Posts Tagged visual control

All I Really Need to Know about Lean I Learned at Waffle House [guest post]

Ok, so the title is a little overreaching, but so was, “All I really need to know about life I learned in kindergarten,” and that didn’t stop that email from being forwarded a few million times.

My learning experience began at about 4 a.m., while sitting at a Waffle House counter with my buddy. He was dozing in his seat.

No, we weren’t up early because we couldn’t wait to start the day’s kaizen. It was the weekend and we were at the end of our evening…but, I digress.

Sitting at the counter, I was unusually alert for the hour. My intensity came from a focus on getting some food into me.

The Waffle House had its usual pre-dawn crowd and the staff was seating tables as fast as they could clear the debris from the previous customers.

No sooner than I had given my order to the waitress, I heard her call it out to a cook who seemed to continuously throw food on the grill. He was in constant motion, never slowing down to ask for an order to be repeated.

I further noticed that the wait staff never gave the cook any written record of the order. Diners all have tickets on spinning wheels, right?! At least that’s the way they’re portrayed on TV.

And the cook never wrote anything down. Heck, he didn’t have any available time for writing.

“Oh great,” I thought, “I’m going to get something other than my precise culinary selection.”

Well, to my surprise, my plate showed up exactly as requested!

So, as I inhaled my meal, I watched the cook prepare 25-30 plates without once stopping to ask about an order. It was at this point that I began to seriously question whether or not I possessed the mental capacity necessary to be a successful Waffle House cook.

This sobering and burning question bothered me throughout the day. Now, no offense to Waffle House cooks, they’ve been very good to me over the years, but their pay grade doesn’t seem to square with super memory and perception powers…

Fast forward to the next week.  Still doubting that I would ever have the right stuff to be a Waffle House cook, I returned to the Waffle House to do what my sensei had taught me first – direct observation.

My direct observation was both fruitful and easy. Seems that the Waffle House employs quite a bit of standard work. It turned out, like with all good magic tricks, I had been fooled by watching all the motion (the cook) instead of what the assistant was doing. I found that the shukimi goes something like this:

  1. There are 3 operators working together – waitress, prep station operator, and cook.
  2. Upon taking an order, the waitress walks to a prescribed spot (there’s an X on the floor for good visual control) and calls the order out in a specific manner. This keeps multiple orders from being called at the same time and in fact is the single point for scheduling.
  3. Orders are called out one seat at a time regardless of the number of people at the table – single piece flow with 100% MTO as their finished goods strategy.
  4. As the waitress calls the orders, the cook grabs his tools (which are stored point of use with some good 5S) and pulls materials from his kanban (which has been stored with minimal packaging).
  5. While the cook is focused on getting the cooking started, it’s the prep station that is in fact capturing the details of the order. Here are some examples:
    1. One plate representing each order is queued up in order of receipt – FIFO
    2. “Kit” items are placed on the plate to indicate the specific details of the order. A jelly packet right side up means one type of toast while upside down means another.
    3. A single butter pack indicates one waffle, while two means two waffles.
    4. A single hash brown is laid on the plate in an orientation that indicates well done, smothered with onions, or some variety of ingredients.
    5. A slice of cheese on one side of the plate means hash browns scattered and covered. If the cheese has a different plate position, it calls for scrambled eggs with cheese.
    6. Plates are lined up on the buckboard until full. A full buckboard tells the waitress to stop calling orders for a few minutes and also tells the manager they may need a 2nd cook – a brilliantly simple application of visual management.
    7. The cook matches up the food on the grill with the order as defined by the visual on the plate. This drives standard presentation to the customer. Once completed, the cook signals for a pick-up. The waitress doesn’t need to ask which plates are complete as she can identify at a quick glance.

The Waffle House system is impressive in its simplicity and effectiveness. As for the writing-free environment, the cook can scan the plate line from a distance and understand requirements much more quickly that reading a written ticket. Bottom line, the Waffle House’s system eliminates a great deal of waste while expertly delivering on service level expectations.

While I am not likely to switch careers (though I am relieved that, if needed, I might be able to cut it as a cook), I do believe that there is an opportunity for Waffle House-like visual scheduling in many industries.

Just imagine if your operation’s make-to-order demand requirements could be flawlessly communicated throughout the value stream using only those items that are contained within the finished goods…like a home fry.

John Domagala authored this guest post. He has spent the last 25 working in manufacturing, most recently in the electronics industry. Trained as a Master Black Belt by GE and exposed to the Toyota Production System 8 years ago by Mr. Nakao, much of John’s focus is facilitating lean transformations.

Another related breakfast food post: Beyond Toast Kaizen – Lean Breakfast Concepts, Circa 1937 [guest post],

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Lean Listening

image from Wikipedia

Lean transformations might be easier if we possessed some measure of the sixth sense – extrasensory perception (ESP).

Of course, (sort of) like in the 1999 psychological thriller film, The Sixth Sense, we might be inclined to whisper repeatedly that, “we see concrete heads.” You know, that lean euphemism for folks who obstinately resist good change.

But, I’m guessing that five senses are more than enough for effective lean living.

Let’s see, as characterized by Aristotle, there’s the sense of sight, hearing, touch, smell, and taste. Clearly, they are most powerful when working in concert.

That said, many lean practitioners are usually fixated on the first sense – sight.

We talk about eyes for waste, shiny eyes, direct observation, visual management, visual controls, and line of sight. We want the abnormal to be easily discernible…typically through drive-by visuals.

Yup, for good reason, we love the visual stuff.

Touch is clearly important around work and motion – selection, differentiation, orientation, etc. and for identification of abnormal conditions (i.e., excessive machine vibration, out of spec parts, feverish patients).

The sense of smell is often underrated.

Our olfactory senses are useful for detecting a host of abnormalities (not just smelly co-workers), especially when working with things like machinery (is there an electrical short or bearing issue?), curing cycles, reactions, or assessing the cleanliness of an area, etc.

Taste? Well, there must be some lean application somewhere. Any lean bakers, chefs, vinters, or brewers out there? Especially brewers.

This leaves us with the sense of hearing.

There are musical andons, buzzers, sirens, bells, etc. But there’s more, right?

Yes, how about the sound of an operation and its rhythm or lack thereof? Is it operating within a certain cadence? Is it running to takt? Is it not running? Is there idling?  Frequent starts and stops? Is the noise level uncomfortable?

How about when we get to the health of machinery, equipment, and people (as in harmony)?

Like a car, can we tell when it just doesn’t sound right?

Value stream analysis requires mapping the flow of material and information. The flow of information, or lack thereof, is often manifested in audible signals. What do they reveal? Where are the opportunities?

There’s more.

What about what your co-workers are saying? Can we pick up on the intentional and unintentional clues that our people regularly sprinkle within the spoken word?

These are clues that point to:

  • Unsurfaced or unaddressed improvement opportunities. There are a bunch of key words that can indicate that there is an improvement opportunity – “duplicated effort,” “tiresome,” “painful,” “boring,” “repeat,” “fix,” “complicated,” “confusing,” “only person ‘X’ can do it,” “again,” “still,” etc. The lean leader’s attentive ears for waste should pick up on these words and then launch into the 5 whys with the person who uttered the words.
  • Unmet challenges for critical thinking. Think of this as something initiated by someone who either wants their supervisor to: 1) give them an answer, 2) take the monkey (a.k.a. problem) on their back, or 3) leave them alone. The verbal cues include the, “So, then I should do [accompanied by silence and a plaintive look begging the supervisor to give the answer]?” or the explanation that they are meeting roadblocks, but seem committed or forced to keep doing the same thing (what’s the definition of insanity, again?). Good lean leaders will begin to attack this stuff with open-ended questions, such as, “Well, what do you think you should do?”, “What’s your strategy for attacking this?”, “Why would you think that?”, “How do you know?”, along with some good 5 whys.
  • Accountability gaps. Then there are the folks who love using vague words like “hope,” “think,” “try,” “keep,” mixed with other squishy non-commitment related words for when they hope, think, will try to do, keep doing, whatever they were talking about. For example, “I’ll keep trying that.” Huh??? Well, first of all, it sounds like there may be a problem, possibly accompanied by a lack of critical thinking. See above. Second of all, once we converge on the right plan of action, we’ve got to figure out when it will happen, what constitutes success, etc. Lean leaders facilitate and demand accountability.

While we must listen for such words, we must do so with the aid of our eyes to provide context and insight from the individual’s body language.

And, of course, we must be listening for what is NOT said. Again, this is a prime opportunity to strategically use open-ended questions like, “How do you feel about that?”, and “What do you see?” Once the words begin to flow, the lean leader can take it from there.

Just as we develop our eyes for waste, we must tune our ears for effective lean listening.

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One last thing, according to Wikipedia, humans supposedly have at least five additional senses:  pain, balance, joint motion and acceleration, temperature differences, and direction.

I know I’ve had my share of lean-induced pain. But, as one man was wont to say (he was never at a loss for words), “Knowledge makes a bloody entrance.”

I’m hoping that in some strange calculus, I’m getting more knowledgeable every day.

Pass the band-aids.

Related posts: Book Review: How to Do Kaizen, Effective Visual Controls Are Self-Explaining, 6 Leadership Habits for Effective Tiered Meetings

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Scrunchie Lean

I never anticipated posting something about scrunchies (you know the decorative pony tail holding device) or quoting Coco Chanel. But, here I am.

Heck, it’s Friday, why not share something light about lean?

Truth be told, I LOVE really simple and creative applications of lean. Even better when it’s the voluntary work of a relatively new lean convert, like my friend Lisa.

During a recent kaizen activity, I took notice (how could I not, it was visual…AND functional) of Lisa’s laptop power cord.

Take a look at the following pictures. Note the visual differentiation of her plugged in cord versus that of others. It can be a drag trying to figure out what plug goes with what laptop. Do I pull this one, or that one, or…?

And, then there’s the challenge of wrapping up and stowing your power core (and adapter), if you have had the misfortune of losing your velcro strip or rubber band thingy. The scrunchie is an excellent and visually differentiating replacement.

Now I am not saying that the scrunchie is for everyone. I, for one, would feel a bit self-conscious using one (in my insufficient hair or as a power cord accessory), but we can probably all agree with the late French fashion designer, Coco Chanel:

Simplicity is the keynote of all true elegance.”

Related posts: Ineffective Visual Controls – 9 Root Causes, Effective Visual Controls Are Self-Explaining

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Cutting Edge Visual (and Sensory) Control

This past weekend I made a quick visit to see my parents. It was my mom’s birthday and a great opportunity to share some time with my ailing father. And there was a glimpse of some domestic lean

I was grilling steak and grabbed a knife to check the center. Yes, I know real cooks don’t do that. I am not a real cook.

Anyway, as I picked up the knife by the handle, there was something poking my hand. It was a twist tie!

I gave my mother an incredulous look. She explained.

Seems my father tends to put the wood handled knives in the dishwasher. High temp water bath and wood – not a good combination. So, my mother slapped a twist tie on the knife to remind him that it is not a candidate for the dishwasher (unless he’s the dishwasher).

Now, I usually prefer a more self-explaining control, but the gemba-based population within my folks’ house is pretty small. Overall, inventive and a little bizarre.

Visual and tactile control – zero dollars. Time with my folks – priceless.

Related posts: Effective Visual Controls Are Self-Explaining, Kaizen in the Laundry Room…and My Domestic Shortcomings

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Effective Visual Controls Are Self-Explaining

I’ve driven past the building pictured below well over a dozen times. It appears commercial in nature, but with the lack of descriptive visual controls, I had no idea, until now, what it is.

Commercial signage typically provides folks with more insight into the name and type of business. The lack of ABC information was driving me a bit crazy…which of course made me think about the self-explaining attribute of effective visual controls.

Among other things, gemba-based observers should be able to understand, unassisted, what a given object, process or system is. If relevant, a visual control should also share the subject’s purpose, and related operating rules, including a definition of the normal condition (and often, what to do in response to an abnormal condition).

…Back to ABC. Turns out it’s a liquor store (a.k.a. “package store”). Seems that in North Carolina, the Alcoholic Beverage Control (ABC) Commission controls the sale of alcoholic beverages in the state. There’s a bunch of ABC stores throughout the state.

It certainly was not self-explaining.

How many mysterious ABC’s do you have in your plant, office, lab or hospital?

Related post: Visual of the Visual?

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Airline Carrier’s Visual Management – Branding and LOL

Visual management is typically applied for the purpose of indicating process and system performance so that everyone can tell, at glance, whether the situation is normal or abnormal. Abnormalities should prompt an appropriate response.

Well, the low-cost South African airline Kulula, has taken a whimsical approach to visual controls. Actually, it’s a branding strategy with really nothing to do with lean thinking. But, it is pretty funny. Enjoy the pictures, below.

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How to Audit a Lean Management System

The lean management system (LMS) is an integral part of an effective lean business system. It’s critical to the development of a lean culture and the sustainability of hard-earned improvements. In simple terms, it is really hard to live SDCA (standardize-do-check-act) without it.

So, how can you quickly tell whether or not an organization’s LMS  (not to mention its lean effort) is the real deal or not? Well, no surprise – you audit it!

A well-developed LMS is, by its very nature, easily audited. And lean leaders should make it a point to do this on a routine basis. Here’s some quick and simple ways:

  • Leader standard work. Review samples of recently completed leader standard work. Check them for completeness, recurring issues and problems, and evidence of good lean thinking in determining countermeasures. And, oh by the way, if there aren’t any (or many) abnormal conditions identified, look at that with some professional skepticism. As the saying goes, “no problem is a big problem.”
  • Gemba walk. Walk the gemba with leader standard work in hand to determine its sufficiency and to observe, firsthand, the state of the gemba. When a senior leader conducts a gemba walk with his team, tag along. Observe whether they follow gemba walk standard work relative to attendees, timing, path, audit points and criteria, rotating “deep dives,” conclusion/reflection and countermeasures. Assess the thinking, understanding, participation, sense of urgency, evidence of improvement(s), coaching, chastising, questions, answers, etc.
  • Daily accountability meetings. Attend tiered meetings to determine the sufficiency of and adherence to the standard meeting agenda, while also assessing the level of the leader and the team’s engagement, understanding, lean thinking and real countermeasures, both immediate and planned.
  • Tiered meeting boards. Review the various supporting visual boards to assess the actionability, relevancy, timeliness of the performance measures and their trends. Also, check the type and status of the assigned countermeasures and employee suggestion activity, among other things.

A solid lean management system is “well-wired.” A lean leader should be able to quickly audit and discern whether the team, plant, division, office, etc. is practicing fake lean or is really and genuinely leaning forward.

Related posts: “So What?” – A Powerful Lean Question, Leader Standard Work – Chock that PDCA Wheel, Leader Standard Work Should Be…Work!

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Ineffective Visual Controls – 9 Root Causes

visitor badgeI just had an experience that prompted me  to think about the effectiveness, or sometimes lack thereof, of visual controls. Yesterday I was at a client site. No kaizen, just training. I was sporting a vistor’s badge (see picture), when one of  the class participants said something like, “Hey, you’re expired!” I came back with an intelligent, “Huh?”

It seems that the badge uses a time sensitive sticker that is white when the badge is first given to the visitor. After 24 hours or so it displays a red tiger stripe to indicate that it’s expired – meaning you need to show your ID and sign in again. Presumably, it’s a visual control to better identify the normal versus abnormal (unapproved) visitor.

Didn’t know that. I was walking around the facility for three days with my expired badge. I routinely walked right by the security folks and everyone else. No one said a word until the fourth day! Why didn’t the visually controlled badge  “work?” Why do visual controls fail consistently or intermittently?

Here’s my incomplete list of the root causes of ineffective visual controls (in no particular order):

  1. Introduced without training. Oftentimes new visual controls are deployed with nary a word to those who are supposed to manage them or respond to them. Stealth deployment is not successful.
  2. Not worker-managed. Visual controls are supposed to be worker managed. It’s silly to expect someone else (a supervisor or manager) who is not there real-time to reliably trigger a visual…in a timely manner. And it takes the worker out of the equation. So much for engagement and ownership.
  3. Not self-explaining. If a visual control cannot be immediately deciphered as to its purpose, operating rules and status, it ends up being a guessing game. No one has time for that and no one has a gemba decoder ring.
  4. Not visual/visible. Visual? What visual?  Some visual controls just are not very visual due to diminutive size, lack of color, poor location, etc.
  5. Too hard or complicated to use. Visual controls are designed to quickly, effectively and universally identify abnormal conditions so that those conditions can be addressed. They shouldn’t be adding muda. Visuals that are physically and/or intellectually a pain to maintain or trigger just won’t be reliably used.
  6. Obsolete. Sometimes the underlying system or process  is changed and the visual control is no longer used. Leaving it around is visual pollution and is confusing.
  7. Lack of discipline. It takes a level of discipline to maintain visual controls. Lean leaders must constantly reinforce their use and they should be an audit item within their leader standard work.
  8. Love of covert operations. Visual controls make things, well…visual. They promote an environment in which there are no secrets. For many reasons, some employees are not a big fan and purposely do not use the visual controls. Here, lean leaders need to hold folks accountable.
  9. Lack of faith. Oftentimes employees reliably maintain their visual controls and then give up when they determine that no one reliably responds to the abnormal conditions. Why the heck use a visual when no one seems to care?!  Apathy for abnormalities drive apathy for visual controls.

I’m guessing that I have missed some other root causes of ineffective visual controls. Any thoughts?

Related post: Visual of the Visual?

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Plan Vs. Actual – The Swiss Army Knife of Charts

swiss army knifeImagine that you were only allowed one chart (or board) at the gemba. What would you pick? What is the Swiss Army knife (I’m more of a Leatherman Multitool fan myself) of charts that gives you insight into process adherence and process performance?

For me, it’s the plan vs. actual chart – also known as the production analysis board (or chart), day-by-the-hour chart, etc. It is typically a paper chart (my preference) or dry erase board that is positioned at the pacemaker process. It’s refreshingly low-tech and reflects, at a minimum, the line, cell or team name, output requirements (number of picks, assemblies, invoices, etc.) for the day or shift, the related takt time, the planned hourly (or smaller time increment) and cumulative outputs for the day or shift, the actual hourly and cumulative outputs (or in some practices the cumulative deficit or surplus) and fields to record the problem or reason for any hourly plan vs. actual deltas as well as a sign-off by lean leader(s) as proof of review.

So, why is the plan vs. actual so powerful? Here’s 5 reasons.

  1. Communicates customer requirements. The chart reflects the demand, by type or product, quantity, and timing and sequence. It reflects a takt image.
  2. Forces the matching of cycle time to takt time. Standard work should dictate the requisite staffing (and related cycle time, work sequence and standard WIP) to satisfy the customer requirements.
  3. Engages the employee and drives problem-solving. Like any visual control worth its salt, the plan vs. actual is worker-managed in a relatively real-time way. It highlights abnormal conditions (hourly and/or cumulative shortfalls or overproduction) and drives self-correction or at least notification/escalation and containment. The plan vs. actual also spurs PDCA in that the worker is required to identify the root cause of the abnormal condition and ultimately points the worker, team and leadership to effective countermeasures.
  4. Focuses lean leaders within the context of leader standard work. A good plan vs. actual will have fields for team leader/supervisor sign-offs on the hour and managers twice daily. This is essentially proof of the execution of leader standard work in which the leader should ensure that the plan vs. actual is maintained real-time, is complete (i.e., no unexplained abnormalities), and that countermeasures are being employed in order to effectively satisfy customer requirements.
  5. Focuses associates and lean leaders within the context of the daily accountability process. The prior day’s plan vs. actual and trended performance (including pitch logs) should be reviewed within daily tiered meetings. These meetings help drive the identification of improvement opportunities and countermeasures at the individual, team and value stream level.

So, what’s your Swiss Army Knife chart and why?

Related posts: Leader Standard Work Should Be…Work!, Leader Standard Work – You can pay me now, or you can pay me later

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