Carrier 50YER036 - Water Quality Standards

Water Quality Standards
WaterQuality
Parameter
HX
Material
Closed
Recirculating
OpenLoopandRecirculatingWell
ScalingPotential-PrimaryMeasurement
pH/CalciumHardness
All
-
pH<7.5andCaHardness<100ppm
Method
IndexLimitsforProbableScalingSituations-(Operationoutsidetheselimitsisnotrecommended)
Ryznar
All
- 6.0-7.5
StabilityIndex If>7.5minimizesteelpipeuse.
Langelier
All
-
-0.5to+0.5
SaturationIndex
If<-0.5minimizesteelpipeuse.Basedupon150∞F[66∞C]HWGand
Directwell,85∞F[29∞C]IndirectWellHX
IronFouling
IronFe
2+
(Ferrous)
All
-
<0.2ppm(Ferrous)
(BacterialIronpotential)
IfFe
2+
(ferrous)>0.2ppmwithpH6-8,O2<5ppmcheckforironbacteria
IronFouling
All
-
<0.5ppmofOxygen
Abovethisleveldepositionwilloccur.
CorrosionPrevention
pH
All
6-8.5
6-8.5
Monitor/treatas
needed
Minimizesteelpipebelow7andnoopentankswithpH<8
HydrogenSulfide(H
2
S)
All
- <0.5ppm
AtH
2
S>0.2ppm,avoiduseofcopperandcoppernickelpipingorHX's.
Rotteneggsmellappearsat0.5ppmlevel.
Copperalloy(bronzeorbrass)castcomponentsareOKto<0.5ppm.
Ammoniaionashydroxide,chloride,
nitrateandsulfatecompounds
All
-
<0.5ppm
Maximum
MaximumAllowableatmaximumwatertemperature.
ChlorideLevels
50°F(10°C) 75°F(24°C) 100°F (38°C)
Copper - <20ppm NR NR
CuproNickel - <150ppm NR NR
304SS - <400ppm <250ppm <150 ppm
316SS - <1000ppm <550ppm < 375 ppm
Titanium - >1000ppm >550ppm >375 ppm
ErosionandClogging
ParticulateSizeand
Erosion
All
<10ppmofparticles
andamaximum
velocityof6fps[1.8m/s].
Filteredformaximum
800micron[800mm,
20mesh]size.
<10ppm(<1ppm"sandfree"forreinjection)ofparticlesandamaximum
velocityof6fps[1.8m/s].Filteredformaximum800micron[800mm,
20mesh]size.Anyparticulatethatisnotremovedcanpotentially
clogcomponents.
Notes:
Rev.: 6/2/2010
• NR - Application not recommended.
• "-" No design Maximum.
• Closed Recirculating system is identified by a
closed pressurized piping system.
• Recirculating open wells should observe the open recirculating design considerations.
Abovethegivenlimits,scalingislikelytooccur.Scalingindexesshouldbecalculatedusingthelimitsbelow
Scalingindexesshouldbecalculatedat150∞F[66∞C]fordirectuseandHWGapplications,andat90∞F[32∞C]forindirectHXuse.
Amonitoringplanshouldbeimplemented.
Table 3: Water Quality Standards
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Wa t e r- t o - W a t e r ( 5 0 Y E R ) S e r i e s - P u r o n
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R e v. : 1 J u l y, 2 0 1 0