ML19289C582
| ML19289C582 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 01/16/1979 |
| From: | Groce R Maine Yankee |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| WMY-79-4, NUDOCS 7901190089 | |
| Download: ML19289C582 (2) | |
Text
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a MilRE HARHEE 'Aluml0POWERCOMPARU*
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F NONCER NG OF F <L b l 7 - 3% Vf I B.3.2.1 O
kMY 79-4 January 16, 1979 United States Fuclear Regulatory Ccemission Washington, D. C.
20555 Attention: Office of Nuclear Reactor Regulation
References:
- 1) Licent.,e No. DPR-36 (Docket No. 50-309)
- 2) Letter kMY 79-1, D. E. Vandenburgh to USNRC, January 8, 1979,
Subject:
Corrections to the T00DEE2 Computer Code
- 3) Letter kMY 79-3, R. H. Groce to USNRC, January 15, 1979,
Subject:
Results of Steam Cooling Model Study Using YAEC's Corrected Version of T00DEE2
Dear Sir:
Subject:
Ace'ndments to kMY 79-1 and kMY 79-3 This letter amends references 2 and 3.
These amendments involve a modification to the axial part of the heat conduction equation in YAEC T00DEE2. The additional modifications to T00DEE2 are as follows:
- I RAT 2.155 IF(U(I,J).LE.1.) CO TO 999 ABBTH (J ) =TE (I, J-1) +Q (I, J ) * ( STR (J,1) -TE (I, J) )+ (1. -l. /U (I, J ) ) *
- (ABTH-TE (I,J-l' )
IF (AVAIL (25).LT.O.0)
ABBTH (J ) =TE (I, J+1)+Q (I, J ) * (STR (J,1) -TE (I, J ) )
- + (1. -l. /U (I, J) ) * (ABTH-TE (1, J+1) )
999 CONTINUE The clad temperatures predicted by the steam cooling codel in this codified version of T00DEE2 are su=marized in Table 1-A along with the rest of the results submitted in Reference 3.
The implementation of this modification in the 1.0 DECLG Top Peak Sample Problem Case previously analyzed by YAEC results in a change in Calculated Peak Clad Temperature from 2070 F to 2068 F.
We trust that the above info mation is satisfactory.
If any ques-tions should arise, please feel !
.e to call Dr. Ausaf Husain at our engineering office, 20 Turnpike Road, Westboro, Mass., 01581, Tel. 617-366-9011, Extension 219.
Very truly yours, MAINE YANKEE ATOMIC POWER COMPAh7 7 9 0119 0 0 D h
kg 0h Ro Groce Licensing Engineer
\\
REG /em Enclosure f
TABLE l -a COMPARISON OF PEAK CLAD TDIPERATURES PREDICTED BY T00DEE2 STEAM COOLING MODEL TO FLECHT LOW FLOOD RATE EXPERIMENTAL DATA PEAK CLAD TD'PERATURES, OF YAEC T00DEE2 YAEC T00DEE2 YAEC T00DEE2 Elevation, Ft.
FLECHT Run Number FLECHT (Uncorrected)"
(Corrected)
(Medified) 2 0183 992 1138 1138 1138 4
1695 1845 1845 1844 6
2222 2331 2335 2334 8
2080 2105 2103 2106 10 1596 1587
'1607 1622 2.
0487 1039 1048 1048 1048 4
1782 1940 1940 1940 2561 6
2335 2560 2563 2332 8
2197 2333 2330 1777 10 1702 1739 1760 2
0690 955 926 926 926 4
1616 1630 1630 1630 6
2119 2131 2135 2135 8
1979 1938 1935 1940-10 1500 1509 1527 1548 2
0791 1007 1007 1006 1006 4
1720 1817 1817 1817 2419 6
2326 2416 2419 2297
'8 2225 2296 2288 1945 10 1896 1892 1907 k
6 4
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