ML20149J007
| ML20149J007 | |
| Person / Time | |
|---|---|
| Issue date: | 07/17/1997 |
| From: | Cool D NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Blough A, Caniano R, Dan Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| SSD, NUDOCS 9707280005 | |
| Download: ML20149J007 (6) | |
Text
. MEMORANDUM TO: A. Rzndolph Blough, Director July 17, 1997 Division of Nucl::r Mit:rirls S!f;ty, RI Douglas M. Collins, Acting Director Division of Nuclear Materials Safety, Ril Roy J. Caniano, Acting Director Division of Nuclear Materials Safety, Rill Ross A. Scarano, Director Division of Nuclear Materials Safety, RIV l
FROM: Donald A._ Cool, Director (orig. signed by)
Division of Industrial and l Medical Nuclear Safety, NMSS l
SUBJECT:
REQUEST FOR COMMENTS ON TEMPORARY INSTRUCTION FOR i AMERSHAM MODEL 660 POSILOCK AND INDUSTRIAL NUCLEAR '
MODEL IR100 RADIOGRAPHY CAMERA RETROFIT INSPECTIONS
. In 1996, the U.S. Nuclear Regulatory Commission became aware of specific scenarios where the Amersham Model 660 Posilock radiography camera and the Industrial Nuclear Model IR100 radiography camera would not pass the horizontal shock test as required by 10 CFR Part 34. A retrofit to the lock slide bumpers was issued by Amersham to correct the problem on the Model 660 Posilock camera. A retrofit to the safety latch plate was issued by Industrial Nuclear to correct the problem on the Model IR100 camera. Inspections are necessary to verify the installation and operability of these retrofits. Attached is a draft of a temporary instruction that NRC plans to issue to provide guidance to inspectors. Please provide any comments to Lany W.
Camper, Chief, Medical, Academic, and Commercial Use Safety Branch, IMNS, NMSS, by August 1,1997.
/
Attachment:
As stated )
CONTACT: Michele L. Burgess, IMNS/NMSS l}llkkkllkh!!
i***'**
(301) 415-5868 (Email MLBS).
280004 DISTRIBUTIOb : w/ enclosure w/o enet.
NEO2-SSD- SSSS Staff all Regional Branch Chiefs IMNS Central
- sra previous concurren e DOCUMENT NAME: A:\660TI.RGN To r*cabe e copy of this document, Indicate in the box: "C" = Copy without attachment! enclosure *E' = Copy with attachment! enclosure "N" = No copy OFFICE IMAB l lMAB l IMOB l lMN81//- l NAME MBurgess/mb* LCamper* JPiccone* DCo'of "
DATE 7/ /97 7/17/97 7/14/97 7/ [*7 /97 9707280005 970717 nFFICIAL RECORD COPY PDR LJ b
- . ** utuq g' t UNITED STATES
- j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20656 4001
\ ,g,/ July 17, 1997
, MEMORANDUM TO: A. Randolph Blough, Director Division of Nuclear Materials Safety, RI Douglas M. Collins, Acting Director Division of Nuclear Materials Safety, Rll Roy J. Caniano, Acting Director Division of Nuclear Materials Safety, Rlll Ross A. Scarano, Director Division of Nuclear Materials Safety, RIV l l
FROM: Donald A. Cool, Director em ,/ {
Division of Industrial and Medical Nuclear Safety, NMSS /
/
'g/ -
)
SUBJECT; REQUEST FOR COMMENTS ON TEMPORARY INSTRUCTION FOR AMERSHAM MODEL 660 POSILOCK AND INDUSTRIAL NUCLEAR MODEL IR100 RADIOGRAPHY CAMERA RETROFIT INSPECTIONS i
i in 1996, the U.S. Nuclear Regulatory Commission became aware of specific scenarios where the Amersham Model 660 Posilock radiography camera and the Industrial Nuclear Model IR100 radiography camera would not pass the horizontal shock test as required by 10 CFR !
l Part 34. A retrofit to the lock slide bumpers was issued by Amersham to correct the problem on the Model 660 Posilock camera. A retrofit to the safety latch plate was issued by Industrial i
Nuclear to correct the problem on the Model IR100 camera. Inspections are necessary to verify ,
l the installation and operability of these retrofits. Attached is a draft of a temporary instruction that NRC plans to issue to provide guidance to inspectors. Please provide any comments to Larry W.
Camper, Chief, Medical, Academic, and Commercial Use Safety Branch, IMNS/NMSS by j l
August 1,1997.
Attachment:
As stated ll CONTACT: Michele L. Burgess, IMNS/NMSS (301) 415-5868 (Email MLBS).
i NRC INSPECTION MANUAL lMABINMSS TEMPORARY INSTRUCTION 2800/0qq AMERSHAM MODEL 660 POSILOCK AND INDUSTRIAL NUCLEAR MODEL IR100 RADIOGRAPHY CAMERA RETROFIT INSPECTIONS APPLICABILITY: 2800 2800/0qq-01 INSPECTION OBJECTIVE To verify the installation and operability of the redesigned slide lock bumpers on the Amersham model 660 Posilo k radio;.aphy camera, and to verify the installation and operability of the safety latch plate on the Industrial Nuclear model IR100 radiography camera.
2800/0qq-02 BACKGROUND in 1996, the U.S. Nuclear Regulatory Commission became aware of specific scenarios where the Amersham model 660 Posilock radiography camera and the Industrial Nuclear model IR100 radiography camera would not pass the horizontal shock test as required by 10 CFR Part 34. A retrofit to the lock slide bumpers was issued by Amersham to correct the problem on the model 660 Posilock camera. A retrofit to the safety latch plate was issued by Industrial Nuclear to correct the problem on the modelIR100 camera. Inspections of the retrofits are necessary to ensure that all cameras have had the retrofit installed.
Appendix A contains Information Notice 96-53, Retrofit to Amersham 660 Posilock Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compatibility, issued October 15,1996, and Supplement 1 to information Notice 96-53, issued June 23,1997, notifying all radiography licensees of the retrofit and informing licensees that effective January 1,1998, units not containing the retrofit will no longer meet the requirements of Part 34.
Appendix B contains Information Notice 97-35, Retrofit to Iredustrial Nuclear IR100 Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compat!bility, issued June 18,1997, notifying all radiography licensees of the retrofit and informing licensees that effective January 1,1998, units not contrining the retrofit will no longer meet the requirements of Part 34.
2800/0qq-03 INSPECTION REQUIREMENTS Each region shall determine the radiography licensees in its region that are licensed to possess
! the Amersham model 660 Posilock and/or the Industrial Nuclear model IR100. During routine inspections for these licensees, inspectors shall ensure through visual inspection that the required retrofit has been made to all Amersham model 660 Posilock cameras and Industrial Nuclear model IR100 cameras at the inspected facility.
Issue Date: 07/xx/97 2800/0qq
l
- l. 03.01. Amersham'model 660 Posilock radioaraohv camera. Confirm with the licensee that the' camera has been retrofitted. Visually examine the camera to verify that the retrofit has been performed. The Amersham retrofit can be visually differentiated by verifying that L the lock slide bumper is held in place by a non-Philips head screw instead of the Philips
(~ . head screw used in the original design. IN 96-53 in Appendix A contains a copy of '
l Amersham's retrofit kit letter and lock slide bumper replacement instructions. Verify .
proper operation of the lock.
f.
~
i 03.02 Industrial Nuclear modelIR100 radioaraohv camera. Visually examine the camera to l verify that the retrofit has been performed. The Industrial Nuclear retrofit can be visually differentiated by verifying that the top part of the plate has a bumper which is welded on the backside of the safety latch plate and which fills a good portion of the space between the safety latch plate and the body of the projector. IN 97-35 in Appendix B l contains a copy of Industrial Nuclear's retrofit le.tter and safety latch plate replacement instructions. _ Verify proper operation of the latch plate. _;
2800/0qq-04 INSPECTION GUIDANCE All retrofits must be completed before January 1,1998.'
2800/0qq-05 ' REPORTING REQUIREMENTS Each region shall document its finding regarding the retrofits in the field notes.
Within 60 (sixty) calendar days of the expiration of this temporary instruction, each region shall send the NMSS contact the names and addresses of licensees that have not been inspected j for the retrofit, and the names and addresses of allinspected licensees that have not completed the retrofit.
2800/0qq-06 EXPIRATION This temporary instruction shall remain in effect until (date of Tl + 24 months).
2800/0qq-07 CONTACT Questions regarding this temporary instruction should be addressed to the Branch Chief,
' Medical, Academic, and Commercial Use Safety Branch, NMSS, at (301) 415-7231.
2800/0qq-08 ORIGINATING ORGANIZATION INFORMATION 08.01 Oroanizational Responsibility. The Medical, Academic, and Commercial Use Safety ,
l Branch of the Division of industrial and Medical Nuclear Safety (IMAB/NMSS) initiated this temporary instruction.
f l
l' Issue Date: 07/xx/97 2800/0qq l
r .m .-e:
,-. . - . .. - - . .. -. = _ - .. .
a l
08.02 Resource Estimate. This inspection will be performed during a regularly scheduled inspection. The estimated onsite inspection time necessary to ensure that the retrofit has been installed is minimal (approximately five minutes per unit). The time to compile the data and prepare the report to IMAB/NMSS containing the final statistics is estimated to be less than 16 staff-hours.
Appendix A - NRC Information Notice %-53, Retrofit to Amersham 660 Posilock Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compatibility, issued October 15,1996,'and NRC Information Notice 96-53, Supplement 1, " Required Retrofit to Amersham 660 Posilock Radiography Camera to Maintain 10 CFR Put 34 Ct.iipatibility", issued June 23,1997 -
Appendi.x B - NRC Information Notice 97-35, Retrofit to industrial Nuclear IR100 Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compatibility, issued June 18,1997 l
l l
END Issue Date: 07/xx/97 2800/0qq
l f Appendix A l
l l
1 l
l 1
l l
1 I
I 1
l
)
i 1
1 l
l l
1 l
1 1
a I
t r
l issue Date: 03/xx/97 A-1 2800/0qq l 1
l I
l
l UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDS WASHINGTON, DC 20555 June 23,1997 NRC INFORMATION NOTICE 96 53, SUPPLEMENT 1: RETROFIT TO AMERSHAM 660 POSILOCK RADIOGRAPHY CAMERA TO CORRECT INCONSISTENCY IN 10 CFR PART 34 COMPATIBILITY Addressees All industria' iadiugmpny licensees Puroose The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to inform licensees that the retrofit to the Amersham Model 660 Posilock radiography camera referred to within Information Notice (IN) 96-53 must be completed before January 1,1998, to maintain 10 CFR Part 34 compatibility. It is expected that recipients will review the information for applicability to their licensed activities, and consider actions, as appropriate, to avoid problems.
However, suggestions contained in this information notice are not NRC requirements; therefore, no specific actiori nor written response is required.
Descriotion of Circum'ta.;gt a
On October 15,1996, NRC issued IN 96-53, " Retrofit to Amersham 660 Posilock Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compatibdty," to make licensees aware of a scenario where the Amersham model 660 Posilock radiograpFy camera would not pass the horizontal shock test, as required by Part 34, and of a retrofit to the Amersham Model 660 Posilock radiography camera, to correct that problem. Appendix A contains a copy of IN 96-53.
Dmcussion To allow licensees sufficient opportunity to request and install the retrofit, units not containing the retrofit will continue to be approved for use through December 31,1997. Effective January 1,1998, units not containing the retrofit will no longer be approved for use. Affected cameras may be checked for completed retrofit during any inspection. Cameras with the retrofit will be deemed to meet the requirements of 10 CFR Part 34.
J70&170E0 #
~f/'.
l l
IN 96-53, Supp.1 I June 23,1997 Page 2 of 2 This information notice'does not require any specific action or written response. If you have
- cny questions about the information in this information notice, please contact the technical ., ,
contact listed below or the appropriate regional office.
j')hflf ll Donald A. Cool, Director Division of Industrial and I Medical Nuclear Safety Office of Nuclear Material Safety Pnd Safeguards l
Technical contact: Michele Burgess, NMSS ,
(301) 415-5868 l E-mail: mlb@nrc. gov l
Attachments:
- 1. List of Recently issued NMSS Information Notices
- 2. List of Recently Issued NRC Information Notices I
1 i
4 Attachment 1 IN 96-53, Supp.1 June 23,1997 Page 1 of 1 LIST OF RECENTLY ISSUED NMSS INFORMATION NOTICES Information Date of Notice No. Subject issuance issued to 4
97-35 Retrofit to Industrial 06/18/97 Allindustrial radiography Nuclear Company (INC) licenen IR100 Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compatibility 97-30 Control of Licensed 06/03/97 All material and fuel Material During Reorgani. cycle licensees zations, Employee-Management Disagreements, and Financial Crises 97-24 Failure of Packing Nuts 05/08/97 All U.S. Nuclear Regulatory on One-Inch Uranium Commission licensees and Hexafluoride Cylinder certificates authorized to Valves handle uranium hexafluoride in 30- and 48-inch diameter cylinders 97-23 Evaluation and Reporting 05/07/97 All fuel cycle conversion, of Fires and Unplanned enrichment, and fabrication Chemical Reaction Events facilities at Fuel Cycle Facilities 97-20 Identification of Certain 04/17/97 Registered users of trans-Uranium Hexafluoride portation packages for Cylinders that do not uranium hexafluoride Comply with ANSI N14.1 Fabrication Standards 97-04 Implementation of a New 02/24/97 All materials, fuel cycle, Constraint on Radioactive and non-power reactor Air Effluents licensees 97-03 Defacing of Labels to Comply 02/20/97 All material licensees with 10 CFR 20.1904(b) involved with disposal of medical waste
Attachment 2 IN 96-53, Supp.1 June 23,1997 Pege 1 of 1 LIST OF RECENTLY ISSUED
. NRC INFORMATION NOTICES Information Date of Notice No. Subject issuance issued to ,
l 97-37 Main '.ansformer Fault 06/20/97 All holders of OLs or cps with Ensuing Oil Spill for nuclear power reactors into Turbine Building 97-36 Unplanned Intakes by 06/20/97 All holders of OLs and cps Worker of Transuranic permits. Alllicensees of Airborne Radioactive of nuclear power reactors Materials and External in the decommissioning Exposure Due to inadequate stage and fuel cycle Control of Work 97-35 Retrofit to Industrial 06/18/97 All industrial radiography Nuclear Company (INC) licensees IR100 Radiography Camera to Correct inconsistency in 10 CFR Part 34 Compatibility 97-34 Deficiencies in Licensee 06/12/97 All holders of OLs or cps Submittals Regarding for test and research Terminology for Radio- reactors logical Emergency Action Levels in Accordance With the New Part 20 97-33 Unanticipated Effect 06/11/97 All holders of OLs or cps of Ventilation System for nuclear power reactors on Tank Level Indica-tions and Engineering Safety Features Actua-tion System Setpoint 95-36, Potential Problems 06/10/97 All holders of OLs or cps Supp.1 with Post-Fire Emer- for nuclear power reactors gency Lighting OL = Operating License CP = Construction Permit
i l
l UNITED STATES
! NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDS WASHINGTON, DC 20555 October 15,1996 NRC INFORMATION NOTICE 96-53: RETROFIT TO AMERSHAM 660 POSILOCK RADIOGRAPHY CAMERA TO CORRECT INCONSISTENCY !N 10 CFR PART 34 COMPATIBILITY Addressees All industrial rMw
- u censees.
Purcose The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice to rnake licensees aware of a scenario where the Amersham model 660 Posilock radiography camera would not pass the horizontal shock test as required by 10 CFR Part 34, and of a retrofit to the Amersham Model 660 Posilock radiography camera to correct that problem, it is expected that recipients will review the information for applicability to their licensed activity. However, suggestions contained in this information notice are not new NRC requirements; therefore, no specific action nor written response is required.
Descriotion of Circumstances J l
Recently, NRC became aware of a scenario where the Amersham Model 660 Posilock l radiography camera would not pass the horizontal shock test as required by 10 CFR Part 34.20, " Performance Requirements for Radiography Equipment." Amersham was l made aware of the test results, and took action to correct the situation.
Discussion When Amersham tested the camera in accordance with ANSI N432-1980 in 1989, the
- target for the horizontal shock test was a point between the two bumpers, directly at the slide lock. This point was chosen by Amersham as the most vulnerable impact site, in 1995, tests performed as part of an independent testing contract revealed that there was a more vulnerable impact site. The contractor's test focused aiming at one of the bumpers. The result was damage to the bumper, causing the bumper to become detached, thereby exposing the lock slide to direct impact. Subsequent impacts then broke the lock slide. There appear to be no significant safety issues, since breaking the lock slide would result in an inability to open the shutter. If the source were in the exposed position at the time of impact, the source could still be returned to the shielded and secured position.
_96100802b7 q
- n a
IN 96-53 October 15,1996 Page 2 of 2 l l
As a result of the test information, Amersham redesigned the bumpers. The rnodified bumpers contain a metal core that distributes the stress of an impact to the end plate.
Amersham states that the camera with the modified bumpers passed the horizontal shock .
. test, where the test was aimed at the bumper, The bumpers remained intact, and although they showed signs of impact, they still protected the lock slide. Amersham states that it sent retrofit kits to all owners, of potentially affected comeras, on record with them. Attachment 1 contains a copy of the retrofit kit letter and bumper replacement instructions. The retrofit will be differentiated by the use of a non Phillips head screw instead of the Phillips head screw currently in use. Cameras with the retrofit would continue to meet the requirements of 10 CFR Part 34.
All affected cameras should be retrofitted as soon as possible. Licensees should contact Amersham to obtain retiofit kits or assistance with retrofit procedures, or to notify Amersham if they have not received their kit. Affected cameras may be checked for completed retrofit during any inspection.
Licensees possessing these cameras should be aware of this issue and take action appropriately.
This information notice requires no specific action nor written response, if you have any qusstions about the information in this notice, please contact the technical contact listed below or the appropriate regional office.
W i k Donald A. Cool, Director Division of Industrial and Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards Tcchnical contact: Michele Burgess, IMA8 (301) 415 5868 Email: mlb5@nrc. gov Attachments:
- 1. Amersham Retrofit Kit Letter and Bumper Replacement Instructions
- 2. List of Recently issued NMSS Information Notices
- 3. List of Recently issued NRC Information Notices I
f
~
Attachtnent 1 IN 96-53 October 15, 1996 Page 1 of 4 SENTINEL Amenham torporatmn aa s..nn \,
l' u r blict. .\14 'lu' rei esl~ 2 22"oo rel soo 22 L i h ;
tas.ni~ l'L12ln Mr. Steven Baggett FAmersham Scaled Source Safety Section Sxtec Ocn:cinment cnd Dev:ces Branch Division of Industrial of Medical Nuclear Safety, NMSS U. S. Nuclear Regulatory Commission Washington, DC 20555 A
.2S.Jehr1TIG 3 A + s 'i V
Dear Mr. Baggett:
ll on 24 July This letter serves to document the findings and actions we discussed en our conference c 1996 concerning the model 660 posilock camera.
i d from you Upon receipt of the results of the Southwest Research Institute l k series did not pass the tests that we we rece i i tion.
on 24 Jun 96, we learned that SwRI report concluded in that the 66 concerned us. Not only had we performed the horizontal shock test These test rewits greatly there have not been any indications that there 1989 with the product passing without dif ficulty, but based standard, and we had j were any prob l ems noted in actual use conoitions. ANSI ishorizontal a performance shock test.
not seen any performance based or actual use problems relating to the i
vulnerable impact site on the d on aiming The retolts of our intemalinvestigation havelh kshown impacts both that there s a mor between the two bumpers directly at the lock slide, in this scenario, the horizonta s oc Until we received bumpers. Under these conditions the device clearly passed the horizontal shock test.
l ble area.
the test results from SwRIin Jun 96, we were unaware of a more vu nera his condition The testing performed by SwRI selected one bumper as the target impact point. Under the single bumper is damaged to a point where it becomes detached, there y to a direct impact. Subsequent impacts then break the slide.
s re that In addition to testing the fragile area identified bywasSwRI, fouad towe tested be more a fragile range of other are the single bumper impact was indeed the most fragile area. No other area than the single bumper impact. breaking i
Through our evaluation, we have determined that there are no e The device failssignificant safe.
n impact safety issue l f the lock shde in this position simply prevents the exposure of the s
e J Attachment 1 8 IN 96-53 October 15, 1996 Page 2 of 4 3
^
in field use conditions to actually result in the lock slide breaking.
While we feel that this is an issue we need to and can resolve quickly, there is no safety significance.
or practical nsk of this f ailure mode in field use conditions.
The corrective action for this is very simple, has been thoroughly tested, and can be easily retrofitted in the field by the customer without any disassembly of the camera. We have f abricated bumpers that will replace the onginal bumpers. These new bumpers have a metal core that distributes the stress of an impact to the end plate. When subjected to the horizontal shock test, the bumpers remain intact, adequately preventing an impact to the lock slide. The retrofst will be differentiated by the use of a non philips head screw instead of the "Philips" head currr ntly in use. We are advising users that upon completion of this upgrade, the onginal certificate we provided stating that the device meets the requirements of 10 CFR Part 34 will still be valid.
We have enclosed a copy of the instructions that will be provided to users for implementing the retrofit.
We will be sendnq out the retrofit kits early next wee' Please let me know if you require any additionalinformation, we greatly appreciate your assistance in quickly t esolving this issue.
Sincerely, 1
1(V S}; M Cathleen Roughan !
Regulatory Affairs Manager cc: W. McDaniel f
~ _-_ ~~ ,
4 Attachment 1 IN 96-53 october is. 1996 Page 3 of 4 l
SENTINEL l
h n pr. m ;;
Dear Valued Customer k th our ohee:n e :,> pm d tJe t ;e highest quaur products end in accordar:ee unh our 1509001J Ceni6ed QA Program. which Im s wionimuous imprmement h
.md sen see m the mJustn . SENTINEL strnes tou ar s c sernee+ as a result of feedback from a range of remurce-es is subsected to a specine, repeated. hoidontal t
SENTINEL nas recently recenedl mformanon k shde will that u hen our noo esentually break Posilo We seriwere con d
shock aimed at one ofh the bumpers on the rear end plate. the o - f the product passed wahout difficulty. In addition, we ave I detailed mvestigauon. bl impact site on the device than we were aware of in The results of our investigation have f significant shown issuethere that as theispotential a more damage vulnera toe the projector our 1989 testeg It is important to note that l
h s situation this is not a sa etyhas never been reported from the field, and prevents source exposure. The device fails safe. Additional y, t iofdamage seen m testin unlikely for an impact m field use conditionsi to rest;lt ll oumers in the type of potentially affected on record pany owns. The retrolit process is To preclude any ffipossibility i of this situation, we are sendmg retrofit k ts te at num ite side of this card. *
-projectors We've enclosed a su c envery simple and is desenbed m the instru th our actions.
We have mformed NRC of tlus situation, and they fully suppon and agree If you should have any questions, please feel free to call me at f(800)81 -
207.
Thank you m advance for your support, 5illMcDaniel Operations Manager I
- r
Attachment 1 SENTINEL IN 96-53 octeer 15. 1998 Page 4 of 4 660 RETROFIT Each kit as components consists follows of: rubber protector assembhes and 2 slotted binder head screws Plea >e install these a ) From the rear plate on your 660 Projector remove and discard the two and Phillips head screws located above and below the locking slide b ) Attach the new rubber protector assemblies with the slotted binder h Please call us at (800) 815 1383, extension 2??, ifyou have any questions.
l Attachment 2 I IN 96 53 October 15,1996 Page 1 of 1 1
LIST OF RECENTLY ISSUED l NMSS INFORMATION NOTICES Date of Information issued to Subject Issuance Notics No.
09/26/96 All U.S. Nuclear Regulatory l
_96 52 Cracked Insertion Rods Commission portable gauge l
on Troxler Model 3400 licensees and vendors Series PcCbio Moisture [J Density Gauges All material licensees l Residual Contamination 09/11/96 96-51 ;
Remaining in Krypton-85 l
Handling System After Venting 08/19/96 All U.S. Nuclear Regulatory 96-47 Recordkeeping Decommis- -
sioning Notifications for Commission licensees
- Disposals of Radioactive Waste by Land Burial i Authorized Under Former 10 CFR 20.304, 20.302, I
and C'urrent 20.2002 06/11/96 All U.S. Nuclear Regulatory Failure of Safety Systems 96:35 Commission irradiator on Self-Shielded Irradia-tors Because of inadequate licensees and vendors i
! Maintenance and Training -l 05/224/96 All material and fuel cycle 96-33 Erroneous Data from Defec-tive Thermocouple Results licensees that monitor tem-perature with thermocouples in a Fire 05/01/96 All material and fuel cycle 96-28 Suggested Guidance Relat-licensees ing to Development and Implementation of Correc-l tive Action l
l I
s.
._ m . _ _ . . _ _ . _ . _. . _ _ - . . . _ . _ . . . _ . _ _ _ . . _ _ _ . _ . _ _ _ . . _ . _ _ .
A 9 Attachment 3 IN 96 53 October 15,1996 Page 1 of 1 LIST OF RECENTLY ISSUED NRC INFORMATION NOTICES l
Information Date of Notice No.- Subject issuance issued to
-10/11/96 All holders of OLs or cps 04, Excessive Cooldown Supp.1 and Depressurization and vendors ' . nuclear l of the Reactor Coolant power reactors l System Following Loss ol Offsite Power i
10/07/96 All holders of OLs or cps 96-40, Deficiencies in for nuclear power reactors Supp.1 Material Dedication and Procurement Practices and in Audits of Vendors 09/26/96 All U.S. Nuclear Regulatory 96-52 Cracked Insertion
' Commission portable gauge Rods on Troxler ' l Model 3400 Series - licensees and vendors Portable Moisture ,
Density Gauges Potentially Sub- 09/16/96 All holders of OLs or cps 92-68, standard Slip-On, for nuclear power reactors Supp.1 Welding Neck, and Blind Flanges l-Residual Contamina- 09/11/96 All material licensees 96-51 tion Remaining in Krypton-85 Handling System After Venting i All holders of OLs and cps
! 96-50 Problems with 09/04/96 Levering-in Devices for nuclear power plants
!~
in Westinghouse Circuit Breakers i
l 1
i
- OL = Operating License -
CP = Construction Permit 1 . . _ . , . - . .
i , ! 4 , : -
N U
C P
WL E E A S A N HR A
L T I R N
Y E F GG T
O OU R
P ,N R
I V D T A
T C
E 2 Y U
S 0 5 C
,E 5O
$ 5M 4
3 0
0 0M
)
I 0
1 S S
I O
N P
E
~
W I U ~
TS NI O.
G d 4
7
~
. _ _ - . . - = . _ _ . - . . . .. . .- . . . - . - . - . . -.
l
=. .
Appendix B i
l h
i l .
i 1
i I
5 issue Date: 03/xx/97 B-1 2880/0qq
~
UN .JSTATES NUCLEAR REGULATORY COMMISSION OFFICE 01: NUCLEAR MATERIAL SAFETY AND SAFEGUARDS WASHINGTON, DC 20555 June 18,1997 NRC INFORMATION NOTICE 97-35: RETROFIT TO INDUSTRIAL NUCLEAR COMPANY (INC) IR100 RADIOGRAPHY CAMERA TO CORRECT INCONSISTENCY IN 10 CFR PART 34 COMPATIBILITY Addresse?3 All industrial radiography licensees.
Purcose The U.S. Nuclear Regulatory Commission (NRC) is issuing this informatior nive to make licensees aware of a scenario where the Industrial Nuclear Company (INC) ModelIR100 Radiography Camera would not pass the horizontal shock test, as required by 10 CFR Part 34, and of a retrofit to the INC Model IR100 radiography camera, to correct that problem, it is expected that recipients will review the information for applicability to their licensed activities, and consider actions, as appropriate, to avoid problems.
However, suggestions contained in this information notice are not NRC requirements; therefore, no specific action nor written response is required.
Descriotion of Circumstances Recently, NRC became aware of a scenario where the INC ModelIR100 radiography camera would not pass the horizontal shock test, as required by 10 CFR Part 34.20,
" Performance Requirements for Radiography Equipment." INC and the State of California evaluated the problem, and INC took action to correct the situation.
Discussion
!NC recently identified the " Safety Latch Plate" on the IR100 radiography camera as a potentially more " fragile area" (as specified in ANSI N432-1980, Paragraph 8.3.2) than the area previously tested, it appeared that if the Safety Latch Plate were struck directly on the front surf ace of the plate (with the source in the safe locked position), the plate could be deformed and deemed inoperable. It also appeared that the plate might be susceptible to damage if struck from the top and side. To ensure that this type of potential damage was not possible, a bumper that would prevent deformation was welded to the back of the Safety Latch Plate, and the outer top edge of the plate was angled at a 45 to 50 degree angle to a depth of approximately 3 mm (0.12 inch). The modified device was tested to ensure compliance with ANSI N432-1980, paragraph 8.2.
When the source is in the locked, stored position, there appeared to be no significant safety issues, since bending of the Safety Latch Plate prevents source crank out.
However, the State of California has stated that if the source was in the exposed position at the time of impact, the source would Hat be able to be returned to the shielded and secured position.
-9706120340
l . .
i IN 97-35 June 18,1997 Page 2 of 2 i
INC has indicated that it will contact all owners of potentially affected cameras, on record with it, to notify them of the retrofit. INC has recommended that users return the cameras to INC for retrofits. INC has indicated that it can also send retrofit kits and instructions to
- users that wish to perform their own retrofits. Attachment 1 contains a copy of the retro-
! fit kit letter and replacement instructions. The retrofit can be differentiated from the i original design by verifying that the top part of the plate has a bumper, that is welded on ,
j the backside of the Safety Latch Plate and which fills a good portion of the space between l
q the Safety Latch Plate and the body of the projector.
- To allow licensees sufficient opportunity to request and install the retrofit, units not ,
1 containing the retrofit will continue to be approved for use through December 31,1997.
s Effective January 1,1998, units not containing the retrofit will no longer be approved for use. Affected cameras may be checked for completed retrofit during any inspectina.
Cameras with the retrofit will be deemed to meet the requirements of 10 CFP % t 04.
All affected cameras should be retrofitted as soon as possible. Licensees should contact 1 I
g INC, or the State of California, to obtain retrofit kits or assistance with retrofit pro- '
cedures, or to report that they have not received their kit. Affected cameras may be checked for completed retrofits during any inspection. l l
This information notice does not require any specific action or written response. If you .
have any questions about the information in this notice, please contact one of the technical contacts listed below or the appropriate regional office.
s ..., ,
/
/
Donald A. Cool, Director Division of Industrial and i Medical Nuclear Safety Office of Nuclear Material Safety and Safeguards Technical contacts: David Wesley Dept. of Health Services State of California (916)445 1884 Michele Burgess, NMSS 301-415-5868 E-mail: mlb@nrc. gov Attachments:
- 1. INC Retrofit Kit Letter and Replacement instructions
- 2. List of Recently Issued NMSS Information Notices
- 3. List of Recently issued NRC Information Notices
-~~ %-----.,
. . Attachment 2 IN 97-35 June 18,1997 Page 1 of 1 LIST OF RECENTLY ISSUED NMSS INFORMATION NOTICES Date of issued to issuance -
- Information Subject Notice No, 06/03/97 All material and fuel cycle licensees Control of Licensed 97-30 Material During Reorgani-zations, Employee-Management Disagreements, and Financial Crises All U.S. Nu !aar Regulatory 05/08/97 Failure of Packing Nuts Commission licensees and 97-24 on One-Inch Uranium certificates authorized to Hexafluorida Cy!inder handle uranium hexafluoride in 30- and 48-inch diameter Valves cylinders All fuel cycle conversion, 05/07/97 enrichment, and f abrication Evaluation and Reporting 97-23 of Fires and Unplanned facilities Chemical Reaction Events at Fuel Cycle Facilities Registered users of trans-04/17/97 portation packages for identification of Certain 97-20 Uranium Hexafluoride uranium hexafluoride Cylinders that do not Comply with ANSI N14.1 Fabric : ion Standards All materials, f uel cycle, O2/24/97 and non-power reactor Implementation of a New 97-04 licensees Constraint on Radioactive Air Effluents All material licensees 02/20/97 involved with disposal of Def acing of Labels to Comply 97-03 with 10 CFR 20.1904(b) medical waste All teletherapy licensees 12/24/96 Undetected Failures that May
- 96 72 Occur During Patient Treat-ments with Teletherapy Devices
r Attachment 3 -
IN 97-35 June 12,1997 !
Page 1 of .1 LIST OF RECENTLY ISSUED NRC INFORMATION NOTICES Information Notice No. Date of Subject issuance issued to 97 34 Deficiencies in Licensee 06/12/97 Submittals Regarding All holders of OLs or cps Terminology for Radio- for test and research logical Emergency Action reactors Levels in Accorriance With the New Part 20 97-33 Unanticipated Effect of Ventilation System 06/11/97 All holders of OLs or cps on Tank Level Indica- for nuclear power reactors tions and Engineering Safety Features Actua-tion System Setpoint 95 36, Potential Problems Supp.I 06/10/97 All holders of OLs or cps with Post-Fire Emer-gency Lighting for nuclear power reactors 97-32 Defective Worm Shaft 06/10/97 All holders of OLs or cps Clutch Gears in Limitorque Motor- for nuclear power reactors Operated Valve Actuators 97 31 Failures of Reactor Coolant Pump Thermal 06/03/97 All holders of OLs or cps Barriers and Check for pressurized-water Valves in Foreign reactor plants Plants 97-30 Control of Licensed 06/03/97 All material and fuel Material During Reorgan-izations, Employee- cycle licensees Management Disagreements, and Financial Crises OL = Operating License CP = Construction Permit
v i Am I I i l W.
af40VSTRIAL NUCLI. AA CO . INC ATTENTION: ALL IR 100 OWNERS / RSOs Industrial Nuclear Company (INC) recently received information k tha plate of the IR 100 Exposure Device would bend difficulty. when the safety la directly on the face. We had performed the horizontal shock test o as required by ANSI N4321980, Section 8.2 and the IR 100 passed wit The IR 100 Exposure Device has been on the market and in use since concemed, however, the safety latch plate bending has never been repott INC initiated an investigation and found that whenever the source wa with the IR 100 locked, the safety latch plate could be h:nt by Please Note:
_Hence. the safety latch ointe bendina ic not a safety issue.
Please return your IR 100 to us for a modified safety latch plate replacem you need a new source. This will insure that the safety latch plate b the future.
Due to the na.ture of this modi 6 cation (disassembling the lock body) ---
t encourage you to return the IR 100 Exposure Device to INC h for the safe replacement. If you decide to return the device for the replacement, pleas modi 0ed safety latch plate with the shipment.
If you can not retum your IR 100 to us, please Source replace mustthe be current saf modified safety latch plate we have enclosed with this notice. Note:Jefore properly stored in a Source Chanac- ions that are enclosed. We would appreciate Please be sure to follow the detailed i.nstru l' your returning the old safety latch plate to us.
INC has notified the California Department of Health Services, Radiologic Hea J
of the potential problem regarding the bending of the safety latch plate an our actions to replace them.
l l
If you have any question, please call Mike Rose, E. W. " Bill" Huddleston o l
l undersigned at 1-800-711-1982. Thank you very much for your cooperation in thi Very truly yours,
' x
.+
O 3
l Tom W. Cuthbertson p i6
' Radiation Safety Officer E,., :
a m
r- :.
January 1997 M ~.1
?
y -,
l Ca OFFICE:
2515 Wilitam* St Saa teanoro CA 9J577 Tc4 g510s 312 67M 68
- Tas ;510i 352 6772 VK OFFICE:
9125 Aerpet Bivo 010 wsien f u 7'06:
'et (?t 3) c.4 7 0532. Li : *t 3s W t 384
______-__-_________________________________-___-_______-_______________________________.--_-___________-_____-__-______s
INSTR UCTIid (~ -
SAFETY LATCH PLA'lu) EXCHANGE
^
source changer. Attach dummy pigtail of the exchange kit to driv ~
device. Lock the device and remove crank assembly from device. Re-insert key and pull (or re-attach operate position). the drive cable) to unlock the device and push the safety latch plate toethe operate MSASSEMI LY OF TifE LOCK (A) Remove drive cable receiver (Retainer).
(1) With a 5/64 allen wrench remove the 3 set screws of the drive cable receive. Items 8 & 9.
(2)
Holding the safety Items 11,12,13, & 15. latch plate in the operate position remove the retainer, spring, slide receiver, a (B) Remove lock cylinder and safety latch plate.
(1) Witti a 3S2 allen wrench remove the screw under the lock cylinder, hem 10.
(2)
With a long 3/32 allen wrench remove the allen screw in the lock body. Item 3. Note: The screw is inside (3) housing, under the lock cylinder and is accessible only from below. The screw (Item 10) must first be remov The safety eylinder latch assembly. hemplate
- 2. is spring loaded. Hold down lightly and with the key in the lock slightly rotated, remo (4) Remove the safety latch sprPg and pin. Items 4,5, & 6.
RFASSEMBLY OF TifE f OCK (A) Install modified safety latch plate, spring and pin.
(1)
Place exposure device on its side so that the exrosure device handle is onInstall the right.
pin, spring and modified safety latch plate in the lock body. Items 4,5, & 6. Note:
plate next to the exposure device body. Safety latch plate must be installed with the added spacer (B) Install lock cylinder in body.
(1)
Lock cylinder must be installed in the unlocked position with hole in bottom of cylinder down to ahgn with installed through bottom oflock body. Item 2.
(2)
Lock cylinder must be properly inserted in lock body in order for cam to engage safety latch platc. Exc '
will misalign hole with allen screw and may inhibit safety latch plate action.
(3) Secure lock cylinder with allen screw. Item 3.
(4)
(C) Install drive cable receiver. Lock cylinder in the unlocked posidon. Test safety latch plate for smooth u (1)
Depress and hold down the safety latch plate (operate position) and insert the slide receiver. Item projecting from the receiver slide must be ahgned so as to enter the small hole inside the lock bod latch plate. Correct rotadon may be verified by observing that the index mark on the face of the receiver is at and that the safety latch plate remains in the operate posidon.
(2) Insert the large spring in the slide receiver. Item 12.
(3)
Fully insert drive cable receiver /rctainer into lock body cavity and rotate until retainer screw holes align wit sides of the lock body (D) Test for proper asse hem IL Insert allen set screw in bottom of lock body to holdItem m bly. retainct.
8.
(1)
Observe that the safety latch plate opening matches the hole through the slide receiver (operate position).
Push drive cable through exposure device and attach dummy pig tail to drive cable.
Pull drive cable with dummy pig tail back (retract) through exposure device. At this point, the safety latch pop up to the latched position. Test for proper action by depressing safety latch plate, push dummy pig tail out an return. With safety latch plate in up posidon and dummy pig tail trapped rotate key to lock posidon. Pull cable rotate key to unlock. Finally, to verify for proper assembly, depression of the safety latch plate to the ope will permit removal of the pig tail through the outlet port of the exposure device.
(2)
Complete insertion of allen screws, Item 8 & 9, described in #7 (above) and lock side screws with special sho Replace screw under the lock cylinder. Item 10.
(E) Test complete system as follows:
(1) Pull back (retract) dummy pig tail.
(2) Safety latch plate will pop up.
~ (3) Push out (expose) . dummy pig tail will not move out of exposure device.
(4)
Rotate cannot key to lock be depressed. position and remove. Dummy pig tail will not move out of exposure device. Safety la (5) Insert key and attempt to rotate. (Do Not Force) Key should not rotate to unkrk position.
(6) 1 Pull turns, back (retract) durnmy pig tail and rotate key to unlock position. Safety latch plate will depress sli t
(7)
(8) Release Rotate key topull lockon dummy position. pig tail, Key should Ley in unlock posidon safety latch plate may be manually depressed t not rotate.
(9) Remove dummy pig tail. Exposure device is now ready for re-loading.
- p p
- f. Safety Latch Plate / Lock Body bragram l
' Kisdified Safety Latch Plate inefnded With Safety f.stch Plate Modifiention Fvchnned Tremt 1 /] _
I.
- 2. AT mbmON ALLIR 100 OWNERS / RSOsINSTRIX'TTUO Safety Latch PlatrJ12xi Body Diagram
! '3.
4..
Modified Safety Latch Plate S.. Dummy Pigtail (Model32)
O -
Items Reautred For Safete f,ntch Plate Frehange O
,1.
Quali5ed and Tratned Indi> idual (RSO) To Make The Exchange w
'2.
Source Removed And Separately Stored (Source Changer) 3.
4.
Items 2.3,4 and 5 Noted Above Allen Wrenches 3S2(long)and 5/64 y
5.
Clean And Organized Ama For lock Body Parts Side %cw Face Wew (Front Side) d L "
~ IR 100 Exoostire De? ice Lock Itody Dinerani .
f.nek Body Parft i i<t n h
- 1. lock Body
- 2. Lock Cylinder
- 3. Lock Set Screw (352)
- 4. Safety Latch Plate (Old - To Be Replaced)
- 5. Spring O -I
- 6. Spring Pin
- 7. Key
- 8. Retainer Set Screw (5/64) $o
- 9. Locking Set Screw (5/64) ,
- 10. Screw (3/32)
~
g 11, Retainer -
O y
- 12. Slide Spring - P 13 Slide Receiver O C side vie * ;>,cc vg;J I14. Drive AssemblyConnector
!15. Dummy Pig Tail
=
0 "
i l
5 _
E
- F ,
i
@ s__a '
] f J ,..__....
g hR w .._ :.-g
. ..1 .
y.: H" o
1 0 r
- ... Q '. ~'
. .t C2"3
@ <@E i
.[
I -
o 80 g ,
U N_nin If any part in need of replacement gr repair, 100 Esposure Device b e s
please contact Industrial Nuclear Company.
Industrial Nuclearf Company strongly the safety latch plate recommends that the IR y Remindet .
grefurnedgC for the regment o
ll ,
ll!!l\ \i ,!ll liiIIit \ll ,
N. . .
U ,
C P WL A E E
N S A A
L HR I
T YO NR F GEU FF OIC TGN I RI A OUT LE PL RB .N AD NU DTS A S CO T TI ENE RA US 2Y T SS
.E 5CES 0
5O
$ 5 3 0 - M 0
0 0M 0I S 1
S I
O N
~
P O
S TIF gET U
, SN P L M
D