ML20039H067
| ML20039H067 | |
| Person / Time | |
|---|---|
| Site: | 07002302 |
| Issue date: | 12/14/1981 |
| From: | Taras D ARMY, DEPT. OF, HEADQUARTERS MATERIEL DEVELOPMENT |
| To: | Davis F NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20039H068 | List: |
| References | |
| 20053, NUDOCS 8201190495 | |
| Download: ML20039H067 (11) | |
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,73a2 pg DEPARTMENT OF THE ARMY T. Grucci/seb/274-9340 HEADQUARTERS US ARMY CA ATERIEL DEVELOPMENT AND READINESS-.COM M AND 5001 EISENHOWER AVENUE, ALEXANDRIA. VA. 22333 REti!VED DRCSF-P
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Director fluclear fiaterial Safety and Safeguards g
ATTil: Radioisotope Licensing Branch 1.9 (fir. F. Davis) p, US fluclear Regulatory Commission W,
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Ref:
Mail Control No. 19365 ip,
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Dear Mr. Davis:
Forwarded is US Army Aberdeen Proving Ground reply to your request dated 19 Oct 81 for additional information in support of renewal of Special Nuclear Materiel License Number SilM-1649. Please acknowledge receipt of correspondence on inclosed DA Forn 209 (Mail Reply Card).
Sinc ely,
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as stated Chief, Health Physics Safety Office Copies Furnished:
HQDA (DASG-PSP-E) WASH DC 20310 Dir, DARC0f1 FSA, Charlestown, IN 47111 i
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SUBJECT:
NRC Request for Additional Information in Support of Renewal Application for License SNM-1649 Commander US Army Test & Evaluation Command ATTN:
DRSTE-ST (Ms. Palmateer)
Aberdeen Proving Ground, MD 21005 1.
The following information on instrument calibration is submitted as requested.
For each of three calibration sources the following information is given: manufacturer, model number, nuclide, quantity of radioactive material, accuracy and traceability to a primary standard.
a.
Oak Ridge National Laboratories, Model 120C-1, Cs-137, 80 curies, accurate to f,10 percent, traceable to National Bureau of Standards, b.
Eberline, Model S94-2, PU-239,5six sources:
8.408x102 CPM, 3 CPM, 8.793x104 CPM, 3.463x10 CPM, 2.446x106 CPM, 5.046x106 CPM, 7.533x10 all accurate to f.10 percent, traceable to National Bureau of Standards.
c.
J.L. Shepherd and Associates, Mcdel E8-5, Cs-137, 100 millicuries, accurate to 1 la percent, traceable to National Bureau of Standards.
2.
The pertinent experience of the person who performs the calibration is attached as Inclosure 1.
FOR THE COMMANDER:
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)A'L M. NETT as Safety Director 4
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DENVER C. MISER s
EDUCATION Physical Science Major, 2 years (1959-1961) wes t Virginia Universi ty.
i Math and Physics, 35 semester hours credit. Johns Hopkins University (night school) 1964-1966.
i 9asic Radiological Health and Occupational Radiological Hea.lth, Public Health Service School, Rockville, Maryland.
Nuclear Emergency Team Operations, US Army School, Sandia Base.
New Mexico (included session on alpha calibration techniques).
Air Cleaning an'd Filtration, Harvard School of Public Health', Boston, Massachusetts.
Training Course in Radiation Instrument Calibra tion, Lexington blue j
Grass Army Depot.
EXPERIENCE Health Physics Technician, USA Nuclear Defense Laboratory (NDL), Edgewood Arsenal, Maryland, 1962-1972.
Calibration Technician, NOL, Ballistic Research Laboratory, and Aberdeen Proving Ground, 1963 present.
U.S. Army RADCON Team Member, 1963-1976.
Health Physics Operator, Army Pulse Radiation Facility, Aberdeen Proving Ground, Maryland, 1972 present.
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DEPARTMENT OF THE ARMY
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SUBJECT:
Nuclear Regulatory Ccmission Request for Additional Information in i
Support of Renewal Application of Special Nuclear Material License Number SNM-1649 - Aberdeen Proving Ground THRU:
Comander US Army Test & Evaluation Command ATTN:
DRSTE-ST Aberdeen Proving Ground, MD 21005 Commander US Army Materiel Development & Readiness Command ATTN:
DRCSF-P 5001 Eisenhower Avenue i
Alexandria, VA 22333 T0:
Director of Nuclear Material Safety & Safeguards Materials Licensing Branch, F. Davis US Nuclear Regulatory'Ccmmission Washington, DC 20555 1.
Reference Mail Control Number 19365.
2.
The following information is submitted in reply to your request dated 19 Oct 81, concerning our application dated 25 Mar 81, for renewal of License Number SNM-1649.
3.
Instrument calibration.
Alpha and gamma detection equipment is used to monitor special nuclear material.
Step-by-step procedures for calibration of this equipment are given in Inclosure 1.
Also, we comply with DARCCM Regula-tion 385-25.
Paragraph 29 of this regulation, which deals with instrument calibration, is given in Inclosure 2.
4.
Film badges.
The frequency for changing film badges is monthly.
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STEAP-SA
SUBJECT:
Nuclear Regulatory Commission Request for Additional Infonnation in Support of Renewal Application of Special Nuclear Material License Number SNM-1649 - Aberdeen Proving Ground 5.
Radiation survey program. We comply with DARCOM Regulation 385-25.
Paragraph 17 of this regulation, which gives the type and frequency of radia-tion surveys, is given in Inclosure 3.
FOR THE COMMANDER:
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CALIBRATION PROCEDURE - ALPHA INSTRUMENTS 1.
Refer to manufacturer's technical manual for instrument operation procedures.
2.
Use Eberline plutonium alpha calibration standards, set of 4.
3.
Turn instritment "0N."
4.
Set selector switch in alpha counting position if applicable.
5.
Set scale switch to the X1.0 position.
6.
Check battery condition.
7.
Check background CPM.
8.
Set discriminator adjustment using procedure in manufacturer's technical manual.
9.
Remove protective cover from detector and place detector on the applicable standard source.
- 10. Adjust the X1.0 calibration potentiometer until the average meter reading matches the CPM of the standard source.
11.
Rotate the detector on the source 180 degrees and observe the average meter reading.
If this reading differs from the source CPM, adjust the calibration potenticmeter until the average of the two readings equals the standard source CPM.
Lock the calibration control.
The two' readings above should not deviate from the standard source CPM by more than 10 percent.
12.
Calibrate at two points on each scale, with the two points separated by at least 50 percent of the scale.
13.
Repeat steps 9 through 12 for the other scales, changing scale switch and standard source as required.
14.
Recheck the discriminator adjustment and reset if necessary.
15.
If the discriminator is readjusted, the entire calibraticn must be rechecked.
- 16. Turn the instrument "0FF "
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CALIBRATION PROCEDURE - GAMMA INSTRUMENTS j
1.
Refer to manufacturer's technical manual for instrument operation procedures.
2.
Use calibrated gamma source range.
CAUTION:
The gamma field can be injurious to personnel.
Apply normal gamma range precautions.
3.
Turn instrument "0N."
4.
Set scale switch to most sensitive position (X.01 on Eberline E500-B, for example) and check battery condition.
5.
Place the instrument on the gamma range at a position that will yield approximately 3/4 scale reading.
6.
Allow sufficient time for the instrument to stabilize, then id3ust the appropriate calibration potentiometer so the meter indicates the correct value for that position.
The reading should not deviate from the standard source reading by more than 10 percent.
7.
Calibrate at two points on each scale, with the two points separated by at at least 50 percent of the scale.
8.
Repeat steps 5 through 7 for each of the other scales.
9.
Turn the instrument "0FF."
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- 29. Rndiac inst rumentatten.
a.
Sufficient rcdiac instruments will be available to properly support the use of radiation source's. The
- 3 instruments will be capable of detecting the types and levels of radiation a
involved and any possible resulting contamination.
a b.
Personnel monitoring devices will be immediately available in areas in which radioactive =aterials are handled.
All instruments used for radiation protection will be cati-c.
beated at least every 3 months, and af ter each maintenance or battery change. Fbre frequent es11bration will be necessary for instruments which receive heavy use.
Dosimeters need to be calibrated only at 6-month intervals.
Dose rate instruments used to determine time of stay and expo-
. 't' sure estimates should be calibrated at a minimum of two points on each instrument scale.
The instruments will be labeled with DA Labe'l 80 (U.S.
Army Calibration System) to show the date of the last calibration, source or method used for calibration, and the initials of the calibrator.
d.
Faulty instru=ents will be tagged with DA Form 2417.junservice-able Test Instrument or Standard) to prevent their being used before having been repaired.
Each instrument used for radiation protection should be pro-e.
vided with a check source or test sample.
t f.
Pocket dosimeters should be calibrated every 6 month.s.' At the time of calibration, the uorrection factor for the dosimeter should be determined.
Dosimeters which leak more than 5 percent of full scale af ter 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in a radiation free area or which have an error of more than 10 percent should be repaired.
Dosimeters should be calibrated by exposing them to known sources of an energy level comparable to that which the dosimeter will be exposed during use.
Each dosimeter vi,11 bear a label showing the correction factor and the date of calibration.
The co r-rection factor is determined by dividing the actual level of radiation by the indicated level.
g.
Dosi=eters are used to give the wearer an estimate of his exposure while receiving the dose, in order that he may limit himself to permissibic levels.
Disagreement between dosimeter and film badge measure-ments is to be expected.
The film badge reading will be used as the of fi-cial dose for record purposes unless the badge is proven to have recorded an incorrect exposure, h.
Instrucentation must be selected based on the type and level of radioactive material and/or radiation to be encountered.
In high radia-tion areas, it is desirable to have a high-range survey meter in addition l
to a low-range meter, in order to cover the range of dose rates likely to be encountered.
1.
If funds pe rmit, duplicate radiation protection instruments should be available.
The duplicate instruments will avoid the necessity of shutting down a radiological cperation until an inst rueent : In be re -
p Tired or replaced.
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Radiation survevs.
Surveys should be made under representative conditions.
The following describes certain types of radiation surveys.
a.
Initial surveys.
An initial survey will be made by the radiological protection officer of sites and areas where sources'of radia-tion will be used and/or stored before an operation involving radiation is initiated or operational changes are approved, or upon installation of a device which produces ionizing radiation.
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b.
Routine surveys.
(1) Surveys of each area in which sources of radiation are used and/or stored shall be performed by or under the direction of the radiological protection officer at least once each month. The radiation hazards incident to the production, use, release, disposal, or presence of radioactive materials or other sources of radiation will be evaluated.
Such an evaluation includes a physical survey of the location of r..aterials and equipment, measurements of levels of radiation and/or concentrations of radioactive material in and around the site.
Conditions of stable storage may be exempted from monthly surveys at the discretich"'o'f the local radiation control committee.
However, the intervals of surveys of storage areas will not exceed 3 months.
(2) The area survey will be performed using suitable in-struments, and, when appropriate, smear and air sampling techniques. Work habits of personnel should be observed to obtain data regarding additional sites to be monitored or areas of improvement for the operational procc-dures.
Locations of the monitoring points with the results, statement of the hazard, and any recommendations as to decontamination, shielding, procedural changes, etc., will be recorded and filed.
In addition to the surveys in a and b above, 'special surveys c.
are required in the event of the following occurrences:
(1)
Shipment or receipt of radioactive materials. Packages and the unicaded vehicles cust be surveyed.
(2) Termination of s nroject involving radioactive materials.
A survey is required to determine that no contamination exists and that sources of radiation are pry erly stored or have been disposed of properly.
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(3) Unplanned cvents. Loss of control, spill, overexposure, or any unplanned event which could adversely or did adversely affect the safety of the operation must be monitored.
Control must be re-established i
i to prevent the hazard from increasing.
(4) Hazardous operations. Particularly hazardous operations, such as decontamination, encapsulation, or smelt.ing of radioactive saaterials, as authorized by AEC license or DA authorization, must be continually ironitored.
f d.
All places, equipment, persons, and animals sur 3cted or kncwn to have Ncn in contact with radioactive e.iterict will be a. i tcTe'd f o r contamination. Personnel must be monitored before eating, smoking, chew-
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ing, drinking, or 1eaving the area in which radioactive materials are
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HEADQUARTERS US AROY rATERIEL DEVELOPZENT AND REActNEs3 cCM!AN3 5001 DSENHZER AVENUE'. ALEXANDRIA. VA. 22333
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DRCSF-P/81-005.0 22 October 1981 SUBJ2CT: Nuclear Regulatory CcI:::sission Request for Additional Infer =ation in Support of Renewal Application of Special Nuclear Material License Nu=ber SHM-1649 - Aberdeen Provin6 Ground
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t Coz::ruander US Army Test and Evaluation Cnem,d ATTN: DRS*2-ST Aberdeen Proving Ground, MD 21005
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1.
Forwarded is Nuclear Regulatorf Co-4ssien request for additional infor=ation in support of Aber%n Proving Ground renewal application for Special Nuclear Material License SUM-16h9 In'or=atien requested is in area of instr.:=ent cali-bration procedures 3. exchange of fils badges, and radiation survey progrs=s. URC Regulatory Guide 10.7 - Guide for the Preparation of Applicaticas for Licenses for Laboratorf Use of Full Quantities of 3yproduct Material is inclosed for assis-tance in preparing your reply.
2.
Plesse sub=it your reply in sextuplicate by 13 November 1981 for our review and processing to Juelear Regulatory Coz:::ission.
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as Chief, Health Physics Safety Office l
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