Spallation Neutron Source Accident Terms for Environmental Impact Statement Input

Technical Report · Sat Aug 01 04:00:00 EDT 1998

DOI:https://doi.org/10.2172/3887· OSTI ID:3887

Devore, J R ^[1]; Harrington, R M

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1. ORNL

This report is about accidents with the potential to release radioactive materials into the environment surrounding the Spallation Neutron Source (SNS). As shown in Chap. 2, the inventories of radioactivity at the SNS are dominated by the target facility. Source terms for a wide range of target facility accidents, from anticipated events to worst-case beyond-design-basis events, are provided in Chaps. 3 and 4. The most important criterion applied to these accident source terms is that they should not underestimate potential release. Therefore, conservative methodology was employed for the release estimates. Although the source terms are very conservative, excessive conservatism has been avoided by basing the releases on physical principles. Since it is envisioned that the SNS facility may eventually (after about 10 years) be expanded and modified to support a 4-MW proton beam operational capability, the source terms estimated in this report are applicable to a 4-MW operating proton beam power unless otherwise specified. This is bounding with regard to the 1-MW facility that will be built and operated initially. See further discussion below in Sect. 1.2.

• Research Organization: Oak Ridge National Lab., TN (US); Argonne National Lab., IL (US); Brookhaven National Lab., Upton, NY; Lawrence Berkeley National Lab., CA (US); Lawrence Livermore National Lab., CA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 3887
• Report Number(s): ORNL/M-6575; SNS-1998-00002; SNS_1998_00002
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
43 PARTICLE ACCELERATORS
ENVIRONMENTAL IMPACT STATEMENTS
INVENTORIES
NEUTRON SOURCES
PROTON BEAMS
RADIATION ACCIDENTS
RADIOACTIVE MATERIALS
SOURCE TERMS
SPALLATION
TARGETS