Catwalk (Derrick Walk or Mast Walk)

A walkway extending from the derrick and/or mast to a point beyond the outer end of the drill pipe and casing storage rack at a well, the purpose of which is to facilitate the handling of such pipe between the rack and the derrick and/or mast.

Source: Petroleum Safety Orders–Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations


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