CSSBB case studies
CSSBB · Put your knowledge to work in context.
The Six Sigma Black Belt (CSSBB) is a professional credential for people who lead quality improvement initiatives and want formal recognition for Six Sigma philosophy, the DMAIC model, and team leadership. It is aimed at practitioners who already have on-the-job improvement experience: candidates need three years of full-time, paid work in one or more areas of the CSSBB Body of Knowledge, plus either one completed project with a signed affidavit or two completed projects with signed affidavits. The CSSBB case studies are 5 cases and about 3,785 words.
1Chartering a Six Sigma Portfolio When Demand Exceeds Belt Capacity
Northline Plastics (injection molding, $85M revenue) has trained 12 Black Belts and 40 Green Belts over 18 months. Scrap and rework run 4.2% of sales; the CFO calls that number 'accounting fiction' and has capped program funding at Q2.
749 words, about 4 min2Three On-Time Delivery Numbers in the Same Monthly Pack
(industrial distributor, 41,000 orders per year) reports three on-time delivery figures in the same monthly pack: 94% (orders shipped by the date entered at order entry), 78% (shipped by the customer's original requested date), and 61% (delivered to the customer by the date they asked for). Sales commissions are tied to the 94% figure.
747 words, about 4 min3A Stalled Revenue-Cycle Team with an Absent Sponsor
Bayview Hospital's revenue-cycle improvement team has nine members from patient access, coding, billing, IT, and compliance. The charter targets a 30% cut in denial rework by June.
773 words, about 4 min4A Baseline Built on Three Definitions of Handle Time
TeleServe's average handle time (AHT) is 412 seconds in the ACD system, and a Black Belt is chartered to cut 40 seconds from it. Reviewing 30 recorded calls reveals: the ACD clock excludes after-call work for the outsourced vendor, which handles 35% of volume; QA counts a transfer as a new call; two supervisors coach to different definitions of handle time; and a 30-call attribute agreement study among three reviewers yields 71% agreement where chance agreement is about 45%.
739 words, about 4 min5A Yield Gain That Decayed After Handoff
At Cascade Chemicals, a Six Sigma team raised first-pass yield on Line 2 from 91.4% to 94.5% during a six-week pilot. Three months after handoff, yield is 91.8%.
777 words, about 4 min