Sunday, August 22, 2010
EPA Proposal Cuts Pollution from Power Plants in 31 States and D.C. / Rule would reduce smog- and soot-forming emissions contributing to unhealthy air
This legislation is huge - both in terms of benefits and implementation. This is part of the hidden costs of coal.
Thursday, August 19, 2010
Friday, August 13, 2010
Monday, February 9, 2009
Monday, January 26, 2009
Wednesday, January 14, 2009
Thursday, January 8, 2009
"Winter solstice is now behind us, so the days are getting longer again. Yet, your facility seems drearier. Being the sharp electrical troubleshooter that you are, you grab a light meter and take some measurements.
When you review your findings against the lighting plan, your suspicions are confirmed. Light levels really have dropped. In some places where the plan shows 45 footcandles, you measured only 25. In an inspection area that requires 90 footcandles, you measured 70. How can you figure out what’s going on?
A drop in light output is hard to isolate in time, because it tends to creep up on us. As light output diminishes a little each day, we adjust to the new normal. That makes troubleshooting more difficult, but not impossible. Light output diminishes as lamps near end of life (the output curve varies by lamp type). So, maybe it’s just be time for relamping. However, there are probably other factors to correct. Things to check include:
Light output diminishes as lamps near end of life (the output curve varies by lamp type). So, maybe it’s just be time for relamping. However, there are probably other factors to correct. Things to check include: