RPM Functional Compliance Test

An example of a unique file name is US_PortofEntry_FCT_Lane1_05132016.

Complete the General Information section to specifically identify the RPM (see following image)

Source information is commonly listed directly on the label of radioactive source; however, this may also be obtained from the Certificate of Calibration that is provided with all radioactive sources.

Gamma and neutron check source activities have a significant impact on the results obtained during RPM functional testing. Entering accurate source information into the datasheet is crucial to successful completion of this procedure. 

Source information is commonly listed directly on the label of the radioactive source; however, this may also be obtained from the Certificate of Calibration that is provided with all radioactive sources. 

Gamma and neutron check source activities have a significant impact on the results obtained during RPM functional testing. Entering accurate source information into the datasheet is crucial to successful completion of this procedure. 

Note: The neutron activtiy is converted to neutrons per second (n/s or n/sec), which is another common measure of neutron activity. 

Current Cf-252 source activity must be between 2,000 and 20,000 n/s to perform this procedure. 

Upon arrival, brief system operators on expected work, duration, anticipated alarms, and fault indications before starting work. 

Operators should expect numerous fault indications and alarms during procedure. 

Use orange safety (traffic control) cones or equivalent per site-specific safety practices. 

Locate Ethernet connector on top of SC-770 controller. Press release button on back of connector. Pull connector. 

For vehicle monitor, disconnect both break-beam sensor receivers (usually*) located in the control pillar, and then disconnect 12 Vdc to the ultrasonic sensor in the auxiliary pillar.

For pedestrian monitor, place a piece of black tape over sensor of infrared curtain (SPY-2), or simply stand clear of occupancy sensor when door is opened. Disabling the sensors will prevent the RPM from sensing an occupied condition and going into fast-count mode when the RPM doors are opened or a maintenance technician is working in and around the pillars.

*In some installations, break-beam sensor receivers have been moved to the auxiliary pillar. It is important that receivers be disconnected; if the transmitters are disconnected a constant state of occupancy will result.

Move LD-260 switch to ON position. The LED PWR ON will illuminate.

RPM will perform a power on self-test (POST) and collect a background radiation measurement.

Enter Program Mode by pressing "0."

Enter the password 1234 and press "#" (enter).

Navigation of parameter settings can be found in the Vehicle and Pedestrian Monitor VM-250AGN/PM-700AGN Operations & Service Manual.

If parameter settings do not match currently approved settings from LANL database, set to match. 

Variable values include parameters such as N*Sigma and Alpha value.

Press "#" button until the SC-770 displays the main menu.

From SC-770 main programming menu, press

1. GAMMA
   2. FUNCTIONS
      3. SHOW COUNTS

Stand clear of all gamma detectors, watch displayed count rate for each channel on SC-770, record average background count rate for each channel in correct cells on FCT datasheet. 

The source must be held firmly against the detector with a low-density tool such as wooden dowel or pencil. 

Stand clear of all gamma detectors, watch displayed count rate for each channel on SC-770, record average Co-57 count rate for each channel in correct cells on FCT datasheet. 

Press "#" button until the SC-770 displays the main menu.

Record 1 counts per second (cps) for each neutron tube installed on each channel. 

• Rail monitor (RM) (4 tubes per detector) = 4 cps
• Vehicle monitor (VM)/pedestrian monitor (PM) (2 tubes per detector) = 2 cps
• VM/PM (1 tube per detector) = 1 cps

From SC-770 main programming menu, press

2. NEUTRON
   2. FUNCTIONS
      1. SHOW COUNTS

It is acceptable to use adhesive tape for this step

Stand clear of all neutron detectors, watch displayed count rate for each channel on SC-770, record average Cf-252 count rate for each channel in correct cells on FCT datasheet. 

Press "#" until SC-770 exits programming mode and return to normal operating mode. 

Insert Ethernet connector at top of SC-770 module. Connector will audibly "click" when seated properly. 

Perform procedure DET-RPM-RAP‐RM03 RPM Operational Testing.

Verify all faults and alarms indicate properly at the RPM if personnel and communication with the CAS are available. 
Verify the faults and alarms are displayed on the CAS workstation at this time as well.

Place a check in each box on the FCT to indicate that each fault and alarm was successful (image below).
 

Record observations, times, and results for the maintenance report.

As specified by management or contractual obligations.