ML19257D081
| ML19257D081 | |
| Person / Time | |
|---|---|
| Site: | 07105450 |
| Issue date: | 10/22/1979 |
| From: | Dipiazza R WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP., WESTINGHOUSE ELECTRIC CORP. |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 14464, NUDOCS 8001310341 | |
| Download: ML19257D081 (4) | |
Text
g. Oe 7/-5450 Westinghouse Water Reactor Box 355 Electric Corporation Divisions Pittsburgh PennsyNria 15230 October 22, 1979 URD-LSF,S-859 U.
S.
I:uclear Regulatory Commission Office of Nuclear Material Safety & Safeguards Division of L'uel Cycle & Material Safety Washington, D.
C.
20555 Attention:
Mr.
C.
P.
IktcDonald, Chief Transportation Branch Gcatlemen:
Subjuct:
Revision of Certificate of Compliance NO S A. 5 0,
Docket 71-5450 The Westinghouse Electric Corporation hereby requests the revision of Cartaficate of Compliance Numbcr 5450, Docket 71-5450 to add the foltowing item under contents in paragraph 5 (b) (1) (ii):
Type CE Type 14xl4 Pellet Diameter (NO:1), in 0.3805 Rod Diameter (NOM), in 0.44 MaxLaum fuel length, in 144.0 Ma:.imum Rods / ele:aent 176.0 Maximum cross section (NOM), in.sq 7.98 Maximum U -235/ element, Kgs 19.0 Maximum U-235 enriclmtent, w/o 3.85 Criticality calculations were parformed to check if CE type fuel assemblies can be shi.pped in the RCC shipping container.
The fuel assembly is describad in Table 1.
The geonetry of the shipping container is described in Figure 1.
Tha AnW:-ITUO system of computer codes was used for the calculations.
I'o r the single flooded shipping container described in Figure 1, the Keff was 0.8996 +.0015.
The current license assumes that the MCA (maximun credible accident) is two chipping containers crushed to-gether so that there is only 4 inches separating the fuel assemblies.
1845 232 14464 8 0 01310 3V/
C_
_2_
This would add 0.04 to Keff.
In addition, method and KEMO uncertainties must be added.
Using the method and results of NDl-78-173, this would add, on a 95/95 basis:
[(0.0057) (2.2G) 2+
(0.0045) (1.7)]
= 0.0150 to the result.
No mechanical uncertainties need be included since worst case thickness and dimensions are assumed.
The final result for Keff is therefore 0.8996 + 0.04 + 0.015 = 0.955.
Since this is less than the design limit for Keff of 0.98, the CE type fuel can be shipped in the RCC container.
If you have any questions regarding this matter, please write me at the above addruss or telephone me on 412-373-4652.
Very trul y yours, h
8
1 l al s
~,Y k,/
El C%d
} '.If[gf
(
Ronald P.
- DiPiazza, Manager NES License Itaninist. ration
/clh 1845 233
7./
i TABLE 1 ff Nr])!r- $$, $@llQ CE TYPE FUEL ASSEMBLY DESCRIPTI0t1 CE TYPE
_14x14
. Type Pellet diameter (tiom), in 0.3805 Rod diameter (t!om), in 0.44 Maximum Fuel Length, in 144.0 i
Maximum Rods / element 176.0 Maximum Cross Section (i'om), in. sq.
7.98 Maximum U-235/ element, kgs 19.0 Maximum U-235 enrichment, w/o 3.85 m =.
.f FUEL ROD
~--
0.440" OD s'i e:s : pN, ea: a Y&u.a :k b.. D n
u.
f 1 t i i i t. u i..
ij 4.640" lH HP H--H ji rt T r-! V..
.~,.
v 4
e-gi 4
i
- )
w &qi+,4m v y,+p a
n v
i.qny 7 d...T - t.
-=--I v
c.
. m,.s.g.g..:. -....
- c..m j
43 0.580" n 0.140" FUEL RO'D PlTCH 1845 234 W
\\
'f:
-mx
[. ".
N
/
i I
Figure 1 Single Flooded Shipping Container Description cn X
1.6,52" 3.85 w/o
- s k.'
H0 Type 2
et C1.3 Assembly Steel.17" 1845 235 Y
144(;q