Plant and rolling stock modification is defined as any configuration change that impacts on the:

1. 1. Intended use or purpose of the plant or rolling stock when modified (such as an excavator being fitted with additional lifting hooks to lift slung loads)
   2. Method of operation (when different from normal)
   3. Operational capacity and limitations (including stability)
   4. Design certification and or the registration differs from the original design
   5. Maintenance requirements specified by Original Equipment Manufacturer (OEM) or supplier

To gain approval to operate modified plant at a John Holland workplace, a modification request must be raised using the Plant/Rolling Modification Management Form and submitted to the Project or Regional Plant Manager and/or Rail Plant Services Engineer.

The plant modification process will include the following:

No plant or rolling stock is to be modified without the written authorisation of the owner.

See the Plant Modification section of the Plant and Equipment Procedure (linked below) for more details