{"id":13415822,"url":"https://github.com/joelparkerhenderson/value-stream-mapping","last_synced_at":"2026-01-24T02:33:51.711Z","repository":{"id":148894009,"uuid":"75219539","full_name":"joelparkerhenderson/value-stream-mapping","owner":"joelparkerhenderson","description":"Value Stream Mapping (VSM) tutorial (work in progress)","archived":false,"fork":false,"pushed_at":"2023-09-15T19:40:21.000Z","size":5,"stargazers_count":27,"open_issues_count":0,"forks_count":4,"subscribers_count":3,"default_branch":"main","last_synced_at":"2024-08-05T01:07:30.253Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/joelparkerhenderson.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":"CODE_OF_CONDUCT.md","threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null}},"created_at":"2016-11-30T19:26:33.000Z","updated_at":"2024-08-05T01:07:30.253Z","dependencies_parsed_at":null,"dependency_job_id":"785edf61-0adc-4f03-8799-134168c6cf09","html_url":"https://github.com/joelparkerhenderson/value-stream-mapping","commit_stats":null,"previous_names":["joelparkerhenderson/value_stream_mapping"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/joelparkerhenderson%2Fvalue-stream-mapping","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/joelparkerhenderson%2Fvalue-stream-mapping/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/joelparkerhenderson%2Fvalue-stream-mapping/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/joelparkerhenderson%2Fvalue-stream-mapping/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/joelparkerhenderson","download_url":"https://codeload.github.com/joelparkerhenderson/value-stream-mapping/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":239412488,"owners_count":19634016,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-07-30T21:00:52.362Z","updated_at":"2025-11-03T05:30:25.193Z","avatar_url":"https://github.com/joelparkerhenderson.png","language":null,"funding_links":[],"categories":["Developing the right things the right ways"],"sub_categories":[],"readme":"\u003c!--\n  * browser: value-stream-mapping\n  * tracker: f44c30d1b876f8987cf78c727e573542\n  * version: 1.3.0\n  * updated: 2018-02-24T03:07:25Z\n  * contact: Joel Parker Henderson (http://joelparkerhenderson.com)\n  * options: commentable\n--\u003e\n\n# Value stream mapping (VSM)\n\nValue stream mapping is a lean-management method for analyzing the current state and designing a future state for the series of events that take a product or service from its beginning through to the customer. \n\nContents:\n\n* [VSM links](#vsm-links)\n* [VSM wordbook](#vsm-wordbook)\n* [VSM metrics](#vsm-metrics)\n* [VSM types of waste](#vsm-types-of-waste)\n\n\n## VSM links\n\n* [Wikipedia](https://en.wikipedia.org/wiki/Value_stream_mapping)\n* [Value stream mapping for non-manufacturing by Martin](http://www.slideshare.net/AMEConnect/value-stream-mapping-for-non-manufacturingmartinreplacement)\n\n\n## VSM wordbook\n\n* Value Adding (VA): any activity that your external customers value, and would be willing to pay for.\n\n* Necessary Non-Value Adding (N NVA): any activity that is necessary but does not add value, for example any necessary support processes, legal regulatory requirements, etc.\n\n* Unnessary Non-Value Adding (U NVA): any activity that is unnecesssary, a.k.a. waste.\n\n\n## VSM metrics\n\nIn order of importance.\n\n* Value Time (VT)\n\n  * The time spent on adding value. This is actually performing the work.\n\n* Process Time (PT)\n\n  * A.k.a. touch time, work time, cycle time.\n\n  * The time it takes to actually perform the work, if a person is able to work on it fully and focus on it fully.\n\n  * Include task-specific doing, talking, thinking, etc.\n\n* Lead Time (LT)\n\n  * A.k.a. throughput time, turnaround time, elapsed time.\n\n  * The elapsed time from when the input to a step is available, until the step is compeleted i.e. the work is sent along to the next step.\n\n  * Include Process Time, not just the waiting time.\n\n* Percentage Activity (%A)\n\n  * Calculate (PT / LT) * 100\n\n* Input Percentage Complete \u0026 Accurate (%C\u0026amp;A)\n\n  * The percentage of inputs that are fully usable, i.e. that are complete and that are accurate, as measured by the person receiving the inputs.\n\n  * Similar to \"first pass yield\" in manufacturing.\n\n* Rolled first pass yield (RFPY)\n\n  * A.k.a. %Clean, %C\u0026amp;A for stream\n\n  * Calculate %C\u0026amp;A * %C\u0026amp;A * %C\u0026amp;A ...\n\n  * The percent of value stream output that goes through the process cleanly, i.e. without any need for rework.\n\n* Number of Handoffs (#HO)\n\n* Number of IT Systems (#IT)\n\n* Freed capacity\n\n\n## VSM types of waste\n\n* Overproduction\n\n* Inventory\n\n* Waiting\n\n* Over-processing\n\n* Errors\n\n* Motion (people)\n\n* Transportation (material, data, etc.)\n\n* Underutilized people\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjoelparkerhenderson%2Fvalue-stream-mapping","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjoelparkerhenderson%2Fvalue-stream-mapping","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjoelparkerhenderson%2Fvalue-stream-mapping/lists"}