Blast Upgrades for Refuge Chambers
Most MineARC Chambers offer a static 5psi overpressure as standard; however, can be upgraded to a rating as high as 15psi, or based on client requirements. A blast rating upgrade includes the following:
^ Additional 100mm x 50mm upright stiffeners
^ Additional lateral stiffeners
^ Fully enclosed rear housing for componentry protection
^ Changes to material
^ Changes to the external chamber profile
MineARC has the engineering capabilities to perform in-house blast analysis calculations on all refuge chambers and safe havens. In addition, third party testing can be performed by professional blast engineers at an additional cost.
As part of an in-depth analyses, third party blast engineers will develop building damage level (BDL) curves in order to test the performance of a MineARC chamber, taking into consideration the orientation of the unit with respect the explosion source.
In addition, blast engineers can also calculate the occupant vulnerability (OV); the percentage of personnel within the chamber that could sustain fatal injuries at different levels of building damage.
A blast shield protection upgrade includes the following:
^ Polycarbonate window protector
^ External protection for AC and mine air
^ Protection for lights and sensors