Equipment Failure Procedure

SA-24 Sampling System 10/22/62

A. Fission Product Monitor Becomes Inoperative

• 1. Isolate the monitor by closing the isolation valves. Tag out the valves and the instrument in the main control room.
• 2. Monitor the activity by using the liquid samples taken.
• 3. Make the necessary repairs to the monitor.

B. Continuous Flow Cannot Be Maintained Through First Or Second Loops

NOTE: This situation may exist where a small leak, but not a serious leak develops, or for a similar reason. Also, the leak must be such that does not create a radiation hazard.

• 1. Isolate the loop and tag out the isolation valves.
• 2. When a sample is desired, operate the loop only long enough to purge the loop and to obtain the sample for analysis. Also, observe the readings of the instruments on the loop (pH and conductivity on first loop and conductivity on second loop).
• 3. Increase the frequency at which samples are taken and analyzed.
• 4. Make the necessary repairs on the loop.

C. Inability to Return Flow From First Loop to Ion Exchangers Or Return Flow From Second Loop to Buffer Seal Tank

• 1. Isolate the loop and tag out the isolation valves.
• 2. When a sample is desired, purge the loop into the sink. Observe the readings of the conductivity indicator during the purging.

  NOTE: Draining the water into the sample sink may create a radiation hazard. Established Health Physics procedure shall be used

• 3. Increase the frequency at which samples are taken and analyzed.
• 4. Make the necessary repairs on the return line.

D. Radiation Monitor Becomes Inoperative

• 1. Isolate the monitor and tag out the isolation valves and instrument in the main console.
• 2. Monitor the activity by using liquid samples taken.
• 3. Make the necessary repairs to the monitor.

E. Conductivity Instrument In First or Second Loop or pH Instrument in First Loop Become Inoperative

• 1. In the case of the pH meter, open the bypass valve and close the two isolation valves. Tag out the instrument and isolation valves.
• 2. In the case of the conductivity meter, tag out the instrument.
• 3. Monitor the conductivity or pH by using the liquid samples taken.
• 4. Make the necessary repairs.

F. Inability To Obtain Samples From the Equipment Drain and Waste Collection Tanks.

1. Check that the two diaphragm isolation valves are closed and take out the pushbuttons.
• 2. Unless the water quality of water in the "PS water" Waste Storage Tank has been determined previously to this period, its contents should only be used for emergency makeup or emergency cooldown of the primary system.
• 3. IF this situation exists when the contents of the waste tanks require "off-ship" disposal, install a temporary sample line on the line to the disposal facility and take samples as the tanks are being pumped out.
• 4. Make the necessary repairs.

G. Loss of Ventilation For Sink Hood

NOTE: This situation may cause an increase in radiation hazards when working in the sample sink.

• 1. Close hood door and notify Health Physics. Follow the rules established for the situation.