Standard Briefing:Stadard ID: GB/T 17435-2025
Stadard Title: Design and installation of electrolysis of seawater anti-fouling system for ship
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 17435-2025 | English | 299 |
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Design and installation of electrolysis of seawater anti-fouling system for ship
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GB/T 17435-2025
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| GB/T 17435-1998 | English | 249 |
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Design and installation of electrolysis of seawater anti-fouling system for ship
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GB/T 17435-1998
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Basic Data: | Standard ID | GB/T 17435-2025 (GB/T17435-2025) | | Description (Translated English) | Design and installation of electrolysis of seawater anti-fouling system for ship | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U05 | | Classification of International Standard | 47.020.05 | | Word Count Estimation | 14,160 | | Date of Issue | 2025-04-25 | | Date of Implementation | 2025-08-01 | | Older Standard (superseded by this standard) | GB/T 17435-1998 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | Contents, Scope, and Excerpt:GB/T 17435-2025.Design and installation of marine electrolytic seawater antifouling devices
ICS 47.020.05
CCSU05
National Standard of the People's Republic of China
Replace GB/T 17435-1998
Design and installation of marine electrolytic seawater antifouling device
Released on 2025-04-25
2025-08-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of contents
Preface III
1 Range 1
2 Normative references 1
3 Terms and Definitions 1
4 Design of the device 1
5 Composition and process of the device 2
6 Technical Requirements 3
7 Installation requirements of the device 4
8 Chlorine concentration detection 5
9 Acceptance Rules 5
References 6
ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 17435-1998 "Design and installation of marine electrolytic seawater antifouling equipment" and is consistent with GB/T 17435-1998.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The definition of residual chlorine has been changed (see 3.5, 3.5 of the.1998 edition);
b) The design indicators have been changed (see 4.1, 4.1 of the.1998 edition);
c) The calculation formula for electrolysis current has been changed (see 4.5, 4.5 of the.1998 edition);
d) Added the requirements for the seawater temperature at the inlet of the electrolyzer (see Chapter 5);
e) The flow chart of the marine electrolytic seawater anti-fouling device has been changed (see Figure 1, Figure 1 of the.1998 edition);
f) The conditions of use have been changed (see 6.1, 6.1 of the.1998 edition);
g) The technical requirements for electrolytic cells have been changed (see 6.2, 6.2 of the.1998 edition);
h) The service life and technical indicators of the anode have been changed (see 6.3.2, 6.3.2 of the.1998 edition);
i) Added optional cathode materials (see 6.3.3);
j) Added the requirement that the rectifier be equipped with high temperature protection (see 6.4.3);
k) Added the requirements for filter mesh aperture (see 6.5.1);
l) Added requirements for filter structure (see 6.5.2);
m) The corrosion resistance requirements for pipelines, etc. have been changed (see 6.6, 6.6 of the.1998 edition);
n) Changed the installation requirements for flow meters (see 7.3.1, 7.3.1 of the.1998 edition);
o) Changed the requirements for chlorine concentration testing (see Chapter 8, Chapter 8 of the.1998 edition);
p) The acceptance requirements for installation quality have been changed (see 9.2, 9.2 of the.1998 edition);
q) Added the detection method and index requirements for the DC power consumption and current efficiency of the electrolytic cell (see 9.4);
r) The content on inspection and maintenance has been deleted (see Chapter 10 of the.1998 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed and coordinated by the National Technical Committee for Standardization of Marine Vessels (SAC/TC12).
This document was drafted by. Luoyang Ship Material Research Institute (China Shipbuilding Industry Corporation 725 Research Institute), Qingdao Shuangrui Marine Environmental Protection Technology Co., Ltd.
Environmental Engineering Co., Ltd.
The main drafters of this document are. Yin Guofeng, Wang Tingyong, Xu Fengqi, Li Xunzhou, Fu Hongtian, Guo Yu, Zhao Xiaofeng, Han Yan, Wan Jianxin, Wang Qi,
Lu Xiaowei and Wang Hui.
This document was first published in.1998 and this is the first revision.
Design and installation of marine electrolytic seawater antifouling device
ScopeThis document specifies the design, composition and process, technical requirements, installation requirements, chlorine concentration detection and
Testing and acceptance rules.
This document is applicable to electrolytic tank type marine electrolytic seawater anti-fouling devices used in seagoing vessels, floating docks, offshore facilities, etc.
In situations where biological fouling occurs, an electrolytic cell type seawater electrolysis anti-fouling device shall be used as a reference.
Normative ReferencesThe contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 3783-2019 Basic requirements for marine low-voltage electrical appliances
GB/T 22839-2010 Technical requirements for sodium hypochlorite generation equipment for electrolysis of seawater
Terms and DefinitionsThe following terms and definitions apply to this document.
3.1
Biofouling
Biological growth on the surface or inside of the bottom of the ship and all other facilities in contact with seawater, causing damage to their functions.
[Source. GB/T 15919-2010, 5.24, modified]
3.2
Direct current is passed between the specially made anode and cathode, and the effective chlorine produced by electrolysis of seawater is used to prevent biological fouling.
3.3
Electrolytic cell
A device in which seawater electrolysis reaction and solution reaction occur in the seawater electrolysis system to produce effective chlorine.
3.4
Available chlorine
A general term for hypochlorous acid and hypochlorite ions that are toxic to attached marine organisms and can inhibit the attachment and growth of marine organism larvae or spores.
3.5
Residual chlorine
The available chlorine in the cooling water outlet water of the protected equipment.
4.Device design
4.1 The design indicators are as follows.
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