Did quarterly Zero Count and Flow Testings for the vacuum connected dust monitors. NOTE: Did not go into the PSL enclosure. Will check these dust monitors on next PSL entry.

   All monitors were Zero Count. Had to run the Zero Test a couple of times to clean and zero the dust monitor at HAM6. 

   All monitors are with in flow range (2.8l/m +- 5%). The flows on the dust monitor at HAM6 and in the Biergarten are a bit on the low side. Will check the trend on the next inspection, and adjust the flows as necessary. 

   All vacuum pumps checked out: temperatures all <150f and vacuum readings with in range (19inHg +-5%). Made minor by-pass flow adjustments on the CS and End-X vacuum pumps.