Enedis chooses STI for large-scale switchgear safety upgrade project

STI to supply French electricity company with up to 21,000 trapped key interlocking systems

STI has won a contract to supply Enedis with safety interlocking systems for switchgear applications. Enedis manages the electrical distribution network in France, which is one of the largest in Europe. STI was awarded the contract as it has the widest product range on the market and developed products specifically to satisfy the customer’s requirements.

STI has won a contract to supply French electricity company Enedis with safety interlocking systems for switchgear applications.

STI will provide Enedis with between 14,000 and 21,000 Hercule safety systems over the next two years for an upgrade project affecting 25 regions within France and its overseas territories. The contract includes the option of an extra year.

“STI is pleased to have been chosen by Enedis for this project,” said Romain Chaize, STI’s Business Unit Director. “This decision recognises our knowledge and expertise in the field of switchgear safety.”

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STI develops mechanical safety interlocks for harsh environments

NS range suitable for cement, concrete, asphalt and steel industries

STI has developed a range of mechanical interlocks for heavy-duty applications or aggressive environments. The NS range relies on trapped-key technology and is suitable for use in industries such as cement, concrete, asphalt and steel, as well as tyre manufacture and maintenance in the rail industry.

The heavy-duty NS range is suitable for use in industries such as cement, concrete, asphalt and steel, as well as tyre manufacture and maintenance in the rail industry

The NS range’s bolt and latch locks are made from copper-brushed aluminium with stainless steel covers. The corrosion-resistant properties of aluminium enable the range to withstand harsh operating conditions.

There are no intermediary components between the NS range’s key and bolt; the key drives the bolt directly. A broken key will prevent the bolt from moving, while a defective bolt will trap the key in the lock. This important feature ensures that personnel are immediately warned of any fault affecting either the key or locking mechanism, keeping operators safe.

Interlocks whose intermediary components between the key and bolt are faulty could allow staff to turn the key without moving the bolt. If the bolt stays open after the key has been released, an operator could potentially restart a machine while a colleague is still present within a dangerous area.

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ArcelorMittal improves safety and reduces costs with Smart Key Manager

RFID-based system only releases keys to authorised personnel

ArcelorMittal, the world’s leading steel and mining company, has improved safety and reduced costs at its Fos-sur-Mer site in southern France with the Smart Key Manager from SERV Trayvou Interverrouillage (STI).

ArcelorMittal has improved safety and reduced costs with the Smart Key Manager from STI

Before introducing the Smart Key Manager, ArcelorMittal relied on a twin-key system to grant workers access to fork lift trucks and radio controls for overhead cranes. Staff presented their fork lift licence or permit and were given a specially-numbered key. By inserting this key into one side of a two-key lock and turning it, they freed the other key, which then allowed them access to their desired piece of machinery. Over the years, lost, stolen or forgotten keys had to be replaced, while some employees retained their key without holding the necessary licence or authorisation.

To improve this situation, the steel manufacturer installed three RFID-based Smart Key Managers. Staff now tap a personal code into the unit’s keypad to retrieve the key or keys to which management has given them access online. Management can deny access online to any driver who has failed to pass their latest fork lift licence test, which drivers have to sit every five years. As a result, keys are always available in the right place and all key movements, whether live or historical, can be traced online.

The Smart Key Manager’s webserver interface allows the system to be checked and managed in real-time via a web browser from a PC, tablet or smartphone; no software needs to be installed. The system indicates which keys are present in or absent from the cabinet, and who has taken each key and when. Via email, managers can remain informed of key movement, inform others and monitor several levels of administrators.

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New safety interlock range resists shock and vibration

Hercule rated IK08 and complies with IEC 60068-2-6

SERV Trayvou Interverrouillage (STI) has developed a new trapped-key interlock that is highly resistant to external impacts and vibration.

The Hercule is a range of trapped-key interlocks that are highly resistant to external impacts and vibration

Rated IK08 and IP40, the Hercule range is mainly used in the energy sector for applications including switchgear, substations and wind turbines. The product range is compact and offers more than 1.7m key code combinations.

The Hercule’s bolt lock and door lock can withstand a minimum of 60daN, and the whole range complies with IEC 60068-2-6. Hercule is constructed from black anodised aluminium, aeronautical composite (65% glass fibre), brass, and 303 and 304 stainless steel. Two types of cylinder are available: an all-aluminium version or a mixed aluminium stator / composite rotor option.

Schneider Electric, Siemens, ABB and General Electric are among the low- and medium- voltage switchgear manufacturers who rely on the Hercule range.

The bolt lock is typically used to mechanically lock off switches and earthing switches. An enclosure can be added, with the switch’s status being altered by the bolt when the key is turned. The bolt’s position (in or out) determines the key status (trapped or free). Bolt locks can be fixed either from the cylinder side or the opposite side of the cylinder.

A new electromechanical solenoid lock which traps one or several keys is now available.

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New hose coupling interlock safeguards silo deliveries

RGV now lighter, more resilient and easy to use

SERV Trayvou Interverrouillage (STI) has improved its RGV range of hose coupling safety products, which are fitted to silo inlet pipes, to ensure tanker drivers deliver their load to the correct silo.

The RGV hose coupling ensures tanker drivers deliver their load to the correct silo

Companies need to consider the risk of a tanker driver accidently delivering their load to the wrong storage silo. Such processes have to be optimized to satisfy increasingly tough legal requirements, as well as to prevent the risk of accidents caused mainly by human error.

Now lighter, more resilient and easy to use, the latest version of the RGV enables the safe transfer of goods via trapped-key interlocking technology. The RGV range requires operators to receive authorization from the control room before the process can begin. Depending on the type of product being used, this authorization is given either by the hose coupling being unlocked remotely or through the use of an interlocking safety key. The addition of an inductive proximity sensor indicates that a tanker driver is transferring their load.

 

Mechanical RGV

To connect this product to the silo, the operator must obtain the dedicated coded key from the loading manager. Each silo has a corresponding key to avoid load transfer errors.

This solution can be used in conjunction with STI’s RFID key management panel, Smart Key Manager, to ensure optimum safety and traceability.

 

Electromechanical RGV

To connect this product to the silo, the operator has to liaise with the loading manager and wait for authorization from the control room before coupling the hose and starting to unload. Access to the coupling is granted directly from the control room.

 

Electrical contacts can be added to either version of the RGV to enable monitoring from the control room. Supervisors can see which RGVs have been made available to tanker drivers and those that have hose couplings attached.

The RGV system has been designed in accordance with French silo legislation DEVP0750104A.

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New key management system offers real-time control and traceability

Smart Key Manager uses RFID to guarantee high levels of security and productivity

SERV Trayvou Interverrouillage (STI) has launched a new security product that combines key management with real-time traceability. Using RFID technology to guarantee a high level of reliability, the Smart Key Manager can accept up to 16 key modules, controlling a total of 256 keys.

The Smart Key Manager can accept up to 16 key modules, controlling a total of 256 keys.

The product’s webserver interface allows the system to be checked and managed in real-time via a web browser from a PC, tablet or smartphone; no software needs to be installed. The system indicates which keys are present in or absent from the cabinet, who has taken each key and when. Via email, managers can choose to be kept informed of key movement, inform others and monitor several levels of administrators.

Full or partial access to keys can be given remotely via the interface, ensuring that individuals can only access keys relevant to them. The Smart Key Manager offers three levels of security by requiring users to prove their identity with a badge, PIN code or a combination of the two.

Aside from peace of mind, the system increases productivity as keys normally held by members of staff who are suddenly taken ill can be transferred to other workers.

When a user needs access to a key, they first need to prove their identity with their badge or PIN code. The control panel then displays the list of keys that the user is authorised to remove. The user chooses the appropriate key, waits for the key movement to be registered, and removes the key that is now free.

To return the key, the user holds the key fob in front of the control panel and the Smart Key Manager indicates where the key should be inserted and trapped.

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STI launches new safety system for truck loading

The truck shoe guarantees vehicle immobilisation

SERV Trayvou Interverrouillage (STI) has developed a system to ensure the safety of goods loading operations.

The new truck shoe guarantees that the vehicle is completely immobilised for the duration of the operation

The new truck shoe, based on the key transfer principle, guarantees that the vehicle is completely immobilised for the duration of the operation. The system was developed in compliance with INRS brochure ED 6059 and according to CRAM (French regional health insurance fund) recommendations. It can be easily integrated into existing facilities.

Thanks to the key transfer principle, loading is only possible if forklift operators and/or drivers follow a predetermined safety procedure to immobilise the trailer. Forklift operators must follow this process before they can open the dock doors and/or operate the dock leveller to load or unload the cargo.

The truck shoe is easy to use and requires no upkeep or maintenance costs. It is suitable for all vehicle types, from rigids to semi-trailers, and for all wheel diameters.

The system comprises a truck shoe and a 4m long metal plate fixed to the ground. It is also possible to interlock the shoe with the dock doors.

When loading the truck, the shoe is placed against the tyre and the lever is operated. After the shoe is hooked into the ground plate, pressure is applied to the wheel/shoe/ground plate system. Once there is sufficient pressure, the key is released from the shoe and the system is locked.

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New stainless steel access interlock prevents accidental lock-in in dangerous areas

SERV Trayvou Interverrouillage (STI) has launched the NXO1LTC, a new access interlock with personnel key for harsh or corrosive environments. It consists of a lock with two key slots that work on a free key / trapped key basis.

The NXO1LTC consists of a lock with two key slots that work on a free key / trapped key basis

To gain access to a dangerous area, the operator has to first insert an isolation key into the lock portion. Turning this key releases the personnel key, and allows the bolt to be removed and the door opened.

The operator retains the personnel key while inside the dangerous area. This prevents the door being shut behind them and also stops the machine from being restarted by another person.

The NXO1LTC’s completely stainless steel construction makes it suitable for use in harsh or corrosive environments as the paper, food, robotic, chemical and petrochemical industries.

As an entirely mechanical proposition, the NXO1LTC removes the need for cabling, reducing related maintenance costs and eliminating the risk of a cable malfunction.

STI’s safety products are heavy-duty and comply with all European machinery directives currently in force. They are popular with customers due to their strength and simple method of operation.

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SERV develops new stainless steel emergency exit device

DEU prevents operators becoming trapped in a dangerous area

SERV Trayvou Interverrouillage (STI) has developed the DEU (dispositif d’évacuation d’urgence), a new system to prevent an operator becoming trapped in a dangerous area.

The DEU prevents an operator becoming trapped in a dangerous area

Made entirely from stainless steel, the DEU is suitable for use in harsh or dusty areas. The product satisfies all of the standards currently in force relating to emergency exit systems.

The DEU is mounted in conjunction with a latched access lock. Any operator finding themselves trapped inside a dangerous area simply pushes the DEU’s button and, with this simple gesture, frees the latch from the DEU. The operator can then leave the area.

If fitted with safety contacts, the device can also enable an emergency stop circuit to be opened and therefore the machine to be stopped.

The system is easy to install, flexible and can be used with all kinds of latched access locks.

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Key exchange box guarantees safe machine maintenance

100% stainless steel NX1000 protects several operators acting simultaneously

SERV Trayvou Interverrouillage (STI) has introduced a key exchange box, the NX1000.

The NX1000 allows a set of keys to be made available through a system of exchange

The NX1000 allows a set of keys to be made available through a system of exchange. An initial key is inserted into the exchange box to release three keys that give access to dangerous areas or machines whose safety conditions have already been satisfied. For example, a machine that has been turned off, an electric circuit that has been opened and locked off or a hydraulic system that has been prevented from operating will all allow the three access keys to be released.

As long as these three keys are not returned to the exchange box, the initial key remains trapped. It is therefore impossible for the machine or installation to be restarted while maintenance work is in progress.

The NX1000, like most of the systems recommended by STI, forces operators to ensure that one or more conditions have been fulfilled before they are able to release the access keys. In addition, the NX1000 is made entirely from stainless steel, making it suitable for use in corrosive or dusty environments.

It should be noted that the number of initial and / or access keys can be varied according to the specific requirements of a particular installation.

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