Page 350 - Drilling Technology in Nontechnical Language

Chapter 14 – SAFETY AND ENVIRONMENTAL ISSUES 341

Fig. 14–4. Man working high in the derrick (note the safety harness)

Safety notices and barriers alert rig personnel to particular hazards,
such as high-pressure lines.
Temporary barriers are erected to keep nonessential personnel away
from temporary hazards, such as high-pressure testing.

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