Hydraulic Locking (Hydrolock) Of Main Engine And Auxiliary Engines

Hydraulic Locking (Hydrolock) 
Hydrolocking is an abnormal condition of  reciprocating internal combustion engine. Hydraulic lock occurs when water, fuel or lube oil accumulates on top of the piston during engine is at rest , resulting in a condition where the  piston cannot complete its travel Since  the liquids being incompressible.

What Is The Difference Between Condenser And Heater/Cooler


Condensers
 >Condensers, as name suggest, which condenses vapors into liquid state . In other words condenser is a device which is used to transfer latent heat of condensation from vapor of a medium fluid to cooling fluid.

Starting Air Valve Leak Testing Main Engine


Starting Air Valve Leak Testing 
  • There are two methods to test the leakage of starting air valve in main engine.

What Is Circuit Breaker, Operation?

Circuit Breaker

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced,

What Is A Fuse, Working Principle And Types?

 A fuse is an essential device used in various electrical circuits which gives the protection from the over-current. It comprises a strip or a metal wire that dissolves when the heavy flow of current supplies through it.

Steam Traps And Its Functions


                  Steam trap is nothing but a special type of automatic valve that prevents the passage of steam but allows the condensate to flow through. Generally used in steam lines, they drain the condensate without affecting the steam. This helps in drawing all the energy from steam and thus utilizing its latent heat as the steam is contained in the heating line until it is fully condensed.

What Is Tie Rods? Diagram And Functions?



           Tie rod is a long rod with bolts at both the end which  hold the bedplate , frames and entablature firmly together in compression, and to transmit the firing forces back to the bedplate, long tie bolts are fitted through these three components and then tightened hydraulically.

Ship Earth Fault Indicators Working With simple Diagram

Earth Fault Indicators
          Ships 440V and 220V isolated system should have insulation indicators in order to indicate the presence of earth fault in the system. Generally two types of earth fault indicators are fitted onboard, Earth fault indication Lamps and An instrument showing Insulation with respect to the earth (Ohm meter). 

Cold Starting /Warming Up/ Initial Starting and Stopping Procedure for Boiler

Cold Starting or Warming Up or Initial Starting Of Boiler
         Cold starting means starting off the boiler from a state of comparatively lower temperature and pressure than normal working values. In other way we can say that cold starting is  starting the boiler for the first time in its lifespan. It is ,indeed a very critical operation because the variation in temperature and pressure may lead to thermal stress resulting in cracks of tubes. Below you can find the step wise procedure of cold starting

Short cycling in Refrigeration system, Causes, Remedies

Short cycling in Refrigeration system, Causes, Remedies
 Continuous starting and stopping of the  compressor is called short cycling in refrigeration system. Plainly speaking short cycling means the constant repetition of refrigeration cycles within short intervals. This may be  caused by a low pressure cut out or high suction pressure cut in, during short time interval.