Critical monitoring

Analysis parameters should be established to monitor the key indices of the compressor s dynamics and failure modes. These indices should include bearings, gear mesh, rotor passing frequencies, and mnning speed. However, because of its sensitivity to process instability and the normal tendency to thmst, the most critical monitoring parameter is axial movement of the male and female rotors. 

The third (3x) harmonic of running speed is a critical monitoring parameter. Most, if not all, generators tend to move in the axial plane as part of their normal dynamics. Increases in axial movement, which appear in the third harmonic, are early indicators of problems. 

Decide on the critical monitoring parameters and the test methods to measure them. 

Section Val. 1700 provides 14 exclusive procedures describing critical monitoring operations to ensure sterility assurance. 

The FAAE have proposed the establishment of a criticality monitoring system for the DSU s. Whilst this has been accepted in principle by the UK, the actual specification of the equipment has yet to be defined. This in turns requires an understanding of the potential criticality events, and the physical phenomena which will result from these. Once this is determined the Task will proceed to determining the optimum monitoring system. 

The principal monitoring parameter for severe TBI patients within the intensive care environment is intracranial pressure (ICP). Cerebral perfusion pressure (CPP) is also a critical monitoring parameter and should be maintained at greater than 60 mm Hg (>40 mm Hg in pediatric patients) through... 

Control and automation Biosensors can be integrated with on-line process monitoring schemes to provide real-time information about multiple parameters at each production step or at multiple time points during a process, enabling better control and automation of many industrial and critical monitoring facilities. 

Radiation health monitoring equipment Is positioned around the reactor building and associated areas to monitor radiation levels and control access to these areas. The health monitors consist of RXO RGX-2 emd Model V Beckman plcoammeters and gamma sensitive Ion chambers. Depending on the location and the purpose for vhlch the monitor Is used (either health or criticality monitoring) the Instruments are set to trip and alarm at 30 mr to 30OO mr. 

Are criticality monitors present YesD No 0 Ifyes, describe type, quantity, and location ... 

NIMS including remote alarms) provide criticality monitoring to warn personnd of a criticality in the Assembly Area and Disassembly Area. 

In the summer of 1980, SHEBA, a critical assembly intended as a facility for evaluation of criticality monitors. 

Area radiation monitors are provided to supplement the persoimel and area radiation survey of the radiation protection program as described in Section 11.5 of the EDCD (Reference 12.1). During refuelling operations in containment and fuel handling area, criticality monitoring functions are performed by the area radiation monitors. A local readout, audible and visual alarms are provided internal to each area to be monitored. Visual alarms are provided outside each monitored area. Indication and alarm are also provided in the main control room. 

Sub-critical monitoring In operation during all rod pulls if not available, PC In operation with specified sensitivity. 

Sub-Critical Monitor - An electronic system for monitoring the neutron flux level while the Keff is less than unity. The system consists of a fission chamber in the active zone of the reactor connected to an amplifier-scaler, etc. 

B, FAST PERIOD TRIP LOGIC SOB-CRITICAL MONITORING INSTRUMENTATION... 

Material condition waikdowns shall be performed on the following (1) Critical Monitoring System, (2) Supplementary Safety System, (3)... 

SRTB-89-281 (Reference 14) provides adequate procedural guidance for conducting material condition waikdowns of selected systems. The selected systems specified in SRTB-89-281 are (1) Critical Monitoring System, (2) Supplementary Safety System, (3) Airborne Activity Confinement System, (4) Cooling Water System, and (5) Process Water System. 

---