Wind tunnel testing to predict control room atmospheric dispersion factors

Conference · Fri Jan 01 04:00:00 EST 1993 · Transactions of the American Nuclear Society; (United States)

OSTI ID:6844075

Holmquist, L J; Harden, P A ^[1]; Muraida, J E ^[2]

---

1. Consumer Power Co., Covert, MI (United States)
2. Sargent Lundy, Chicago, IL (United States)

Recent concerns at Palisades about control room habitability in the event of a loss-of-coolant accident have led to an extensive effort to increase control room habitability margin. The heating, ventilating and air-conditioning (HVAC) system servicing the control room has the potential for unfiltered in-leakage through its normal outside air intake louvered isolation dampers during emergency mode. The current limiting control room habitability analysis allows for 1.2 x 10[sup [minus]2] m[sup 3]/s (25 ft[sup 3]/min) unfiltered in-leakage into the control room envelope. This leakage value was not thought to be achievable with the existing as-built configuration. Repairing the system was considered as a potential solution; however, this would be costly and could negatively affect plant operation. In addition, the system would still be required to meet the low specified unfiltered in-leakage. A second approach to this problem was to determine the atmospheric dispersion factors (x/Q's) through a wind tunnel test using a scale model of Palisades. The results of the wind tunnel testing could yield more realistic x/Q's for control room habitability than previously employed methods. Palisades selected the wind tunnel study option based on its ease of implementation, realistic results, and low cost. More importantly, the results of the study could increase the allowable unfiltered in-leakage.

• OSTI ID: 6844075
• Report Number(s): CONF-931160--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 69
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
22 GENERAL STUDIES OF NUCLEAR REACTORS
220502 -- Nuclear Reactor Technology-- Environmental Aspects-- Radioactive Effluents
220900* -- Nuclear Reactor Technology-- Reactor Safety
AC SYSTEMS
ACCIDENTS
COMPARATIVE EVALUATIONS
CONTROL ROOMS
DISPERSIONS
ENERGY SYSTEMS
ENRICHED URANIUM REACTORS
EVALUATION
HVAC SYSTEMS
LOSS OF COOLANT
PALISADES-1 REACTOR
POWER REACTORS
POWER SYSTEMS
PWR TYPE REACTORS
RADIATION TRANSPORT
REACTOR ACCIDENTS
REACTOR SAFETY
REACTORS
SAFETY
TESTING
THERMAL REACTORS
TUNNELS
UNDERGROUND FACILITIES
WATER COOLED REACTORS
WATER MODERATED REACTORS
WIND TUNNELS