ML20148D530
| ML20148D530 | |
| Person / Time | |
|---|---|
| Issue date: | 05/06/1997 |
| From: | Hosey C NRC |
| To: | Bykoski L NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20147J307 | List: |
| References | |
| REF-WM-3 NUDOCS 9705300269 | |
| Download: ML20148D530 (2) | |
Text
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l From Charles Hosey l i
. To: TWD2.TWP7. LMB 1 l Date 5/6/97 ll:44am Subject FINANCIAL ASSURANCE RULE MAKING FOR TELETHERAPY LICENSEES l
i We have reviewed the Rulemaking plan for amendments to 10 CFR 30 and 35 -
k financial assuragnce for teletherapy and krypton 85 and have no comments. The j plan looks good.
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b 9705300269 PDR 970521 WASTE WM-3 PDR
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- NOTE FOR
- Dr. Louis Bykowski, Project Officer, Low-Level Waste and Decommissioning j Projects Branch, NMSS i
4 j FROM: Cassandra Frazier, Acting Branch Chief, Materials Licensing Branch, Region i Ill i
SUBJECT:
REQUEST FOR REGIONAL REVIEW AND CONCURRENCE ON A I RULEMAKING PLAN FOR AMENDMENTS TO 10 CFR 30 AND 35: )
j FINANCIAL ASSURANCE FOR TELETHERAPY AND KRYPTON-85 LICENSEES l As requested in memorandum dated April 24,1997, we have reviewed the proposed amendments that would: 1) Allow teletherapy licensees a period of time for source i exchange during which they could exceed specified possession limits without having to
, provide financial assurance and 2) remove Kr-85 as a radionuclide requiring financial
- assurance by licensees who possess it and concus with the contents. Ritt believes that since exemptions are currently being granted for teletherapy source exchanges and the use l-of Krypton-85 that rulemaking is necessary to eliminate the need for NRC to expend
' further resources on processing these exemrtions on a case-by-case basis.
- If you have any questions concerning the above, please contact Cassandra Frazier (630) i 829-9830. l d
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/dSHING N :C ::555 Septemcer '996 NRC INFORMATION NOTIC196-51. RESICUAL CONTAMINATION REMAINING IN KRYPTON-85 HANDLING SYSTEM AFTER VENTING Addressees All material licensees.
Purpose The U.S Nuclear Regulatory Commission is issuing this information notice to make licensees aware of a possible contaminatior problem in krypton-85 (Kr-85) handling systems. It is expected that recipients will review the information for applican!lity to their facilities, to ensure that this information is considered when decommissioning one of these systems. However, suggestions contained in this information notice are not NRC requirements; therefore, no specific action nor wntten response is required.
Description of Circumstances Recently, NRC was informed of several cases where a licensee found residual contamination remaining in some components of Kr-85 handling systems after the standard decommissioning process. Although these incidents only involved Kr-85, the inherent concems extend to all gas handling systams that subject a radioactive gas to vacuum / pressure c'jcling.
The current process for cleaning these systems during decommissioning is to flush and vent them until the readings from the exhausted air are below release limits. The readings on the outside of the components of the system a e also checked to make sure that they are below acceptable limits.
During cleaning and decommissioning of some of these systems, it has been reported that a vamish-like residue has been found on the inside of some of the system components (i.e.,
storage tank and the compressors). The residue is probably the result of the oils and dust in the system plating on the inside of the components through the repeated vacuum and pressure cycles. This residue is not removed by the flushing process currently used to clean the systems. It has been reported that several of the commonly used solvents have been tried, but that the residue was not easily removed. The residue can be removed by exposing the intemal surfaces of the components and scraping the residue. Residues containing up to 29.6 gigabecquerels (800 millicuries) have been reported. Due to the low levels of gamma radiation emitted by Kr-85 and the robust construction of the air storage tank and other components, the presence of the residue is not detectable by measurements of the outside of the components.
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iN 96-51 l l
sectemcer '996 1 3 Dage 2 Of 2 I
i l 4 Discussion i
- There is a concern that systems released as ' cleaned' under the current decommissioning e procedures may still contain the residue and be released into the scrap stream for later reuse, in particular,. there is a concern that the components could be later cut up, exposing the Kr-85 residue or that the storage tank may be reused as a tank or pressurization ,
chamber. I I
Licensees decommissioning or receiving these systems, or components from these systems, should be aware of the potential for residual contamination, and take action appropriately, This information notice requires no specific action r untten response. If you have any questions about the information in this notice, plesse contact the technical contact listed below or the appropriate regional office.
'7/htbi S' ,
Donald A. Cool, Director Division of Industrial and i Medical Nuclear Safety l Office of Nuclear Material Safety and Safeguards Technical contact: Michele Burgess, NMSS (301) 415-5868 Email: mtb5@nrc. gov l
Attachments:
- 1. List of Recently issued NMSS Information Notices
- 2. List of Recently issued NRC Information Notices
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l j information Da:e cf Subject issuance issued to l . Notice No.
08/19/96 All U.S. Nuclear Regulatory 96-47 Recordkeeping, Decommis-sioning Notifications for Comm:ssion licensees Disposals of Radioactive Waste by Land Bunal Authorized Under Former
.10 CFR 20.304, 20.302, and Current 20.2002 Failure of Safety Systems 06/11/96 All U.S. Nuclear Regulatory 96-35 on Self-Shielded irradia- Commission irradiator tors Because of inadequate licensees and vendors Maintenance and Training 05/224/96 All material and fuel cycle 96-33 Erroneous Data from Defec-tive Thermocouple Results licensees that monitor tem-in a Fire perature with thermocouples 05/01/96 All material and fuel cycle 96-28 Suggested Guidance Relat-ing to Development and licensees ,
Imolementation of Correc-tive Action Safety Concems Related 04/10/96 All NRC Medical Licensees 9S-21 authorized to use brachy-to the Design of the Door therapy sources in high-Interlock Circuit on '
Nucletron High-Dose Rate and pulsed-dose-rate remote and Pulsed Dose Rate Remote Afterloading Brachy-therapy Devices 04/04/96 All industrial radiography 96-20 Demonstration of Associ-licensees and radiography ated Equipment Compliance equipment manufacturers with 10 CFR 34.20 Compliance With 10 CFR 03/25/96 All material licensees 96-18 authorized to possess and Part 20 for Airbome Thorium use thorium in unsealed form Incident Reporting 01/10/96 All Radiography Licensees 96-04 Requirements for and Manufacturers of Radiography Equipment Radiography Licensees
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Information Da:e c' Notice No. Subject issuance issued to 09/04/96 Aff holders of OLs and cps 96-50 Problems with i Levenng-In Devices for nuclear power plants i in Westinghouse Circuit Breakers l
Thermally induced 08/20/96 All holders of OLs or cps J l 96-49 pressurization of for nuclear power reactors of Nuclear Power
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J facil.ty Piping 1
Motor-Operated Valve 08/21/96 All holders of OLs or cps l 9628 Performance issues for nuclear power reactors j Recordkeeping, Decommis. 08/19/96 All U.S. Nuclear Regulatory 96-47 i sioning Notifications for Commission licensees i Disposals of Radioactive Waste by Land Bunal i Authonzed Under Former 10 CFR 20.304,20.302, l
and Current 20.2002 1
Zinc Plating of Hardened 08/12/96 All holders of OLs or cps i 9646 for nuclear power reactors Metal Parts and Removal of Protective Coatings l s
- in Refurbished Circuit 1 j Breakers 8/12/96 All holders of OLs or cps j 9645 Potential Common-Mode Post-Accident Failure of for nuclear power reactors i
! Containment Coolers 8/05/96 All holders of OLs or cps j 9644 Failure of Reactor Trip Breaker from Cracking for nuclear power reactors 1
- of Phenotic Material in secondary contact assembly 08/02/96 All holders of OLs or cps 9643 Failures of General ElecMc Magne-Blast for nuclear power reactors Circuit Breakers JL = Operating License CP = Construction Permit
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DATE RECEIVED: 04/25/97 ORIGINAL DUE DT: 05/15/97 CONTROL NO: 9700191 ,,
DIVISION DATE: D5/-15797 Y ;- )
DOC DT: 04/24/ 7 p/
FROM: TIME: COMP DT: / /j
] DAVID L. MORRISON lll
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RES C [, y /[pl[Lph TO: h vilu.bi, A f
- Paperiello, et al ('l, I
i FOR SIGNATURE OF : ** BLUE ** SECY NO: k((L.,
2 ASSIGNED TO: CONTACT:
l DWM l i
) DESC: ROUTING:
l Memo to Paperiello, et al, from Morrison, RES Paperiello re: OFFICE REVIEW AND CONCURRENCE ON RULEMAKING Knappl PLAN FOR AMENDMENTS TO 10 CFR PARTS 30 AND 35 -- Linehan FINANCIAL ASSURANCE FOR TELETHERAPY AND KR"PTON- Poland
- 85 LICENSEES 4
SPECIAL INSTRUCTIONS OR REMARKS:
DWM - work with other divisions as required to j_ prepare.and provide response to RES by 5/15/97 i ,
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