DQR ID | Subject | Data Streams Affected |
---|---|---|
D080222.3 | NSA/SKYRAD/C1 - IRT mirror heater failure | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
D080418.1 | NSA/SKYRAD/C1 - Direct and Diffuse incorrect | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
D080630.1 | NSA/SKYRAD/C1 - Tracker inoperative | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/2007 | 0000 | 02/11/2008 | 1135 |
Subject: | NSA/SKYRAD/C1 - IRT mirror heater failure |
DataStreams: | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Description: | The heater of the IRT gold mirror failed due to a broken wire (that probably occurred on 12/13 during maintenance of the solar tracker) allowing snow and frost to accumulate on the mirror until it was cleared during daily preventative maintenance. The problem was corrected when the heater wires were replaced. |
Measurements: | nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/17/2008 | 0632 | 04/23/2008 | 1815 |
Subject: | NSA/SKYRAD/C1 - Direct and Diffuse incorrect |
DataStreams: | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Description: | The short_direct_normal (NIP) instrument and cable were damaged by tracker rewind malfunction. Tracker and NIP replaced on 4/22 2200GMT but tracker not operational until 4/23 1815GMT. Thus, down_short_diffuse_hemisp (8-48) was not shaded 4/22 to 4/23. Do not use 8-48 data from 4/22 to 4/23. NIP data is not recoverable during entire time but can be estimated using component sum for each 1 minute data: Direct = (global - diffuse)/cos(zenith angle) |
Measurements: | nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/27/2008 | 2000 | 06/30/2008 | 1740 |
Subject: | NSA/SKYRAD/C1 - Tracker inoperative |
DataStreams: | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Description: | Tracker stopped working at this site during the time range specified. Reason for failure is unknown. Tracker power cycled and restarted by maintenance 06/30 2008 1740 GMT. The short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48) data are bad during this time. Data are not recoverable. |
Measurements: | nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|