General overview

The new fault data base allows a more detailed overview of the faults that are reported. In Table 2 the number of faults and total time lost as a function of the system and kind of fault is presented together with the overall numbers for the last period (27).

Table 2: Down time statistics for period 28$^a$

Syst/Type	Soft		Elec		Optics		Mech		Others		Total		P27
Telescope	6	02:00	5	00:45	0	$-$	2	00:20	0	$-$	13	03:05	24	08:57
Building	0	$-$	3	03:35	0	$-$	6	00:05	3	00:00	12	03:40	12	24:10
Computers	6	00:30	3	00:10	0	$-$	1	00:00	1	00:00	11	00:40	24	02:00
ALFOSC	14	01:05	3	20:00	0	$-$	1	00:05	0	$-$	18	21:10	15	02:25
MOSCA	0	$-$	0	$-$	0	$-$	0	$-$	0	$-$	0	$-$	2	00:40
NOTCam	0	$-$	2	00:05	0	$-$	0	$-$	0	$-$	2	00:05	17	10:15
StanCam	1	00:10	0	$-$	0	$-$	0	$-$	0	$-$	1	00:10	11	02:15
Others	2	01:15	1	00:00	0	$-$	3	00:10	0	$-$	6	01:25	2	00:00
Total	29	05:00	17	24:35	0	$-$	13	00:40	4	00:00	63	30:15	107	50:42
P27	46	05:55	24	27:37	5	03:00	24	07:45	8	06:25	107	50:42
$^a$For each system-type category the total number of faults and total time lost are given

One conclusion that can be drawn from the information in Table 2 is that beyond the problem with ALFOSC and the safety system of the building there were no other significant problems causing downtime.