RKI Instruments GD-K71D - Manual (Page 33)

PT2E-1052
32
６−２−２．Counteraction at gas alarm
Reaction to leak gas
The counteraction at gas alarm shall follow to the client rule and immediate reaction shall be
required.
Generally, the following action is taken.
①Confirmation of indication value.
②Based on gas alarm control concentration, it keeps the safety by keeping away people
from the monitoring area.
③When gas concentration display is continued, close the gas valve and confirm that gas
concentration gets lower enough.
④Suppose that the leak gas is to remain and provide yourself with protection attire and tool
away from danger, go to the leak site and check the gas residual condition by portable gas
detector.
⑤After checking that there is no danger, the treatment for gas leak shall be taken.
６ − ２ − ３ ． Gas alarm possibility except the case of gas
detection
It may respond to interference gas
For interference gases, contact the nearest agent or Riken Keiki.
It may be caused by drifting due to the change of long time elapsed sensor
Check the reading by daily check and make calibration through authorized service agent
whenever necessary.
It may be caused by the noise generated from spherical machine
Revision of installation location, wirings and the addition etc. of noise measure parts
between instrument and detector shall be required. This specific measures shall differ
from the condition of each site.
It may receive a temporarily noise such as by thunder lightning etc.
When the cause and effects are understood, the measure for surge according to the
condition can be taken.
＊ NOTE
Instantaneous gas leak may get lower at confirmation time.
Except gas alarm, it gets alarm condition temporarily by noise or any other
accidental conditions.