Assembly: A group of elements or subassemblies combined in a structural unit. The assembly is usually that fuel structure which is removed from the nuclear reactor as an individual unit.

A separate description form is required for each element, subassembly or assembly which is different in description.

All dimensions are given in feet and inches and all weights in grams or kilograms.

1. Drawings. Drawing (s) no.(s), three copies of which have been furnished the Contractor and which are incorporated herein by reference thereto, constitute (s) a comprehensive illustration of the fuel elements, subassemblies, and assemblies described herein as charged to the nuclear reactor in sufficient detail and accuracy to permit chemical processing under this contract.

2. Material Description. The following summarizes the description of fuel elements, subassemblies, assemblies as charged to the nuclear reactor. Where dimensions are required, the nominal dimensions, as charged to the nuclear reactor, must be used. Weight must be dry, unirradiated weights with the expected range of weights also to be indicated.

a. Element Description

(1) Type (plate, disc, rod, tube, etc.).

(2) Nominal dimensions (including clad and bond).

(3) Nominal gross weight__.

(4) Weight of SSNM before irradiation

Total U

U-233.

U-235.

U-235 enrichment.

Total Pu--

Total Th___.

(5) Chemical form of SSNM (UO2, UC, etc.).

(6) Fabricated form of SSNM (Pellets, slugs, ribbons) and pattern in element----.

(7) Alloy or dispersing material (Zr, SS, etc.).

Weight

(8) Cladding material (Zr, SS, etc.) (if appropriate in ASTM designations)_

(10) Spacers, inactive end material (MgO; SS, etc.)

Dimensions_.

Weight_

(11) Other Material contained in fuel element

Any material not covered by the above shall be added to provide additional description of fuel. All impurities in excess of 100 ppm or uranium prior to irradiation shall be identified.

(4) Construction material in addition to that under A, 2, a.

Casing material.

Dimensions__

Weight..

(5) Weight of SSNM per assembly before irriadiation :

Any changes or modifications to the assembly or unit to be shipped must be listed in detail giving weight, compositional and dimensional data. In addition, the drawings or illustrations provided per Section 1 above should indicate these changes or modifications.

3. Identification. Each separately removable unit in the shipping cask must be identified by a durable metal tag or label, or by embossing. The unit (i.e., assembly, loose rods, fuel tube, etc.) must be identified in the shipping invoice giving the type of fuel as described in this Appendix. Units to be identified are: (element, subassembly, assembly, etc.)

4. Post-Irradiation Data.-SSNM Content After Irradiation. The average and maximum SSNM content is to be specified in grams per assembly. The best available value should be given and the probable uncertainty stated.

Probable Uncertainty

Total U

Total Pu

Total Th

U-235

U-233

Pu-239

Burn up

Specific power

1. Except as otherwise agreed, shipping containers to be used by the Commission shall be: (a) SCRUP container (Bureau of Explosives No. 622); (b) Westinghouse container (Bureau of Explosives No. 1475); (c) GE spent fuel shipping containers (Bureau of Explosives No. 1472); (d) Stanray S-1 container (Bureau of Explosives No. 1400).

2. Three complete sets of design or "as built" drawings for each container to be used shall be submitted to the Contractor for approval with the following information:

a. Details on fuel loading arrangement in container.

b. Special tools or equipment required to unload fuel from container and open containers.

c. Method of attachment of container to the shipping vehicle proposed for use in shipment.

3. The contractor shall accommodate only the type of containers specified in Section 1 of this Appendix B. If an alternate container design is required by the Commission at a later date, it shall be the responsibility of the Commission to design such container so that it can be handled by the Contractor or to reimburse the Contractor for changes to the fuel receiving station to accommodate the alternate container design.

4. Shipment will be accepted from rail or motor carriers.

5. All containers must be approved by the Bureau of Explosives for shipment of specific materials involved.

6. All containers must meet the Interstate Commerce Commission's allowable radiation requirements.

7. The maximum radiation limits shall be not more than 200 mr/hr at the surface of the container.

8. Containers must be readily removable from the shipping vehicle. Maximum weight of a loaded container to be lifted from the vehicle is 100 tons. The Commission shall provide a set of container unloading instructions for each container which give reasonable assurance that under normal circumstances the container can be unloaded with a total exposure to personnel of 25 man-mrem. 9. Containers must have provision for free drainage of water from all external surfaces and attachments.

10. The use of cooling media other than water is not acceptable when such media can contaminate the storage water or fuel elements or cause other problems. Substitution of other cooling media for water or the use of additives such as antifreeze will be considered on an individual case basis.

11. The container must have a readily operable drain and all internal surfaces should drain freely to it. A siphon drain is preferred since a bottom drain is more susceptible to damage and can result in the loss of the cooling water. A siphon drain must be in the body of the container and not part of the cover.

12. Container design should recognize the possible use of impact wrenches in the removal of nuts and bolts. Proper consideration should, therefore, be given to the clearances necessary.

13. Containers must be top opening.

14. All inner container surfaces which are likely to be contacted by the coolant must be of stainless steel. All external surfaces must be accessible for decontamination. These external surfaces, including weldments, must be smooth, free of weld spatter, and free of nondraining crevices or pockets.

15. Units with exposed uranium or plutonium shall be carried by the Commission in container whose material and design shall have been approved by the Contractor, unless the Contractor determines such carrier is unnecessary.

16. Container design should permit withdrawal of a representative sample of the container coolant while the container is on the transport vehicle.

17. The activity limit for container cooling water is 10 beta-gamma curie/cc or 10-alpha curie/cc.

18. The internal pressure of the primary coolant system of a container shall not exceed 50 pounds per square inch guage or 50% of the design pressure, whichever is less, under normal conditions of transport. In containers designed to operate at a pressure no greater than atmospheric, an automatic pressure release system must be incorporated. Methods of control or containment of the released fluid must be provided.

19. Surface contamination shall not exceed 4000 beta-gamma disintegration per minute per 100 square centimeters nor 500 alpha disintegrations per minute per 100 square centimeters. Containers contaminated to no more than five times these levels will be decontaminated without charge as part of the chemical processing service provided by the Contractor under Article II of this contract. 20. Containers must not leak grossly.

APPENDIX C

SPECIFICATIONS FOR RECOVERED PRODUCT

A. PLUTONIUM

These product specifications apply to each product accountability tankful of product as measured in the plutonium product accountability tank.

The product shall be in the form of plutonium nitrate solution containing a minimum of 50 grams of plutonium per liter and a maximum of 250 grams of plutonium per liter. The free nitric acid molarity shall be between 2 and 10 molar.

The maximum permissible total uranium and other metal impurities shall be 5000 parts per million parts of plutonium.

The maximum permissible amount of residue insoluble in 50% nitric acid is 5000 parts per million parts of plutonium.

The maximium permissible amount of entrained organic material is 0.5% by volume of the aqueous volume in the product solution.

The maximum permissible fission product gamma plus beta activity is 50 microcuries per gram of plutonium.

Chloride and sulfate content must be low, consistent with control of corrosion and the use of technical grade chemicals.

B. URANIUM

These specifications apply to the weighted average of the contents of all containers delivered at one time.

The product shall be in the form of uranium nitrate solution. The concentration of the product solution shall be as reasonably designated by the Contracting Officer in conformance with applicable Federal and State laws and regulations, including the regulations of the Commission, pertaining to shipments of radioactive materials.