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M ft <br />Attachment <br />(Tank/Piping Removal) <br />ON-SITE WORK PLAN <br />FOR TANK/PIPING REMOVAL AND EXCAVATION <br />Removal of Flammable Vapors and Removal of Tanks <br />Removal of flammable vapors and removal of tanks will be performed in accordance with the <br />requirements of Local Regulatory Agencies. The following are general guide lines. <br />A review of available codes, standards, and recommended procedures produces the following <br />consensus: <br />A. All possible sources of ignition must be kept from impacting the tank or the area in <br />which flammable vapors may reside during excavation or after removal. <br />B. Drain and flush all piping into tank. Flammable or combustible free standing liquid <br />production stock will be removed from the tank prior to removal. Avoid spilling <br />product on the ground during disconnection of the tank from its associated lines. <br />C. - Vent lines should not be sealed and should be cut last. Keep all sources of ignition <br />away from vent lines as well as tanks. <br />D. Once all liquid has been removed from the tank, any tank with flammable vapors in <br />excess of 10% of the LEL or 5°/i oxygen will be purged with dry ice (CO). Thirty <br />pounds of dry ice per 1,000 gallons of tank capacity is added to render the tank <br />inert, All piping except the vent pipe should be disconnected. <br />Emergency Services <br />The address and telephone number of the local hospital, ambulance and medical emergency room <br />should be prominently posted. In addition, the telephone number of the fire department/rescue <br />unit should be posted. <br />General information regarding emergency services may be found on front page. <br />