N.H. Code Admin. R. Lab 1403.36
Machine Guarding
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 1403.49) New. #8796, eff 1-11-07; ss by #10809, eff 4-9-15 (from Lab 1403.33); ss by #14431, eff 11-22-25, EXPIRES: 11-22-35Commissioner, Department of Labor
The employer shall ensure compliance with the following requirements:
- (a) Machine guarding shall be provided to protect employees from hazards such as those created by point of operation, nip points, rotating parts, flying chips, and sparks;
(b) Machine guarding shall comply with the following requirements:
- (1) The guard shall be such that it cannot pose an accident hazard in itself; and
- (2) Point of operation guarding devices shall be so designed as to prevent the operator from having any part of the operator’s body in the danger zone during the operating cycle;
(c) Machines which require point of operation guarding shall include:
- (1) Guillotine cutters;
- (2) Shears;
- (3) Alligator shears;
- (4) Power presses;
- (5) Milling machines;
- (6) Power saws;
- (7) Jointers; and
- (8) Forming rolls and calendars;
- (d) Special supplemental hand tools shall be used for placing and removing materials within the danger zone of the machine;
(e) Except as allowed by (i) below, guards shall be required within 7 feet of the floor or working platform to protect from the following machinery:
- (1) Fan blades;
- (2) Belts;
- (3) Pulleys;
- (4) Sprockets;
- (5) Chains;
- (6) Flywheels;
- (7) Shafting;
- (8) Shaft projections;
- (9) Gears;
- (10) Couplings; and
- (11) Rotating or reciprocating parts;
- (f) Flywheels protruding through a working floor shall be guarded;
- (g) Where both runs of horizontal belts are 7 feet or less from the floor or working surface, the guard shall extend at least 15 inches above the belt;
- (h) Safety sleeves shall be required to guard couplings with bolts, nuts, or set screws extending beyond the flange; and
(i) Belts, pulleys, and shafting located in rooms used exclusively for power transmission apparatus shall not be required to be guarded when the following requirements have been met:
- (1) The basement, tower, or room occupied by transmission equipment is locked against unauthorized entrance; or
- (2) The route followed by the oiler is protected in such a manner as to prevent accidents.
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 1403.49) New. #8796, eff 1-11-07; ss by #10809, eff 4-9-15 (from Lab 1403.33); ss by #14431, eff 11-22-25, EXPIRES: 11-22-35