ML12088A212: Difference between revisions
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| issue date = 03/08/2011 | | issue date = 03/08/2011 | ||
| title = E-mail from Bill Raymond, Region I to Mike Modes, Region I; Subject: Management Briefing Status Seabrook | | title = E-mail from Bill Raymond, Region I to Mike Modes, Region I; Subject: Management Briefing Status Seabrook | ||
| author name = Raymond W | | author name = Raymond W | ||
| author affiliation = NRC/RGN-I/DNMS | | author affiliation = NRC/RGN-I/DNMS | ||
| addressee name = Chaudhary S | | addressee name = Chaudhary S, Modes M | ||
| addressee affiliation = NRC/RGN-I/DNMS | | addressee affiliation = NRC/RGN-I/DNMS | ||
| docket = 05000443, 05000444 | | docket = 05000443, 05000444 | ||
Line 16: | Line 16: | ||
=Text= | =Text= | ||
{{#Wiki_filter:Turilin, Andrey From: Raymond, William Sent: Tuesday, March 08, 2011 8:23 AM To: Modes, Michael; Chaudhary, Suresh Cc: Burritt, Arthur; Johnson, Jonathan | {{#Wiki_filter:Turilin, Andrey From: Raymond, William Sent: Tuesday, March 08, 2011 8:23 AM To: Modes, Michael; Chaudhary, Suresh Cc: Burritt, Arthur; Johnson, Jonathan | ||
==Subject:== | ==Subject:== | ||
FW: Management Briefing: | FW: Management Briefing: Status of Seabrook Concrete Degradation | ||
Status of Seabrook Concrete Degradation | ---- Original Message---- | ||
----Original Message---- | From: Raymond, William Sent: Monday, March 07, 2011 11:00 PM To: Sheikh, Abdul Cc: Modes, Michael; Dan Naus; Auluck, Rajender | ||
From: Raymond, William Sent: Monday, March 07, 2011 11:00 PM To: Sheikh, Abdul Cc: Modes, Michael; Dan Naus; Auluck, Rajender | |||
==Subject:== | ==Subject:== | ||
RE: Management Briefing: | RE: Management Briefing: Status of Seabrook Concrete Degradation I agree with Abdul. NRC should ask NextEra to do more analyses. | ||
Status of Seabrook Concrete Degradation I agree with Abdul. NRC should ask NextEra to do more analyses.Bill From: Sheikh, Abdul Sent: Monday, March 07, 2011 5:01 PM To: Raymond, William Cc: Modes, Michael; Dan Naus; Auluck, Rajender | Bill From: Sheikh, Abdul Sent: Monday, March 07, 2011 5:01 PM To: Raymond, William Cc: Modes, Michael; Dan Naus; Auluck, Rajender | ||
==Subject:== | ==Subject:== | ||
RE: Management Briefing: | RE: Management Briefing: Status of Seabrook Concrete Degradation I am concerned about the following statement in the email: | ||
Status of Seabrook Concrete Degradation I am concerned about the following statement in the email: 4. (Abdul) As covered in pending RAI -make sure planned core testing will include tensile strength (as well as compressive strength, modulus and petrographic analysis). | : 4. (Abdul) As covered in pending RAI - make sure planned core testing will include tensile strength (as well as compressive strength, modulus and petrographic analysis). | ||
No. NextEra has no plans to obtain tensile strength values from the cores, since tensile strength is not in the design calculations, and there is no baseline test data to campare with for changes. NOTE -NRC MAY NEED TO REQUEST THIS IN AN RAI.My Comment: Concrete shear strength is a function of its tensile strength. | No. NextEra has no plans to obtain tensile strength values from the cores, since tensile strength is not in the design calculations, and there is no baseline test data to campare with for changes. NOTE - NRC MAY NEED TO REQUEST THIS IN AN RAI. | ||
With the concrete being cracked, the tensile and shear strength of concrete will be appreciably different from the code specified values based on compressive strength. | My Comment: | ||
In the design of outer perimeter walls, shear strength of concrete is an important consideration. | Concrete shear strength is a function of its tensile strength. With the concrete being cracked, the tensile and shear strength of concrete will be appreciably different from the code specified values based on compressive strength. In the design of outer perimeter walls, shear strength of concrete is an important consideration. In addition, the capacity of anchor bolts and embeds in concrete walls are based on shear (tensile) strength of concrete. Embeds located in cracked walls may not be capable of resisting design loads. | ||
In addition, the capacity of anchor bolts and embeds in concrete walls are based on shear (tensile) strength of concrete. | From: Raymond, William Sent: Thursday, March 03, 2011 10:52 AM To: Modes, Michael Cc: Hiland, Patrick; Clifford, James; Weerakkody, Sunil; Burritt, Arthur; Manoly, Kamal; Cline, Leonard; Conte, Richard; Auluck, Rajender; Galloway, Melanie; Khanna, Meena; Chaudhary, Suresh; DeFrancisco, Anne; Sheikh, Abdul; Roberts, Darrell; Wilson, Peter | ||
Embeds located in cracked walls may not be capable of resisting design loads.From: Raymond, William Sent: Thursday, March 03, 2011 10:52 AM To: Modes, Michael Cc: Hiland, Patrick; Clifford, James; Weerakkody, Sunil; Burritt, Arthur; Manoly, Kamal; Cline, Leonard; Conte, Richard; Auluck, Rajender; Galloway, Melanie; Khanna, Meena; Chaudhary, Suresh; DeFrancisco, Anne;Sheikh, Abdul; Roberts, Darrell; Wilson, Peter | |||
==Subject:== | ==Subject:== | ||
RE: Management Briefing: | RE: Management Briefing: Status of Seabrook Concrete Degradation Mike, Jfortunately, I cannot participate on that date. Jon will cover for the residents. | ||
Status of Seabrook Concrete Degradation Mike, Jfortunately, I cannot participate on that date. Jon will cover for the residents. | |||
Information in this record was deleted..- | Information in this record was deleted..- | ||
in accordance with the Fr edom of Information Act, exemptions 0A ,,p'-'Qf>sft FOJA. | in accordance with the Fr edom of Information Act, exemptions 0A ,,p'-'Qf>sft FOJA. | ||
'-9 2 6: Mike / Suresh -draft TIA on what DE input is needed for NRC's review of NE's operability analysis for the control building -make sure staff questions on adequacy of seismic analysis are addressed (Bill -provide thought/inputs to Mike & Suresh).)utside of Scope (43 3 Enforcement | |||
-Implications (Burritt/Raymonc TIA -Technical Issues (Modes | '-9 2 | ||
6: Mike / Suresh - draft TIA on what DE input is needed for NRC's review of NE's operability analysis for the control building - make sure staff questions on adequacy of seismic analysis are addressed (Bill - provide thought/inputs to Mike & Suresh). | |||
)utside of Scope (43 3 | |||
Enforcement - Implications (Burritt/Raymonc /IDeFrancisco) | |||
TIA - Technical Issues (Modes) 4}} |
Latest revision as of 07:14, 12 November 2019
ML12088A212 | |
Person / Time | |
---|---|
Site: | Seabrook |
Issue date: | 03/08/2011 |
From: | Raymond W Division of Nuclear Materials Safety I |
To: | Chaudhary S, Modes M Division of Nuclear Materials Safety I |
References | |
FOIA/PA-2012-0119 | |
Download: ML12088A212 (4) | |
Text
Turilin, Andrey From: Raymond, William Sent: Tuesday, March 08, 2011 8:23 AM To: Modes, Michael; Chaudhary, Suresh Cc: Burritt, Arthur; Johnson, Jonathan
Subject:
FW: Management Briefing: Status of Seabrook Concrete Degradation
Original Message----
From: Raymond, William Sent: Monday, March 07, 2011 11:00 PM To: Sheikh, Abdul Cc: Modes, Michael; Dan Naus; Auluck, Rajender
Subject:
RE: Management Briefing: Status of Seabrook Concrete Degradation I agree with Abdul. NRC should ask NextEra to do more analyses.
Bill From: Sheikh, Abdul Sent: Monday, March 07, 2011 5:01 PM To: Raymond, William Cc: Modes, Michael; Dan Naus; Auluck, Rajender
Subject:
RE: Management Briefing: Status of Seabrook Concrete Degradation I am concerned about the following statement in the email:
- 4. (Abdul) As covered in pending RAI - make sure planned core testing will include tensile strength (as well as compressive strength, modulus and petrographic analysis).
No. NextEra has no plans to obtain tensile strength values from the cores, since tensile strength is not in the design calculations, and there is no baseline test data to campare with for changes. NOTE - NRC MAY NEED TO REQUEST THIS IN AN RAI.
My Comment:
Concrete shear strength is a function of its tensile strength. With the concrete being cracked, the tensile and shear strength of concrete will be appreciably different from the code specified values based on compressive strength. In the design of outer perimeter walls, shear strength of concrete is an important consideration. In addition, the capacity of anchor bolts and embeds in concrete walls are based on shear (tensile) strength of concrete. Embeds located in cracked walls may not be capable of resisting design loads.
From: Raymond, William Sent: Thursday, March 03, 2011 10:52 AM To: Modes, Michael Cc: Hiland, Patrick; Clifford, James; Weerakkody, Sunil; Burritt, Arthur; Manoly, Kamal; Cline, Leonard; Conte, Richard; Auluck, Rajender; Galloway, Melanie; Khanna, Meena; Chaudhary, Suresh; DeFrancisco, Anne; Sheikh, Abdul; Roberts, Darrell; Wilson, Peter
Subject:
RE: Management Briefing: Status of Seabrook Concrete Degradation Mike, Jfortunately, I cannot participate on that date. Jon will cover for the residents.
Information in this record was deleted..-
in accordance with the Fr edom of Information Act, exemptions 0A ,,p'-'Qf>sft FOJA.
'-9 2
6: Mike / Suresh - draft TIA on what DE input is needed for NRC's review of NE's operability analysis for the control building - make sure staff questions on adequacy of seismic analysis are addressed (Bill - provide thought/inputs to Mike & Suresh).
)utside of Scope (43 3
Enforcement - Implications (Burritt/Raymonc /IDeFrancisco)
TIA - Technical Issues (Modes) 4