B11860, Proposed Tech Specs 3/4.6.5.1,3/4.6.J.1 & 3/4.6.J.3 Providing Option of Resin Replacement for Condensate Demineralizers in Addition to Resin Regeneration
| ML20140E154 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 01/31/1986 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20140E147 | List: |
| References | |
| B11860, NUDOCS 8602030193 | |
| Download: ML20140E154 (3) | |
Text
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Docket No. 50-245 Bil360 Attachment I Millstone Nuclear Power Station, Unit No.1 Proposed Revision to Technical Specification Condensate Demineralizer January,1986 0602030193 Bhjoo$45 ADOCK O PDR PDR P
LIMITING OWDITIW FOR OPEPATIW SURVEIIIAN0: REQUIREMNT J.
Ocrdensate Deineralizers J.
Condensate Danineralizers 1.
Regeneration an@'or replacanent of a acrdensate 1.
The percent of the remaining ion exchange danineralizirg resin charge shall occur before the capacity of the anion resins shall be unused capacity of the resin reaches a mininrn value calculated and legged:
of 30 pounds as chloride ions.
a.
Weekly when the influent conductivity is 2.
If the charge is regenerated, the anion resins in the between 0.055 and 0.3 trnho/on; cordensate demineralizing systen shall have a mininm salt-splittirg mpacity of 0.75 railliequivalents per b.
Daily when the influent conductivity is milliliter in the wet, chloride form. Anion resins equal to or greater than 0.3 trnho/an.
which do not have a capacity of 0.75 milliequivalents per milliliter will be replaced with new resin as 2.
All REONERAGED condensate denineralizer will the cation resin which occupies the sane bed.
charges shall have tm anion resin analyzed quarterly for salt-splittirg capacity.
3.
If the charge is replaced, the new anion resin shall have a minin m salt-splitting capacity of 1.1 3.
If resin is replaced instead of regenerated, milliequivalents per milliliter in the wet, chloride new sarples of anion resin shall be analyzed form.
for salt-splitting capacity as follows:
4.
At least cm a3rdensate danineralizer influent a.
At least once per year or at each cmductivity instnznent shall be operable.
replacanent, whichever is longer, if resin is Iglaced with material of the 5.
thenever a danineralizer is on-line, the corrbctivity sane type.
of either its effluent or the aandensatedx30 ster ptmp discharge shall be aantiru3usly monitored, b.
Prior to use in the condensate danineralizers if the type of anicxi resin 6.
Flow rate arxVor integratirg flow instnanentation charged.
shall be operable and recorded for each ckmineralizer.
K.
Mechanical Cordenser Vacutan Ptzrp l
At least once during each operatiro cycle, verify autanatic securirg and isolation of tM K.
Mechanical Condenser Vacutm Ptzrp mechanical condenser vacutzn pturp.
I 1.
'Ibe trechanical cmdenser vacutm pturp shall be capable of beirg isolated ard secured on a signal of high radioactivity whenever the main stean line isolation valves are open.
3/4 6-19
When a snubber is found incperable, an ergimerirg evaluation is performed, in aMition to the determination of the snubber made of failure, in order to determine if any safety related cotponent or systs has been adversely affected by the inoperability of the snubber.
The ergineerirg evaluation shall determine whether or not the sntbber made of failure has inparted a significant effect or degradaticn on tin supported corpcnent or systs.
To provide assurance of snubber reliability, a representative satple of the installed snubbers will be tested durirg plant shutdowns at eighteen (18) month intervals. @ served failures of these satple snubbers shall require testirg of additional units.
Hydraulic snttbers ard mechanical sntbbers may each be treated as a different entity for the above surveillance progras J.
Condensate Dmineralizers l
The criteria of the resin mmitorirg progran and the resin replacment progran have been establied to protect the I
reactor fran high chloride level should a seawater leak occur in the main condenser. These criteria will provide for a minimtrn unused capacity of 30 pounds of chloride ion (50 percent depletion in a resin which is amroachiry the limit of 0.75 meq/ml) before a plamed regeneraticn or replacanent of a resin. Should a seawater leak occur when a resin has 30 pconds of capacity rmainirg, this critericn will allow a sufficient buffer for an orderly plant shutdown.
The resin depleticn can be calculated usirg the measured salt-splittirg capacity, the flow throtgh the bed, and the average influent conductivity.
Based on this result, a depletion can be calculated which will assure a 30-pound chloride ion excharge reserve. Regeneration prior to this level of depletion will assure a sufficient ion excharge reserve for rmoval of chloride frun the omdensate systen.
These factors form the basis for the frequency of sampling, analyzing, calculation and logging surveillance requirements.
A yearly or once per replacanent satpliry frequerry will be sufficient to verify su@ lier resin specifications. A quarterly satplirg frequency will be sufficient to detect the slow, long-term degradation of regenerated resin.
As conductivity increases, the calculation and logging will be increased to a weekly basis and ultimately cn a daily basis when ard if influent condtetivity reaches 0.3 trnho/an or greater.
J k
B 3/4 6-11
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