ML20248B586
| ML20248B586 | |
| Person / Time | |
|---|---|
| Issue date: | 10/26/1979 |
| From: | Jonathan Brown NRC |
| To: | |
| Shared Package | |
| ML20248B527 | List: |
| References | |
| SSD, NUDOCS 9806010341 | |
| Download: ML20248B586 (4) | |
Text
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REGISTRY OF AA010ACT!VE SEALED SOURCES AND DEVICES .
I SAFETY EVALUAT10N OF SEALE0 SOURCE (Corrected copy) i 102 ,: NR1365174U g: October 26, 1979 PAGE 1 0F A l SEALED SOURCE TYPE: Foil Source MODEL: AMM1001. AMM1001H MANUFACTURER /015TRIBUTOR: Amersham Corporation I 2636 5. Clearbrook Drive Arlington Heighti, IL 60005 ;
MANUFACTURER / DISTR _IBUTOR:
!$070PE: Americium-241 MAXIMUM ACTIVITY: $0 eierocuries per square cm of foil .
LEAK TEST FREQU(HCY:
PRINCIPAL USE: Ion Generators, Smoka Detectors i
l CU$f0M SOURCE: YES 1 NO '
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9806010341 980521 PDR RC
- SSD PDR
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REGISTRY OF RADICACTP/E SEAlf 0 SOURCES 40 DE'/!CES SAFETY E'IAltATICri 0F SEAT !O SCCP.CE t
'&: NR1365174U OATE: October 26, 1979 pAGE 2.0F 4 SEALE0 $00RCE TYPE: Foil Source DESCR!PTION:
The Model ANM 1001 sealed source consists of americ'ium oxide uniformly distributed and sintered in a pure gold matrix which is further contained between a backing of gold coated pure silver and a front covering of either gold or gold-palladium alley and f abricated by hot forging methods. The continuously rolleo so that the minimum thickness of the layers are:y welded metal layers are gold palladium alloy 0.0015 mm americium oxide plus gold 0.0001 nm gold 0.0001 m substrate 0.20 m Sub-divisicn of the rolled foil is accomplished by cutting or punching into discs of 5 m diameter or strips of say 2 m x 10 m diameter. At the activity loading specified above there' is no loose or wipable contamination above the wipe test limit of 0.00$ microcuries. l l
The Medal AMH 1001H mounted sealed source consists of a sized foil mounted in"T" a shaceo standard holder constructed of tin plated brass. Lips of the source holder are rollac over the edge of the foil so the cut edges of the fait are not exocsed.
The larger diameter of the holder is approximately 5 m and the length is approximately 6 m . The useful life is 20 years.
LABEL!pG:
Heither the foOs nor mounts .re labeled. This evaluation does not describe possible A/S foil sources distributed under other model designations nor scurces ,
previously distributed under "AMM"' designation.
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REGISTRY OF RAD 10ACT!VE SEALED SOURCES AND DEVICES SAFETY EVALUAT!ON OF SEALED SOURCE NO.: NR136$174U 0 ATE: October 26, 1973 PAGE 3 0F 4 SEALED SOURCE TYPE: Foil Source DIAGRAM:
- A. Covew La.ye, s - -
L-%gn)
B-AcGe C- S a.c.km, L.a.yso- 3 -- //=
O - S d s t.gm&c. Laysn O / 'A -
G.- Ba.ek Cov41.ag
.Sectim of act,iu< w
.' . ; A - gi) Sm= IL= bb,m v 0,002 m m *
.. Qi; CoMy s ea>o t oed j
, ' . ' : , .. S: Arnantnwr Q<id,g plus God < 0ocatmrw s '
c.- caw < 0,oor m m '
D . 4 2 0 - 0,25 m m G - CoM - < 4 0*! m m PROTOTYPE ttSTING:
prototype Model ANN 1001 blanked scaled sour.cas and Model AMM 1001H mounted sources havt been tested to cond.itions described by USASI standard N5.10-1968 and respective classifications of C54545 and C44444 have been demonstrated. Results of wipe tests of the tested foils were acceptable to less than 0.00$ microcuries.
In addition AMM 1001 samples have successfully passed "special form" testing conditions.
Model AMM 1001 foils have experienced the following additional tests:
- 1. levnersion in water of prototype foils for 3 weeks at room temperature:' less than 0.001 microcurie per foil loaded at maximum activity was found in the water.
l 2. Immersion in 0.1 N hydrochloric acid for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at room temocrature: less than 0.004 microcu,rie activity was leached out.
- 3. Fotis were subjected to tests in moist air, dry air, sulfur dioxide fumes, hydrochloric acid fumes, amonia vapor to repetitive wipe tests ($000X) and welding tests: less than 0.005 microcurie wipable contamination was found.
Shelf-life tests of foils with 50 microcuries/cma loading show no deleterious aging effects after 6 years.
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RIG lST :F UC:0ACT'.'lE SEALE: SCORCES AhD DEVICIS iAFETY EVALUATION OF SEALED SOURCE
':0. : NR1361174U OATE: Oct:eer 26, 1979 PAGE 4 0F 4 _
SEA 1,ED SOURCE TYPE: Foil Source i
DROTOTYPE TESTING (CONT'3h -
Fuils and cunted foils have been subjected to ozone at 0.75 ppm for a ceriod of 60 days and salt spray for 16 days without deleterious results. .
CUALITY AS;~ 'ANCE AND CONTROL: l Not less enah 10 percent of the Model W 1001H sources are enecked by camma counting to ensure that the activity in each foil is within specified limits. Each and thatisthe product visually alpha inspected to check 6mitting r.rface it that the rolled over acge is satisfactory wipe tested to an acceptance limit of 0.005 free microcuries.
from surface defects. Each source is In addition to the above, each Model AMM 1001 feil is checked by alpha s'pactrometry te determinr. the aceouacy of the gold cover.
REFERENCES:
Date October 26. 1979 Reviewed By /s/
Joseon M. 5rown, J.
Date Octeter 25, 1979 Concurrence /s/
Earl G. Wrignt
!$50tHG AGENCY:
U.S. Nuclear Regulatory Comissien s
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