jeffrey.bartlett@LIGO.ORG - posted 14:26, Tuesday 16 June 2015 (19177)
Dust Counts - Door Removal at End-X
Counts were taken using the Differential mode; the counts are for particles that are greater than the reporting size but less than the next reporting size. So a 0.3µ reporting size includes all particles that are greater than 0.3µ and less than 0.5µ.
| Time | 0.3µ | 0.5µ | 1.0µ | Sampling Location |
|---|---|---|---|---|
| 12:20 | 10 | 0 | 0 | In cleanroom no work started |
| 12:34 | 270 | 240 | 290 | In cleanroom - Breaking bolts |
| 12:39 | 380 | 340 | 110 | In cleanroom - Breaking bolts |
| 12:43 | 160 | 20 | 20 | In cleanroom - Breaking bolts |
| 12:45 | 760 | 470 | 390 | By door flange - Purge air escaping from chamber |
| 12:49 | 210 | 120 | 200 | In cleanroom - Covers on door and flange |
| 12:59 | 628 | 485 | 185 | In chamber - Cover on |
| 13:02 | 100 | 20 | 10 | In cleanroom - Cover on, Door outside cleanroom |
| 13:04 | 860 | 900 | 190 | In chamber - Cover on |
| 13:15 | 0 | 0 | 0 | In clenaroom - Cover on |
| 13:17 | 830 | 500 | 150 | In chamber - Cover on |
| 13:20 | 290 | 300 | 100 | In chamber - Cover on |