Fulton Ancillary Equipment SteamPac Unfired Steam Generators - Manual (Page 17)

Fulton Thermal Corp.*SteamPac Unfired Steam Generators Manual* Version 2010-0201
Page 17
Carbon Steel Stainless Steel
Parameter Feedwater Vertical
Boiler/
SteamPac
Water Horizontal
Boiler/SteamPac
Water Feedwater Vertical
Boiler/SteamPac
Water Horizontal
Boiler/SteamPac
Water
pH 7.5-9.5 8.5-10.5 8.5-10.5 6.0-9.5 8.5-10.5 8.5-10.5
Feedwater
Temperature 140F* --- --- 140F* --- ---
Hardness as
CaCO3 < 2ppm < 10 ppm < 15 ppm < 2ppm < 10 ppm < 15 ppm
Chlorides --- --- --- --- 50 ppm 50 ppm
Total
Alkalinity --- < 300 ppm < 500 ppm --- < 300 ppm < 500 ppm
Total
Dissolved
Solids --- < 2000
ppm
< 3000 ppm --- < 2000 ppm < 3000 ppm
Suspended
Solids No visual
turbidity**
No visual
turbidity**
No visual
turbidity**
No visual
turbidity**
No visual
turbidity**
No visual
turbidity**
Total
Organic
Carbon No sheen
No foam +
No sheen
No foam +
No sheen No
foam +
No sheen
No foam +
No sheen No
foam +
No sheen No
foam +
Iron Colorless
liquid++
Colorless
liquid++
Colorless
liquid++
Colorless
liquid++
Colorless
liquid++
Colorless
liquid++
Dissolved
Oxygen <1 ppm* ND ND < 5 ppm ND ND
Visual Oil ND ND ND ND ND ND
Conductivity
(
μS/cm)
--- < 2985 < 4477 --- < 2985 < 4477
NOTES:
*Feedwater temperatures below 200 o F will require an oxygen scavenger
** Suspended solids: Take a water sample. After the sample sits for 10 minutes, no solids should be visible.
+ Total Organic Carbon: Take a water sample. Shake vigorously for 30 seconds. No sheen or foam should be visible.
++ Iron: Take a water sample. Hold the sample against a white background. The water should have no visible yellow, red or
orange tinge.
ND: None Detected.
11. Water Supply
a) The quality of the water used in the boiler will affect the life of the elements and pressure
vessel and it is strongly recommended that a competent water treatment company be
consulted prior to the installation of the boiler. Elements/PV damaged due to adverse
water conditions will not be replaced under warranty.
b) Natural feedwater supplies contain solids and dissolved gases. These may promote
scale, foaming, corrosion, and/or poor steam quality. To prevent this, feedwater must be
studied individually and treated accordingly. The treatment should provide quality
feedwater to the boiler such that corrosion and deposition in the boiler will be minimized.
Thermal cycling, dissolved oxygen, high or low pH can all be major causes of corrosion.
Untreated hardness is the major cause of scale deposits. Poor quality feedwater requires
increased blowdown and increased chemical treatment costs to prevent boiler corrosion
and scaling.