Portable Grinder Operating ProceduresPortable Grinder Operating Procedures. Using Portable Grinders Safely. Like all power tools, portable grinders can present safety concerns, including flying particles and electrical hazards. This procedure outlines requirements in the Occupational Safety & Health. Administration's (OSHA) standards regarding abrasive.procedural guidelines of grinder,Grinding Safety GuidelinesGrinding Safety Guidelines. 1. Special training is required before using the surface grinder. Ask shop staff to demonstrate proper use of this tool. 2. Abrasive wheel machinery shall not be operated without the appropriate guards in place. 3. Tool rests on bench or pedestal grinders shall be set no more than 1/16 inch from the.