HEPA Filter Differential Pressure Fan Interlock System Functional Requirements and Technical Design Criteria

Technical Report · Thu May 11 00:00:00 EDT 2000

DOI:https://doi.org/10.2172/803661· OSTI ID:803661

TUCK, J A

Double-shell tanks (DSTs) and Double Contained Receiver Tanks (DCRTs) are actively ventilated, along with certain single-shell tanks (SSTs) and other RPP facilities. The exhaust air stream on a typical primary ventilation system is drawn through two stages of high-efficiency particulate air (HEPA) filtration to ensure confinement of airborne radioactive materials. Active ventilation exhaust stacks require a stack CAM interlock to detect releases from postulated accidents, and to shut down the exhaust fan when high radiation levels are detected in the stack airstream. The stack CAM interlock is credited as a mitigating control to stop continued unfiltered radiological and toxicological discharges from the stack, which may result from an accident involving failure of a HEPA filter. This document defines the initial technical design baseline for a HEPA filter AP fan interlock system.

• Research Organization: CH2M Hill Hanford Group, Inc., Richland, WA (United States)
• Sponsoring Organization: ENVIRONMENTAL MANAGEMENT (US)
• DOE Contract Number: AC27-99RL14047
• OSTI ID: 803661
• Report Number(s): RPP-5977, Rev.0; EDT-626597; TRN: US0301602
• Resource Relation: Other Information: PBD: 11 May 2000
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BLOWERS
DESIGN
FILTRATION
INTERLOCKS
PARTICULATES
RADIOACTIVE AEROSOLS
VENTILATION
VENTILATION SYSTEMS
AIR FILTERS
STORAGE FACILITIES
EXHAUST SYSTEMS
AIR POLLUTION MONITORS