Marine Engineering

CHECKS BEFORE STARTING INCINERATOR MDO TANK LEVEL  MDO TANK OUTLET VALVE OPEN  WASTE OIL TANK LEVEL  WASTE OIL TANK OUTLET VALVE OPEN  WASTE OIL TEMPERATURE 70 – 80 DEG C  MDO TO PILOT BURNER VALVE OPEN  CONTROL AIR VALVE OPEN  STARTING PROCEDURE OPEN MDO TO MAIN BURNER  SHUT RE-CIRCULATION VALVE TO WASTE OIL TANK TO PREVENT D.O GOING TO WASTE OIL TANK  SWITCH ON THE START BUTTON, FAN WILL START FOR PRE PURGING.  CONTINUE PRE PURGING FOR 1-2 MIN  SWITCH ON THE MAIN BURNER TO CIRCULATE MDO THROUGH BURNER  SWITCH ON THE IGNITOR TO FIRE PILOT BURNER  SWITCH OFF THE PILOT BURNER WHEN FLAME IS STABLE  OPEN WASTE OIL TO MAIN BURNER AND SHUT MDO VALVE  SWITCH OVER TO W.O WHEN TEMPERATURE IS ABOVE 80 DEG C AND FURNACE TEMPERATURE IS ABOVE 650 DEG C.  STOPPING PROCEDURE OPEN MDO TO MAIN BURNER AND FIRE FOR 2-3 MIN TO COOL THE BURNER.  SHUT WASTE OIL TO MAIN BURNER  SHUT RE-CIRCULATION VALVE TO WASTE OIL TANK  SWITCH OFF MAIN BURNER  SWITCH ON FAN INDE

Ship Cabin unit Model description : "C": Ships "UK": top type "UQ": ball type "E": electric heating Composition : mainly consists of the shell, connecting pipe, regulating mechanism, diffuser, electric heating and so on. Product function : Air distributor is mainly used to send the air from air conditioner into the cabin to make it mixed with the indoor air evenly. Product advantage : The utility model has the advantages of small volume, low noise, convenient and simple operation, compact structure, space saving, stable performance, low energy consumption, shock resistance and swing, convenient maintenance etc. Appearance size can be customized according to customer requirements. Air volume : 0~350m3/h Electric heating power (electric heating air distributor) : 400W-2000W Widely used in various types of passenger ships, cargo ships, ships and offshore oil platforms and other places. Marine Gooseneck Ventilator Product function : The

Marine valve have DIN,JIS,CB,GB Standards. Marine Butterfly valve Butterfly valve is a simple structure control valve can be used for low pressure pipeline medium switch control butterfly valve is closed parts for the disc, around the valve axis of rotation to achieve valve opening and closing Working principle Butterfly board driven by the stem, if turn 90 degrees, can complete a opening and closing. Change the deflection angle of butterfly plate, can control the flow of medium. Working condition and medium: butterfly valve used in furnace, gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, metallurgical and chemical industry and environment-friendly power generation, building to drainage engineering system transport all kinds of corrosive and non corrosive fluid pipe for regulating and truncated medium flow. Functional use: Valve opening and closing parts is a round disc, in the valve body around its own axis rotation, so as to achieve the purpose o

Mooring rope according to the strength, elasticity, durability and operation to choose the most suitable materials. That large ships use wire ropes, and in the small and medium-sized ships to give priority to the use of synthetic fiber rope. All the mooring line as far as possible to choose the same size and material .Multiple strands mooring rope used to tie ships. Requires the tensile strength, impact resistance, abrasion resistance, flexibility, light. In the past commonly used steel wire rope, hemp or cotton rope; after the emergence of synthetic fiber, has been mostly used for nylon, polypropylene, polyvinyl alcohol, polyester and manufacture. Synthetic fiber rope in light specific gravity, high strength, impact resistance and good abrasion resistance outside, corrosion resistance, mildew resistance, resistance to insects and other advantages. Chemical fiber cable according to the processing structure is divided into With 3 strands rope, 6 strands rope, 8 strands rope, 12 stra

WHY LOAD TEST ? To check performance and condition of the mooring winches. Gear backlash measurement The gap (backlash) between the two gear tooth in contact (gear wheel and pinion) is measured in this test. For this purpose a solder wire is placed on a tooth on the pinion wheel (connected to the hydraulic motor) and the motor is turned. After one round, when the tooth of the pinion contacts that of the gear wheel the solder is flattened to a thickness corresponding to the gap between the two tooth. This thickness is measured using a vernier caliper. It is compared to the design specification. Load checking The winch is rated for a particular load according to design. This load is simulated using a weights attached to a wire rope and lifted vertically. The arrangement is shown in the figure. While considering the total load on the winch, we must also take the efficiency of the sheave, η. Considering there are three sheaves, load on the winch (F) and the total weight (

Rubber Fender is an elastic buffer device of rubber use of ships dock edge. Mainly used to slow the ship and dock impact, or between ships in dock impact, or mooring process impact, to prevent or eliminate damage to a ship or dock Usually the rubber fender according to the structure can be divided into two categories: solid rubber fender and floating type rubber fender. Solid rubber fender dock ship application long history and wide range of anti-collision equipment. Can be divided according to the rubber fender force to shear, rotation and compression type and so on; according to the fender structure, solid rubber fender can be classified as type D type, Cone type, drum type, fan-shaped, rectangular type, cylinder fender and so on. Solid rubber fender with high energy absorption and reaction force, and has low cost, long service life, easy installation and maintenance advantages, dock, dock installed more protective device. Floating type rubber fender is newer protecting

Definition Machine to twist the rope.winch to maintain and twist the rope in tension, and can store the rope also called mooring winch. Winch or mooring winch, mainly used to twist the rope. Bow mooring machinery is performed by windlass drum, some large ship at the bow designed special mooring winch; middle ship rope by cargo winch drum twist, some large ships also dedicated mooring winch; on the stern deck is another mooring winch or mooring capstan. Winch has vertical or horizontal. Vertical winch called capstan. According to the power different divided steam winch, electric winch and hydraulic winch. Classification of winch According to the power source, electric winch , hydraulic winch, and steam winch. According to the axial direction of drum, can be divided into horizontal and vertical cable winch. Horizontal marine winch General horizontal winch drum is driven by the motor after drive operation, the deck occupies a larger area. Vertical marine winch Vertical winch, also k

This test is carried out in front of the  Classification Surveyor.   As per classification rules the Windlass  must be able to raise the anchor from  82.5 mtr depth to 27.5 mtr depth ( two cable lengths ) at a mean speed  of 9 mtr/minute. If the depth of water  is inadequate, a simulated condition  is considered.

Windlass is ship machinery to retractable anchor and chain on board. Using steam engine, electric motor and hydraulic motor as power. Usually installed on the first deck of ship. The trend of its development is to achieve operation, anchoring, mooring and automatic mooring for a unit. According to the driving form can be divided into: manual, electric, hydraulic. Windlass mainly by base, bracket, chain wheel, brakes, sprocket, gear box, control system (manual windlasses except ) and other components, electric windlass motor and hydraulic windlass with hydraulic pump station. The main specifications of windlass include diameter of anchor chain, anchor nominal speed, rated load, support load, speed, power system voltage etc. Windlass in ship installation to ensure the chain and sprocket wrap angle is 117 - 120 degrees. Anchor windlass requirements The windlass is machinery for anchoring and anchor drop, also used as mooring. There are some requirements for windlass: 1) the anchor shou

Hydrazine is a colourless liquid which is highly soluble in water.  It is a powerful reducing agent and will reduce oxygen to form nitrogen  and water, with no resulting dissolved solids. At high temperatures and  pressures, the reaction between hydrazine and dissolved oxygen also  forms very small quantities of ammonia. This ammonia carries over into  the steam and helps to reduce the acidity of the resulting condensate as  it is returned to the feedwater system. Hydrazine also reacts with soft  haematite layers on the boiler tubes, forming a hard magnetite layer  which then protects the tubes from further corrosion. The alkalinity of water is a measurement of its buffering capacity.  Alkalinity of natural waters is typically a combination of bicarbonate,  carbonate, and hydroxide ions. Sewage and wastewaters usually exhibit  higher alkalinities due to the presence of silicates and phosphates.  Alkalinity inhibits corrosion in boiler and cooling waters. Hydrate  alkalinity is

A centrifugal pump converts rotational energy, from a motor, to energy in a moving fluid. A portion of the energy goes into kinetic energy of the fluid. Fluid enters axially through eye of the casing, is caught up in the impeller blades, and is whirled tangentially and radially outward until it leaves through all circumferential parts of the impeller into the diffuser part of the casing. The fluid gains both velocity and pressure while passing through the impeller. The doughnut-shaped diffuser or scroll section of the casing decelerates the flow and further increase the pressure. Fluid under pressure now leaves the impeller producing a drop in pressure behind it at the eye of the impeller. This causes fluid from the suction pipe to flow into pump due to atmospheric pressure and subsequently that fluid also gets discharged. This way fluid in the pump acts like a piston moving outwards and causing drop in the pressure behind.  THAT IS WHY A CENTRIFUGAL PUMP CAN BE STARTED WITH

ISO Standard 8217 British Standard BSMA 100 / CIMAC specifications. Main / Aux. Engine IFO 380 is = ISO Standard RMH 35 Main / Aux. Engine IFO 180 is = ISO Standard RMH 25 Aux. Engine : MDO is equivalent to ISO Standard DMB ISO  ISO Standard 8217 The latest standard is ISO 8217 issued in 2017. The ISO standard describe four qualities of distillate fuels and 10 qualities of residual fuels. Marine distillate fuels Parameter Unit Limit DMX DMA DMB DMC Density at 15 °C kg/m 3 Max - 890.0 900.0 920.0 Viscosity at 40 °C mm²/s Max 5.5 6.0 11.0 14.0 mm²/s Min 1.4 1.5 - - Water % V/V Max - - 0.3 0.3 Sulfur % (m/m) Max 1.0 1.5 2.0 2.0 Aluminium + Silicon mg/kg Max - - - 25 Flash point °C Min 43 60 60 60 Pour point, Summer °C Max - 0 6 6 Pour point, Winter °C Max - -6 0 0 Cloud point °C Max -16 - - - Calculated Cetane Index Min 45 40 35 - Marine residual fuels Parameter Unit Limit RMA 30 RMB 30 RMD 80 RME 180 RMF 180 RMG 380 RMH 380 RMK 380 RMH 700 RMK