Explosion Protection

ST ex explosion-proof chain hoists – safety from the world market leader

When it comes to the safety of people and machines in potentially explosive gas and dust environments, STAHL CraneSystems is pioneering, dynamic and uncompromising. STAHL CraneSystems is the world market leader and acknowledged specialist for explosion-proof crane technology.

With our many decades of know-how and experience, our fundamental research and development, and approvals from the German Federal Physico-Technical Institute (PTB) and other test institutes in many countries, we hold a prominent position in this field.

All components of our chain hoists without exception, from motor and brake to control equipment and control pendant, come from our production. This ensures maximum and high-quality explosion protection. The new, strict ATEX regulations on mechanical explosion protection are naturally met. STAHL CraneSystems was the first builder of overhead material handling equipment to implement the ATEX directive in its entire product range.

Explosion-protected wire rope hoists – no compromises on safety

Explosion-protected hoists are needed on oil rigs, in gas liquefaction plants (LNG), in mines or the chemical industry: wherever explosive gases or specks of dust predominate.

STAHL CraneSystems is the world market leader for explosion-protected hoists. Experience, expertise and the insights gained from decades of fundamental research and development converge in our company. STAHL CraneSystems occupies an exceptional position in this field enjoying approvals from the Federal Physico-Technical Institute (PTB) and many international inspection authorities.

All the wire rope hoist components are of our production: from motor and brake to control and switchgear. In this way, we can guarantee optimum explosion protection.

The rigorous ATEX regulations on mechanical explosion protection are of course met. STAHL CraneSystems was the first builder of overhead material handling technology to implement the ATEX directive throughout the product programme.

LNG hoists for LNG trains and terminals

Liquefied natural gas (LNG) is purified natural gas cooled down to –161 °C. In this state, it is odorless, colorless, scarcely toxic and non-corrosive. It is 600 times more compact than in its gaseous state and half the weight of water. In the form of LNG, natural gas can be transported by sea in special tankers over great distances – safely and cost-effectively.

Natural gas is highly susceptible and easily inflammable. In LNG trains, the large-scale industrial plants for liquefying and regasifying natural gas, strict safety regulations must, therefore, be observed and actions to prevent explosions be taken. This applies to crane technology too.

LNG hoists from STAHL CraneSystems were developed specifically for the maintenance of LNG plants. Thanks to the high-quality components and robust design, they are optimally adapted for the rugged climate in coastal areas.

LNG wire rope hoists are of completely redundant design: two hoists, two brakes, two gears, and two ropes ensure that in the – unlikely – event of a breaking rope or a malfunction, the hoisting procedure can continue without interruption, and without damaging the valuable pump or parts of the LNG plant. Off-standard ropes are used for lifting the liquefied gas pump. They are connected to the pump and remain in the tank permanently. These ropes are attached to the rope drum by means of rope clamps. If one of the ropes should break, the second hoist continues the hoisting procedure.