RC-14 Robot Weld Cell - Weld Tip Change Isolation
Full energy isolation of RC-14 for weld gun tip change and reamer service. Entry into the cell.
It refers to equipment that does not exist and illustrates the elements 29 CFR 1910.147(c)(4)(ii) requires a procedure to contain. It is not a document to adopt. Under (c)(4)(i) the employer must develop and document energy control procedures specific to their own machines, and under (c)(6) must inspect them at least annually.
11 points, in sequence
Cell main 480V disconnect at the control panel. De-energises robot controller, weld supply and positioner.
Spot weld power supply disconnect, 230V. Separate from the cell main.
2-axis positioner drive disconnect. Positioner can rotate under load if energised.
Servo drive DC bus discharge point. STORED ELECTRICAL - capacitors hold charge; allow discharge dwell before access.
Compressed dry air supply to the cell at the FRL. 90 psi to grippers, clamps and tool changer.
CDA bleed downstream of the FRL. Relieves cell header. Confirm zero on the gauge.
End-effector gripper actuator bleed. TRAPPED AIR remains at the actuator after header isolation.
Weld gun cooling water supply valve. Isolate after the gun has cooled.
J2/J3 axis mechanical support stand. GRAVITY LOAD - arm drops when brakes release. Fit before any brake work.
Weld fume extraction. Must REMAIN RUNNING while anyone is in the cell. Do not isolate.
Interlocked access gate. NOT an energy isolating device - control circuitry only. Must not be relied on.
What your site must supply
This example is structurally complete and factually generic. The things below are the things only you can know — and they are exactly what makes a procedure yours.
- 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.
Author this properly, once
Setyr holds procedures like this as living documents — bound to real isolation points, with lock registries, group lockout, person-in-charge custody and periodic review built in.