Retrofit Solution Connects All Generations of Motor Controlled Centers to Ethernet Based Devices

retrofit solution

The risk of downtime and maintenance cost has become a leading pain point for many companies.

But, physical network infrastructure solutions including, structure cabling and converged plantwide Ethernet (CPwE), is now part of a retrofit solution that provides the infrastructure required to connect added industrial switches and other smart devices for common Motor Controlled Center (MCC) upgrades.

Remaining fully functional, the MCC Copper Cabling Bundle System removes industrial switches away from harsh environments by taking them out of their cabinets.

With the promised delivery of consistency and repeat-ability, and in response to an increased demand for Intelligent MCC, Panduit launched the enhanced (MCC) Copper Cabling Bundle System.

This system is a cost-effective alternative to purchasing new equipment to upgrade and retrofit an existing MCC.

This system delivers:

  • Consistent monitoring of your systemsretrofit solution
  • Flexibility for easy adjustments when needed
  • Pre-terminated product: providing consistent network performance while reducing installation time and on-site waste.
  • Ensured verified performance: 100% factory tested before the product is delivered to you.

While also providing you the needed electrical infrastructure and control panel solution consumables, Panduit offers quality design guidance for plantwide physical network upgrades to all our customers.

Panduit works closely with certified partners to develop a building-block approach to deploy industrial networks with complete validation and highly integrated solutions that manufacturers need most.

Learn more about the MCC Copper Cable Bundle System.

Smart Business 2018: Prioritizing Electrical Safety for Maintenance and Reliability Professionals

These days, smart businesses prioritize electrical safety. To maximize the benefit of electrical safety with regard to maintenance and reliability in the plant, it’s important to consider the allocation of resources.

When it comes to equipment maintenance, choose reliability over risk. Neglecting the maintenance of electrical equipment and wiring can lead to non-compliance with installation codes and practices, but it can also increase the probability of workplace injury.

Today, the smart business choice is to lean into safety.

It can be said that electrical professionals may be knowledgeable about electrical technology and how electrical equipment functions, but they may not be seasoned experts in safety management and maintenance and reliability systems. And, maintenance and reliability professionals may be highly skilled in understanding and implementing functional equipment, but they may not be familiar with safety management or the facility’s electrical systems.

A facility’s senior management may not have deep expertise in either of these areas, but they do hold the key to financial resources and human resources that can solve for issues of importance, like electrical safety. Therefore, their collective skills and responsibilities can create facility-wide collaboration to improve both the electrical safety program and the electrical system maintenance with an eye on uptime.

Smart businesses also put a significant emphasis on eliminating energized work, whenever possible. This means placing equipment in an electrically safe working condition and verifying that equipment is deenergized must be a primary focus of the electrical safety program.

Lockout/tagout is a critical step in verifying the absence of voltage

Every step to verify the absence of voltage is purposefully designed to serve as a critical safety step.

Eliminating a hazard is the most effective method according to the hierarchy of risk controls, and should be the first choice whenever possible. NFPA 70E emphasizes the need to work on electrical systems only when they are placed in an electrically safe working condition, but creating and verifying this condition requires more than just de-energizing, as it involves multiple steps to confirm the system is safe and verify the absence of voltage.

Though the entire testing process may seem complex, every step is purposefully designed to serve as a critical safety step, making it impossible to skip testing steps and still attain an electrically safe working condition.

Absence-of-voltage testers (AVTs) are permanently-mounted testing devices that are specifically designed to determine if a circuit part is de-­energized prior to opening panels or removing covers to access and maintain electrical equipment.

AVTs are a new product listing category in UL 1436, Standard for Outlet Circuit Testers. They are designed to automatically run internal diagnostics and administer the live-dead-live type of verification testing with an internal known voltage source and actively indicate the absence of voltage.

AVTs help improve electrical safety by way of a Prevention through Design approach, making them an ideal option for maintenance and reliability professionals and their staff.

Achieving New Goals: Maximize Uptime With an Enhanced Electrical Safety Program

Downtime is a killer to the bottom line. Whether planned or unplanned, downtime idles the workforce, slows production numbers, and can create downstream effects that may cause major disruptions to the supply chain.

How does the electrical safety program in your facility maximize uptime?

First, it’s important to bear in mind that although scheduled maintenance will create some amount of downtime, when maintenance is planned downtime can be minimized. Planned maintenance allows adequate time for pre-work safety assessments to be completed without the stressful time pressures that are commonly associated with unplanned downtime.

Taking time to plan for maintenance work creates opportunities to identify hazards, perform risk assessments, incorporate any mitigation techniques, review procedures and areas where training may need to be refreshed, and think about emergency response before work is underway. Thoroughly planning the work from start to end, as well as to complete any prerequisite job briefings and communicating planned actions to affected individuals, helps ensure the work goes safely and smoothly. Uptime is effectively maximized because safety inevitably achieves a decrease in incidents and thus scheduled work and production work can continue unabated.

Manufacturing facility floorplan

How does the electrical safety program in your facility maximize uptime?

In industrial facilities, it’s also important to remember that maintaining electrical equipment is fundamental to optimizing equipment performance that will prevent unplanned downtime. Reliability and safety are closely linked. In terms of electrical safety, reliable equipment requires less maintenance. Because reliable equipment is not being accessed as frequently, there are fewer occasions for workers to be exposed to hazards.

Panduit’s new VeriSafe Absence of Voltage Tester (AVT) can be used as a method of testing and verifying the absence of voltage once equipment has been de-energized. This product utilizes technology that reduces procedure testing time and reduces complexity in a way that improves productivity and maximizes uptime. In addition, because it is installed and mounted permanently on the outside of electrical equipment, it reduces the risk of exposure to electrical hazards for improved worker safety.

A New Approach to an Old Problem

An installed VeriSafe - Absence of Voltage Tester in an electrical enclosure.

The shortcomings of permanently installed voltage indicators led Panduit to create a new and innovative product: the VeriSafe – Absence of Voltage Tester.

The Absence of Voltage Tester (AVT) is a relatively new innovation. As we see it, it’s a new approach to an old problem.

Unlike traditional voltage testers, the AVT is not portable. It is installed in the equipment it is testing. An AVT can be used to determine if and when a circuit part is de-energized prior to opening doors and removing covers from electrical equipment. An AVT will automate the functions of handheld voltage testers for this specific task and will display information about the status of voltage inside equipment without exposure to electrical hazards.

AVTs are entirely different in function, and far more comprehensive than voltage indicators. Although they are both permanently mounted devices, voltage indicators merely provide a visual representation when voltage is present, they are not capable of testing for, nor indicating that, a de-energized condition exists. For instance, if a voltage indicator is not illuminated, it may be because the system is de-energized, but it could also be due to a device failure, an installation failure (if the device becomes disconnected from the wiring, it will not detect voltage), or an indicator (e.g., LED) failure. These are some of the reasons permanently installed voltage indicators were never recognized by OSHA as an alternative to the voltmeter test.

The shortcomings of permanently installed voltage indicators helped bring attention to an industry need and led Panduit create a new and innovative product. An AVT now provides a quick and reliable means of verifying the absence of voltage – a big win on safety and time savings for the electrical worker.

AVTs are defined in a new product listing category that was added to UL 1436, the Standard for Outlet Circuit Testers and Similar Indicating Devices, in September 2016. With the addition of these new requirements, products can now be listed and labeled as an absence of voltage tester. AVT listing requirements were brought about by research presented at the 2016 IEEE Electrical Safety Workshop on electrical injuries that occurred while voltage testing. Because there were no installed devices designed specifically to test for the absence of voltage, unique listing requirements for such a product were not addressed by standards for other product categories. Recognizing this, UL set out to define requirements and identify the best place to publish them. Ultimately, UL 1436 was selected because its scope included other installed testers and it could be revised in a timeframe that coincided with the NFPA 70E 2018 revision cycle, which was also considering provisions for AVTs.

Today, the AVT is truly a new approach to an old problem – and, it’s one that enables user to comply with the new requirements for verifying the absence of voltage in the 2018 edition of NFPA 70E.

The Role Packet Loss Plays in IT and OT Network Performance

Nobody likes a bad packet.

Depending on the network architecture, however, IT and OT network managers look at packet loss differently.

The impact of packet loss

Packet loss negatively impacts IT/OT convergence by reducing throughput and increasing latency. IT and OT network managers look at packet loss differently.

Why do these managers have unique reasons for wanting to banish bad packets? Panduit’s “What is the Impact of Packet Loss?” white paper answers this question, by discussing issues both IT and OT managers encounter as they transform their networks to support business success in the IIoT era.

Reduced throughput
IT network managers dislike packet loss because it steals valuable bandwidth, reducing the link’s available throughput. Typical latency of the enterprise network is responsive enough for their applications.

There is an insatiable appetite for more throughput in enterprise networks, however, not to mention the demand from the myriad connected devices in our homes and in our offices.

A corrupted packet reduces throughput when the switch discards the packet, and again when it is re-sent – essentially causing the packet to be sent twice and reducing a network’s available throughput.

Increased latency
OT network managers look at corrupted packets through a different lens. On the factory floor, a network’s latency is more important than bandwidth or throughput.

For example, when a sensor on the factory floor sends a packet to request an action, it needs the response in milliseconds. The corrupted packet cannot deliver the request, and the retransmission delays the decision on the appropriate action to take. This event can be costly.

IT/OT Convergence
According to Craig Resnick, vice president of ARC Advisory Group, “to properly address the issue of minimizing the corruption of packets requires the convergence of IT and OT, both from a networking infrastructure perspective and a human resources perspective. Converged network architectures bring together IT and OT systems that have long remained separate. As a result, IT and OT professionals who previously only oversaw their own individual systems now must also understand the counterpart technologies to, for example, help eliminate corrupted packets.”

To learn more about the impact of packet loss and how to minimize corrupt packets, no matter your network perspective, download Panduit’s “What is the Impact of Packet Loss?” white paper – or subscribe to our blog to receive our complete 4-part series of IoT 101 white papers.

 

The Top 5 Reasons for Modernizing Your Electrical Safety Program

Updated safety standards provide opportunities to modernize your electrical safety program.

In your plant, there’s a good chance your facility’s electrical equipment is constantly being changed or updated (moves and adds) and maybe even improved. Thus, your electrical safety program should also address these changes.

In keeping up with new technology and evolving safety concerns, safety standards are periodically revised. Updated standards should be viewed as a benefit to facility and safety managers, bringing opportunities to modernized your electrical safety program and to stay up to date on existing trends in electrical safety.

Below, we outline the top five reasons for modernizing your electrical safety program:

1. Changes in standards.
If there’s ever a constant, it is change. The NFPA Standard for Electrical Safety in the Workplace (NFPA 70E), is updated every three years. While NFPA 70E isn’t adopted into federal law or OSHA regulation, but OSHA has a history of citing it as a best practice when electrical incidents occur.

OSHA’s general duty clause requires employers (your facility) to provide employees with a place of employment that is “free from recognized hazards that are causing or are likely to cause death or serious harm.” Because OSHA regulations are not frequently updated, they will often reference consensus standards (like NFPA 70E) as a best practice when issuing citations to the general duty clause.

Therefore, even though NFPA 70E is a voluntary standard, and compliance is not required by law, it effectively describes electrical hazards and best practices to mitigate them. Thus, failure to comply with this or similar guidelines can result in OSHA citations.

2. Training will always be important.
For any worker who may exposed to electrical hazards, training is key. Employees performing electrical work need to understand the requirements of the electrical safety program, including the ability to recognize electrical hazards, know safe work practices and the procedures for protection against these hazards.

Non-electrical workers should also be trained to identify electrical hazards and recognize when electrical work is being performed so they do not put themselves or the electrical workers at risk. Training should be ongoing—do not underestimate the importance of retraining. Workers leave, new workers are added, and sometimes people simply forget what they have learned or they may become complacent as tasks become routine.

Additionally, retraining is important if you consider the Normalization of Deviance phenomenon, which is described as “when people within the organization become so much accustomed to a deviant behavior that they don’t consider it as deviant, despite the fact that they far exceed their own rules for the elementary safety.”

3. Facility updates and new equipment.
Electrical equipment in a facility is often moved, added, or reconfigured to keep up with changing production demands. Often, these changes may include updates to safety technology. Thus, the electrical safety program should be updated to address those changes.

So, when new equipment is added, a circuit is moved, protective devices get replaced or settings are changed and, generally, when any electrical wiring or cables) are modified in any way, it’s time to update your arc flash hazard analysis and revisit the safety program.

Retrofits and additions to existing equipment or reconfiguration of lines, are also a great time to evaluate if new electrical safety technology can be incorporated and will signal it’s time to update the electrical safety program.

4. Near misses.
According to the National Safety Council, almost 75% of all accidents are preceded by a near miss. It’s important to document and record near misses, minor accidents and close calls, especially those that have the potential for injury.

The overall safety culture in the facility gets stronger when reporting near misses are encouraged and not punished. If it’s not reported, the opportunity to mitigate hazards by taking corrective actions, including updates to the electrical safety program, are missed.

5. Employee and facility worker expansion.
A modern electrical safety program is all about teamwork. When a facility’s employee base has grown and/or when shifts are added, it’s a good opportunity to take the time to update the electrical safety program to demonstrate to employees – new and old – that the safety culture is strong.

Converse to expansion, if a plant experiences a reduction in staff, or significant employee turnover, this can lead to employees being asked to do other tasks for which they may not be adequately trained.

Therefore, changes that also affect the workforce should be a reminder to revisit the electrical safety program to assure that all workers are not only properly trained, but understand their roles in advancing the safety culture.

3 Way IIoT Technology Benefits From Moore’s Law

IIoT and Moore’s Law and Their Relationship with Bandwidth

There are three ways IIoT technology reinforces Moore’s Law. Bandwidth is a key component of this reinforcement and is the foundation for current technological advances.

 

Moore’s Law predicted the technological advances that we are experiencing today, and bandwidth is helping to propel those advances forward, specifically for IIoT. Panduit’s white paper, “The Ubiquity of Bandwidth,” explains how Moore’s Law factors into IIoT network capabilities.

Moore’s Law

Gordon Moore is best remembered as a co-founder of Intel. But while he was the director of Research & Development at his previous employer, Fairchild Semiconductor, he authored a paper in 1965 titled, Cramming More Components onto Integrated Circuits. In the article, Moore predicted that the number of transistors contained within a semiconductor will double approximately every two years.

Moore’s Law is applicable along three axes:

Cost – The cost for many transistors drops by almost half with every reduction in the size of the transistors.

Performance – Processor speeds increase because the smaller the transistor, the faster it can operate. Additionally, the transistors become closer to each other which reduces the latency between them.

Complexity – For a given size, the number of transistors doubles with the reduction in feature size. This allows more complex implementations and circuitry.

Although all three aspects of Moore’s Law are important, it is the ability to implement ever-increasing complexity that might be the most important.

For example, if a smartphone was built using the semiconductor technology available in 1971, the phone’s microprocessor would be the size of a parking space. In fact, the communication theories needed for ubiquitous bandwidth evolved in the late 1940s and 1950s.

They could not have been implemented at that time, however, because it would have been impractical to build with vacuum tubes or discrete transistors.

IIoT Technology

IoT has captured product developers’ imagination. In the consumer space, it remains to be seen what applications will take hold, but wearables seem a certainty.

It is a similar situation on the factory floor as numerous deployment scenarios exist, but we will need some history for us to see which ones provide a suitable ROI.

Tracking packages, monitoring, and alerting applications are one thing. Implementing advanced analytics and complicated algorithms to extract meaning from IIoT data that has been gathered is something else.

None of this would happen without the ubiquity of bandwidth.

To learn more about bandwidth and why it’s essential for your IIoT network’s infrastructure, download Panduit’s “The Ubiquity of Bandwidth”  white paper – or subscribe to our blog to access our IoT “101” white paper series.

 

 

Julio Franco, (2015, April 20). “50 Years of Moore’s Law: Fun facts, a Timeline Infographic and Gordon’s Own Thoughts 5 Decades Later.” Techspot. [Online]. Available: https://www.techspot.com/news/60418-50-years-moore-law-fun-facts-timeline-infographic.html.

Gordon Moore, “Cramming More Components onto Integrated Circuits,” Electronics, volume 38, no. 8, 1965.

M. Patel, et. al. (2017, May 19) “What’s New with the Internet of Things?” McKinsey & Company. [Online]. Available: https://www.mckinsey.com/industries/semiconductors/our-insights/whats-new-with-the-internet-of-things.

Reduce the Risk of Arc Flash With a Reliable and Repeatable Repair and Preventative Maintenance Program

The importance of preventative maintenance programs can’t be understated. Especially when it comes to reducing the risk for arc flash. Accuracy and repeatability are critical to any machine operation, but that also applies to the preventative maintenance program itself. Facility and safety managers understand that repeatability makes work easier to implement.

Even the most conservative estimates say that there are up to five arc flash explosions occurring in electric equipment every day in the United States. Even more electrical incidents happen daily, but there are ways companies can significantly reduce the occurrence of these incidents to create a safer workplace.

Preventative maintenance can increase machine reliability, which decreases the need to access that equipment for repairs. This, in effect, increases overall plant safety when machines and equipment are operating as planned without the need for unscheduled maintenance. NFPA standard 70B outlines the best practices for setting up and maintaining an Electrical Preventive Maintenance (EPM) program. Additionally, the InterNational Electrical Testing Association (NETA) offers tremendous resources on preventative maintenance with their PowerTest Conference seminars.

An effective Electrical Preventive Maintenance (EPM) program helps avoid extra expenses, disruptions and potentially lost profits that may result from equipment breakdown or an arc flash. Typically, in setting up an EPM, it begins at the main service entrance and works its way through the electrical distribution system to automation and controls all the way to the machine level.

There are a variety of reasons why an arc flash may occur; it could be an accumulation of conductive dust inside an enclosure or purely equipment failure – likely the result of inadequate maintenance. In short, if electrical equipment is not maintained, then something is going to give.

An effective means of preventing electrical incidents and arc flashes is the anticipation and elimination of the conditions that may cause them. Spotting potential signs of an electrical failure include:

  • Identifying and repairing compromised insulation before it fails.
    Predictive maintenance systems can provide early warning of insulation degradation or failure. Visual inspections of the condition of insulation and electrical joints should be conducted whenever maintenance is performed.
  • Monitoring electrical equipment at critical joints including, lugs and compression fittings.
    Over time, heat cycles and vibration can loosen connections which can cause overheating and may lead to an arc flash. Thermal sensors can help monitor these critical joints.
  • Using infrared windows.
    Using infrared thermal scanning through IR windows enable technicians to perform scans without removing equipment covers or opening doors, lessening the likelihood of arc flash events caused by accidental contact and exposure.

It should go without saying, that before performing any electrical work in any form of maintenance, that it’s important to de-energize the equipment and verify that an electrically safe work condition has been established.

Verifying absence of voltage is important and the testing method to work on de-energized equipment must also be safe and effective. The electrical worker who conducts the testing needs to understand testing procedures and be repeatedly proficient with the testing devices.

Verifying the absence of voltage with the Panduit VeriSafe Absence of Voltage Tester before equipment is accessed makes it easy to verify that an electrically safe work condition has been established without exposure to hazards.

The results of having a reliable electrical safety and preventative maintenance program will reduce risk, minimize business interruptions and even extend the life of your plant’s electrical equipment.

Understanding Electrical Safety in Today’s Changing Landscape

Being able to identify electrical hazards and having tools, safety procedures and instructions available to mitigate risk is essential to ensuring safety.

 

It’s important to have a workforce that understands how keeping up with the times is paramount to staying safe in the workplace. Much can said about the importance of creating an electrically-safe workplace, but it is the responsibility of any employer to provide a safe environment, free of hazards to its employees.

In 2015, the National Fire Protection Association (NFPA) created an accreditation, the “Certified Electrical Safety Worker (CESW)” certification program, which was based on the most current edition of NFPA 70E, the Standard for Electrical Safety in the Workplace. The program ensures that electricians have the knowledge, training and experience to perform their jobs at the highest, safest level possible. Obviously, one key to safety during times of change is keeping aligned with consensus standards, which the NEC and NFPA updates every three years. Below are changes any plant might encounter and thus has a need to be prepared for.

VeriSafe – Absence of Voltage Tester

Changes in Standards
As safety standards evolve, so too must the company and its workforce. The latest release of the NFPA 70E-2018, includes updates that are essential for the company and its employees to understand. When NFPA 70E released its 2018 update, a new exception was included that allows Absence of Voltage Testers (AVTs) listed to UL 1436 to be used to verify the absence of voltage instead of a handheld voltmeter. Changes to consensus standards can take safety at a facility from good to great.

Changes in the Plant
When business grows, the facility grows. New machines are added, the electrical capacity needs grow, and thus an increased need for overall, plant-wide electrical safety grows. Sometimes, there can be an overcrowding in electrical rooms and production areas with added equipment. Other times, challenges are created when multiple suppliers of equipment create anomalies. While codes and standards evolve, and as equipment is added, there can be these compatibility issues. Standardizing processes and procedures can help minimize or prevent human error. Panduit provides solutions for the electrical infrastructure that can help bridge multiple equipment manufacturers or areas of equipment as additions take place. The VeriSafe Absence of Voltage Tester is compatible across many equipment types and manufacturers, provided the specifications have been met.

Changes in Plant Operations and Performance 
The rise in automation in plants today is proof that the robots are here. The qualified electrical worker meets all of the training requirements set by NFPA 70E and OSHA, and as a general rule, each qualified electrical worker may need several days of training each year to maintain the level of skill. It may be a good idea to plan for that training over a three-year period – which helps to ensure that the qualification process continues to track changing requirements. It’s possible that effective training may be something that is repeated in different formats periodically in order to keep if fresh and top-of-mind. This may toggle between classroom instruction, hands-on skills demonstration and audits.

New equipment brings new types of hazards and risks. Being able to identify these hazards and having tools, safety procedures and instructions available to mitigate risk is essential to ensuring safety. Perhaps even more game-changing than automation is the availability of connectivity and networking on the plant floor. This allows safety procedures to become more connected and integrated into workflow with the ability to track and log tasks, as well as access to video for training and recording purposes.

Why Your Electrical Infrastructure is Too Important Not to Be a Maintenance Priority

The electrical infrastructure of a building, including distribution and controls, is the heart of any facility.

 

Too often, electrical systems aren’t always given the maintenance priority they might deserve. Today, we understand the importance of why the electrical infrastructure is critical to doing business and why plant safety can be enhanced with a little thought and planning.

For the majority of electrical work that happens in a facility, including scheduled maintenance, de-energizing the system is the fundamental requirement for safety. The electrical infrastructure of a building, including distribution and controls, is the heart of any facility. Without a reliable source of electricity, production would not be possible. So, what can be done to make electrical system maintenance a priority?

Schedule regularly, avoid spontaneity.
Even with the critical nature of electrical equipment, regularly scheduled maintenance needs to be a primary focus. Facility managers don’t often think about maintenance until a disruption, like an equipment failure, occurs within the system.

Neglecting regular maintenance of electrical equipment, especially over a long period of time, may lead to a disruption in facility operations and possibly a damaging system failure or an incident. Reliable equipment will increase safety and decrease property risks.

Don’t overlook the obvious.
Electrical equipment, especially what modern facilities are installing today, is well-designed, it’s safe to operate and it generally has a long service life. By nature, electrical systems are usually hidden from sight.

Thus, when it’s out of sight, it’s out of mind – awareness may not be raised as long as lights turn on and everything operates as it normally would. Even new equipment requires a proactive maintenance and service program and then it needs to be inspected to ensure it is properly installed, functioning and can be well maintained.

The Electrical System Can’t Always Speak for Itself.
Though sensors and condition-based monitoring are becoming more and more common, particularly thermal monitoring of critical electrical infrastructure, a fair amount of electrical equipment in use today still can’t warn us when a failure is imminent.

It could be less disruptive to operations if workers could identify equipment that is about to fail, before the failure occurs, so proper steps could be taken to prevent or minimize the downtime impact to people, processes, equipment and operations.

Regular maintenance is required to ensure that equipment can be operated as expected. For example, contacts that are not regularly exercised have a tendency to stick, or not open at all, leading to longer clearing times than expected.

Plan for maintenance.
While de-energizing equipment is a fundamental requirement for electrical safety, de-energizing by its nature is disruptive to facility operations. Thus, it is best to anticipate and plan for maintenance.

A conscious plan for maintenance is far financially advantageous to the other option, when unplanned maintenance occurs when least expected. It also may be helpful knowing that a facility-wide shutdown is happening, so steps can be taken to ensure operational disruptions will be minimized.

Maintenance shutdowns have a cost and require planning, so it’s important to anticipate the need and even budget appropriately. If the facility does not have trained and qualified electrical workers to perform the system maintenance, then many qualified service companies exist and can offer these services.

Planned maintenance has the distinct advantage of making sure that experts can be present. Some equipment manufacturers can even be onsite to assist customers with large PM programs when maintenance is scheduled in advance and not unplanned.