Show TOC

Function documentationTime-Sensitive Material Locate this document in the navigation structure

 

This functionality refers to materials having physical or process characteristics directly impacted by time exposure affecting end product viability. Examples are composite and moisture-sensitive materials used during various assembly and fabrication production processes in the high-tech, aerospace, automotive, and life sciences industries. Time-sensitive materials require special management and monitoring. This functionality is aimed at capturing and tracking the time associated with the shelf life and floor life of materials that are sensitive to environmental conditions.

In Material Maintenance, operators specify that material is time-sensitive and define the shelf life, which is the maximum time, in minutes, hours, days or months, over which a material may be stored without losing any chemical or physical properties and remain suitable for consumption or assembly. Operators define the floor life, which is the maximum time that an exposed material can remain usable while exposed to environmental variables such as temperature or relative humidity (see Material Maintenance).

Activities

When an operator working in the POD assembles a component defined as time-sensitive, the system prompts the operator to check this component out of a controlled environment. Once the user performs checkout, the clock starts decreasing the floor life time attribute. The system captures the checkout date and time and starts consumption of floor life units for the selected inventory ID. To stop calculating floor life for the component, the operator performs check-in. The system captures the check-in date and time and stops consumption of floor life units for the selected inventory ID. However, check-in does not stop the shelf life clock. Checkin resets the Current Time Out Clock to zero for the selected inventory ID. Current Time Out is the current elapsed time, in minutes or hours, exposed to the atmosphere for the entire SFC number comprising the maximum elapsed exposure time of any single active inventory ID included within this parent SFC number (see Time-Sensitive Material Check In/Out).

The following hook point activities are associated with TSM functionality:

  • Check Time Sensitive Components

    Checking out the TSM component is not permitted in the system if the maximum shelf life has been exceeded. To avoid this error while an operator is working in the POD, the Check Time Sensitive Components hook point activity can be placed as a PRE_START or PRE_COMPLETE hook point at an operation or resource to determine that one or more TSM components have exceeded their shelf or floor life and to prevent the processing of an SFC number if any TSM component has expired.

  • Stop Time Sensitive Clock

    If it is required to stop time measurement clocks for all TSM components used at a particular operation, the Stop Time Sensitive Clock hook point activity can be placed as a PRE_COMPLETE hook for the operation. This hook stops both shelf life and floor life clocks for the SFC number and all of its associated time-sensitive materials. This causes time accumulation to stop during processes such as completion or move to scrap and also causes the SFC number and its assembled components to no longer be considered time-sensitive.