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T&0 Regictnai Engineering <br />LAST External Inspection Checklist <br />LAST External Inspection Checklist <br />damage. <br />I <br />3 <br />Check with the operator to confirm that routine <br />E�iVIRONI�i�, u i� <br />testing of the overfill protection devices has <br />„ ,L 1 r - <br />been performed. <br />5.0 <br />J FLOATING ROOF <br />External floating roof inspections shall be conducted from gauger's platform and from walking on the roof itself. The <br />exception is If the floating roof is made of aluminum or if the space on the roof is a permit -required confined space and the <br />inspector does not have adequate certification ortrainIng to enter that s ace. <br />5.1 <br />GENERAL <br />E <br />OK <br />NA I <br />Comments: <br />1 <br />Look for indications of standing liquid on top of <br />the roof. (Large standing liquid areas on a <br />floating roof Indicate inadequate drainage design <br />(% <br />or, if to one side, a non -level roof with possible <br />leakinq pontoons.) <br />2 <br />Visually Inspect the floating roof top surface <br />1/ <br />Corrosion paint condition <br />i <br />3 I <br />Check proof legs (damage, and that they all are <br />t/ <br />finned at the same height). <br />4 I <br />If leg racks are present, check that leg <br />extensions are present in the racks. <br />5 <br />Check that any grounding / static bond cables <br />from the fixed roof to the floating roof or on the <br />Floating roof components are not frayed and are <br />roperly attached <br />6 <br />Are any portions of the topside of the floating <br />roof submerged or are Its legs collapsed? <br />7 <br />Are there any covers, lids, or seals that are not <br />closed? <br />8 <br />Inspect lightning shunts if applicable. <br />I <br />I <br />5.2 <br />LEVEL of FLOATING ROOF <br />E <br />OK <br />NA I <br />Comments: <br />1 <br />At several locations, measure distance from roof <br />rim to the top of the shell. A variance in the <br />distances indicates a non -level roof with possible <br />shell out -of -round, out -of -plumb, leaking <br />pontoons, or hang-up. <br />5.3 <br />GAS TEsrAsovE FLOATING ROOF <br />E <br />JOKI <br />Comments: <br />1 <br />Test For explosive gas in the vapor space above <br />the floating roof. High concentrations could <br />Indicate a leaking roof, leaking seal system, or <br />inadequate ventilation of the head space above <br />the internal floating roof. <br />5.4 <br />Rim SEALS <br />E <br />OK <br />NA I <br />Comments: <br />1 <br />Record the type of seal(s)I <br />d <br />2 <br />Inspect seals for holes tears oropenings. <br />v <br />3 <br />Inspect metallic parts for contusion and wear. <br />4 <br />Inspect secondary seals for signs of buckling or <br />indications that their angle with the shell is too <br />shallow. <br />5.5 <br />GUIDEPOLE A.K.A. GAUGEPoLE GAUGEPIPE WELLS <br />E <br />OK <br />NA <br />Comments: <br />1 <br />Record the number and type of each well <br />column gauge pole, ladder, auto au a etc. <br />2 <br />1 Does the caucle pole have a float inside? <br />I <br />3 <br />Does the gauce pole have a pole wiper? <br />I <br />I <br />4 <br />Check automatic gauge tape cable for wear or <br />fraying caused by rubbing on the gauge well <br />cover. <br />5 <br />1 Inspect well seals, <br />I <br />i <br />6 <br />Inspect the gauge pole for thinning, and record <br />the dimensions of the pole and its slots <br />7 <br />Inspect roof guide for gauge well, particularly <br />the condition of the rollers. <br />8 <br />Is the opening through the Floating roof <br />e uio ed with a gasket between the sliding <br />Revision Date: Cct2013 Page 6 of 9 <br />LTH <br />