NFR TRIGA package design review report

Abstract

August 24. 1994 c WHC-5 D-TP-0 RR-0 03 Rev. 0-I pR1A RFVIFW I IST e Design cask per ASME B&PV Code, Section Vlll or 111, as required by NRC Reguiatory Guides. (4.2) The NRF TRIGA Cask classification by the Packaging Review Guide and NUREGlCR3854 is a Category 111 package (7 A2's). The PDC required the design and analysis per ASME B&PV Code, Section VlI1, based on this category. Category 111 requires, as a minimum, ASME B&PV Code, Section V111, Division I , for fabrication and Division 2 for design and analysis. ASME B&PV Code, Section VI11 and Section 111, were used for the design and analysis of this cask. AI1 materials (pipeltubing, cap screws, lead, and plate) are either ASME or ASTM materials. All welds shall be sufficiently rounded and smooth to enable easy decontamination. (4.2.2) All welds shall be rounded or machined fiush. The abiiity to decontaminate was kept in mind during t h e design. 2-43 PDC CRITERIA REVIEW LIST (con't) Inspect all welds per t h e ASME requirements. (4.2.2) AI1 containment boundary welds can be radiographed and all other welds can be inspected as required by ASME B&PV code Section V111. The inner container shall be less than 16-in. in diameter and the outer container shall be less than 30-in. (4.2.3) The inner container OD is 10.5 in. and the outer container OD is I 6 in. c WHC-SD-TP-DRR-003 Rev. 0 August 24, 1994 PDC CRITERIA REVIEW LIST (con'tl AI1 cask components shall be of materials that assure that there will be no significant chemical, galvanic, or other reaction among The packaging components or between packaging components and contents. (5.1 A.2) a All cask components are stainless steel, lnconel, or coated to prevent chemical, gaivanic or other reactions. Criticality control shall be such that the two casks transported shall have a K, < 0.95 f WHC-SD-TP-DRR-003 Rev. 0 August 24. 1994 c described above) seal. 12 ASTM F-837, Type 410 cap screws, t o a torque specification o f a t l e a s t that necessary t o properly seat the metallic spring-energized seal. The 1 id assembly i s secured t o the cask vessel with 4. 2 ACCEPTANCE OF PACKAGING FOR USAGE 4.2.1 New Packaging used t o transport radioactive materials. performed within 12 months prior t o shipment o f radioactive materials. 4.2.1.1 Acceptance Requirements. The new NRF TRIGA Packagings shall be inspected p r i o r t o f i r s t use a s described in Section 4.2.1.2. Each inspection shall be documented as stated in Section 4.2.1.4. The inspections shall be performed t o ensure t h a t the packaging has maintained the original fabricated conf i gurat i o n .

A fast re‐sampling method for using reliability ratings of sightings with extinction‐date estimators

“…Although many EDE methods have been proposed in the literature, few have been available to use “off the shelf,” leaving researchers little choice but to write bespoke scripts (Lee ). This situation has improved recently, with the development of the R packages sExtinct (Clements ) for running various EDEs (e.g., Robson and Whitlock , Strauss and Sadler , Solow , Roberts and Solow , McInerny et al. ) and spatExtinct (Carlson et al.…”

“…Although many EDE methods have been proposed in the literature, few have been available to use "off the shelf," leaving researchers little choice but to write bespoke scripts (Lee 2014). This situation has improved recently, with the development of the R packages sExtinct (Clements 2013) for running various EDEs (e.g., Robson and Whitlock 1964, Strauss and Sadler 1989, Solow 1993. Estimated year of extinction, based on the Solow (1993) equation ( S93) and the Roberts and Solow (2003) Notes: The top two rows show "Lazarus" species that were thought extinct and then subsequently rediscovered (NP, Night Parrot; SB, Noisy Scrub Bird).…”

“…I. Jari c is sponsored by the J. E. Purkyn e Fellowship of the Academy of Sciences of the Czech Republic and funding from the Alexander von Humboldt Foundation. The OLE function script was derived from Clements (2013). We thank two anonymous referees for their critical comments and suggestions, and Eli Holmes for her thorough and incisive comments, which substantially improved the final paper.…”