Machine Guarding

Machine Guarding

Machines, prime mover or transmission equipment having an exposed moving part that may endanger the safety of a worker must be equipped with and guarded by a safety guard or other device that prevents access to the moving part.

Ontario takes a very conservative approach when it comes to machine guarding safety. In the Occupational Health & Safety Act and Regulations, the underlying theme is: ‘If it can hurt a worker it must be guarded.’

Machine guarding safety audits are very important and definitely worth every penny spent! Where a PSR is required under Trigger #2 of the Table in S.7 Of Ontario Regulation 851, HITE Engineering is renowned for its detailed, practical reports.

We provide more than just a report – we provide a practical safeguarding solution.

HITE’s reports identify specific issues and detailed measures to achieve compliance.

Competitors too often provide generic reports that only recite the legislation without giving specific, practical solutions to the problems.

Our company has performed industrial safety reviews since 1997, while employing highly experienced engineers, allowing them to quickly understand the issues and cite multiple options that are practiced in the client’s specific industry. The results of this vast experience in machine guarding safety are materialized in the machine safeguarding solutions that we are offering to our clients. We understand the need for effective guarding that does not interfere with the operation of the machine. On the other hand, the cost of the upgrades might be a deciding factor in the economic feasibility of the project, and we will aim towards offering the least expensive solution. Customer satisfaction with the end product while ensuring employee safety is always our primary concern. In addition, HITE’s engineers take the time to educate our clients on the requirements of a Pre-Start Health and Safety Review and where applicable, we are able to demonstrate to the client that a review is not necessary under the legislation.

If you are looking for more than just a Pre-Start Health and Safety Review report, but rather a solution for your guarding needs then please call us for a complimentary consultation.

Design Of Custom Machine Guards

There are machine guarding safety situations where a conventional fence barrier guard is highly impractical. In the majority of these circumstances HITE can offer its customers a tailored guarding design that gives the desired access to the machine while complying with CSA Z432-04 for permissible gap sizes. This approach to machine safeguarding maintains the desired production efficiency and satisfies OHSA requirements.

Photogrammetry & LIDAR

Our standard practice in the main scope of work is to provide basic sketches for the machine guarding. However, when the guard design is complex and difficult to specify with markups on photos, HITE has a method of taking digital pictures, modeling the machine on 3D cad using specialized software, designing the guards in 3D and supplying fabrication drawings. This technique is known as photogrammetry.


In accordance with TSSA – Director’s Order 226-07-r1 section*2 “Addition of Machine Guarding” all elevator machines must be guarded in accordance with the requirements set out within the “Elevator Machine Room Equipment Guarding” guideline. These requirements are based on Occupational Health and Safety Act (OHSA) requirements and other supporting standards like the CSA Z432-04 Machine Guarding Standard.

In collaboration with TSSA approved elevator contractors, HITE Engineering is offering turn key integration services for elevator machine room equipment guarding. The guarding options include “Global” guarding solutions as well as individual component guarding. The installation includes the required Minor “B” change submissions to the TSSA and a letter from a professional engineer confirming that the installed guarding is in compliance with the respective regulations.

For example, after taking pictures of the area shown in “Figure A”, we were able to model that area in 3D and come up with the design of a form-fitting guard (on Solidworks) as shown in “Figure B”. The guard fit perfectly on the first try.

Turnkey Machine Integration Services

HITE Engineering Corporation has investigated well over a hundred workplace accidents and provided successful litigation support. This gives us unparalleled experience in identifying hazards and recommending effective and economical solutions. This raises the level of safety to meet or exceed current applicable standards. HITE Engineering conducts Pre Start Health and Safety Reviews on the same basis, with the objective of bringing your equipment into full safety compliance in a cost effective manner. Our Reports of Findings always include suggested solutions. With our experience in a wide variety of industries and our in-house design capability, we can resolve any machine guarding and safety issues while minimizing the effect on production. At the same time we can review any additional items such as upgrading your fluid power components, drives and electrical control systems. We can prepare a detailed specification for bidding with your choice of contractor, or have our team provide a turnkey solution.
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