ML20127M725

Accepts 720724 Proposed Change to DPR-22 TS Re RHR Svc Water Min Pump Discharge Head Pressure

ML20127M725
Person / Time
Site:	Monticello
Issue date:	10/31/1972
From:	Skovholt D US ATOMIC ENERGY COMMISSION (AEC)
To:	Dienhart A NORTHERN STATES POWER CO.
Shared Package
ML20127M728	List: ML20127M725 ML20127M735
References
NUDOCS 9211300446
Download: ML20127M725 (2)

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OCT o i m2 j Docket ;o. 50-263 l

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.crtnern States iower Lo..:pary ATr.l. lr. Artnur V. 01ennart Vice President of Enc,ineerirr; 414 alcollet ihl1

.dnneapolis.idnnesota 55401 C W1 :"e.4.

3 Gentlemen.

Licence + c. LMt 22

'lour letter dated July N l'M2. propcacc a cmtr;a t,o uno recancal Epecifications of itoviaicr.al Cperatin~, deenne

b. chi 22 for the ibnticello Juclear Genemtin.- flant. 'ihe proposed change would reuuce nesidual Heat.croval Lervice i

..ater (tuR3W) rdnt:.ua pum discinrgo head leucure frcrr. 550 feet to.,;00 feet at 3500 pm mted floa.

i we rave reviewed your groposal and the info mtion presented in your letter dated July 3,1972. to tne oirectorate of Licenu12r:

l remrdirr, the perfornance of the JJJCd pum and have concluced tmt tne I:nxinua uccana on the JdESW pu:p witn r.llcr*ce fcr l

pri:;nt;/ coolant snoll pressure durinc. core coolitr;. ceivice water j

flow resistance, conta11 rent presburc duritr, accident conditiom ana tune to anell differential pressure of 20 psi cpecified in the Fiml rafuty Arnlysic deport is 460 feet 20 feet lower tnan the proposed mil.11aa pu:p disenarge pressure.

I Cn this basin. we have ecncluded that the propor 3d charm does not present ui!aificant hanuras ecucicerationn not Lescribe.4 rr

_rplicit in the sonticello Cafety ianlysis ;teport nna tlat thm la reasonable assurance tmt the healta anc cafety of the pub.lic will tot be endaWered by opemtion of the iustSW cyctem in the

anner proposed.

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9211300446 721031

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PDR ADOCK 05000263 P

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l fbrthern States Power Caspary 007 3 i g; Accordingly, pursuant to Section 50 59 of 10 CPn Part 50, the last line of itan 3 5.c.4 (page 102) of the Technical Specificatiors of Provisions 1 Operating License 16. DIS-22 is hereby changed from "3500 gpm against a head of 550 feet." to "3500 cpn against a red of 500 feet."

Sincerely, une.a dr

, - " noll Donald J. 3:ovbolt Assistant Director for Operating Peactorn Directorate of Licensing ec: Donald E. Nelson, Psquire Vice President and General Counsel 13arthern States Power Ccxrpary 414 Nicollet Avenue F W 14=, Minnesota 55401 j

D_ ictribu_ tion v ienet ille PDR I.ccal PDR RP Readirg h'anch :ieadin;;

ACRS (16)

EPA (3)

JRBuchanan, CRHL E aug,hlin, DIIE Callo/Seiffert, CGC R0 (3)

RTedesco, L:CS RVollrcr, L: ^.A DJSkovnolt, L:OR TJCarter, L:CR DLZie:mnn, L:CRB #2 JJShea, L:CR3 #2 RMDiggs, L:CRB #2 NDebe, L:0PS MJinks, DRA (4) t L;0RB 12

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iggs LZ mann DJSkoVnolt I JJShea:sjh 10[24/72 10/24/72 10/A[/72 10/8/72 Form AEC 318 (Rev. 9 5 0 AECM 0240

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