Validation of the YAEC (Yankee Atomic Electric Company) criticality safety methodology

Conference · Fri Jan 01 04:00:00 EST 1988 · Transactions of the American Nuclear Society; (USA)

OSTI ID:5552704

Napolitano, D G; Carpenito, F L; Rashid, P J

The Yankee Atomic Electric Company's (YEAC's) criticality safety methodology has evolved over the years to analyze high-density spent fuel rack designs, new fuel vault optimum moderation, burnup credit, pin consolidation, storage rack sensitivities, and large spent fuel rack arrays. The present methodology has three calculational paths: NITAWL-S/ KENO V.a Monte Carlo, CASMO-3 integral transport, and CASMO-3/CHART-2/PDQ-7 diffusion theory analysis. These calculational paths have been validated by caparison to 21 Babock Wilcox (B W) fuel storage criticals. These criticals covered a range of fuel storage conditions in which criticality was maintained by a combination of water height, soluble boron, fixed poison, and array spacing. Statistical analysis of the 21 calculated k{sub eff}'s gives a method bias and 95/95 method uncertainty for each path.

• OSTI ID: 5552704
• Report Number(s): CONF-880601--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

050900 -- Nuclear Fuels-- Transport
Handling
& Storage
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
22 GENERAL STUDIES OF NUCLEAR REACTORS
220300 -- Nuclear Reactor Technology-- Fuel Elements
42 ENGINEERING
420203* -- Engineering-- Handling Equipment & Procedures
BORON
BURNUP
C CODES
COMPUTER CODES
CRITICALITY
ELEMENTS
FUEL RACKS
HYDROGEN COMPOUNDS
K CODES
MECHANICAL STRUCTURES
MODERATORS
MULTIPLICATION FACTORS
N CODES
NUCLEAR DATA COLLECTIONS
OXYGEN COMPOUNDS
PROBABILITY
SAFETY
SEMIMETALS
SENSITIVITY
SPENT FUEL STORAGE
STORAGE
SUPPORTS
WATER