A ride is a machine with the public on it. Maintenance happens overnight, under time pressure, on drive systems — linear synchronous motors, hydraulic launches, lift chains — with enough stored energy to move a train.
Arc-flash risk in an LSM cabinet is real: NFPA 70E applies alongside 1910.147, and the boundary assessment has to be part of the procedure.
Restart is public. The morning check that every lock is off and every guard is back is a safety-critical event, and the record has to show it.
Electrical isolation is complete at the disconnect; the cabinet still has a live incoming feed and no boundary was set.
A hydraulic launch holds a charge after isolation. The procedure did not have a dwell.
Night crew's lock is on a cabinet the morning crew did not check. The ride starts.
Real isolation-point structure, illustrative tags, equipment that does not exist. Free to read and download. An example to learn from — not a document to adopt.
Launch track LSM cabinet service. Includes transfer track isolation and capacitor bank discharge. ASTM F770 maintenance.
- 12 isolation points
- 1 must stay energised
Also applies: NFPA 70E
Read the exampleThe arc-flash requirement is on the procedure as a named step with its own attestation, not a footnote.
The work order cannot close while any lock is on or any permit is open. Restart follows close.
What is still locked out, by whom, at a glance — before the gates open.
Plans are per site, per year, unlimited users — see pricing.