This part specifies the procedures and conditions to be followed for the validation by analysis and testing of
— the specified safety functions,
— the category achieved, and
— the performance level achieved
by the safety-related parts of a control system (SRP/CS) designed in accordance with GB/T 16855.1.
Note: Additional requirements for programmable electronic systems, including embedded software, are given in GB/T 16855.1-2008, 4.6, and GB/T 20438.
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 referenced document (including any amendments) applies.
GB/T 15706-2012 Safety of Machinery C General Principles for Design C Risk Assessment and Risk Reduction (ISO 12100:2010, IDT)
GB/T 16855.1-2008 Safety Of Machinery C Safety-Related Parts of Control Systems C Part 1: General Principles for Design (ISO 13849-1:2006, IDT)
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 15706-2012 and GB/T 16855.1-2008 apply.
4 Validation Process
4.1 Validation Principles
The purpose of the validation process is to confirm that the design of the SRP/CS supports the overall safety requirements specification for the machinery.
The validation shall demonstrate that each SRP/CS meets the requirements of GB/T 16855.1 and, in particular, the following:
a) the specified safety characteristics of the safety functions provided by that part, as set out in the design rationale;
b) the requirements of the specified performance level (see GB/T 16855.1-2008, 4.5):
1) the requirements of the specified category (see GB/T 16855.1-2008, 6.2),
2) the measures for control and avoidance of systematic failures (see GB/T 16855.1-2008, Appendix G),
GB/T 16855.2-2015 The following standards are cited：
