Location: TWS No A3-24   - SCBA set was refilled recently, however, the pressure gauge is still showing nil/Zero pressure. It should be recalibrated soon.  - There is only one SCBA set available at TWS no A3-24 where the micro-tunneling operation is ongoing. Always 2 SCBA set should be available where the micro-tunneling operation is ongoing.
Hazard category: Confined Spaces