October 28, 1987
MEMORANDUM FOR: JOHN B. MILES, JR.
THRU: LEO CAREY, Director
Office of Field Programs
FROM: THOMAS J. SHEPICH, Director
Directorate of Compliance Programs
SUBJECT: STD 1-11.2B Work Platforms suspended from
Lattice or Hydraulic Crane Booms
The adoption of National Consensus Standards by OSHA, as authorized under
the Occupational Safety and Health Act of 1970, resulted in many "gray areas"
which have required official clarifications and interpretations. This is now
accomplished by the use of OSHA instructions. Prior to the formulation of an
OSHA instruction, extensive research is done in the developing process. The
Offices of Standards Development, Compliance and the Solicitor must concur
prior to finalization of these instructions. This office interprets 29 CFR
1926.550(b)(2) to allow the use of suspended working platforms. Section
5-3.2.3e of ANSI B30.5-1968 states that "The operator shall not hoist, lower,
swing or travel while anyone is one the load, or hook." However, we and ANSI
have interpreted the above requirement as not prohibiting the use of crane
suspended working platforms under the conditions required in STD 1-11.2B. At
this time we are not aware of any enforcement problems with the subject
instruction which clarifies 29 CFR 1926.550(b)(2).