Download - Spectrapak 315
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Unitor's Combined Boiler Water Treatment Programme
SPECTRAPAK 315 Product no: 661 698738
The tests recommended to maintain boiler water within the desired level of quality when treating with UnitorAutotreat or Combitreat in conjunction with Oxygen Scavenger Plus or Oxygen Control are as follows:
A. P-alkalinity - Recommended Limits: 100 -300 ppm as
CaCO3B. Chlorides - 200 ppm maximum as Cl-.C. Condensate pH - 8.3-9.0
D. Hotwell temperature >80C
Dosage level of Autotreat/combitreat is based on the P-
alkalinity value of the boiler water. However, chlorides
and condensate pH must also be controlled andmaintained as recommended. Knowledge of all relevantparameters is desirable to enable better interpretationand correct application of treatment. To increase the
condensate pH, use Unitor's Condensate Control inconjunction with Combitreat. It is recommended to doseCondensate Control on a continuous basis, to maintain
the condensate pH within the recommended range of8.3-9.0 at all times.
Controlling AlkalinityThe alkalinity is a more accurate indicator of the boilerwater condition than pH when water quality is monitored
manually. The phenolphthalein (P) Alkalinity is measuredto determine whether the correct conditions of alkalinityexist in the boiler.
SPECTRAPAK 315
Controlling ChloridesThe chloride value will reveal any presence of dissolved salts in the boiler. An increase, gradual or sudden, in the
level of chloride is an indication of contamination by sea water and the chloride level is often used as a referencepoint when controlling rate of blowdown.
pH BOILER
Recommended limits of 9.5-11.0. An additional test to determine the pH of the boiler water can be carried out togive a better overall understanding of the boiler water quality.
pH-CondensateTo control corrosion in a boiler, condensate and feed water section, the condensate pH should be kept between 8.3and 9.0. Monitoring the pH of this water is very important in maintaining a complete Boiler Water TreatmentProgramme.
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TEST RESULTS - COMBINED TREATMENT
A.Recording - When using Unitor's Boiler Water Management all measurements are taken automatically. Whenmanually dosing, follow the following routine.
1. Log form - Combined Boiler Water Treatment Log.2. Frequency - Samples should be drawn, tested and results logged minimum every third day.
B. Reporting - The completed log sheet for the month should be distributed as shown at the bottom of the form, atthe end of each month:
1. Blue copy - to Unitor Rapid Response Centre in Norway (address labels at back of log pad)2. Beige copy - Vessel owner3. Lilac copy - to be kept onboard
C. Evaluation
1. Logs will be reviewed at the Unitor Rapid Response Centre for adherence to recommended specifications, byUnitor's Rapid Response staff.2. A report letter indicating the status of the ship's system, any problems and relevant recommendations will be
issued to the ship's operator.
SPECTRAPAK 315Low Pressure Boiler Water Test KitBoiler Water Treatment Test Kit P. ALKALINITY, CHLORIDE & pH
Product no: 661 698738
P ALKALINITY TEST1. Take a 200 ml water sample in the stoppered bottle provided.2. Add one P. Alkalinity tablet and shake to disintegrate. If P. Alkalinity is present the sample will turn blue.
3. Repeat tablet addition until the blue colour changes to permanent yellow.
CALCULATION
P. Alkalinity ppm (CaCO3) = (Number of tablets used x 20) -10.For example:lf 8 tablets are used then P. Alkalinity = (8 x 20) -10 = 150 ppm.
4. Mark this result on the log sheets provided, against the date on which the test was taken.
CHLORIDE TEST
1. For boilers under 30 bar (KG/CM2) take a 50 ml sample in the stoppered bottle provided.
2. Add one chloride tablet and shake to disintegrate, sample will turn yellow if chlorides are present3. Repeat tablet addition until the yellow colour changes to orange/brown.
CHLORIDE (CONT.) CALCULATION (50 ml SAMPLE)Chloride ppm = (number of tablets used x 20)-20 For example: lf 4 tablets are used then chloride ppm = (4 x 20) -20
= 60 ppm.
4. Mark the result obtained on the log sheets provided, against the date on which the test was taken.N.B. For higher expected chloride levels reduce the water sample size e.g. 25 ml sample will give steps of 40 ppm
per tablet used. For lower expected chloride levels increase the water sample volume e.g. 1OO ml sample will givesteps of 1O ppm per tablet used.
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Water Test Kit Selector
Application Product RocorNB
Liquid
DieselguardNB
Combitreat Liquitreat Autotreat CondensateControl
OxygenControl
OxygenScavenger
Plus
Cat.Sulphite
AlkalinityControl
HardnessControl
Enginecooling water
Rocor NBLiquid
309
Enginecooling water
DieselguardNB
309
Combinedboiler watertreatments
Combitreat 310 310 315/312 315/313 310/sulphite
Combinedboiler watertreatments
Liquitreat 310 310
Combinedboiler watertreatments
Autotreat 310 315/312 315/313
Singleapplicationboilertreatments
CondensateControl
310 310 311 311
Singleapplication
boilertreatments
Oxygen
Control315/312 315/312 311/312 311/312
Singleapplicationboilertreatments
OxygenScavengerPlus
315/313 315/313 311/313 311/313
Singleapplicationboilertreatments
Cat.Sulphite
310/sulphite 311/sulphite 311/sulphite
Singleapplicationboilertreatments
AlkalinityControl
311 311/312 311/313 311/sulphite 311
Singleapplicationboilertreatments
HardnessControl
311 311/312 311/313 311/sulphite 311 311
Can be used alone.Should always be used in combination with other product(s).
The numbers represent the suitable Spectrapak test kit. In cells with two numbers, the number to the right is anextention kit.Sulphite represents the sulphite mini testkit.
More information about individual products and test kits is available in the Technical Product Data sheets.