The LNG Engineering Solution
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STAHLCrane Systems

The LNG engineering solution - expertise in explosion protection Liquefied natural gas (LNG) is purified natural gas containing more than 90% methane and cooled down to -164 to -161 °C. In this state it is odourless, colourless, only slightly toxic and non-corrosive. It is more than 600 times more compact than in its gaseous state and weighs half as much as water. In the form of LNG, natural gas can be safely and cost-effectively transported by sea over long distances in special tankers. This makes it a significant alternative to pipeline-bound natural gas. Experts are of the opinion that...

Cranf S/stems LNG liquefaction plant with LNG hoists from STAHL CraneSystems LNG liquefaction plant LNG receiving terminal with LNG hoists from STAHL CraneSystems LNG receiving terminal Main LNG trade route

The LNG engineering solution - products and services STAHL CraneSystems offers suitable wire rope hoists for all safety levels Rope drums Wire ropes Hoist gear Reeving Floating and spring-loaded suspension

Safety Level 1 As a basic principle, LNG hoists are custom built to the individual specifications and requirements provided by systems builders and EPC contractors. Safety Level 1, the lowest level, employs explosion-protected hoists from STAHL CraneSystems’ SH wire rope hoist programme or AS wire rope hoist programme, specifically designed for routine maintenance work on LNG trains. The modular principle enables various customer requirements to be met. Safety Level 2 In Safety Level 2, two rope drums from the SH wire rope hoist programme, permanently connected by a chain, are driven by one...

Safety Level 3A The LNG hoist in Safety Level 3A is equipped with two separately driven motor-gear units running parallel, two rope drums and two brakes. The brakes are designed so that each one individually is able to brake or hold the load in an emergency. The brakes are synchronously controlled and act as service and holding brakes. The off-standard wire ropes permanently connected to the pump are attached to the rope drum of the LNG hoist by an optional fast action lock. Generally, lifting is performed by one load-bearing rope, the second rope runs parallel as a dead rope without load....

STAHL CraneSystems’ LNG hoists are specifically designed for maintenance work on LNG tanks and are now employed successfully in many plants and terminals throughout the world. Thanks to the high-quality components, robust construction, corrosion-resistant paint and extensive additional equipment they are optimally suited for use in coastal areas with challenging climate conditions. The pumps in the tanks, which pump the liquefied natural gas into a pipe system at temperatures of -164 to —161°C, have to be lifted out of the 70 m high tanks and transported to the exterior up to five times a...

The LNG engineering solution - products and services The facts ■ International specialist for explosion-protected hoist and crane technology ■ One of the widest comprehensive hoist product ranges in the world ■ Our own production with certified quality assurance ■ SH ex and AS 7 ex wire rope hoists for use in Zone 1, Zone 21, Zone 2 and Zone 22 ■ SHW ex winches for use in Zone 1, Zone 21, Zone 2 and Zone 22 ■ ST ex chain hoists for use in Zone 1, Zone 21 and Zone 22 ■ All designs certified to ATEX directives or lECEx regulations For all other operations in LNG trains, STAHL CraneSystems...

1 A slewing crane equipped with an explosion-protected AS 7 ex wire rope hoist, S.W.L.: 5,200 kg 2 Single girder overhead travelling crane with an explosionprotected ST 20 ex chain hoist, S.W.L.: up to 1,600 kg. The travel drives for the underhung crane endcarriages are also explosion-protected. 3 Gantry crane with an explosion-protected SH 6 ex wire rope hoist, S.W.L.: 15,000 kg 4 LNG wire rope hoists on slewing cranes, Safety Level 2, engineer­ng solution comprising two explosion-protected AS 7 ex i wire rope hoists per crane, S.W.L.: 2,000/2,900 kg. 5 Single girder overhead travelling...

The LNG engineering solution – products and services Danger areas A challenging industry is involved in natural gas liquefaction plants. Work with inflammable gas is hazardous. In an explosive atmosphere, both electrical and non-electrical components and elements in the lifting, drive and control technology can trigger an explosion. As a technological leader in explosionprotected crane technology, STAHL CraneSystems supplies hoist equipment suitable for all fields of LNG technology. The range extends from standard explosion-protected wire rope and chain hoists for routine maintenance work...

Cable entry Off-standard rope drum Rope lock Indirect cable entry, extremely high safety level, provided by protection types increased safety ›e‹ and flameproof enclosure ›d‹. Connection from the Ex e connection box to Ex d is by means of post-type bushings. Off-standard rope drum for accommodating a work rope, with a recess for the fast action lock available as an option. The client’s off-standard ropes for pump maintenance are connected by rope locks. With the aid of the fast action lock, the hoist can easily be equipped with a bottom hook block to suit its application. Control pendant...

The LNG engineering solution – products and services In action across the world Experts in all countries immediately recognise hoists and crane components of the STAHL CraneSystems brand. Our systematically engineered and highly developed solutions are in use everywhere. STAHL CraneSystems ranks among world market leaders for explosionprotected crane technology. With the world’s widest product portfolio, we know what is important and always find the ideal solution combined with maximum cost-effectiveness. The off-standard LNG hoists and the explosion-protected hoist and crane technology...

The Netherlands At the GATE terminal (Gas Access To Europe) in Rotterdam, Netherlands, there are three LNG tanks with a total volume of 540,000 m³. Each tank is equipped with LNG hoist technology from STAHL CraneSystems in Safety Level 3A. The hoists, each equipped with two separately driven rope drums and with 2,400 kg S.W.L., are used for maintenance work on the tanks’ liquefied gas pumps. The custom-built hoists are protected from the severe environmental conditions such as wind and rain by a housing with maintenance bridges on both sides. Supplementing the maintenance crane, there is a...