ML20134P765

Provides Details of Telcon W/J Menefee of Harshaw Chemical Co Re Harshaw Reply to Discussing Alternative Prototype Tests for Crystals Containing Am 241 or Pu

ML20134P765
Person / Time
Site:	07000472
Issue date:	10/05/1965
From:	Churchill B US ATOMIC ENERGY COMMISSION (AEC)
To:	US ATOMIC ENERGY COMMISSION (AEC)
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References
FOIA-96-529 NUDOCS 9702260111
Download: ML20134P765 (1)

Text

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UNITED STATES GOVERNMENT i

Memorandum 001 6 i

DATE:

To

Files a

Bruce W. Churchill, Isotopes Br c

FROM

Division of Materials Licensing l

TELEPHONE CALL TO MR. J. stENEFEE', THE HARSHAW CHEMICAL C(BIPAN l

SUBJECT:

ORIO, OCTOBER 4, 1965 to our letter of June 28 included some a

Harshaw's reply of September 23, 1965, alternative prototyr,e tests for the crystals containing Americium 241 or l

Mr. Menefee The te9ts included soaking the sealed crystal in oil.

said that the oil soak test was an attempt to simulate the Section 32.102, plutonium.

10 CFR 32, requirements for a water soak test and Harshaw was not particular l

Mr. Menefee explained that the normal anxious to soak the crystals in oil.

procedure was to conduct performance tests and tha Two or three days normally elapse between tion of the hygroscopic crystal, In the time the can is sealed and the final performance check is performed.

view of the nature of the crystal assembly and the effectiveness of the per-formance tests, I told Mr. Menefee that it would not be necessary for'him to conduct the oil soak tests.

The can is normally aluminum, sometimes stainless steel or copper, and the seal is epoxy or, if rugged use or extreme temperatures are anticipated, the The epoxy is good for a temperature range of from An extremely thin epoxy layer is spread between the crystal and can may be tin soldered.

If the temperature range is 0 to 1000C.

the window to provide an optical coupling.this optical coupling would bre

exceeded, from performance before the seal would fail.

~

Mr. Menefee said that nearly all crystals would conta almost 1 microcurie.

About 95% of the units will Labeling will depend on the sine of the unit.

and the amount; contain the caution symbol, the isotope, date of measurement, 32.58, 10 CFR and about 90% will have room for the label required in Section If there is no room on the unit for these labels, they will be 32.

to the storage container.

devices be kept in the storage container when not in use; the containers have been specially constructed to guard against both thermal and mechanica The model number, which includes the letters AM or PU, is permanently en This is primsrily for Harshaw's own benefit to assure that radioactive crystals returned to the factory are properly identified.

on each unit.

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