ML20236H100
| ML20236H100 | |
| Person / Time | |
|---|---|
| Site: | 07109786 |
| Issue date: | 10/30/1987 |
| From: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | |
| Shared Package | |
| ML20236H093 | List: |
| References | |
| NUDOCS 8711030434 | |
| Download: ML20236H100 (5) | |
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f mi m m M AOME m M M~M[ g $ M JECM M f M W M k M U.S. NUCLEAR REGULATORY CoMMIS$ ton f senc roatia ets CERTIFICATE OF COMPLIANCE in
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' FOR RADIOACTIVE MAYEHlALS PACKAGES 5
D REVISION NUMBER c PAC AG DE F CA I UMBER d PA E NUMBER
- e. TO AL NUMBER PAGl$
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- c. This certifica:e is issued to certif y that the packaging and contents cescribed in item 5 below, meets *he appLcable safety standards set f orth in Titte 10. Code IE
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- of Federal Regulations. Part 7f,
- Packaging and Transportation of Radioactive Material" b This Certificate does not rebeve the consignor from comphance with any requirement of the regulations of the U S. Department of Transportation or other I
NJ cpphcable regulatory agencies, including the government of any country through or mto which the package will be transported.
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CAT ON AP ICATION v:
U.S. Department of Energy S3G Core Basket Disposal Container E:
Division of Naval Reactors Safety Analysis Report for Packaging F
l Washington, DC 20545 dated June 1980, as supplemented f
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71 9786 p:
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- Tnis certivicaie is condiiionai upon fuifiihng ine requirements of io crR part ri. as appncabie and ine conditions specified beiow.
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F (a)
Packaging p!
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l (1) Model No.:
S3G Core Basket Disposal Container Assembly i
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(2) Description
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The package consists of either one irradiated $3G, SIC or S7G core t l' basket packaged in an inner, lead-filled container (S5W Core Basket t
Pemoval Container (CBRC)) which is placed inside on outer container lf, (53G Core Basket Disposal Container (CBDC)).
The package weighs approximately 172s000 pounds.
t The S3G CBDC is a 4-inch thick steel cylinder, 89 inches in outside 1
diameter, 131 inches lcrg, with an 8-inch thick top end plate and a j:
5-inch thick bottom end plate.
Both end plates are welded to the cylinder with full penetration welds, d
d The S5W CBRC which will be disposed of along with the outer S3G CBDC and R
inner core basket, is basically a cylindrical shaped container comprised
?j of lead shielding sandwiched between two 304 stainless steel shells. The l; !
1-inch thick inner shell is 60 inches 0.D. and 107.5 inches long.
The yj outer shell is made up of two geometries, a 72.5-inch 0.D., 0.5-inch h {i h:
thick cylindrical shell that measures 66 inches long and joins a truncated conical shell which has a 64-inch 0.D. at the small end.
The hl two shells are joined by a full thickness penetration weld and a weld ti j backup strap on the inside shell surface. Full penetration welds are d4 also made on both ends of the shells to the top canning and shield ring.
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B711030434 871030 p:
[DR ADOCK 07109786 g
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CONof TtoNS (continuid) i Page 2 - Certificate No. 9786 - Revision No. 1 - Docket No. 71-9786 l
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l 5.
(c)
(2) Description (continued)
The S5W CBRC will contain either an S3G, SIC or S7G core basket.
The l
irradiated S3G core basket is an Inconel 600 cylindrical shell. Three,
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3-inch thick 304 stainless steel plates are positioned in the core basket I
prior to removal to provide overhead radiation shielding.
The lower plate is 46.2 inches in diameter.
The upper plates have the same g
diameter but contain six extensions that fit inside recessed cutouts g
within the core basket.
The total core basket weight is approximately g
9,650 pounds.
l The SIC core basket'is a'304 stainless steel cylindrical shell positioned inside a 304 stainless steel thermal shield. The overhead shielding a
consists of a set of 2-inch thick 304 stainless steel plates attached to l
the SIC core basket to provide radiation shielding during handling.
The core basket weight is approximately 8,523 pounds.
The S7G core basket is an Inconel 600 cylindrical shell. A 304 stainless steel laminated plate (8-inches thick) with lifting attachments is attached to the top of the S7G CB to provide radiation I
shielding during handling.
The core basket weight is approximately 8,873 pounds.
j (3) Orawings I
The packaging is constructed in accordance with Bettis Drawing No.
1527E40 for the S3G Core Basket Assembly and KAPL Drawing No. 152D7009 for the SIC Core Basket Assembly and KAPL Drawing No. 232B4874 for the S7G Core Basket Assembly.
(b) Contents (1) Type and form of material l
An irradiated core basket either the S3G, SIC or S7G and SSW CBRC.
The l
shipment may include surface contamination in the form of activated l
corrosion products and for the 53G core basket approximately 8 gallons of J
residual water.
j (2) Quantity of material in package j
1 One irradiated core basket and S5W CBRC as described in 5(b)(1). Surface J
contamination not to exceed 20.6 curies for the S3G core basket, 7.45 curies for the SIC core basket or 1.2 curies for the S7G core basket.
j The activation level of the irradiated S3G core basket is not to exceed 131,000 curies; the irradiated SIC core basket not to exceed 20,000 l
curies, and the activation level of the irradiated S7G core basket is l
l not to exceed 140,000 curies.
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CONDITIONS (continu1d) fI Page 3 - Certificate No. 9786 - Revision No. 1 - Docket No. 71-9786 i
1 6.
Shipment of an irradiated S3G core basket must be made no earlier than 75 days
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after reactor shutdcwn.
ll l 7.
Shipment of an irradiated SIC core basket must be made no earlier than 60 days after reactor shutdown.
8.
Shipment of an irradiated S7G core basket must be made no earlier than 180 days after reactor shutdown.
9.
Expiration date: August 31, 1991.
REFERENCES S3G Core Basket Disposal Container Safety Analysis Report for' Packaging, WAPD-PE0(C)-122, dated June 1980, as revised (Revision 2, dated May 5, 1986).
Safety Analysis Peport for Packaging an SIC Core Basket-Thermal Shield Assembly in the S3G Core Basket Disposal Container, SIC CB-TS, dated August 1983.
S7G Core Basket in the S3G Core Basket Disposal Container Safety Analysis Peport for Packaging dated May 1987.
DOE memorandums G#7627 dated November 16, 1983; G#C86-3736 dated May 24, 1986, and l
G#C86-37SO dated July 15, 1986; and G#87-5663 dated July 7, 1987.
E FOR THE U.S. NUCLEAR REGULATORY COMfilSSION g
ear Charles E. Mac'ona d, Ctief Transportation Certification Branch Division of Fuel Cycle and Material Safety, NMSS f
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Date:
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UNITED STATES
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NUCLE AR REGULATORY COMMISSION WASHINGTON, D. C. 20555 p
Transportation Branch Approval Record Model No. S3G Core Basket Disposal Container Assembly l
Docket No. 71-9786 Revision 1 By application dated July 7,1987, the Department of Energy, Division of Naval Reactors, requested that Certificate of Compliance No. 9786 be amended to authorize shipment of the S7G Core Basket (S7G CB) in the S3G Core Basket Disposal Container (53G CBDC).
Revision 0 of the certificate authorized the shipment of both S3G.and SIC core baskets in the S3G CBDC.
Like the SIC and S3G core baskets, the S7G core basket would also be placed into an S5W Core Basket Removal Container (CBRC) prior to being loaded into the l
53G CBDC. The only modification required for the S7G/S3G CBDC package is that l
the CBRC will have an auxilfary steel shield near the bottom of its outer shell. With the addition of the auxiliary shield, the S7G/S3G CBDC package would weight approximately 172,239 lbs.
This is slichtly higher than the weight of 172,000 lbs. currently authorized for packages in the certificate.
However, the weight discrepancy is so slight that none of the original structural analyses were affected, i
The shielding analysis was performed using the SPAN-5 computer program and a source of 140,000 curies resulting from activation products.
The gamma dose rate at 1 meter from the package surface was. calculated to be 955 mrem /hr for hypothetical accident conditions.
The maximum dose rate at 2 meters from the container surface was estimated to be 10 mrem /hr under normal transport conditions. Thus, the radiation levels outside the package are within the criteria specified in 10 CFR 71.
The primary containment boundary for the shipment of the S7G core basket, the S3G CBDC consists of a 4.0-inch thick high strength steel cylinder, a 5.0-inch thick bottom plate, and a 4.0-8.0 inch thick top plate.
Since the S3G CBDC was shown not to rupture or puncture during hypothetical accident conditions, no radioactive material would escape since the S3G CBDC is completely welded shut and contains no outside penetrations, seals, or gaskets.
The hypothetical 1475*F fire conditions did not cause significant damage to any of the package's components.
No lead melting within the modified S5W CBDC has been predictad.
The staff agrees with the applicant's conclusion that stresses induced by temperature and pressure do not compromise package safety.
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l The following ' condition has been.added to Lthe certificate (Condition 8):
'" Shipment of the S7G core basket must be made no earlier than 180 days af ter. reactor' shutdown."'
Based on our review,.the statements and representations contained in the application and:the condition listed above, we find that. the Model No. S3G
. Core Basket Disposal Assembly meets the requirements of 10 CFR Part 71.
Charles E. MacDonaTd, Chief 1
Transportation Branch Division.of Safeguards.and Transportation, NMSS
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OCT 3 015d/
Date:
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