The following is a Table of Definitions for the articles describing the Vortex technology.

#

Item Description

Variable

Formula / Explanation

1

Flow Time for WO1 through WCN-1

tWO1, n-1

2

Transit Time for WO1 from WCN-1 to WCN

tT,N-1,N

This is a constant value entered by admin staff.

3

Remaining Clear Time of the WO in process at WCN with the least remaining Clear Time.

tR,N

4

Sum of the Clear Times for WCN of all WO's in its queue.

QN

5

Sum of the Clear Times at WCN for all authorized UA WOs

YN

6

Number of capacity units within WCN

CN

This is a constant value entered by admin staff.

7

Remaining Clear Time at WCN-1 for the WO with the least remaining Clear Time

tR,N-1

8

Sum of the Clear Times for WCN-1 for all authorized UA WOs in the WCN-1 queue.

tQ,N-1

9

Number of capacity units within WCN-1

CN-1

This is a constant value entered by admin staff.

10

Batch Size

B

This is a constant value entered by admin staff. If the WO will not be serially split, the B is equal to the WO # Units.

11

Number of Operations within the WC for a given WO

ON

This is a constant value based on the WO’s Work Flow, or Routing.

12

Clear Time

tC

the elapsed processing time required for a WO to complete the first operation in a WC.

13

Flush Time

tF

The elapsed processing time required for a WO to complete all operation subsequent to the first operation. 

14

Max Split Ratio

RC

15

Flow Time Ratio

R

The ratio of Flow Time to Standard Process Hours in a balanced line.

16

Clear Time for WCN for WO1.

WN

- the elapsed processing hours required to complete WO1 from start to finish at a given WC. This is Clear Time + Flush Time. If a WC has a single operation, Flow Time is equal to Clear Time, and R=1.

17

WCN Queue Policy

XN

18

WO Quantity

# Units

This is a property of the WO that is initially provided with the WO details, but may change if defects arise during production.

19

Standard Hours per Unit

HPU

This is a property of the WO that varies per WC and represents the total standard work hours per unit for the WC.

20

Operation Hours per Batch

OHPB

 

21

WO Flow Time

WOFT

22

WO Standard Hours

WOSH

23

Queued Hours

Q

Sum of Flow Times for all WOs in a WC Queue.

24

UA Authorized Hours

Y

Sum of Flow Times for a WC of all WOs with open PTs at UA WCs.

25

Workflow

 

refers to the sequence of defined operations required to convert raw materials into a finished unit. This is also commonly known as a routing.

26

Work Center

WC

an organization of resources that facilitates the performance of an operation or plurality of operations in a production Workflow.

27

Work Order

WO

refers to a set of similar units to be processed as a group at a WC.

28

Upstream Adjacent

UA

refers to a WC that is next prior to a given WC in a Workflow, i.e, WCN-1 would be UA to WCN.

29

Pull-Tag

PT

is a work authorization property assigned to a WO. Work may be performed on a WO if, and only if, a PT has been assigned to it and the PT is in an Open state.

30

Work Order One

WO1

the WO that is UA, has been assigned the highest priority relative to other UA WOs, and not yet assigned a PT.

31

Work Center N-1

WCN-1

the WC in which WO1 is queued.

32

Balanced Line

 

a sequence of processing operations, each of which requires the same time to complete.

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