In this video, you will learn how to perform statistical calculations: mean and standard deviation on Casio fx991-MS Calculator.
[Read more…]Using Casio FX 991 MS Calculator for Statistical Calculations
Articles
Find all articles across all article series listed in reverse chronological order.
A Systematic Process of Data Collection
Article first posted at Conscious Reliability by James Reyes-Picknell, Jesus Sifonte, and team.
Condition Monitoring – A Closer Look
By Jesús R. Sifonte
Condition Monitoring is a broad term referring to the systematic process of data collection for the evaluation of asset’s performance, reliability and maintenance needs with the purpose of planning repair works. Its main purpose is Potential Failures finding. It requires the collection of good asset’s health data which trending is studied. The primary advantage of Condition Monitoring is that it incorporates health indicator monitoring activities performed while the machine is operating. Assets failures are predicted well in advance of their occurrence. It allows for planning repairs safely and economically for the plant. Also, machine parameter data trending allows extending assets operation as close as possible to their actual useful life. Condition Monitoring data provides vital information for taking important decisions affecting plant operation goals. Maintenance decisions are taken based on the actual asset condition avoiding unnecessary repairs leading to start up failures. Catastrophic failures of a critical assets presenting accelerated wear trends can be avoided by using C tasks too. Sometimes operating conditions changes causing components life expectance to reduce as noted by steeper indicators trends leading to unexpected catastrophic failures. This can be detected by CM and earlier planned shutdowns can avoid such disasters.
[Read more…]Maintenance Planning and Scheduling Secrets
Maintenance Planning and Scheduling can be learnt on the job, but to become a very good maintenance planner and maintenance scheduler you still need to know the reasons behind why you do things in certain ways when you plan and schedule maintenance work orders.
[Read more…]Simplified Risk Management for Small Organizations
Guest Post by Patrick Ow (first posted on CERM ® RISK INSIGHTS – reposted here with permission)
Smaller organisations, especially those with less than 100 people, often struggle with putting in place the right-size effective risk management practices that do not take up too much of their time and resources.
What I have often seen and experienced is that small-size organisations implement the ‘standard’ risk management practices that are commonly found in larger organisations without much thought as to whether it is fit-for-purpose to enable better organisational performance given their unique context or operating environment.
[Read more…]Mastering Lubrication Excellence
Building a World-Class Lubrication Program
In the industrial landscape, the humble lubricant might seem inconspicuous, but it plays a pivotal role in ensuring the smooth operation of machinery, reducing friction, and extending the life of critical assets. Achieving lubrication excellence isn’t just a matter of choosing the right oil; it’s about developing a comprehensive program that encompasses the best practices, advanced technologies, and a culture of precision. In this blog, we will explore the methods to build a world-class lubrication program that’s the cornerstone of operational success.
[Read more…]Unveiling the Kano Model of Customer Satisfaction
In the ever-evolving landscape of engineering and design, strategic frameworks play a pivotal role in deciphering the intricate dynamics of customer satisfaction. Consider, for example, the Kano Model of Customer Satisfaction, brainchild of management science professor, Noriaki Kano. This model offers a nuanced approach to understanding the diverse aspects of customer satisfaction, making it a valuable tool for engineers and design professionals as they transition from problem definition to ideation and prototyping. [Read more…]
Trevor Says…
- Do we need to follow all the rules?
- Are meetings worthwhile?
- Why does equipment fail in service?
Read Trevor Kletz’s answers to these questions:
[Read more…]If it Ain’t Boeing, Are you Still Going?
Boeing is really having a bad stretch. Or more specifically, the passengers flying in its 737 MAX aircraft are.
Most recently a ‘plug’ flew off the side of Boeing 737 MAX 9 plane in flight, leaving a refrigerator sized hole next to startled (but mercifully still living) passengers. A ‘plug’ is a panel that seals up a hole in the fuselage that is included during manufacture to allow an optional emergency exit to be installed.
This failure is not a good look … especially for a three-month-old plane. Lots of manufacturers of different machines throughout history have been able to successfully bolt panels to cover holes of a similar size to that of an aircraft emergency exit. It is not hard to do. Nor is it hard to have systems in place to make sure it is done right.
What is the FINESSE Fishbone Diagram?
FINESSE is a fishbone diagram, a mnemonic, and a mental model. FINESSE stands for Frame, Illustrate, Noise Reduction, Empathy, Structure, Synergy, and Ethics. Systems thinking as applied to effective communication is the cornerstone of FINESSE. We’ll briefly explore these aspects in this article.
FINESSE as a Mnemonic
Acronyms are a subset of mnemonics that use the first letter of each word to create another memorable word. FINESSE is both an acronym and a mnemonic. [Read more…]
Measuring Employees’ Fears and Effects
In the previous article, I shared how employee fears can negatively influence the work culture of your organization, stifling innovation, hampering collaboration, limiting growth and preventing continuous improvement. In this, the second article of a 3-part series, I’ll share the elements of an effective tool to evaluate your organization for employee fears and the impact of those fears.
[Read more…]Physics of Failure
First parts fail, then machines stop! If its parts don’t break your machines and equipment will always be reliable
Physics-of-Failure microstructure science explains why components fail, and why they get failed during service life. Understanding Physics-of-Failure is foundational to the Plant Wellness Way EAM methodology
[Read more…]Communication and Consultation in ISO 31K Risk Management
Guest Post by Peter Holtmann (first posted on CERM ® RISK INSIGHTS – reposted here with permission)
This article is the ninth of fourteen parts to our risk management series. The series will be taking a look at the risk management guidelines under the ISO 31000 Standard to help you better understand them and how they relate to your own risk management activities. In doing so, we’ll be walking through the core aspects of the Standard and giving you practical guidance on how to implement it.
What if Ships Cohorts Were Random?
The Kaplan-Meier reliability estimator is for dead-forever products or parts, given individual lifetime data or a “Nevada” table of periodic ships cohorts and their grouped failure counts. This estimator presumes that ships cohorts are NOT random. Production, sales, installed base, and cohort case counts are random! What does that do to Kaplan-Meier reliability estimates? What is the nonparametric reliability function estimator if ships cohorts are random?
[Read more…]10-Year Incident Analysis…Still Going Wrong
It is hard to imagine but only a few years ago not everything was on the internet. Google was established in 1998 and as search became prevalent, there was an explosion of online for anyone to access.
From 2008-2010, I went through exercise of collecting and analyzing incident data from 2000-2010 with help from Dr. Amy Liu. Mostly downstream – refineries and petrochemicals.
[Read more…]Introduction of Copper Sheathing
Between 1670 and 1700, the Royal Navy installed lead sheets over the hulls of some ships to help preserve them and reduce repairs. (See Failure Modes of Lead Hull Sheathing Explored by the Royal Navy.) Galvanic corrosion attacked the iron bolts holding the hull and rudder together, so the program had to be canceled.
The British reverted to their previous practice of installing thin wood sheathing on top of the main hull. The wood sheathing was sacrificial and had to be replaced every few years. When the sheathing was stripped for replacement, inspection and repair of the main hull was accomplished.
[Read more…]