OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

March 2, 1976

MEMORANDUM FOR: Harry S. Sachkar, Area Director

SUBJECT: Automatic Rail Clamps, Cranes

This is in reply to your memorandum dated February 23, 1976 on the subject title.

We have contacted the B30.2 [committee] of ANSI and were advised by Mr. R.W. Adams, member of the B30.2 committee, that the intent of section 2-1.3.1c was to require automatic rail clamps in outdoor ore storage bridge cranes. These are gantry type cranes having spans over 100 ft.

This indicates that 29 CFR 1910.179(b)(4) applies only to outdoor storage bridge gantry type cranes having spans approximately 100 ft. or more in length.

DAVID H. RHONE
Regional Administrator for
Occupational Safety and Health