York YST - TABLE 7 - Recommended Limits for Boiler Water (Based on Drum Water Analyses)

JOHNSON CONTROLS
87
SECTION 7 - PREVENTIVE MAINTENANCE
FORM 160.67-O2
ISSUE DATE: 10/9/2020
7
TABLE 7 - RECOMMENDED LIMITS FOR BOILER WATER (BASED ON DRUM WATER ANALYSES).
PRESSURE AT
OUTLET OF STEAM
GENERATING UNIT,
PSIG
TOTAL
SOLIDS
PPM
OH
ALKALINITY
PPM
SILICA
PPM
PHOSPHATE
PPM
SULFITE
PPM
HARDNESS
PPM
CHLORIDES
PPM
0-150
151-450
451-750
751-900
2,000
1,500
1,000
750
200
100
60
55
50
35
25
10
50
50
25
25
30
30
25
20
0
0
0
0
250
200
150
50