Nano-strip Tank Change
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| About this Process | |
|---|---|
| Process Details | |
| Equipment | Nano-strip Tank Change |
| Technology | [[]] |
| Chemicals Used | Nano-strip |
| Authored By | Katharine Beach |
This is the procedure for changing Nano-Strip tank in the LNF. This applies to the Nano-Strip tanks in Acid 02, Acid 12, and Mask 13. This should only be done after you have checked the log book and verified the solution is >10days old or have used it and obtained unsatisfactory results.
It is important to only drain 1/2 the solution and then wait 20 minutes before you finish draining the solution. Nano-stip is so acidic that a full tank will overwhelm the AWN (Acid waste neutralization) system and cause out of compliance water to be released to the city water system.
Procedure
- Reserve Bench
- Activate Bench
- Turn Bench on
- Log tank change
- Acid Bench 02 and Acid Bench 12
- Turn on Tank Control
- Open the Drain (press drain button twice). The first press it will beep 4 times and the drain light will flash. The second press it will beep once and the drain light will become solid.
- Watch as the tank drains. When it is 1/2 empty close the drain (press the drain button once)
- Dumping the entire tank at once will cause the Acid Waste Neutralization system to become overwhelmed
- Wait 20 minutes.
- Open the Drain (press drain button twice)
- Fill tank with water
- Drain water
- Repeat fill tank with water
- Repeat drain water
- Fill tank with Nano-strip until Low Level Alarm turns off
- Pour very slowly to avoid splashing
- Rinse nano-strip bottle 3x or use bench bottle wash
- Label bottle rinsed and dispose of in bottle recycle bin in 1480C
- Mask Bench 13
- Insert 1 aspirator into tank and turn on
- When tank is 1/2 empty remove aspirator and place in QDR tank
- Wait 20 minutes
- Return aspirator to tank and aspirate remaining 1/2 of the solution
- Fill tank with water
- Use both aspirators to empty tank
- Repeat fill tank with water
- Repeat aspirating water from tank
- Fill tank to just above silver heaters
- Pour very slowly to avoid splshing
- Rinse using bench bottle wash
- Label bottle rinsed and dispose of in bottle recycle bin in 1480C
