N.H. Admin. Code § Lab 1403.03

Current through Register No. 50, December 12, 2024

Section Lab 1403.03 - Abrasive Grinding

The employer shall ensure compliance with the following requirements:

(a) Abrasive wheels shall be used only on machines provided with safety guards;

(b) The following shall be exempt from the safety guard requirements:

(1) Wheels used while within the material being ground; and

(2) Mounted wheels, used in portable operations, 2 inches and smaller in diameter;

(c) Abrasive wheel safety guards for bench and floor stands and for cylindrical grinders shall not expose the grinding wheel periphery for more than 65 degrees above the horizontal plane of the wheel spindle. The protecting member shall be adjustable for variations in wheel size so that the distance between the wheel periphery and adjustable tongue or end of the peripheral member at the top shall never exceed 1/4 inch;

(d) Abrasive wheel safety guards shall cover the spindle end, nut, and flange projections;

(e) An adjustable work rest of rigid construction shall be used to support the work on offhand grinding machines. Work rests shall be kept adjusted closely to the wheel with a maximum clearance of 1/8 inch;

(f) Machines designed for a fixed location shall be securely anchored to prevent movement, or designed in such a manner that in normal operation they shall not move; and

(g) All abrasive wheels shall be closely inspected and ring-tested before mounting to insure that they are free from defects.

N.H. Admin. Code § Lab 1403.03

#4118 eff 8-22-86, EXPIRED: 8-22-92

New. #6684, eff 2-4-98, EXPIRED: 2-4-06

New. #8606, INTERIM, eff 4-12-06, EXPIRED: 10-09-06

New. #8796, eff 1-11-07

Amended by Volume XXXV Number 18, Filed May 7, 2015 , Proposed by #10809, Effective 4/9/2015, Expires4/9/2015.