Search:

Type: Posts; User: cdevine

Page 1 of 2 1 2

Search: Search took 0.41 seconds.

  1. Some might say that the reasoning in the...

    Some might say that the reasoning in the interpretation is flawed eg....

    "One effective method of compliance would be a deliberate attempt by an authorized employee to start up the equipment,...
  2. Thank you umichEE. I agree, OSHA has taken a...

    Thank you umichEE. I agree, OSHA has taken a firm position on this topic. As you may have read in earlier posts in this thread OSHA's logic may not be entirely bullet proof. Some designers may...
  3. Agree 100%. This device is suitable for...

    Agree 100%. This device is suitable for verification prior to mechanical work only. Incidentally, which happens to be the most frequent reason why isolations are performed.
  4. First a disclosure. I am involved in the...

    First a disclosure. I am involved in the development of the solution and as this is a no advertising forum (as it should be) I will provide some hints as to the solution rather than website links to...
  5. Yes GoldDigger I think that probably is what the...

    Yes GoldDigger I think that probably is what the legislation is trying to convey. Perhaps because historically, a one size that fits all has been very difficult to achieve and even they know it.
    ...
  6. Replies
    28$$
    Views
    1,747

    Which is similar to my experience but it seems to...

    Which is similar to my experience but it seems to me that more companies are realising the short comings of try start, visible break and low tech, lamp indicator methods. The future of isolation for...
  7. Replies
    28$$
    Views
    1,747

    Thanks. It certainly does address the arc flash...

    Thanks. It certainly does address the arc flash issue as you don't need to open the panel door.

    However, for mechanical work, could you trust the test result as much as a live-dead-live test...
  8. Replies
    28$$
    Views
    1,747

    Very interesting and most educational. Just so I...

    Very interesting and most educational. Just so I understand the state of the art of verification for mechanical work...

    The mechanical work verifier needs to determine two things:


    has the...
  9. Replies
    28$$
    Views
    1,747

    Are you thinking that a live-dead-live check or...

    Are you thinking that a live-dead-live check or similar could not be used on all electrical equipment and under any process condition? Please don't burst my bubble on this one!

    Hang on, maybe you...
  10. Replies
    28$$
    Views
    1,747

    Thanks don_resqcapt19. One issue I have faced...

    Thanks don_resqcapt19.

    One issue I have faced when talking to safety people is that isolation verification for mechanical works should be:


    simple
    the same on any electrical equipment
    the...
  11. Replies
    28$$
    Views
    1,747

    Understood. Do you ever get a situation...

    Understood.

    Do you ever get a situation where its just inconvenient to try start eg material on a conveyor belt, very large motors with limited starts per hour etc?

    I assume execution of the...
  12. Replies
    28$$
    Views
    1,747

    Thanks don_resqcapt19. Certainly a more reliable...

    Thanks don_resqcapt19. Certainly a more reliable solution. How do you accommodate the possibility of jammed equipment in your procedure?
  13. Replies
    28$$
    Views
    1,747

    Thanks pfalcon. To be fair, I think fraymond was...

    Thanks pfalcon. To be fair, I think fraymond was referring to isolation for mechanical maintenance and therefor contact with parts that are sometimes energised, is not likely/impossible. On this...
  14. Replies
    28$$
    Views
    1,747

    Arc flash is not really my area but given the...

    Arc flash is not really my area but given the number of isolations being performed are you comfortable that a try start is providing 100% accuracy, all of the time? For example could control circuit...
  15. I'm curious. What is being used other than Try...

    I'm curious. What is being used other than Try Start and Visible Break Isolators for the purpose of verifying isolations for mechanical maintenance?
  16. An extract from Western Mining Corporation's...

    An extract from Western Mining Corporation's notes on visible break isolators:

    Sighting all the physical breaks between the fixed and moving contacts of three phase isolating devices is not...
  17. Could it be that "A qualified person shall...

    Could it be that "A qualified person shall operate the equipment operating controls or otherwise verify that the equipment cannot be restarted." provides the flexibility to use other (potentially...
  18. My thoughts WarAxe... Largely agree. If...

    My thoughts WarAxe...



    Largely agree. If you can't use the same technique under all circumstances then what good is it? There are two situations where it is partially useful. Firstly, In the...
  19. Replies
    3$$
    Views
    611

    Couldn't agree more. Locking off is one thing,...

    Couldn't agree more. Locking off is one thing, verifying the isolation, releasing energy etc are other significant aspects of LOTO that you would learn during training also.
  20. Firstly, I assume you mean electrical work on the...

    Firstly, I assume you mean electrical work on the electrical pump (live-dead-live check required) rather than non-electrical work on the electrical pump (effective isolation test required. Not...
  21. Replies
    5$$
    Views
    1,034

    Some other things to think about... Q1. For...

    Some other things to think about...

    Q1. For electrical work - no for regulatory and welded phase contact reasons. For non electrical work - perhaps. Possible issues include jammed pump shaft...
  22. Replies
    15$$
    Views
    1,921

    Sounds like this is territory familiar to you as...

    Sounds like this is territory familiar to you as well GoldDigger!

    Of course doing voltage tests at CBs inside MCCs introduces its own dangers like you have suggested. So too does test points on...
  23. Replies
    15$$
    Views
    1,921

    Could not have said it better myself GoldDigger. ...

    Could not have said it better myself GoldDigger.

    If the LOTO disconnect is faulty, and there is an intermediate disconnect that is open at the time of the voltage test at the load, the voltage...
  24. Replies
    15$$
    Views
    1,921

    No arguments from me either. Just making a...

    No arguments from me either. Just making a suggestion as to the reason for permanent voltage indicators and how confusion may arise in the mind of a sparky given their wide spread use. As you have...
  25. Replies
    15$$
    Views
    1,921

    I suspect RichB, the confusion relates to...

    I suspect RichB, the confusion relates to verification for the two different types of work 1. electrical work and 2. non-electrical work.

    In Australia, and I am pretty sure the US also, in the...
Results 1 to 25 of 26
Page 1 of 2 1 2