Machine Guarding – IndMacDig | Industrial Machinery Digest https://industrialmachinerydigest.com The Industry's Most Extensive Industiral Digest Wed, 20 Aug 2025 17:09:24 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.1 https://industrialmachinerydigest.com/wp-content/uploads/2017/05/newIMDWeb-100x100.png Machine Guarding – IndMacDig | Industrial Machinery Digest https://industrialmachinerydigest.com 32 32 At FABTECH, Wintriss to Debut New Clutch/ Brake Press Control and Shadow Light Curtain Update https://industrialmachinerydigest.com/safety-maintenance/machine-guarding/at-fabtech-wintriss-to-debut-new-clutch-brake-press-control-and-shadow-light-curtain-update-2/ Wed, 20 Aug 2025 17:09:24 +0000 https://industrialmachinerydigest.com/?p=139337
Wintriss Controls Group has announced it will be releasing the new WPC APEX Clutch/Brake Control and introducing the Shadow® 10 Light Curtain, the latest update to its industry leading presence sensing safety devices for presses, at FABTECH Booth #D41120 located at McCormick Place in Chicago IL from September 8-11, 2025.

Wintriss will also be emphasizing easier ways for fabricators and metal formers to leverage the powerful benefits of its ShopFloorConnect® Data Collection Software via flexible and affordable subscription packages.

At the booth, Wintriss will be demonstrating the new WPC APEX Clutch/ Brake Control for mechanical power presses. The WPC APEX is a full featured control with an easy-to-use touch screen display, tool number memory, and four dedicated die protection inputs. The WPC APEX also features detailed self-diagnostics and has inputs for up to four operator stations and up to four Shadow Light Curtains. The WPC APEX features many additional interlocks including cross-checked pairs and stroke mode specific types, as well as five individual I-stop and E-stop button inputs.

WintrissThe new Shadow 10 Light Curtain will also be displayed. The Shadow Light Curtain Series has been a proven safety solution in the industry, withstanding the rigors of pressrooms for nearly 50 years. Its rugged design with an IP65 rated housing to protect from harsh ambient stamping environments and reliable operation are well-reputed among metal forming professionals. The CSA-certified Shadow 10 control box has inputs for up to 4 transmitter/ receiver pairs. A control box is not necessary if the Shadow 10 is connected to the Wintriss WPC family of controls. Shadow 10 is designed with high levels of redundancy and fault tolerance, meeting the highest safety standards (Category 4) to ensure reliable protection. Shadow 10 has diagnostics LEDs, comprehensive yet easy-to-use blanking, and many other reliability features specifically designed for metal stamping applications.

Wintriss will also demonstrate at FABTECH its ShopFloorConnect Production Tracking Software which focuses on machine efficiency and OEE. Unlike other subscription-based data collection software, ShopFloorConnect is an on-premises solution where you own your data as soon as you collect it, forever. Customers can choose several levels of affordable subscription packages. The software is also offered in a perpetual licensing model.
There are also multiple hardware interface options for any ShopFloorConnect setup including the SmartPAC family of press automation controls, the ShopFloorConnect Machine Interface (SMI 2), and the newly introduced and affordable Tracker Device for collecting production data from virtually any machine.

In addition to Wintriss’s booth presence at the show, Industry Die Protection expert Jim Finnerty of Wintriss will be presenting “50 Tips for Better Die Protection”, Conference Session S09 – from 1:30 p.m.to 2:30 p.m., on Tuesday, September 9th. Jim created the Wintriss Die Protection Clinic, industry’s premier source for die protection and in-die sensing information and training, which he has led for over 25 years. Jim will also be available for consultation in the Wintriss booth before and after the presentation.

For more information on Wintriss at FABTECH, visit: FABTECH 2025.

About Wintriss Controls Group

Wintriss Controls Group, of Acton, Mass., is a leading manufacturer of automation and safety products for the metal stamping and forming industry including its SmartPAC PRO press automation controller. The company’s product range includes automation and clutch/brake controllers, custom consoles, safety light curtains, die protection systems, load analyzers, in-die quality control systems, and ShopFloorConnect® production reporting and OEE tracking software. Wintriss Controls Group is located at 100 Discovery Way, Unit 110, Acton MA 01720, phone (800) 586-8324, Fax: (978) 263-2048.

For more information, visit Wintriss at www.wintriss.com.

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SpaceGuard Products Highlights the RageWire®: Setting a New Standard for Industrial Wire Mesh Guarding in Manufacturing Facilities  https://industrialmachinerydigest.com/safety-maintenance/machine-guarding/spaceguard-products-highlights-the-ragewire-setting-a-new-standard-for-industrial-wire-mesh-guarding-in-manufacturing-facilities/ Mon, 21 Jul 2025 14:05:51 +0000 https://industrialmachinerydigest.com/?p=139052 SpaceGuard Products, a North American leader in wire mesh security solutions and protective guarding systems, is proud to highlight the RageWire® Automation & Robotic Guarding, the next-generation wire mesh guarding system designed for machine and robotic guarding. Engineered to deliver exceptional strength, adaptability, and protection in a wide range of industrial environments, RageWire® provides a robust solution that safeguards equipment and personnel in manufacturing facilities.

RageWire® stands out for its frameless construction, utilizing high-tensile steel wire that provides outstanding impact resistance and structural integrity across manufacturing facilities. This ensures the system’s durability, even under the harshest conditions. Its modular design enables rapid configuration and expansion, allowing facilities to adapt the system to their unique layouts and operational requirements. As requirements shift, panels can be easily reconfigured or relocated using the Quick Panel Lift-Out system, enabling fast panel removal and reinstallation for machine access. Hinged and sliding doors are also available to accommodate specialized applications and streamline entry.

Designed for safety, RageWire® creates secure barriers that protect equipment and personnel from hazardous machinery and prevent unauthorized access to sensitive areas, while maintaining clear visibility for effective workflow monitoring. RageWire® is built with a five-component system which simplifies building and reduces installation time. Saddle pocket brackets provide a quick panel lift-out system for machine access and fast panel reengagement.

RageWire® is available in a variety of standard sizes and can be customized to meet specific facility requirements. Pivot posts allow for 160-degree rotation, simplifying corner installations and enhancing layout flexibility. Optional accessories, such as locking hardware, access doors, custom colors, and Fortress Interlocks are available to offer additional security and functionality. The 4-inch sweep space facilitates easy cleaning access beneath panels. Each panel is finished with a durable powder coat, providing long-lasting protection against corrosion and wear. RageWire® is engineered to meet or exceed OSHA, ANSI/RIA, and other relevant safety standards, ensuring compliance with every installation.

RageWire® redefines what facilities can expect from wire mesh guarding by combining uncompromising strength, modular adaptability, and streamlined installation. Its advanced design not only protects valuable assets and personnel, but also supports evolving operational needs and enhances overall workplace efficiency. Backed by SpaceGuard’s industry-leading support and Quick-Ship delivery, RageWire® is the ideal solution for manufacturing facilities seeking a dependable, adaptable, and cost-effective protective system.

About SpaceGuard Products

SpaceGuard Products, headquartered in Seymour, Indiana, is a North American leader in wire mesh security solutions and protective guarding systems. With decades of engineering excellence and a legacy of innovation, SpaceGuard delivers industry-leading wire partitions, area guarding solutions, rack repair kits, and rapid Quick-Ship delivery to customers across a wide range of sectors. Supported by a robust dealer network and a commitment to quality, safety, and continuous improvement, SpaceGuard’s trusted brands including Centurion™, RageWire®, BeastWire®, and FordLogan set the standard for protecting people, property, equipment, and information in demanding industrial and commercial environments.

For more information on SpaceGuard Products, visit www.spaceguardproducts.com.

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Magnasafe from NORSTAT: Magnetic Safety Switches https://industrialmachinerydigest.com/safety-maintenance/magnasafe-from-norstat-magnetic-safety-switches/ Mon, 03 Mar 2025 18:05:36 +0000 https://industrialmachinerydigest.com/?p=119403 The Magnasafe range, from NORSTAT, are reed & magnet operated safety switches that are easy to install and maintain. Magnasafe switches are suitable for machine guarding applications where guard locking is not required. They are fully encapsulated non-contact switches ideal for long term for use in harsh / wet environments and are available in a wide variety of sizes and contact configurations making them ideal for use in food processing, filling and packing as well as many other non-locking machine guard applications.

Magnasafe switches utilize robust ABS or 316 grade Stainless Steel housing and are available in a large range of sizes and cable connection options including M12 quick disconnect. These switches are very tolerant to misalignment, have a protection rating of IP67 & IP69K as well as high temperature options available. Contact Norstat for additional information, pricing, and availability.

About Norstat

Since The early 1960’s, Norstat has been servicing the industrial automation marketplace by offering safety, automation and connectivity solutions to the machine, process control, robotic, and automation industries with a complete line of safety, control, automation and connectivity products. Our trained engineering staff at our Rockaway, NJ headquarters as well as our numerous representatives out in the field can offer expert solutions for all of your safety, automation, and connectivity requirements.

Our SAFETY program includes Safety Light Curtains, Muting Light Curtains & Safety Controllers, Safety Interlock switches, Non-Contact Safety Switches, Safety Relays as well as Optical and Audible Signaling Devices. Our AUTOMATION program consists of Sensors for Pressure, Vacuum, and Positioning, Photoelectric & Ultrasonic Sensors, Foot Switches, Limit Switches both IEC body and Miniature types for axis control as well as a full line of Push Buttons, Panel Mount Switches, Buzzers and Emergency Stop Switches. Our CONNECTIVITY program features DIN Connectors for Sensors and Solenoid Valves, M8/M12 Connectors for Sensors and Switches, Passive & Smart Distribution Boxes, Automotive Connectors ( D-Type ) as well as a full range of special connection solutions that can be custom designed to fit most any application. This complete program enables our customers to conform to both the domestic and international machine safety and compliance standards along with the knowledge that Norstat supports their products with a friendly and experienced customer service team.

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Enhancing Workplace Safety Through Machine Guarding https://industrialmachinerydigest.com/events/enhancing-workplace-safety-through-machine-guarding/ Wed, 01 Jan 2025 18:10:31 +0000 https://industrialmachinerydigest.com/?p=96357 In today’s fast-paced industrial landscape, safety remains a critical priority for manufacturers and businesses. Machine guarding—physical barriers and safety devices designed to prevent accidental contact with moving parts—stands as a cornerstone of workplace safety. Its implementation not only ensures compliance with safety regulations but also significantly reduces workplace injuries and downtime, driving productivity and fostering a culture of safety.

The Importance of Machine Guarding

Machine guarding is essential in environments where heavy machinery, high-speed equipment, and hazardous tools are used. According to the Occupational Safety and Health Administration (OSHA), machine-related injuries account for a substantial percentage of workplace accidents. Common incidents include entanglement, crushing, cutting, and even fatal injuries caused by moving parts.

Effective machine guarding mitigates these risks by providing a physical barrier between workers and hazardous components such as blades, gears, and belts. It also prevents debris and materials from being ejected during operation, protecting nearby personnel. Beyond physical safety, well-maintained guarding reduces liability and demonstrates a company’s commitment to employee welfare.

Types of Machine Guards

There are several types of machine guards, each tailored to specific applications and equipment:

  • Fixed Guards: Permanent barriers that provide robust protection against moving parts. Commonly used on conveyors, gears, and cutting tools, these guards are simple, reliable, and cost-effective.
  • Interlocked Guards: Equipped with sensors that shut down machinery when the guard is removed or tampered with. This ensures that workers cannot access hazardous areas during operation.
  • Adjustable Guards: Flexible solutions designed for machines that require frequent adjustments. These guards can be repositioned to accommodate various tasks without compromising safety.
  • Self-Adjusting Guards: Often found on woodworking equipment, these guards adjust automatically based on the size of the material being processed, maintaining a consistent barrier.

Machine Guarding Standards and Compliance

Compliance with safety standards is not optional; it’s a legal requirement. OSHA outlines specific regulations for machine guarding under standard 1910.212, which mandates that moving parts must be shielded to prevent injury. Additional guidelines from organizations such as the American National Standards Institute (ANSI) and the International Organization for Standardization (ISO) provide detailed specifications for guard design and implementation.

Failing to meet these standards can result in significant penalties and, more critically, endanger the lives of workers. Regular audits, inspections, and employee training are essential to ensure compliance and maintain a safe working environment.

Innovations in Machine Guarding

The evolution of technology has introduced innovative solutions in machine guarding, enhancing both functionality and usability. Modern guards now integrate advanced materials, ergonomic designs, and automation for improved efficiency and worker convenience.

  • Smart Guarding Systems: Equipped with sensors and IoT capabilities, these systems monitor machinery in real time, providing alerts for potential hazards and maintenance needs.
  • Transparent Guards: Made from durable, shatter-resistant materials like polycarbonate, these guards allow operators to visually monitor machine operations without compromising safety.
  • Ergonomic Designs: Guards are increasingly designed with user comfort in mind, reducing physical strain during operation and maintenance.

Benefits Beyond Safety

While the primary purpose of machine guarding is to protect workers, its benefits extend far beyond safety. By minimizing accidents and downtime, guarding systems contribute to increased productivity and cost savings. Efficiently guarded machines experience less wear and tear, reducing maintenance needs and extending equipment lifespan.

Moreover, a strong safety record enhances a company’s reputation, attracting skilled workers and fostering trust among clients and stakeholders. Investing in high-quality guarding systems is not just a regulatory necessity; it’s a strategic business decision.

Implementing Effective Machine Guarding

Implementing an effective machine guarding program requires a comprehensive approach:

  • Hazard Assessment: Identify potential hazards associated with machinery and prioritize areas requiring immediate attention.
  • Guard Selection: Choose appropriate guarding solutions based on machine type, operational requirements, and worker interaction.
  • Training and Awareness: Educate employees on the importance of machine guarding, proper usage, and reporting procedures for damaged or missing guards.
  • Regular Maintenance: Inspect and maintain guards regularly to ensure they remain functional and compliant with safety standards.
  • Continuous Improvement: Stay updated on technological advancements and regulatory changes to enhance your guarding systems over time.

Conclusion

Machine guarding is an indispensable element of workplace safety, protecting workers from harm while boosting operational efficiency. As industries continue to adopt advanced technologies, the integration of innovative guarding solutions ensures that safety standards evolve alongside progress. By prioritizing safety through effective machine guarding, businesses can create secure, productive environments where employees thrive.

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Magnasafe : Magnetic, Non-Contact Safety Switch https://industrialmachinerydigest.com/safety-maintenance/magnasafe-magnetic-non-contact-safety-switch/ Wed, 06 Nov 2024 21:34:05 +0000 https://industrialmachinerydigest.com/?p=81151 Norstat, Inc. now carries a full line of Non-Contact, Reed and Magnet Operated Safety Switches ideal for machine guarding applications where guard locking is not required.

The Magnasafe series are easy to install, easy to maintain and have been specifically designed for use with today’s modern safety relays. These switches are fully encapsulated, non-contact switches that are ideal for long-term use in harsh and wet environments. They are available in a variety of sizes and contact configurations, have a short switching distance and are extremely tolerant to misalignment.

Magnasafe switches are available with robust ABS or 316 grade Stainless Steel housings making them suitable for hygienic and washdown applications. They are available in various cable lengths with open wire or M12 quick disconnect option. They are available in 0.5A, 1A, 2A & 3A at AC voltage or DC voltage switching capability. Magnasafe switches have a protection rating of IP67 and IP 69K and are also available in a high temperature version.

Contact Norstat for additional information, pricing, and availability.[/al

About Norstat

Since The early 1960’s, Norstat has been servicing the industrial automation marketplace by offering safety, automation and connectivity solutions to the machine, process control, robotic, and automation industries with a complete line of safety, control, automation and connectivity products. Our trained engineering staff at our Rockaway, NJ headquarters as well as our numerous representatives out in the field can offer expert solutions for all of your safety, automation, and connectivity requirements.

Our SAFETY program includes Safety Light Curtains, Muting Light Curtains & Safety Controllers, Safety Interlock switches, Non-Contact Safety Switches, Safety Relays as well as Optical and Audible Signaling Devices. Our AUTOMATION program consists of Sensors for Pressure, Vacuum, and Positioning, Photoelectric & Ultrasonic Sensors, Foot Switches, Limit Switches both IEC body and Miniature types for axis control as well as a full line of Push Buttons, Panel Mount Switches, Buzzers and Emergency Stop Switches. Our CONNECTIVITY program features DIN Connectors for Sensors and Solenoid Valves, M8/M12 Connectors for Sensors and Switches, Passive & Smart Distribution Boxes, Automotive Connectors ( D-Type ) as well as a full range of special connection solutions that can be custom designed to fit most any application. This complete program enables our customers to conform to both the domestic and international machine safety and compliance standards along with the knowledge that Norstat supports their products with a friendly and experienced customer service team.

SUBSCRIBE to our Complimentary Publications:
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Orbital Wrapper Manufacturer Increases Made in USA Components to 90 Percent https://industrialmachinerydigest.com/metalworking/machining/orbital-wrapper-manufacturer-increases-made-in-usa-components-to-90-percent/ Tue, 15 Nov 2022 16:36:42 +0000 https://industrialmachinerydigest.com/?p=68696 Orbital wrapping machine manufacturer TAB Industries, LLC, Reading, Pa. (www.tabwrapper.com), has increased the amount of component parts that are “Made in USA” in its TAB Wrapper Tornado line of pallet wrappers to 90 percent. Now manufacturing more than 40 different parts per orbital wrapper in its Reading, PA facility, the company increased the use of in-house and locally sourced components as a key part of its business strategy to help insulate production from global supply chain disruptions and permit faster lead times. Recent investments in fabricating, welding, automated laser cutting, and CNC machining equipment have eliminated reliance on outside suppliers and accelerated lead times by approximately two weeks. Current lead times for the standard model wrapping system are at eight weeks.

First manufactured in 2011 using only [40?] percent of component parts that are “Made in USA”, the TAB Wrapper Tornado orbital wrappers today feature heavy gauge steel wrapping rings, laser cut machine guarding, a variety of latches, clips, and plates, and advanced electronics, all designed, manufactured, assembled, wired, and programmed in-house and delivered ready to plug in and operate. The company’s streamlined production capabilities also promote fast delivery of replacement parts.

The TAB Wrapper Tornado line of orbital wrapping machines automatically apply stretch wrap 360 degrees around and under the pallet and load to create a sturdy, secure, unitized load in seconds without banding, boxing or strapping. Testing is offered using customer-supplied pallet loads to verify performance.

For more information, contact TAB Industries, LLC, 2525 N. 12th Street, Reading, PA 19605; 610-921-0012; info@tabwrapper.com or see www.tabwrapper.com.

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Tormach Inc. Expands in USA And Europe https://industrialmachinerydigest.com/metalworking/machining/tormach-inc-expands-in-usa-and-europe/ Wed, 22 Dec 2021 16:54:05 +0000 https://industrialmachinerydigest.com/?p=62216 Tormach Inc., the industry’s leading supplier of affordable and compact CNC machines, has announced it has expanded its domestic and international operations by moving to a new corporate headquarters facility in Madison, Wisconsin, and entering into a distribution agreement with CNC Machine Tools Ltd. of Snetterton, Norfolk, England.

In Wisconsin, Tormach has moved from its previous location in Waunakee to a new building in Madison. The new address is:

4009 Felland Road Ste. 120
Madison, WI 53718 USA
Tel. (608) 849-8381 (phone number remains the same)

“We are excited with our move to this new facility,” said Daniel Rogge, Tormach’s CEO. “We needed less office space, but more warehouse space to expand our machine assembly services and better serve our customers, and this new building is perfect for that.” Less office space was needed due to most company employees continuing to work remotely, said Rogge.

Eight Tormach machines will be housed in the new demonstration area in the building, as the company continues to increase its remote machine demonstrations via Zoom, Microsoft Teams and other platforms.

UK & Eastern Europe Expansion

CNC Machine Tools Ltd. will be Tormach’s exclusive distributor in the United Kingdom and Eastern Europe. They will offer machine assembly services, training, and leasing and financing options. In addition, a UK demo showroom will soon be available for customers and prospects to see Tormach equipment in person. It will feature Tormach’s PCNC 440, 770M, and 1100MX CNC milling machines for in-person machine demonstrations. Meanwhile, virtual demonstrations will also be available.

“We are excited to be partnering with CNC Machine Tools,” said Lori Morrison Bufalo, Tormach’s Marketing Director. “We have received numerous requests for our products in the UK, and our customers will now have the service and support they need from a company that is a specialist in the CNC machining field.”

About CNC Machine Tools Ltd.

CNC Machine Tools Ltd is one of the largest and longest established companies specializing in the servicing, repair and maintenance of all types of machines including CNC types. CNC Machine Tools Ltd have a highly experienced team, providing a comprehensive service to customers across a range of sectors. These include Steel, Automotive, motorsport (including F1), aerospace, oil and gas, energy, general manufacturing, machine shops, stone cutting, wood, and heavy industry.

CNC Machine Tools Ltd can provide the following support for small, medium and high-capacity facilities :

  • One-off servicing and service contracts
  • Emergency repair and breakdown
  • Embedded total maintenance cover
  • Supplementary maintenance cover
  • Machine relocation
  • Machine refurbishment
  • Machine guarding
  • PUWER assessments and remedial work
  • Parts supply
  • Ballbar checks and thermology

About Tormach

Located in Madison, Wisconsin USA, Tormach Inc. is dedicated to providing exceptionally engineered products, technical support, and customer service at the lowest possible cost. Our focus is to help our customers realize goals in CNC by providing tools and resources to help transform concepts into real products.

Whether you are involved in research and development, education, short run production, or simply an entrepreneur with an idea, Tormach small CNC products will allow you to make what you need easier, quicker, and more affordably.

For more information, visit their website.

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Register for WESTEC and gain access to education focused on best practices that you can implement today. https://industrialmachinerydigest.com/quality/register-for-westec-and-gain-access-to-education-focused-on-best-practices-that-you-can-implement-today/ Tue, 09 Jul 2019 22:51:24 +0000 https://industrialmachinerydigest.com/?p=47444 Check out the following sessions all taking place in the SME ZONE on the show floor.

Click HERE to Register Today!

All education in the SME ZONE is included with your complimentary registration.

 

More Educational Opportunities at WESTEC!

Additive Manufacturing Materials Seminar

Co-located at WESTEC, this seminar will focus on how major manufacturers and suppliers have transformed their operations by embracing Additive Manufacturing with a focus on materials used to produce production-ready parts.

Registration is required.

Click HERE to REGISTER NOW and SAVE 40%!

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New Bumper Guards Safeguard Orbital Wrapping Machines https://industrialmachinerydigest.com/safety-maintenance/new-bumper-guards-safeguard-orbital-wrapping-machines/ Thu, 03 Jan 2019 22:56:30 +0000 https://industrialmachinerydigest.com/?p=37672 Packaging machinery manufacturer TAB Industries, LLC, Reading, Pa. has unveiled new bumper guards on its TAB Wrapper Tornado(R) line of orbital stretch-wrapping machines. Offered as an option on the company’s standard and custom models, the new bumper guards feature precision, 16-gauge steel centered at the front of the orbital wrapper to provide a sturdy barrier that safeguards the machine from contact with lift trucks. As an additional safeguard, the bumper guards are covered in vinyl safety tape in a striking pattern that coordinates with the safety tape demarking the wrapping ring to provide lift truck drivers with a visual alert.

The durable bumper guards add to the series of designed-in safety features included as standard on the line of orbital wrapping machines such as steel machine guarding, multiple, built-in emergency stops, and a clever, side-access door for plastic film roll replacement that automatically cuts power to the machine when opened. The bumper guards are designed to slide into the base of the 40-, 80- and 100-inch TAB Wrapper Tornado models and can be retrofit on machines already in the field.

To be shown at Promat booth #S5615 on April 8th, 2019, in Chicago, IL, the patent-pending orbital wrappers automatically wrap plastic film 360 degrees around and under a pallet load to create a single, secure load that remains intact in transport and storage. The packaging machines are manufactured in the company’s Reading, Pa. headquarters and ship fully assembled with a full warranty, ready to plug in and operate.

For a free brochure or more information, visit www.tabwrapper.com or contact info@tabwrapper.com

TAB Industries, LLC
2525 N. 12th Street
Reading PA 19605
P: (610) 921-0012

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Preventing Risk, Protecting People https://industrialmachinerydigest.com/safety-maintenance/preventing-risk-protecting-people/ Mon, 01 Oct 2018 16:26:42 +0000 https://industrialmachinerydigest.com/?p=40731 Machinery and machine guarding is one of the Department of Labor’s Occupational Safety and Health Administration (OSHA) most cited violations year after year. In 2017, it was the eighth most frequently cited safety infraction on the list, with OSHA recording 1,933 machine guarding violations, resulting in millions of dollars’ worth in proposed penalties.

According to OSHA, approximately 18,000 workers that operate and maintain machinery suffer amputations, lacerations, crushing injuries, and abrasions each year as a result of inadequate machine guarding protocols, and on average 800 fatalities due to inadequate protection. The absence of proper machine guarding procedures or protocols in place put workers at significant risk.

In accordance with regulation standard 1910.212, employers have a legal obligation to provide machine guarding to protect the operator and other employees in the machine area from hazards. Many will assume Lockout/Tagout (LOTO) is the only option – this is a common misconception, and this method can be defeated. Trapped key interlock (TKI) safety systems force employees to follow a pre-determined sequence of operations and are recommended in the latest ANSI Z244.1 standard.

Improving LOTO – Standard ANSI Z244.1

Today’s manufacturing environment is very demanding with increasing pressures on supply chain efficiency and productivity. According to OSHA, approximately 3 million workers service equipment and face the greatest risk of injury if LOTO is not properly implemented. Due to the rise in machine guarding and LOTO violations, in 2016 the Z244 Committee made a series of updates to the ANSI/ASSE Z244.1 (2003) standard aiming to reverse the trend and expand the language of the standard to be scalable to meet the needs of both large and small businesses.

The 2016 revision focuses on the control of hazardous energy and alternative methods to protect workers against the startup of machinery. The changes were made to improve hazardous energy control procedures and guidance for working with contractors (Section 7). The revision more clearly defines alternative risk reduction methods of LOTO (Section 8), identifying trapped key interlocks as an alternative method to ensure all residual motion and energy is completely expelled once the machine has been isolated – removing the risk of spontaneous startup.

Machine Guarding – What Are the Options?

Isolating equipment or machinery is essential in order for workers to carry out important work maintaining, cleaning or repairing. Workers risk serious or fatal injures if machinery ‘energizes’ unexpectedly.

LOTO addresses the need to isolate equipment and, as a written process, allows safe personnel access when maintenance of machinery is required. However, this process is susceptible to human error; tempting workers to bypass safety practices, putting themselves and their colleagues at risk.

Trapped key interlock (TKI) safety systems remove the temptation of bypassing procedures and eliminates human error. This alternative protection measure has enhanced the protection of workers in the United States since 1932 and prevented injury and death for countless workers. In effect TKI is the advanced method of Lockout/Tagout, going above and beyond to ensure safety procedures are followed.

TKI- How Does It Work?

An initiating key is trapped while the machine is running. To start the process, the key is turned and removed, engaging the lock bolt and isolating the power. This key then engages the associated access interlock, allowing the individual access to the area safely. The key remains trapped in the access lock while the gate or door is opened. The key can only be removed when the gate or door has been shut, then following back to the point of power isolation to restart the machine.

When two or more trapped key interlocks are used in a safety application, an interlock system is formed. An interlock system is a group or series of trapped key interlocking devices applied to associated equipment or guarding in a way that allows operation of the equipment only in a safe, predetermined sequence of operations. TKI safety systems can be designed for both linear and non-linear sequential safety operations, mounted permanently on the equipment ensuring that a process is followed and cannot be sidestepped or cut short. When properly applied, a trapped key interlock safety system makes a significant contribution to worker safety.

Protecting Workers

TKI safety systems are used to eliminate human error, preventing a worker from performing an unauthorized or unsafe operation when machinery or equipment is otherwise engaged. TKI safety systems are implemented to protect lives, equipment, operating processes, and production. It is the goal of every company to create a safe working environment for their employees and a TKI safety system should be an instrumental part of such safety procedures.

For more information on how trapped key interlock systems can benefit your safety procedures and help to create a safer working environment for your employees, visit: www.kirkkey.com.

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