ML20054H268

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Discusses Current Shipping Packages Including Use of Drum Overpack & Shipping Two Sources within Source Changer
ML20054H268
Person / Time
Site: 07109006
Issue date: 05/27/1982
From: Santoro M
AUTOMATION INDUSTRIES, INC.
To: Rawl R
TRANSPORTATION, DEPT. OF
References
20779, NUDOCS 8206230175
Download: ML20054H268 (6)
v • d • e


Text

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AUTOMATION ~lNDUSTRIES, I C<xfiTe W L

'7/- 9006 n

SPERRY PRODUCTS DIVISI' 7 pp

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A P O Bon 245 C '.

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PHOENIXVILLE, PA 19460 J@l '/

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,a 7 3%Ibb Additional Drum Type Overpack for @32dourc Re:

our existing Model 500-SU, Iridium-1 g,o si c Changer (Ident. No. USA /9006/B(U)T) k gw%&s&J J

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Dear Mr. Rawl:

Our Model 500-SU, Iridium-192 Source Changer was originally certified as a Type "B" Package by your office in 1973. Subsequently, this package was subjected to the additional required tests for "B(U)" Certification during September of 1981, and the Certificate of Competent: Authority for "B(U)" shipments was issued on February 12, 1982.

Since the majority of our Model 500-SU Source Changers were fabricated during the period 1973 to 1976 when " surface radiation" was just t ha t--l e s s any correction.for chamber size or small package geometry---we find that with the increased emphasis directed towards more precise determinations of surface radiation levels, our existing package cannot be used for shipping larger sources or dual sources of Iridium-192. These limitations have sur-faced during the past eighteen (18) months when our company adopted and is now guided by the NRC's Draft Regulatory Guide, TASK TP914-4, dated December, 1979-- " Measurement of Radiation Levels on Surfaces of Packages of Radioactive Materials".

Many of our larger customers are now ordering Iridium-192 sources in multiple quantities.

In order to service these particular customers, we have advised them of the advantages of shipping two (2) sources within our Source Changer. We have also advised these customers that we would loan or consign to them an " empty" Source Changer which they would retain at their facility or job site to permit proper interchange of sources.

Both customer and Auto-mation Industries are very desirous of this arrangement and would benefit s.4

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mutually as follows:---

0 Y %.,k' "hy'i; ' e70719 8206230175 820527 PDR ADOCK 07109006

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U.S. Dept. of Transportation May 27, 1982 Cbn' t... Page 2.

(a) Reducing cost of transportation.

(b) Reducing total number of shipments of hazardous materials, and associated documentation.

(c) More efficient utilization of shipping containers.

To implement this program we have designed and constructed a drum type container for overpacking the Model 500-SU Source Changer. The drum over-pack will be constructed of #18 gage steel, having an outside diameter of approximately 15-1/2" X 13" height. The drum will be fitted with molded hair inserts to accept and properly position the contained Model 500-SU.

The drum is also fitted with two (2) side handles, gasketed lid, clamp ring, seal bolt and nut, and seal wire.

Each drum will also bear an ex-ternal stainless steel nameplate denoting that it is the property of Auto-mation Industries, Inc., including our Phoenixville, PA address, and ap-propriate serial number which will be assigned to each drum. When being prepared for shipment, the drum will also be marked and labeled to meet all prescribed requirements of U.S. NRC and U.S. DOT for shipments of radioactive materials.

The enclosed six (6) photographs illustrate the configuration of drum, molded inserts, lid, closure, and positioning of the Model 500-SU Source Changer.

The total shipping weight of the complete package will be 8Qt one pound.

Please note that the drum overpack is used only to increase the dis-tance to the external surface to assure that surface radiation levels are maintained well below the 200 millirems per hour limit. The drum is not intended to contribute additional protection against mechanical damage or fire exposure since the inner package, the Model 500-SU Source Changer, had previously demonstrated compliance with the requirements of Type "B" and Type "B(U)" packaging.

U.S. Dept. of Transportation May 27, 1982 Con't...Page 3.

This letter is to keep you current on our present shipping practice.

If results of surface radiation monitoring (corrected for package / detector geometry) exceed the 200 millirems per hour limit, the Model 500-SU will be packaged within the overpack drum.

If results of monitoring are with-in permissible levels, the overpack will not be used.

We are uncertain as to whether this practice of using the overpack on certain shipments only should be incorporated into the Certificate of Competent Authority and Certificate of Compliance assigned to the USA /

9006/B(U)T package.

Please let us have your comments.

Should you require additional information on the above, please contact me at our Phoenixvilla office. (215) 933-8961.

Sincerely,

/f l b t

Michael P. Santoro, Engr. Mgr.,

Nuclear Products.

MPS: deb cc: U.S. Nuclear Regulatory Commission Attn: Mr. Charles E. MacDonald, Chief Transportation Certification Branch Washington, DC 20555 Enc: (6) Photographs

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