ML20137Z536
| ML20137Z536 | |
| Person / Time | |
|---|---|
| Site: | 07109073 |
| Issue date: | 12/03/1985 |
| From: | Odegaarden R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| NUDOCS 8512110327 | |
| Download: ML20137Z536 (2) | |
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FCTC:3HO DEC 0 3 m A.Mac6En 71-9073 gg MEMORANDUM'FOR:
The Files FR0ft:
Richard H. Odegaarden, FCTC, NHSS
SUBJECT:
SUfMARY OF fiEETING WITil mfMERS OF PACKAGES CERTIFIED BY CERTIFICATE OF COMPLIAMCE t10. 9073 Attendees NUS NUPAC' Westinghouse-Hf ttman fluclear H. ft. Hipsher Harty Carson Bryan Roy R. F. Sacramo Charles Tenus David Wozniak G. J. Antonucci R. T. Haelsig
.NRC C. E. MacDonald R. H. Odegaarden C. R. Chappell li. W. Lee Introduction I
A meeting was held at Silver Spring, l'aryland, on f!avenber 22, 1985, to discuss NRC staff plans to linit the contents of the ftodel Hos. OH-142 Series and NUS10-135 packages.
Discussion On December 31, 1935 Certificate of Compliance ?!o. 9073 for the t'odel No.- OH-142 Series shipping containers will be amended to authorize contents of low specific activity naterial only. The package identification number will.also be changed to USA /9073/A at that time.
8512110327 851203 PDR ADOCK 07109073 C
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For this package, the fluclear Packaging. Inc. (MUPAC) safety analysis of hypothetical accident conditions is based upon the ultinate (hreaking) strength of the ratchet binders. The staff recently obtained nanufacturer's literature for these devices. The literature for ratchet binders states:
l "Ilreaking strengths are approximate and should be used as reference only. Good comon practice dictates use of a safety factor suitable to the application; usually no less than 3 to 1."
The unsuitability of basing ratchet hinder designs on ultimate strength is further exenplified by the AISC code which specifies a safety factor of 5 to 1 for simple turnbuckles.
In addition, the ?fuclear Packaging, Inc. safety analysis of the ratchet l
hinders does not address the following:
1.
The nagnitude of the clanping force provided by ratchet binders.
(llith bolts, the clanpinq force can he controlled by the anount of toroue applied to the bolt).
2.
The extent to which the clanping force could vary under routine operations due to tenperature changes, wear of the ratchet hinder conponents, vibration, fatigue, etc.
3.
The effectiveness of ratchet binders for resisting lateral loads irposed by cover plates and inpact limiters under side and oblique angle impacts.
4.
The adequacy of using ratchet hinders for shipping container closures as demonstrated by actual physical testing to the hypothetical accident conditions in 10 CFR Part 71.
Based upon the foregoing and in tbc absence of conclusive safety infornation, l
the authorized contents for the !!odel !!o. O!!-142 packaging will be l
limited as indicated above so that the ratchet hinders need not he effective under hypothetical accident conditions.
l f'UPAC plans to subnit a consolidated application denonstratinq the l'odel i
fio. O!!-142 t! KIP. package, which has lid bolts rather than ratchet hinders, rects the requirenents of Part 71 hased on yield naterial values for the bolts.
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NRC PDR Mtg Attendees Richard 4. Odeqaarden, Pro.icct ?!anager GBeveridge Transportation Certification Cranch FCTC Mtg File Book Division of Fuel Cycle and NMSS R/F t'aterial Safety, MMSS FCTC R/F A
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