Safety issue
| Safety issue description |
The trailing bogie of wagon RCPF31882C was found to have loose and broken wedge wear plates. It could not be verified whether the wedge wear plates had broken free before or during the derailment sequence. However, if the condition had existed prior to the derailment, it is likely that body roll induced while traversing a series of track irregularities could result in undamped harmonic oscillations. |
|---|---|
| Issue number | RO-2008-009-SI-02 |
| Issue owner | Pacific National |
| Date issue released | 21/12/2009 |
Safety action
| Action type | Safety recommendation |
|---|---|
| Action number | RO-2008-009-SR-030 |
| Organisation | Pacific National |
| Action description |
The trailing bogie of wagon RCPF-31882C was found to have loose and broken wedge wear plates. While it could not be verified whether the wedge wear plates had broken free before the derailment or during the derailment sequence, if the condition had existed prior to the derailment, it is likely that body roll induced while traversing a series of track irregularities could result in un-damped harmonic oscillations. The ATSB recommends that the Pacific National Pty Ltd should address this safety issue. |
| Action status | Closed - Action Taken |
Organisation response
| Date received | 14/05/2010 |
|---|---|
| Organisation | Pacific National |
| Response text |
PNL has train examination procedures in place for these items. It is also included in the new version of the Pacific National Wagon Pocket Field Manual. |
| ATSB response |
The ATSB is satisfied that the intended action by PNL would adequately address the safety issue. |