EXIN LSSA Black Belt Practical case studies
EXIN LSSA Black Belt Practical · Put your knowledge to work in context.
The EXIN LSSA Black Belt Practical is a Lean Six Sigma certification listed under the EXIN certification catalogue, positioned at the Black Belt level with a practical orientation. This page is written for candidates who found the credential name through a search engine, a training provider, or a job advertisement and want to understand what they are signing up for before paying for a course or booking a seat. The EXIN LSSA Black Belt Practical case studies are 5 cases and about 4,516 words.
1Gage R&R on a Safety Characteristic Before PPAP
A Tier-1 brake supplier must certify Cpk ≥ 1.33 on a critical bore diameter (10.00 ± 0.10 mm) before PPAP submission in three weeks. Because the measurement is effectively destructive, a nested Gage R&R was run: 30 parts, 3 operators, 2 trials per part, with part-to-part σ = 0.040 mm, repeatability σ = 0.008 mm and operator σ = 0.005 mm.
790 words, about 4 min2Two-Supplier Reject Rates and an Underpowered Comparison
A contract manufacturer of infusion sets is qualifying two visual-inspection suppliers for the same connector. Over one quarter, Supplier A shipped 37 rejects in 1,200 inspected lots and Supplier B shipped 26 in 1,200; a two-proportion test returns p = 0.16.
821 words, about 4 min3Resolution V Screen with Confounded Curvature
A coatings plant screens five factors for adhesion strength (target ≥ 4.5 N/mm, baseline mean 3.9 N/mm): A oven temperature, B line speed, C coat weight, D die gap and E ionizer voltage, using a 2^(5−1) design with generator E = ABCD. The 16 runs were randomized within two days; three centre points were added but, because of scheduling, were all run last, immediately after a planned maintenance and with a new batch of coating.
984 words, about 5 min4Takt Time, the Real Constraint and a Misplaced SMED Event
A pump assembly value stream has demand of 18,400 units per month over 20 working days, two shifts of 450 available minutes each. Current state: CNC machining 42 s cycle with three changeovers per day of 90 minutes each; welding 61 s cycle on a single machine, 92% uptime and 4% rework that must be re-welded; a wash step that processes batches of 300; assembly 55 s; final test 48 s.
936 words, about 5 min5An SPC Chart That Signals Every Afternoon
After a six-month DMAIC project, fill-volume variation on a bottling line fell from σ = 2.8 ml to σ = 1.10 ml against a 500 ± 6 ml specification, and the team reports Cpk = 1.82. The control plan specifies an Xbar-R chart with subgroups of five consecutive bottles pulled every two hours, with limits frozen from a 25-subgroup baseline of the improved process.
985 words, about 5 min