Safe Operating Procedures and Signal Communication
Safe Operating Procedures and Signal Communication
Safe operation requires clear communication between operator and signalperson. Standard hand signals (or radio) must be agreed before the lift. The operator must obey only the designated signalperson (except emergency stop, which anyone can give). Blind lifts require radio or special signals. Procedures include: plan the lift, check the load weight and rigging, ensure the load path is clear, use tag lines, and never lift over people. Slewing should be smooth; avoid shock loading.
Traps: assuming anyone can signal; forgetting that emergency stop can be given by anyone; and using non-standard signals. Another trap: traveling with a suspended load is prohibited unless specifically permitted and risk-assessed. Also, operator distractions (phones) are a major hazard.
Worked example / rule of thumb: Before lifting, the operator and signalperson agree on radio channel and hand signals. The operator repeats the signal or confirms. Rule: One signalperson, one channel; if communication is lost, stop until restored. Never move a load over personnel-use barriers.