9.3. SR 06-15-2015 �j
Elk = - Request for Action
River
To Item Number
Mayor and City Council 9.3
Agenda Section Meeting Date Prepared by
Work Session June 15, 2015 Rich Czech, Ice Arena Manager
Item Description Reviewed by
Olympic Ice Rink Update Cal Portner, City Administrator
Reviewed by
Action Requested
Receive information.
Background/Discussion
The Olympic Ice Rink has been dropping refrigerant at an increasing rate. After the last large
replenishment, staff contracted to have a professional leak test completed.
Contractors are completing the repairs at this time. The arena manager will provide an update on the
work and discuss the future of the rink.
Financial Impact
The ice plant and equipment are nearing the end of its expected useful life and decisions will need to be
made with regard to its future.
Attachments
• Background Information
• EPA R22 Phase Out Information
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Background for the Olympic Ice plant
In 1996, a used ice plant was purchased to refrigerate the Olympic Rink. The ice plant was built in 1983 and when
purchased had about 15,000 operating hours. The ice plant was built in was purchased from RinkSystems for
$66,200. The plant came from an arena from Stone Mountain, Georgia.
Following is a list of significant repairs:
■ 2001 —Oil reclaim not working properly, rewired solenoids and relays.
■ 2002—Ice plant experienced excessive vibration when the compressor#1 ran causing short cycles of fill
and dump times in the pumpers that pump the refrigeration out to the floor. Anti-vibration brads where
installed on the discharge side of compressor#1.
o 3/4" Elbow cracked on pumper vent leaking 4,470 pounds of refrigeration.
■ 2003 —Repaired leaks to oil receiver.
o Repaired leaks to the snow melt pit
■ 2004—Replaced Evaporator tower and install back pressure regulator for the heat reclaim
o Replaced leaky flange to the float trap
■ 2005 —Replaced heat reclaimer and repaired refrigeration leaks.
o Replaced compressor# 1 motor
■ 2006 —Installed new loaders for compressors
■ 2007 —Sub Soil heating system;replaced solenoid, new temp control.
■ 2008 —Installed soft start system for the evaporator tower. Soft starts ramps up a motor in stages.
■ 2009 —Replaced carbon ring in compressor # 2
o Rebuild Compressor# 2 motor
■ 2011 —Replace motor for compressor# 1
■ 2012—Replaced valve for heat recovery
■ 2013 —Replaced traps, fittings, and gaskets for heat recovery.
■ 2015 —Shut down the Ice plant to check for R22 leaks to the evaporator tower,vessel, and rink floor
• Repair leaks in floor
• Replace and repair valves, solenoids, gaskets, and packing's in vessel.
• Level sand to rink floor.
• Flush out old glycol in sub floor heating system and replace the glycol
Refrigeration Replacement in Olympic Rink
(In pounds)
2001 = 690
2002 = 4,680
2003 = 300
2004 = 2,890
2011 = 700
2013 = 750
2014 = 500
2015 = 1,000
2015 = 2,000 —To be installed the week of June 15
Information from;
United States Environmental Protection Agency
Phaseout Schedule for HCFCs Including R-22
Under the terms of the Montreal Protocol, the U.S. agreed to meet certain obligations by specific dates
that will affect the residential heat pump and air-conditioning industry:
January 1, 2004:
The Montreal Protocol required the U.S. to reduce its consumption of
HCFCs by 35% below the U.S. baseline cap. As of January 1, 2003,
EPA banned production and import of HCFC-141b, the most ozone-
destructive HCFC. This action allowed the United States to meet its
obligations under the Montreal Protocol. EPA was able to issue 100%
of company baseline allowances for production and import of HCFC-
22 and HCFC-142b.
January 1, 2010:
The Montreal Protocol requires the U.S. to reduce its consumption of
HCFCs by 75% below the U.S. baseline. Allowance holders may only
produce or import HCFC-22 to service existing equipment. Virgin R-
22 may not be used in new equipment. As a result, heating,
ventilation and air-conditioning (HVAC) system manufacturers may
not produce new air conditioners and heat pumps containing R-22.
January 1, 2015:
The Montreal Protocol requires the U.S. to reduce its consumption of
HCFCs by 90% below the U.S. baseline.
January 1, 2020:
The Montreal Protocol requires the U.S. to reduce its consumption of
HCFCs by 99.5% below the U.S. baseline. Refrigerant that has been
recovered and recycled/reclaimed will be allowed beyond 2020 to
service existing systems, but chemical manufacturers will no longer
be able to produce R-22 to service existing air conditioners and heat
pumps.
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Elk River Arena Repair Overview
City of
Elk
River
Barn
In the 70's the Barn originally
had natural ice, it wasn't until
1981 that artificial ice was
installed. The original
refrigeration system, from
1981 is still in operation today.
The floor was redone in 2004.
6
Olympic
The Olympic rink was r
built in 1997.
used refrigeration �. -
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system, which was built in
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refrigeration system.
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There are two types of
refrigeration systems:
• Direct
• Indirect
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Direct
A direct refrigeration system, the
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type we have, circulates the primary .
refrigerant (R-22) directly through
the ice rink floor and refrigeration
system, heat is removed from the
floor by the refrigerant, therefore
no secondary refrigerant or heat
exchange is needed.
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Indirect
In an indirect system, the primary
refrigerant (R-22 for example) remains ' �-�
in the refrigeration room. Heat is
removed from the ice rink floor
through a secondary refrigerant
(glycol/water solution for example)
that is circulated in the floor. The heat
exchange between the primary and
secondary refrigerants takes place in
the refrigeration room.
The life expectancy of either of these
systems is 25-30 years.
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Pressure Tests
Pressure tests were performed on the
three major components of the
Olympic refrigeration system.
• The Vessel
• The Floor
• The Evaporator Tower r '�
The Floor
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The EvaporatorTower
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Findings
■ Major refrigeration leak in the floor
to the return header to one of the
goosenecks. _
Findings
■ Pipe repairs
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Findings
Several reffigeration leaks - vessel
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Costs and Projected Timeline -
• Pressurize test $14,890
• Repairs in floor and vessel $15,000
• Leveling of Sand $12,000
• Refrigeration replacement $24,000
Total $655890 --
Timeline
■ Leveling of Sand: Week of June 15 ;
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■ Complete vessel repairs: June 19
■ System leak check: June 19 June 21 -
Vacuum system: June 22
■ Start J
ressors:com p une 25
■ Ice making: June 29
■
Skating: July 6