ML20140C862

Certificate of Compliance 6771,Rev 6,for Model SN-1. Approval Record Encl

ML20140C862
Person / Time
Site:	07106771
Issue date:	06/11/1984
From:	Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:
Shared Package
ML20140C853	List: ML20140C849 ML20140C862
References
NUDOCS 8406190578
Download: ML20140C862 (4)

Text

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E---m4EFlinEEEMEMSMEPBTSAEfiantf2r% car" U.S. NUCLEAR REGULATcRY CCJ.llSSION j NRC FOR3 61s

+n CERTIFICATE OF COMPLIANCE

['o cFR f t FOR RADIOACTIVE MATERIALS PACKACES i

1 a CEpttFICATE NUMBER b AEvidlON NUMBER c PACKAGE iOENTIFICATION NUMBER d PAGE NUMBER e TOTAL NUMBER PAGES g

6771 6

USA /6771/B( )

1 2

Ig 2 PREAVBLE a This certif>Cate is issued to certsf y tnat the packaging and contents desCnbed m item $ below. meets the apphCable safety standards set forth in Title 10. Code of federal Regulations. Part 71

• Packaging of Radioactive Materials for Transport and Transportation of Aadioactive Matenal Under Certain Conditions '

o Trtis cert:6Cate does not reheve tne Consignor from comphance mth any requirement of the regulations of the U S. Department of Transportation or other apphCable regulatory agencies. including the government of any Country through or into which tne package wdl be transported.

B7(

F CAT 10N O E%

a e dr s e i LE AND OE AP CATION a PAEPA E GPU Nuclear Corporation Metropolitan Edison Company application 4 P.O. Box 480 dated April 27, 1981, as supplemented

$ fliddletown, PA 17057 lIl N

@f e OOCxET Nuveta 71-6771

. a cONOmONs

)

This certificate is conditional upon fulfdhng the requirements of 10 CFR Part 71, as apphCable, and the conditions specified below s

E lJ l

(a)

Packaging Il

)

l (1) tiodel No.:

SN-1 (2)

Description f

!E A shipping container for radioactive waste.

The packaging consists of lIl an outer container which is a 4-inch thick right circular cylindrical lE steel shell.

The cylinder is 80 inches in diameter and 84 inches high

I with a welded bottom plate and a cover %

cured by 24,1-1/4-inch ll diameter steel bolts with a silicone rubber 0-ring.

Impact limiters l

!a consisting of shock absorbing foam clad in 24-gauge stainless steel n

are provided at the top and bottom of the container.

The remainder of I

the cask is surrounded by a one-inch layer of canned insulation.

The ju maximum weight, including contents, is 60,000 pounds, j

(3) Drawings The packaging is constructed in accordance with SUNTAC Nuclear Corporation

J Drawing No. B-08001, Revision E; Wilson !!anufacturing Company, Inc.,

I Drawing No. 73-8333-B, Rev. A; and Rilco fianufacturing Company, Inc.,

I Drawing No. 72-A-124, Rev. O.

j

!I (b) Contents ju I

(1) Type and form of material I

I (1)

Greater than Type A quantity of radioactive material of nonfissile l

classification as process solids, either dewatered, solid or p

solidified, in leak tight secondary contciners; or I

I l

(ii)

Greater than Type A quantity of radioactive material of nonfissile I

I classification as contaminated or irradiated solid material, such l

as spent reactor internals, in leak tight secondary containers.

I (2) liaximum quantity of mterial per package.

I I

5,000 curies

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PDR g

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P==^5A AM e,

CoNDITloNS (continusd)

Page 2 - Certifi'cate No. 6771 - Revision No. 6 - Docket No. 71-6771

+

6.

For all packages containing water and/or organic substances which could radiolytically generate combustible gasses and which the radioactivity concentration per gram is greater than that permitted for low specific activity material, a determination must be made by tests and measurements of a representative package such that the following criteria are met over a period of time that is twice the expected R

' shipment tine:

R I

W i

(i) The hydrogen generated rust be limited to a molar quantity that would be no l

l nore than 5% by volume (or equivalent limits for other inflammable gases) g of the secondary 3 container gas void if present at STP (i.e., no more than g;

4; 0.063 g-noles/ft at 14.7 psia and 70'F); or f

e (ii) The secondary container andicasti cality must be inerted with a diluent to I

i assure that oxygen must be111mited to 5% by volume in those portions of the l

package which could have~ hydrogen greater than 5%.

g i t For packages to be delivered to a carrier for transport, the secondary container

,p must be prepared for shipment in the same manner in which determination for gas I

~

generation is mader s Shipment period begins when the package is prepared (sealed)

I and must be complew /. thin twye the expected shipment time.

j Shipment of radioactive waste solidified in. asphalt is not authorized.

}

!n i 7.

As required, shoring must be.placed between.the contents of Item 5(b)(1)(ii) and Y

secondary container and the secondary container (s) and.the cask _ cavity to limit N

movement during accident conditions of. transport.

j I,

?

j 8.

Prior to each shipment, the' packagingilid silicone rubber 0-ring must be inspected.

lg l

The 0-ring must be replaced with a.new silicone 0-ring if inspection shows any defects or every six (6) months, whichever occurs first.

llI x

'N i 9.

The package authorized by this certificatelis hereby approved for use under the general license provisions.of 10 CFR 571.12.

In t

l 10.

Expiration date:

July 31,1936. _

p i

N REFERENCES N

l l

! etropolitan Edison Company application dated April 27, 1981.

llI il GPU Nuclear Corporation supplenent dated:

December 20, 1982.

l l

l FOR THE U.S. NUCLEAR REGULATORY C0fitilSSION I

I I

M4&

Charles E. MacDonald, Chief I

Transportation Certification Branch I

Division of Fuel Cycle and l

Itaterial Safety, FESS y

Date:

bDl17 IF

• i I

sw i

A, UN TED STATES e

,*f1.

NUCLEAR REGULATORY COMMISSION T

' ' ' Y. '

.uSHING TON. D. O. 20555 g %2!hf f Transportation Certification Branch Approval Record-Model No. SN-1 Docket No. 71-6771 2

C(NBUSTIBLE GAS MIXTURES Co'nditions have been imposed for packages cor.taining water and/or organic substances to limit.the accumulation of radiolytically generated gases over the shippir;g period to preclude the possibility of significantly reducing the packaging effectiveness due to explosion..The conditions require a representative package be prepared as for shipment, and a 4

determination by tests and measurements be made to show that the limiting conditions are met over a time period of twice the expected shipping period.

The contents are held in' a secondary container prior to and during shipment. Tests and measurements are to be performed on the secondary containers as they will be representative of the packages -for this purpose.

The limiting conditions proposed are:

"(1) The hydrogen generated must be limited to a molar quantity that-would be no more than 5% _by volume at STP (or equivalent. limits for other inflammable gases) of thg at 14.7 psia and 70 F; orsecondary container g no more thatn 0.063 g-moles /ft 4

I (ii) The secondary container and cask cavity (if. required)-must be inerted with a diluent to assure that oxygen, including that radiolytically _

generated, must be limited to 5% by volume in' those portions of. the package which could have hydrogen greater than 5%."

a Furthermore, shipmentsmus't be completed within a time period: equal to the test period (i.e., twice the expected shipping' period), and shipment time begins.when the package is sealed.

3 Conditionz(i) limits the quantity of hydrogen to 0.0'63' g-moles /ft, but does not require any inerting of the container (air environment.is assumed).

This mixture, if ignited, could = result in a combustion reaction, but it has been shown that~such a reaction would. yield a pressure rise-of about 2.3 psig.

The limit may be satisfied by shipments exhibiting.

?sufficiently low rates tof radiolytic gas generation,' or by the use of-.a ;

recombiner device which could catalytically recombine the hydrogen / oxygen

.to produce water and. maintain a steady _ state hydrogen concentration below 5%.

e-1 4

1 i

2-

' Condition (11) requires inerting the secondary container and cask cavity with a diluent gas (e.g., nitrogen) to Ilmit the maximum oxygen concentration to 5% in any portion of the package where hydrogen may exceed 5% by volume.

It is shown that a mixture limited to 5% oxygen in any combination of hydrogen and nitrogen will not support conbustion.

Packages containing a radioactivity concentration per gram which is not greater than that pennitted for low specific activity are exempt.

Significant degratation of pter or organic wastes can occur if total accumulated doses exceed 10 rad s.

When radioactive material is solidified in cement, greater concentrations may be allowable.

Because radiation damage infonnation for asphalt is limited at this time, its shipment is not authorized, hj f&

~Y f

Char es E. MacDonald, Chief Transportation Certification Branch Division of Fuel Cycle and.

futerial Safety, NMSS Date:

4

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