Lake Milo Dam
- Mitchelmore Engineering Co. Ltd.

» Scope of Project

Meco was retained by Nova Scotia Power Inc. (NSPI) using a Qualifications Based Selection (QBS) process to provide advisory and design services in assessing below the hook lifting devices at various plants throughout Nova Scotia.  Work involves developing a record of drawings, testing, and inspections for all lifting equipment use for the seventeen (17) hydro systems operated and owned by NSPI. 

» Execution

The initial exercise is to develop an inventory of all lifting devices at a particular plant and catalogue the type and purpose of the lifting device, assign an inventory number and identify applicable codes.  Once all lifting devices are identified and numbered, a risk assessment was completed for all non-OEM (Original Equipment Manufacturer) devices.  The risk assessment included a calculation check, inspection (using NDE testing as necessary) and development of a load rating for the device.  For complex hooks, finite element models are used to determine the load rating.  OEM lifting devices are checked against the available load rating and the deployed purpose if verified to be correct with the intended purpose.  Finally, an inspection may be completed to determine if the lifting device has deteriorated from original condition and whether use is still appropriate.

» Project Highlights

In industry, there is a plethora of lifting devices used for day-to-day operations. Some get taken for granted and operations become mundane, with safety assumed. When a lifting device fails, the result can be catastrophic and increase risk to life safety.  This project uses a quality assurance and quality control (QA/QC) methodology in conjunction with risk assessment (RA) techniques to ensure that NSPI devices and catalogues and meet current codes.  

As a result of the project, NSPI management and workers have identified lifting devices that are deficient and can either modify or replace hem ensuring the safety of the NSPI personnel that operate equipment in their plants, thereby making the workplace safer.

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