February 7, 2011 | Mark Paradies


OGP Safety Alert

Country: CANADA – North America

Incident Date: 16 December 2010

Type of Activity: Maintenance, Inspection, Testing

Type of Injury: Caught In, Under or Between

Function: Drilling

On December 16, 2010 a driller was conducting maintenance on a seismic track drill and had an engine side cover removed to access the motor. The engine side cover was placed outside the machine while repairs were completed. The driller finished repairs and had started the seismic track drill’s engine. The driller climbed outside and placed the engine side cover back inside the cab. The engine side cover came to rest against the two hydrostatic drive levers used to engage the left and right movement of the tracks. The unmanned seismic track drill moved forward rapidly pinning the driller between a parked pick-up truck and the seismic track drill. The driller was fatally injured.

What Went Wrong?

Through the investigation it was discovered that the seismic track drill was in the drive mode and not properly locked out in the park mode. The engine side cover had the two hydrostatic drive levers forced in the forward position.

Corrective Actions and Recommendations:

All equipment must be locked out from unintentional movement when not in care and control of the operator.

Equipment or Vehicles unit must be in park and shut off when completing any fuelling and/or maintenance operations.

During maintenance procedures for pre-start up, equipment and vehicles should be parked with extra clearance.

Consider installation of secondary safety features to lockout hydrostatic drive levers when the operator is not in the driver’s seat. This safety feature would provide an extra control to the park mode.


This Safety Alert is designed to prevent similar incidents by communicating the information at the earliest possible opportunity. Accordingly, the information may change over time. It may be necessary to obtain updates from the source before relying upon the accuracy of the information contained herein. This material is presented for information purposes only. Managers and supervisors should evaluate this information to determine if it can be applied to their own situations and practices.

Source Contact:

For more information on this event, please contact safety@enform.ca

This alert is being distributed via a partnership between the International Association of Oil and Gas Producers (http://www.ogp.org.uk/) and Enform (http://www.enform.ca/).

safety alert number: 228

OGP Safety Alerts http://info.ogp.org.uk/safety/


Whilst every effort has been made to ensure the accuracy of the information contained in this publication, neither the OGP nor any of its members past present or future warrants its accuracy or will, regardless of its or their negligence, assume liability for any foreseeable or unforeseeable use made thereof, which liability is hereby excluded. Consequently, such use is at the recipient’s own risk on the basis that any use by the recipient constitutes agreement to the terms of this disclaimer. The recipient is obliged to inform any subsequent recipient of such terms.
This document may provide guidance supplemental to the requirements of local legislation. Nothing herein, however, is intended to replace, amend, supersede or otherwise depart from such requirements. In the event of any conflict or contradiction between the provisions of this document and local legislation, applicable laws shall prevail.

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