You want to define a set of rules that assigns the characteristic
R phrases
of the value assignment type
Labeling
with the R phrase
R10 (Flammable
) and
R18
(
In use, may form flammable/explosive vapor-air mixture
) for substances with a flash point between 21 and 55°C. The
value assignment type
Flash point
can contain several data records, or in other words, it can be
assigned multiple values
. The R phrases are to be specified if at least one of the value assignments is between 21 and 55 °C.
Start the rule editor and create a new rule (see Using the Rule Editor ).
Under
Description
enter a description for the rule, for example,
Derivation of two R phrases from several flash points
.
In the
Condition (IF)
field, enter the first part of the condition:
21 <
.
From the overview tree choose the
Flash point
node for the value assignment type
Flash point
and assign it to the
Condition
(
IF
) field using drag & drop.
The condition field now contains the following: 21 < FLASH_POINT.
From the overview tree choose the characteristic
Value
from the value assignment type
Flash point
and drag it directly to the existing
FLASH_POINT.
entry using drag & drop.
Add to the condition in the
Condition
field so that it reads
21 < FLASH_POINT.VAL, FLASH_POINT.VAL < 55
.
From the overview tree choose the characteristic
R phrases
from the value assignment type
Labeling
and assign it to the
Left Expr.
field using drag & drop.
The internal fact key
LAB_R_PHRAS
appears in the
Left Expr.
field and the system automatically adds the operator
:=
to the
ToDo
field.
At this point it is not necessary to create a record in the same way as under 4. because only
one
data record is to be created for the value assignment type
Labeling
in which only the
R phrases
characteristic
is to be assigned multiple values.
Change the operator to
+=
because the
R phrases
characteristic is to be assigned multiple values.
From the overview tree choose the phrase
Flammable
under the characteristic
R phrases
from the value assignment type
Labeling
and assign it to the
Right Expr.
field using drag & drop.
The internal phrase key
"[#R10#]"
appears in the
Right Expr
. field.
Repeat steps 7 to 10 in the next line of the
List of Todos (THEN)
but in step 10, instead of assigning the phrase
Flammable
, assign the phrase
In use, may form flammable/explosive vapor-air mixture
to the
Right Expr.
field using drag & drop.
Save the set of rules.
See Using the Rule Editor .
When using this set of rules to determine secondary data, the EH&S Expert creates one data record for the value assignment type
Labeling
for substances whose flash point is between 21 and 55°C in at least one value assignment. In the value assignment, the characteristic
R phrases
is assigned the phrases
Flammable
and
In use, may form flammable/explosive vapor-air mixture
.
The rule file has the following structure:
FACTS |
||
LAB_R_PHRAS(OUT) |
||
RECORD FLASH_POINT(IN) |
||
VAL |
||
END |
||
;Rules |
||
RULES |
||
RULE NEWRULE1 |
||
DESCRIBE "Derivation of two R phrases from several flash points" |
||
IF 21 < FLASH_POINT.VAL,FLASH_POINT.VAL < 55 |
||
THEN |
||
LAB_R_PHRAS += "[#R10#]", LAB_R_PHRAS += "[#R18#]" |
||
END |
||
END |