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URD Radial Feed Transformer Changeout

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Presentation on theme: "URD Radial Feed Transformer Changeout"— Presentation transcript:

1 URD Radial Feed Transformer Changeout
© 2018 Iowa Association of Electric Cooperatives DISCLAIMER: This job hazard analysis (JHA) has been made available for informational and educational purposes only. The IAEC does not make any representation or warranty with respect to the accuracy, applicability, fitness, or completeness of the JHA. The IAEC hereby disclaims any and all liability to any party for any direct, indirect, implied, punitive, special, incidental or other consequential damages arising directly or indirectly from any use of this JHA which is provided as is.

2 OSHA Required Tailgate Discussion Topics
Hazards Associate with the job Work Procedures Involved Special Precautions Energy Source Controls PPE Required The five topics required by OSHA to discuss in the tailgate. First letter from each topic = How Well Should Everyone Plan © 2018 Iowa Association of Electric Cooperatives

3 Work Procedures Involved Hazards associated with the job
Special Precautions Energy Source Controls Personal Protective Equipment Be sure to record your emergency location and post in a location everyone on the crew knows. Have your PPE and First Aid kit available Be sure your AED is accessible. A safe job begins with a thorough inspection of… Tools Be certain all of your tools are in good shape. Equipment Make sure your trucks are all in working order take time to preflight your equipment and insure there are no surprise. Line/Structure Look over the line and structure. Are there any potential hazards? (Broken insulators, damaged wire, clearances over roads or from trees?) Be aware of your work area, be sure to cover anything you can reach touch or fall into. And anything that can reach touch or fall into you! Discuss all PPE needed for the job and wear your PPE. Be sure to inspect your equipment prior to use. Identify all voltages you are exposed to. Be sure to have all of your Arc-Flash protective gear on. Identify a dedicated observer Working in traffic exposes you to hazards that are difficult to control. Give the vehicles plenty of time to see and avoid you! Follow the manual of traffic control for your area. Slips trips and falls are some of the most common injuries, look for hazards that could cause this. Be sure to inspect and wear your fall arrest harness. Here are the five topics again with signs and bubbles to jump start tailgate discussion!! Click on the icon to bring up a text box. Click on the icon again to make the text box go away Gets the crew involved. Gives the feeling of knowing it is ok to ask questions, give suggestions, see something, say something! The next slides will get directly into the task at hand. Visual, written and audio will all be used here! There are suggestions in the notes as to what to discuss. This will get the Team involved, creating communication channels to open! © 2018 Iowa Association of Electric Cooperatives

4 Begin by de-energizing the cable feeding the transformer
Begin by de-energizing the cable feeding the transformer. Do a walk around of the transformer and look for hazards. Hazards would include… a damaged tank, oil leaks, animals, snakes, insects, etc. Open the transformer wearing rubber gloves and any other PPE required by your employer. © 2018 Iowa Association of Electric Cooperatives

5 With a hot stick install a temporary portable feed through.
© 2018 Iowa Association of Electric Cooperatives

6 © 2018 Iowa Association of Electric Cooperatives

7 © 2018 Iowa Association of Electric Cooperatives

8 Remove the feed elbow and place it on the temporary feed through.
© 2018 Iowa Association of Electric Cooperatives

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13 Move the insulating cap from the feed through to the H1A bushing.
© 2018 Iowa Association of Electric Cooperatives

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16 With an approved voltage detection device, test to insure the cable is de-energized.
© 2018 Iowa Association of Electric Cooperatives

17 Attach the ground connector of the eldow ground to the concentric neutral/ground conductor.
© 2018 Iowa Association of Electric Cooperatives

18 © 2018 Iowa Association of Electric Cooperatives

19 With a stick, connect the elbow ground to the open bushing of the portable feed through.
© 2018 Iowa Association of Electric Cooperatives

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23 You may now remove the case grounds and secondaries and lift the transformer from the pad.
© 2018 Iowa Association of Electric Cooperatives

24 Place the replacement transformer on the pad and reconnect the case grounds and secondaries.
© 2018 Iowa Association of Electric Cooperatives

25 Remove the elbow ground.
© 2018 Iowa Association of Electric Cooperatives

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29 With a stick, remove the ground clamp for the elbow ground.
© 2018 Iowa Association of Electric Cooperatives

30 © 2018 Iowa Association of Electric Cooperatives

31 © 2018 Iowa Association of Electric Cooperatives

32 Remove the insulated cap from the H1A bushing and place it back on the open bushing of the portable feed through. © 2018 Iowa Association of Electric Cooperatives

33 © 2018 Iowa Association of Electric Cooperatives

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36 Move the line elbow back from the feed through to the H1A bushing.
© 2018 Iowa Association of Electric Cooperatives

37 © 2018 Iowa Association of Electric Cooperatives

38 © 2018 Iowa Association of Electric Cooperatives

39 Remove the portable feed through.
© 2018 Iowa Association of Electric Cooperatives

40 © 2018 Iowa Association of Electric Cooperatives

41 © 2018 Iowa Association of Electric Cooperatives

42 You can now re-energize the line feeding the transformer, take your voltage tests, and return the transformer to normal operation. © 2018 Iowa Association of Electric Cooperatives


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