GB 44019-2024Safety requirements for tank cleaning-washing operation of chemical tankers (English PDF)

Foreword

This 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: 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 is proposed and coordinated by the Ministry of Transport of the People's Republic of China: Safety requirements for tank cleaning of chemical tankers

1 Scope

GB 44019-2024 is the Chinese national standard on safety requirements for tank cleaning-washing operation of chemical tankers, in the field of services and company organization. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 29 April 2024 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 November 2024. Classification: ICS 03.220.40, CCS R22. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This document specifies the basic requirements, preparation, tank cleaning, degassing and safe operation requirements for tank cleaning operations on chemical tankers: This document is applicable to tank cleaning operations of vessels of 150 gross tonnage and above carrying bulk chemicals within the waters under the jurisdiction of my country:

2 Normative references

The contents of the following documents constitute the 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 3552 Standard for the control of water pollutant emissions from ships

GB 16993 Safety regulations for preventing dangerous oxygen deficiency in enclosed spaces on board ships GB 39800:

2 Specification for personal protective equipment Part 2: Petroleum, chemical, and natural gas lutionfromships)

3 Terms and definitions

The following terms and definitions apply to this document: 3:

1 Tank washing Using water, chemical cleaning agents, etc: as the medium, the tank cleaning equipment is used to clean the inner surface and components of the liquid cargo tank, as well as the auxiliary piping and cargo pump: Cargo residue operations: [Source: GB 41730-2022, 3:1, modified] 3:2 tank washing machines A tank washing device (3:1) which is driven by a driving device and changes the spray angle of a nozzle in different directions:

Note: Tank cleaning machines are divided into fixed tank cleaning machines and mobile tank cleaning machines, and are available in single-nozzle and multi-nozzle types: [Source: GB 41730-2022, 3:2, modified] 3:

3 Inert gas A gas or mixture of gases that does not contain sufficient oxygen to sustain combustion:

Note: Inert gases include flue gas, nitrogen, etc: 3:

4 Inerting The operation of injecting inert gas into the cabin to achieve a state where the oxygen content of the gas in the cabin has dropped to 8% by volume or below: [Source: GB 41730-2022, 3:8, modified]