Belzona Repairs and Protects Water Pumps at Historic Reservoir
Every day, the Queen Mary Reservoir holds 910,000,000 litres of water.
The water is drawn in from an intake channel fed from the Thames, before it is turned into enough fresh water to supply one of the busiest cities of the world. After nearly a century of activity, and following several refurbishments to machinery and equipment throughout the years, the centrifugal pumping system was ready for another major upgrade. (Read More)
Linear Measurement Over Long Sensing Distances – Now With Atex Approval
Sensors UK has expanded its wide range of laser distance sensors with the addition of ATEX (EX II 2G EEx d IIC T6) approval for its flagship model the FLS-C-10.
The FLS-C laser distance sensor measures absolute distances up to 500m, contact free, with an accuracy of ±1mm. The repeat accuracy is ±0.3mm with measurement values being updated at a frequency of up to 200Hz. (Read More)
New Sound Level Meter From Shawcity
New, and now available to buy from Shawcity in the UK are two intrinsically safe sound level meters from 3M, designed to work in challenging oil and gas environments.
Class/Type 1 SE-401-IS and Class/Type 2 SE-402-IS are extensions to the Sound Examiner SE-400 Series of sound level meters. (Read More)
Svantek Offers 24-Hour Noise & Vibration Monitoring At Kings College Hospital Construction Site
Portable environmental sound and vibration stations meet contractual requirement for real time measurement in surgical and external environments.
When 24-hour real time measurement of noise and vibration levels was required by McLaughlin & Harvey, one of the UK’s leading construction companies, for a building project at Kings College Hospital, three SV212 portable environmental (Read More)
Andy Anthony, Managing Director of Monitran, discusses how intrinsically safe sensors and a condition monitoring system are safeguarding plant and equipment.
Monitoring the condition of machinery is a practical means of protecting plant and equipment against unexpected failure, as changes in vibration levels or temperature often provide the earliest indication that maintenance is necessary. However, and as most readers will be aware, when the machinery is in a hazardous environment, (Read More)
With an ever growing focus on health and safety in the work place, employers have statutory obligations to protect the workforce especially in hazardous environments.
Commercial and industrial companies providing products and services in such areas must take measures to ensure that all instrumentation used conforms to the standards set by the mandatory (Read More)
Fitting Addition To Boost Safety
Flexicon has extended its range of hazardous area conduit systems with the launch of an Increased Safety EX e and Dust Ignition Proof EX t fitting for use with liquid tight conduits.
Ian Gibson, technical director for Flexicon, says: “While our EXD barrier glands can also be used for Increased Safety and Dust Ignition Proof, we recognised that not all hazardous area applications need a flameproof barrier gland and for these we can now provide a system (Read More)
E2S publishes an information guide to measuring sound levels in dB
E2S Warning Signals, one of the world’s leading independent manufacturers of high-performance audible and visual signals for commercial, industrial, marine, onshore and offshore hazardous locations, has published an educational guide that seeks to ‘de-mystify’ the dB (decibel), one of the most common units in engineering, yet also one of the most confusing. The guide can be found at www.e2s.com/soundbasics. (Read More)
The main difficulty in comprehending dB measurements is that it is a log-linear scale, which, while it is very useful in representing very large differences in a more user-friendly scale, also compresses the scale. Sound is defined as any pressure variation that can be heard by the human ear. The Threshold of Hearing is defined as 0 dB; the threshold of pain is around 130 dB, a scale that can be readily understood. However, as the power difference between the two levels is 1013 : 1, or, to spell it out in full, 10,000,000,000,000 or ten million million to one, expressing it in these terms suddenly gives a much better idea of the change.
The guide sets sounder output levels in context with some everyday examples. For example, the A151 disaster warning sounder is rated at 150 dB, the same as a jet engine at 1m. It also discusses the effect of frequency on perceived loudness and includes some rules of thumb for system designers who are specifying the output and location of warning sounders to provide the desired sound levels as part of a warning system.
E2S Warning Signals
Tel: + 44 (0)20 8743 8880
Fax: + 44 (0)20 8740 4200
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www.e2s.com
ExVeritas can offer testing and assessment to UL and/or CSA listed standards for North American Hazardous Location approval under our unique agreement with TRaC Global and MET.
Hazloc Testing & Assessment
For North American listing (certification) testing is carried out against the relevant UL and/or CSA listed standard for your product type. This type of testing can only be conducted by an approved test body (NRTL or SCC approval laboratory). ExVeritas is an audited and approved third party test laboratory with MET Lab which entitles ExVeritas to conduct testing in the UK for MET certification under the NRTL and SCC schemes and our agreements with TRaC Global as a Certification Body.
Products requiring Hazardous Area listing in North America are also required to meet general industrial safety standards such as UL61010. This is not self-certification as it is in Europe under CE Marking and can require a significant amount of test and assessment.
NEW IEC/EN60079-14:2014 introduces significant new changes for Ex Installers and Inspectors
EN60079-14:2014 Updates
After a great deal of debate, the new Hazardous Area Installation Standard EN60079-14:2014 has been issued and is published as an IEC and EN Standard. As a BS EN Standard there is a rather unusual section essentially saying that although the Standard is published, the UK takes issue with certain parts/changes!
