J.B. Titus

Articles

Process Safety October 22, 2012

Machine Safety: Consequences of not performing risk assessments!

If a machine shop hasn't had an incident or employee injury for 10 years, is that result of an excellent safety culture or simply great luck? Are “hope” and “lack of attention” proactive business strategies?

By J.B. Titus
Process Safety October 11, 2012

Machine Safety: hazard remediation, mechanical versus control system solutions

What's the residual risk for Cat 3 hazard mitigated by a fixed steel plate? Did the repair result in a control reliable solution? Are physical barriers or control solutions better to reduce risk. Five steps define the hierarchy of measures for hazard mitigation and machine safety risk reduction.

By J.B. Titus
Process Safety October 3, 2012

Machine Safety: Globalization of safety standards doesn’t equal global compliance

Countries are teaming to globalize and harmonize machine safety standards. IEC and ISO standards are trending to global standards and slowly are being adopted by various countries as requirements for conformance. Is compliance becoming global?

By J.B. Titus
Process Safety September 12, 2012

Machine Safety: Only engineers can lead the Risk Assessment process?

An incremental documented process called “Risk Assessment” is required in many updated standards. And, a new standard, ANSI B11.0 – 2010, Safety of Machinery – General Requirements and Risk Assessment, is dedicated to this topic. With all this attention folks still are not clear regarding whether an engineer is essential to lead the risk assessment process.

By J.B. Titus
Process Safety September 7, 2012

Machine Safety: Where do effective safety cultures roost?

An improved safety culture, advocated at the business level with engineering input, can bring about faster implementation of proven machine safety technologies, improving safety and adding economic value.

By J.B. Titus
Process Safety August 29, 2012

Machine Safety: an automatic sequencer does what?

In the world of machine control and machine safety, to really appreciate where we are today, don’t we need to have a reasonable understanding of where we’ve come from?

By J.B. Titus
Process Safety August 15, 2012

Machine Safety: consensus standards and OSHA compliance

In our plant we comply 100% with the OSHA regulations of 29 CFR 1910.xxx for machine guarding and personnel safety. Accordingly, OSHA would have no grounds to cite us for violations, right?

By J.B. Titus
Process Safety August 7, 2012

Machine safety and safety certified networks

Do you remember when PLCs came out in the early 1970s – were there any communication networks available at that time? What is pier to pier? Fishing?

By J.B. Titus
Process Safety July 30, 2012

Machine Safety: What do you mean the vice president said: So What?

After a two hour presentation in the conference room providing all the new high technology based machine guarding solutions and testimonials on operating cost savings, the vice president of operations said, “So what!”?

By J.B. Titus
Process Safety July 19, 2012

Machine Safety: Updating ISO 13849-1 & compliance for robots

On Feb. 7, I wrote a blog titled - ISO 13849-1 compliance is mandatory for robot applications (ANSI/RIA/ISO 10218-1&2: 2011). This particular blog has created a significant amount of feedback, which was my goal.

By J.B. Titus
Discrete Manufacturing July 12, 2012

Machine Safety: Is OSHA okay with my ‘acceptable’ risk mitigation?

“We have reviewed all of our machine safety hazards and have applied mitigation solutions to every hazard. Will OSHA agree with the mitigated 'acceptable' risk levels we’ve achieved?”

By J.B. Titus
Process Safety July 10, 2012

Machine Safety: Are the stopping categories confusing?

My e-stops are validated to achieve a Category 0 stop function. Therefore, of the three stopping categories, we’re stopping machine motion the quickest way possible. Right? (Standards are cited below. Are they clear enough?)

By J.B. Titus
Process Safety July 5, 2012

Machine Safety: My main disconnect e-stop isn’t red with a yellow background

Does my main disconnect functioning as an e-stop need to be red with a yellow background?

By J.B. Titus
Process Safety July 3, 2012

Machine safety: What does ‘reset’ mean?

Who hasn’t heard the term “reset” around machine control? And, how many understandings are there from machine builders to machine users? What do standards think about the term?

By J.B. Titus
Process Safety June 25, 2012

Machine Safety: What differentiates a hazard analysis from a risk assessment?

With machine safety, why aren’t the differences well known between a Hazard Analysis and a Risk Assessment? It has been 12 years since machine safety jumped to the forefront of industrial opportunity.

By J.B. Titus
Process Safety June 20, 2012

Machine Safety: Where do I start?

“We are a medium sized business in manufacturing and our new owners are very interested in machine guarding and machine safety for our employees. Where do I start?” Eight tips follow for a machine safety and machine guarding.

By J.B. Titus
Process Safety June 15, 2012

Machine Safety: How do I know that a consensus standard has been updated?

At almost every Machine Safety Seminar I hear someone ask: “How do I know that a consensus standard has been updated?”

By J.B. Titus
Process Safety June 13, 2012

Machine Safety: Has OSHA ever fined an employee for a safety violation?

Everyone knows that OSHA applies fines to employers for citable safety violations to its regulations. Yet, since OSHA also requires employees to be responsible for safety, has an employee that violates safety regulations ever been fined?

By J.B. Titus
Process Safety May 16, 2012

Machine Safety: Does OSHA reference consensus standards for compliance?

I have presented or been a presenter at literally scores of machine safety seminars over more than 10 years and absolutely the most asked question is, “Does OSHA reference consensus standards for compliance?”

By J.B. Titus
Process Safety May 7, 2012

Machine Safety: Does a risk assessment need to be updated for a minor machine modification?

We’ve made some minor changes to several machines over the past six months but none of these modifications included the safety system. Our engineer said that there was no change in operator safety. Do we have to update the risk assessments anyway? See ANSI B11.0 – 2010 Safety of Machinery – General Requirements and Risk Assessment; OSHA recommended.

By J.B. Titus
Process Safety April 18, 2012

Machine Safety: Functional safety and the steps to be compliant in the U.S.

Who has the steps identified for anyone considering moving their machine safety compliance to functional safety for their organization? Let’s assume for this discussion that functional safety means being compliant with EN ISO 13849-1.

By J.B. Titus
Workforce Development April 17, 2012

Machine Guarding: Trouble shooting old systems is doomed with iPad skills

Do today's new hires have what it takes? Over the past 10 years machine safety has experienced probably the greatest transformation since the advent of machine control technology, which sets the stage for an organizational skills gap discussion. Are the skilled trades persons entering industry over the past ten years equipped to evaluate and trouble shoot 40-year-old control systems without any connection for plugging in a lap top computer?

By J.B. Titus
Process Safety March 29, 2012

Machine Safety: The missing ah-ha for plant management

Isn’t the machine a hazard as well as the individual hazards on a machine? Last week I blogged about risk assessments, the mitigation process, and how the new methodologies have migrated from qualitative to quantitative approaches. Since designers have engineering tools to design out hazards. Managers need reliable tools to designate an individual hazard level for each machine on their plant floors.

By J.B. Titus
Process Safety March 23, 2012

Machine Safety: Does it matter, the Aggregate Hazard Level for a machine?

When conducting a risk assessment of the machine’s individual identified hazards does the safety level of the complete machine or system matter? Does anyone have a solution for determining the aggregate level of an entire machine? Does anybody care?

By J.B. Titus
Process Safety February 17, 2012

Machine Safety: System degradation and incidence of injury

Are older hardwired safety systems less safe than newer integrated safety systems? (See table.) Since 2002 when integrated safety automation was introduced for machine safety, a growing awareness has emerged questioning the effectiveness over time of a hardwired / hardware safety system versus an integrated safety system. What is the ultimate effectiveness of a safety-related function comparing the date of commissioning to a date several years later given the two approaches?

By J.B. Titus
Robotics February 8, 2012

Machine Safety: ISO 13849-1 compliance is mandatory for robot applications, ANSI/RIA/ISO 10218-1&2: 2011

Are you aware that our consensus standard for robots (RIA 15.06) has changed and now calls out normative compliance requirements to ISO 13849-1: 2006? How many machine safety domestic standards have made this transition? Does anybody know? (See related link added June 4.)

By J.B. Titus
Process Safety January 30, 2012

Machine Safety: NFPA 70E and international requirements

Machine Safety has several different focused areas of potential hazards. One of the areas getting a lot of attention is Arc Flash and NFPA 70E. A recent article published by Control Engineering earlier this month had some startling results. An alarming 72% of respondents (302) “always” plus “mostly” regularly violate NFPA 70E while working on control panels.

By J.B. Titus
Machine Safety January 23, 2012

Machine Safety: Without an injury, OSHA issues citations for more than $1 million

Whoa, OSHA issues fines for $1,013,000. following a complaint filed by a worker. OSHA investigated the manufacturer and discovered 13 Serious and 17 Willful violations of Regulations. Was this Company just waiting to be caught in violation or were these violations a result of their safety culture. You decide!

By J.B. Titus
Process Safety January 12, 2012

Machine Safety: How safe is safe enough?

In machine guarding, how safe is safe enough? Over my 40 years in industry I’ve heard this comment many times. Is this attitude driven by “safety culture” or is it just a product of qualitative risk management? Is this why risk management for machine guarding and functional safety is advancing globally to quantitatively derived engineering and validation?

By J.B. Titus
Process Safety January 6, 2012

EN ISO 13849-1, the quantitative approach to machine safety begins with a qualitative process

EN ISO 13849-1 has now been fully in force since Jan. 1, 2012, without exception and EN 954 has fully been withdrawn. We’ve heard for four years or more that this change in direction equates to a paradigm shift for industry because it in part moves hazard level determination and mitigation from a qualitative process to a quantitative process. There’s more...

By J.B. Titus
Process Safety January 5, 2012

Machine Safety: The myths of safety cultures

Every organization at some point in time has held a myth about machine safety. Here are six machine safety myths. What’s yours? Leave a comment.

By J.B. Titus
Machine Safety December 29, 2011

Machine Safety: Does adding a hard guard always make your machine safer?

Machine guarding is sometimes approached with the methodology that says lets first add a hard guard to protect the operator from the hazard. Does this always mitigate the hazard, reduce the hazard to an acceptable level, or achieve “safe enough”?

By J.B. Titus
Machine Safety December 27, 2011

Machinery Directive In 4 Days Drops EN 954 and EN ISO 13849-1 Is Fully In Force: What’s Your Impact?

In Europe on Jan. 1, 2012 the qualitative process (EN 954) of machine safety hazard identification (B, 1, 2, 3, and 4) and mitigation disappears and the quantitative process (EN ISO 13849-1) is fully in force with its compliance requirements of Performance Level (a, b, c, d, and e). The Category system is officially put to rest and hence forth all safety circuit (electrical, hydraulic, or pneumatic) must follow these new prescriptive requirements. But, here in the United States how does this change affect your business?

By J.B. Titus
Machine Safety December 9, 2011

Machine Safety: Are you using planning and execution tools?

Machine guarding has clearly entered the technology world with integrated safety systems. But, are you still using 1970s approaches for planning and executing? Scotty didn’t beam colleagues to the Starship Enterprise via Hertz Rent-a-Car!

By J.B. Titus
Machine Safety December 6, 2011

Machine safety and integrated safety systems

Integrated safety systems are proven to improve productivity, safety, and the bottom line. Really? So, what’s holding back the tsunami of industry picking up the pace to apply integrated safety systems across manufacturing?

By J.B. Titus
Machine Safety December 1, 2011

Machine Safety Culture: Compliance versus cooperation driven

Employee safety compliance is a blend of hard physical restraints or barriers and a desire to follow a set of safety behaviors. But, compliance is interpreted by most as meeting the bare minimums. And, if employees don’t choose to accept or behave in the role “another” has found for them, they don’t have to play it. If so, how does a company develop or expand a safety culture to become best in class?

By J.B. Titus
Machine Safety November 22, 2011

Machine Guarding: Do I need to follow codes and regulations like NFPA?

What is the purpose of so many codes and regulations? I work in panels all the time. Sure, I take risks every day but do “I” need regulations to keep “me” safe? Bah humbug on the regulations. I know what I’m doing! (Leave your comment: Do you think you're safe without PPE in some control panels?)

By J.B. Titus
Machine Safety November 11, 2011

Machine Guarding: Tolerable vs residual risk

Why do so many colleagues in manufacturing choose to avoid the terms – tolerable risk and residual risk? If there’s one thing “integrated safety systems” and requirements for risk assessments have brought to the industrial forefront over the past ten years – it’s risk awareness. It’s now “OK” in conversation and correspondence within companies to use words like; risk, safety, mitigation, hazard, and consequences – all in one paragraph.

By J.B. Titus
Machine Safety November 3, 2011

Machine guarding: Category 4 versus reliability

When is a Category 4 solution ineffective in a machine guarding application? Is your machine safety risk assessment looking at the right things? Is this your accident waiting to happen? Consider this example.

By J.B. Titus
Machine Safety November 1, 2011

Machine guarding and economic value: Wired safety versus safety automation

Over the past 10 years machine safety has experienced probably the greatest transformation since the advent of machine control technology. In my opinion, the recent adoption of “safety automation” has outpaced the original adoption of PLC technology in the early 1970’s. It was in the early 1970’s that machine safety was mandated by industry standards to be “hard wired.” At this time, PLC technology had just been introduced, and its reliability paled in contrast to the robust PLC reliability of today. See graph illustrated below.

By J.B. Titus
Machine Safety October 25, 2011

Machine guarding and the hierarchy of measures for hazard mitigation

Do you know the five levels of hazard mitigation? Machine guarding isn’t completed task that’s checked off a list. Eliminate, isolate, add engineering, implement controls, and use PPE, then repeat.

By J.B. Titus
Machine Safety September 24, 2011

ISO 13849-1 Machine Guarding Adoption, Part 4 – safety standard merger

Adopting EN ISO 13849-1 by Dec. 31, 2011 has been taking a lot of attention this year particularly for manufacturers of machinery and global end users. Guess what? The IEC (International Electrotechnical Commission) world and the ISO (International Standardization Organization) world are voting to merge EN ISO 13849-1 and IEC 62061. Yikes – when will “Safety of Machinery – Safety Functions of Control Systems” settle down?

By J.B. Titus
Machine Safety September 1, 2011

ISO 13849-1 Machine Guarding adoption, Part 3

What is your plan to comply with the ISO 13849-1 Machine Guarding standard? By now you’ve attended seminars, read white papers and magazine articles, heard from colleagues, or even read some of these blogs on this subject. So what? We don’t legislate compliance in the US. Instead, we have consensus standards.

By J.B. Titus
Machine Safety August 24, 2011

ISO 13849-1 Machine Guarding adoption, part 2

The scope statement in the machine guarding standard reads, “This part of ISO 13849 provides safety requirements and guidance on the principles for the design and integration of safety-related parts of control systems (SRP/CS), including the design of software. For these parts of SRP/CS, it specifies characteristics that include the performance level required for carrying out safety functions. It applies to SRP/CS, regardless of the type of technology and energy used (electrical, hydraulic, pneumatic, mechanical, etc.), for all kinds of machinery.” Good stuff, right? At the end of December 2011 EN 954-1; 1996 can no longer be used to demonstrate conformity.

By J.B. Titus
Machine Safety August 19, 2011

ISO 13849-1 Machine Guarding adoption, part 1

Let’s assume that adopting ISO 13849-1 for Machine Guarding is unavoidable. That said, the “professorial” view is to train/educate everyone in industry about the requirements for compliance and possible business advantages. Then, there’s the “practical” view...

By J.B. Titus
Discrete Manufacturing August 10, 2011

I don’t have to upgrade my machine safety to the latest technology

I’ll bet nearly everyone reading this blog has heard someone say, “I don’t have to upgrade my machine safety to the latest technology.” Right? And, the next comment might be something like, “My shop is safe because we haven’t had an accident for umpteen years.” Are these folks wrong? Here are 5 questions to ask about machine safety.

By J.B. Titus
Machine Safety July 20, 2011

Not Again – E-Stops Do Not Equal Machine Safety

How many times does this issue come up? An e-stop device is not a safety device! Therefore, it’s not a part of the safety related parts of a control system (SRP/CS). Then, why is an e-stop device so often confused as being part of the safety design for a machine?

By J.B. Titus
Machine Safety July 14, 2011

Machine safety and degrading component reliability

Is your machine downtime sometimes a surprise? Did a component in a safety circuit fail because it simply wore out and nobody knew it was about to fail? Well, maybe help has just arrived. Has anyone heard about EN ISO 13849-1; 2008? See "4 ways to reduce surprise downtime."

By J.B. Titus
Machine Safety July 5, 2011

We’re safe; we’ve had no machine safety accidents for a long time

All too often I hear or read about a companies’ great safety record only to read on about a major incident or accident and the devastating human and/or business impacts that occur. One central place to stay current regarding safety in general as well as specific incidents is OSHA’s twice monthly email report titled OSHA Quick Takes.

By J.B. Titus
Machine Safety June 27, 2011

Risk assessment – A best practice for sustainable performance

Generally speaking, industry has awakened to the term, risk assessment. Yet, many companies dealing with machine safety seem to still be wrestling with issues like; when, why, if, and how often in actually implementing robust programs.

By J.B. Titus
Machine Safety June 20, 2011

EN ISO 13849-1; 2008 – Are We Ready By December 2011?

Some companies and the machine safety folks are having difficulty meeting the new EN ISO 13849-1; 2008 requirements by the end of this year. So, my question remains, ARE WE READY? SIL (safety integrity level) and Cat (Category) are fading out; SIL and PL (Performance Level) are becoming the new basis for machine guarding and hazard mitigation.

By J.B. Titus
Machine Safety June 16, 2011

Machine Safety and Wireless Devices

Conventional machine safety has been challenged for the last 10 years with new technology and standards. Safety automation has led the new technology pack while NFPA 79 took the lead on the standards side. Both combined in 2002 to introduce safety PLCs, safety fieldbus, and e-stops on a safety rated bus. The latest challenge to conventional safety is wireless (aka cableless) innovation impacting devices, fieldbus technology, and machine control applications. Are we ready?

By J.B. Titus
Machine Safety May 25, 2011

Cost savings opportunities in machine safety

Machine safety shifted in 2002 with the changes in NFPA 79 introducing safety PLCs and safety communication and control bus technology as solutions allowed for machine guarding, the beginning of a major paradigm shift in machine safety. See savings tally.

By J.B. Titus
Machine Safety May 16, 2011

OSHA safety regulations: Incorporation by reference-Do I need to know?

Machine safety OSHA regulations, 29 CFR 1910.XXX, have been in place since the beginning of OSHA in the early 1070’s. So, what’s the problem, and what the devil is “incorporation by reference”?

By J.B. Titus
Machine Safety March 29, 2011

Nuts and bolts of machine safety

For machine safety – let’s see the hands for everyone who’s familiar with current “nuts and bolts” for compliance! Ah, does the word current cause so few hands to be held high?

By J.B. Titus
Machine Safety March 28, 2011

Machine Safety – Wired versus Integrated Safety Automation!

As a plant manager does it make any difference to you whether your machines are guarded via wired safety guards or integrated safety automation guards?........You alone own the safety culture of your business.

By J.B. Titus
Machine Safety March 11, 2011

Have You Considered Machine Safety’s Compliance Lifecycle?

As a plant manager, have you ever wondered in the dark of night how effective the machine guarding in your plant is protecting your #1 resource, your employee?

By J.B. Titus
Machine Safety February 28, 2011

Is OSHA Rear View Mirror Enforcement?

OSHA Assistant Secretary David Michaels addressed the staff of Public Citizen Jan. 18 to commemorate the organization's 40th anniversary. Michaels said, "OSHA is not working to kill jobs; we're here to stop jobs from killing workers."

By J.B. Titus
Machine Safety February 28, 2011

Does “Performance Level” Really Replace “Category” For Machine Safety In The U.S.?

Over the next ten years picture a safety circuit with six safety certified components and four are certified to Performance Level (PLx) and the other two are certified to Cat.x! Is the outcome clear?

By J.B. Titus
Machine Safety February 23, 2011

EN ISO 13849-1; 2008 – Are We Ready? – Part 2

Does anyone have an easy answer on how a safety application proof test can be accomplished with dissimilar tools and without the skilled resources for analysis? See table.

By J.B. Titus
Machine Safety February 11, 2011

Machine Safety – Am I Responsible?

Case examples cross my desk almost weekly asking, “am I responsible” or liable for for machine safety? These questions come from end users, OEMs, systems integrators, and suppliers. Initially, OSHA provides an answer, but beyond that...

By J.B. Titus
Machine Safety January 31, 2011

Unfolding Lockout/Tagout (LOTO)!

An OSHA/legal definition of de minimis and a clearer understanding of – What do employees need to know? will certainly help all companies unfold LOTO for full compliance.

By J.B. Titus
Machine Safety January 25, 2011

Functional Safety From UL – Let’s Discuss!

Certainly, functional safety evaluations can play a large role in improving levels of machine safety in industry. However, let's start discussing the transitional issues. Old practice of determining hazards under EN 954-1 qualitatively is being replaced by ISO 13849-1 and the new quantitative PL approach.

By J.B. Titus
Machine Safety January 21, 2011

Machine Safety – Hardwired vs Integrated?

Since 2002, NFPA 79 took the lead for safety standards and eliminated the requirement that everything safety on a machine “shall be” hard wired.

By J.B. Titus
Machine Safety January 6, 2011

Machine Safety and Lockout/Tagout

Lockout/tagout (LOTO) standard is an OSHA regulation for machine functional safety that establishes employer responsibility to protect employees from hazardous energy sources on machines and equipment during service and/or maintenance. OSHA says ...

By J.B. Titus
Machine Safety December 28, 2010

Machine Safety – A Review of 2010 Developments

Machine Safety topics have covered the gamut throughout 2010 from regulations and industry standards to new compliance tools and innovative technology. The challenge to industry throughout 2010 has been to...

By J.B. Titus
Machine Safety December 21, 2010

Wireless Control and Wireless Safety!

Safe wireless (also known as safe cableless) is often applied to a machine using a “zone” concept to reduce the wireless communication distance. As wireless machine communications increase, application questions include the following.

By J.B. Titus
Machine Safety December 17, 2010

Functional Safety – A New “Mark” From UL

UL offers functional safety certification.

By J.B. Titus
Machine Safety December 3, 2010

Integrated Machine Safety – or Not!

How will the 2011 updated NFPA 79, Electrical Standard for Industrial Machinery, affect arguments for and against a fully integrated architecture for safety and general control?

By J.B. Titus
Machine Safety November 30, 2010

E-Stops Aren’t Safety Devices

While safety experts say machine safety e-stops are not safety devices, folks in industry pretty much all seem to think e-stops are safety devices because of their function. Ask yourself these three questions.

By J.B. Titus
Machine Safety November 12, 2010

Machine safety and your safety culture

How's your machine safety culture? Have you heard anyone say: My hand is quicker than the machine, production is more important than safety, we don't need machine guards because...

By J.B. Titus
Machine Safety November 9, 2010

Machine Safety – Hard Guarding Is Best – Right?

While hard guarding can be best for machine safety in some applications, a risk assessment will help assess which technologies should be applied to achieve tolerable risk. This can be where trouble often begins.

By J.B. Titus
Machine Safety October 7, 2010

Risk Assessment Documentation & the new European Machinery Directive 2006/42/EC

The European Machinery Directive 2006/42/EC clearly calls out the requirements for the “Technical File”. Per this new Directive companies should consider that the risk assessment is required compliance documentation. This requirement is specifically detailed in the General Principles section of Annex I.

By J.B. Titus
Machine Safety September 30, 2010

Trouble Implementing ISO 13849-1; 2006 per the European Machinery Directive

The European Machinery Directive clearly calls out the required transition from EN 954 to ISO 13849-1 by December 2011. With that said, some companies in the U.S. are currently struggling with conformance to the B10 requirement for simple components in order to determine their impact on the related safety performance level. Ironically, this week I’m in Germany participating in an IEC machine safety standard update meeting and I’m surrounded by leading colleagues from around the world on machine safety.

By J.B. Titus
Machine Safety September 25, 2010

Updating Minds About Machine Safety

The Machine Safety segment of industry over the past ten to fifteen years has experienced phenomenal growth of product innovation, solutions for hazard mitigation, and industry regulations, to mention a few. On a global basis anyone can access information and participate in forums in order to understand this evolution of machine guarding solutions.  Independent market study organizations like ARC, VDC, etc.

By J.B. Titus
Machine Safety September 14, 2010

Product Safety Certificates – Like SIL – What’s Their Purpose?

In the news recently there’s been some buzz about the product safety certificates around questions like:     1.)   Are these safety certificates required by insurance companies?     2.)   Are these safety certificates required by industry standards?     3.)   Are these safety certificates required by local codes or regulations?     4.)   And,…….the list goes on? This blog is a call for comment from anyone who has an opinion. Some of us might recall that when hardware and software based products were first made available for safety applications they had to be designed, built, and tested to a standard. The first standard that I’m aware of for industry for this purpose was IEC 61508-1 and it required that these products be tested and listed for such use. Everyone today should know that this means that groups/organizations like UL, TUV, and FM (to mention a few) are the testing and “listing” agency’s more formally known in the US as NRTL’s (Nationally Recognized Testing Laboratories).

By J.B. Titus
Machine Safety August 27, 2010

Machine Guarding Upgrades – I’ll have to do them all!

Four manageable influences to considering a new machine guarding strategy or program are ....

By J.B. Titus