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SECTION 13985 - STEEL UNAERGROUND STORAGE TANKS: continued <br /> attachmenta. Strap assembly tenaile capaclty ehall be equal to <br /> anchor bolta. <br /> 8. Separator ahall ba cylindrical and constructed of ASTM A36 ateel <br /> with all aeamn, double welded construction. <br /> 9, An inlet flow diffuaing nozzle with a 360-degrea diaperaion will be <br /> poaitioned with the outlet below the oil-water interface. <br /> 10. Interior coating shall be 6 mile of epoxy conforming to MIL-C-4556, <br /> steel tank conatruction only. <br /> 11. All manholes are to extend to grade as indicatad. <br /> E. Acceeaories: <br /> 1. The separator shall be furnished with a removabla coaleecer. The <br /> coaleacer shall be deaigned to Lntercept otl particles of leea than <br /> 20 microns in eize and produce an effluent quelity of lesa than 10 <br /> ppm of oil and greaee. The coalascez ehall be houaed Ln a <br /> etainleae steel fra�aa vith a lifting hook and arm for easy removal <br /> through a rectangular manway complete with requirad extenaion, <br /> cover, gaeket and bolta. <br /> 2, The aeparstor shall be furnished with a aaste oil alacro snd <br /> pump-out eyetem conaleting of: <br /> a, An interface/level probn for alarm and control of inlet valve, <br /> aith Latrineically safe solid-atate controle in a NEMA 4 <br /> ancloaura with a 120-volt ec rating. <br /> b. A 70 gpm, 40 pei eelf-priming poaitive displacement pump with s <br /> 3.0 hp exploaion-proof motor, 460 V, 3 phase for fuel pump out. <br /> Pump ■tart shall ba manual and atop ahall be automatic on oil <br /> lavel reduction to 50 gallons. Pump ahall ba manufacturad by <br /> Blacl�er or approved aqual. <br /> 3. Provide a motor-operated oil �top valve on the inlet of the <br /> saparator as indicated. Valva ahall hsve a 1/4-hp motor, 120 V ac, <br /> 1 phaue, mounted within a NEMA 4 encloaure. . Power for valvs ahall <br /> be provided by 480-120V transformer local to control panel. <br /> a. Interface level probea ahall be aet so that an alarm is given <br /> whan the oil capacity reachea 6,000± gallons, and the inlat <br /> valve ie cloaed at maximum oil capacity. <br /> b. Provide two fac.eory-installed limit ewitchea that detect valve <br /> position. Each awitch shall heve one double-pale, doubla-throw <br /> contacts, and ehall be wetertight and UL-listed for Claec 1, <br /> Croup D hazardoua areas. <br /> 4. Provide local NEMA 4 control panel rated for installetion with <br /> provision for accepting a eingle, 480V, 3 phasa power supply end <br /> tranaforming as required for: start/etop pump control (all pumps) , <br /> power on, pump n+n and alarm indicator lighte, service disconnect, <br /> motor atarters and control tzansfocmer. Control Panel ehall havs <br /> four ae�s of SPDT, dry contacts rated for SA at 120V ac. Contacts <br /> shall be as follova: <br /> a. High Level: 1 eat of N.O, contacta. <br /> b. Inlat Valve Open: 1 aet of N.O, contacta. <br /> c. Inlat Valve Cloaed: 1 eet of N.O. contacts. <br /> d. Product Pump Running: 1 set of N.O. contacts. <br /> Thn inlet valve contacta can be thn limit svitches thamaalves, <br /> provide terminal pointa inaide control penal for fiald termination. <br /> BOE13985.FFf 13985-7 <br />