California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 6 - Power Transmission Equipment, Prime Movers, Machines and Machine Parts › Article 37 - Purpose, Definitions and Standards › Section 3944 - Guard Clearances

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Where a guard or enclosure is within 2
						inches of moving parts, openings through the guard shall be of such size as
						will preclude the passage of any object one-half inch in diameter.
(b) Where a guard or enclosure is within 4
						inches of moving parts, openings through the guard shall be of such size as
						will preclude the passage of any object greater than one-half inch in
						diameter.
(c) Where a guard is
						located between 4 inches and 15 inches from moving parts, the maximum opening
						shall be of such size as will preclude the passage of any object greater than 2
						inches in diameter. Where a slatted guard is used, the width of the opening
						shall be not greater than 1-inch.
(d) Standard railing guards shall be placed
						not less than 15 inches nor more than 20 inches from any moving parts provided;
						however, that where clearances from other moving parts are less than 15 inches,
						such parts shall be guarded as required elsewhere in these orders.
(e) The use of nylon mesh or materials of
						equivalent strength with holes not exceeding ½ -inch to modify an
						existing substandard fan guard is acceptable, provided the combination of the
						two provides adequate protection and the mesh cannot be pushed into the danger
						zone during normal use.
1.
						  Repealer of Table G-2 and Figure G-8, and renumbering of Table G-3 to Table
						  G-2, filed 11-18-76; effective thirtieth day thereafter (Register 76, No. 47).
						  For prior history, see Register 76, No. 6.
2. Amendment of Section
						  3944 and repealer of Tables G-1 and
						  G-2, Figures G-1, G-2, G-3, G-4, G-5, G-6, G-7 and new Tables G-1 and G-2,
						  Figures G-1, G-2, G-3, G-4, G-5, G-6, G-7 filed 5-4-77 as an emergency;
						  effective upon filing. Certificate of Compliance as to Table G-1 included
						  (Register 77, No. 19).
3. Editorial correction in Figure G-1 and
						  Certificate of Compliance as to 5-4-77 filing filed 8-31-77 (Register 77, No.
						  36).
4. Repealer of Table G-2 filed 12-19-78; effective thirtieth
						  day thereafter (Register 79, No. 1).
5. Amendment of Section
						  3944 and Tables G-1, G-2 and Figure
						  G-7 filed 10-9-85; effective thirtieth day thereafter (Register 85, No.
						  44)
6. Editorial correction of Figure G-2 and deletion of duplicate
						  NOTE and HISTORY NOTES (Register 95, No. 24).
7. Change without
						  regulatory effect providing more legible illustrations for Figures G-1 through
						  G-7 filed 2-18-2009 pursuant to section
						  100, title 1, California Code of
						  Regulations (Register 2009, No. 8).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.