Chemical Storage Segregation: Reading the Compatibility Matrix
Which chemical classes must never share a bund, how to size secondary containment, and the SDS sections that actually change how you store a drum.
Salauddin Ahamed Sagar
Super AdminOperations Research Consultant
Salauddin Ahamed Sagar is an Operations Research Consultant focused on data-driven decision making across manufacturing, textiles, and industrial operations. He works with organizations to apply optimization, statistical analysis, and process engineering principles to improve efficiency, reduce cost, and strengthen supply chain performance.
27 published articlesbd.linkedin.com/in/salauddinahamed
AQL 2.5 in Practice: Reading the Sampling Table Without Getting It Wrong
How to pick the right sample size and acceptance number, what AQL does not promise, and the four mistakes that turn a passing inspection into a rejected shipment.
Pneumatic Circuits for Production Engineers: Cylinders, Valves and the Cost of Air
How to size a cylinder and its valve properly, and why compressed air is usually the most expensive utility in the plant per unit of work delivered.
Johnson's Rule and What to Do When It Does Not Apply
A two-machine flow shop has an exact optimal sequence you can compute by hand in minutes. Three machines does not. Here is the rule, the extension, and the dispatching heuristics for everything else.
Choosing an Analytics Stack for a Mid-Sized Manufacturer
A practical decision framework for factories with an ERP, several disconnected machine systems, and a finance team that lives in Excel. Spoiler: the answer is rarely the most impressive tool.
Cutting Room Efficiency: Marker Planning and the Two Per Cent That Pays the Rent
Fabric is 55 to 65 per cent of garment cost. A two-point improvement in marker efficiency is worth more than most sewing floor projects, and it costs almost nothing to implement.
Decision Trees and Expected Value: Choosing Between Two Capacity Investments
A structured way to compare a large irreversible investment against a smaller staged one, including how to price the option to wait and how to test whether your answer survives your assumptions.
Primary, Secondary, Tertiary: Packaging Decisions That Move Landed Cost
Cube utilisation, case count and pallet pattern usually matter more than the price of the carton itself. A structured way to evaluate a packaging change end to end.
Access Control and Visitor Management in Export-Oriented Factories
Layered physical security, the audit evidence buyers actually ask for, and how to run a visitor process that satisfies compliance without adding twenty minutes to every arrival.