FULTON RBC1250 - Recommended Water Conditions

RB-RBC-IOMM-2015-1
Fulton Ltd
Page 60
APPENDIX - A
Horizontal Steam Boilers
Recommended Water Conditions
Technical Information
Sheet No. 140 Issue 1
Every effort is made to ensure accuracy at time of going to press. However as part of our policy of continual product improvement, we reserve the right to alter specications without prior notice.
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Fax: +44 (0) 117 972 3358
E-mail: sales@fulton.co.uk
Website: www.fulton.co.uk
Fulton Ltd
5 Fernhurst Road, Fishponds, Bristol.
BS5 7FG. England.
FM 28400
003
FM 28400
IMPORTANT
It is very important that a strict water management program is followed to ensure trouble free boiler
operation.
The following are recommended for feedwater and for boiler water
FEEDWATER (water entering boiler)
pH Value 8.5 to 9.5 tested at room temperature.
Hardness Less than 2.0 mg/kg in the form of CaCO
3
.
Suspended Solids None
Chloride Less than 50 mg/kg.
Organic Matter Less than 5 mg/kg.
Oil None
Minimum Temperature 85 °C
BOILER WATER (water inside boiler)
pH Value 10.5 - 12.0, tested at room temperature.
Hardness Not detectable.
Suspended Solids Less than 200 mg/kg.
Chloride Less than 500 mg/kg.
Oxygen Scavenger, Sodium Sulphite or Tannin 30 to 70 mg/kg.
Phosphate Less than 50 mg/kg, in the form of PO
4
.
Total Alkalinity Less than 1000 mg/kg.
Caustic Alkalinity Minimum 300 mg/kg as CaCO
3
.
Total Dissolved Solids (TDS) Less than 3500ppm.
Iron Less than 1 mg/kg.
Silica Less than 150 mg/kg, in the form of SiO
2
.
Dissolved Oxygen None
KEY
mg/kg = Milligrams per Kilogram
CaCO
3
= Calcium Carbonate
PO
4
= Phosphate
SiO
2
= Silicon Dioxide
PPM = Parts Per Million
1 Grain hardness = 17.118 ppm
therefore 70 ppm = 4.10 grains hardness
For practical
purposes mg/kg
= ppm
It is critical that the boiler water pH be
alkaline in the range 10.5 - 12.0.
Daily boiler blowdown is essential to
help prevent formation of deposits
and reduce Total Dissolved Solids
(TDS).
Consult your water treatment specialist
to establish the frequency and duration
of blowdown required to achieve the
required conditions.
!