ML20044F239

Rev 1 to STD-R-02-017, SAR for HN-190-2 Radwaste Shipping Cask

ML20044F239
Person / Time
Site:	07109224
Issue date:	12/20/1988
From:	SCIENTIFIC ECOLOGY GROUP, INC.
To:
Shared Package
ML20044F234	List: ML20044F231 ML20044F239 ML20261M574 ML20261M579 ML20261M583
References
STD-R-02-017, STD-R-02-017-R01, STD-R-2-17, STD-R-2-17-R1, NUDOCS 9305270237
Download: ML20044F239 (60)

Text

DEC 7 0 'e*

STD-R-02-017 SAFETY ANALYSIS REPORT FOR THE HN-190-2 RADWASTE SHIPPING CASK REVISION 1 Referencing 20CFR71 TYPE "A" Packaging Regulations STD-R-02-017 Westinghouse Radiological Services Department l

1256 North Church Street Moorestown, New Jersey 08057 l

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UNCONTROLLED COPY FOR INFORMATION ONLY 0390A:05-0301BB 9305270237 930518 PDR ADDCK 07109224 C

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' Document Numbst:

Rev:

Rev Date:

WESTINGHOUSE STD-R-02-017 1

12-20-88 HITTMAN NUCLEAR INCORPORATED

Title:

Safety Analysis Report for the 1C-190-2 "ad.raste Shipping Cask-I Prepared Checked Director Technical Quality Rev.

Rev Date By By Engineering Product Assurance Specialist Mana 6FN 0

3-31-88 l-(

8 - 09 Manager Technical Quality Design &

Product A ura e Process Specialist

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STD-R-02-017 TABLE OF CONTENTS

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PAGE 1.0 GENERAL INFORMATION 1-1 1.1 Introduction 1-1 1

1.2 Package Description 1-1 l

1.2.1 Packaging 1-1 1.2.2 Operation Features 1-2 1.2.3 Contents of Packaging 1-2 1

1.3 Appendix l-3 2.0 STRUCTURAL EVALUATION 2-1 l

1 2.1 Design Criteria 2-1 2.2 Weights and Centers of Gravity 2-1 2.3 Mechanical Properties of Materials 2-1 2.4 General Standards for all Packages 2-1 2.4.1 Chemical & Galvanic Reactions 2-1 2.4.2 Positive Closure 2-1 2.4.3 Lifting Devices 2-1 2.4.4 Tiedowns 2-7 2.5 Standards for Type B and large Quantity Packaging 2-10 2.6 Normal Conditions of Transport 2-11 2.6.1 Heat 2-11 2.6.2 Cold 2-11 2.6.3 Reduced Pressure 2-11 2.6.4 Vibration 2-11 2.6.5 Water Spray 2-11 2.6.6 Free Drop 2-11 2.6.7 Corner Drop 2-24 2.6.8 Penetration 2-24 2.6.9 Compression 2-25 3.0 THERMAL EVALUATION 3-1 3.1 Discussion 3-1 3.2 Summary of Thermal Properties of Materials 3-1 ii 039CA:65-03DIBB L

STD-R-02-017 t

TABLE OF CONTENTS (Continued) i PAGE 4.0 CONTAINMENT 4-1 4.1 Containment 4-1 4.1.1 Containment Vessel 4-1 I

4.1.2 Containment Benetrations 4-1 4.1.3 Seals and Welds 4-1 4.1.4 Closure 4-1 l

1 4.1.4.1 Primary Cask Lid Gasket 4-1 4.1.4.2 Secondary Cask Lid Gasket 4-2 4.2 Requirements for Normal Conditions of Transport 4-3 l

4.2.1 Release of Radioactive Material 4-3 4.2.2 Pressurization of Containment Vessel 4-3 4.2.3 Coolant Contamination 4-4 4.2.4 Coolant loss 4-4 4.2.5 Repair of Secondary Cask Lid Hold-downs 4-4

-i 4.3 Containment Requirements for the Hypothetical Accident Condition 4-5 4.4 Appendix 4-6 5.0 SHIELDING EVALUATION 5-1 5.1 Discussion and Results 5-1 5.2 Source Specification 5-1 5.3 Model Specification 5-1 5.4 Shielding Evaluation 5-1 5.5 Appendix 5-2

6.0 CRITICALITY EVALUATION

6-1 7.0 OPERATING P20CEDURES 7-1 7.1 Lifting 7-1 7.2 Removal / Installation of Cask Lids 7-1 i

7.2.1 Removal of the Primary Cask Lid 7-1 7.2.2 Removal of Secondary Cask Lid 7-1 7.2.3 Installation of Primary Cask Lid 7-2 7.2.4 Installation of. Secondary Cask Lid 7-2 iii 039CA:ES-030188 i

STD-R-02-017 TABLE OF CONTENTS (Continued) i PAGE 7.3 Cask Loading 7-3 I

7.4 Removal / Installation of Cask from Trailer 7-4 i

7.4.1 Cask Removal From Trailer 7-4 7.4.2 Cask Installation on Trailer 7-5 7.5 Containment Penetration Seals 7-5 7.6 Preparation for Shipment 7-5 7.7 Receiving a Loaded Cask 7-6 8.0 ACCEPTANCE AND MAINTENANCE 8-1 8.1 Acceptance Tests 8-1 8.1.1 Visual Inspection 8-1 8.1.2 Structural and Pressure Tests 8-1 8.1.3 Leak Tests 8-1 8.1.4 Component Tests.

8-1 8.1.5 Tests for Shieldit,g Integrity 8-2 i

8.1.6 Thermal Acceptance Tests 8-2 8.2 General Maintenance Program 8-2 t

8.2.1 General 8-2 8.2.2 Gaskets 8-2 8.2.3 Welds 8-3 8.2.4 Studs and Nuts 8-3 8.2.5 Ratchet Binders 8-4 i

8.2.6 Painted Surfaces 8-4 l

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STD-R-02-017 1.0 GENERAL INFORMATION 1.1 Introduction The purpose of the following document is to provide the information and engineering analysis that demonstrates the performance capability and structural integrity of the HN-190-2 Cask and its compliance with the requirements of 10 CFR 71.

I 1.2 Packaoe Descrio_ tion

]

The HN-190-2 Cask is a top-loading, shielded container designed specifically for the safe transport of Type "A" levels of radioactive waste materials between nuclear facilities and waste disposal sites. The radioactive materials can be packaged in a number of different type disposable containers.

The HN-190-2 Cask is a primary containment vessel for radioactive materials.

It cc,ists of a cask body, a primary cask lid, and a secondary cask lid being basically a top-opening right circular cylinder which is on its vertical axis.

Its principal dimensions are 81-3/4 inches outside diameter by 81-1/2 inches high with internal space of 75-1/2 inches diameter by 73-3/8 inches high.

1.2.1 Packaaina The cask body is a steel-lead-steel annulus in the form of a vertical oriented, right circular cylinder closed on the bottom end.

The side walls consist of a 3/8 inch inner steel shell, a 1-3/4 inch thick concentric lead cylinder, and a 7/8 inch thick outer steel shell. The bottom is four inches thick (two 2 inch thick steel plates welded together) and is welded integrally to both the internal and external steel body cylinders. The steel shells are further connected by welding to a concentric top flange designed to receive a gasket type seal. Positive cask closure is provided by the gasket seal and the required primary cask lid hold-down ratchet binders.

Four cask lifting /tiedown lugs are welded to the outer steel shell.

HN-190-2 casks have two (2) possible drain plug configurations. Both have the drain plug entering horizontal to the cask bottom.

These configurations allow the cask to be drained with minimum operational exposure.

l The primary cask lid is four inches thick (twc inches thick steel plates welded together) and is stepped to mate with the upper flange of the rask body and its closure seal. Three steel lifting lugs are welded to the primary cask lid for handling. The primary cask lid also contains a secondary cask lid at its center.

C393:ES-C3 MSS 1-1

m I

STD-R-02-017 The secondary cask lid is five inches thick (two 2 inch thick steel plates and one 1 inch thick steel plate welded together) and is fabricated in a design similar to the primary cask lid.

It has a gasket seal but uses eight holddown studs instead of ratchet binders to provide positive closure.

The secondary cask lid also has a lifting lug located at its center to facilitate handling.

The shipping cask has two closure systems:

(1) the primary cask lid is closed with eight high-strength ratchet binders and a flat gasket seal, (2) the secondary cask lid is closed with eight 3/4 inch studs and the same seal system used for the primary cask lid but smaller.

The shipping cask tiedown system consists of two sets of crossed tiedown cables (totally 4) and eight shear blocks or a shear ring (affixed to the vehicle load bed) designed to firmly position and safely hold the cask during transport.

The respective gross weights of the cask components and its designated radwaste loads are as follows:

Cask Body 27,800 pounds Primary Cask Lid 5,500 pounds Secondary Cask Lid 400 pounds Total Cask (Unloaded) Wgt.

33,800 pounds Maxih.Jm Payload 14,200 pounds Gross Shipping Weight 48,000 pounds 1.2.2 Operational Features The HN-190-2 radioactive waste shipping cask may include a number of required and optional accessories. These include:

cavity drain plug, vent / test connection, rain cover tiedowns, signs and mounting brackets, placards and mounting brackets, lid lift lug covers and security wires and security wire brackets.

1.2.3 Contents of Packaaina The cask contents shall consist of either of four configurations:

(1) One large disposable container; (2) Eighteen 30 gallon drums (including two 9 drum pallets for material handling);

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{3) Fourteen 55 gallon drums (including two 7 drum pallets);

c39cus-c3ciss 1-2

r DEC 201988 j

STD-R-92-017 i

(4) Eight 55 gallon drums (including two 4 drum pallets).

All internal containers have integral leak-tight seals or closure, integral lift lugs and vertical symmetrical clearances. Drums are stacked in two tiers or levels on removable pallets designed to minimize interaction between drums.

4 The contents of the various internal containers can be processed i

solids in the form of spent ion exchange resins, filter exchange i

media, evaporator concentrates, or spent filter cartridges. Materials will be either dewatered, solid, or solidified.

1 f

1.3 APPENDIX l

t The HN-190-2 radioactive waste shipping cask is constructed in accordance with Hittman Nuclear Drawing Numbers-i STD-02-080 HN-190-2 Cask Assembly I

STD-02-081 HN-190-2 Cask Body Weldment STD-02-082 HN-190-2 Cask Appurtenances l

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0290A:ES-03c188 1-3

i 0-R-02-017 2.0 STRUCTURAL EVALUATION 2.1 Desion Criteria Applicable criteria are presented for each load condition as they are examined i

in each of the following sections. All margins of safety are with respect to l

ASTM A36 steels unless otherwise noted. All casks built after December 18, i

1980, are built of ASTM A516 Grade 70 rather than ASTM A36, to take advantage of the increased yield and ultimate strengths of ASTM A516 Grade 70, as well as its superior low temperature properties.

2.2 Weiahts and Centers of Gravity Weight information is presented in Section 1.2.1.

Package center of gravity is taken to be geometric center of the package.

2.3 Mechanical Properties of Materials Pertinent mechanical properties of mate-ials are given as they are used in the following analyses.

2.4 General Standards for All Packaces 2.4.1 Chemical and Galvantic Reactions The shield is constructed from heavy structural steel plates. All exterior surfaces are primed and painted with high quality epoxy base i

paint. There will be no galvanic, chemical or other reaction among the packaging components.

2.4.2 Positive Closure As noted, the primary cask lid is secured by means of eight high strength ratchet binders. The secondary cask lid is affixed with eight 3/4 inch diameter studs. Therefore, the package is equipped with a positive closure system that will prevent inadvertent opening.

2.4.3 Liftino Devices 2.4.3.1 Packace liftina Luas The package weights used for analysis are as follows:

Empty Package 33,800 pounds Payload 14.200 counds

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Gross Weight 48,000 pounds i

c39 M:ES-c301BB 2-1

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STD-R-02-017 Assume that only two of the four Tugs are used to lift the I

package. Therefore, the maximum load per lug will be:

P = (48,000 lbs) (3 9's) /2 lugs aP P = 72,000 lbs.

From the cask certification drawing:

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r+- (o -~4 Using the Structural Methods Manual, SSD 60048R, Hughes Aircraft Co., Figure 4.4.1-1 and 4.4.1-3, given on pages 2-3 and 2-4:

W/D = 6/2.5 - 2.4 & R/D = 3.25/2.5 = 1.3 K = 1.21 Ultimate lug capability is given by:

1 Pult = K D t F s Where:

K = 1.21 t

D = 2.5 in.

t = 2.0 in.

Ftu = 58,000 psi (A-36)

Pult = {1.21)(2.5)(2.0)(58,000) i

= 350,900 lbs. (ultimate) l 039DA:05-0301ES 2-2

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Figure 4.4.1-3 Allowable Laterial-Lug Loads j

1 m o u s-c m ss 2-4 6

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STD-R-02-017 From Figure 4.4.1-2, of the above reference, the yield r

correction factor is given to be y - 1.1 or:

t Pyld - Pult y Fty/ftu

- (350,900)(1.1)(36,000)/(58,000)

- 239,580 lbs. (yield)

Margin of Safety:

H.S. - Pyld/P - 1

- 239,580/72,000 - 1

- + 2.33 Therefore, it can be safely concluded that the lug will not yield under a load equal to three times the weight of the package.

2.4.3.2 Lid liftino Luos (Primary and Secondary)

Primary Cask Lid Weight - 6,000 lbs.

Using three lugs the load per lug is:

P - (6000 lbs) (3 g's)/3 lugs P = 6000 lbs/ lug f--l'OlA.

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Where:

Fsy - 24,000 psi (yield) t = ) inch 0390A:ES-03CIBB 2-5

T STD-R-02-017 I

d - 1 inch E.M. - 1.25 inch Ps - (24,000)(2)(1)(1.25 - 1/2 cos 40')

Ps - 41,614 lbs.

Margin of Safety:

f M.S. - P /P-1 3

- 41,614/6000-1 1

1

- + 5.94 Therefore, it can be concluded that the lifting lugs for the primary cask lid are more than adequate to resist a load of three times the primary lid weight.

The secondary cask lid is lifted by one lug and must carry the following load:

P - (400 lbs) (3 g's)

= 1,200 lbs.

Ps = (24,000)(2)(.375)(.5625

.4375 cos 40*)

- 4,092 lbs.

Margin of Safety:

M.S. - 4,092/1200-1

= + L41 Therefore, the secondary cask lid is also able to react three times its weight without reaching a yield stress.

2.4.3.3 Cask tid liftino Luo Covers Since the primary and secondary cask lid lifting lugs are not capable of reacting the full weight of the package they will be covered during transit.

0390A:65-030188 2-6

i STD-R-02-017 2.4.3.4 Ultimate tid Liftino Luo Failure j

Each lug is designed to tear out at the eye prior to l

failure of the lug to skin interface.

The most critical

(

lug is the main package lifting lug.

Each lug is secured i

to the skin with approximately 62 linear inches of weld.

Its rated shear value would be l

Ps"IA j

s

- (24,000 psi)(62 in)(.50 in.)/.707

- 1,052,333 lbs.

+

r Comparing this to the lug tear out capacity of 350,900 lbs, the Margin of. Safety will be as.follows:

N.S. = 1,052,333/350,900-1

[

- + L91 l

Therefore, the lugs will not fail in a manner that would be harmful to the package integrity.

1 2.4.4 Tiedown Analysis

+

2.4.4.1 Tiedown loads The cask tiedowns consist of four cable and turnbuckle or

')

tiedown binder assemblies and shear blocks or shear ring at the cask base which firmly position and hold the cask ~

to the truck platform._ The following analysis shows the ability of the cask tiedown lugs to withstand combined loads due to a 10g longitudinal, 59 transverse and 29 vertical loads. ~

'i

[

}"

n o

i n-i 9

e x

=

~

---i!-

n e i

-~

r V

C L

E 9

m w u k

y

%s i

y

' 106.32" "33. 6 8" ' ~3 3. 68"

~

106.32" ~

i C390A:65-0301B8 2-7 i

STD-R-02-017 a

E 61.325" g p,g 69.375" 40.70" a

L 80" I

r 8"

2.4.4.2 Cask Center of Gravity The cask center of gravity is approximately at the geometric center of the cask.

C.G. - 40.70 in 2.4.4.3 Tiedown Forces Reference axes with respect to the trailer are shown on the tiedown drawing.

up - down, z; front - rear, x; side - side, y accelerations: X axis - 10 g's Y axis - 5 g's Z axis - 2 g's 2.4.4.4 Tiedown Lenoths Average tiedown lengths -

/(106.32)2+ (28.01 + 42.91)2 + (61.375)2 =

/(106.32)2 + (70.92)2 + (61.375)2 =

/(11304+5030+3767)-

/20101=141.78" 2.4.4.5 Tiedown Tensions Tiedown tensions resolved by vector direction Along X axis:106.32 Tg = 0.750 Ti 141.78 70.92 Along Y axis:

Tt = 0.500 Tt 141.78 Along Z axis:61.375 T - 0.433 T 141.78 Y

V 0390A:65-0301sa 2-8 e

STD-R-02-017 2.4.4.6 100 Horizontal tonoitudinal Force Overturning moment due to 10g along X axis

= 10 (48,000 lbs) 40.7 - 19,536,000 in-lbs.

Each rear tiedown must restrain half of the above moment or:

19,536,000 x 1/2 - 9,768,000 Tension in tiedowns 9,768,000 - 69.375 x 0.750Tp

+ (40.0 + 33.68) x 0.433Tg 9,768,000 - 52.03 Tg + 31.90 Tp 83.93 Tg - 9,768,000 Ig - 116.383 lbs.

2.4.4.7 50 Horizontal Transverse Force Overturning moment due to Sg along Y axis

- 5 (48,000 lbs) 40.70 - 9,768,000 in-lbs Each side tiedown unit must restrain half of the moment or:

9,768,000 x 1/2 = 4,884,000 in-lbs.

Tension in side cables:

4,884,000 - (69.375)(0.500)T -

t

+ (40.0 + 28.01)x0.433Tt i

4,884,000 = 34.69 T +29.45 T t

t Tt - 4,884,000/64.14 l

I - 76.146 lbs.

j t

2.4.4.8 2a Vertical Force Net vertical force = 29 - W = W j

= 48,000 lbs.

033JA:65-030168 2-9 l

f STD-R-02-017

?

I Each cable must restrain 1/4 of net vertical force 48,000 + 4 = 12,000 lbs 0.433 Ty - 12,000 lbs Ty - 27.714 lbs 2.4.4.9 Total Tension T = Tg + Tt+T y

- 116,383 + 76,146 + 27,714 t

- 220,243 lbs 61.375 Fy = 220,243

- 95,341 lbs 141.78 l

t i

106.32)2+ (70.92)2 Fh - 220,243

- 198,531 1bs i

141.78 2.4.4.10 Tiedown Luos From Section 2.4.3.1, the yield strength of the lug was calculated to be:

Pyld - 239,580 lbs From Section 2.4.4.9, each lug will experience a load of:.

j T = 220,243 lbs Therefore:

l J

p Margin of Safety - yld, )

T

, 239,580, y 220,243

- + MQ 2.5 Standards for Tvoe B and Laroe Ouantity Packaoino This section is not applicable, since the HN-190-2 Cask is not a Large Quantity or Type B Package.

4 0390A:65-030188 2-10

STD-R-02-017 l

2.6 Normal Conditions of Transport i

2.6.1 ligat Since the package is constructed of steel and lead, temperatures of i

130*F will have no effect on the package.

f 2.6.2 Cold All packages manufactured after December 18, 1980, are fabricated from ASTM A516 Grade 70 steel, which retains excellent structural 1

properties at -40*F.

Therefore, an ambient temperature of

-40*F will have no effect on the package.

l t

2.6.3 Reduced Pressure A half an atmosphere pressure will produce an equivalent internal positive pressure of 7.35 psi.

This pressure acting over the lid will produce a load of:

F = (75.5)2 (x) (7.35)/4 - 32,906 lbs.

Since there are eight binders, the load per binder will be:

P = 32,906/8 - 4,113 lbs/ binder Each binder has an ultimate strength of 85,000 lbs.

Therefore, it can be concluded that the reduced pressure will produce.

no detrimental effects.

2.6.4 Vibration All components are designed for a transportation environment. No loss of integrity will be experienced.

2.6.5 Water Soray The cask is sealed utilizing flat gasket seals with suitable hold down devices to ensure it is both water and pressure tight.

In addition, the radwaste is contained within sealed containers constructed of steel, cross-linked polyethylene or other materials in the cask cavity.

r 2.6.6 Free Droo Since the package weighs in excess of 30,000 pounds it must be able to react a one foot free drop onto any surface.

For this case, the most critical component will be the. lid closure.

D390A:f,5-030168.

2-11 i

l STD-R-02-017 t

Assuming the package is to be dropped one foot onto the corner of the long edge of the hexagonal shaped lid the impact energy will be absorbed by inelastic deformation of the steel corner. The volume of deformed steel is estimated by:

K.E. - WH K.E. - T V ss Thus:

V3 - WH/Ts Where:

K.E. - Kinetic energy of drop (in-lb)

W

= Gross Weight of Package (lb) - 48,000 lbs H

- Drop Height (in) - 12 inches T

- Dynamic Flow Stress (psi) - 45,000 psi 3

3 V

- Volume of deformed steel (in )

3 The volume of deformed steel is thus:

(48.000 lbs)(12 in) y s

45,000 psi V

= 12.80 in3 3

The deformation associated with this volume can be estimated from the following geometric expression for a triangular wedge.

2 V

= 1/2 b 2 l

s Where:

b - base - 1.41 h h - deformation (in) f f - length of hexagonal long edge - 34.44 in i

0 - Contact angle between lid and a horizontal plane 45*

=

4 i

i N

22b i

t E

83.125

i 039CA:65-030188 2-12

i STD-R-02-017 r

Solving for h:

h = 0.61 inches The correspondence deceleration for an impact force which increases with deformation may be computed as:

12 A = H/h -

,39,7g 9

0.61 2

i b

~

~

L h

45 1

/ / / / / / / / / /

I

/

I

/

/ /

a 6

0390A:55-03M 68 2-13

g STD-R-02-017 l

l

\\

I l

l l

^

i i

/

R(TVP) %

44NP N

l xxxxvxxxx e

- b O. bl..

j If we conservatively assume that the total payload and lid weight are to be solely reacted by the binders then each must carry the following-i p, (14,000 lb payload + 6,200 lb lid) 19.7 9's 8 binders i

P = 49,743 lbs/ binder The ultimate strength of the binder is rated at 85,000 lbs.

Margin of Safety:

M.S. - 85,000/49,743 - 1

- + 0.71 0390A:05-03DIBB 2'34

t STD-R-02-017 Gasket Seal Inteority The gasket design requires a protective steel spacer. The spacer is in the form of a ring and is welded to the top of the cask where the i

lid interfaces with the cask. See figure below. The lid compresses the gasket and bottoms on the spacer.

45 SIDE J S PAC E R R s N G.s2 x.sW ggo Y VELOCITY CRUSH HT, b 45*

t

\\

Cross Section of Upper Cask c39c u s-c302es 2-15

STD-R-02-017 i

h The worst case causing stress on the spacer is the top edge drop. The deceleration is greatest here and the CG is directly over the edge.

The corresponding deceleration was previously computed as 19.7.

9

[k

.a

.s 4

}

a s-p sstem or ca.=

c se,. oro,

Subtract the mass of the lid and payload, since these do not contribute to loading on the spacer.

Lid weight is 6,000 lbs, therefore net weight W 15:

net Wnet - 33,800 - 6,000 - 27,800 lbs.

[

Stress on 34.4 in. length of spacer is:

3

,P, (27,800)(19.7 g's)(cos 45*)

sP A

(0.50)(34.4)

Ssp = 22,515 psi The bearing strength of AISI 2000 steel is 90,000 psi.

Margin of Safety:

~

Therefore, the M.S.

90,000 - 1 = +3.00 22,515 Lid Attachment Strenoth To demonstrate that the lid will remain attached to the cask during a one foot side drop, the worst case situation will be considered when the impact force acts solely on the segment of the octagon shaped lid t

that protudes most from the edge of the cask shell and to which the-ratchet binder is attached as shown below:

0390A:05-03018e 2-16

W[

STD-R-02-017 A

CAM Sufn

/

N xd-' T(

,WcE

- r-

= > "

FL g

VHrW LOOK N D* * **8 #

sitt vwW The inner segment of the lid acts on the cask shell in a manner similar to a bolt shaft acting on a drilled plate. The simplified conservative approach to a complex analysis of the total internal forces caused by elastic and inelastic deformation of steel and lead acting on the shell from the lid's transmittal of impact forces is to use the conventional 40* bolt shear-out method on.the side of the cask opposite from the impact force. The major analytical difference being that the lid does not go completely through the cask as a bolt would go through a drilled hole.

5!-$[7.7)c.oe) 52632' CMK 3*stLL

[

4 0

r ym@ACT EC8tCF N s:DC VitW OF

' T A a*8m 1T ED smps:7 rosttC 2'

[ cast N.

6 sutu.

j genea 4 j

tD&C CW UD

&* Tekr86 s

m I

f k M' Gap d.c io n-.a af*er a

occurr g* V '

~

,,nx s oot vat W IMPET PDlW 0390A:ES-03DIBB 2-17

STD-R-02-017 An enlarged view of the cask shell where the transmitted impact forces act is shown below.

LIO casz sygu s

)

y sussa pp r

Y,

[

J ST8fL m

o start tgAO gg" v

i it i

i\\

streo I - susAR wur

]

g'

\\

TAAMEMsTTFD

-- 2 *-

2NmcT svaract

/

Figure 2.6.6-1 Lid Analysis The inelastic deformation caused by the 1 foot side drop will occur at the protuding lug rather than at the lid / cask interface inside the l

shell on the opposite side from tha lug, based on the following reasoning:

i

-j i

c3scA:ss-c301sa 2-18 k

STD-R-02-017 From, Pressure ForceArea, and assuming the 48,000 lb. weight at rest, 48,000 lbs the pressure at the lug is

- 9,600 psi. The pressure at 5 in 2 the lid / cask interface is 48,000 lbs - 912 psi. Since the pressure at 26.32 x 2 the lug is more than ten times that at the lid / cask interface, the lug will crush prior to shell deformation; the crush distance calculated below:

From K.E. - Ts'V s

Where T - 45,000 psi for ASTM A36 steel s

K.E.

3 V

12.80 in needed to absorb impact.

s Ts From the geometry of the protuding lug, and trial and error, the sketch below shows the instance of crush necessary for_the crushed volume to equal the 12.80 in3 "needed" volume:

i l-ibt Y ' f*-- X %

verW i ai 22.S*

l f

s SIDF

/

c T y - 1.20" VM

/

MO f'

2 2 1.20 1

x=

- 2.90,,

d >

J tan 22.50

. Raft.ett.i 3-m The volume of crushed metal is-5 V - (5" x 1" x 1.20) +2 (2.90x1.20) s 3

Vs = 12.96 in Therefore, the "g" force can be closely approximated from-Distance Dropped g, Distance Deformed 3pn g=

,,- 10.0 g's l

e j

C390A:C5-0301ss 2-19

t

[

STD-R-02-017 This is the total force acting on the opposite side of lid, or on binders if cask deforms enough to cause the vertical force on the lid to be converted into tensile force on the binders.

Cask Shell Analvets j

l Assumed if

.w..r g

\\

ll l

v' *a s

Transmitted

• "!**,'$**IO*"

From Figure 2.6.6-1, the cask ar'*" d cak shell will shear across 26.32" l

of 3/8" thick plate, 1-3/4" l

,f steel cap, and 7/8" thick pl ate.

Arc length = R = (40x) (37.7) = 26.32" 180 Shear-out Force,

48,000 x 10g Area 26.32 (0.375 + 1.750 + 0.875)

, 480,000 lbs 78.96 inz 6,079 psi

=

The Margin of Safety when compared to shear strength of A-35 material:

i (36,000)(0.40) g,3,

-1

= + 1.37 6,079 The Margin of Safety when compared to ultimate strength of A-36 material:

g,s,

. 58,000(0.40)

-1

= + 2.82 6,079 The above is conservative since it ignores the shock-absorbing contribution of the lead.

The previous calculation was based on the assumption that all the impact loading was converted into shear on the cask shell.

Due to the geometry of the shell components, and the fact that the 1" x 1-3/4" capping ring receives additional support from the entire periphery of the cask, it is assumed that only a small amount of " cantilever" type deflection will occur at the top of the cask's lip as shown below:

Possible fibilection

~

'T

[

7/S* steel

[

~

I4 lead g

= = - -

C3SDA:65-0301Es 2-20 i

f STD-R-02-017 To check this possible deflection however, a conservative approximation through the simple-beam approach will be used. The circular section of the 40* shear-out-r.rea is " flattened out" with the two ends considered fixed and conservatively ignoring that the 3/8" plate is " fixed" along the top of the cask for the full 26.32" lid / cask interface.

N y o o,,-,m m,o, o.

,,m o,

n. sa.-

3 Maximum defle-+. ion: ymax "

4EI (480,000)(26.32)3 (384)(30x106)(2x3 3) 12

- 0.169"

!!qTE: The above also conservatively assumes that the full "g" loading goes into deflection and not partially into inelastic defonnation/-

shear of the inner shell.

If the upper portion of the cask lip deflects, the deflection will convert into a tensile force acting on the binder opposite the deflection. This tensile force acting on the binder is calculated as follows:

sin 0 0.169 2

0 - 4.8*

cos.90*-4.8*) = 480,000 i C A3x steertt.

)(1f o.Iw Determak

\\

F = 412,400 (0.084)

F = 40,165 lbs.

t 40,000 lbs 1

i t

0390A:65-0301BB 2-21

STD-R-02-017 The binder is a 1-3/8" binder with a rated capacity of 85,000 lbs.

The resulting Margin of Safety is:

Margin of Safety 85,000 - 1 = +1.12 40,165 Also, this is conservative since more than one binder will share the load.

Lid Lua Analysis Calculate lid lug shear out using the dimensions given in the sketc%

below:

t i'

i

)

4,, g o

/

n p

l.GO

./ b

/./2 A4 S,4 i

Using the 40* Shear out Equation:

Psu " I 2t(E.M.-fcos40*)

su Where: F

.6 x uit strength su

=.6 x 58,000 (ult. strength ASTM A-36 Material)

= 34,800 psi t = 1 inch d = 1.12 inches

~

E.M. - 1.50 inches 1.12 P

= (34,800)(2)(1)(1.5 -

cos 40*)

su 0390A:E5-030168' 2-22

a

.=

-.4 STD-R-02-017 Psu - 75,452 psi 75,452 - 1 = +0.88 Margin of Safety = 40,165 i

The lid to lug weld strength can be analyzed as follows, assuming a weld efficiency (a) of 0.9, weld shear strength (S ) of 21,000 t

psi, and weld size of 1/2 inch:

Ft = aSt (.707)(weld size)L Ft = (.9)(21,000)(.707)(.5)(2x[3.75+1])

Ft = 63,470 lbs Margin of Safety 40,16563,470, 3. +0.58 i

Ratchet Binder Pin Attachments The ratchet binder pin is in double-shear:

(40,165 lbs load)

V m

e, 4

=

[

i d

a d

Q Snur Raud3 i

5 k

Lw-1" dia pin: A - wr2 - 3.14 x (.5)2 z

A =.79 in.2 Total shear area - 2 x.79

- 1.58 in.2 ASTM A-320 Ultimate Tensile Strength - 105,000 psi

[

Ultimate Shear Strength

- a

.6(105,000) psi

- 63,000 psi Fcapacity ((,000(1.58)

~'

Fcapacity - 99,540 lbs.

0390A:Es-o301ss 2-23

ST3-R-02-017 99,540 Therefore, Margin of Safety 40,165 1.48 Hax Deflection of Pin (Bendino) m t

F23 xD 4 W

Ymax " 3EI 64

~

< k 4* /. f k i

, 40,165 (1.5)3 3(30x10)Sx(1)4 1

64 r

i

,40,165(3.37)64 3(30x106)(3.14159) 4 ymax = 0.031 in.

Secondary Cask Lid Stud Analysis The stress in the secondary cask-lid studs can be determined by assuming that the payload and lid weight total.of 14,400 lbs; that there are eight 3/4-inch studs restraining the lid; that the lid experiences 19.7 g's; and the yield stress (Ttyp) of the A-320 studs is 105,000 psi:

l I

J 0390A:65-030188 2-24 i

STD-R-02-017 t

?

t i

t i

FR = W x g x cosp FR = 14,400 x 19.79 x.707 FR = 200,562 lbs. acting on secondary cask lid Typical root area for 3/4" dia. studs:

A = nr2 - 3.14 (0.314)2 A = 0.310 in.2 Load carrying capacity of 8 studs, equally sharing load:

Fc"Otyp Ax8 Fc = (105,000 lb/in.2)(0.310 in )(8) z Fc = 260,189 lbs.

i 260,189 Margin of Safety -

- 1 = +0.30 200,562 Therefore, it can be safely concluded that the package can survive a one foot drop.

i 2.6.7 Corner Droo This requirement is not applicable since the HN-190-2 is fabricated of

[

steel.

i.:

2.6.8 Penetration Impact from a 13 pound rod will have no effect on the p~ackage.

f 0390A:ES-0301se 2-25

.i t

STD-R-02-017 2.6.9 Compression l

Th;s requirement is not applicable since the package exceeds 10,000 t

pounds.

Conclusion From the above analysis, it can be concluded that the HN-190-2 Cask is I

in full compliance with the requirements. set forth in 10CFR71 for Type j

"A" Packaging.

i t

i i

f i

9 2

)

'l i

i I

i i

• -'4 9

0390A:ES-0301es 2-26

STD-R-02-017 3.0 THERMAL EVALUATION 3.1 Discussion The HN-190-2 cask will be used to transport waste primarily from nuclear power plants. The principal radionuclides to be transported will be Cobalt-60 and Cesium-137. The shielding on the cask will limit the amount of these materials that can be transported as follows:

Specific (3)

Total (2)

Isotope Enerav Activity Activity (mev)

(pCi/ml)

(Ci)

Cobalt - 60 1.33 5.00 19.25 Cesium - 137 0.66 0.66 2.53 (1)

Based on cement solidified waste at 10mR/hr dose rate at six feet distance from the cask.

(2)

Based on 136 cubic feet of cement solidified material.

3.2 Summary of Thermal Properties of Haterials With the maximum amount of these materials that can be transported in the HN-190-2 cask, the decay heat generated by the waste will be as follows:

Heat Total Generation Activity Total Decay heat (watts / curie)

(curies)

(Watts)

(BTU /hr)

Cobalt-60 0.0157 19.25 0.302 1.029 Cesium-137 0.0048 2.53 0.012 0.0411 The weight of waste per shipment will be about 14,000 pounds.

Based on a specific heat for concrete of 0.156 BTU per lb. degree F.,

2185 BTUs would be required to heat the waste one degree Fahrenheit. The total decay heat (BTU /hr) as calculated above is 1.0701. At that rate it will take 2042 hours0.0236 days <br />0.567 hours <br />0.00338 weeks <br />7.76981e-4 months <br />

(: 85 days) to raise the concrete temperature through 1*F.

This decay heat generation is insignificant.

4 0390A:05-C3D18B 3-1

DEC 2 0 ime STD-R-02-017 i

4.0 CONTAINMENT i

4.1 Containment Boundary The HN-190-2 shipping cask is a vessel which contains the radioactive material (inside secondary waste containers) and provides primary containment and isolation of the radioactive material from the atmosphere while being transported.

4.1.1 Containment Vessel The cask is an upright circular cylinder composed of two layers of structural steel with lead for radiation shielding between the steel sheets. The lamina are a 3/8 inch inner shell, a 1-3/4 inch lead shield and a 7/8 inch outer steel shell. The heavy steel flange connecting the annular steel shells at the top provides a seat for a neoprene flat gasket seal used to provide a positive atmospheric isolation when the lid is closed by tightening the eight (8) ratchet binders which are equally spaced at 45' intervals on the outer circumference of the cask. The secondary cask lid is located in the center of the primary cask lid, has a neoprene flat gasket seal, and is bolted to the outer portion of the lid with eight (8) equally spaced 3/4 inch studs on a 20-7/8 inch diameter circle.

4.1.2 Containment Penetrations The HN-190-2 cask is provided with a drain line which is sealed with a pipe plug.

Its use is for the removal of entrapped liquids, such as rain or decontamination fluids.

The HN-190-2 cask may also be provided with an optional vent / test connection which is sealed with two pipe plugs and a stepped lead plug.

4.1.3 Seals and Welds Both the primary cask lid and the secondary cask lid are sealed by i

means of a neoprene flat gasket seal.

4.1.4 Closure 4.1.4.1 Primary Cask Lid Gasket Determine the amount of compression of the primary cask lid gasket due to tightening of the ratchet binders:

i Gasket 0.D. = 77.75 inches I.D. - 76.25 inches Area - x (R z -R$)

l 2

o 0390A:E5-030188 4-1

[

DEC 201998 STD-R-02-017 2

2

- x (38.875 - 38.125 )

= 181.43 inz Gasket is 3/8 inch thick by 3/4 inch wide Durometer 40 I

Neoprene.

Based on past experience from the manufacturer, a torque of 175 to 200 ft-lbs exerted on the handle of the ratchet h

binder will develop about 3,500 pounds of tension in the binder.

Therefore, force downward on lid compressing the gasket F = (8 binders)(3,500 lb/ binder) + 6,000 lb weight F = 34,000 lbs Equivalent pressure of gasket:

E = 34,000 lbs/181.43 in = 187 psi 2

A As shown on Appendix 4.4, the compression of the primary lid gasket is 20% of the gasket thickness, or about 3/32 l

inch.

4.1.4.2 Secondary Cask Lid Gasket Similarly, the compression for the secondary cask lid is calculated.

Based on the stud torquing procedure for the secondary cask lid, the minimum torque value is 120 ft-lb.

The gasket dimensions are 22.125 in. OD, 19.625 in. ID, and 3/8 in. thick.

The gasket is Durometer 50 Neoprene.

2

?

Area = x (R

-Rj) g 2

2

= x (11.063 - 9.813)

= 81.98 in?

Downward force on the gasket is the sum of the weight of the lid plus the tensile force of the studs (P).

P=

= (120 ft-lb)(12 in/ft)/(0.15)(0.75 in)

= 12,800 lb/ stud c390A:ss-03cles 4-2

DEC 201988 STD-R-02-017 r

PT = (12,800 lb/ stud)(8 studs) = 102,400 lbs W = 400 lbs Total Force = 102,400 + 400 = 102,800 lbs Pressure on gasket E = 102,800 lbs/81.98 in = 1254.0 psi 2

A As shown on Appendix 4.4, the compression of the secondary cask lid gasket is 33% of the initial thickness or 1/8 inch.

4.2 Recuirements for Normal Conditions of Transport 4.2.1 Release of Radioactive Material The inner steel shell is designed to act as a pressure vessel when the cask lid is in place and tightened. As shown in Section 2.6.3 the cask will withstand an internal pressure of 7.35 psig. The nature of the waste being transported is such that phase change or gas generation which could over-pressurize the cask will not occur. The stepped flange surface at the end of the cask body has been designed to minimize effects of columnated radiation streaming and problems associated with gasket damage during impact.

If the cask is pressurized to 7.35 psig, the resultant force on each ratchet binder (as calculated in Section 2.6.3) is 4,113 pounds.

l The resultant strain on the steel ratchet binder (1-3/8" diameter) is:

6 P/AE = (5,216)/(1.485)(30 x 10 ) = 0.000117 in./in.

P = 4,113 + 1,100 - 5,213 lbs A = Area of 1-3/8" minor diameter = 1.485 inz E = Youngs Modulus = 30 x 106 psi and for a 24 inch long binder, total strain is:

(24 in.)(0.00017 in./in.) = 0.0028 in This is less than 3% of the initial compression of the gasket. This decrease in the initial compression is too small to break the seal or significantly reduce the package effectiveness.

4.2.2 Pressurization of Containment Vessel 1

Due to the nature of the waste contents, no significant generation of variors or gases can be predicted to pressurize the vessel such that the package effectiveness would be reduced.

j c39aus-c301ss 4-3

STD-R-02-017 4.2.3 Coolant Contamination The vessel contains no primary coolant, therefore this section is not applicable.

4.2.4 Coolant loss The vessel contains no primary coolant, therefore this section does not apply.

4.2.5 Repair of Secondary Cask Lid Hold-downs l

The possible repair procedures listed on the referenced drawing provide 3 methods of repairing or replacing a stud by modifying the tapped hole.

In all cases, the modification provides an as-strong or stronger assembly than the original design.

"A.

Heli-coile Insert" The Heli-coil insert consists of a helical wound wire (diamond shaped cross-section) which reduces the threads of a slightly oversized tapped hole. As shown below, the Heli-coil assembly has a higher yield load point than the stud.

Secondary Lid - A 3/4" diameter Heli-coil inserted 1 inch has a-tensile load capacity of 63,500 lb., the 3/4" ASTM A-320 Grade L-7 stud has a tensile capacity of 38,600 lb.

"B.

Increase death of tan drill and retao aooropriate lenoth" -

This method of repair includes using the same diameter stud, however increasing its length. The question to be addressed is to determine the increased elongation from torquing and internal pressure (4.2.1 of SAR).

The secondary cask lid stud tension from initial torquing and internal pressure of 7.35 psig is 12,145 lb/ stud.

If the length of the stud is increased from 1.25 in. to 2.25 in.,

6 PL,

(12,145)(2.25)

~

= 0.003 in.

AE (x/4)(0.627)2 (29xl@ )

Both elongations calculated are very small and not enough to break the gasket seal or significantly reduce the package _ effectiveness.

"C, Drill and Tao (1/8" larcer diam.) NC - Rebore hole in lid for t

clearance."

~

Replacing the present stud with a larger diameter stud improves the strength of the lid hold downs.

c390A:65-030188 4-4

STD-R-02-017

~

4.3 Containment Requirements for the Hypothetical Accident Conditions This section does not apply since the vessel is not a Type B package.

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STD-R-02-017 4.4 APPENDIX Gasket Compression Nomographs t

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STD-R-02-017 5.0 SHIELDING EVALUATION 5.1 Discussion and Results The analysis was performed using the SPAN 4 computer code. This code, developed by the U.S. Atomic Energy Commission, is under limited distribution regulations, detailed descriptions of the code calculations are prohibited by the government.

5.2 Source Specification i

The primary analytical parameter during the analysis was the Department of Transportation shipping limit of 10 MR/hr at a distance of two meters from the cask surface.

Packaging conditions of both solidified waste and dewatered resin were considered. The allowable contents are shown both in terms of the specific activity of the waste form, and the surface radiation levels (for the large containers).

5.3 Model Specification SPAN 4 calculates gamma-ray flux in rectangular, cylindrical and spherical geometries by integrating appropriate exponential kernals over a source distribution. The shield configuration is flexible; a first-level shield mesh using any one of the three geometries is specified.

Regions of this same geometry or of other geometries having their own (finer) meshes, may then be embedded between the first-level mesh lines defining second-level shield meshes. This process is telescopic; third-level shield meshes may be embedded between second-level meshlines in turn. All meshes may have variable spacing.

Sources may be located arbitrarily with respect to any shield mesh.

All kernals used assume exponential attenuation.

By ray training, the straight-line distances between points in the source and close points are found to be used in calculating the attenuation.

Integrals are evaluated by Gouss-Lengendre or Lobatto quadrature. Accuracy is dependent on the accuracy of the library data and on the orders of quadrature used.

5.4 Shieldina Evaluation The graphs presented in Appendix 5.5 document the shielding capabilities of the HN-190 casks as analyzed by the SPAN 4 computer code. The specific activity is l

given in #Ci/ml; for ease of use the usable waste volume of the container is given below.

1 0390A:6E D301BB 5-1

STD-R-02-017 r

Maximum Dewatered Resin Container Usable Volume (cf)

Prior to Solidification (cf)

HN-190-2 136 (125.4)*

103 1

Drum 7.3

• Volume in parenthesis represents a maximum solidified waste volume that is less than usable volume due to weight limitations.

5.5 Accendix Shielding Capabilities 5.5.1 Cask Specific Activity as a Function of Gamma Decay Energy for Hittman Nuclear Radwaste Shipping Cask, Design HN-190-1 and -2.

5.5.2 Dose Rate at Side of Bare Liner as a Function of Gamma Energy for Hittman Nuclear Radwaste Shipping Liner, Design HN-190.

5.5.3 Cask Specific Activity as a Function of Gamma Decay Energy for Hittman Nuclear Radwaste Shipping Cask, Design HN-190- 1 and -2 (Drums).

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IITT7 MAN WilCf.1%H RAIWANTP Sit!PPINC I'NIR 10 DESIM m.190 f

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D-R-02-017

6.0 CRITICALITY EVALUATION

Not applicable for the HN-190-2 cask. f 1 9 b 6 -e-1 I c39cA:cs-03ase 6-1

STD-R-02-017 7.0 OPERATING PROCEDURES This section describes the procedures to be followed in using a HN-190-2 cask. Any maintenance activity, such as inspections, lubrication, gasket replacement / repair, etc. described in this section is described in more detail l in Section 8.2, General Maintenance Program. 7.1 Liftina 7.1.1 The cask shall always be lifted using the four (4) provided lifting lugs only. The lifting lugs are the vertically oriented lugs spaced l at 90' around the cask circumference. 7.1.2 The primary cask lid lifting lugs shall only be used to lift the cask lid (primary cask lid with secondary cask lid installed) or the primary cask lid alone. The secondary cask lid lifting lug shall only be used to lift the secondary cask lid. 7.2 Removal / Installation of Cask Lids 7.2.1 Removal of the Primary Cask Lid for Cask Lid) 7.2.1.1 Release each ratchet binder handle from its storage position. 7.2.1.2 Engage the flip block to the sprocket wheel in the direction necessary to loosen the ratchet binder. 7.2.1.3 Loosen the ratchet binder by pulling the handle in the appropriate direction. 7.2.1.4 Remove the retaining pin from the upper ratchet binder pin and then remove the upper ratchet binder pin. s 7.2.1.5 Remove the three (3) primary lid lifting lug covers. 7.2.1.6 Using the three (3) primary lid lifting lugs, suitable rigging and exercising caution in the handling of the primary lid due to possible contamination of the underside of the lid, remove the primary lid. 7.2.2 Removal of Secondary Cask Lid 7.2.2.1 Remove the secondary cask lid holdown stud nuts. l ~ 7.2.2.2 Remove the secondary cask lid lifting lug cover. 1 c3 m :ss-ca m e 7-1

F DEC 20123 l STD-R-02-017 l i 7.2.2.3 Exercising caution due to the possible contamination of the underside of the secondary cask lid, remove the secondary cask lid. i 7.2.3 Installation of Primary Cask Lid f 7.2.3.1 Prior to installation, inspect gasket for the following: a. Gasket fully secured to the cask. b. Gasket not cut, ripped or gouged. c. Gasket is resilient. I d. Gasket is free of debris, dirt and/or grease. 7.2.3.2 Prior to installation, verify that the date of gasket i change reflects compliance with the annual change ~ requirements for the cask. 7.2.3.3 Using the three (3) lifting lugs on the primary ' cask lid and suitable rigging, lift and place lid on cask using j alignment guides to ensure proper positioning. Exercise caution not to damage gasket. ~, r 7.2.3.4 Secure the primary cask lid to the cask as follows: Install the upper ratchet binder pin through the a. upper ratchet binder connector and the lid closure lug. b. Tighten the ratchet binder by engaging the flip block to the sprocket wheel and rotate the r:tchet binder. Torque to 175-200 ft-lbs. 'l j c. Disengage the flip block. Rotate and secure the handle to its storage position. d. Install the three (3) primary cask lid lifting covers. i 7.2.4 Installation of Secondary Cask Lid 7.2.4.1 Prior to installation, inspect gasket for the following: [ a. Gasket fully secured to the primary lid. l b. Gasket not cut, ripped or gouged. c. Gasket is resilient. 0390A:ss-c3cles 7-2

DEC ? C 'c== STD-R-02-017 d. Gasket if free of debris, dirt and/or grease. 7.2.4.2 Prior to installation, verify that the date of gasket change reflects compliance with the annual change requirements for the cask. 7.2.4.3 Using the one (1) lifting lug on the secondary cask lid and suitable rigging, lift and place lid into the opening on the primary cask lid. Use alignment pins to ensure proper positioning. Take care not to damage gasket. 7.2.4.4 Install the secondary cask lid stud nuts and torque to 120-135 ft-lbs. 7.2.4.5 Install the secondary cask lid lifting lug cover. 7.3 Cask loadino 7.3.1 Survey empty cask and the vehicle carrying it to determine the loose and fixed contamination levels. Limitations pertaining to contamination levels shall be defined by regulations imposed on the user by the applicable governing bodies. 7.3.2 Inspect cask lid fasteners to ensure that all are present and undamaged. 7.3.3 Check to ensure that cask lid (primary and secondary) lifting lug covers are with the cask. 7.3.4 Remove primary cask lid in accordance with Section 7.2.1. 7.3.5 Remove secondary cask lid in accordance with Section 7.2.2, if required. 7.3.6 Inspect interior of cask for standing water. NOTE: Water must be removed prior to shipment. 7.3.7 Inspect interior of cask for obstructions to loading. 7.3.8 Inspect interior of cask for defects which.might affect the cask-integrity or shielding afforded by the cask. 7.3.9 If loading drums on drum pallets, proceed as follows: a. Load drums on each pallet. b. For maximum shielding, position higher dose rate drums in the center of the pallet and toward the front and rear of the-trailer. 0390A:05-0301BB 7-3

1 STD-R-02-017 c. Place slings arcund er along side drums to prevent pinching or damage to the slings by the lids or top pallet in the cask. 4 d. Place the loaded pallets in the cask. For the cask lids removed for the loading process, e. inspect cask lid gaskets, install lids and secure as described in respective sections. 7.3.10 If loading preloaded containers, proceed as follows: a. Ensure all lids, plugs, caps, etc. are installed on container. b. Place container into the cask. Install shims / storing between container and cask as necessary to i c. secure the container in position. e d. For the cask lids removed for the loading process, inspect cask lid gaskets, install lids and secure as described in respective sections. 7.3.11 If loading into container inside cask, proceed as follows: a. Place empty container in the cask. b. Install shims / shoring between container and cask as necessary to secure the container in position, Inspect primary cask lid gasket, install and-secure primary cask c. lid as described in respective section. I d. Load the waste into the container through the secondary cask lid opening. e. Install the liner lid, plugs, caps, etc. onto the container. f. Inspect secondary cask lid gasket,. install and secure secondary cask lid as described in respective section. 7.3.12 Install the tamper-proof seals on the cask lids. 7.4 Removal / Installation of Cask from Trailer 7.4.1 Cask Removal From Trailer i 7.4.1.1 Loosen tiedown binders / turnbuckles as necessary to remove pins from shackles at the cask end of tiedown systems. 0390A:65-030168 7-4

I STD-R-02-017 7.4.1.2 Remove pins from shackles. 7.4.1.3 Using four (d) cask lifting lugs and suitable rigging, lift cask off trailer. HQIf: Do not use cask lid lifting lugs to lift the cask. 7.4.2 Cask Installation on Trailer 7.4.2.1 Using four (4) cask lid lugs and suitable rigging, lift cask and place cask in proper position within the shear blocks or ring. HQIE: Do not use cask lid lifting lugs to lift the cask. 7.4.2.2 Inspect tiedown lugs and shackles on cask and trailer for cracks and wear which would affect their strength. 7.4.2.3 Inspect tiedown cables to ensure they are not damaged (crimped, frayed,etc.) 7.4.2.4 Inspect tiedown binders / turnbuckles to ensure they are in proper working condition. 7.4.2.5 Install a shackle through the cask end of each tiedown cable and attach the shackle to the cask tiedown lug. 7.4.2.6 Tighten tiedown binders / turnbuckles as necessary to secure cask on trailer. 7.5 Containment Penetration Seals If the tamper-proof seal on the cask cavity drain line or the optional vent line has been removed, the pipe plug used to seal that line must be removed and properly reinstalled. Installation of the pipe plugs used to seal the cavity drain line and vent line shall be done using a pipe joint sealing compound. Pipe plugs shall be torqued to 20 ( 2) ft-lbs. Immediately after installation of the plug a new tamper-proof seal shall be installed. 7.6 Preparation for Shioment 7.6.1 Perform radiation surveys of cask and vehicle, including a determination of surface contamination, to ensure compliance with 10CFR71.47 and 10CFR71.87 and complete the necessary shipping papers, certifications, and checklists. 7.6.2 Placard vehicle and label cask as necessary. C393A:65-03018e 7-5

L i i STD-R-02-017 [ 7.7 Receivino a Loaded Cask 'The receiver, carrier and shipper are to follow the instructions of 10CFR20.205 when a package is delivered. These instructions include surveying the external surface of the cask for radioactive contamination. i i 5 t . 6 h 1 i i i 0390A:ES-030188 7-6 l

i t - 017 8.0 ACCEPTANCE AND NAINTENANCE 8.1 Acceptance Tests Fabrication of the HN-190-2 cask meets the requirements of Subpart D of 10CFR71. Fabrication is implemented and documented under a Quality Assurance program in accordance with the applicable requirements of 10CFR71, Subpart H. 8.1.1 Visual Inspection The packaging shall be inspected visually for any adverse condition in materials or fabrication using applicable codes, standards, and drawings. Materials are specified under the ASTM code. Weld procedure and welder qualifications are in accordance with ASME Section IX or AWS Dl.1 as applicable. Prior to painting, non-destructive testing of welds is accomplished as described in the cask drawings. 8.l.2 Structural and Pressure Tests After fabrication is complete, the cask assembly is subjected to a pneumatic pressure test of 8 psig (-0 psig, +1.0 psig). The cask is visually inspected after the pressure test. The acceptance criterion is no change has occurred to the cask as a result of the test. 8.1.3 leak Tests A leak test of a sensitivity of at least 10~3 STD cc/sec shall be performed using a test fixture (with calibrated pressure gauge and pre-set relief valve) mounted into the cask body drain plug cavity or the lid vent line. Air is introduced at a maximum rate of 0.5 psig/ min until the test pressure of 8 psig (-0 psig, + 1.0 psig) is reached. All joints on the test fixture, primary lid and secondary lid gaskets are bubble tested. The pressure in the isolated cask is also monitored for at least 30 minutes. The acceptance criteria are: - No leaks evidenced by the bubble solution. - No pressure loss over a 30 minute time frame. The system will be depressurized at a rate not exceeding approximately 2 psig/ min, the test fixture removed and the drain or vent line plug reinstalled. The installation of the plug is to be done in accordance with Section 7.0. 8.1.4 Components Tests 8.1.4.1 Gaskets Prior to painting, seating surfaces are to have a 125 RMS minimum finish. Leak testing (See Section 8.1.3) of the cask will be final acceptance for gasket design. CH0A:ES-0301BB 8-1

i R i STD-R-02-017 i 8.1.5 Test for Shieldino Inteority [ Upon completion of the lead shielding pour, a gamma scan is done of the cask wall to "erify lead thickness and the lack of any voids or impurities in the poured lead. The gamma scan procedure contains acceptance criteria for verification that lead thickness is not less than 1-5/8 inches. All gamma scanning will be conducted on a 4 inch grid system. 8.1.6 Thermal Accentance Tests No thermal acceptance testing will be performed on the HN-190-2 cask. r 8.2 General Maintenance Proaram 8.2.1 General Maintenance and repair of the HN-190-2 cask is controlled by the Westinghouse Radiological Services Division Quality Assurance program. The casks and trailers annually undergo three (3) routine-I technical inspections. These inspections are proceduralized in cask maintenance and repair procedures. 8.2.2 Gaskets i 8.2.2.1 Gaskets shall be inspected for resiliency and complete adhesion to the appropriate surface during each use of the respective lids. 8.2.2.2 Gaskets in good condition but not adhered to the appropriate surface shall be reattached as follows: i Gently pull gasket away from its normally secured a. location until it cannot be removed further without damaging the gasket. b. Remove residual adhesive from the appropriate surface. Clean with solvents which are recommended by the adhesive manufacturer's instructions. c. Reapply gasket adhesive to the gasket and appropriate surface and reattach in accordance i with the-adhesive manufacturer's instructions. 8.2.2.3 Gaskets which cannot be sealed or are obvicusly damaged must be replaced in their entirety. Damage may include cuts, nicks, chips, indentations, or any other defect apparent to the naked eye which would affect sealing integrity.. Removal of the gasket, preparation of the_ lid 03scA:ES-03ctse 8-2 i

STD-R-02-017 surface, adhesive use and gasket installation shall be l performed per Section 8.2.2.2. L 8.2.2.4 All gaskets shall be replaced after 12 months of installation on the cask regardless of apparent conditon or cask usage. 8.2.2.5 A leak test, according to Section 8.1.3, shall be performed at least once within the twelve (12) months prior to any use. 8.2.2.6 Any painted surface in contact with the gasket shall be I maintained in good condition. Any loose, chipped, or scratched painted surfne which would affect seal integrity shall be repaired prior to further cask use. 8.2.3 Welds 8.2.3.1 All welds have been completely checked in accordance with ASME Code requirements using visual, magnetic particle and radiographic methods during fabrication. The cask drawing delineates these inspections. In-use inspections should not be required unless the cask has been involved in an accident or has been lifted improperly or in an overloaded condition. In those cases, inspection shall include the following: a. Drop or accident: All accessible cask body and lug welds and primary lid ratchet binder lug welds shall be magnetic particle inspected in accordance with ASME Code Section III, Division I, Subsection NB, Article NB-5000 and Section V, Article 7. These inspections may be performed with the painted finish in place. b. Improper or overloaded lift: All welds on the cask primary or secondary lid which were in use at the time of the improper or overload lift shall be magnetic particle inspected per the requirements delineated above. 8.2.3.2 Whenever welding to the cask is required it shall be performed utilizing weld procedures and welders qualified in accordance with ASME Code Section IX requirements. ~ 8.2.4 Studs and Nuts 8.2.4.1 All studs and nuts shall be inspected during each' removal of the secondary lid and superficially with each cask use. Replacement shall be made if the following conditions are present: cmA:f,5-Omss 8-3

STD-R-02-017 a. Deformed or stripped threads. b. Cracked or deforemed hexs on nuts. c. Elongated or scored grip length area on studs. d. Severe rusting or corrosion pitting. 8.2.4.2 In general, all studs and nuts shall be inspected for damage at least once a year under normal usage conditions and replaced when the conditions delineated in Step 8.2.4.1 are present. 8.2.5 Ratchet Binders 8.2.5.1 The ratchet binders are designed for long term use with minimal maintenance. They are inspected for satisfactory operation and general condition before each use. 8.2.5.2 Filling of the lubricant reservoir is accomplished very infrequently on an as needed basis using standard automatic chassis lubricant. A lubricant reservoir is provided. Dry threads or hard operations will, indicate the need for additional lubricant. 8.2.5.3 Any ratchet binder which received impact or suspected overloading in an accident must be completely disassembled. and inspected or replaced. Causes for rejection during a damage inspection shall include: a. Cracks in the jaws or joining bolt. i b. Deformation of the jaws or joining bolt. c. Excessive rust or corrosion pitting in the threads of the jaw or joining bolt. 8.2.6 Painted Surfaces i 8.2.6.1 Painted surfaces shall be cleaned using standard commercial equipment, chemical solutions, and procedures. 8.2.6.2 Chipped or scratched surfaces which could affect seal integrity shall be repainted prior to further cask use. Other. chipped or scratched surfaces shall be repainted at the time of the next routine technical inspection referenced in Section 8.2.1. 8.2.6.3 Guide stripes and cask identification markings shall be repainted when they are chipped, peeled off, faded or - illegible. 039CA:65-C3C188 8-4 f ~-

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