The Difference Between Bump Testing and Calibration of Gas Detectors
Bump testing is a process carried out to ensure a detector is reading to the anticipated tolerance and sets off the appropriate warning indicators. This is a simple process which can be carried out with a low level of training and does not encompass any calibration activity.
The only items needed to carry out a bump test are:
- Disposable bump test gas cylinder
- Cylinder regulator, hose and detector cap
The process of bump testing a fixed gas detection system can be thought of as the equivalent of carrying out regular tests on a fire alarm system. .
Why Bump Test a Fixed Gas Detection System?
While there is much written on how and why one should bump test portable detectors, there are few articles which discuss fixed systems.
Bump testing a fixed gas detection system involves largely the same principles. Users should carry out testing out a random detector of their fixed detection system every week or month, much as they would with a fire system. This action offers a number of advantages for the end user:
- Assurance that the system is effectively detecting the target gas
- Increased confidence
- Enables the site to exercise its Safe Operating Procedures (SOPs) in a manner aligned with the fire system
- Offers early alerts for any problems
During bump testing of detectors, each site will need to develop an appropriate SOP to follow.
This is important. as an example the most effective method for a laboratory complex to follow will differ from that which is appropriate for a waste recycling site or plant room. All applications have their own requirements. It should be noted that bump testing is not a replacement for periodic calibration and service visits, and these should still be carried out.