Quotes About Bottlenecks

What you have learned is that the capacity of the plant is equal to the capacity of its bottlenecks," says Jonah.

We need a process," he says. "That's obvious. It's too bad that the five-step process that we developed turned out to be false. No . . . Wait a minute Alex, that's not the case. At the end, the problem was not wandering bottlenecks. It was insufficient protection for the existing bottlenecks. Maybe we can use that five-step process?

Bottlenecks temporarily limit throughput. Maybe your plant is proof of that. But they have little impact upon inventory." "It's completely the opposite, Hilton," I say. "Bottlenecks govern both throughput and inventory. And I'll tell you what my plant really has shown: it's proved our performance measurements are wrong.

You mean make them into non-bottlenecks," says Stacey. "No," he says. "Absolutely not. The bottlenecks stay bottlenecks. What we must do is find enough capacity for the bottlenecks to become more equal to demand.

Look, we give sales a rigid lead time for each product. So if it's not in finished goods, those are the numbers they should use to promise to clients. Yeah, they deviate from it, but not by much. Maybe there should be another way. Maybe the quoted lead times should be done case by case, according to the load on the bottlenecks. And maybe we shouldn't regard the quantities required as if we have to supply them in one shot.

What my people and I have done is to examine daily the queues in front of the assembly and in front of the bottlenecks— we call them 'buffers.' We check just to be sure that everything that's scheduled to be worked on is there—that there are no 'holes.' We thought that if a new bottleneck pops up it would immediately show up as a hole in at least one of these buffers.

And it became even more interesting when we realized that we were visiting the same six or seven work centers every time. They're not bottlenecks, but the sequence in which they perform their jobs became very important. We call them 'capacity constraint resources,' CCR for short.

Don't you realize that we've concentrated our improvement efforts too narrowly? We tried so hard to improve our bottlenecks, when what we should do is improve the CCRs as well. Otherwise we'll run into an 'inter-active' bottleneck situation. "See, the key is not in the hands of the materials people. If interactive bottlenecks emerge, chaos is inevitable; we'll have to expedite all over the place.

The key is in the hands of production. These techniques to manage the buffers should not be used just to track missing parts while there is still time, they should be used mainly to focus our local improvement efforts. We must guarantee that the improvements on the CCRs will always be sufficient to prevent them from becoming bottlenecks.

First, make sure the bottlenecks' time is not wasted," he says. "How is the time of a bottleneck wasted? One way is for it to be sitting idle during a lunch break. Another is for it to be processing parts which are already defective—or which will become defective through a careless worker or poor process control. A third way to waste a bottleneck's time is to make it work on parts you don't need.

If Ralph can determine a schedule for releasing red-tag materials based on the bottlenecks, he can also determine a schedule for final assembly. Once he knows when the bottleneck parts will reach final assembly, he can calculate backwards and determine the release of the non-bottleneck materials along each of their routes. In this way, the bottlenecks will be determining the release of all the materials in the plant.

By running non-bottlenecks for "efficiency," we've built inventories far in excess of demand.

With the bottlenecks more productive now, our throughput has gone up and our backlog is declining. But making the bottlenecks more productive has put more demand on the other work centers. If the demand on another work center has gone above one hundred percent, then we've created a new bottleneck.

To manipulate the immune system, you need to find the key bottlenecks that govern the system. The T-cell is an absolute bottleneck.

We have to shift the social model from a lot of formal protections toward loosening bottlenecks in the economy.

Wilke subscribed to the principles laid out in a seminal book about constraints in manufacturing, Eliyahu M. Goldratt's The Goal, published in 1984. The book, cloaked in the guise of an entertaining novel, instructs manufacturers to focus on maximizing the efficiency of their biggest bottlenecks.

Priorities are fundamental to politics because of inevitable information bottlenecks: these bottlenecks can be transformed by rare good organisation but they cannot be eradicated.

We aim to encourage investments that ease our supply-side bottlenecks, such as rural roads, cold-storage, and grain-warehouses, which will also help us combat inflation.

12. Identify your key constraints: Determine the bottlenecks or choke points, internal or external, that set the speed at which you achieve your most important goals, and focus on alleviating them.

With a lot of the things that seem scalable, you will find bottlenecks you never imagined that you suddenly need to find solutions for.

A critical part of the Second Way is making wait times visible, so you know when your work spends days sitting in someone's queue—or worse, when work has to go backward, because it doesn't have all the parts or requires rework.

In hindsight, we now know that WIP is one of the root causes for chronic due-date problems, quality issues, and expediters having to rejuggle priorities every day. It's

For physical goods, the twentieth-century limits to choice were based on three distribution bottlenecks—you could only buy things that passed all of the three tests: 1. The products were popular enough for manufacturers to make. 2. The products were popular enough for retailers to carry. 3. The products were popular enough for you to find (via advertising or prominent placement in stores near you). As Amazon showed, the Web could help with the latter two, right out of the gate.

I found out that the idea of the Internet as a highly distributed, redundant global communications system is a myth,'' he discovered. "Virtually all communications between countries take place through a very small number of bottlenecks, and the available bandwidth simply isn't that great.