ML20151F933
| ML20151F933 | |
| Person / Time | |
|---|---|
| Site: | 07109193 |
| Issue date: | 03/31/1985 |
| From: | NUCLEAR ENERGY SERVICES, INC. |
| To: | |
| Shared Package | |
| ML20151F702 | List: |
| References | |
| 29181, NUDOCS 8804190074 | |
| Download: ML20151F933 (7) | |
Text
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l SAFETY ANALYSIS REPORT FOR MODEL NES-5 PACKAGE l
TO 10 CFR 71 TYPE B(U) PACKAGING REQUIREMENTS (REVISION 8) l SUBMITTED BY:
NUCLEAR ENERGY SERVICES, INC.
SHELTER ROCK ROAD DANBURY, CT 06810 l
MARCH 1985 4
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8804190074 880324 PDR ADOCK 07109193 C
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March 26,1988 Page 1 of 2 ATTACHMENTI Summary of Revisions to C of C 9193
n25 Maryc 26,1988 Page 2 of 2 Revisions to Certificate of Compliance No. 9193 1.
Section 2.4.3.3, "Lid Lif ting Lugs", pages 2-15 and 2-16 The safety factor calculations were : hanged to clarify the safety factors involved. Previously the lid weight was not multiplied by a factor of 3 prior to calculating the safety factors. The lid weight is now multiplied by a factor of 3.
The safety factors calculated are now the safety factor of 3 requirement.
HER March 26,1988 Page 1ofI l
ATTACHMENT II INSTRUCTIONS FOR INCORPORATING REVISIONS MODEL NES-5 PACKAGE SAR REMOVE PAGES REPLACE WITH REVISED PAGES Cover Page Cover Page 2-15 2-15 2-16 2-16
11G.5 The maximum Joad was found to be in Element No. 29 in the outer shell just below the reinforcing ring. The maximum stress intensity is 19,006 psi.
Considering that ten times the weight of the cask was assumed in the analysis, the factor of safety is very large.
2.4.3.3 Lid Lif ting Lugs The maximum lif ting load exerted on the lid lif ting lugs is based on:
W 11,175 (3 times Wt. of Lid)
=
L 11,175 + 4 (the weight carried by each of the 4 lugs)
P
=
2,794 lbs
=
1.
Tension in each lif ting lug:
0 P
=
t 3
A 3 (0.75)2 = 0.4418 in 2 4
'9
= 3,162 psi
=
t 2x0.4418 30 000 Safety Factor =
_ 9,99 2.
Welding around lif ting lug:
2
<\\
n Dteff = n (0.75) 0.707x2xK = 0.S329 in ef t =
0 P
2794
= 1,677.3 psi
=
=
3 E
2x0.8329 eff Safety Factor =
20200
= 12.0 1,677.3 2-15
.i nB.5 3.
3/4" - 10 UNC Bolt:
Stress Area A = 0.334 in o =
P_
2794
= 4,182.6 psi
=
s 2A 2x0.334 Safety Factor = 30,000 = 7,t7 4183.6 4.
6 3/4" x 2" x 3/4" Plate:
Max. Moment = 2,794 (5.125-2.625 ) = 1746 lbs-in 2
2 Section Modulus = (2-0.875) (0.75)2 =.1055 in 6
Max. Bending Stress = 1746 = 16,552. l psi 0.1055, Safety Factor = 30,000 ; i,3 16,552.1
)
2.4.4 Tie-Downs The tie-down system for transporting the package is designed to the load conditions defined in 10 CFR 71.45. This load condition is defined as follows:
... The system shall be capable of withstanding, without generating stress in any material of the package in excess of its yield strength, a static force applied to the center of gravity of the package having a vertical component of two times the weight of the package and its contents, a horizontal component along the direction in which the vehicle travels of 10 times the weight of the package with its contents and a horizontal component in the transverse direction of 3 times the weight of the package with its contents."
The Model NES-5 Package has been provided with a tie-down frame which is integral with the top impact limiter (overpack). The tic-down lugs extend through pockets in the upper impact limiter which serve to surround each lug with an air space to accommodate failure or distortion of the lug.
The impact lirniters surround the package ends and are attached together by six (6) 1-3/8" diameter ratchet binders.
These ratchet binders primarily carry inertial loads only because both end impact loads and tie-down loads are reacted by direct compression of the impact limiter and the
(
integral tie-down frame upon the body of the package.
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l 2-16 1
o.
o DOCKET No CONTROL o, N
l$3 DATE OF ogg,
/
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DATE RCyo, FCUF FCAp PDR LPDg I&E FCTC REr. y
/
SAFEgyggg~
DATE OTHER s
INITIAL
.