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[Zhenyu Ye <yezhenyu2003 AT gmail.com>]

Thank you, Mike.

Zhenyu

On Aug 26, 2021, at 12:29 PM, Capotosto, Michael <capotosto AT bnl.gov> wrote:

Hey Zhenyu, 

 

Sorry I forgot to send yesterday. 

 

The setpoints are as follows: 

Tank Level above set point: >35%

Supply flow rate above set point: 5LPM

Return flow rate above set point: 5LPM

 

 

Coolant temp above minimum temp: 20C (Ambient is ~22-23C right now)

Coolant temp below upper limit: 30C

 

--Mike

 

From: Zhenyu Ye <yezhenyu2003 AT gmail.com> 
Sent: Wednesday, August 25, 2021 9:03 AM
To: Hu, Yu <yuhu AT bnl.gov>
Cc: Sun, Xu <xusun87 AT uic.edu>; Capotosto, Michael <capotosto AT bnl.gov>; Christian Videbæk <christian.videbaek AT gmail.com>
Subject: Re: [Star-fst-l] Status Updates on FST Cooling System Slow Control

 

Attached is the manual for IST cooling system. Please take a look.

 

On page 7, there is a table for cooling system internal interlocks. 

 

Mike, can you confirm the interlock is set in the same way, and how large the set points are for 

 

Tank Level above set point

Supply flow rate above set point

Return flow rate above set point

Coolant temp above minimum temp

Coolant temp below upper limit

 

 

 

On Aug 25, 2021, at 7:27 AM, Zhenyu Ye <yezhenyu2003 AT gmail.com> wrote:

 

Thank you, Yu, Jarda and David. 

 

Yu, from your point of view, is there anything else that needs to be done for the cooling system slow control?

Can you document the cooling system slow control, including software (IOC, python scripts, etc, where they 

are, how to start the programs, and operate procedure)? 

 

We also need to define some limits for alarm conditions, like flow rate, temperature etc. I am not sure if we still have the old IST records in the STAR Alarm system. If so, they will be good starting point. Otherwise we will have to come up with our own. 

 

Zhenyu

 

On Aug 24, 2021, at 3:49 PM, Hu, Yu <yuhu AT bnl.gov> wrote:

 

Dear All,

 

A few updates on the slow control for the FST cooling system.

With a lot of help from Jarda and David, we fixed the error, tested the new ioc and the GUI as well. In a short word, it works perfectly.

 

During the test, we are able to,

 1. Turn on and off the pump with the FST expert cooling GUI

 2. Turn on and off the chiller with the FST expert cooling GUI after switching the chiller controller from "local" to "remote"

 3. When we turn off the chiller (one of the interlock sources), it will trigger the interlock alarm for FST cooling, and then we see the modules in MPOD crates are powered off. This means it also successfully triggers the interlock for MPOD crates.

 

Now we turn off the power for the system for tomorrow's test, after we get the system back online, we will add the watchdog program for the new ioc for the future error track.

 

Thank you.

Best,

Yu

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