Define acceptable minimum and maximum measurement values for the equipment. When inspection aspect measurements exceed acceptable values, Datastream 7i automatically generates work orders to correct the problems. Also, specify the standard work orders or PM work orders to use at that time.
Follow these steps to define equipment aspect inspection points.
Open the Monitored data form (IMMONT).
Query for the equipment or category for which to establish values.
Click the Aspect points tab. Datastream 7i displays the Aspect points page.
Aspect—Click to select the aspect to associate with the equipment or category.
Point type—Click to select the point type to associate with the equipment or category.
Point—Click to select the point to associate with the equipment or category.
Nominal value—Enter the standard value against which to measure inspection aspects.
UOM—Click to select the unit of measure used for the selected inspection aspect.
Method—Click to select the method of inspection for the selected inspection aspect.
Confidence rating—Click to select the confidence rating for the inspection results. Define confidence ratings on the Codes page of the Entities form (BNENTS) for the CRAT entity.
Formula—Click to select the formulas required to calculate minimum and maximum values.
Extreme value—Enter the minimum and maximum extreme values for measurement readings under the Minimum Threshold and Maximum Threshold headings.
Critical value—Enter the critical values under the Minimum Threshold and Maximum Threshold headings.
Tolerance (%)—Enter the tolerance percentages under the Minimum Threshold and Maximum Threshold headings.
After inspection results are approved, Datastream 7i calculates the dates when the critical value and the tolerance will be reached using the following two regression analyses. Datastream 7i uses the worst case from these two calculations:
Least square method
Extrapolation of last two measurements
Standard WO and PM—Click to select either an existing standard work order or a PM schedule. Datastream 7i generates the work order when the inspection results reach the critical value or tolerance.
|
Select a PM work order only when the aspect is time dependent. When the aspect is not time dependent, select a standard work order. Datastream 7i generates the order when the minimum or maximum values are excluded. If you enter a PM schedule, Datastream 7i sets the due date on the corresponding PM work order for the equipment with the date on which the critical value was reached. When more than one inspection point refers to the same PM work order, the due date of the work order will be when one of the aspects has reached a critical value. Perform this calculation only when the aspect time dependency is either Linear increasing (LI) or Linear decreasing (LD). |
Choose File | Save from the menu bar. Datastream 7i saves the information to the database.