1. ISO12100-1, -2: 2003, Safety of machinery-Basic concepts, general principles for design-Part 1: Basic terminology, methodology-Part 2: Technical principles and specifications
2. IEC 60204-1: 2005, Safety of machinery-Electrical equipment of industrial machines, Part 1: General requirements (2005)
3. IEC 60947-5-8: 2006, Low-votage switchgear and controlgear – Part 5-8: Control circuit devices and switching elements – Three-position enabling switches (2006)
4. ANSI/RIA R15.06:1999, for Industrial Robots and Robot System-Safety Requirements
5. SEMI S2-0706–Environmental, Health, and Safety Guideline for Semiconductor Manufacturing Equipment