GB/T 42688-2023 in English
VALIDShips and marine technology—Marine environment protection—Specifications on design and selection of sorbents
- Issued on:2023-05-23
- Implemented on:2023-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$185.00
| Standard No: | GB/T 42688-2023 |
| Document status: | VALID |
| Title in English: | Ships and marine technology—Marine environment protection—Specifications on design and selection of sorbents |
| Title in Chinese: | 船舶有毒液体物质残余物排放处理要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2023-05-23 |
| Implemented on: | 2023-12-01 |
| Chinese Classification: | U47-Compartment auxiliary machine |
| Professional Classification: | GB-National Standard |
| Related Topics: | Toxic Chemicals
liquid handler total liquid handling emit toxic substances liquid handling tank cod organic emissions quality residual chain residual mass energetic liquid matter liquid substance Flammable Toxic Gas Emissions quality residual Pretreatment emissions Ship engine emissions Handling of related substances material properties Disposal and Discharge Jena liquid handling Wastewater Treatment Toxic Organic Substances biological toxic emissions Military ship emissions |
《GB/T 42688-2023船舶有毒液体物质残余物排放处理要求》由TC137（全国船用机械标准化技术委员会）归口，TC137SC9（全国船用机械标准化技术委员会海上环境保护分会）执行，主管部门为国家标准委。
Introduction
1. Background of standard formulation and analysis of technological evolution
With the increasing awareness of global marine environmental protection, the International Maritime Organization (IMO) and governments of various countries have successively issued a series of regulations to reduce ship pollution. The National Standard of the People's Republic of China GB/T 42688-2023 came into being in this context, aiming to regulate the discharge and treatment requirements of ship toxic liquid substance residues and ensure marine ecological safety.
2. Comparison of standard frameworks
| Classification category | Definition | Discharge requirements |
|---|---|---|
| X-class toxic liquid substances | Toxic liquid substances that cause significant harm to marine resources or human health. | Discharge is prohibited and must be discharged into receiving facilities. |
| Class Y Toxic Liquid Substances | Toxic liquid substances that are harmful to marine resources or human health or affect the maritime environment. | Strictly restrict discharge conditions and must comply with GB3552 standards. |
| Class Z Toxic Liquid Substances | Toxic liquid substances that are less harmful to marine resources or human health. | Discharge is allowed, but must be kept away from protected areas. |
3. Recommendations for Implementation of the Standard
3.1 Pretreatment and Discharge Management
Ship cargo tank prewashing procedures are key steps to ensure that toxic liquid substance residues are properly handled. For Class X and Class Y substances, cleaning must be carried out strictly in accordance with the procedures specified in Appendix A to reduce environmental risks. For example, when unloading highly viscous or solidified substances, high-temperature hot water should be used for cleaning, and the amount of washing water should be ensured to meet the calculation requirements.
3.2 Emergency Measures and Training
Crew members should receive regular training and be familiar with the handling procedures for different categories of toxic liquid substances. In emergency situations, such as leakage or accidental discharge, the emergency plan must be immediately activated, the port reception facilities must be contacted, and effective control measures must be taken to prevent the expansion of pollution.
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