IS 10392 : 2026 Feed Water and Boiler Water for Low and Medium Pressure Land Boilers - Specification
1 SCOPE
1.1 This standard lays down specifications for feed water and boiler water for low and medium pressure land boilers (boilers operating up to 5.9 MN/m2).
1.2 Land boilers operating at pressure higher than 5.9 MN/m2; marine boilers and locomotive boilers are not covered in this standard.
1.3 The following boilers are covered in this standard:
a) Water tube boilers with super-heaters, turbine operation having process restrictions on steam purity;
b) Water tube boilers without super-heaters, turbine operation and with no process restrictions on steam purity;
c) Fire tube boilers; and
d) Industrial coil type water tube boilers.
2 REFERENCE
The standards listed in Annex A contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publications, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards.
| IS No. | Title |
| IS 1680 : 2022 | Code of practice for treatment of water for low and medium pressure land boilers (fourth revision) |
| IS 4343 : 2023 | Code of practice for treatment of water for high pressure boilers (second revision) |
| IS 3025 | Methods of sampling and test (physical and chemical) for water and wastewater: |
| (Part 11) : 2022 | ISO 10523 : 2008 pH value (second revision) |
| (Part 14) : 2013 | ISO 7888 : 1985 Specific conductance (wheatstone bridge, conductance cell) (second revision) |
| (Part 16) : 2023 | Filterable residue (total dissolved solids) at 180 °C (second revision) |
| (Part 17) : 2022 | Non-filterable residue (total suspended solids at 103 °C-105 °C) (second revision) |
| (Part 21) : 2008 | hardness (second revision) |
| (Part 23) : 2023 | Alkalinity (second revision) |
| (Part 28) : 2024 | Sulphites (second revision) |
| (Part 31/Sec 1) : 2022 | Phosphorus, Section 1 Determination by vanadomolybdophosphoric acid, stannous chloride ascorbic acid and persulphate method (second revision) |
| (Part 35) : 2024 | Silica (second revision) |
| (Part 38) : 2025 | Dissolved oxygen (second revision) |
| (Part 39) : 2021 | Oil and grease (second revision) |
| (Part 42) : 2024 | Copper (second revision) |
| (Part 53) : 2024 | Iron (second revision) |
| (Part 62) : 2023 | Tannins (second revision) |
| (Part 73) : 2021/ISO 20236 : 2018 | Instrument based method for determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) |
| IS 11671 : 2022 | Glossary of terms relating to boiler water (first revision) |
| IS 17614 (Part 7) : 2021/ISO 5667-7 : 1993 | Water quality - Sampling: Part 7 Guidance on sampling of water and steam in boiler plants |