Focus on ATEX - Safety 27
• If there have been changes that bring in more onerous requirements, then have your certification revised and updated according to the guidance in Clarification Sheet N° ExNB/10/397/CS.
• If there are no more onerous requirements, then modify your Declaration of Conformity to refer to 'Compliance with the following standards' (i.e. remove the reference to harmonised standards). You should continue to reference the older standards that are listed on your certificate, until it is upgraded to the latest EN 60079 standards.
• It may also be wise to include a note under the standards, on your Declaration, stating 'the requirements of these standards have been checked against [EN 60079-0 and EN 60079-11 etc as applicable] and there were no differences affecting the latest technical knowledge for the product identified on this declaration.
Repairs
Repairs must be undertaken by a competent person, therefore end-users must satisfy themselves that their chosen repair company is competent to carry out the work.
When repairing electrical equipment, a workshop not affiliated to the original manufacturer will more than likely struggle to obtain technical detail to assist them in the repair. These types of repairs are limited to those where visual observation is sufficient to determine the specification of replacement parts.
For non-electrical equipment, any component that is ATEX compliant should be replaced with an identical replacement part. Other items such as seals or bearings can be replaced on a like for like
basis. If you are working on equipment certified before ATEX, you can still follow the guidance above, except that any component part marked with an old style certificate number (i.e. without ‘ATEX’ in it - Ex 98E1096U) will not be possible to buy in Europe. Someone could have the right part in store, and therefore it would be considered to be already ‘placed on the market’, if it was purchased before 1st July 2003, so it would be suitable to fit it.
Modifications
The company repairing ATEX equipment must decide whether the modification is ‘substantial’. This is another woolly term that we must grapple with. My recommendation is that you consider a substantial modification is one that affects the explosion safety features of the original product or one that changes the intended use of the product. An example would be a flameproof motor, where modification of the endshield to incorporate a new accessory has led to new flamepaths, or a change to the original flamepath dimensions (note that simply dressing or polishing existing flamepaths to remove pitting would not be considered a substantial modification).
Alternatively it could be that the motor has been rewound to have a different rating. In the cases illustrated, these modifications require the company to have the modifications considered by a Notified Body.
As a final note on repairs and modifications, be sure to keep records of all changes. For modifications, it will be best to keep all design information and a record of assessments so that anyone scrutinising the file later can see a reasoned argument for the conduct of the modification.
New Gas Detection Transmitter for Monitoring Industrial Gases
Oldham (France), an Industrial Scientific company , introduces the OLCT 200 gas detection transmitter. The OLCT 200 fixed transmitter is intended for use in monitoring for hazardous levels of industrial gases.
The OLCT 200 is designed for use with multiple gas detection technologies including electro-chemical, catalytic bead, infrared (IR), and photoionisation detection (PID) sensors. This allows the OLCT 200 to detect many typical gases and provides users the ability to standardise on one transmitter for all of their gas detection
needs. Moreover, the OLCT 200 provides users the ability to monitor two different gases simultaneously and further provides the ability to remote mount sensors away from the transmitter and display. This is ideally suited for applications where gas monitoring is needed in remote or difficult to reach locations.
The OLCT 200 is designed for application flexibility and is compatible with nearly any fixed gas detection installation. It can be configured for 2-wire and 3-wire 4-20mA analog output, Modbus RTU digital output, HART communication and wireless communication. Furthermore, the OLCT 200 offers optional on-board programmable relays and can be configured with either a painted aluminum or stainless steel explosion-proof housing. Additionally, the OLCT 200 can be configured with a cold climate heater to allow for operation in environments where other transmitters cannot effectively perform.
The OLCT 200’s wireless capability provides customers the benefit of a completely wireless gas detection system. The self-contained transmitter provides onboard battery
power and wireless data transmission for most of the OLCT 200’s gas sensors. Furthermore, the OLCT 200’s 900MHz or 2.4GHz wireless communication is directly compatible with all of Oldham’s WX series alarm controllers and with Oldham’s MPSIV mobile monitoring system.
OLCT 200 configurations can be used in explosion-proof and intrinsically safe applications and it has been approved for use in hazardous locations by CSA. Furthermore, the OLCT 200 hardware has been analysed by exida LLC to be suitable for use in SIL 2 applications providing evidence of the OLCT 200’s high reliability.
Reader Reply Card No 80 ATEX Approved Portable Flow Meters
FLEXIM (Germany) introduces its new FLUXUS® The new FLUXUS®
F608 and G608 portable gas and liquid flow meters for usage in hazardous areas. F608 and G608 are based on the widely used, highly reliable and versatile F601 and G601, but have been specifically engineered for
their use within hazardous areas and are covered by ATEX certification (EX II3G). Thus, users aren’t obliged anymore to obtain a Hot Work Permit, making the access to ATEX zones much easier and less time consuming.
The extremely resistant carbon fibre housing, together with the rugged transducer design, ensures a high impact protection as well as a resistance against oil, water and many other liquids. The F608 and G608 share the same efficient battery management as the F/G601, and the system can be fully set-up in less than five minutes due to the intuitive user guidance and the automatic transducer recognition.
Its application range is unrivalled - from pipes as small as 10mm up to 6500mm inner diameter and temperatures ranging from -40°C to 200°C. Being equipped with two flow channels and multiple in- and outputs, the flow meter is designed for direct usage in demanding environments, such as in the Upstream area - where it can be carried as personal luggage to Platform visits - as well as the Downstream sector.
As known from all FLEXIM flow meters, also the F608 and G608 feature a highly precise bi-directional measurement at fast and even very slow flow rates over a wide dynamic measurement range and are not prone to temperature and zero drift.
Reader Reply Card No 81 New Rugged and Reliable Four-Gas Detector
BW Technologies by Honeywell (UK) introduces the newest member of the GasAlert family - the GasAlertQuattro. Rugged and reliable, the GasAlertQuattro four-gas detector combines a comprehensive range of features with simple one-button operation. Simultaneously monitor and
display H2S, CO, O2 and combustibles. With flexible power options, AA batteries or a rechargeable battery pack, the GasAlertQuattro is always ready for your shift.
The large LCD with intuitive icons and backlight simplifies on-site auditing and compliance. Bump test and calibration icons are clearly identifiable, and extralarge digits are easy to read in varying light conditions. The green LED confidence flash provides continuous visual confirmation of detector operation and compliance. The versatile GasAlertQuattro was designed for harsh environments. A durable exterior with reinforced bumpers and integral concussion-proof boot protect the detector. Suited to a wide range of industrial applications including general confined space entry, the GasAlertQuattro offers a simple, automatic calibration procedure and is compatible with BW’s MicroDock II automatic test and calibration system. With the GasAlertQuattro, seeing is believing.
Reader Reply Card No 82 August / September 2011 •
www.petro-online.com
When contacting Companies directly about their products and services, please let them know where you found them!
Thanks, PIN.
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