Shigella sonnei (the most common species in the U.S.) Shigella flexneri; Shigella boydii; Shigella dysenteriae; The transmission of most Shigella infections is caused by the bacterium passing from stools or soiled fingers of one person to
System maintenance. One advantage of the septic tank/absorption field system is that it has no moving parts, but it does require maintenance. Annual inspections of your septic system are recommended to ensure that it is working properly and to determine when scum and sludge in the septic tank should be cleaned out.
1 To ensure that all protective and safety equipment and materials required in the safety, ALARA, and radiation accident or overexposure response procedures are available. 2  To ensure that a program of regular maintenance is in place for all industrial x-ray equipment used at the facility.he Management of Radiation Protection and Safety Section specifies the responsibilities of stakeholders which are key in the management of radiation protection and safety relevant to industrial x-ray equipment.