GB22448-2025

Non-destructive testing instruments—Protection rules for industrial X-ray radiographic equipment below 500kV

无损检测仪器 500kV以下工业X射线探伤机防护规则

GB 22448-2025은(는) 시행 예정인 중국 강제 국가 표준입니다: Non-destructive testing instruments—Protection rules for industrial X-ray radiographic equipment below 500kV. 산업: 전자. 주제: 제품 안전. 시행일: 2026년 8월 1일.

적용 여부는 제품 범위, 인증 경로, 주관 당국 공고, 전환 규정에 따라 달라집니다. 컴플라이언스 판단에 사용하기 전에 번역을 의뢰하거나 공식 출처를 확인하세요.

컴플라이언스 개요

이 개요는 현재 영어로만 제공됩니다.

적용 범위

This standard applies to the design, manufacture, installation, and use of industrial X-ray radiographic equipment operating below 500 kV, including fixed, mobile, and portable models. It is mandatory for manufacturers and operators of NDT instruments in China. Non-destructive testing equipment with similar radiation source ranges for non-flaw detection purposes may also refer to this standard.

기술 요구 사항

The standard specifies comprehensive radiation protection requirements for X-ray machines, focusing on leakage radiation dose equivalent rates at specific distances. It mandates strict safety features for X-ray tubes and controllers, such as beam limiting devices, emergency stop switches, and key-operated security. Manufacturers must ensure shielding materials and connection cables meet specific length and safety criteria to prevent unauthorized radiation exposure. Additionally, the standard outlines protection rules for X-ray inspection workplaces, requiring separate operation rooms, shielded doors with interlocks, and proper ventilation. Refer to GB 18871 for basic standards on ionizing radiation protection.

시험 방법

Radiation protection testing must be conducted using a calibrated dosimeter that meets specific measurement ranges and energy response criteria. Operators are required to perform annual radiation protection inspections for continuously used X-ray flaw detectors. The standard also details area monitoring protocols, dividing mobile workplaces into control zones and supervised areas based on ambient dose equivalent rates.

자주 묻는 질문

What products are regulated under GB 22448-2025?

It regulates industrial X-ray radiographic equipment operating below 500 kV, encompassing fixed, mobile, and portable NDT instruments.

Are there any updates from the previous version of GB 22448?

Yes, the 2025 version replaces the 2008 edition, adding requirements for X-ray tubes, connection cables, and workplace protection, while updating leakage radiation limits. Manufacturers must transition to the new requirements by August 2026.

How does GB 22448-2025 relate to other radiation standards?

It works in conjunction with GB 18871, which provides the basic standards for ionizing radiation protection and the safety of radiation sources.

The summary above provides a high-level overview of GB 22448-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 22448-2025 today to access all detailed parameters, tables, and testing procedures.

적용 참고 사항

유형: 안전
CCS: N78
ICS: 19.100
주관 부처: Ministry of Industry and Information Technology
기술 위원회: National Technical Committee on Testing Machines of Standardization Administration of China