J D Neuhaus: Handling and Lifting Equipment

MarineLink.com
Wednesday, August 28, 2013
Photo: J D Neuhaus

The range of handling and lifting equipment supplied by the J D Neuhaus company is currently in use around the world on Jack-up rigs, Semi-submersibles, Drill ships and FPSO vessels. Their product range incorporates both air and hydraulically powered hoists, with individual lifting capacities ranging from 550lbs to 100 metric tons. These products can also be incorporated into single or double girder overhead travelling cranes, underslung cranes with special low headroom trolley designs, together with purpose designed slewing jib cranes. Hoists can be supplied for specific function duties such as BOP handling (up to 200 metric tons), as well as providing lifting and general load movement solutions including both oblique and horizontal pulling under predetermined conditions.

A BOP handling unit incorporating four J D Neuhaus type EH50 air operated monorail hoists has been supplied to the Maersk offshore rig Guardian, for synchronized BOP lifting and handling during both pre- and post-drilling operations. Two hoists are mounted on each of the twin parallel overhead rails, with each hoist providing 50 metric ton load and 20 meter lift capacities for between deck operations. With the two sets of hoists operating together, a combined lift capacity of 200 metric tons was made available. Synchronized operation of all linear movement and lifting operations of individual, paired or all the four hoists when used in conjunction, was provided with JDN type F multi-function controllers incorporating the main air emergency stop together with a load monitoring device.

The largest purpose built offshore crane system constructed to date by J D Neuhaus was a semi portal, A-frame design supporting twin overhead horizontal track beams each fitted with a single hydraulic EH 40-H hoist unit. These hoists can be operated individually or simultaneously from one controller, and when used in conjunction a total lift of 80 metric tons is possible with a 12 meter lift height being provided over a 7.5 meter span. A JDN Profi 6 TI-H hoist with 6 metric ton lift capacity was also supplied to cover other operational and service requirements. The crane was specified to comply fully with offshore duties including operating at temperatures down to -20ºC. Survival conditions had also to be been maintained in turbulent weather conditions to cover inclines from the horizontal of the rig of 3º with the crane loaded or 27º when unloaded.

All the JDN products combine a rugged build quality with high performance, 100% reliability and the utmost in safety. Their JDN Profi TI hoists are also 100% duty rated and require low maintenance, so eliminating unnecessary downtime. The products are also impervious to dust and damp working conditions and operate within a temperature range of -20ºC to +70ºC. Where supplied for offshore operation, on either rigs or ocean going vessels, then the equipment is provided with a full ‘Offshore Package’ which includes extra corrosion protection to cater for rough, salty weather conditions. The main body component parts of both hoists and cranes are supplied with a four layer marine paint top coat, having a 280 microns total minimum dry thickness in standard traffic yellow RAL 1023 color. Exposed products such as valves and valve heads, together with suspension chains are manufactured from stainless steel, together with bolts and nuts less than 12mm in size. Larger threaded bolt ends and nuts, together with trolley wheel bearings are otherwise protected with grease packed covers, while the chain containers are supplied with a galvanized finish.

All hoists in the JDN Profi TI range incorporate top hook suspension mounting and feature pendant push-button controllers as standard. These hand controllers provide sensitive, infinitely variable or single speed control of the load lift, lower and powered trolley traverse movements where overhead rail mounting is utilized. Trolley mounting options include manual, reel chain and motorized variations. All hoists are also fully ATEX rated for operation in hazardous or potentially explosive atmospheres to a standard classification of Ex II 2 GD IIA T4 / II 3 GD IIB T4.

Standard safety features of the hoists include integrated adjustable overload protection for load ratings of one metric ton and above. A self-adjusting fail-safe braking mechanism is fitted, together with trolley anti-climb drop devices and an emergency stop switch integrated in the main power supply. An emergency lowering device can also be supplied for the Profi TI hoists covering lift capacities from 25-60 metric tons. This involves fitting a separate air tank, with two additional buttons also incorporated into the hand controllers. This air reservoir is automatically maintained at the full working air pressure and acts as a positive emergency braking system when required. The device becomes operable in the event of a severe reduction or total loss of mains air pressure, with a two-handed control operation provided to avoid unintentional lowering. One control button selects between normal hoist operation and emergency lowering, with a second button providing braking to ensure a controlled lowering and safe grounding of the suspended load under the action of its own dead weight.

Additional optional safety features include rack and pinion trolley drives, Delta-P overload protection and load monitoring together with air, hydraulic, radio or electrical remote controllers. Special purpose hoists engineered for extreme conditions can be supplied to cover operations at arctic temperatures down to 45ºC, together with underwater hoists for operation down to 70 meters below water levels.

Certification by Det Norske Veritas can also be provided on request, to comply with safety requirements involving applications for offshore cranes as well as power driven hoists. The standard ATEX classification is according to EC Directive on Hazardous Locations 94/9/EEC with increased spark protection also available if required to a rating EX II 2 GD IIC T4.

jdngroup.com
 

Maritime Reporter February 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Indian Port Workers to Launch Indefinite Strike

Port and dock workers in India are planning to go on an indefinite strike starting March 16th – they are protesting the government’s move to corporatize major ports.

NORDEN Publishes CSR Report

Dampskibsselskabet NORDEN A/S has published its Corporate Social Responsibility (CSR) report 2014. Entitled, “On track”, the CSR report presents an overview of NORDEN’s CSR strategy,

LISCR Appoints New Managing Director for Hong Kong

The Liberian Registry has appointed shipping executive Gerry Buchanan as managing director of its dedicated Hong Kong office, the registry announced today.      As

Marine Equipment

Pronomar, ELA Cooperation Continues

Drying container exhibited again on EWEA in Copenhagen   In October 2014 Pronomar shared news about its cooperation with German based company ELA Container Offshore

Wheelabrator Opens Ontario Location

Surface preparation company Wheelabrator Group (Canada) Ltd. celebrated its grand opening with a ribbon cutting ceremony and luncheon after moving to a new location and office complex in Burlington,

Caterpillar to Deliver Highest Horsepower Tier 4 Solution

Edison Chouest Offshore has selected Caterpillar Marine's Cat Tier 4 Final C280-16 generator sets for two new vessels, Caterpillar announced today. The generators

Deck Machinery

ECO Orders Rolls-Royce Equipment for New AHTS

Rolls-Royce has been awarded a contract worth $30.6m with the American owner Edison Chouest Offshore (ECO). The contract for ship equipment comprises Azimuth main propulsion,

Liebherr Reports Record Year for Offshore Cranes

With 87 units delivered in 2014, Liebherr offshore cranes achieved a new per year delivery record, more than doubling its delivery numbers from 2012. And according to Liebherr,

In Safety, Quality Comes First

Benchmarked, standardized and customizable – Rapp Marine’s array of crane options safely cover the full gamut of workboat needs. In the marine industry, one of

 
 
Maritime Contracts Maritime Security Naval Architecture Pipelines Pod Propulsion Port Authority Salvage Ship Repair Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.3203 sec (3 req/sec)