GB/T 12145-2016 in English

《GB/T 12145-2016火力发电机组及蒸汽动力设备水汽质量》由524（中国电力企业联合会）归口，主管部门为中国电力企业联合会。

1 Scope

This standard specifies the steam and water quality for power plant and steam-generating equipment during their normal operation and startup of shutdown (standby) plant.
This standard is applicable to power plant and steam-generating equipment with the main steam pressure of boiler not less than 3.8MPa (gauge pressure).

2 Normative References

The following document for the application of this document is essential. For dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
DL/ T 1358-2014 Quality Criterion of Water and Steam for Generating Unit and Steam Power Equipment

3 Terminologies and Definitions

For the purpose of this standard, the following terminologies and definitions apply.
3.1
Cation conductivity
The conductivity of water sample measured after being subjected to hydrogen strong acid cation exchange resin treatment.
3.2
Feed water system without copper alloys
The feed water system whose components and equipment (excluding condenser) is in contact with water and steam contains no copper or copper alloy materials.

Foreword I
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Quality Criteria of Steam
5 Quality Criteria of Boiler Feed Water
6 Quality Criteria of Condensate
7 Quality Criteria of Boiler Water
8 Quality Criteria of Boiler Feed Water
9 Quality Criteria of Desuperheating Water
10 Quality Criteria of Drainage and Production Backwater
11 Quality Criteria of Closed Cycle Cooling Water
12 Quality Criteria of Heating Network Makeup Water
13 Quality Criteria of Cooling Water of Internal Water Cooling Generator
14 Steam and Water Quality Criteria during Startup of Shutdown (Standby) Plant
15 Treatment in Case of Steam and Water Quality Deterioration