5 Why Analysis Archive

5 Why Root Cause Analysis (RCA) – One Point Lesson (OPL)

5 WHY Analysis is the key tool used to determine ROOT CAUSES for the Phenomenon identified in the CHECK Phase of CAP-Do. The 5 Why analysis begins with the Summary of the Phenomenon from the 5W 1H analysis. The first “why?” originates from the Summary of the Phenomenon. The

Why Why Analysis

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1. 5W1H Who+What+When+Where+Which+How Classify the problem according to the 5Ws and 1 H explaining characteristics and trends 2. Understand the structure Flashlight definition diagram 3. Understand the principle and basic rules Principle The filament generate light due to heat Basic rules (Main rule) The filament has to receive an

Human Error or Lack of Knowledge

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After completing Breakdown Analysis, one of the outcomes will be Human Error or Lack of Knowledge, meaning breakdown occurred due to: no Standard Operating Procedures (SOP) or Training Process Guide (TPG) in place equipment setup instructions were missing or poorly expained OEM training wasn’t completed for all maintenance technicians (mechanics, millwrights, electricians