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AMSTA-AC-SF
DIPARTWNT OF THI ARMY UINlftD ITATD MllY TAM • AUJOllOTM MD A1U1A1m111'1 ~
...-wwr Alm~ ~mall -- LomTICI ACllWITY ROCK.......,, 11.LW n.-,_
February 12, 1996
U.S. Nuclear Regulatory Commission Sealed Source Safety Section, AlTN: Mr. Douglas Broaddus Source Containment and Devices Branch Division of Industrial and Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards Washington, D.C. 20555-0001
Dear Sir:
References:
a. NRC letter, January 23, 1996 with attached Registration NR-0155-D-121-S.
b. ARDEC letter, February 12, 1996, subject: M67 NRC Registration.
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Appropriate Army offices have reviewed the registrBtion provided in reference a. This registration provides limits, -30 degrees C to +65 degrees C, to use of the M67 sight unit which are more narrow than situations which may occur while the soldier is using or storing the M67.
We understand 'Use' is defined by the NRC as all conditions under which the registered item may be found, i.e. use and storage. Therefore, we are providing further infonnation on testing sou to obtain a wider 'use' window, -46 degrees C to +71 degrees C, which will cover the Army use and storage conditions.
This action hu been coordinated with and approved by the Headquarters. Army Materiel Command Safety Office.
The point of contact for this action is Mrs. Betty Peterson, AMST A-AC-SF, 309. 782-2962.
Enclosure
9604020140 ?6021 2 PDR RC * PDR sr.m
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AMSTA-AR-QAS
DEPARTMENT OF THE ARMY UNITED STATES ARMY TANK· AUTOMOTIVE AND ARMAMENTS COMMAND
ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL, NEW JERSEY 07806-5000
February l 2. 1996
MEMORANDl fM FOR Commander, U.S. Anny Armament and Chemical Acquisition and Logistics Activity (ACALA). ATTN AMSTA-AC-SF, Rock Island, IL 61299-6000
SUBJECT M67 NRC Registration
I References·
1.1 NRC Letter dated 23 Jan 96 with attached NR-0155-D-121-S
I 2 FONCON, 07 Feb <Jo, betv..-·ecn Mr Lubinski, NRC, and Mr. Elliott, ARDF<..
2 The NRC Registration for the M67 Mortar Sight Unit was reviewed. The limitation on page 8 presents a problem to the use of the M67. On page 8 of the registration, the third bullet under the heading, "I .:mitations and/or Other Considerations", states "The device shall not lie subjected to conditions which would exceed an ANSI N540 classification ofT6GC with the exception of a maximum temperature of 65°C ( 149°F) under any conditir1n ., During Ref I 2 I O~CO!'\. \VC
requested darilication of this limitation We understand that it precludes use of the \167 at
temperatures outside of the limits of-Jot1C and +65°C Although we fully· unckrsta11d why these
limits have been imposed it was not our intent to limit use to these temperature~ limits
3. The US Army has the requirement to use the M67 at environmental conditions v.ihich we refer to as hot and basic This equates to a range of from -33°C to +71 11C Jlowcver, the user may, on ra1 ')Ccasions, use the t\167 at cold temperatures as low as -<~6°C We have data to validate thh. dSC between the limits of-46°C and +71°c will not adversely aflect the Tritium vials. We request that· 1 review this data and, if you agree with our conclusions. request the NRC to modit)1 t1 . ~egis 1 at ion to authorize use within the range of ~46°C and + 71°C
4. The data we wish you to review is that collected during First Article and acceptance testing of the sight unit. As was ci:_,cusscd under the Product Assurance section of the applil·ation l Encl 4 to End I of the " - \/c 1
• " AC ALA MEMO to the NRC), we conduct accl·ptance testing on J Mounts per ~O prod1, ,>r one months production iflcss than SOJ and 3 Tclc!:>copcs per I 00 produced (or one months production iflcss than 100) Production will ramp up from an initial IO units per month to 50 units per month. The acceptance testing includes a temperature extreme test. Encl I defines the test parameters for the Mount and the Telescope Gener ally spcaking,
AM STA-AR-OAS SUBJECT M67 NRC Registration
we are subjecting the Mount and the Telescope to cold and hot soak at -46°C and i 71 11(' and then
evaluating the Hem for tritium leakage Leakage evaluation on the Telescope is done thru swipe testing and a 24 hour ditli1sion test, the Mount is swipe tested but a diffusion test is not conducted because it would be a destructive test
S We believe that the temperature extreme test is sutficient to validate sate use ocrwcen the range of -4{>°C and., 71°C because of the fr>llowing aspects of the test
a The sight unit 1s tested bare rather than in its shipping container Any insulation value which the case may provide i·) not factored in and thus the sight unit v,1ill be exposed during this test to temperature levels that may in fact exceed real world situations
b. The sight unit is held at the temperature extremes H.1r fou1 or more hours This insures that the sight unit has stabilized at the extreme temperature and, in effect, provides for a hot soak/cold soak condition
c The sight unit is heated and cooled over a period of 4-5 hours This slow and steady temperature change better represents a storage scenario than the 45 minute period used in the ANSI-N540 temperature test.
d The test protocol includes handling and some operation at the extreme temperatures for the Mount
6. Encl 2 provides test data frn the J sight units tested during First Article Test and the .1 sight units tested during the Lot Acccptr.;-;.cc Test for Lot #I Lot #I consisted of IO scopes and 9 mounts. This test data confirms that exposure to temperature extremes of-461
\' and '71 (ic does not adversely ctffect the M67
., Request expeditious action to ohtain a modification of the NRC Registration as this action is required prior to Material Release If there arc any qucsti as concerning the attached test data please contact the undersigned at DSN 880-3C4 7
2 Encls as
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'h-H.-., {_ . . ~x~famcs E. Elliott, PE Chie( System Safety Oflkc
DETAii ED DESCRIPTION OJ'' TEMPERATURE TF.ST
MOttNT (First Article and Lot Arreptance Testing)
The mount shall be placed in the test chamber and the temperatur~ of the chamber reduced, over a period of 4 hours .·1 l S minutes, from room <1mbient temperature to -)O"F The mount shall be maintained at this temperature f(:)r a minimum of 4 hours Upon completion of the 4 hour exposure. anti while at -50" (-46"C), the mount shall he subjected to operability Upon com1;lction of the lov, temperature operability tests. the temperature of the chamber shall be rai~ed, over a period of 4 hours '· 15 minutes, w room ambient temperature and the mount allowed to stabilize at this temperature for 2 hours + 15 minutes, at which time the mount \viii be subjected to operability tests l ipon completion of the room ambient temperature test. the tcmperaturl' of the chamber shall be raised, over a period of 4 hours t IS minutes. to 1 l 60"F ( 17l°C) The mount shall be maintained at this temperature for a minimum of 4 hours L1pon completion of the 4 hour exposure, the temperature of the chamber slrnll be reduced, over a period ofJO minutes -i. 2 minutes, to+ 145'T (+63"C) The mount shall be maintained at this extreme temperature for a minimum of 2 hours Upon completion of the 2 lh)Ur exposure and while at i l 4S''F < 1 <iJ"C), the mount shall again be subjected to the operability tests Upon completion of the temperature test the muunt shall be surveyed for external tritium conta111ination The contamination test shall be performed by wiping the item under test with tilter paper moistened in distilled \Vater The damp filter paper shall be placed in a conrniner wnh the proper percentage of scintillation liquid, \Vhich is determined by the type Of SCintillation tC'St equipment used to determine the actual contamination Insert the sample into this system, coui11 a minimum of2000 disintegration's and convert the readout into microcurie (222 DPM 10"1
" I microcuric) The mount shall be rcJccted, if the measured contamination exceeds I OOOdpmi l 00 sq cm.
TELESCOPE (First Article Testing)
The telescope shall be placed in the test chamber and the temperature of the chamber reduced, over a period of 4 hours .r I 5 minutes. from room ambient t1•mperaturc to -50'l (-46''(') The telescope shall lw maintained at this temperature for a minimum of 5 hours. l 'pon completion of the 5 hour exposure the temperature of the chamber shall be raised. over a period of 4 hours 1 J 5 minutes. tn room ambient tempcrat~re The telescope shall then be remo\'cd frnm tire test chamber and subjected to external tritium contamination test The telescope shall again be placed in the test chamber and the temperature of the chamber raised, over a period of 4 hours 1 I<;; minutes. to+ l 60"F (+ 71°C) The telescope shall remain at this temperature for a minimum of 5 hours Cpon completion of the 5 hour exposure the temperature of the chamber shall be reduced, over a period of 4 hours :~ 15 minutes. to room ambient temperature The telescope shall then be removed from the test chamber and subjected to external tritium contamination test and the tritium diffusion test The external tritium contamination test is conducted as outli111..~d for the mount The tritium diffusion test shall be performed by submerging the telescope in a measured volume of distilled or deionized \Vat er equal to approximately I 0 times the Vt)lume or the scope f(.)f 24 hours at 23" 1 5"C Scopes shall then be removed from the water rl1e water sliali be analyzed and if the radioactive content of the water exceeds 50 nanocuries/day, it shall constitute failure of the test
£°f1J I
'ITLESCOPE (Lot Acceptanrt> Testing)
Same as the First Article Testing except that there is no swipe tests conducted after the temperature tests The tritium diffusion tesl is the only test used to validate the integrity of the tritium vials and it is conducted atler all 1."hcr testing is completed
First Article Test
Mount: Temperature testing on the mount was conducted over the period 2-7 Feb I <>9~ Tab A dcpicls the temperature plot f()r the cold temperature test nrn on 2 Feb ·i .1b B depicts the temperature plot fr>r the hot tempc:--~ture test run on 7 Feb These tt'sts were done on the mounts identified as SN I 06, I 07 and I 08 Tab C is a record of the swipe te'lting The last entry represents the swipe data taken atler the temperature test and confirms that the mounts shmved no exterior tritium contamination
Teles<'.ope: Temperature testing on the telescope was conducted over the period 24-2() May 1995 Tab IJ ckpicts the temperature plot for the cold temperature test run on :>l May Tab I: depicts the temperature plot for the hot temperature test nm on 24-:.::~ May The~e tests \Vere done on the mounts identified as I, 2 and 3 Tab Fis a record of the swipe testing The third entry represents the swipe data tal..:cn after the cold portion of the temperature test and confirms that the telescopes showed no exterior tritium contamination The fourth entry represents the swipe data taken after the hot portion of the temperature test and confirms that the telescopes shO\ved no exterior tritium contamination Tab G is a record of the results nfthc ditfosion test run on the telescopes on 25-26 ~1ay The lirst entry is pre-soak swipe results and the second cntlT is the post-soak data. This data confirms that there was no tritium contamination caused by the temperature test
Lot ACl'eptanrr ·rrst
Mount: Temperature testing on the mount was conducted over the period 25-27 Oct 1995 Tab H depicts the temperature plot for the cold temperature test run on 25-26 Oct Tab I depicts the temperature plot for the hot temperature test run on 26~27 Oct These tests \.Vere done on the mounts idemified as #00'2, #008 and #0 I 0 Tab J is a record oft he swipt· testing taken attcr the temperature test and confirms that the mounts showed no exterior tritium contam1nat1011
Telescopr: Temperature testing e~ the telescope was conducted over the pcrind 14-1 (, Nov l 99S Tab K depicts the temperature plot for the cold and hot ternpcrat111e test These te~ts were done 011 the telescopes identified as 7, 8 and 11 There were no swipe tests cc:iductcd atler the cold and hot temperature tests because these were only mandated for the First Article Test Tab Lis a record of the results of the diffosion test This data confirms that the telescope had 110
tritium contamination caused by the temperature test.
Independent Laboratory: The contract also requires that an independent laboratory conduct swipe testing on <t random sampling of the mounts and telescopes That test inti was done bv Canatom Inc and the results are shown at Tab M Since the lot was small, 9 mnunts and I 0 telescopes, Canatom elected to swipe test all of the mounts and telescopes These swipes were conducted on I 7 Nov I lNS after completion of the Lot Acceptance Test The data validates that there \.Vas no exterior tritium contamination on any of the items It also rc-cnntirms that those mounts \.vhich undcrn·cnt temperature testing (mounts #2, #8 and #I 0, and telescopes #7. 1f8 and ti I I ) arc free of contamination
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~-13-1996 12:52 AO=t..A I ROCK I SUH) 309 782 6758 P.02
DEPARTMENT OF THE ARMY UNITED 8TA11EI ARMY TANK· AUTOMOT1VE AND ARMAMENTS COMMAND
ARMAMENT AND CHEMICAL ACQUISITION AND LOGISTICS ACTIVITY ROCK llLAND, IU.INOIS 112H·7UO
March 13, 1996
AMST A-AC-SF
U.S. Nuclear Regulatory Commission Sealed Source Safety Section ATf'N: Mr Douglas A. Broaddus Source Containment and Devices Branch Division of Industrial and Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards Washington, D.C. 20555-0001
Dear Sir:
References:
a. Memorandum from AMSTA-AC-SF, 12 Feb 1996, no subject (request for amendment of Registration NR-0155-D-121-S--Temperature, containing memo AMSTA·AR-QAS, 12 Feb 1996).
~ b. Memorandum from AMSTA-AR-QAS, ~far 1996, no subject (request for amendment of Registration NR-0155-0-121-S--binding Material and Cavity Size) Encl 1.
c. Phonecon, 13 Mar 1996, Mrs. Peterson, A.M:STA-AC-SF, and Mr. Broaddus, NRC.
Attached is a package which requests amendment to the registration for the M67 Sight Unit. The amendment is requested for three reasons:
a. to clarify use and storage temperature limits for the M67 Sight Unit. See para 5 of AMSTA-AR-QAS memo, reference b above.
b. to change drawing 9360181 to call out the use of R TV (Potting Compound, MIL-A-46106 Group I, Type I, Clear) for "gluing" the tritium source into the index. See para 4 of AMST A-AR-QAS memo, reference b above and drawing attached (Encl 2).
c. to change drawing 9360175 to call out a cavity in the index which is more
9604020158 960212 POR RC * SSD PDH
~-13-1996 12:52 ACAL.A, ROCK ISLF=N) 309 782 6758 P.03
rectangular to assure that the rectangular tritium source has sufficient clearance, 0.01 inch. in all directions . See para 4 of AMSTA-AR-QAS memo, referemce b above, and drawing attached (Encl 3).
The point of contact for this action is Mrs. Betty Peterson, AMSTA-AC-SF, (309) 782-2962, FAX (309) 782-6758.
Sincerely,
3Encls Ii~ Chief, Safety Office
. AMSTA-AR-QAS March 13, 1996
MEMORANDUM FOR Commander, U.S. Am1y Am1ament and Chemical Acquisition and Logistics Activity (ACALA), ATTN: AMSTA-AC-SF, Rock Island, IL ol 299-6000
SUBJECT: 1\167 NRC I: ~/istrauon
I. References:
I. I NRC Letter dated 23 Jan 96 with attached NR-0155-0-121-S
1.2 Af\1STA-AC-SF Letter to the NRC, 12 Febru'lfy 1996
1.3 FONCON, 05 March 96, between Mr.Broaddus, NRC, and Mr. Lovelace, AMCPM-MO.
2. Ref 1.1 registration wa!> re\ icwed and a change requested per Ref 1.2. Subsequent to that request, a failure occ.:urred during acceptance testing. Two changes to our drawing package must be providt:d to the NRC for review and amendment of the M6 7 NRC Registration. This issue was hrietly Lliscussed \\'ith Mr. Broaddus during Ref 1.3 conversation and it was recommended by Mr. Broaddus that this additional information be provided to the NRC to act upon concurrent with the Ref 1.2 request.
3. At issue is the breakage of the index lamp (PN 11733 738) in several telescope mounts during acceptance testing. The breakage occurred as a result of an improper test by the contractor; however, during the enginecri ng evaluation of the incident, it was noted that the index lamp assemblies had not been assembled in accordance with drawing #9360181. The variances to the drawing were: a) the use of RTV as the potting compound rather than Sil.GUARD and b) the failure to meet the prescribed 0.01 inch clearance between the lamp and the plastic index, in which the lamp is housed.
4. Further review revealed that the prototype units used in the ANSI testing and the government durability testing had been potted with RTV. Clearance could not be validated on the prototype units so the decision was made to modify the index drawing tn insure that all production potted index assemblies would have the full .OJ inch clearance between the lamp and the index in all directions. These decisions have resulted in two changes to the drawing pa~kage previously approved by the NRC. The affected drawings are #9360181 (lm.h:x (Potted)) and #9360175 C .Hlcx). Attached find Engineering Change Proposal D6J200 I which changes the potting
compound from SILGUARD to RTV on drawing #963081 and enlarges the cavity dimension of the plastic index on drawing #9360175. The change to RTV insures that the production item is identical to the prototype umts which underwcnt durability testing and ANSI testing. The change to the cavity dimension insures proper clearances are available between the lamp and the index ..
5. It was also noted during the Ref 1.3 FONCON that it was not clear as to exactly what temperature range we were requesting for firing of the mortar as opposed to storage and handling. Our requirement is to be allowed to fin: the mortar within the temperature range of -33°C to -t 71°c, but be able to store and handle the sight unit within the temperature range of -46°C to + 71°c. The Operators Manual prohibits firing l 20MM ammunition at temperatures below -33°C. In order to preclude any chance of being in violation of our registration we would desire that the registration authorize both storage and firing at temperatures a~ low as -46°C; however, if this will require additional review time within the NRC, then the -33°C to +7t 0c range for firing and the -46°C to+ 7 l 0c range for storage and handling is acceptable.
6. Request expeditious actio· to obtain a modification of the NRC Registration as this action is required prior to Material Release. Material Rdeasc is scheduled for 29 March 96 and the NRC Registration will he required by ~2 March to allow us to meet that release date. If there are any questions concerning the attached ECP's please contact the undersigned at DSN 880-3047.
I Encl
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James E. Elliott, PE Chief, System Safety Office as
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CONFIClURATION CONTROL BOARD DIRECTIVE 11. PAN -------=::;... ---------4
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......_~~--~----------~------------! 10 P051TION ON RECOMMENDATION TO CONJ'IGURATION MANAGER
OFFICE SYMBOL SIGNATURE CONCUR
vtS NO
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YES NO OFFICE SYMBOL 61GNATURE
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I 1 REMARKS
Recommend approval. These changes have been agreed upon and concurred in by Hughes-Elcan and /l.RDEC, and have been prove:i out. in ANSI-N54(l a1.d other testing.
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9360181 R -002
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b. CODE I c. TELD1RO!l."E NO.
16. COJ'lif1Gl1l~TION ln:M NOMJ:Nt.LATIJRE ~ PRODl'CTION M67 SIGHT UNIT (MORTAR) YES II NO
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19. DE.SCRIP110N or OIANGE
INCREASE RECESS SPACE FOB LAMP
20.1\LED FOR nt.\NGE
IMPROVE MANUFACTURABILITY AND RELIABILITY
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... 7.CAGECODE 8. DOl.l!MENT NO.
STEPHAN KOSONOCKY PICATINNY ARSENAL, NJ 07806 19200 D 9360175 9. TITI.E OF DOCUMENT 10. REVISION l..F.ITER 11. ECP NO.
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WAILUK. PICATINNY ARSENAL.NJ 0780fi 19200 93(,()181 9. TITLE OF DOCUMENT 10. lll."VISION l.El1'ER 11.ECPNQ.
INDEX (POTTED) a.CU1lRENT b.NEW
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<l'l'MMDDI I
\
DD f'orm 1695. APR '12
NOTICE OF REVISION (NOR) 1. DATE Form Approved (YYMMOD)
THIS REVISION DESCRIBED BELOW HAS BEEN AUTHORIZED FOR THE DOCUMENT LISTED. 960308 OMB No. 0704 • 0188
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4. ORIGINATOR b. ADDRESS (SITHt, City, State, Zip Code) 5. CAGE CODE 6. NOR NO.
a. TYPED NAME (Firwt, /rliddl• lniti•I, AR DEC 19200 D6J2001-003 I.Mt} Picatinny Arsenal, NJ 07806-5000 7. CAGE CODE 8. DOCUMENT NO.
Dinesh Chheda AMSTA-AR-QAC-S 19200 MIL-M-71028 9. TITLE OF DOCUMENT 10. REVISION LETTER 11. ECP NO.
Mount, Telescope: 9356166 a.CURRENT b.NEW
A D6J2001 12. CONFIGURATION ITEM (OR SYSTEM) TO WHICH ECP APPLIES Sheet 1 of 1 M67 Sight l'nit 120MM Battall ion Mortar System
13. DESCRIPTION OF REVISION
Change 4. 4. ~. 3 Funct i ona 1 Lests.
From: The t e~~ t. s in 'fable II shall be perfonned on a 1ooi basis.
To: The tests in Table II shall be performed on a 100% basis, conducted dt the :::t.andard ambient conditions only.
14. THIS SECTION FOR GOVERNMENT USE ONLY
a. (X one) x (1.) Eioating document supplemented by thi1 NOR may be used in manufacture.
(2.) Reviaed document muat be received before manufacture may incorporate thi• change.
(3.) Cuslodian of master document shall make above re.vision and fumish revised document
b. AUTHORITY AUTHO.RIZED T_O AP_PROVE CHANGE~ GQVERNME~j:c· TYPED Nj\ME (First, Mj.ddle ln~tial, La_st), /lfi-J( /'A' M, \ / \ / 1 rr~,,./) / /.. 11~,·L9' Y
d. TITLE o. SIGN\1UA~ / . •j/ I. DATE SIGNED
A-P f1 :-lfL L-J- ;111&=!- ,--. j / . - -~ I { ry:£)~r·s { 1l·,_,.._ _ _,,,. ) ,,."'-..;-"' ·._ ()
1Sa. ACTIVITY ACCOMPLISHING REVISION b. R1t/ON COMPLETED (Signature)"- J I. DATE SIGNED
' DO Form 1695-E, APR 92
LllSTEIBUTl<JtJ .STATLMi.:tJT A: Unl 1rnited
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TOTFl. P.05
• ' MAR-21-1996 10:59 FROM US ARMY APDEC
u. s. Nuclear Regulatory Com.mis!ion Attention: Mr. !>ouqlas Broaddus
Dear Doug 1
TO 73014155369 P.02
This is to document the telephone conversation between yourself, Mark Lovelace and Bruce Piper (both from ARDEC, Picatinny Arsenal).
1. The following was diecussed wtth reterence to le~ter trom AMSTA-AC-SF dated March 13, 1996.
a. The index (potted assembly, P/N 936018) is a common part with the M64Al sight unit.
b. ~he index (F/N 936C175) is bein9 chanqed eo that the cavity is aliqhtlv lcnqer and mvre rectan~uiar to ensure that there is adequate clearance all around the tritium lamp between the olass and plastic.
c. The pottinq compound is being chanqed to the same materiel as used in the M64Al and in two of the units teeted ~o ANSJ N'540 rAqui,..AmAnt.s. In effect, the drawinQ {9360181) is being changed to reflect what was previously built.
d. The requirement to test he index potted assembly to minus GOF to plus 16Gf' ia tit ill in pffp,rr. Tr f.qr:t, last week thirty of these assemblies, ·.with the chanqes incorporated, were aucoaasfully t~ating to this tampQra~urQ.
2. The fcllowin9 w•'" diacua1cd ~ich refex·&n::Q to lQtte.r from AMSTA-AC-SF, dated February 12,1996.
a. In Tab C of t~is letter, the listed vial numbers 106, 107 and lC8 corrcopond to Firet hrticle Mount&, SQrial Number& HlOOOl, H10002 and HlOJOJ.
b. In Tab F, vial numbers 1, 2 and 3 correspond to First Article Elbow Teleecopee, Ceriol Numbers HOOOOl, H00002 and H100003.
9604020197 960212 POR RC * SSD PDR
tl. S. Nuclear Regulatory Cr;nur.ission Attention: Mr. Douqlas Broaddus
c. Co~1cerninQ your questi·:ms regarding tJHi termino:.ogy in the 1wipe and diffusion data, informat.ion providej by cur Radiation Pzotec~ion Office is attached.
Concurrence:
Concurre"\ce:
~Mf41-j4----11. rlieear Radiation P•otection Office MDEC
Brar.ch, FSAC
·1 -:r .1 . ; 1' ·\ } · 1 t ·"
~' I~ •• ~ " !
~-··--···-....-·---··· .......... -...... ··~·--~····----~ . ._...---------·~--··w
~ MAP-21-1996 11 : O<a FRCtl US ARI·: , ARDEC TO 73014155369 P.04
.. ,
type 191 (Message I 191: 4294 bytes, New) Date: Thu, 21 Mar 96 9:21:03 EST From: Richard L. Moss (DPSEA~ <rmoss@P!CA.ARMY.MIL> To: cpiper@P:cA.A.~.MlL r.r.: [email protected], [email protected] Subject: Answers to NRC Questions A..bot.:t the M67 Sublf.ission
B!"UCe
Rich 6eked me to anewe~ some questions the NRC a&ked:
l. What is the BASE coJnt?
A. ~he BASE sample is equivalent to tte BACKGROUND sample that we normally use when we do ~count. I~ i• a cl•8n vi~l whi~h ia filled with the £ame cocktail and (if it is a soak/diffuslon t.eit) same amount of water as the sample being eoi.lnted. They eubt:rac:t th .. cprn r~su1t to r.~i-.'9!rmi ru~ t:.he net count rate. The idea is to subtract the activity that naturally occurs in the clc•n cocktail. The differenc• in terminoloqy i• aimply 1-hp niff~rence between Canadian/European culture and American culture.
Q. What is the SACKGROONO count?
A. It is the co\:.n't of a vial which co1nes with the Beck.mat'\ calibration vial set. This vial l~ yesigned to ree~lt in the lowcct po~eible count. It uGe1 the iame cocktail as the seek.man calibration e';.andard wi t:1 no tritium added. The gas in the v1al, normally oii: for normal eour..te, ie :::-eploced with !1.1t:-oqen which causes less quench and therefore increases the count:ng efficiency. It i& valid to uee this vial as the background when c:ouHt.iuy the calibration standard (althou9h since the count rates are normally so high it's unimportant). However you shouldn't use it es a background tor daily counts becauae it' e r.ot t.he 1ame as the normal counts (nit:t:ogen versus air atmosphere, different aMount and 1uantities of cockta11, etc). ~ r Huqhes , tr.ey don't .
Q. What is the meaning of ESCR?
A. ESCR 1tands for "External Standards Count Ratio". lt is a number qeneratec l:>y th• B•ckl'Mn T.R1t'>OC which relates to the ef!ieiency of the count. Lieuia 1cintill&tion counting differ• from other type1 of radiation measurement in that th•r• ar~ ~rl~i~ional factor• that effect efficiency. The efficiency of the cocktail is one. How murky the cocktail ia ii another. Even a little color aff~~t~ th- ~f!ic~ency. These thinas can affect how efficiently the pulses of light are generated as well as how efficiently they get cut of the solution to b~ eourt~rl. Since these factors can vary for each vial counted tt ii ~ecessary to determine the efficiency for each count. The ESCR method ueed by Beck.man in thi• machint1t 11AA,. an externe l standard (usually Ce 13 7) which ie outside tte vial (hence the word external) to expose the contents of the vi41 to rQdiation. Tho&a factorc I listed reault in "qa~nch" which has the effect of shiftin9 the whole 1pectrwn (energy per pulse o= channel on the hott~~ of the graph Qnd number of pul~et counted in the ehannel on the left side of the graph) to the left. The LS100C measures tr.e spectrum ~u Lwo r~giono. One of the regiono repreeente t~e up slope of the epectrum while the o~her r~presents the down 1lope, and the amount that the spectrum ha.es been ~hifted .i.e reflected in the ratio of the two counts. Thl~ Lttt-'.u relatea directly to the amount of quench and therefore with the efficiency !!c~h~1 ~~~:~ · At uu9hea, they ~•v• 1t ~uencn se't which contains ten vial·c:
• same 4l'l:lount and k1nd of cocktail the w 1 same amount of ~ritium,
TC
bu:, di:.tfering amounts ot a qt:en<.:h L?:.g agent. Tli~.r pei. iodically count tr.eee vials and sinC'e t.hev know the q..ian:.ity of tritiu.>r. in each ':hey car. calculate the counting ~ffici~ncy for eect. ~hey ~hen make a y1a~!, (~alled a quench curve) wh~ct shows the relat!onsh1pe between ~he meas~red ES~R and the calcJla::ed efficiency. They use r.td.S graph \.o det.ern:i.ne the t:f!.i.l...:.twcy of ee.ch sube~quent count based on the caunt's ESCR. In pra:tice L~ey don't make a manual quench c~rve at Hughes. !nateAd tney puL the data into a ~p,~c~ sheet computer program which int.e'.!'."nally generet:.es the quer1ct curve and the:1 gives thetn a t.a.ble of. F.SCR versl:.& et:J_@ncy whicr1 t.hey use ir: :.he;;.i..t. ua.i.ly
count&.
Hope ttli is a help to you.
D1ck M<.:>ss Heal~h Physicist
TOT.:lL. F.115
MEMORANDUM TO: John R. Madera Region I II
/
March ') ')
""" .... ' 194b
Douglas A. Broaddus, Mechanical Engineer Is/ Sealed Source Safety Section
FROM:
Source Containment and Devices Branch
Division of Industrial and Medical Nuclear Safety, NMSS
SUBJECT: SSD TECHNICAL ASSISTANCE REQUEST: DEPARTMENT OF THE ARMY CONTROL NO. - 398596 LICENSF. NO. - 12-00722-06
Attached, please find a copy of corrected registration certificate
NR-0155-0-121-S, associated with Department of the Army's license application.
If you have any questions, please contact me at (301) 415-5847 or Mr. Steven
Baggett at (301) 415-7273.
Attachment: As stated
cc: SKimberley, LFDCB (w/o attachment) James Hullauer, Riii (w/attachrnent)
Q1str1 but ion; SCDB r/f SSD-95-15 NEOl SSD File # NR-0155-0-121-S
DOCUMENT NAME: C:\WPOOCS\SSOS\OLD SSUS\NR155121.TR2 Te....,_ a Mll'Y ef tNe ........... ......._la dM Ma: "C" 8 Copy without att~enololUrW ·1· • Copy with~~ "N" • No copy
SCDB E
MEMORANDUM TO: John R. Madera Region III
/
March 22, 1996
FROM: Douglas A. Broaddus, Mechanical Engineer /s/ Sealed Source Safety Section Source Containment and
Devices Branch Division of Industrial and
Medical Nuclear Safety, NMSS
SUBJECT: SSD TECHNICAL ASSISTANCE REQUEST: DEPARTMENT OF THE ARMY CONTROL NO. - 398596 LICENSE NO. - 12-00722-06
Attached, please find a copy of corrected registration certificate
NR-0155-0-121-S, associated with Department of the Army's license application.
If you have any questio~s, please contact me at (301) 415-5847 or Mr. Steven
Baggett at (301) 415-7273.
Attachment: As stated
cc: SKimberley, LFOCB (w/o attachment) James Mull auer, RI I I (w/attachment)
Distribution; SCDB r/f SS0-95-15 NEOl
DOCUMENT NAME: C:\WPOOCS\SSDS\OLD SSDS\NR155121.TR2
SSO File # NR-0155-0-121-S
Te Nnlve •copy of tNe tloc-1, lftllclrt• Ill IM Ilea: ·c· 8 Copy without attechment/enclo1ure "E" • Copy with attKhmentJenclo1ure ·111e· "'No copy
OFFICE SCOB E NAME DATE
Department ~f the Army Director, ACALA Rock Island, IL 61299-7630 ATTN: AMSTA-AC-SF, Mrs. Betty Peterson
Dear Mrs. Peterson:
~Id r ch . ) •) _ .... ' l qq (1
Based on the information and test data submitted in your letters dated February 12, 1996, and March 13, 1996, and subsequent letters, with enclosures thereto, we have corrected registration certificate NR-0155-0-151-S for the Model M67 tritfum illuminated mortar sight unit. A copy of the certificate has been forwarded to the appropriate Region I reviewer for licensing action.
Please be advised that you must ensure the product is manufactured, distributed, and used in accordance with the statements and representations contained in your application, with enclosures thereto, and the information set out in your registration certificate. As a general rule, you must request and obtain an amendment to the certificate before you make changes or modificatio~s to the information submitted to obtain the certificate.
Please read over the registration certificate in its entirety and notify us illlllediately of any errors or omissions.
You are obligated to notify us promptly in writing should you decide to no longer distribute or use the product.
Please be aware that, as a holder of an NRC registration, you may be subject to the NRC's licensing and inspection fees in accordance with IO CFR Part 170, and annual fees in accordance with 10 CFR Part 171. If you have any questions concerning the fee requirements, please contact the License Fee and Debt Collection Branch at (301) 415-7544.
If you have any questions, please contact me at (301) 415-5847 or Mr. Steven Baggett at (301) 415-7273.
Enclosures: As st1ted
Sincerely, Isl
Douglas A. Broaddus, Mechanical Engineer Sealed Source Safety Section Source Conta;nment and
Devices Branch Division of Industrial and
Medical Nuclear Safety, NMSS
cc: Sandra Kimberly, LFDCB (w/encl.) Distribution: SSD-95-15 SSSS R/F NEOl SSO File # NR-0155-0-121-S
DOCUMENT NAME: C:\WPOOCS\SSOS\OLD SSDS\NR155121.CH2 To NCttw o cottY of tHt M-..t, lnllcat• In tho lloa: "C"'" = Copy without ottec~nt/encloour• "E" • Copy with attechmont/encloaure "N" "' No copy
Department of the Army Director, ACALA Rock Island, IL 61299-7630 ATTN: AMSTA-AC-SF, Mrs. Betty Petersor1
Dear Mrs. Peterson:
March 22, 1996
Based on the information and test data submitted in your letters dated February 12, 1996, and March 13, J996, and subsequent letters, with enclosures thereto, we have corrected registration certificate NR-0155-0-151-S for the Model H67 tritium illuminated mortar sight unit. A copy of the certificate has been forwarded to the appropriate Region I reviewer for licensing action.
Please be advised that you must ensure the product is manufactured, distributed, and used in accordance with the statements and representations contained in your application, with enclosures thereto, and the information set out in your registration certificate. As a general rule, you must request and obtain an amendment to the certificate before you make changes or modifications to the information submitted to obtain the certificate.
Please read over the registration certificate in its entirety and notify us inrnediately of any errors or omissions.
You are obligated to notify us promptly in writing should you decide to no longer distribute or use the product.
Please be aware that, as a holder of an NRC registration, you may be subject to the NRC's licensing and inspection fees in accordance with 10 CFR Part 170, and annual fees in accordance with IO CFR Part 171. If you have any questions concerning the fee requirements, please contact the License Fee and Debt Collection Branch at (301) 415-7544.
If you have any questions, please contact me at (301) 415-5847 or Mr. Steven Baggett at (301) 415-7273.
Enclosures: As stated
Sincerely, Isl
Douglas A. Broaddus, Mechanical Engineer Sealed Source Safety Section Source Containment and
Devices Branch Division of Industrial and
Meciical Nuclear Safety, NHSS
cc: Sindra Kimberly, LFOCB (w/encl .) Distribution: SS0-95-15 SSSS R/F NEOl SSD File I NR-0155-0-121-S
DOCUMENT NAME: C:\WPOOCS\SSDS\OLD SSDS\NR155121.CH2 Te NC4llw a oepy of tMe --.. IRdceta In the boa: ·c,.. • Copy without attachmentlanclo1ur1 "E" • Copy with attachment/enclo•ure "N" .. No copy
OFFICE c NAME DATE
COPY
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
HQ;_ NR-0155-D-121-S DATE; Karch 22 1 1991 PAGE 1 OF 9
DEVICE TYPE: Mortar Sight Unit
MODEL; M67
.lllSTRIBUTOR;
MANUFACTURER:
Department of The Army Director, Armament and Che~ical Acquisition
and Logistics Activity Rock Island, IL 61299-7630
Hughes Leitz Optical Technologies, Ltd. 328 Ellen Street Midland, Ontario, Canada LAR 2H2
SEALED SOURCE MODEL DESIGNATION: Tritium source vials manufactured to Department of the Army part numbers 9356141, 9356170, 11729510-1, 11733736, 11733738, 11733744-1, and 11733744-2 (see limitations).
ISOTOPE: MAXIMUM ACTIVITY:
Hydrogen-3 (Tritium) 5.79 curies (214.2 GBq) (11729510-1, 2 @ 0.05 Ci/1.85 GBq
P-ach) (11733736, 1 @ 1.0 Ci/37 GBq) (11733738, 3 @ 0.03 Ci/1.11 GBq
each} {11733744-1, 1 @ 0.7 Ci/25.9 GBq) {11733744-2, 2 @ 1.0 Ci/37 GBq) (9356141, 2 @ 0.4 Ci/14.8 GBq
each) (9356170, 1 @ 1.1 Ci/40.7 GBq)
LEAK TEST FREQUENCY: Not Required
PRINCIPAL USE; (W) Self-Luminous Light Source
CUSTOM DEVICE; x YES NO
CUSTOM USER: U.S. Department of Defense Principally the Department of The Army
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AllEWDED IN ITS ENTIRETY)
HQl. NR-0155-D-121-S DATE; March 22, 1996 PAGE 2 OF 9
QEVICE TYPE; Mortar Sight Unit
QESCRIPTION:
The Model M67 Mortar Sight Unit is a modified version of the M64 and M64Al Mortar Sight Units. The modifications included changing several of the light sources and their mounting, and modifications to the unit to allow its use on a 120 mm mortar and to make it more rugged due to the greater shock forces it will experience.
The M67 Sight Unit consists of an elbow telescope assembly (consisting of an eyepiece assembly, a reflecting prism as3embly, and the sighting cell assembly), and a mount assembly containing four aiming scale assemblies. The elbow telescope and each scale assembly contains one or more tritium light sources as shown in Attachment 1. The light sources are manufactured by mb-microtec (Model 400 Series), or other approved supplier, according to the Army's specifications, and are secured in the assemblies by means of an epoxy adhesive. In addition, each light source is provided protection from external damage by a molded plastic scale and/or metal enclosure. overall dimensions of the elbow telescope are approximately 4.3" x 1.9" x 4" (10.9cm x 4.Bcm x 10.2cm) and of the mount are approximately 5" x 4.5" x 6.5" (12.7cm x ll.4cm x 16.5cm). When assembled, the overall device measures about 5" x 4.5" x 8.9" (12.7cm x 11.4cm x 22.6cm).
The elbow telescope body is constructed from cast aluminum alloy. The mount is constructed from cast aluminum alloy and stainless steel. The telescope is secured to the mourt by means of a stainless steel cylindrical holder and clamping wingnut. In addition, accidental or unauthorlzed separation of thP telescope from the mount is prevented by means of a mounting ring installed on the telescope with a set screw that requires a special tool for removal. This mounting ring prevents the telescope from being withdrawn from the cylindrical mount.
Each of the sighting scale assemblies are constructed from cast aluminum alloy into which one or two light sources (0.03-1.1 Ci each) are mounted and secured by an epoxy adhesive. The light sources are intended to provide illumination of the aiming scales in low light conditions. The scales are constructed from transparent molded plastic and are glued and screwed onto each assembly, covering the tritium light source. The scales also provide additional protection for the light sources from external impact hazards. The scales contain a total of 4.99 Ci tritium.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
NQi. NR-0155-0-121-S DATE: Karch 22, 1996 ~ 3 OF 9
DEVICE TYPE; Mortar Sight Unit
DESCRIPTION; (Cont'd)
The elbow telescope assembly contains two additional tritium light sources (0.4 Ci each) in the eyepiece to provide illumination of the aiming cross hairs in low light conditions. These sources are secured in an aluminum assembly by means of an epoxy adhesive and an aluminum retaining ring. This assembly is next inserted in the eyepiece and secured by means of an epoxy adhesive. The eyepiece assembly is then inserted in the body of the telescope and secured with an epoxy adhesive. The entire telescope assembly is sealed with a sealing compound to prevent the ingress of contaminants in the optical assemblies.
The fully assembled unit is mounted to the mortar by sliding the base plate of the mount assembly into a corresponding slot on the mortar barrel. A spring actuated locking mechanism secures the baseplate in the slot on the mortar. After firing the mortar, the locking m~chanism is released by means of a lever on the mount body anrl the sight unit may then be removed.
The sight unit is stored in a padded, fiberglass or nylon carrying case when not in use. The ca~e protects the sight from incidental drops and impacts during transport from site to site, and reduces the exposure of the sight to humid and dirty environments.
DIAGRAM;
See attachments 1-3.
LABELING;
The M67 sight units contain several labels on che telescope assembly and the mount assembly. The labels are made of adhesive backed metal foil, aluminum alloy or equivalent attached by screws, and adhesive backed decal material. Lettering is stamped, engraved, or painred and coated with a finish material.
The information contained in the labeling on the telescope assembly includes the radiation trefoil symbol, isotope (H3), activity (contained in the telescope assembly only), date of source vial manufacture, telescope serial number, the words
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(UDDED IN ITS Elft'IRETY)
~ NR-0155-D-121-S DATE: March 22, 1996 PAGE 4 OF 9
DEVICE TYPE: Mortar Sight Unit
LABELING; (Cont'd)
"CAUTION-RADIOACTIVE MATERIAL," and a statement that the device, if found, should be returned to any military base.
The informati0n contained in the labeling on the mount assembly includes the radiation trefoil symbol, isotope (H-3), activity (contained in the mount assembly only), date of source vial manufacture, mount serial number and date of manufacture, the words "CAUTION RADIOACTIVE VIALS, SCALES, INDEXES" and "Sight Unit, M67," the NRC License Number, and a statement that the device, i.f found, should be returned to any military base.
CONDITIONS OF NORMAL USE:
The sight unit is intended for use on 60 mm, 81 mm, and 120 mm mortar systems (principally 120 mm) in a towed or carrier configuration. During firing of the mortar, the sight unit experiences extreme shock percussions and vibration. When not in use and during transport, the sight unit is stowed in its case inside a vehicle. During transport, the unit and case may experience extended vibration, drops from several feet, and a variety of impacts. In addition, in the towed configuration, the mortar unit may tip over and fall on the sight unit. The sight unit is designed to withstand repeated exposure to these conditions. The optical components of the unit are likely to become unusable before damage to the tritium glass vials occurs. The unit would be then be taken out of service. As the sight unit requires a person for mounting and unmounting, the unit will always be used in environments suitable for human occupancy. Typical uae teaperature raaqe is -33°C to 71°C (-27°F to 160°P) with occasional extremes to -S0°F (-46°C).
PROTOTYPE TESTING:
The M67 sight unit is essentially a modified M64Al (a variation of the M64) sight unit. Therefore, initially an M64Al sight unit was modified to meet the design specifications of a M67 sight unit. A prototype M67 was then constructed and both units were subjected to the following t sts:
·Temperature (sight only) ......•... 65°C & -30°C, hold for 60 min. each.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
lfQ.;_ NR-0155-0-121-S QAI..t:~ March 22, 1996 PAGE 2 OF 9
DEVICE TYPE; Mortar Sight Unit
PROTOTYPE TESTING: (Cont'd)
·Thermal Shock (sight w/case) ..•... 65°C for 15 min. to -J0°C (immediate) for 5 min.
·Reduced pressure (sight w/case) ... Hold at 175 mm (6.89 11 ) Hg for four 15 min. periods.
• Impact (sight w/case) ............. Dropped 20 times from 1 m ( 3. 28') and 2 times from 2 m (6.56') in various orientations.
·Vibration (sight w/case) .......... 10 to 55 Hz in 1 min.; 0.075 cm (0.030") amplitude; 0.15 cm {0.060") max. excursion.
· Immersion {sight w/case) .......... 0°C (32°F) bath for 15 min.; 65°C bath for 15 ·.in., 5 cycles.
· Soak (sight only) ................. Immerse in a water bath for 24 hours.
The above tests were conducted in accordance with an ANSI N540 teat level of 6, with the exception of the immersion test temperature that was reduced to 65°C. The custom user indicated the units would not normally encounter temperatures greater than this during use. Bach unit was also subjected to an additional t .. perature test as part ot the acceptance testinq for these devicea. Bach unit was tested to a temperature ranqe of -S0°F to 160°F (-46°C to 71°C) and held at these temperatures for a ainiawa of four hours. Followinq the additional temperature test each unit was teated for tritium leakaqe by a wipe teat, soak teat, and a visual ex~ination. Both units remained functional following all of the above tests. In addition, visual inspections of the tritium glass vial sources, swipe tests following each test, and the soak test water analysis indicated that the sources were undamaged. The units were tested in their respective cases (first sight in a fiberglass case and second in a nylon case) for the Thermal Shock, Reduced pressure, Impact, Vibration, and Immersion tests since a unit would likely be in its case during incidences of these conditions (e.g., during transport) .
During use of a unit, it is removed from its case and mounted on the mortar. The custom user indicated that during these operations, a unit could be subjected to impacts (drops),
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
NQ.i. NR-0155-D-121-S PATE: March 22, 1996 PAGE 6 OF 9
PEYICE TYPE: Mortar Sight Unit
PROTOTYPE TESTING; (Cont'd)
temperature extremes, and exposure to wet environments (e.g., rain). Therefore, the two units above were subjected to the Temperature and Soak tests without their cases. A production model M67 sight unit was constructed and subjected to th• additional temperature test described above and an additional impact and soak test, all without the case. The additional impact test consisted of dropping the unit 20 times from a height of 1 meter in 10 different orientations selected to impart the most damage to the unit. The unit was slightly damaged during these drops, but the tritium vials showed no damage. On the 21st drop, the height was increased to 2 meters (6.56') to simulate an accidental drop from the maximum height a unit would normally be subjected (during mounting or unrnounting of the unit to the mortar). This drop caused a plastic scale to break off from the unit and expose one of the tritium source vials. A visual examination of the unit and a swipe test indicated no damage to the source integrity or mounting. A second drop was planned, but was not performed as the first 2 m drop exposed the source vial to possible direct external damage. It is expected that the device would be able to withstand a second 2 m impact without damage to the source vials. In addition, the custom user indicated that damage of the type indicated above would cause the unit to be taken out of service and repaired. The production Model M67 was next subjected to the Soak test. The results of this test also confirmed the tritium vials were undamaged. The above test data indicates the device could be given an ANSI N540 classification of T6GC1333443.
In addition, three production Model M67 devices were subjected to simulated and actual shock levels encountered during firing of the mortar. The first and third units were subjected to 850 shocks at a simulated charge level of 4 (the highest level) and 2530 shocks at a simulated charge level of 3. The second unit was subjected to 680 shocks at a simulated charge level of 4. During testing, units 3 and 2 experienced damage to the elevation locking knob. Unit 2 was damaged sufficiently to prevent additional testing. Units 3 and 1 were modified (during testing) to prevent further damage to the elevation locking knobs, and were able to complete the full test. The elevation locking knob assemblies were redesigned and uni~s 1 and 3 were next tested to 500 shocks from live firings (125 at an actual charge level of 4 and 375 at an actual charge level of 3). Units 1 and 3 were then
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
.HQi. NR-0155-0-121-S DATE: March 22, 1996 PAGE 7 OF 9
PEVICE TYPE; Mortar Sight Unit
PROTOTYPE TESTING: {Cont'd)
successfully retested to the full 3380 simulated shocks. No further damage to the units or light sources was noted. Following each shock test, the tested unit was visually inspected for damage and swipe tested for tritium leakage. All tritium vial sources remained secured in the device, were undamaged, and were shown not to be leaking.
Two prototype M67 sight units were also subjected to a series of shock tests, including 1003 live firings at a charge level of 4. The tritium source vials and their mounting were undamaged and determined to not be leaking following the tests.
The U.S. Army indicates Model M64 sight units have been in use on 60 mm and 81 mm mortars since 1983 under conditions similar to those expected lor the M67 unit with no reported incidents of failure of the source vials or containment due to the design of the unit. The similarity of the design and construction of the M67 sight unit to the M64 sight unit indicates the units should perform similarly when used on 60 mm and 81 mm mortars.
EXTERNAL RADIATION LEVELS:
As the device contains only tritium in glass vials, the external radiation levels from the device are not discernable from background.
QUALITY ASSURANCE AND CONTROL:
The U.S. Army is responsible for the design, development, and production of the M67 sight unit. This is accomplished through U.S. Army personnel, contractors and non-government subcontractors. The elements of quality assurance and control {QA/QC) for the M67 are determined and prescribed by the U.S. Army. Each contractor and/or non-government sub-contractor must have a QA/QC program consistent with the requirements specified by the U.S. Army. The manufacturer, Hughes-Leitz, has a QA/QC program for the manufacture and production of the sight units and the installation of the tritium vials that has been approved oy the u.s. Army. In addition the U.S. Army/contractor performs incoming inspections and acceptance tests on completed sights
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
HQ_;_ NR-0155-D-121-S DATE: March 22, 1996 PAGE 8 OF 9
DEVICE TYPE: Mortar Sight Unit
QUALITY ASSURANCE AND CONTROL: (cont'd)
received from the manufacturer prior to release for use. These QA/QC programs have been deemed acceptable for custom licensing of the M67 sight units, and copies of the programs are on file with the Source Containment and Devices Branch.
LIMITAIIONS AND/OR OTHER CONSIDERATIONS OF USE:
· The M67 sight unit may be used only by the custom user as e~ecif ied in this document.
· Handling, storage, use, transfer, and disposal: To be determined by the licensing authority.
• Tl1e Model M67 sight unit may only contain tritium source vials manufactured in accordance with Department of the Army specifications as described in this document and that have been approved and registered in accordance with 10 CFR 32.210 or equivalent Agreement State regulation.
· The device shall not be subjected to conditions which would exceed an ANSI N540 classification of T6GC, with the exception of a temperature range of -50°F to 160°F (-46°C to 71°C), and maximum shock levels as listed in this certificate.
· This registration sheet and the information contain~~ within the references shall not be changed without the written consent of the NRC.
~FETX ANALYSIS SUMMARY:
Based on our review of the Model M67 sight unit, the information and test data cited below, we conclude that these devices are acceptable for custom licensing purposes. Furthermore, based on the prototype testing performed on the M67 units, and that the M67 sight unit is essentially similar to the M64 sight unit that has been used on 60 mm and 81 mm mortars since 1983 with no reported incidents of failure of the glass vials or source containment, we conclude the M67 sight unit would be expected to maintain its containment integrity for normal and accidental
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVAY,UATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
H.Ql. NR-0155-D-121-S DATE: March 22, 1996 PAGE 9 OF 9
DEVICE TYPE; Mortar Sight Unit
conditions of use as specified in this certificate.
REFERENCES:
The following supporting documents for the Model M67 sight unit are hereby incorporated by reference and are made a part of this registry document.
· Department of the Army l~tters dated March 13, 1996, February 12, 1996, December 22, 1995, December 13, 1995, November 22, 1995, November 16, 1995, and March 3, 1995, with enclosures thereto.
· Department ot the Army facsimile received Karch 21, 1996, with enclosures thereto.
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission
Date: March 22. 1996 Reviewer: Dou as A. nroaddus
Date: March 22, 1996 Concurrence: __ j~~ -~~-
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAr'ETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
NO.: NR-0155-0-121-S PATE: March 22, 1996
M67 SIGHT UNIT R.;OJOL_UMINOUS LAMP
LOCATION
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TOTA1 TRITIUM PER S1GHT UNIT 5.79 CURIES
REGISTRY OF RADIOACTIVE SEALED ~;OURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AMENDED IN ITS ENTIRETY)
liQ..w_ NR-0155-D-121-S
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DATE; March 22 1 1996
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Telescope Assembly Components
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Mount Assembly components
ATTACHMENT 2
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REGISTRY OF RADIOACTIVE SLALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
(AKEHDBD IN ITS ENTIRETY)
~ NR-0155-D-121-S DATE: March 22, 1996 ATTACHMENT 3
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