Many of you have been installing infrared windows over the last few years to help mitigate Arc Flash dangers inherent when opening electrical panels to complete Thermographic surveys.  Many more managers of electrical systems have been sitting evaluating and trying to determine exactly how to do this and comply with NFPA70e which sets out guidlines for working more safely with low, medium and high voltage electrical equipment.  In many cases it has not been overly clear exactly how to comply with NFPA 70e and exactly how infrared windows relate.  For those who have invested the time and money to install windows they have found that overall it is quicker, easier and safer to conduct IR Surveys through an infrared window and keep the electrical cabinet sealed and closed.

Tim Rohr, IRISS Inc. has written a white paper that offers clarity to the NFPA.  Email me and I can send you a copy or you can down load it at http://www.iriss.com/PDF/NFPA%20and%20Standards%20Implications%20on%20Thermography.pdf.  I have found that this white paper helps uncomplicate a fairly confusing issue.  NFPA is publishing a revised version of 70E in 2009 which we understand will offer more specifics on the use of IR windows.  Until then please call me at 206 774 8704 or email d.billings@atlas-inspection.com and we can discuss your situation.

Tags: arc flash, electrical cabinet inspection, infrared windows, NFPA 70e, NFPA70e, thermographic survey