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These requirements, along with additional safety-related aspects of crane design, are established by the American Society of Mechanical Engineers in the volume ASME B30.5-2018 Mobile and Locomotive Cranes. Standards for cranes mounted on ships or offshore platforms are somewhat stricter because of the dynamic load on the crane due to vessel motion.
1971 – OSHA passes 29 CFR 1926.550, which is the standard for cranes and derricks used in construction for the next 41 years. [3]1995 – The National Commission for the Certification of Crane Operators (NCCCO) is established by the crane and lifting industry as a nonprofit organization to develop a certification program for crane operators.
An offshore crane shock absorber is a gas spring with hydraulic damping used to reduce dynamic loads during offshore lifting. The lifting capacity of the offshore crane can be increased significantly during lifting in high sea states if a shock absorber is fitted.
A ship classification society or ship classification organisation is a non-governmental organization that establishes and maintains technical standards for the construction and operation of ships and offshore structures. Classification societies certify that the construction of a vessel complies with relevant standards and carry out regular ...
Lodbrok is a floating crane, in the harbor of Ystad 2020. A crane vessel, crane ship, crane barge, or floating crane is a ship with a crane specialized in lifting heavy loads, typically exceeding 1,500 t (1,476 long tons; 1,653 short tons) for modern ships. The largest crane vessels are used for offshore construction. [1]
Knuckle boom cranes have become very common on offshore vessels as less of the deck space is blocked by the crane. Disadvantages of this crane type are the higher power demand and increased maintenance requirement due to the increased number of moving parts.
Active heave compensation (AHC) is a technique used on lifting equipment to reduce the influence of waves upon offshore operations. AHC differs from Passive Heave Compensation by having a control system that actively tries to compensate for any movement at a specific point, using power to gain accuracy.
IACS is a non-commercial, technical collaboration association to establish, review, develop, and promote minimum technical requirements in relation to the design, construction, maintenance and survey of ships and other marine related facilities and to assist international regulatory bodies in the development and interpretation of statutory regulations to help ensure their universal and uniform ...