Standard No.:	GB/T 31255-2014
English Name:	Safety of machinery―Safety specification for the design of industrial type stairs, working platforms and walkways
Chinese Name:	机械安全 工业楼梯、工作平台和通道的安全设计规范
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2014-12-05
Implemented on:	2015-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the safety specification for the design of industrial type stairs, working platforms and walkways. This standard is applicable to industrial type stairs, working platforms and walkways of fixed facilities entering into the machinery. This standard is also applicable to industrial type stairs, working platforms and walkways not fixed on the machine but may be required to be removed or moved aside (e.g. tools for changing large-size press) during operation. Other industrial type stairs, working platforms and walkways may be used by reference. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies. GB/T 15706-2012 Safety of Machinery - General Principles for Design - Risk Assessment and Risk Reduction GB 17888.1-2008 Safety of Machinery - Permanent Means of Access to Machinery - Part 1: Choice of a Fixed Means of Access between Two Levels GB 17888.2-2008 Safety of Machinery - Permanent Means of Access to Machinery - Part 2: Working Platforms and Walkways GB 17888.3-2008 Safety of Machinery - Permanent Means of Access to Machinery - Part 3: Stairs, Stepladders and Guard-Rails 3 Terms and Definitions

Foreword I Introduction II 1 Scope 2 Normative References 3 Terms and Definitions 4 General 5 Material 6 Stair 7 Working Platform and Walkway 8 Edge Protection 9 Protective Structure Bibliography