ML19345A784

Notifies That Typographical Error Appearing on Pages 411:08 & 411:18 of 740731 Revised ECCS Analysis Performed Per App K of Proposed Tech Specs Change 117 Has Been Corrected

ML19345A784
Person / Time
Site:	Yankee Rowe
Issue date:	11/04/1974
From:	Vandenburgh D YANKEE ATOMIC ELECTRIC CO.
To:	US ATOMIC ENERGY COMMISSION (AEC)
References
WYR-74-34, NUDOCS 8011250145
Download: ML19345A784 (5)

Text

{{#Wiki_filter:( s Tel: phons 617 306-9011 p,cg,l + cry Fi'o Cy. m 710-390 0739 YANKEE ATOMIC ELECTRIC COMPANY urR 74-34 ,Ya% (,_ 20 Turnpike Road Westborough, Massachusetts 0158) uxus v ~e ~ x ,i .,m s - f,Y November 4, 1974 d '-t W' Wg/g t-- %q ttosr0 ,,.n n A s 8 Q! United States Atomic Energy Commission 'oj j,h Washington, D. C. 20545 /3 j,(h Attention: Directorate of Licensing -.g' v

Subject:

Revised ECCS Evaluation

Reference:

1) License No. DPR-3 (Docket No. 50-29)

2) Proposed Change No. 117, " Revised ECCS Analysis Submitted to DOL /AEC on July 31, 1974.

3) Letter from Karl R. Goller DOL /AEC to Yankee Atomic Electric Company, Attn. Carl Andognini, October 2, 1974.

Enclosure:

Revised pages 411:08 and 411:18 to Reference 2.

Dear Sir:

to 10 CFR 50.46, a revised ECCS analysis ( }, performed in Pursuant accordance with Appendix K, was submitted to the Directorate of Licensing on July 31, 1974. Please note that typographical errors on pages 411:08 and 411:18 of that submittal have been corrected, and the revised pages are enclosed with this letter. In performing the analysis it was decided that a minimum of 700 cubic feet of water available in the safety injection accumulator tank would be needed to provide assurance of compliance with Appendix K ECGS Criteria. This represented a change from the previously assumed 600 ft Exami-nagionofTechnicalSpecificationsrevealedanapparentminimumof650 l ft avgilable. However, a performance analysis revealed that at least 700 ft would be available for safety injection provided the accumulator is maintained in accordance with Technical Specifications. Thus, the accumulator inventory used in the revised ECCS analysis is consistent with Technical Specifications. The revised analysis was performed assuming a peak linear heat generation rate of 13.06 kw/ft rather than the design value of 12.9 kw/ft. Although results show compliance with Appendix K ECCS criteria, the Technical Speci-fication limit of 12.9 kw/ft was retained in order to satisfy the requirements of the facility safety analysis. Thus, no new proposed Technical Specifications were submitted pursuant to Section 50.46 and the Yankee Nuclear Power Station continued operation within the limits of existing Technical Specifications. 8011250/ k 1.L377

4 o. United States Atemic Energy Cocmission November 4, 1974 Attn: Directorate of Licensing Page Two In accordance with your letter ) of October 2, 1974, we have re-examined the revised ECCS sub=ittal and the existing Technical Specifications. Other than the two potential sources of confusion explained above, there are no discrepancies between the Technical Specifications and the revised ECCS analysis. k*e trust that you will find this letter satisfactory; however, should additional information be necessary please feel' free to contact us. , _O// Very truly yours, 1 YANKEE ATOMIC ELECTRIC COMPANY D. E. Vandenburgh Vice President DEV/kg Enclosure j,p-o x., h Dec.. & w> 3__ y, ge $4s q ' _ fj e .:a \\ s 30 s 'Y y 4N s '..t .r, .. U l l-. L l l i~

TABLE 411-1 LARGE BREAK ANALYSIS

SUMMARY

OF RESULTS* e 2 Break Type DECLG** DECLG 0.6 x'DECLS* *

• 1.0 ft 3 (CD = 1.0)

(CD = 0.6) Peak Clad-Temperature, OF 2150 2175 2125 1850 Location of Peak, ft 3.8 3.8 3.8 4.1, Local Maximum Zr-ll 0 Reaction,'*4 7.1 8.6 6.5 2.6 2 Location of Max. Zr-Il 0 Reaction, ft 3.8 3.8 3.8 4.1 2 iTotal Zr-l! 0 Reaction, % r<0.3 <0.3 <0.3 <0.3 2 81.2 83.6 85.4 101.2 llot Rod Burst Time, sec + Ilot' Rod Burst Location, ft -3. 8 3.8 3.8 4.1

• Calculations are based on Reactor Power, n.c 6t3 Peak Linear Power, kw/ft-13.06

' Peaking Factor at Rated ' 2.96 Power. Accumulator Water Volume, 700 ft3- .F'uel Cycle 11-

o o cn u

{ g}3 (( Fuel Region B m +o

• • DECLG. Double-ended cold leg guillotine break.

E. If

• bk
  • • DECLS Double-ended cold Icg slot break, l2 u

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( A AEC DISTRIBUTION FOR PART 50 DOCKET MATERI AL (TEMPORARY FORM) CONTROL NO: 11377 FILE: F RO?clankee Atomic Electric Co. DATE OF DOC DATE REC'D LTR TWX RPT OTHER [estboroug 11-4-74 11-6-74 xxx ss TO: ~ ~ ~ ~ ORIG CC OTHER SENT AEC PDRnx*nn Directorate of Licensing 1-signed SENT LOCAL PDRvvve vvv CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO: ynuxxu 40 50-29 DESCRIPTION: ENCLOSURES: Ltr re their 7-31-74 ltr.... Submitting rev to orig ECCS report due to typographi.:a1 ,ACA,_:t. . 3E errors....... DO NGT EEMOVE PLANT NAME: Yankee Rowe FOR ACTION /lNFORMATION 11-6-74 JGB BUTLER (L) SCHWENCER (L) ZIEMANN (L) REG AN (E) W/ Copies W/ Copies W/ Copies W/ Copies CLARK (L) STOLZ (L) DICKER (E) LEAR (L) W/ Copies W/ Copies W/ Copies W/ Copies PARR (L) VA ALLO (L) KNIGHTON (E) W/ Copies \\" Copies W/ Copies W/ Copies KNIEL (L) URPLE 'L) YOUNGBLOOD (E) W/ Copies W/7Copics W/ Copies W/ Copies INTERNAL DISTRIBUTION VX5C)DR GRIMES ~ LIC ASST A/T IND TECH REVIEW DENTON BRAITMAN AGC, ROOM P 506A SCHROEDER GAMMILL DIGGS (L) SALTZMAN dVNTZING/ STAFF MACCARY KASTNER GEARIN (L) B. HURT y2ASE KNIGHT BALLARD GOULBOURNE (L) AIAMBUSSO PAWLICKl SPANG LE R KREUTZER (E) PLANS v60YD SHAO LEE (L) MCDONALD MOORE (L) (BWR) JTELLOf2 / ENVIRO M AlG R ET (L) CHAPMAN DEYOUNG (L) (PWR) HOUSTOM MULLER REED (E) ydU BE _ SKOVHOLT (L) WOVAK DICKER SERVICE (L) A. COUPE vdOLLER (L)

• QSS KNIGHTON v6HEPPARD (L)

P. CO L LINS IPPOLITO YOUNGBLOOD SLATER (E) D. THOMPSON (2) DENISE TEDESCO REGAN SMITH (L) KLECKER AG OPR LONG PROJECT LDR TEETS (L) EISENHUT FILE & REGION W LAIN AS WILLI AMS (E) /g 4 4 g MORRIS BENAROYA HAR LESS WILSON (L) STEELE VOLlMER EXTERNAL DISTRIBUTION R) /- LOCAL PDR (1)(2)(10) - N ATIONAL LABS 1 - PDR SAN /LA/NY M TIC (ABERNATHY) NSIC (BUCHANAN) 1 - ASLBP(E/W Bldg, Rm S29) 1 - BROOKHAVEN NAT LAB 1 - ASLB 1 - W. PENNINGTON, Rm E-201 GT 1 - G. U LRIKSON, ORNL ,1 - Newton Anderson 1 - B&M SWINEBROAD, Rm E 201 GT 1 - AGMED (RUTH GUSSMAN) LA G - ACRS4WilimenG-1 - CONSULTANTS ' Rm B 127 GT N EWM ARK /B LUME/AGBABI AN 1-D. MUELLER, Rm E-201 S w A 4; #uf, ~ t[dt/N /-/}}