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Y � � Environmental Protection Agency §112.8 (iii) Open the bypass valve and reseal charges. You must provide at least one it following drainage under responsible of the following devices: supervision;and (i) High liquid level alarms with an (iv) Keep adequate records of such audible or visual signal at a constantly events, for example, any records re- attended operation or surveillance sta- quired under permits issued in accord- tion. In smaller facilities an audible air ance with §§122.410)(2) and 122.41(m)(3) vent may suffice. of this chapter. (ii) High liquid level pump cutoff de- (4) Protect any completely buried vices set to stop flow at a predeter- metallic storage tank installed on or mined container content level. after January 10, 1974 from corrosion b (iii) Direct audible or code signal y coatings or cathodic protection communication between the container compatible with local soil conditions. gauger and the pumping station. You must regularly leak test such (iv) A fast response system for deter- completely buried metallic storage mining the liquid level of each bulk tanks. (5) Not use partially buried or storage container such as digital com- bunkered metallic tanks for the stor- gaugputees. s, t you h direct vision age of oil, unless you protect the bur- gauges. If you use this alternative, a ied section of the tank from corrosion. Person must be present to monitor You must protect partially buried and gauges and the overall filling of bulk bunkered tanks from corrosion by storage containers. coatings or cathodic protection com- (v) You must regularly test liquid patible with local soil conditions. level sensing devices to ensure proper (6) Test each aboveground container operation. for integrity on a regular schedule, and (9) Observe effluent treatment facili- whenever you make material repairs. ties frequently enough to detect pos- The frequency of and type of testing sible system upsets that could cause a must take into account container size discharge as described in§112.1(b). and design (such as floating roof, skid- (10) Promptly correct visible dis- mounted, elevated, or partially buried). charges which result in a loss of oil You must combine visual inspection from the container, including but not with another testing technique such as limited to seams, gaskets, piping, hydrostatic testing, radiographic test- pumps, valves, rivets, and bolts. You ing, ultrasonic testing, acoustic emis- must promptly remove any accumula- sions testing, or another system of tions of oil in diked areas. non-destructive shell testing. You (11) Position or locate mobile or port- must keep comparison records and you able oil storage containers to prevent a must also inspect the container's sup- discharge as described in §112.1(b). You ports and foundations. In addition, you must furnish a secondary means of con- must frequently inspect the outside of tainment, such as a dike or catchment the container for signs of deteriora- basin, sufficient to contain the capac- tion, discharges, or accumulation of oil ity of the largest single compartment inside diked areas. Records of inspec- or container with sufficient freeboard tions and tests kept under usual and to contain precipitation. customary business practices will suf- (d) Facility transfer operations, pump- fice for purposes of this paragraph. ing, and facility process. (1) Provide bur- (7) Control leakage through defective ied piping that is installed or replaced internal heating coils by monitoring on or after August 16, 2002, with a pro- the steam return and exhaust lines for tective wrapping and coating. You contamination from internal heating must also cathodically protect such coils that discharge into an open wa- buried piping installations or otherwise tercourse, or pass the steam return or satisfy the corrosion protection stand- exhaust lines through a settling tank, ards for piping in part 280 of this chap- skimmer, or other separation or reten- ter or a State program approved under tion system. part 281 of this chapter. If a section of (8) Engineer or update each container buried line is exposed for any reason, installation in accordance with good you must carefully inspect it for dete- engineering practice to avoid dis- rioration. If you find corrosion damage, 33