96-023 Ordinance - Laserfiche WebLink

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enter a permit-required confined space. This pemut verifies completion of items listed below. This permit shall be kept at the job site for the duration of the job. If circumstances cause an interruption in the work or a change in the alarm conditions for which entry was approved, the employees must be removed immediately from the space, and a new Confined Space Entry Permit must be completed. B. Surveillance. The surrounding area shall be surveyed to avoid hazards such as drifting vapors from tanks, piping or sewers. C. Testing. The confined space atmosphere shall be tested to determine whether dangerous air contamination and/or oxygen deficiency exists. A direct reading gas monitor shall be used. Testing shall be preformed by the entry supervisor who has successfully completed the training for the monitoring equipment he/she will use. The minimum parameters to be monitored are oxygen deficiency, LEL and hydrogen sulfide concentration. The test results shall be recorded on the Entry Permit, and kept at the work site for the duration of the job. Affected employees shall be able to review the testing results. The most hazardous conditions shall govem when work is being performed in two adjoining, connected spaces. D. Space Yentilation. Mechanical ventilation systems, where applicable, shall be set at 100 % outside air. Where possible, open additional manholes to increase air circulation. Use portable blowers to augment natural circulation if needed. After a suitable ventilating period, repeat the testing. Entry may not begin until testing has demonstrated that the hazardous atmosphere has been eliminated. E. Entry Procedures. The following procedure shall be observed under any of the following conditions: - Testing demonstrated the existence of dangerous or deficient conditions and additional ventilation cannot reduce concentrations to safe levels. Attachment D