Possession — Down Main MP12.4 to MP15.8
Absolute possession of the Down Main for engineering work. PICOP-controlled. Includes 25kV OLE isolation and earthing.
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.
Other standards also apply to this work
- 49 CFR 214 subpart C — roadway worker protection. Possession is a rail-specific control that sits alongside, not instead of, energy isolation.
10 points, in sequence
Signal SN142 kept at danger with signal post replacement switch. Protects the up end of the possession.
Signal SN156 kept at danger. Protects the down end of the possession.
Points 214B clipped and locked in the normal position. Blocks the intermediate access route.
Detonator protection, three detonators on the up line at MP12.4. Placed by the Protection Officer.
Detonator protection, three detonators on the down line at MP15.8.
Possession limit marker at MP12.4 with Possession Protection Officer contact details.
Possession limit marker at MP15.8.
25kV OLE section DM-4 isolation at the feeder station. Switched out and locked by the Authorised Person.
OLE portable earths applied at both ends of section DM-4. Applied after proving dead, removed last.
Normal signalling within the possession. SUSPENDED - signals no longer protect; all movements are under PICOP control.
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.