Definition and means of maintaining the process vacuum liquid detection interlock systems portion of the PFP safety envelope
The Process Vacuum Liquid Detection interlock systems prevent intrusion of process liquids into the HEPA filters downstream of demisters {number_sign}6 and {number_sign}7 during Process Vacuum System operation. This prevents liquid intrusion into the filters which could cause a criticality. The Safety Envelope (SE) includes the equipment which detects the presence of liquids in the vacuum headers; isolates the filters; shuts down the vacuum pumps; and alarms the condition. The presence of liquid in the HC-4, HC-7, and HC-227S glovebox vacuum traps or a high level of liquid in the 236-Z Tank 50 will isolate these portions of the vacuum system from the main headers. This report identifies the equipment in the SE; operating, maintenance, and surveillance procedures needed to maintain the SE equipment; and rationale for exclusion of some equipment and testing from the SE.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
- DOE Contract Number:
- AC06-96RL13200
- OSTI ID:
- 325069
- Report Number(s):
- WHC-SD-CP-SDD-013-Rev.2; ON: DE98059488; BR: EW7003000; TRN: 97000062
- Resource Relation:
- Other Information: PBD: 2 Jan 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Definition and means of maintaining the process vacuum liquid detection interlock systems portion of the PFP safety envelope
Definition & means of maintaining the process vacuum liquid detection interlock systems portion of the PFP safety envelope