GB 23821-2009 English PDF (GB23821-2009)

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GB 23821-2009: [GB/T 23821-2009] Safety of machinery. Safety distances to prevent hazard zones being reached by upper and lower limbs
GB 23821-2009
Safety of machinery.Safety distances to prevent hazard zones being reached by upper and lower limbs
ICS 13.110
J09
National Standards of People's Republic of China
GB 23821-2009/ISO 13857.2008
Replacing GB 12265.1-1997, GB 12265.2-2000
Machinery Safety
Safety distances to prevent danger zones being reached on the lower limbs
(ISO 13857.2008, IDT)
Published 2009-05-13
2009-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Preface Ⅰ
Introduction Ⅱ
1 Scope 1
2 Normative References 1
Terms and definitions 1 3
4 prevents the safe distance from the lower limbs 2
4.1 General 2
4.2 prevent a safe distance from the upper limbs of 2
4.3 prevent a safe distance from the lower limbs of 8
Usage 1 and Table 2 in Appendix A (informative) intermediate value Fact Sheet 11
Annex B (informative) to prevent free access to the lower limbs distance 14
Reference 15
GB 23821-2009/ISO 13857.2008
Foreword
Chapter 4 of this standard is mandatory, the rest are recommended.
Using the equivalent standards ISO 13857.2008 "Mechanical safety distances to prevent danger zones of the upper limbs" (in English).
This standard is equivalent translation ISO 13857.2008. For ease of use, this standard the following editorial changes made.
--- The "this International Standard" by "this standard";
"." --- replaced by a decimal decimal comma ",";
--- refers to the standard introductions were modified according to GB/T 1.1-2000, and has been cited into national standards of international country
The standard corresponding to national standards;
--- deleted international standards foreword, preface rewritten;
--- ISO 13857. 4.2.3 2008 in "(see Table 4)" is wrong, this standard be deleted.
This revised standard GB 12265.1-1997 merger and GB 12265.2-2000.
This standard and GB 12265.1-1997, GB 12265.2-2000 different following.
--- standard mandatory nature of the text was changed to mandatory provisions;
--- 4.1.1 add "shoes when in contact with the reference plane has a certain" assumptions;
--- added some description of security requirements, such as 4.2, 4.3;
--- Added Appendix A and references.
This standard Annex A, Annex B are informative annex.
This standard is proposed and managed by the national security machinery Standardization Technical Committee (SAC/TC208).
This standard was drafted. the machine Productivity Center, Qingdao City, measuring Detection Technology Limited.
The main drafters. Fu Rui, Li Qin, Zhu Ping, Ning Yan, Sun Huashan, Wang Xuezhi, Xiao Jianmin, Zhang Xiaofei, pay much.
This standard supersedes the previous editions are.
--- GB 12265.1-1997, GB 12265.2-2000.
GB 23821-2009/ISO 13857.2008
introduction
According to GB/T 15706.1, the present standards are universal safety standards (B2 category).
This standard requires C standards may be supplemented or modified.
For C standards covering, and has been designed and manufactured according to the standard machine, the required precedence class C standard.
Safe distance using the lower limbs preventing danger zones is a method to eliminate or reduce the risk of mechanical.
When prescribed safety distance, you must consider the following factors.
--- hit various states that may occur when using the machine;
--- reliable anthropometric data and population differences;
--- biomechanical factors, such as the various parts of the body and the telescopic joint rotation limit;
--- technologies and applications;
--- additional measures for special populations (eg. people with special needs), due to the size of the human body with a predetermined deviation may be required
These measures.
GB 23821-2009/ISO 13857.2008
Machinery Safety
Safety distances to prevent danger zones being reached on the lower limbs
Range 1
This standard specifies the value to reach a safe distance to prevent danger zones machinery in industrial and non-industrial environment. Safe distance suitable for protecting
Measures. This standard also gives information about preventing lower limb freely accessible safe distance from the danger zone (see 4.3).
This standard applies to persons 14 years and older (the 5th percentile of 14-year-old staff height is approximately 1400mm). In addition,
Upper limbs, provides children over 3 years (5th percentile for children 3 years old Height is approximately 900mm) required to reach through the opening
information.
Note 1. There is no consideration to prevent children from entering the lower limb of data.
These safety distances will be able to apply to access to safe sufficient in some cases only by distance. Because of the size according to a safe distance, so that is
So as to satisfy the requirements of this standard, having a certain size limit worker can reach the danger zone.
Note 2. These safety distance of some injuries can not provide effective protection, such as radiation and matter emissions, the need to increase for such damage or take other protective
Measures.
Section on the lower limb of this standard involved in risk assessment in the upper limbs unforeseen danger not considered.
Aimed at a safe distance specified conditions (see 4.1.1) to prevent people touching the danger zone.
Note 3. This standard does not provide a way to prevent steps to climb to reach the danger zone.
2 Normative references
Terms of the following documents become provisions of this standard by reference in this standard. All the reference documents date, with its
After all of the amendments (excluding corrections) or revisions do not apply to this standard, however, encourage achieved according to standard
Whether the parties to the agreement to use the latest versions of these documents. For undated references, the latest edition of
To this standard.
GB/T 15706.1 Safety of machinery basic concepts general principles for design - Part 1. Basic terminology and methods (GB/T 15706.1-
2007, ISO 12100-1.2003, IDT)
3 Terms and Definitions
GB/T 15706.1 and given the following terms and definitions apply to this standard.
3.1
Safety devices (eg. guard, the blocking means), or other physical obstructions (such as. part of the machine), and to limit the human body
(Or) movement of certain parts of the human body in order to prevent it from touching danger zone.
3.2
Safety spacing safeseparationdistance
Ju r
Protective structure from the danger zone of minimum distance.
GB 23821-2009/ISO 13857.2008
4 to prevent the upper and lower limbs touching distance of safety
4.1 General
4.1.1 assume
This standard safe distance given by the following assumptions.
--- wherein the protective structure and the shape and location of the openings remains the same;
--- is a safe distance from the limiting surface of the body or of the relevant part of the measurement is started;
--- personnel may impose certain parts of the body beyond the protection structure or by opening trying to reach the danger zone;
--- datum plane people often standing, but not necessarily the ground (such as work platforms may be datum);
--- shoes when contacting with the reference plane have a (not including the use of high-heeled shoes, climbing or jumping);
--- can not help ancillary facilities (such as a chair or a ladder, etc.) change the reference plane;
--- not extend up to the upper extremity of the natural domain by means of auxiliary facilities (such as a stick or tools, etc.).
4.1.2 Risk Assessment
I...