Measured Value-Reference Value Comparison (SAP Library - Industrial Hygiene and Safety (EHS-IHS))

Measured Value-Reference Value Comparison

Use

If the agent you want to assess is a measurable variable, a suitable analysis method is the measured value-reference value comparison. With this method, you compare the measured values you entered in the amounts function with the corresponding reference values in the SAP EH&S specification database.

If the agent to be assessed is a mixture of substances or a combination of single-substance agents, you should use the analysis method summated rating.

Integration

The result of the measured value-reference value comparison is taken into account when the main rating is calculated.

Prerequisites

Customizing

For the system to be able to read the reference values from the specification database, for each measurement item you must specify in Customizing for Industrial Hygiene and Safety in the IMG activity Specify Measurement Items which value assignment type and characteristic of the property tree the reference value is in. For more information, see the documentation for the IMG activity.

Application

You must have entered the relevant measurements (amounts) and reference values in the system.

Features

Search for existing amounts

Only those amounts you entered for the agent appear.

Automatic determination of the reference value

When you select an amount, the system automatically determines the corresponding reference value from the specification database in the background and places it beside the amount.

Automatic or manual rating assignment

You can use the This graphic is explained in the accompanying text Rating pushbutton to let the system calculate the rating automatically or assign the rating manually.

You can overwrite the ratings determined by the system.

The user exit responsible for automatic determination is ANLS_RATCP, whose determination routine you can adapt to suit your requirements. The function module CBIH_LB31_COMPUTE_RATING included with the standard system determines the rating according to the following routine:

The system first checks whether a threshold value exists for the respective agent and measured value in Customizing for Industrial Hygiene and Safety under Specify Measurement Items. If it does, the system checks whether the measured value is greater than or equal to the threshold value. If it is, the corresponding rating is displayed as the result of the calculation.
If the measured value is less than the smallest threshold value or no rating exists, the quotient is formed from the measured value and the reference value. This quotient is compared with the threshold that was entered in Customizing under Specify Exposure Ratings and the rating is determined from this. The rating is assigned when the thresholds are exceeded.