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Part I: General The monitor ing liquid mqy be: salt brine(30%CACI in
<br /> 0 1.0 the tank manufacturer shall supply a conl+ruiously monf- w{atel J.
<br /> lured hydrostatic head pressure leak delci liun syslem The The probe shall detect and report a change in liquid level
<br /> system shill be designed by the rTmnu,,irtt irlr to detect.i either alcove(high-alirraa point) or below(low-alarm point)
<br /> Irak in either thr primary tank or Chc^seccuulary honk in the neutral level est,iblished during the initial filling and sub-
<br /> either a wet or dry exc�avoifon sequent m.iinlc�nance of the system. The probe shall not
<br /> rhe system shall include: d brine solution (Io prevent free- of)eiate by Traducing an electrical current info the liquid
<br /> incl(delivered to the joh vte in the inicnl,r r of the double medium If i.it is being monitored.
<br /> wall tank, i reservoir mounted on iota of iI i,�lank to piovide The sensin(i range represents a built-in allowance for pres-
<br /> d liquid medium for monitoring, and on rlrc tropic monitor- sure and Ihtrmal variation. Until the liquid level exceeds the
<br /> ing system to sound ren audible and vi`U i,r,rm when the allowable vorotion, the probe shall not send a signal to the
<br /> liquid level of rho reservoir rises or falls tc r I rrrdetermined monitor unit.
<br /> alarm points. The systeni sh^ill,also Include•an electronic
<br /> sc^nsing probe to monitor the attached col,ir riser for the The probe,,half be capable of being mounted in the reser-
<br />' submersible pump, if so specified, voir in a m,inner that allows adjustment of location. The
<br /> probe must ho.able to be mounted so that normal fluctua-
<br /> lions of rhe Itrfuid Icvet do not interfere with the normal
<br /> Part II: Standards opefation of the probe.
<br /> 7.0 The double wall rank with a brine-fillod inti�r=.tier shall be list- The probe shall be capable of operating at a distance of 500
<br /> ed by Underwriters Lahormories. The clec Ironic monitoring feet from the control p,inel.
<br /> system used Io monitor tl le liquid n^servr nt ,Ind the alt.rc hec l 4.2 Attached Collar Riser robe
<br /> roltar riser shalf also be listed by U L for a itinsic:salety in,i (if applicable and shown on the drawing)
<br /> h.VardpUS Jocorion. The probe shall be constructed of a material that is suitable
<br /> All equipment shall he insrAled in acc.ord,ine c,wilh the m,in- for prolonyoJ, complete immersion in any of the fluids fisted
<br /> ulacturer's instruc Mems,incl Al.ipplir,tblr 1, Ionil, slaty, incl in U L. Sl,in J.ird for Safely 131 G, Tdbfe 14 I, Al columns.
<br /> lordl laws rind rc^rlulatirrras. The probe sl alf defect rhe presence of liquid in the riser
<br /> when the lu fi rid level has risen to d MrWrTIum of one inch
<br /> Part Ill: Requirements for above the broom of the probe, as located in its permanent
<br /> q mounting position. The permanent mounting position is
<br /> Liquid-Filled Double Wall Tank determined by(lie installer at the time of installation.
<br /> 3.0 The interstice of the double wall tank s1 i,ili lic filled with a The probe,J),ill be caps#tile of being mounted in the riser in
<br /> brine solution Tanks up through 20.000 rl,rlJons shall be a manner 1hot allows,idjusbnaent of location. The probe
<br /> dt Iivered[o the site with the brine solutioi a in the interslice. %half be able,to be mounted so that an increase in the liquid
<br /> Brine filling of interstice on 25,000.incl 30,000 gallon lonks level does not interfere with the normal operation of the
<br /> shalt be done atjob siIc by conlraclor Thea reservoir shall be probe.
<br /> constructed of fibcyglass and mounter]rliw(Ily to the lop of The probe niounlrnq assembly supplied and installed by
<br /> the tank, The reservoir shall be fitted with otic 4"NPT fitting contractors shall provide protection for the probe from the
<br /> for installation of the electronic-reservoir piarbe• operationril;ic:tivilies that may take place within the riser.
<br /> The probe shall be capable of operating at a distance of 500
<br /> Part IV: Requirement for the feel from Ih •control planel.
<br /> Electronic Monitoring System 4.3 Operating Parameters:
<br /> 4.0 The Controller Temperature 0" F to I W1 F
<br /> The panel shall receive the signal from the wservoir and/or Vottacge: i 10 or 2 21 0 VAC, 50/60 Hz
<br /> attached collar riser and provide for the following indications:
<br /> 1. System normal Part V: Performance
<br /> 7. System fault(The",roll"indication must noir be the same 5.0 te•contin�1 1.is hydrosrotic-monitoring systern, including the
<br /> ,as the"alarm"indic.tion electronics ii id the probes, sh<iil be capable of detecting
<br /> � System leak alarm and,ilarrninq when the liquid level in the tank reservoir rises
<br /> Also, a system-test switch indicating the system is functional or drops beyond the allowable variation.
<br /> shall be provided.
<br /> All alarms shall be both audible and visible. Part VI: Materials
<br /> The unit shalt be cable to be reset. 6,0 The mateii.0% used in the mooi)laring,system shall be
<br /> The controf panel shall provide indication of which tank is in corrosion resr,tant to the•liquid used to fill the interstice.
<br /> the alarm condition, if more than one lank is being moni-
<br /> tored.
<br /> The control panel shall be capable of monrloring up to eight Part VIi: Installation
<br /> probe points. 7.0 The naonaoi incl systems shall be installed in accordance with
<br /> The system shall provide intrinsic safety at Elie^probe locations: the manu,ic tuner's Inst,Dation instructions, rand all applicable
<br /> 4.1 Reservoir Probe federal, stale, ,and local laws and regulations.
<br /> The probe shall be constructed of a material which is suitable
<br /> J for prolonged, complete Immersion in the monitoring liquid.
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