project deep dive

Paper Flow Control
& Supply Assurance Tool

End-to-end visibility system tracking the full paper supply chain — from purchase order to production consumption — built after a real production stoppage exposed a critical gap in supply chain visibility. Result: zero stockout-related production stoppages.

2018 – 2021 Project Manager – Operations Quadgraphics Colombia 0 production stoppages post-launch Excel + VBA + SQL
0

stockout-related stoppages after launch

12wk

max lead time managed

5

flow stages tracked end-to-end

waste & scrap reduction

the production stoppage

A real production halt caused by paper stockout made the problem impossible to ignore. The root cause wasn't a procurement failure — it was a visibility failure. Nobody had a clear picture of how much paper was in transit, how much was in warehouse, how much each active job would consume, or when the next delivery was actually arriving. With lead times up to 12 weeks and global disruptions like the Suez Canal closure compressing supply windows unpredictably, the gap between what was ordered and what was available in time could stop the plant entirely. This project was the structural answer to that problem.

gap 1 — in-transit blind spot

Paper ordered from international suppliers had lead times of up to 12 weeks. There was no system tracking what was in transit, what port it was at, or when it would realistically arrive at the plant — only the original purchase order date.

gap 2 — consumption mismatch

Planned paper consumption per job didn't match actual consumption. No reconciliation between what production said it would use and what it actually used — leading to phantom inventory and incorrect reorder calculations.

gap 3 — no consolidated view

Purchase orders, warehouse stock, in-transit inventory and production consumption existed in separate places — nobody could see the full picture at once. Decisions were made with incomplete information.

external risk factor

Global supply chain events — including the Suez Canal closure — could add weeks to lead times with no warning. A system relying on fixed lead time assumptions had no way to adapt when those assumptions broke down.

paper_flow_tracker.xlsm — end-to-end visibility
stages tracked per paper reference / supplier
01
Purchase Order
PO issued to supplier. Reference, quantity, agreed lead time logged.
order tracking
02
In Transit
Shipment status, port location, ETA updated. Adjusted for delays.
⚠ highest risk stage
03
Warehouse Receipt
Physical arrival logged. Quantity verified vs. PO. Discrepancies flagged.
inventory update
04
Job Allocation
Paper assigned to specific production orders. Correct reference matched to each job spec.
consumption planning
05
Actual Consumption
Real usage recorded per job. Planned vs. actual reconciled. Waste and scrap tracked.
optimization loop
typical lead times managed by the tool
local supply
~2wk
1–2 weeks
regional import
~4–5wk
4–5 weeks
overseas import
up to 12 weeks
8–12 weeks
⚠  Global disruptions (Suez Canal closure, port congestion) could extend lead times beyond estimates with no warning — making real-time transit tracking non-negotiable, not optional.
01 / waste reduction

Scrap & Trim Tracking

Actual waste per job logged and compared against standard allowances — exposing which jobs or machines were generating above-average scrap and why.

02 / cut planning

Format & Cut Optimization

Paper format assignments reviewed against job specs to minimize offcuts — ensuring rolls and sheets were allocated to jobs that maximized utilization of each reference.

03 / reference matching

Correct Paper per Job

Each production order matched to the exact paper reference it required — preventing substitutions that caused quality issues or inflated consumption of scarce grades.

01 / interface

Excel + Advanced Formulas

Excel as the primary interface — structured workbook with tabs per flow stage, cross-referenced with array formulas to keep all views consistent from a single data entry point.

02 / automation

VBA Macros

Macros handling data validation, automatic alerts when stock fell below safety thresholds, and consolidation of daily updates from production and warehouse into the central tracker.

03 / data source

SQL / ERP Integration

Direct queries to the ERP database for purchase order status, warehouse movements and production job data — eliminating manual re-entry and keeping the tool in sync with operational reality.

Zero stockout-related production stoppages after the tool was deployed — the plant never stopped due to paper shortage again.
Full end-to-end visibility of the paper supply chain in real time: from purchase order through transit, warehouse, job allocation and actual consumption in one consolidated view.
Better purchase timing and quantities — procurement decisions backed by actual consumption data and realistic transit ETAs instead of fixed lead time assumptions.
Reduced waste and scrap — planned vs. actual reconciliation exposed consumption inefficiencies that had previously been invisible, enabling targeted corrective action.
Resilience to external disruptions — the in-transit tracking layer meant global supply chain events (port delays, route changes) could be absorbed with advance replanning rather than emergency responses.
key takeaway

Production stoppages don't happen because companies run out of paper — they happen because nobody could see it coming. This project solved a visibility problem masquerading as a procurement problem. By building a system that tracked every kilogram of paper from the supplier's floor to the production job that consumed it — including real-time transit status across suppliers with 12-week lead times and exposure to global disruptions — the tool turned a reactive firefighting process into a structured, data-driven supply assurance system.