A calibration log will be maintained for each instrument. Each reading will be recorded on the Confined Space Entry Permit. If the confined space has gas levels within safe limits, employees may proceed into the confined space. While employees are in the confined space, atmospheric testing shall be performed at least every hour or continuously if employees have an indication that continuous sampling is warranted. Entry into the space is not permitted until results are within the safe range.
Continuous monitoring is required for the detected gas or oxygen deficiency.
Under certain conditions, entry into dangerous atmosphere spaces may be required. Only those specially trained in the use of self-contained breathing apparatus will be allowed in these spaces. A rescuer going to the aid of an employee who is in a confined space must determine the extent of assistance required by the victim. Emergency rescue into a confined space may be necessary and will only be performed by personnel trained for performing entry rescue operations. If telephone service is not readily available, immediately notify the Service Desk via radio for assistance in contacting Police.