Everybody interested in MRP has seen Orlicky's book as a reference work. This book compliles it's work plus all the developments of this technique since its issue in the fifties. The beauty of this work is that it gathers all the pitfalls, successes and fails encountered by the "MRP crusades". It also contends about the realationship between MRP and JIT and it's possible combination.

I am the system administator at my company. Out of frustration at many problems we have been having with the MRP module of our integrated system, I looked for a good source of knowledge about how MRP *should* work. In Orlicky's MRP I found that source. Orlicky's MRP is probably one of the best written books on the subject that I've seen. I had no trouble at all understanding the complex concepts that were presented, despite my lack of MRP knowledge and experience. Indeed, during the time that I read the book, I discovered that there were several things we were doing wrong because we didn't have a good understanding about the way MRP should work. For example, for a long time we had been laboring under the fallacy that a released work order should increase allocations not only for the primary components of a parent but also for the components of those components! Orlicky's MRP set me straight, stating that mistaking the Planning phase of MRP for the Execution phase (or vice-versa) was a common problem. I will never have that problem again thanks to this book. Another thing I learned from this book was how the bill of material, MRP, and backflushing were interrelated. This book is an excellent manual for those who wish to learn more about MRP, and it's a good source to refer to when looking for answers about why your MRP system isn't performing well.

I want to study "The detail logic of material requirements planning".