Tevatron lcw cooling reconfiguration analysis tevatron decommissioning activity meeting 2
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Tevatron lcw cooling Reconfiguration Analysis Tevatron Decommissioning Activity Meeting 2. Abhishek Deshpande 10/2011. Overview. A0’s flow requirements Flexible scenario that accommodates for HX cleaning; redundancy Scenarios simulated: Scenario A: 2 pumps at E4 and 2 pumps at F1

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Tevatron lcw cooling Reconfiguration Analysis Tevatron Decommissioning Activity Meeting 2

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Tevatron lcw cooling reconfiguration analysis tevatron decommissioning activity meeting 2

Tevatronlcw cooling Reconfiguration AnalysisTevatron Decommissioning ActivityMeeting 2

Abhishek Deshpande

10/2011


Overview

Overview

  • A0’s flow requirements

  • Flexible scenario that accommodates for HX cleaning; redundancy

  • Scenarios simulated:

    • Scenario A: 2 pumps at E4 and 2 pumps at F1

    • Scenario B: 2 pumps at F1 and 2 at F2

  • Scenario results

  • Reconfiguration of F1 and F2 service buildings to have 2 pumps

  • Conclusion


A0 s flow requirements finalized

A0’s flow requirements finalized

  • Spoke to John Reid about A0’s flow requirements

  • John stated that the current flows are higher than what is actually necessary

  • John also said that the 4” LCW header at A0 would need a minimum of 60 GPM @ 75 Psig

  • One of the major loads: 3.9 GHz Klystron, that needs 25 GPM of flow, most probably will be moved to NML

  • Also, the heat load at A0 is very small: 24 kW


Flexible scenario that accommodates for hx cleaning

Flexible scenario that accommodates for HX cleaning

Service building 1

Service building 2

Pump 1: On

Pump 2: Off

Pump 1: On

Pump 2: Off

Normal operation

Service building 1

Service building 2

Pump 1: Off

Pump 2: Off

Pump 1: On

Pump 2: On

Service building 1’s HX being cleaned

Service building 1

Service building 2

Service building 2’s HX being cleaned

Pump 1: On

Pump 2: On

Pump 1: Off

Pump 2: Off


Scenarios simulated scenario a 2 pumps at e4 and 2 pumps at f1

Scenarios simulated:Scenario A:2 pumps at E4 and 2 pumps at F1

  • All the flow rate requirements of the loads leading up to F4 enclosure were satisfied, however, if 2 pumps were being operated at E4 while F1’s HX was being cleaned, the following flows were predicted at F4 and A0:


Scenarios simulated scenario b 2 pumps at f1 and 2 pumps at f2

Scenarios simulated:Scenario B: 2 pumps at F1 and 2 pumps at F2

  • All the flow rate requirements of the loads leading up to F4 enclosure were satisfied, and F4 and A0 flows are as below:

Normal operation, one pump at F1 and one at F2


Scenarios simulated scenario b 2 pumps at f1 and 2 pumps at f21

Scenarios simulated:Scenario B: 2 pumps at F1 and 2 pumps at F2

F1 service building’s HX being cleaned, 2 pumps running at F2:


Scenarios simulated scenario b 2 pumps at f1 and 2 pumps at f22

Scenarios simulated:Scenario B: 2 pumps at F1 and 2 pumps at F2

F2 service building’s HX being cleaned, 2 pumps running at F1:


Reconfiguration of f1 and f2 service buildings to have 2 pumps

Reconfiguration of F1 and F2 service buildings to have 2 pumps

  • Unfortunately, F1 and F2 service buildings have only one pump per building:

Continued..


Reconfiguration of f1 and f2 service buildings to have 2 pumps1

Reconfiguration of F1 and F2 service buildings to have 2 pumps

Continued..


Reconfiguration of f1 and f2 service buildings to have 2 pumps2

Reconfiguration of F1 and F2 service buildings to have 2 pumps

  • In order to get a fairly good estimate of installing another pump, I am currently working with SEA contractor Jose Rangel

  • Jose said:

    • All the connecting piping would be stainless steel and not aluminum

    • To install one pump, and re-pipe the headers such that two pumps would run in parallel, it would require:

      • Two contractors working full time

      • Total number of 6” welds= 20-25


Reconfiguration of f1 and f2 service buildings to have 2 pumps3

Reconfiguration of F1 and F2 service buildings to have 2 pumps

  • The completed service building would look something like:

Continued..


Reconfiguration of f1 and f2 service buildings to have 2 pumps4

Reconfiguration of F1 and F2 service buildings to have 2 pumps


Reconfiguration of f1 and f2 service buildings to have 2 pumps5

Reconfiguration of F1 and F2 service buildings to have 2 pumps

  • Importance of redundancy:

    • According to Paul Czarapata, redundancy is not as important as it was during Tevatron’s Run II

    • However, it is desirable because the following experiments would be expecting beam:

      • The neutrino program

      • 2 test beams at Meson

      • Special projects

    • It costs close to $60,000/hr to run the accelerator complex, and if there is no redundancy the accelerator complex would have to be down for 3-4 days

    • Thus, a comparatively small investment to accommodate redundancy would prove to be fruitful from an operations perspective


Conclusions

Conclusions

  • Using E4 service building would not provide sufficient flow to all the loads in the MR remnant

  • Having 2 pumps at F1 and F2 would work for us

  • Redundancy is not as important as it was, but its still desirable

  • Future plans:

    • There is talk about using the A and B Tevatron sectors for a Plasma Accelerator project

    • There is also talk about IARC (Illinois Accelerator Research Center) using Tevatron’s cooling system water

    • If these plans get approval, then Scenario B (2 pumps at F1 and F2) will not work


Tevatron lcw cooling reconfiguration analysis tevatron decommissioning activity meeting 2

Questions, comments..


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