ML20002D206

Forwards Info Re Model Nupac 50,in Response to NRC .Applicable Pages of SAR Have Been Revised to Incorporate Data.Lists Summary of Response

ML20002D206
Person / Time
Site:	07109145
Issue date:	12/12/1980
From:	Hansen L NUCLEAR PACKAGING, INC.
To:	Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
Shared Package
ML20002D207	List: ML20002D206 ML20002D209 ML20002D210
References
18076, NUDOCS 8101200016
Download: ML20002D206 (12)

Text

DD R gl-iMf NUCLEAR

- um PACKAGING, INC.

815 SO. 28TH STREET. TACOMA. WASHINGTON 98409 (206) 572 7775 838-1243 December 12, 1980 Mr.

Charles E.

MacDonald, Chief i

Transportation Branch

]

Division of Materials & Fuel Cycle Facility Licensing United States Nuclear Regulatory Commission Washington, D.

C.

20555

SUBJECT:

Model NUPAC 50 Packaging, Docket 71-9145

Dear Mr. MacDonald:

In response to your letter of December 3, 1980, please find enclosed eight (8) copies of the information requested.

Applicable pages for the Safety Analysis Report have been revised to incorporate the data.

A summary of the response is as follows:

Response #1 - Mechanical property references for the applicable materials have been included on pages 1-2 and 1-3 of the SAR.

Current stated properties for A-276 and A-514 differ slightly from those previously used.

The SAR has been revised to reflect current values.

These changes can be found on pages 1-13, 1-16, 1-21, 1-50, and 1-51.

All revisions produce negligible changes to the existing positive margins of safety and were made only for the sake of completeness.

Response #2 - Option 1,, detail of the drawing, has been clarified.

The angular ring plate is shown at 1/2" thick for the Model 50-1.5L cask only.

All others use a 1.0 inch thick plate.

Since the -1.5L cask uses a 1.25 thick inner-lid plate (Plate F) the reduced thickness of the angular ring plate raises the level of the lead fill to a point that guarantees no open shine path.

Response #3 - The proposed rachet binders have been used very successfully for years on a variety of similarly licensed packages.

A few of these are listed on the following page.

- ~ * '

< 1. m o o olio L

Instructions for Incorporation Revision 1 Amendments to NUPAC 50 SERIES CASK Application, Dated December 12, 1980 Insert new page 1-2 Remove old page 1-2 Insert new page 1-3 Remove old page 1-3 Insert new page 1-13 Remove old page 1-13 Insert new page 1-16 Remove old page 1-16 Insert new page 1-21 Remove old page 1-21 Add new page 1-45a Add new page 1-45b Insert new page 1-50 Remove old page 1-50 Insert new page 1-51 Remove old page 1-51 Insert new Drawing, #X-20-201D, Remove old Drawing, Revision A, Sheet 1 and 2,

1. X-20-201D, Sheets 1 and following page 1-66 2,

following page 1-66.

4

-+

Mr. Charles E. MacDonald December 12, 1980 Page 2 Model Payload Type C of C Paducah Tiger Enriched UF 6

MO-1 Pu Fuel Elements B

9067/B OH-142 High Level Waste B

9073/B HN-100-2 Misc. Waste LSA>A 9079/A 7-100 Misc. Waste LSA>A 9113/A NP-50-2.5L Misc. Waste LSA>A 9130/A Their high strength, reliability, and proven design make them an ideal attachment devise.

In addition, the shorter time required to load and unload packages reduces operator exposure.

A description and supporting documents for the rachet binders have been provided.

Response #4 - The drawing has been revised to more clearly present the requested information.

Response #5 - The drawing has been revised to correctly show tiedown lug thickness to be 2 inches.

Should you require additional information, please do not hesitate to call.

Thank you.

Sincerely yours, NUCLEAR P,ACKAGI?

,1NC.

,)///r

//U< ~

Larry J. lHansen

/

l l

LJH/ pro

Enclosures:

Eight copies NUPAC 50 SAR, Revision 1, including:

Drawing #X-20-201D, Sheets 1 & 2

~

s

Revicicn 1 December 12, 1980 Thicknesses (in)

Steel Cylindrical Walls Version Ends Lead Total 50-1.5L 2-1/4 1-1/4 2

50-2.5L 4

2-1/4 3

50-3.0L 4-1/2 2-3/4 3-1/2 50-4.0L 6

3-3/4 4-1/2 1.2 Weights and Center of Gravity The weight of the four cask versions payload are summarized in Section 0.2.1.5.

The center of gravity for the assembled package is located at the approximate geometric center of gravity.

1.3 Mechanical Properties of Materials The NuPac 50 packaging uses an outer and inner shell fabri-cated of ASTM A516 Gr. 70.

Material properties of the steel are as follows:

(Per Standard Spec. No. ASTM A516-77) 1 70,000 psi F

=

tu 38,000 psi F

=

ty F

=

42,000 psi

(.6 Ftu) 1 l

su F,,

22,800 psi

(.6 F

)

1

=

g Lead shielding will possess those properties referenced in ORNL-NSIC-6 8, Tabl e 2. 6, Page 84.

l l

l t

l 1-2 l

Revicien.1 Decembar 12, 1980 Lid studs are fabricated of AISI, Type 303 or 304 stainless steel per ASTM A582 or A276 respectively.

Properties used for analysis are as follows:

Bar Properties (Per Standard Spec. No. ASTM A 276-77) 1 F,, = 75,000 psi 1

F

= 30,000 psi 1

ty Tiedown lugs are fabricated of U.S.

Steel T-1 material possessing the fo110 wing properties per ASTM A514: (Per Standard Spec. No. ASTM y

A514-77) 2" Plate 110,000 psi 1

F

=

F.Y 100,000 psi 1

=

60,000 psi 1

.6F F

=

=

sy y

1.4 General Standards'for all Packaces This section demonstrates that the general standards for all packages are met.

1.4.1 Chemical and Galvanic Reactions The shield is constructed from heavy structural steel plates.

All exterior surfaces are primed and Oninted with high quality epoxy.

There will be no galvanic, ch'amical or other reaction in air, nitrogen or water atmosphere.

1-3

Revicien 1 Dec mbar 12, 1980 A vertical load produces a cable ' force of:

(4 cables acting)

P

• wA /4B, Tz z

A longitudinal load factor produces a cable force of:

{(c)/(hf

(2 cables acting)

P

• wA /2B Tx x

x Similarly a lateral load factor produces a cable force of:

Ty

• w^y/2B he)/(h P

(2 cables acting)

For conservatism, these three loads may be assumed to coincide for the most severely leaded cable:

A A

A I*f PT"w I

+

L x

y z_

= 28500 32 10 5

2

~

_ 2) (50. 38) I.6521 +.6122 I + (4) (. 4472)_

(

= 244614 lbs.

Using a 40 shearcut the "T-1" lug capacity is:

cos 400)

= 2F,,jt (e P

d 356149 lbs.

1 (2) (60,000) (2) (2.25 - cos 40 )

=

=

The margin of safety for lug yield is:

60,000/244614 -1 = +0.46 1

M.S.

=

The cable load consists of both horizontal and vertical components.

The horizontal load component is transferred to the outer shell through the horizontal lug plates, whereas the vertical load component O

O 1-13

=

Revicicn 1 Decemb0r 12, 1980 The shear stress in the shell is:

f, = 244615/13.98 = 17502 psi The Margin of Safety in the shell is:

M.S. = F

/f,-1 = 22600 /17502

-1 = + 0.3 0 4

The weak link load path component is assessed as follous:

The ultimate shear-out capacity cf the lug is esti.ated as:

356149 (R 0_00Gi= 391764 lbs.

[l P

=

su 100000 The ultimate capacity of the lug to-cask weld is:

P., =.5486252 + 3720302 h

= 662869 lbs.

E'he re :

vertical ultinate capacity = 229596 (25/21.6)

= 372030 horizontal ultin. capacity = 338580 (35/21.6)

= 548625 The ul-inate capacity of the outer shell is:

(42000)(13.98) = 5871rin lbs.

P

=

j 1-16 L_

---

e

Ravicion 1 December 12, 1980 1.6.3 Pressure

.I A differential pressure of.5 atmosphere will be reacted by the lid and its associated closures comprised of ratchet binders for the primary lid and studs for the secondary lid.

Loads on the primary lid ratchet binders are calculated as:

P, = Ap/N ;where: A = nfD 4

P = 14.7/2 psi N=8 14*7 P,="

1697 lbs.

=

The tensile strength of the 1 inch

• ratchet binder is 45000 lbs.

Thus the margin of safety is:

450 M.S.

~ 1 " *L"#9"

=

6 Ft..r the secondary lid studs, the load is:

1. 7(29.5)

(14.7 )

= 628 lbs.

1 l

p s

4 2

8 The tensile strength of the 3/4-10UNC, AISI 303/304 studs is:

(75000)(.309) = 23125 lbs.

1 P

=

g Thus, the margin of safety is:

M.S. = 2 3125 / 62 8 -1 = +Large 1-21

Revision 1 December 12,1980 g

% PATTERSON k EXPERTS IN VERTICAL & HORIZONTAL LASHINGS R-1 v

Patterson "" '

Push-Pull l

Ratchets for Construction andladustry Workboats.

Barges.

Containership Lashings 1

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Decentgk 12,1980 R-6 EXPERTS IN VERT' CAL & HORIZONTAL LASHINGS 4 PATTERS,0N k I

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RATCHET BARREL DIMENSIONS 3

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W. W. PATTERSON COMPANY e 830 Brocket Street. Pittsburgh, Ps.15233 e 412/322 2012 1-4Sb

Rsvision 1 Deccmbar 12, 1980 For the 1.25" interior plate:

3 42000 (1.25)2 =10938 in-lb/in 6

The total edge moment capability is:

17937 in-lb/in For a circular lid of 52.5" diameter the corresponding concentrated momenu acting en 1/Sth of the edge is:

(179 37 ) (52. 5) (r)

= 3 6 9812 in-l.a M

=

g g

Thus, the gross =cment yield Margin of Safety of the lid is:

= 369812

_1 = +11.27 I'. S.

30143 It can be concluded that the binder,s and their fittings can safely react the maximum loads produced during i= pact.

The secondary lid closure studs are examined in a comparable fashion.

The studs must resist forces associated with the lid and some fraction of the payload.

Assuming a " loo'se" payload, the payload force carried by the studs can be conservatively estimated on a proportional area basis as 19% of total payload force.

Thus, the total secondary lid

stud, lead is estimated as:

R = (W w I"g ces =

P T

o 515 + (.19 ) 4 200 )

57.3 ces 42.2

= 55,248 lbs.

=

Since there are eight secondary lid studs 3/4-10 UNC, AISI 303/304.

each stud load is 6,906 lbs.

The tensile strength of the stud is:

P=FA= (30000)(.309) = 9,270 lbs.

(1 50

I Ravicion 1 December 12, 1980 Thus, the Margin of Safety of the secondary lid is:

i 9270./6906 -1 =

+0.34 l1 M.S.

=

When impacts occur on the lid end, a normal compressive load of 576767 lbs. (NuPac 50-4.0L) is transferred frcm the lid to the lid closure ring.

This load is then transferred to the cask via direct ec=pression of the lead shielding and a pair of 3/8" bevel welds.

The loaded length is:

1 = 239 Where:

R = 23.75 in.

-1 (g-)

See Appendix 1.10.2 3 = ces 5

r=R-sin =

4 5 = 1.40

== 42.2 1.40

= 28.75 sin 42.2 = 26.67 in, 6 = cos-1 (26.67) = 0.3831 rad.

.8.75 1=

(2)(28.75)(.3831) = 22.03 in.

Tne yield bearing capacity of the 1/8" x 3/4" bearing ring is:

693945 lbs.

(22.03)(3/4)(42000)

F a

=

B The associated Margin of Safety is:

M.S. =603044

-1 = +0.20 576767 The yield capability of these welds is:

(2)(22800)(22.03)(3/8)3[2

= 532,752 lbs.

F

=

g 1-51

.