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Showing posts from October, 2021

what are the types of oil used in ship ?

Cylinder oil  Lube oil for diesel generator and main engine Air compressor (synthetic oil) Hydraulic oil for steering gear and winches Gear oil  for reduction gear and purifier Intermediate shaft  oil Stern tube oil Life boat oil and Rescue boat oil Governor oil Davit launch oil hydraulic oil Refer . compressor oil A/c . compressor oil Fifi Clutch oil Heavy fuel oil  Marine diesel oil

what are the tanks in ship ?

Bunker tank Fresh  water tank  Sludge tank Oily bilge tank Cargo tank  Double bottom tank  Sewage holding tank Lube oil storage tank  Bilge holding tank  Scavenge drain tank Expansion tank Hydrophore tank  Caseket tank cylinder oil storage tank Stern tube aft and forward seal tank Oily mist tank (chamber) Ballast tank Wing tank copper dam tank steering gear oil store tank Settling and service tank (H.F.O AND M.D.O) Hydraulic  oil  storage tank Waste oil tank

BUNKERING

Chief  engineer received a mail from company.In that mail,how much tonnes are taken at which port and which oil (H.F.O OR D.O) are mentioned.  Chief engineer organized tool box meeting for bunkering. In this meeting duties are discussed with as Ass.4th engineer,which tank to be empty.Make sure bunker tank should be 90% of tank capacity. On the day of bunkering first of all fill the bunker checklist. Bunkering tank and overflow tank to be empty. Then shut all the storage tank valve. Stop the purifier. H.F.O and D.O transfer pump. Bunker barge  are arrived. Bunker barge should be secured with ship. Bunker survey will check all the sounding in E.C.R.It should be note. And heel,list and temperature are noted. Bunker survey and 4th engineer are do the same procedure on barge also.especially temperature and density should be noted. Make the proper communication with bunker barge and emergency sign should be discussed. Bunker connection is made with bunker manifold and  in between the samplin

DUTIES OF 4 TH ENGINEER

 BUNKERING  PURIFIER OVERHAUL  AND MAINTENANCE COMPRESSOR  MAINTENANCE TAKING SOUNDING OF STORAGE TANKS ROUTINE ROUNDS OF ECR  CHECKING OF LSA & FFA MAINTENANCE OF LIFEBOAT IF WE ARE IN TANKER ,MAKE THE PLANT READY AND RUN THE C.O.P.T INVENTORY  AND  PMS MAINTENANCE ASSISTANT WITH CHIEF ENGINEER AND 2^ND ENGINEER kindly drop your comments

Ideal properties of a Marine Refrigerant

Low Boiling Point (for easy system start). High Enthalpy of vaporization ( to gain more heat from the evaporator). Low Condensing Pressure (easy condensing). Less specific volume in vapor state (to accommodate less space in line). High Critical Temp (temperature above which vapor cannot be condensed). Non Corrosive (system loving) Non Solvent (to oil and impurities) Non Miscible (to lub oil (possible to a certain extent)). Non Flammable (for obvious reasons). Non Explosive (Obviously). Non Toxic Easy Leak Detection (by odor or color). Cheap and Easily available. Environment Friendly.

TYPE OF MOTOR AND ITS USES MEO CLASS-4

 1. Turning Gear - Double cage induction motor, 2. Life boat starting motor - Cranking motor solenoid control 3. Emergency generator- cranking motor solenoid control or Hydraulic accumulator starter motor 4. Purifier - 3phase induction motor  5. Windlass & winches - electric- two speed control, pole changing motor & Hydraulic windlass - Hydraulic windlass  6. Air compressor - 3phase induction motor  7. Bilge pump - 3 phase induction motor  8. Fire pump - 3phase induction motor  9. Governor - DC motor ( isochronous governor) 10. Bow thruster - 3 phase induction motor ( with soft starter)