N.H. Code Admin. R. Lab 1403.44
Portable Abrasive Wheel Machinery
Effective Nov 22, 2025#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 (formerly Lab 1403.58) New. #8796, eff 1-11-07; ss by #10809, eff 4-9-15 (from Lab 1403.41); ss by #14431, eff 11-22-25, EXPIRES: 11-22-35Commissioner, Department of Labor
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 requirement in (a) above:
- (1) Wheels used while within the work being ground; and
- (2) Mounted wheels, used in portable operations, 2 inches and smaller in diameter;
- (c) A safety guard shall cover the spindle end, nut, and flange projections. The safety guard shall be mounted so as to maintain proper alignment with the wheel; and
(d) Safety guards used on right angle head or vertical portable grinders shall:
- (1) Have a maximum exposure angle of 180 degrees; and
(2) Meet the following minimum requirements:
- a. The above guard shall be located to be between the operator and the wheel during use; and
- b. Adjustment of the guard shall be such that pieces of an accidentally broken wheel shall be deflected away from the operator.
Source. #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 (formerly Lab 1403.58) New. #8796, eff 1-11-07; ss by #10809, eff 4-9-15 (from Lab 1403.41); ss by #14431, eff 11-22-25, EXPIRES: 11-22-35