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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11686.1-2025 | English | 274 |
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Small craft - Waste systems - Part 1: Waste water retention systems
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GB/T 11686.1-2025
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| GB/T 11686-2002 | English | 194 |
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Small craft -- Toilet waste retention systems
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GB/T 11686-2002
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| GB 11686-1989 | English | 199 |
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Small craft--Toilet retention and reciroulating systems for the treatment of toilet waste
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GB 11686-1989
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Standard similar to GB/T 11686.1-2025 GB/T 50034 GB/T 50082 Basic data | Standard ID | GB/T 11686.1-2025 (GB/T11686.1-2025) | | Description (Translated English) | Small craft - Waste systems - Part 1: Waste water retention systems | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | U37 | | Classification of International Standard | 47.080 | | Word Count Estimation | 14,177 | | Date of Issue | 2025-10-05 | | Date of Implementation | 2026-05-01 | | Older Standard (superseded by this standard) | GB/T 11686-2002 | | Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China | GB/T 11686.1-2025: Small craft - Waste systems - Part 1: Waste water retention systems---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 47.080
CCSU37
National Standards of the People's Republic of China
Replaces GB/T 11686-2002
Small boat wastewater system
Part 1.Wastewater Collection and Storage System
(ISO 8099-1.2018,Smalcraft-Wastesystems-
Part 1.Wastewaterretention,IDT)
Published on 2025-10-05
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document is Part 1 of GB/T 11686 "Small Boat Wastewater Systems". GB/T 11686 has the following parts published.
---Part 1.Wastewater Collection and Storage System.
This document replaces GB/T 11686-2002 "Small Boat Toilet Wastewater Collection System". Compared with GB/T 11686-2002, except for the structure...
Aside from adjustments and editorial changes, the main technical changes are as follows.
a) General requirements have been added (see 4.1, 4.2, and 4.9);
b) Added requirements for pump outlet accessories (see 9.4).
This document is equivalent to ISO 8099-1.2018 "Small boat wastewater systems - Part 1.Wastewater collection and storage".
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was submitted by China State Shipbuilding Corporation Limited.
This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Small Boats (SAC/TC241).
This document was drafted by the 708 Research Institute of China State Shipbuilding Corporation Limited.
The main drafters of this document are. Wang Le, Ma Yongzhi, Zhou Puyue, Li Renke, Xu Wanying, Zheng Zhuo, Chen Ao, Lin Guihua, Xu Likang, and Zheng Ancheng.
The document replaced by this document has been released in the following versions.
---First published in.2002 as GB/T 11686-2002;
---This is the first revision.
Introduction
The wastewater on the small boat mainly comes from domestic sewage, namely the excrement discharged by the people on board and other wastewater mixed with excrement.
The wastewater is highly polluting and cannot be discharged directly. It needs to be collected through a collection and storage system and then treated by a unified treatment system.
Preventing environmental pollution. Separating the storage and processing systems into two parts improves compatibility and promotes the rational use of resources. GB/T 11686
The purpose is to specify the design, construction and installation requirements of small boat wastewater systems, which play an important role in protecting the river and sea environment. It consists of the following parts.
---Part 1.Wastewater Collection System. The purpose is to specify the design and construction of a temporary wastewater collection system for small boats (for subsequent treatment).
Installation requirements.
---Part 2.Wastewater Treatment System. The purpose is to specify the design, construction, and installation requirements for wastewater treatment systems for small boats.
Small boat wastewater system
Part 1.Wastewater Collection and Storage System
1 Scope
This document specifies the design, construction, and installation requirements for temporary wastewater storage (for subsequent treatment) systems. This document applies to the hull of submarines.
Small boats with a length (LH) not exceeding 24m.
This document does not cover wastewater treatment systems.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
ISO 228-1 Pipe threads without a pressure seal joint - Part 1.Dimensions, tolerances and nomenclature
tion)
ISO 9093 Small boat sea valve and accessories penetrating the hull
Note. GB/T 19317-2024 Small boat sea-passing plugs and accessories penetrating the hull (ISO 9093.2020, IDT)
ISO 10133 Smallcraft Electrical Systems - Extra-low Voltage DC Devices
Note. GB/T 19311-2003 Ultra-low voltage DC devices for electrical systems of small boats (ISO 10133.2000, IDT)
ISO 13297 Smallcraft - Electrical Systems - Alternating Current and DC Power Supply
Note. GB/T 18814-2024 AC and DC devices for electrical systems of small boats (ISO 13297.2020, IDT)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
retention system
Sanitary equipment consisting of interconnected hoses, pipes, storage containers (3.6), and accessories, used to receive and retain wastewater (3.2) for subsequent use.
Emissions and disposal.
3.2
sewage
Human excrement and wastewater, including flushing water, discharged from toilets and other storage tanks intended to receive or retain human excrement.
3.3
Accessibility
The ability to inspect, dismantle, or maintain without removing permanent structures from the vessel.
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GB/T 11686.1-2025: Small craft - Waste systems - Part 1: Waste water retention systems
Status: Valid
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