advanced search

Power Site Surveys: Six Keys To Safety

Mar 1, 1998 12:00 PM, Ken Michaels

Common sense, clear thinking, attention to detail, and personnel safety equipment can save life and limb when conducting a power quality analysis.

Can conducting a power site survey be dangerous? If you're not safety conscious, you bet it can. In fact, several electrical accidents have occurred over the past several years. Although most of these injuries were minor, two proved near fatal. One of these accidents happened at an industrial plant where an AC power line monitor connected to a 480VAC electrical panel. While discussing the monitor connections with a plant electrician, the PQ investigator pointed at components in the panel with a metal pen. Unfortunately, he accidentally touched the electrical mains with the pen. The resulting flash and electrical shock caused second-degree burns on both men. The PQ investigator now has limited use of his right hand.

Electrical accidents demonstrate the ongoing need for safe electrical work practices. Most of us as electrical contractors and electrical maintenance personnel attend required safety training. Unfortunately, the bulk of people conducting PQ investigations are not qualified electrical maintenance personnel.

With the exception of electrical utilities' PQ personnel, most involved with power quality investigations do not employ regular safety training. Therefore, some industry experts believe most people never report the majority of safety incidents related to PQ investigations. Remember, conduct a power site survey safely as well as quickly!

It's important to keep some of the following rules in mind when performing any type of electrical system investigation.

* Work with qualified electrician maintenance personnel. If you don't hold a journeyman's or master electrician's license, this is a mandatory requirement in most metropolitan locations. If you do have an electrician's license, it's still a good idea to work in pairs. This will provide an extra set of eyes to review test equipment configurations and test results. It also allows you to secure the test location while the other person performs the measurements. This is also advantageous when emergency medical assistance is necessary. Remember, if you're performing a power site survey with another person, periodically check his or her whereabouts and intentions.

* Maintain training. Most people performing power quality surveys have never been through formal safety training. PQ personnel should attend training courses on subjects such as general power distribution, electrical safety training, and first aid. Make sure you're familiar with OSHA regulations; this will help if there's ever any doubt about safety requirements in particular locations.

* Use personnel safety equipment. Make sure you wear safety gloves and safety glasses with side shields. Also, verify screwdrivers, wrenches, and other tools are rated for use with electrical systems.

* Use test equipment correctly. Some of the aforementioned electrical accidents occurred in the absence of test equipment. In addition, the equipment's configuration did not meet manufacturer's instructions. As such, always read the manual.

* Don't assume anything. Never approach power quality investigations with a cavalier attitude. If you suspect an unsafe condition, verify it from a distance or have a qualified person investigate. Then make sure you correct the problem before you resume the investigation in that area.

* Secure all test equipment. Make sure test equipment is secure if you have to leave it unattended at the site. Relocating test equipment from high traffic areas is a very good idea because it reduces the possibility of damage to the test equipment and someone tripping over it. Besides, it helps keep curious onlookers from sticking their fingers where they don't belong.

Want to use this article? Click here for options!

© 2012 Penton Business Media, Inc.

---

Acceptable Use Policy blog comments powered by Disqus

Browse Back Issues Select an Issue EC&M Magazine | April 2012 March 2012 February 2012 January 2012 December 2011 November 2011 October 2011 September 2011 August 2011 July 2011 June 2011 May 2011 April 2011 March 2011 February 2011 January 2011 December 2010 November 2010 October 2010 September 2010 August 2010 July 2010 June 2010 May 2010 April 2010 March 2010 February 2010 January 2010 December 2009 November 2009 October 2009 September 2009 August 2009 July 2009 June 2009 May 2009 April 2009 March 2009 February 2009 January 1, 2009 December 2008 November 2008 October 1, 2008 September 2008 August 2008 July 2008 June 1, 2008 May 2008 April 2008 March 2008 February 2008 January 2008 December 2007 November 2007 October 2007 September 2007 August 2007 July 2007 June 2007 May 2007 April 2007 March 2007 February 2007 January 2007 December 2006 November 2006 October 2006 September 2006 August 2006 July 2006 June 1, 2006 May 1, 2006 April 2006 March 1, 2006 February 2006 January 2006 December 2005 November 2005 October 2005 September 2005 August 2005 July 2005 June 2005 May 2005 April 2005 March 2005 February 2005 January 2005 December 2004 November 2004 October 2004 September 2004 August 2004 July 2004 June 2004 May 2004 April 2004 March 2004 February 1, 2004 January 1, 2004 December 1, 2003 November 1, 2003 October 1, 2003 September 1, 2003 August 1, 2003 July 1, 2003 June 1, 2003 May 1, 2003 April 1, 2003 March 1, 2003 February 1, 2003 January 1, 2003 December 1, 2002 November 1, 2002 October 1, 2002 September 1, 2002 August 1, 2002 July 1, 2002 June 1, 2002 May 1, 2002 April 1, 2002 March 1, 2002 February 1, 2002 January 1, 2002 December 1, 2001 November 1, 2001 October 1, 2001 September 1, 2001 August 1, 2001 July 1, 2001 June 1, 2001 May 1, 2001 April 1, 2001 March 1, 2001 February 1, 2001 February 1, 1995 January 1, 2001 December 1, 2000 November 1, 2000 October 1, 2000 September 1, 2000 August 1, 2000 July 1, 2000 June 1, 2000 May 1, 2000 April 1, 2000 March 1, 2000 February 1, 2000 January 1, 2000 December 1, 1999 November 1, 1999 October 1, 1999 September 1, 1999 August 1, 1999 July 1, 1999 June 1, 1999 May 1, 1999 April 1, 1999 March 1, 1999 February 1, 1999 January 1, 1999 December 1, 1998 November 1, 1998 October 1, 1998 September 1, 1998 August 1, 1998 July 1, 1998 June 1, 1998 May 1, 1998 April 1, 1998 March 1, 1998 February 1, 1998 January 1, 1998 December 1, 1997 November 1, 1997 December 1, 1996 November 1, 1996 October 1, 1996 September 1, 1996 August 1, 1996 July 1, 1996 June 1, 1996 May 1, 1996 April 1, 1996 March 1, 1996 February 1, 1996 January 1, 1996 December 1, 1995 November 30, 1995 November 1, 1995 October 1, 1995 September 1, 1995 August 1, 1995 July 1, 1995 June 1, 1995 May 1, 1995 April 1, 1995 March 1, 1995

browse e-newsletters