Le Lézard
Classified in: Transportation, Champlain Bridge

Unidentified risks led to the 2016 capsizing and sinking of tug near Montreal's new Champlain Bridge



GATINEAU, QC, Oct. 12, 2017 /CNW/ - In its investigation report (M16C0036) released today, the Transportation Safety Board of Canada (TSB) found that the capsizing and sinking of the Ocean Uannaq tug off Montreal, Quebec in 2016 was due to a lack of formalized operating procedures and inadequate assessment of the safety risks associated with complex marine operations.

On 1 April 2016, three tugs, including the Ocean Uannaq, were involved in repositioning an excavation barge on the St. Lawrence River as part of the new Champlain Bridge construction project. The Ocean Uannaq and another tug were assisting the Ocean Catatug 1, which was attached to the barge. In preparation for the move, the barge's upstream spuds, used for mooring, were raised before the downstream spuds. When one of the downstream spuds jammed as it was being raised, the barge and attached tug pivoted with the strong current around the jammed spud. The Catatug 1's port wire made contact with the Ocean Uannaq, which combined with the opposing current, created a hydrodynamic effect that led to the rapid capsizing of the tug. The two crew members managed to board the attached tug, and the Ocean Uannaq later sank at 1850. There were no injuries or pollution.

The investigation found that neither the tug's owner nor the operator had assessed the risks of the complex marine operations. Therefore, no operating procedures had been developed to guide masters in the best practices for directing operations, and masters were left to make ad hoc decisions. Safety management and oversight is a TSB Watchlist issue. The need for effective safety management has been demonstrated in a number of other occurrences.

Following the occurrence, the operator invited those involved in the occurrence, along with other key individuals from the construction site, the tug and barge owners, to conduct an internal accident investigation. Following that investigation, the existing shore side procedures were extended to the marine construction operations and the operator implemented procedures to help workers identify and mitigate risks on the work site. The operator also hired an assistant marine superintendent to specifically oversee the marine safety aspects of its operations.

See the investigation page for more information.

The TSB is an independent agency that investigates marine, pipeline, railway and aviation transportation occurrences. Its sole aim is the advancement of transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability.

The TSB is online at www.tsb.gc.ca. Keep up to date through RSS, Twitter (@TSBCanada), YouTube, Flickr and our blog.

 

SOURCE Transportation Safety Board of Canada


These press releases may also interest you

21 oct 2018
The Scheme aims to tackle modern slavery and a lack of compliance within the industry. It will target labour abuse and lack of adherence to regulations at hand car washes, whilst enabling consumers to identify a compliant car wash.   Operators who...

21 oct 2018
While negotiations continue, the Canadian Union of Postal Workers (CUPW) has decided to initiate strike action. CUPW has given notice that it intends to hold rotating strikes in Victoria, Edmonton, Windsor and Halifax beginning after 12:01 am on...

21 oct 2018
FARGO, N.D., Oct. 21, 2018 /PRNewswire-PRWeb/ -- Office Sign Company of Downtown Fargo, North Dakota offers a broad variety of signage. From the ceiling to the floor, they are continually expanding their capabilities. This month, they had the...

21 oct 2018
SALINAS, Calif., Oct. 21, 2018 /PRNewswire-PRWeb/ -- Salinas Toyota is educating the local community about the differences between the 2018 4Runner and the 2018 Highlander. Both vehicles are midsize SUVs offered in six trim levels and have similar...

21 oct 2018
LOUISVILLE, Ky., Oct. 21, 2018 /PRNewswire-PRWeb/ -- Startup Adder Mobile Technologies announced the new release of their mobile application on Friday, October 19 2018. The new version of the app includes a host of new functionalities and...

21 oct 2018
Cheapquotesautoinsurance.com has released a new blog post that explains how policyholders can keep car insurance costs low and save money. Policyholders should be aware that some price-determining factors are under their control. By adopting safe...




News published on 12 october 2017 at 10:00 and distributed by: