with the requirements of 1.3. 1.1.5 Where the fire pumps are capable of developing a pressure exceeding the design pressure of the fire mains, water service pipes, hydrants and hoses, relief valves shall be fitted. Such valves shall be so placed and adjusted as to prevent excessive pressure in the fire main system. 1.1.6 The pumps required for the provision of water for other fire extinguishing systems required by this Annex, their sources of power and their controls shall be installed outside the space or spaces protected by such systems and shall be so arranged that a fire in the space or spaces protected will not put any such system out of action.	Objectives Expert Speak
1.2. Fire main, water service pipes, fire hydrants and fire mains 1.2.1 In every river-sea vessel under this Notification a fire main of 65 mm size shall be laid with isolating valve on the weather deck for feeding any or all fire hydrants. 1.2.2 In every river-sea vessel under this Notification, the number and position of hydrants shall be such that at least one jet of water from a single length of hose can reach any part of the river-sea vessel normally accessible to the crew while the river-sea vessel is being navigated and any part of any cargo space when empty. Furthermore, such hydrants shall be positioned near the accesses to the protected spaces. 1.2.3 Material readily rendered ineffective by heat shall not be used for fire main and hydrants unless adequately protected. The pipes and hydrants shall be so placed that the fire hoses may be easily coupled to them. 1.2.4 In river-sea vessels where deck cargo may be carried, the position of the hydrants shall be such that they are always accessible and the pipes shall be arr

Rules

Explanation and Clarification

1.1 Fire pumps

1.1.1 Every river-sea vessel under this Notification shall be provided with at least one independent power-operated fire pump of capacity not less than 70 cbm/hour.

1.1.2 Every fire pump shall be arranged to draw water directly from sea and discharge into a fixed fire main.

1.1.3 Centrifugal pumps or other pumps connected to the fire main through which back flow could occur shall be fitted with non-return valves.

1.1.4 In river-sea vessels under this Notification, if a fire in any one compartment could put all the fire pumps out of action, there shall be provided in a position outside such spaces an independently driven emergency fire pump which shall comply with the requirements of 1.1.1

The emergency fire pump shall be capable of producing at least a jet of water of not less than 6 m from one hydrant and hose through a nozzle complying with the requirements of 1.3.

1.1.5 Where the fire pumps are capable of developing a pressure exceeding the design pressure of the fire mains, water service pipes, hydrants and hoses, relief valves shall be fitted. Such valves shall be so placed and adjusted as to prevent excessive pressure in the fire main system.

1.1.6 The pumps required for the provision of water for other fire extinguishing systems required by this Annex, their sources of power and their controls shall be installed outside the space or spaces protected by such systems and shall be so arranged that a fire in the space or spaces protected will not put any such system out of action.

Objectives

Expert Speak

1.2. Fire main, water service pipes, fire hydrants and fire mains

1.2.1 In every river-sea vessel under this Notification a fire main of 65 mm size shall be laid with isolating valve on the weather deck for feeding any or all fire hydrants.

1.2.2 In every river-sea vessel under this Notification, the number and position of hydrants shall be such that at least one jet of water from a single length of hose can reach any part of the river-sea vessel normally accessible to the crew while the river-sea vessel is being navigated and any part of any cargo space when empty. Furthermore, such hydrants shall be positioned near the accesses to the protected spaces.

1.2.3 Material readily rendered ineffective by heat shall not be used for fire main and hydrants unless adequately protected. The pipes and hydrants shall be so placed that the fire hoses may be easily coupled to them.

1.2.4 In river-sea vessels where deck cargo may be carried, the position of the hydrants shall be such that they are always accessible and the pipes shall be arr

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

importance of automation

automation importance

Parts that generally need attention

Boiler Automation
Engine Remote Control
Bridge Control
Engine Alarm Systems
Engine Safety Systems
Inert Gas Control and Automation
Steering Gear Controls
Lift Controls
Oil Discharge Monitoring Systems
Anti Corrosion Systems
Cargo Control Systems
Fire Alarm Systems

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

electrical maintenance in general

Parts that generally need attention

Switch Boards
Power Generators /Alternators
Voltage Regulators
Starter Panels
Power Distribution Lines
Cables
Electric Motors
Electric Installations

Problems most often observed

Burnt Out Alternators / Motors
Water Damaged Cables and Panels
Grounding And Short circuit
Insulation Ageing
Sea Water Damaged Deck Cables and Cable Trays

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

while docking things to know and check.

While docking the important things to check....

Docking Services / Parts that generally need attention

Blasting and painting of hull - superstructure - Deck - Hatches & Covers - Pipelines
Ship Collision Repair
Cleaning of ER Bilges - Tanks - Accommodation
Special coating to Ballast Tanks - Cargo Tanks - Storage Tanks - Fresh Water Tanks
Steel Renewal
Piping
Propeller & Shaft
Valves, Winches

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

resin choking of an machinery

Alignment & Chocking, a critical operation in ship repairs, used to be a formidable job, until the introduction of pourable resin chocks (marine epoxy resin compounds).

General :: Chockfast Orange, Red, Blue, Black - the best known pourable resin chocks in the industry. (agents for ITW Philadelphia Resins)

Parts that generally need attention

Main Engines
Auxiliary Engines and alternators
Steering gear
Winches
Pumps
Machine Tools
Crane Rails

Problems most often observed

Misalignment
Overheating of foundations
Retrofits and new installations
Concrete Foundation Cracked / Destroyed by Oil

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

fuel equipment maintenance !!

Maintenance of fuel equipment !

Parts that generally need attention

Fuel Injector Service
Fuel Nozzles
Fuel Valves
Fuel Pumps
HP Fuel Piping
For Main Engines and Auxiliary Engines

Problems most often observed
Incomplete Combustion
Carbon Formation in Cylinders/Exhaust Valves
Insufficient Oil Pressure
Leaking Fuel Pumps
High Exhaust Temperatures
High Fuel consumption
Fuel Contamination in Lube Oil through Camshaft Housing

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

turbocharger maintenance

Some of the important points while doing turbocharger overhaul or inspection.

Parts that generally need attention

Rotor assembly
Turbine blades
Compressor Wheel
Shaft Journal
Compressor Turbine Journal Bearings
Lube Oil Pump
Nozzle & Guide Ring
Casings

Most common problems

Worn bearings
Disturbed lubrications
Clogging of nozzle ring

..............

                                   .::ManindarKumar::.

          .::"I have no money, no resources, no hopes. I am the happiest man alive !"::.

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engineering information technology

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ships design

Click HERE to See The Pics

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Water Treatment & Boiler Water Treatment

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Fire Fighting Appliances

Fire Fighting Appliances

importance of automation

electrical maintenance in general

while docking things to know and check.

resin choking of an machinery

fuel equipment maintenance !!

turbocharger maintenance

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