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CRANES’ MAINTENANCE: MECHANICAL & HYDRAULIC COMPONENTS

Cranes are extremely useful in the shipping industry. They are used in ports to load ships, onboard ships to move cargo, offshore platforms, and oil rigs. Marine cargo cranes operate in difficult conditions, such as exposure to the corrosive effects of salt water as well as weather elements such as strong winds, because crane locations are constantly subjected to such constants.

Cranes and related auxiliary equipment are critical for ship operations; any problems with them can result in an extended port stay, property damage, or even casualties. Cranes, like other heavy machinery used on the job site, require routine maintenance and inspection to ensure their safety.

A crane is made up primarily of the following sections and equipment:

Base structure of the crane

Fixed Pedestal

Moving Turret

Jib Arm

Hoist with Wire

Hydraulic & Electric Equipment

Safety Devices

The following are some general maintenance requirements that apply to almost all types of cranes:

Steel wire ropes must be lubricated along the entire length of the rope. Every component that comes into contact with the steel wire rope, including the pulley and winch drum, must be lubricated. Furthermore, the rope should be inspected on a regular basis for visible flaws as well as excessive wear and tear.

Brakes — Regular brake pad thickness inspections and service on crane brakes must be performed in accordance with the manufacturer's specifications.

Hydraulic systems — The hydraulic systems of the crane's core machinery should all be inspected and evaluated on a regular basis. This includes all operational components of the overall system, such as the actuator, pump, motor, accumulator, and valves. Every part that will be used should be inspected for general wear and tear, as well as cracking.

Hydraulic fluids and filters should be maintained in accordance with manufacturer recommendations. This could include topping off, draining, and replacing the filter and fluid at regular intervals.

Rotating parts — Sheaves, bearings, and slew rings, to name just a few, are examples of the hardware and parts that enable the crane to rotate and are mainly located in the base structure. It’s crucial that all rotating parts are frequently inspected for damage and wear and that all of the parts are lubricated.

Take nothing for granted when repairing a crane or any piece of equipment that operates with it. Preventative maintenance schedules ought to include every part of a crane, such as stated above.

Our crane technicians and engineers have received training in both mechanical and hydraulic crane repairs. Personnel at Kynosoura Dockyard have many years of experience in the field of control system maintenance, conducting diagnostics and repairs for cranes of any complexity and in a timely manner. We put forth every effort to ensure that cranes operate without any interruption as we recognize the significance and responsibility of the task performed.

At KYNOSOURA DOCKYARD, we provide shipbuilding and repair services in Salamis, Greece for over 50 years. We work to provide you with high quality and safety standards that are created to meet the demands of the shipping industry on the most cost-effective basis through our shipyard and large pool of experienced labor strategically located in the heart of the Mediterranean.

#crane maintenance #ship maintenance #Ship repair in Greece #shipbuilding and repair

Condition-Based Maintenance (CBM): An Important Vessel Strategy

Vessels must be routinely maintained and repaired in order to function properly. Given that new vessels entering service today are expected to have an operating lifespan of several decades, operators can improve risk management, reduce downtime, and spread vessel maintenance and renewal expenses over the cash flow cycle to maximise profits by taking a proactive approach to monitoring the condition of critical machinery and equipment.

The safety of passengers and cargo on board a ship, as well as the security of its equipment, are far too important for shipping companies to overlook. Effective ship maintenance and repair, via Condition Based Maintenance (CBM) strategies - also known as Maker's Overhauling Intervals - and technical operations, ensure the ship's overall operational efficiency.

What is Condition Based Maintenance (CBM)?

CBM is a method of performing equipment maintenance only when it is absolutely necessary and at the most convenient time, while simultaneously monitoring the actual state of any piece of equipment in real-time without interfering with its operation. The primary goals of CBM are to prevent all unplanned maintenance events and to obtain early warning of potential equipment problems so that you can repair them before your organisation suffers any consequential losses. Furthermore, knowing which new parts are needed and when will help you better manage and organise your inventory.

The following are the primary advantages of Condition Based Maintenance:

Optimized to carry out maintenance only when a decline in equipment condition has been detected.

Effective maintenance approach that improves planning and control, preventing failures before they occur.

Decreases the requirement for damage control, which lowers overall maintenance costs and activities.

Ensures equipment is always running at optimal levels.

Increases the machinery’s durability and effectiveness.

Improves availability of vessels, streamlines and simplifies classification processes.

Prevents overwork among a vessel’s crew. By educating employees about equipment existing and potential conditions, such strategies can actually raise staff morale.

How we Implement CBM services for Your Vessel?

VIBRATION MONITORING

Monitoring the vibrations generated during the operation of rotating machinery is a viable technique for diagnosing faults in mechanical engineering applications. The method is based on the fact that each machine component produces unique vibrations at unique characteristic frequencies. When done correctly, vibration spectrum analysis allows for the evaluation of machine health.

OIL ANALYSIS

When issues are detected in equipment from vibration monitoring, the analysis of lubricating oil using chemical and spectroscopic examinations also serves as an additional diagnostic tool.

THERMOGRAPHIC ANALYSIS

Thermal imaging technology employing a digital thermal camera is utilized as an additional diagnostic technique, based on the outcome of vibration analysis and related issues discovered.

ULTRASONIC ANALYSIS

When vibration analysis is not an option, ultrasonic analysis can detect problems at high frequencies. When the machinery is operating normally, a Condition Based Monitoring system significantly streamlines the process by allowing activity to be completed with the least amount of intervention possible.

PERFORMANCE EVALUATION

Performance of a machinery shall be measured at certain intervals, same has to be evaluated and Makers advice to be sought if necessary. Running a machinery within the Maker’s limits can extend the overhauling intervals.

VISUAL INSPECTION Quite often visual inspection of a machinery and its parts is a vital parameter for determining its good operational condition. Although dismantling a machinery and its components for inspection may be complicated and time consuming, it is usually a good method to verify its operational condition.

Our experts and certified analysts at Kynosoura Dockyard select a method by examining and mapping the ship’s vital machinery, then install necessary measuring stations and data. Subsequently, they carefully verify and interpret the data. Along with providing recommendations on how to proceed with repairs and maintenance procedures, customized reports are created which highlight the issues that are then presented to our clients.

To know more about services click here

#Ship repair in Greece #ship maintenance #ship building

Kynosoura Dockyard offers a range of steel renewal and piping work-related services. Our large pool of experienced labor carry out each work with necessary quality and pressure tests

#ship steel renewal #ship piping works

Condition-based maintenance (CBM) is a maintenance technique that evaluates the actual state of an asset to determine what repair is require

To function properly, vessels require routine maintenance and repair. Given that new vessels entering service today are expected to have operating lifespans of several decades or more, operators can improve risk management, reduce downtime, and spread vessel maintenance and renewal expenses over the cash flow cycle to maximise profits by taking a proactive approach to monitoring the condition of key machinery and equipment.

#ship maintenance #shipbuilding and repair

Do you face these common propeller problems?

A ship's propeller is a crucial component whose effectiveness affects the ship's speed, ability to meet deadlines, and ability to keep to schedule. Propeller repairing is crucial to keeping it operating at peak efficiency and extending the longevity of the boat.

The following are a few typical issues you could run across and need to comprehend in order to fix them:

Wear and Tear

Even if they all seem to be the same, your propeller's blades could be evenly dressed out to the point where they need to be changed. A few indicators of uniform wear include pointed or sharpened blades on the front edges. If you observe any major wear, it is advised that you take your propeller repair services. If enough base material is still present, they should be able to rebuild the blades to their original proportions.

2. Corrosion

The seawater that ships frequently set sail in can corrode propellers and cause the metal to look uneven. Some of the alloys separate from the metal as a result. By serving as a transmission solution, saltwater extracts the less noble metal from the alloying. Bronze and aluminium alloy propellers are more prone to corrosion than stainless steel propellers. The primary contrast is that stainless steel blades may still be functional if discovered quickly.

Read more: Small cracks

#propeller repair services.

Machine repair services in Greece.

Any machine needs to be maintained regularly to ensure efficient functioning, avoid certain defects, and extend the machine's useful life. Regular machine repair ensures that parts are still in good operating order, greatly reducing the effects of defective machinery.

When a machine breaks down, there can be significant lost and it decreases the revenues of company. Lack of maintenance causes machines to malfunction, making it impossible for the business to manufacture the product it sells.

Located at at Salamis Island, Kynosoura Dockyard is a leading Greek based company that provides its customers with a wide range of machine repair services and ship construction.

They provide all type of machine repair service that includes overhauling of pump, heat exchangers, repair of air compressors and maintenance of all types and sizes of electrical motors etc.

Read more: Main engine & auxiliary engine

Keeping your ship in proper maintenance

The economy of shipping is something that shipowners think about every day. Without reliable, cost-effective, and environmentally sustainable ship operations, this efficiency could not be achieved. The shipping businesses must reexamine their maintenance view and develop a new service strategy to ensure their viability. shipowners typically invest a sizeable sum of money in the purchase of their vessels, proper upkeep of those vessels is always anticipated to pay off.

A ship's maintenance can be a difficult task. Only workers with in-depth technical precision and determined successfully of marine ecosystems can carry out such activities.The secret to keeping a ship in good condition is efficient planning and effective equipment usage. The engineers perform a variety of procedures both on board and in the port.

A seagoing vessel's components that are not in close touch with the water can also exhibit corrosion. Even more regularly than the hull, a ship's interior should be cleansed and dried completely. Knowing how to clean a vessel is an essential skill for maintaining a vessel, so keeping it clean and presentable is more than simply a question of vanity.

The best way to keep any part in good condition is to always lubricate such moving parts as instructed. Any element, whether it be an engine component or a winch, is susceptible to rapid wear if it is improperly oiled. Any ship's critical components could gradually lose their dependability and develop problems. The best marine services firms take care of all your ship maintenance requirements. From inspection jobs and keeping boats clean to protect surfaces from corrosion while reducing slip hazards applied as advised. With the best expertise in vessel condition assessment and many other ship technical areas, KDC's hand-picked professional marine engineers will help you with ship repair and maintenance system

Propeller repair specialist | Kynosoura Dockyard

The performance of the propeller is greatly influenced by the choice of raw materials used in its manufacture. A ship with bent or fractured propeller blades may sail with very loud vibrations. A broken, twisted, or damaged propeller blade can cause the ship to shake violently.

As a result, the propeller is subjected to unequal pressure distribution stresses, which increase shaft loads and could harm the engine. When faults are discovered on the surface of a propeller owing to damage from an accident or defects in the manufacturing process, they must be repaired by welding.

Accidents involving propellers or collisions with submerged objects can damage propellers, leading to metal loss, corrosion, and even blade distortion. The most serious damage renders a propeller irreparable when a whole blade is lost.

To repair the pitting and remelt the cracks, a welding process may be used. An identical piece is cast and then attached to the propeller blade by welding using the correct welding technique and any necessary post-heating operations for the substantial area of the propeller blade.

By lightly pressing or hammering the blade back into place, the propeller can be repaired by straightening it. A ship repair specialist is needed to complete this difficult repair. On a fixed-pitch propeller, there are times when the entire blade needs to be replaced. The propulsion system's fuel consumption can increase and the propeller efficiency can be reduced by even minor damage.

Propeller repair services offered by KDC are subject to a thorough inspection process. The repair process includes blade straightening, hammering & metal casting.

#Propeller repair services #Ship repair in Greece

High-quality ship engine overhaul and repair services

Overhauling the Primary and Auxiliary Engines

Engine overhauling is a service that KYNOSOURA DOCKYARD offers to vessel owners and managers, giving all essential measurements and data. Within the extent of work completed, bearing inspection, cylinder head and exhaust valve overhauls, and piston removal are all included.

KYNOSOURA DOCKYARD has demonstrated expertise in doing precise crankshaft replacements for a variety of engines (Daihatsu, Man B&W, Yanmar among others).

Exchangers of heat All forms of heat exchangers (tubular and plate) can be overhauled or cleaned by KYNOSOURA DOCKYARD, and they can also be repaired as necessary, including having their tubing redone.

Pumps Overhauling all pumps—Centrifugal, Piston, and Gear—serving a variety of functions on board ships. The Yard is a place where (Water Pumps/Cargo Pumps etc.) can be used.

Read More on Ship Engine Overhaul and Repair Services

Best practices for installing a ballast water treatment system

Shipping firms have a lot of duties every time a ship departs a port because their main objective is to convey cargo around the world. A vital crew task is ensuring that every part of the ship is in perfect working order in order to do this.

The environmental impact of shipping companies' cargo ships must be assessed. Global shipping routes have connected humanity on a scale never before possible, yet they have also endangered numerous ecosystems worldwide. The marine ecology of a new place may be invaded or contaminated by germs from a vessel's ballast water system, which could cause irreparable harm to that region.

What justifies the need for ballast water treatment?

A ballast water treatment system's main objective is to get rid of invasive marine species, which are one of the biggest problems facing the shipping industry. Ships that release bilge water at ports of call incur the danger of contaminating the local water supply with foreign species (such as small fish and bacteria).

Read More on Installing a ballast water treatment system

Important tips while choosing a Shipyard

One of the most important considerations a shipowner can make is which shipyard to use because it can affect expenditures and long-term ship quality during the course of a ship's life. Therefore, when selecting the best shipyard to construct your vessel, you must be careful and methodical.

Stature The volume of recommendations is the yard's reputation. To find a shipyard, begin by consulting others who have had successful big repair work done for them. A list like this encourages trust in the reliability of shipyard information.

Provision The kind and calibre of the facilities that are offered is another factor that you might want to think about. Visit the shipbuilding factory in advance if possible to confirm its capabilities for the task you would like to begin with.

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