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Thorne & Derrick Blog

Thorne & Derrick are leaders in the development and distribution of Product Innovations that deliver significant improvements to clients plant, people and operational safety in the explosive atmosphere industries.

Your proactive problem solvers experienced in succession planning for the replacement of obsolete, non-conformant and legacy equipment in hazardous areas.

Your first-choice provider of innovative and competitive solutions to ensure ATEX & IECEx Compliance for Hazardous Area Electrical, HVAC & Process Instrumentation Equipment to your UK and international projects.

Control Panels | Plugs | Isolators | Enclosures & Junction Boxes | Lighting | Control Stations | Motor Starters | Heat Trace | Gas Detection | Flame DetectionProcess InstrumentationProcess Heating | Ventilation Fans | Security Access Control 

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Optical Radiation | A Source of Ignition in Hazardous Areas

Published 29 May 2020

Optical Radiation | A Source of Ignition in Hazardous Areas

Optical Radiation is a Source of Ignition in Hazardous Areas. The use of optical radiation in hazardous locations has increased significantly in measurement, control system applications, analysis, lightning technology, signal and power transmission and telecommunications. Optical radiation, especially when the optical signal is unconfined, can be considered as a...

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Process Seal & Hazardous Area Locations

Published 29 May 2020

Process Seal & Hazardous Area Locations

What is a “Process Seal”? “Process seal” is a seal that is used for process-connected equipment intended for connection to an external system containing process fluids in order to prevent the migration of flammable or combustible process fluids into the wiring system in non-hazardous areas or other classified areas....

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Purging & Pressurizing Techniques in Hazardous Locations

Published 29 May 2020

Purging & Pressurizing Techniques in Hazardous Locations

Purging & Pressurizing Techniques in hazardous locations. Purging is a method where a flow of air or inert gas is maintained in an enclosure installed in a classified hazardous area to prevent or reduce the risk of explosive atmosphere occurring. Pressurizing is a method where the pressure of air...

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Class I Division 1 Products & Hazardous Area Locations

Published 29 May 2020

Class I Division 1 Products & Hazardous Area Locations

“Class I, Division 1” Electrical Rotating Machines Electrical machines with “Class I, Division 1” marking are based on “explosion-proof” design. In order to get “C1D1” marking, there are two steps: 1) Ordinary location requirement per standards CSA C22.2 No. 100 for Canada and UL 1004 for the USA. These...

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