Setyr worked example — RC-01 Thunderbolt — LSM Cabinet Service Not approved for use. Version 1 · 2026-09-04
Worked example only — your site must author, review and approve its own
procedure under 29 CFR 1910.147(c)(4). setyr.com/procedures
RC-01 Thunderbolt — LSM Cabinet Service
Amusement & attractions
Launch track LSM cabinet service. Includes transfer track isolation and capacitor bank discharge. ASTM F770 maintenance.
This is a worked example, not a procedure you can adopt. It describes equipment that does not exist, with illustrative tag numbers.
29 CFR 1910.147(c)(4) requires the employer to develop, document and
utilise energy control procedures specific to their own machines, and (c)(6)
requires the employer to inspect those procedures periodically. Neither duty
can be delegated to a vendor or discharged by this document.
Other standards apply to this work.
- NFPA 70E — arc flash. Working on an energised-capable LSM cabinet requires shock and arc-flash boundary assessment and appropriate PPE.
Isolation points
| # | Tag (illustrative) | Type | Disposition | What it does and why | Dwell |
|---|---|---|---|---|---|
| 10 | RC-01-XFER-DRIVE | Disconnect | Isolate & lock | Transfer track drive disconnect. Upstream block - isolate so no train can be moved into the work zone. | — |
| 20 | RC-01-TRAIN-CHOCK | Block | Apply & verify | Train chocks fitted at the station and any occupied block. GRAVITY - a train on grade will roll. | — |
| 30 | RC-01-ANTIROLL | Block | Apply & verify | Anti-rollback dogs engaged on the lift. Prevents lift chain runback under load. | — |
| 40 | RC-01-MAIN | Disconnect | Isolate & lock | Ride main disconnect, 480V at the MCC. Feeds lift, brakes, control system and station. | — |
| 50 | RC-01-LSM-PWR | Disconnect | Isolate & lock | LSM launch drive disconnect. Feeds the linear synchronous motor cabinets along the launch track. | — |
| 60 | RC-01-LSM-CAP | Bleed | Isolate & lock | LSM capacitor bank discharge point. STORED ELECTRICAL - banks hold lethal charge after the drive is isolated. | — |
| 70 | RC-01-CDA | Valve | Isolate & lock | Compressed air supply at the ride header. Feeds brakes, restraints and transfer track. | — |
| 80 | RC-01-CDA-BLEED | Bleed | Isolate & lock | Air header bleed downstream of the supply valve. Confirm zero on the gauge. | — |
| 90 | RC-01-BRAKE-AIR | Valve | Isolate & lock | Block brake air supply. Brakes are SPRING-APPLIED and air-released - removing air sets the brakes. | — |
| 100 | RC-01-HYD-REST | Valve | Isolate & lock | Restraint hydraulic supply. Holds lap bar locking pressure; bleed before working on a restraint. | — |
| 110 | RC-01-EVAC-LIGHT | Valve | KEEP ENERGISED | Evacuation walkway and catwalk lighting. Must REMAIN ENERGISED while anyone is on the structure. | — |
| 120 | RC-01-CTRL-PLC | Switch | Not an isolation device | Ride control PLC and E-stop circuit. Control circuitry only - NOT an energy isolating device. | — |
What your site must supply
- Your own asset and isolation-point tag numbers. The tags shown are illustrative and refer to equipment that does not exist.
- The actual location of every disconnect, valve and vent on your equipment.
- Measured stored-energy magnitudes and the dwell time required to dissipate them.
- Your verification method for each point, and who is authorised to perform it.
- Any additional energy sources present on your equipment and absent here.
Authorship and validation
This example was authored by Setyr for domain validation. It is not derived from any customer's controlled documents. It illustrates the elements 29 CFR 1910.147(c)(4)(ii) requires a procedure to contain — it does not certify compliance, which is a property of an employer's programme rather than of any document.