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PRESSURE VACUUM VALVE
PRESSURE- VACUUM VALVE OR PV VALVE ARE A SAFETY EQUIPMENT USED IN TANKER SHIP TO PROTECT THE CARGO HOLDS FROM OVERPRESSURE OR VACUUM CONDITION. BUT BEFORE WE CONTINUE WE SHOULD […]
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STIFF AND TENDER SHIP
WE KNOW THAT:- MOMENT OF STATICAL STABILITY= W*GZ TONNES METRES WHERE W = DISPLACEMENT OF SHIP IN TONNES GZ= RIGHTING LEVER […]
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FREE SURFACE EFFECT
BALLASTING, DEBALLASTING, BUNKERING AND CONSUMPTION OF FUEL AND TAKING AND CONSUMING OF WATER ARE ALL PART OF DAILY WORK ON SHIP. DUE TO THIS THE QUANTITY OF FLUID INSIDE THE […]
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WELDING DEFECTS
OVERLAP :- IT IS CAUSED BY OVERFLOW OF WELD METAL WITHOUT FUSION OVER THE PARENT METAL. UNDERCUT:- GROOVE/CHANEL ALONG THE TOE OF WELD CAUSED BY WASTAGE OF PARENT METAL DUE […]
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RUDDER CHECKS AND INSPECTION
RUDDER INSPECTIN IS CARRIED OUT IN DRYDOCK TO CHECK ITS INTEGRITY IS STILL INTACT OR NOT. FOLLOWING CHECKS ARE CARRIED OUT IN RUDDER:- WHEN DOCKING IS TAKING PLACE AND WATER […]
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PROPERTIES OF BEARING
MATERIAL COMPOSITION SHOULD PROVIDE STRENGTH AND DUCTILITY TO ENDURE THE SERVICE LOAD WITHOUT SHOWING SIGNS OF DEFORMITY, YIELDING AND CRACKING. IT SHOULD WITHSTAND MAXIMUM DYNAMIC LOADING WITHOUT CAUSING OVERHEATING OR […]
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SNCR AND DIFFERENCE BW SCR AND SNCR
IT IS ANOTHER SUCCESSFUL METHOD OF REDUCING NOX EMISSION. IN MANY WAYS IT IS SAME AS THAT OF SCR WITH A DIFFERENCE THAT IT DOESNOT USE ANY CATALYST. THE EFFECT […]
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POWER FACTOR AND ITS SIGNIFICANCE
POWER FACTOR :- IT IS THE PHASE ANGLE BETWEEN THE VOLTAGE AND THE CURRENT. IN A PURELY RESISTIVE CIRCUIT THE VOLTAGE AND CURRENT WAVEFORM ARE IN PHASE WITH ONE ANOTHER […]
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NOX TECHNICAL FILE
NOX TECHNICAL FILE CONSIST OF FOLLOWING DETAILS:- COMPONENTS ,SETTINGS AND OPERATING VALUES OF THE ENGINE WHICH INFLUENCES ITS NOX EMISSION. FULL RANGE OF ALLOWABLE ADJUSTMENTS OR ALTERNATIVE FOR THE COMPONENTS […]
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AFT SEAL LEAK TEST
AFT SEAL LEAK TEST IS DONE DURING DRY DOCK. FOLLOWING PROCEDURE IS CARRIED OUT TO CHECK WHETHER THE SEAL IS LEAKING OR NOT:- DRAIN ALL THE OIL OF THE SYSTEM. […]
