ML19256D122
| ML19256D122 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/25/1967 |
| From: | Danielle Sullivan US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Long C US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7910170582 | |
| Download: ML19256D122 (2) | |
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C. Long, Chiaf OCT 2 5 p:~-
Ramre r Project Branch f3, DEL e
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V. A. Hoo, Chiaf, 2&PTB, DEL D. F. Sallivan Instruematation and Pouar Techselogy Branch, DEL METEDPaLITAE EDISOK, TERIE MILE ISLAND IIIIT #13 @ESTIQtS nri ATING TO INSTRO JITATIONg DOCKET #50-289 I&PTB DRL:DFS - RT-220 Flaase i=r1=<Im the feliswing questians among these la preparatica i.:'
transmittal to the applie=ar:
1.
In roepense to a previces staff questies (Bef. Supplenet fl, Questiaa #9.2) relating to the performanse of equipesat located witkis containeest, yr.a stated that the fan and valve motors will have a system of las.dgaf an and emelasura skick has dessastrated capability to perform ander the envir=====ts specified (poet pacihe saviremmaats). Will this espability be determined by envire====t41 tests cand=**ad under Metropolite Edison's super-visian, er will it be inferred (extrapelated) from asisting amenf=**==mus' data? Plaaes provide a detailed justification of year positian. Seccians 3.7 and.4.4 of the IEEE Standard, Baclear Power Flaat Pretsetian Systems (Bav. 9) should be addressed.
2.
Assuming that it becemos aseessary to abandon the eestrel room during fall power operaties, pisase discuss the proendares that could be performed external to the centrol reos which would ensars a safe shutdsva of the plant. Imelude, in your discussion, the instrumentaties available for monitoring vital plant paramatars.
Cassiderationa of DEA and eq=i=-* damage may be excluded.
3.
Flaase analyze the consequeness of an as ci,imetal phase reversal at an emaramacy bus under accident eenditions. The singla failure criterian should not be used as a basis for the smalysis in those cases where meehimary r=e=*4=g in reverse has an adverse affect as its redandant --*arparts.
4.
Flames disessa, in detail, your criteria relating to the physical separatian of the installed instrument and logie chamaels which initista prutective and emergemey safety fee.tura acties. This discussian shoald imelade, but act necessarily be limited to, esmaiderations of the felissing:
(a) Separaties between redundant lastruments.
34 % 20,3 (b) Se,aracian netween -d.da.t -1ars and b=aham.
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OCT 2 5 E67 (c) Routing of rodadant viring (d) Parasnently installad test equipannt which any be cosanon to redundant instruent channels.
5.
Please list the emergency equipanat which is powered by the engineered safeguards busees.
6.
Under what eenditions will the engineered safeguards busses be tied together? Will the tie be made automatically or manually?
7.
Ch Pass 9-41 of the PSAR you state that there is manual provision for switaking to full recirculation for post accident control room ventilaties. Please discuse your justification for the absence of anteestic switching in response to a signal indicative of an accident sendition.
8.
Please idastify the type of deteater to be used in the Rasctor n=41 ding Dome Monitor ud describe the calibration precedures to be used for the intef =1 ed periedia calibratica of this moniter.
9.
1Anat are the anyested ragse of the Atmospheria and Liquid Monitertag Systems.
- 10. Plaase indisata the relationship between your DBA analysis and the Radiatf on Noaitering Systems' ranges, sensitivities and detector leastissa.
ees
- 5. Imvise B. Grimes T
polito I
D. Sullivan Distribut}e61 Suppl. /
DRL Reading AD/RT Reading I&PTB Reading DS
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SURNAME >
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