5.7. SR 10-13-2003 - Laserfiche WebLink

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failing. Third, the jack hammering that we use to get at the leaks has loosened the concrete around other pipes exposing them to the water when flooding the rink, which starts corrosion on the pipes. With all of this in mind, here is a summary of what has been done to correct the problem and what still needs to happen before the system can be operating. Over the last three weeks we have made over 70 repairs in the pipes that are in the fink floor. These repairs were needed not only to hold the refrigerant in the pipes, but also to hold a vacuum on the floor. We have introduced over 24,000 pounds of nitrogen into the pipes in the floor to remove moisture and any other impurities from the pipes in the floor. A vacuum has been put on the pipes in the floor to remove any other moisture that still may remain in the floor. This will take about a week, until approximately October 16th. A micron gauge will be used to determine how much vacuum is on the floor. A new floor should be able to hold a vacuum of about 500 microns over a 48 hour period, a floor that is in relatively good shape should be able to hold a vacuum between 1,200 -1,500 microns in a 48 hour period. We are hoping that the Barn's floor holds a vacuum between 2,000 and 2,500 microns in a 24-hour period. If the vacuum works, we will then install dryer cores in the system and start the ice plant. The refrigerant will be kept above freezing while the dryer cores remove additional moisture and impurities from the refrigerant. Once we feel that we have done the best we can to remove the moisture and impurities from the refrigerant, we will then start lowering the temperature of the refrigerant to start cooling the floor. If this works, we should be able to start making ice about October 21 st, and have ice available to skate on by October 24th or 25th. This could vary depending on if we experience any problems along the way. The costs for the repairs to get the rink running are close to $12,000.00. If we are able to get the Barn running by the 24th of October, we will have lost close to $20,000.00 in ice sales due to the delay. If a new floor is needed and is approved this fall we will loose about $113,000.00 in ice sales, prior to the new floor being ready for use in January. If the Barn does not operate at all this season we will loose about $170,000.00 in ice sales, admissions, and programs. There are two scenarios that could prevent us from getting the system started this year. First, if we cannot get the floor down to a vacuum below 2,500 microns, we will know that there are too many leaks in the floor to start up the system. At this point it may be unfeasible to try to fix any more leaks in the pipes in the floor. If we could find all the leaks we would be looking at November, early December before we could possibly try to start the system. At that time there would be no guarantees that we would be able to get the system operating correctly.