GB 23821-2009
Safety of machinery-Safety distances to prevent hazard zones being reached by upper and lower limbs (English Version)

Standard No.

GB 23821-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced

Replace By

GB/T 23821-2022

Latest

GB/T 23821-2022

Replace

GB 12265.1-1997 GB 12265.2-2000

Scope

This standard specifies the value of the safety distance to prevent access to mechanical danger zones in industrial and non-industrial environments. Safety distances apply to protective measures. This standard also gives information about the safety distance to prevent free access of the lower limbs to the danger zone (see 4.3). This standard applies to persons aged 14 and over (the 5th percentile of height for persons aged 14 is approximately 1 400 mm). Additionally, for the upper extremities, information is provided for children over 3 years of age (the 5th percentile of height for a 3-year-old child is approximately 900 mm) for access through openings. These safety distances apply where adequate safety can be achieved by distance alone. Because safety distances are based on size, persons with certain extreme dimensions can reach the danger zone even if the requirements of this standard are met. The chapters related to the lower limbs involved in this standard do not take into account the unforeseen contact hazards of the upper limbs in the risk assessment. The safety distance is designed to prevent people from touching the danger zone under specified conditions (see 4.1.1).

GB 23821-2009 Referenced Document

• GB/T 15706.1 Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology

GB 23821-2009 history

• 2022 GB/T 23821-2022 Safety distance of machinery safety to prevent the upper and lower limbs from touching the danger zone
• 2009 GB 23821-2009 Safety of machinery-Safety distances to prevent hazard zones being reached by upper and lower limbs
• 2000 GB 12265.2-2000 Safety of machinery Safety distances to prevent danger zones being reached by the lower limbs
• 1997 GB 12265.1-1997 Safety of machinery--Safety distances to prevent danger zones being reached by the uppar limbs
• 1990 GB 12265-1990 Mechanical protection safety distance

GB 23821-2009 Safety of machinery-Safety distances to prevent hazard zones being reached by upper and lower limbs has been changed from GB 12265.1-1997 Safety of machinery--Safety distances to prevent danger zones being reached by the uppar limbs.

GB 23821-2009 Safety of machinery-Safety distances to prevent hazard zones being reached by upper and lower limbs has been changed from GB 12265.2-2000 Safety of machinery Safety distances to prevent danger zones being reached by the lower limbs.