GB/T 12145-2016 PDF English
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GB/T 12145: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 12145-2016 | 125 | Add to Cart | Auto, 9 seconds. | Quality criterion of water and steam for power plant and steam-generating equipment | Valid |
| GB/T 12145-2008 | 85 | Add to Cart | Auto, 9 seconds. | Quality criterion of water and steam for generating unit and steam power equipment | Obsolete |
| GB/T 12145-1999 | 439 | Add to Cart | 4 days | Quality criterion of water and steam for generating unit and steam power equipment | Obsolete |
| GB/T 12145-1989 | RFQ | ASK | 3 days | Quality criterion of water and steam for steam power equipment | Obsolete |
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GB/T 12145-2016: Quality criterion of water and steam for power plant and steam-generating equipment
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GB NATIONAL STANDARD ICS 27.060.30 J 98 Replacing GB/T 12145-2008 Quality criterion of water and steam for power plant and steam-generating equipment Issued on. FEBRUARY 24, 2016 Implemented on. SEPTEMBER 01, 2016 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the PRC.
Table of Contents
Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4 Steam quality criterion... 6 5 Boiler feed water quality criterion... 7 6 Condensate quality criterion... 9 7 Boiler water quality criterion... 10 8 Boiler makeup water quality criterion... 11 9 Temperature reduction water quality criterion... 11 10 Dewatering and production backwater quality criterion... 11 11 Closed recirculating cooling water quality criterion... 12 12 Heating network makeup water quality criterion... 13 13 Cooling water quality criterion for internal water-cooled generators... 13 14 Water and steam quality criterion of shutdown/standby unit at startup... 13 15 Water and steam quality degradation treatment... 15Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 12145-2008 “Quality criterion of water and steam for power plant and steam-generating equipment”. As compared with GB/T 12145-2008, the main technical changes, except the editorial modification, are as follows. - MODIFY terms and definitions; - MODIFY steam quality indicators; - MODIFY boiler feed water quality indicators; - MODIFY condensate quality indicators; - MODIFY boiler water quality indicators; - MODIFY makeup water quality indicators; - MODIFY quality criterion of dewatering and production backwater; - MODIFY cooling water quality indicators for water-cooled generators. This standard was proposed by AND shall be under the jurisdiction of the China Electricity Council. The drafting organizations of this standard. Xi'an Thermal Power Research Institute Co., Ltd., State Grid Henan Electric Power Company Electric Power Research Institute. The main drafters of this standard. Cao Jieyu, Sun Benda, Ke Yujin, Wu Wenlong. This Standard replaces the standard previously issued as follows. - GB/T 12145-1989, GB/T 12145-1999, GB/T 12145-2008. Quality criterion of water and steam for power plant and steam-generating equipment1 Scope
This standard specifies the water and steam quality for power plant and steam- generating equipment in the normal operation and startup of the shutdown (standby) unit. This standard applies to the power plant and steam-generating equipment for which the boiler main steam pressure is not less than 3.8 MPa (gauge pressure).2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this Standard. DL/T 1358-2014 Analytical methods of steam and water in power plants - Determination of total organic carbon3 Terms and definitions
The following terms and definitions apply to this document. 3.1 Cation Conductivity It refers to the conductivity of the water sample as measured after subjected to the hydrogen-type strong acid cation exchange resin treatment. 3.4 All volatile treatment (reduction); AVT (R) It refers to the treatment of boiler feed water by adding ammonia and hydrazine. 3.5 All volatile treatment (oxidization); AVT (O) It refers to the treatment of boiler feed water by adding only ammonia. 3.6 Oxygenated treatment; OT It refers to the treatment of boiler feed water by adding oxygen. 3.7 Solid alkalizing agents It refers to such agents as phosphate and sodium hydroxide which are used to treat the boiler water. 3.8 Alkalizing of boiler water with solid alkalizing agents It refers to the treatment of boiler water by adding phosphate or sodium hydroxide.4 Steam quality criterion
The main steam quality of the steam drum boiler and the direct current boiler shall comply with the provisions of Table 1.5 Boiler feed water quality criterion
5.1 The quality of feed water shall comply with the requirements in Table 2. 5.2 When the feed water is subjected to all volatile treatment, the feed water regulating indicators shall comply with the provisions of Table 3.6 Condensate quality criterion
6.1 Condensate water quality shall comply with the provisions of Table 5. Table 5 Condensate pump outlet water quality 6.2 As for the condensate passing through the fine desalination device, the quality shall with the provisions of Table 6.7 Boiler water quality criterion
As for the steam drum boiler water, its conductivity, cation conductivity, silica and chloride ion content shall be determined based on the specific water and steam quality tests OR otherwise controlled in accordance with Table 7;8 Boiler makeup water quality criterion
The quality of the boiler makeup water shall ensure that the feed water quality reaches to standards AND can be controlled in accordance with Table 9.9 Temperature reduction water quality criterion
When the boiler steam temperature is reduced in a combination manner, the quality of the temperature reduction water shall ensure that the sodium, copper, iron, and silica content in the steam after temperature reduction comply with the provisions of Table 1. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
