anti collision devices crane

Anti-Collision Tower Crane Devices: WorkSafeBC 2023 Updates

Anti collision devices are more important than ever. Statistical data has shown that unwanted contacts – between two cranes, tower cranes and power lines- are the second most common type of severe tower-crane incidents. Slew-limiting technologies have advanced over the last 20 years and sensors, interfaces, and the software used to analyze the data have become very reliable – improving safe and efficient operations. An example of such technologies is the newly mandated tower crane anti-collision system.  

A tower crane anti-collision system is installed to help operators anticipate the risk of contact between the moving parts of a tower crane and other tower cranes and structures. The anti-collision system is composed of various sensors which measure each tower crane’s moving parts, position, velocity, and angle. If a collision becomes imminent, the system can send a command to the crane’s control system–via a radio link, ordering it to slow down or stop. The operator is prevented from moving the crane toward any hazard and can only move it away.

Anti-collision systems allow prohibited zones to be defined, called zoning. These include schools, transport links, electrical power lines, and beyond the site boundary, where the crane is not allowed to operate. By taking this approach the construction industry will feel more confident and will be able to avoid costly and fatal incidents. The benefits of these systems make it worthwhile for the industry to explore retrofitting older equipment wherever possible.   

WorkSafeBC has revised Guideline 19.24.1, which describes the minimum approach distance to electrical conductors. If employers use a zone-limiting device to prevent dangerous contacts, they will be exempted from providing written assurance of certain safeguards in place.

With these benefits, consultation, changes in guidelines, and public hearings, WorkSafeBC decided to amend the Occupational Health and Safety Regulations, which will be enacted in March 2023. The following revisions are made:  

OHSR 19.24.1(2) – If practicable, an employer must ensure that a tower crane operating at a workplace that has exposed electrical equipment or conductors is equipped with a zone-limiting device that prevents the crane from operating in the relevant minimum approach distance 

OHSR 14.84.1 –  (2)(c.1) if practicable, each crane must be equipped with and operated under the control of a zone-limiting device with anti-collision control 

OHSR 14.15 – (2) If a modification that affects the rated capacity or safe operation of a crane or hoist is made to its structure, to one of its mechanical components or to its control system, the crane or hoist must 

(a) be assessed, 

(b) have its rated capacity adjusted as necessary, and 

(c) be certified as safe for use. 

See WorkSafeBC for more details. Learn more about Crane Health and Safety.

For any further questions contact us!


Tower/Self-Erect Crane Pre-Assembly Checklist Pilot Project **Revised 03-11-2022

The assembly and dismantling of Tower cranes is a complex task that addresses multiple risks. Components are delivered on commercial vehicle flat decks and are lifted into place with a mobile crane, supported by rigging equipment and a crew of assembly personnel. These operations are typically conducted in tight quarters, and often under extreme time pressure as dictated by the necessary street closure restrictions.

Crane-related owners, assembly/disassembly service providers and related organizations like BC Crane Safety (BCACS) and the International Union of Operating Engineers (IUOE) have taken an active role in working with WorkSafeBC and the City of Vancouver to propose changes to the assembly/disassembly process to make streets safer for construction crews, motorists, cyclists, pedestrians and the public at large.

BC Crane Safety, in collaboration with WorkSafeBC and the City of Vancouver are proud to announce the implementation of the Tower/Self-Erect Crane Pre-Assembly Checklist Pilot Project.

See this bulletin for details and FAQ.

Visit our Next Practices page or download the Revised as of November 3, 2022 – Tower/Self-Erect Crane Pre-Assembly Checklist here.

National Day of Truth and Reconciliation 2022

3 construction workers on top of a building being constructed with a crane in the background at sunset.

2021 Annual Report Available

BC Crane Safety’s 2021 Annual Report is now available. Please visit our Year-end Reports page for more info.


High Resolution 2021 Annual Report or

Low Resolution 2021 Annual Report

Letter from the Executive Director

2021 will no doubt be a year to remember. Despite the challenges brought on by the pandemic and extreme weather events, our industry had one of the busiest years on record. The construction industry was deemed an essential service in 2020 and displayed incredible safety leadership with COVID-19 protocols keeping workers and the public safe. Except for tourism/hospitality and film production, almost every other sector we serve was working beyond capacity.

As we start to return to pre-pandemic routines, employers face new challenges. What began as a skilled labour shortage due to an aging and retiring workforce, has turned into a labour shortage across all industry sectors. Recruitment, retention, and training capacity have become key areas of focus. With our competency-based certification program, BC Crane Safety is well positioned to attract new entrants into the industry. We provide clear paths for apprentices, challengers, operators from other provinces, and operators from some other countries with credentials that meet globally recognized standards.

This year, we welcomed some new team members, including Nicole Santos (Certification Analyst) and George Louie (Accounting Supervisor). We ended the year by relocating our office to the Fraser Valley to be closer to our stakeholder community. 2022 will be a busy year as we forge ahead with ISO 17024 accreditation, prepare to launch a new website, and develop more and more resources to support our stakeholders. We continue to work with industry, WorkSafeBC, and training providers to further improve safety and compliance in all crane operations.

I’d like to acknowledge the hard work of our staff, Directors, and our various partners in making 2021 a success. Thank you. I look forward to all the good work ahead!

Clinton Connell

Tower crane at airport bc crane safe

Tower Crane Assembly Near an Airport

Effective planning, communication, and procedures can keep workers safe when erecting tower cranes:

Each airport has AZRs (Airport Zoning Regulations). There are Canada-wide standards, but some airports have their own AZR restrictions.

If you are working above an airport’s AZRs allowable tip heights, you will require an Aeronautical Assessment (Performed by Transport Canada) to be completed along with a NAV CAN permit. This process can take up to 90 days to obtain both permits.

Transport Canada Requires an Aeronautical Assessment

For the Aeronautical Assessment, Transport Canada will require:

• Site logistics plan with all the crane heights and elevations listed for each step.
• Profile view of the crane with respect to the OLS and the variance between the two.

The Aeronautical form can be found at:


Forward the completed Aeronautical Assessment Form to Transport Canada’s Civil Aviation department:

Transport Canada
Suite 620, 800 Burrard St.
Vancouver, British Columbia V6Z 2J8

If you wish additional information, check Transport Canada’s site: lighting-obstacles-air-navigation

The best approach for any work within 6km radius of an airport is to call the nearby airport and ask for a copy of their AZR. If you are compliant, reach out to NAV Canada for permission and to have a NOTAM issued. If you will exceed allowable tip heights reach out to both NAV CAN and Transport Canada.

NAV CAN can be reached through their customer-stakeholder services contact info:

• Email
• Telephone 1-613-563-5588
• Toll Free Telephone (North America) 1-800-876-4693
• TTY Line (Hearing Impaired)711 / 1-866-662-6478
• Toll Free Fax Line 1-877-663-6656
• Local Fax Line 1-613-563-3426


If you have any questions, please contact BC Crane Safety at or 604-336-4699. We’re here to help.

3M Logo

Stop Use and Inspection Notice: 3M Self Retracting Lifeline

3M issued a notice for specific versions of the 3M™ DBI-SALA® Nano-Lok™ Self Retracting Lifeline with Anchor Hook. 3M Fall Protection has identified a very low potential for the DBI-SALA® Nano-Lok™ Self Retracting Lifeline with Anchor Hook to be assembled with an unformed top swivel eye rivet. An improperly formed rivet may become displaced from the top swivel eye. An unformed rivet may result in the SRL becoming detached from the anchor hook, which could result in severe injury or death.

Click here for the full stop use notice.

tower crane

Top climbing a tower crane: Ensuring safe assembly and dismantling

WorkSafeBC Bulletin

BC Association for Crane Safety is reaching out to all stakeholders who participate in the assembly and disassembly of tower cranes in our province. As the next phase in the ongoing Tower Crane Safety Initiative, we are developing a Tower Crane community of practice group to discuss next steps moving forward. Based on initial conversations with the various stakeholder groups as the result of the Kelowna incident, four distinct recommendations have so far been tabled for future discussion and possible use:

  1. Certification – establish minimum qualification standards for the assembly/disassembly community
  2. Assembly/Disassembly Community Registry (BCACS)
  3. Formalized Reference-checking procedure (BC Formwork Association)
  4. Expansion to the NOP (Notice of Project) procedure (WSBC)

The crane sector prides itself on its proactiveness, its professionalism, and levels of engagement with the OH&S regulator. Our aim is to help flesh out an industry-driven change that meaningfully addresses the concern and presents a workable solution, without waiting for the long process of multiple investigations, inquiries, and litigation to conclude. BC Crane Safety asks for anyone interested in participating in this working-group or are able to provide SMEs (subject matter expert) contact us to be included so we can begin planning the initial discussion. Please forward your contact info and details of industry experience to: