Inspection of Aboveground Storage Tanks. Rectangular Concrete-Encased Tanks (Section 8-5.3) Monthly External Inspection OM OM OM (Identified as P in Table 8-2): Visually inspect tank supports, anchors and anchor bolts, overfill valve and alarms, normal vent, emergency vent, leaking valves, fittings or other components. In addition the exterior concrete must be visually inspected for cracking, degradation, excessive calcareous deposits or signs of damage. Monthly Leaking valves, fittings or components must be repaired immediately or isolated to prevent further discharge. Any other deficiencies or irregularities noted must be repaired as soon as possible or as required depending on the nature of the defect (See for an example of the STI SP001 Rectangular Standard Monthly Inspection Checklist).. Tanks Annual External Inspection OM OM OM (Identified as P in Table 8-2): A more detailed examination of the tank and appurtenances must be Annually performed on an annual basis (See for an example of the STI SP001 Standard Annual Inspection Checklist). Formal External Inspection SM SM SM (Identified as E in Table 8-2): A formal external inspection must be As established conducted by certified STI SP001 by SCP based on inspector. tank size and category listed in Tables 8-1 and Formal Interior Inspection 8-2 (Identified as I in Table 8-2): A modified formal internal inspection as defined in manufacturer’s instructions or STI SP001
Inspection of Aboveground Storage Tanks. Rectangular Concrete-Encased Tanks (Section 8-5.3) Rectangular Tanks Monthly External Inspection (Identified as P in Table 8-2): Visually inspect tank supports, anchors and anchor bolts, overfill valve and alarms, normal vent, emergency vent, leaking valves, fittings or other components. In addition the exterior concrete must be visually inspected for cracking, degradation, excessive calcareous deposits or signs of damage. Leaking valves, fittings or components must be repaired immediately or isolated to prevent further discharge. Any other deficiencies or irregularities noted must be repaired as soon as possible or as required depending on the nature of the defect (See for an example of the STI SP001 Standard Monthly Inspection Checklist).. Monthly OM OM OM Annual External Inspection (Identified as P in Table 8-2): A more detailed examination of the tank and appurtenances must be performed on an annual basis (See for an example of the STI SP001 Standard Annual Inspection Checklist). Annually OM OM OM Formal External Inspection (Identified as E in Table 8-2): A formal external inspection must be conducted by certified STI SP001 inspector. Formal Interior Inspection (Identified as I in Table 8-2): A modified formal internal inspection as defined in manufacturer’s instructions or STI SP001 As established by SCP based on tank size and category listed in Tables 8-1 and 8-2 SM SM SM