Best Practices for Bump Testing With Disposable Gas
A gas detector can look ready for work and still miss a dangerous atmosphere. That’s why a quick function check belongs at the start of a shift, not after a warning sign appears. Bump testing shows whether a detector responds to a known gas and activates its alarms. A few careful habits can make that check more dependable. Keep reading to explore the best practices for bump testing with disposable gas.
Know What a Bump Test Checks
During a bump test, you expose the detector’s sensors to a test gas at a concentration that should trigger its alarms. Watch for the expected sensor response and confirm the audible alarm works. Check any visual or vibration alerts the instrument uses, too.
A successful bump test confirms basic sensor response, but it doesn’t prove measurement accuracy. Only a calibration check or full calibration can address that question.
Choose the Right Gas
Match your disposable calibration gas to the detector’s sensor configuration and the manufacturer’s testing requirements. Before opening the valve, check the cylinder label for the correct mixture and concentration.
The wrong concentration may fail to trigger an alarm even when the detector works properly. Never rely on a cylinder past its expiration date, even when it still contains gas.
Connect Equipment Carefully
A compatible regulator helps you deliver the flow rate your detector requires. Inspect tubing and the test adapter for cracks or loose connections before you start. Follow the instrument manual when you attach the adapter and apply gas. Keep the gas flowing for the prescribed interval so each sensor has time to respond.
If you use disposable calibration gas in the field, store cylinders according to the supplier’s instructions. Protect their valves from damage and carry the right regulator for each cylinder connection.
Test Before Work Begins
Bump test portable monitors before each day’s use, following the manufacturer’s directions and your facility’s procedures. Repeat the check after an impact or another event that could affect sensor performance. Record each result using your team’s system so a failed test doesn’t disappear between shifts.
If the monitor fails, take it out of use and perform a full calibration according to the manufacturer’s instructions. If the monitor still fails, remove it from service and arrange repairs.
Build Confidence Before Every Shift
Following best practices for bump testing with disposable gas starts with choosing the right mixture and maintaining a consistent procedure. When you treat a failed test as a warning, you help protect the people who depend on those monitors.
MESA Specialty Gas offers disposable calibration gas in portable cylinders, along with compatible regulators for various applications. If you’re reviewing your bump-testing setup, contact MESA Specialty Gas for help choosing the right gas mixture and cylinder for your needs.