Comments on: Calculating Rolled Throughput Yield (RTY) http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/ Lean Manufacturing, Six Sigma, Lean Six Sigma, and Kaizen Sat, 12 May 2012 15:25:36 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Jitendranath http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-7376 Jitendranath Mon, 16 Jan 2012 05:11:39 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-7376 Benchmarking for RTY is completely depend on the type of process(Manufacturing,IT services,Software). Setting a benchmark without considering all the factors involved is meaningless. One company should not set Benchmarking by considering other companie's Benchmarking. Because taking benchmarking value is an output(or a result) so we should not manage our service based on output of other company. We need to set benchmark based on our KIPVs..or causes This leads to Continual Improvement. Ideally every company should set benchmark as 100% or in Quality terminology...a 3 Sigma or 6 sigma capability. Jiten IBM Benchmarking for RTY is completely depend on the type of process(Manufacturing,IT services,Software).
Setting a benchmark without considering all the factors involved is meaningless. One company should not set Benchmarking by considering other companie’s Benchmarking.
Because taking benchmarking value is an output(or a result) so we should not manage our service based on output of other company. We need to set benchmark based on our KIPVs..or causes
This leads to Continual Improvement.
Ideally every company should set benchmark as 100% or in Quality terminology…a 3 Sigma or 6 sigma capability.
Jiten
IBM

]]> By: harry Hills http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-4941 harry Hills Tue, 21 Sep 2010 15:14:45 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-4941 How about Test operations... How would I measure RTY for test operations? If I have 35 test operations and 2 assemblies that need testing; Would I measure each assembly as it passes through the 35 tests? For instance; if I measure two assemblies and assembly one passes test one through 26, but then fails test 27. Assembly two passes the first 15 tests, but fails test 16, 21, 23 and 27. What is my RTY? 100% for tests one through 15, 50% for 16 through 20 then 15% for tests 21 and 22, then 12.5 % for test 23; then 6.25% for test 25 and finally 3.125% for test 27?. How about Test operations…

How would I measure RTY for test operations? If I have 35 test operations and 2 assemblies that need testing; Would I measure each assembly as it passes through the 35 tests? For instance; if I measure two assemblies and assembly one passes test one through 26, but then fails test 27. Assembly two passes the first 15 tests, but fails test 16, 21, 23 and 27. What is my RTY? 100% for tests one through 15, 50% for 16 through 20 then 15% for tests 21 and 22, then 12.5 % for test 23; then 6.25% for test 25 and finally 3.125% for test 27?.

]]> By: Santiago http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-4259 Santiago Mon, 08 Feb 2010 22:19:15 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-4259 Yes, my question its more focused on the actual collection of the data, since it has several processes, i need to have one person on each process just collecting the data? since the actual operator will be busy with his operation. Thanks! Yes, my question its more focused on the actual collection of the data, since it has several processes, i need to have one person on each process just collecting the data? since the actual operator will be busy with his operation.

Thanks!

]]> By: Ron Pereira http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-4258 Ron Pereira Mon, 08 Feb 2010 22:13:06 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-4258 Hi Santiago, assuming you have different processes within the cell you would simply calculate the yield at each process and then multiply them together as described in the article above. Make sense? Hi Santiago, assuming you have different processes within the cell you would simply calculate the yield at each process and then multiply them together as described in the article above. Make sense?

]]> By: Santiago http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-4257 Santiago Mon, 08 Feb 2010 22:09:39 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-4257 How do i establish a method to measure RTY in a cell? How do i establish a method to measure RTY in a cell?

]]> By: Top 10 LSS Academy Articles in 2009 (Pageviews) | Lean Six Sigma Academy http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-4044 Top 10 LSS Academy Articles in 2009 (Pageviews) | Lean Six Sigma Academy Fri, 18 Dec 2009 12:56:14 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-4044 [...] Calculating Rolled Throughput Yield (RTY) [...] [...] Calculating Rolled Throughput Yield (RTY) [...]

]]> By: Bill http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-3942 Bill Mon, 02 Nov 2009 16:14:17 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-3942 is RTY designed to measure the odds of just a piece part passing during a sequence of operations or can it be used to meaure the odds of an assembly and it's related sub assemblies passing? IE if I have a production cell that builds 5 sub assemblies that comprise 1 compelte unit, can I use RTY to tell me how my cell is performing? The examples I have seen always talk about a part going from one process to the next and parts either being reworked or scrapped or passing. That is simple to understand, my example is more complex as there are hundreds of parts in the completed unit. Would you recomend that I substitute each of my sub assemblies for a "process" and multiply the passing % of each subassy times each other to get RTY? How would I include tests on the completed unit? thanks. is RTY designed to measure the odds of just a piece part passing during a sequence of operations or can it be used to meaure the odds of an assembly and it’s related sub assemblies passing? IE if I have a production cell that builds 5 sub assemblies that comprise 1 compelte unit, can I use RTY to tell me how my cell is performing? The examples I have seen always talk about a part going from one process to the next and parts either being reworked or scrapped or passing. That is simple to understand, my example is more complex as there are hundreds of parts in the completed unit. Would you recomend that I substitute each of my sub assemblies for a “process” and multiply the passing % of each subassy times each other to get RTY? How would I include tests on the completed unit? thanks.

]]> By: Lusi http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-3926 Lusi Thu, 22 Oct 2009 18:05:24 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-3926 Hello All, could you tell me how can i improve RTY if most of defects are caused by defectived parts (provided from supplier, for example parst which lead to leakage) or functional defects ? Hello All,

could you tell me how can i improve RTY if most of defects are caused by defectived parts (provided from supplier, for example parst which lead to leakage) or functional defects ?

]]> By: Ron Pereira http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-3846 Ron Pereira Fri, 04 Sep 2009 22:03:40 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-3846 Good question, Sergio. I'd probably split them. So we'd have a RTY for parallel process 1 + series system and then a RTY for parallel process 2 + series system. Make sense? Good question, Sergio. I’d probably split them. So we’d have a RTY for parallel process 1 + series system and then a RTY for parallel process 2 + series system. Make sense?

]]> By: Sergio Lopez http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/comment-page-1/#comment-3843 Sergio Lopez Fri, 04 Sep 2009 21:52:44 +0000 http://lssacademy.com/2007/09/12/calculating-rolled-throughput-yield-rty/#comment-3843 Whats if the processes are in parallel and then feed into a series system? Whats if the processes are in parallel and then feed into a series system?

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