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§112.7 40 CFR Ch. 1 (7-1-93 Edition) Environmental Protection Agency §112.7 the accumulation should be exam- An alternative system could consist of (A)The steam return or exhaust lines (3) Facility transfer operations, pump- of of t before starting to be sure ex oil a complete drainage trench enclosure from internal heating coils which dis- ing, and in-plant process (onshore); (ex- inedno will be discharged into the water. arranged so that a spill could termi- charge into an open water course ciuding production facilities). (i} Buried (ii) Flapper-type drain valves should nate and be safely confined in an in- should be monitored for contamina- piping installations should have a pro- tective not be used to drain diked areas. plant catchment basin or holding pond. tion, or passed through a settling tank, tective wrapping and coating and Valves used for the drainage of diked (iii) Drainage of rainwater from the skimmer, or other separation or ratan- onditions warrant be lIf a section of bur- areas should, as far as practical, be of diked area into a storm drain or an ef- tion systenfeasibility of installing an ied line is exposed for any reason, it manual, open-and-closed design. When fluent discharge that empties into an external heating system should also be should be carefully examined for dete- plant drainage drains directly into open water course, lake, or pond, and external h. rioration. if corrosion damage is found, water courses and not into wastewater bypassing the in-plant treatment sys- ( additional examination and corrective treatment plants, retained storm water tem may be acceptableai f: is normally (viii) New and old tank installations action should be taken as indicated by should be inspected as provided in (A) The bypassshould, as far as practical, be fail-safe the magnitude of the damage. An alter- paragraphs (e)(2)(ii!) (B), (C) and (D) of sealed closed. engineered or updated into a fail-safe native would be the more frequent use this section before drainage. (B) Inspection of the run-off rain engineered installation to avoid spills. of exposed pipe corridors or galleries. (iii) Plant drainage systems from water ensures compliance with applica- Consideration should be given to pro- (it) When a pipeline is not in service, undiked areas should, if possible, flow ble water quality standards and will viding one or more of the following de- or in standby service for an extend into ponds, lagoons or catchment ba- not cause a harmful discharge as de- vices: time the terminal connection at t. sins, designed to retain oil or return it fined in 40 CFR p�slue is opened, and 110. (A} High liquid level alarms with an transfer point should be capped or to the facility. Catchment basins (C) The bypass audible or visual signal at a constantly blank-flanged,and marked as to origin. should not be located in areas subject resealed following drainage under re- manned operation or surveillance sta- (iii) Pipe supports should be properly to periodic fielding. sponsible supervision. tion; in smaller plants an audible air designed to minimize abrasion and cor- (iv) If plant drainage is not engi- (D)Adequate records are kept of such vent may suffice. rosion and allow for expansion and con- ' neered as above, the final discharge of events. (B) Considering size and complexity traction. all in-plant ditches should be equipped (iv) Buried metallic storage tanks of the facility, high liquid level pump (iv) All aboveground valves and pipe- with a diversion system that could, in represent a potential for undetected cutoff devices set to stop flow at a pre- lines should be subjected to regular ex- the event of an uncontrolled spill, re- spills. A new buried installation should determined tank content level. aminations by operating personnel at turn the oil to the plant. be protected from corrosion by coat- (C)Direct audible or code signal com- which time the general condition of (v)Where drainage waters are treated ings, cathodic protection or other ef- munication between the tank gauger items, such as flange joints, expansion In more than one treatment unit, natu- fective methods compatible with local and the pumping station. joints, valve glands and bodies, catch ral hydraulic flow should be used. If soil conditions. Such buried tanks (D) A fast response system for deter- pans, pipeline supports, locking of pump transfer is needed, two "lift" should at least be subjected to regular mining the liquid level of each bulk valves, and metal surfaces should be pumps should be provided, and at least pressure testing• storage tank such as digital computers, assessed. In addition, periodic pressure one of the pumps should be perma- (v) Partially buried metallic tanks telepulse, or direct vision gauges or testing may be warranted for piping in nently installed when such treatment for the storage of oil should be avoided, their equivalent. areas where facility drainage is such is continuous. In any event, whatever unless the buried section of the shell i l (E) Liquid level sensing devices that a failure might lead to a spill techniques are used facility drainage adequately coated, since partial burial should be regularly tested to insure event, systems should be adequately engi- in damp earth can cause rapid corro- proper operation. (v) Vehicular traffic granted entry neered to prevent oil from reaching sion of metallic surfaces, especially at (ix) Plant effluents which are dis- into the facility should be warned ver- navigable waters in the event of equip- the earthlair interface. charged into navigable waters should Bally or by appropriate signs to be ment failure or human error at the fa- (vi) Aboveground tanks should be have disposal facilities observed fre- that the vehicle, because of its S. cility. subject t periodic integrity testing, uently enough to detect possible sys- will not endanger above ground piping. (2) Bulk storage tanks (onshore); (ex- taking into account tank design{float- em upsets that could cause an oil spill (4) Facility tank car and tank truck ciuding production facilities). (i)No tank ing roof, etc.) and using such tech- event. Ioading/unloading rack (onshore). (i) should be used for the storage of oil un- niques as hydrostatic testing, visual un- less its material and construction are inspection or a system of non-destruc- loss)ofisoll fromletankwseams a gaskets oadinga p ocedures shoed 1 meet g/the compatible with the material stored tive shell thickness testing. Compari- rivets and bolts sufficiently large to minimum requirements and regulation and conditions of storage such as Pres- son records should be kept where ap ease the accumulation of oil in diked established by the Department of sure and temperature,etc• dations s and tank supports and e in- (it) All bulk storage tank In dations should be included in these in- areas should be promptly corrected. Transportation. rtable oil storage re es tions should e constructed ructed so that g thection shoed addition, a freoutside of (xi) Mobile quently observed tanks(onshore)shor ould be positioned or noti)floweinto akcatchment area nbasin age oor secondary rsonnel for signs of de- located so as to prevent spilled ail from treatment facility designed to handle provided for the entire contents of the by operating pe largest single llown for plus Sufficient ion. Spill, oron, leaks which accumulation ofght oil�Inside meansuse anof eontainm nt such as dikes or be�lused for ltank truck loading and oun- freeboard to catchment basins, should be furnished loading areas. The containment system Diked areas should be sufficiently lm- diked areas. for the largest sin le compartment or should be designed to hold at least pervious to contain spilled oil. Dikes, (vii) To control leakage through de- g coningle com- talnme curbs, and pits are purpose but owing fact rs should be considered and at d where they facilities will not be subject partment of aatank a arnor stank truck monly employedto periodic flooding or washout. loaded or unloaded in the plant. they may not always be appropriate. applied,as appropriate- 25 24