1 / 19

GTSTRUDL User’s Group Annual Meeting - 2012

GTSTRUDL User’s Group Annual Meeting - 2012. STANDBY LIQUID CONTROL TEST TANK. June 14, 2012 Parimal Gandhi, PE Sr. Engineer. PURPOSE : SBLC TEST TANK.

studs
Download Presentation

GTSTRUDL User’s Group Annual Meeting - 2012

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GTSTRUDL User’s Group Annual Meeting - 2012 STANDBY LIQUID CONTROL TEST TANK June 14, 2012Parimal Gandhi, PE Sr. Engineer

  2. PURPOSE : SBLC TEST TANK • To ensure that the SBLC Test Tank is supported adequately such that it will not fail and impact the surrounding safety related valves and piping during a seismic event. • .

  3. AGENDA : SBLC TEST TANK • BACKGROUND SBLC SYSTEM • NRC INFORMATION NOTICE 2012-01 • TANK & SUPPORT MATH MODEL • DESIGN & ANALYSIS OF TANK STRUCTURE • RESULTS • SUMMARY OF CONCLUSIONS

  4. BACKGROUND : SBLC SYSYTEM SBLC TEST TANK SBLC STORAGE TANK If Control Rods are not available, then use Boron to absorb neutrons

  5. BACKGROUND: SBLC TEST TANK • The SBLC test tank is a stainless steel, 220 gallon tank used for performing surveillances on the SBLC system. • During pump operability test, demin water is added to the test tank, the SBLC storage tank is isolated from the pumps, the SBLC test tank is aligned to the pumps. • SBLC test tank is not safety related. • SBLC test tank is designed for seismic II/I criteria.

  6. NRC INFORMATION NOTICE 2012-01 • To inform addressees of recent operating experience related to seismic concerns principally issues involving tanks. • The SBLC test tank was not seismically qualified when they contained water. • The SBLC test tank could potentially fall over or collapse during a seismic event and impact safety-related equipment located nearby.

  7. TANK & SUPPORT MATH MODEL

  8. TANK & SUPPORT MATH MODEL

  9. TANK & SUPPORT MATH MODEL • The SBLC test tank : modeled as an open tank consisting of SBHQ6 & SBHT6 plate bending finite elements. • Supporting structures : schedule 40 pipes, modeled as column elements. • Support Base plates: Plate bending finite elements SBHQ6 & SBHT6. • Concrete & Bolts : Nonlinear spring elements

  10. DESIGN & ANALYSIS OF TANK STRUCTURE Ref.: Fundamentals of Earthquake Engineering By Nathan M. Newmark and Emilio Rosenblueth

  11. DESIGN & ANALYSIS OF TANK STRUCTURE

  12. DESIGN & ANALYSIS OF TANK STRUCTURE

  13. DESIGN & ANALYSIS OF TANK STRUCTURE For Bolted Steel Structure 5% Damping DBE Horizontal Acceleration Response Spectra

  14. DESIGN & ANALYSIS OF TANK STRUCTURE

  15. RESULTS: SBLC TEST TANK • Max. Stress = 22.895 ksi < 0.9x30 =27.0 ksi ok.

  16. RESULTS: SBLC TEST TANK • Max. Stress = 19.836 ksi < 0.75x30 =27.0 ksi ok.

  17. RESULTS: SBLC TEST TANK

  18. SUMMARY OF CONCLUSIONS • The supporting structure for SBLC test tank is adequate for storage of 30” of water during a seismic event.

  19. THE END Questions? Thank you.

More Related