One of the first casualties of corporate cost-cutting measures was the elimination of a lighting maintenance program.
Towards the end of the avarege lamp life, the whole system should be scheduled for shutdown, and all tubes replaced and lenses cleaned. After start-up, any lights that aren't lit need to be checked for further problems. This will greatly reduce the likelihood of period changeouts and shutdown throughout the year.
Find out how many lights can be out, per the FDA, and once that number is reached, begin a proper lighting program as described above.
I like to see the look on someones face when you tell them to replace a lamp that is not actually burned out.
[This message has been edited by Redsy (edited 09-14-2003).]