GB20826-2021

Code of safety for the use of high pressure water jetting equipment by divers

潜水员高压水射流作业安全规程

GB 20826-2021 は現行の中国強制国家規格です：Code of safety for the use of high pressure water jetting equipment by divers。業界：機械。テーマ：製品安全。施行日：2022年3月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard specifies the safety requirements for divers performing underwater high pressure water jetting and ultra high pressure water jetting operations. It is applicable to the salvage and rescue field, specifically for underwater cleaning or cutting tasks. It is mandatory for all personnel and organizations involved in underwater high-pressure water jetting operations in China. The standard covers environmental conditions, equipment, personnel, and emergency procedures, referencing GB 26123 and GB 28396 for diving safety.

技術要求

The standard outlines comprehensive safety protocols divided into several key areas. First, it defines strict environmental conditions, setting limits on water current velocity and wind force depending on the diving method used (e.g., scuba, surface-supplied, or saturation diving). Operations must be suspended if environmental parameters exceed the specified limits without proper risk assessment. Second, the standard details equipment requirements for high-pressure water pumps, hoses, and jetting guns. It mandates that hoses must have a minimum burst pressure and be equipped with safety devices like flexible buckles to prevent whipping in case of failure. High pressure guns must feature normally closed control valves and safety locks to prevent accidental operation. Third, it establishes personnel requirements, defining the roles and qualifications for diving supervisors, divers, and pump operators. All personnel must undergo specific training for high-pressure water jetting operations and wear appropriate personal protective equipment (PPE), especially when handling ultra-high pressure devices. Finally, the standard provides detailed operation procedures covering pre-dive checks, active operation protocols, and post-dive maintenance. It emphasizes continuous communication between the diving supervisor and pump operator, and strictly prohibits modifying the structure of the high-pressure water gun.

試験方法

The standard does not specify laboratory testing methods for products but rather outlines operational safety checks and procedures. It includes a mandatory pre-operation safety checklist (Appendix A) to verify equipment integrity, hose pressure ratings, and environmental conditions before commencing work. Additionally, it requires regular maintenance checks every six months, including inspecting pump components, hose aging, and safety valve validity.

よくある質問

What products or operations are regulated under GB 20826-2021?

GB 20826-2021 regulates underwater high pressure and ultra high pressure water jetting operations performed by divers, primarily in the salvage and rescue industry.

Are there any significant updates from the previous GB 20826-2007 version?

Yes, the 2021 version introduces the definition of ultra high pressure water jetting, updates requirements for high pressure hoses and guns, and modifies personnel configuration and emergency response protocols.

Does GB 20826-2021 reference any international standards?

The standard aligns with international practices and references documents such as IMCA D 049 and ADCI Consensus Standards in its bibliography, alongside Chinese national standards like GB 26123.

The summary above provides a high-level overview of GB 20826-2021. To ensure complete compliance for your diving operations and equipment entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 20826-2021 today to access all detailed parameters, safety checklists, and operational procedures.

適用のヒント

種別: 安全
CCS: R54
ICS: 03.220.40
所管部門: Ministry of Transport
技術委員会: Ministry of Transport