Thanks for all the replies.
The solution was for the plant to pay the utility to pay to have pole top cutouts installed that where operable from the base of the pole. Such switches have a place to accommodate a padlock.
I agree this would be the best long term solution and I plan on persuing it. The other utility yards we have all have this arrangement and we can secure the utility switches with padlocks. What we have been doing is attaching our "Do Not Operate" tags to the utility's tags and having the utility hang our tags. Taping a "Do Not Operate Tag" on the utility's tag does not strike me as very professional which is why I am trying to procure some we can personalize.
You have no business doing any work on the utility side of the service point.
We don't do any work on the utility side and we don't do any of the switching. We perform PM's on all our switchgear on a 2 year frequency. The only way to perform maintenance on our main breaker is to have the utility isolate power. All switching is done by the utility and then locks or tags are applied by us under the supervision of the utility.
Your LOTO policy will have to be modified to address this procedure per OSHA 1910.269.
We usually prohibit the use of tags in lieu of locks. In this case we currently have no choice. What we have been doing is building a "virtual lockbox". A tag is hung on the 3 individual knife switches by the utility. Three matching release tags are then placed in a lockbox that all workers then place a lockout padlock on. The utility will not remove our tag from the switches and/or close the switches unless I personally tell them they can. I will not tell the utility they can until everyones lock is removed from the box and I have the corresponding release tags in my hand.
Again thanks for the replies. Anyone have a source for the plastic tags with hooks?