









 |
    
|
Log Book for February 18, 2003
General Engineering Report
Jean Lagarde Reporting
Generator/Electricity - measured at 0457 hrs: Voltage at 250 vac. Amperage is at about 1 amp. Frequency 61 Hertz and DC volts is at 15 vdc.
Propane Tanks - measured at 0457 hrs: #1 tank (North side) is at 0%. #2 tank (South side) is at 19%. The furnace tank is at 55%. The Hobbs meter is at 2354.4. We did not perform the generator stopping experiment overnight because we had to transfer some video to DVD for the first time in the evening an were not sure how long it would take. Somebody had the idea to turn the thermostat completely down though and temperature was quite fine in the hab when we woke up (we did not bother measuring it).
Water: The water tank was refilled from 10 to 50 gallons at 2300 hrs 17 Feb, and another time from 10 to 50 gallons at 17:30 today. Part of the large usage is due to four showers being taken today. I have set up some sort of an honor system list yesterday with two empty columns for showers and two for sponge baths, but told the crew it's OK to take more on a day and less another as long as they mark it and works out on average. If four showers a day becomes a trend though I will have to enforce a more rigid schedule.
Additional Activities: Our toilet concerns have been solved today by the wonderful work of Matt Bamsey from mission support who has got the company to send us three more porta-potty for free.
Since Amaury, the official water refiller, was away on EVA this afternoon I performed the refill duty for the first time today. As luck would have it, the water stopped pumping in at around 30 gallons. Upon investigation after shutting the pump switch I found that the flexible plastic pipe from the main tank outside was bent; Jim Oliver, who came out to help, noticed that the cause was that the rake (!) that was propping the pipe up had fallen (possibly in part because of an afternoon wind storm, and because of the vibrations caused by the pumping). I fixed the problem for now by re-rounding the pipe with pliers and inserting the previously bent area in the opening in the cover of the tank so it would keep its shape. Jim and I are concerned however that the bending might have created a weak point in the pipe. We have held the pipe up so it doesn't bend much more securely than with the rake, by attaching it with rope to one of the legs of the hab. The pumping proceeded normally after that fix.
I have now fully implemented the GreenHab isolation procedure. More details with the GreenHab report.
|
|
|