Copyright 2014 Associated Research, Inc.

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Presentation transcript:

Copyright 2014 Associated Research, Inc.

Safe Workstation Review for Electrical Safety Testing SYED ABIDI Associated Research Inc. July 22nd, 2015 Copyright 2014 Associated Research, Inc.

Webinar Notes Please use the Q & A utility to ask us any questions concerning the material being presented. Any questions related to running of the meeting (audio and visual, etc) can be addressed to the host (Allison Oba) through the chat line. The Webinar is being recorded and will be available to view usually within a day on our website. Please contact Allison Oba - email allisono@arisafety.com if you would like a copy of the presentation.

Previous Webinar Recap – Electrical Safety Testing 201 Common Electrical Safety Tests Hipot testing Ground Bond/Ground Continuity testing Touch Current testing Testing with Multiplexers Batch testing Label printing Software control and remote operation Data Collection Collecting and managing data Methods of data acquisition

Safe Work Station – Learning Objectives Safety What is safety and why do we test? Shock Hazards Effects of Current on the Human Body Operator 10 Things a Qualified Operator Should Know Building Safeguards Stations with positive protection Station without positive protection Additional Safety Methods Additional means for safe testing Training Resources

Safety Matters Operator Safety The condition of being safe from undergoing or causing hurt, injury or loss Product Safety Device A device or a machine designed to prevent inadvertent or hazardous operation

Severity of Electric Shock Is Influenced by: Physical condition & response. The path of the electrical current through the body. The duration or length of time the person is exposed. The magnitude of the voltage and current flow. The frequency of the supply voltage.

Potential Shock Hazards Contact is made with one point of a circuit and ground. Contact is made with a “hot” metallic part while a person is at ground potential. Contact is made with two points of a circuit.

Effects of Electrical Current on the Body

The outer layer of the skin provides the largest resistance. Human Body Resistance The human body on an average has about 1000 to 1500 ohms resistance to the flow of electrical current. The outer layer of the skin provides the largest resistance. The skin has a breakdown voltage at which it is simply “punctured” leaving only the lower resistance body tissue to impede the flow of current in the body.

Copyright 2014 Associated Research, Inc.

Poll Question Do you use ESD Mats or Smocks at your Electrical Safety Testing Station?

The Qualified Test Operator – 10 Things to Know 1. Determine if exposed conductor is energized 2. Know how to use the equipment. Read the specs!

The Qualified Test Operator – 10 Things to Know 3 Understand approach distances and corresponding voltages AR instruments can output 10 – 20,000 VAC or VDC 4 Understand the relationship between electrical hazards and possible injury Effects of electrical current on the human body 5 Know the safety features of the equipment and how to utilize them. SmartGFI, Interlock and automatic discharge.

The Qualified Test Operator – 10 Things to Know 6. Determine if PPE is necessary, what type and how it’s rated. 7. Know the methods of release for victims who are being shocked. DO NOT TOUCH SOMEONE WHO IS BEING SHOCKED.

The Qualified Test Operator – 10 Things to Know 8 Understand that the tester is a variable voltage power source. Contacting the DUT during the test can result in a dangerous shock hazard. 9 Know the importance of discharging the DUT. There must be a complete path for an instrument to discharge. Be wary all leads are connected for testing. 10 Each step in a work plan must be executed. DO NOT TAKE SHORTCUTS!

Building Safeguards into a Station Enclosure designed to remove shock hazard Cabling and insulation Use PPE (Personal Protective Equipment) Be aware of all nearby hazards

Methods of Safety Testing Testing Station with Positive Protection Copyright 2014 Associated Research, Inc.

Methods of Safety Testing Testing Station with NO Positive Protection Copyright 2014 Associated Research, Inc.

Poll Question What kind of Workstation protection do you utilize?

Test Station with Positive Protection

Test Station without Positive Protection

Additional Methods for Operator Safety Simultaneous Activation Activation of both within 0.5sec Dual Remote Palm Switches

Additional Methods for Operator Safety Illuminates Red when test is active Mounted in plain site for entire work area Signal Lights

Additional Methods for Operator Safety Isolates User From Ground Potential Insulation Mat

Video Demonstration

Training Resources BS EN 50191:2010 OSHA 29 CFR part 1910.332 Subpart S Defines the training requirements for anyone exposed to voltages in excess of 50 volts Employees must be qualified to work on or near exposed energized parts NFPA 70E: Standard for Electrical Safety in the Workplace 2012 Explains reason behind the rule and how to comply Safe work practices, PPE and lockout/tagout procedures BS EN 50191:2010 Erection and Operation of Electrical Test Equipment Defines recommended setups for electrical testing stations

Contact Information If you would like a copy of this presentation please contact Jim Kenesie at: allisono@arisafety.com Check out the Associated Research website: www.arisafety.com Follow us on YouTube, LinkedIn and Twitter: https://www.linkedin.com/company/associated-research-inc.?trk=biz- companies-cyf http://www.youtube.com/user/ARHipot https://twitter.com/ARHypot