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| number = ML14057A851
| number = ML14057A851
| issue date = 01/31/2014
| issue date = 01/31/2014
| title = FW: Response Requested: Pilgrim Relief Request No. PR-03, Revision 4 (ML12342A386)
| title = NRR E-mail Capture - FW: Response Requested: Pilgrim Relief Request No. PR-03, Revision 4 (ML12342A386)
| author name = Lobo W
| author name = Lobo W
| author affiliation = Entergy Nuclear Operations, Inc
| author affiliation = Entergy Nuclear Operations, Inc
| addressee name = Morgan N S
| addressee name = Morgan N
| addressee affiliation = NRC/NRR/DORL
| addressee affiliation = NRC/NRR/DORL
| docket = 05000293
| docket = 05000293
Line 13: Line 13:
| page count = 7
| page count = 7
| project =  
| project =  
| stage = Other
| stage = Request
}}
}}


=Text=
=Text=
{{#Wiki_filter:1 NRR-PMDAPEm Resource From: Lobo, Walter [wlobo@entergy.com]
{{#Wiki_filter:1 NRR-PMDAPEm Resource From:
Sent: Friday, January 31, 2014 11:24 AM To: Morgan, Nadiyah
Lobo, Walter [wlobo@entergy.com]
Sent:
Friday, January 31, 2014 11:24 AM To:
Morgan, Nadiyah


==Subject:==
==Subject:==
Line 24: Line 27:
Attachments:
Attachments:
Email Clarification for January 30 - NRC Staff Question.docx Importance:
Email Clarification for January 30 - NRC Staff Question.docx Importance:
High Dee, Clarification is attached on our prior submittal. If the clarification resolves the issue, excellent. If a call is needed, we will have it next week. Thank you for the support.
High
Walter Lobo  
: Dee, Clarification is attached on our prior submittal.
 
If the clarification resolves the issue, excellent.
From: Morgan, Nadiyah [mailto:Nadiyah.Morgan@nrc.gov
If a call is needed, we will have it next week.
]  Sent: Thursday, January 30, 2014 4:11 PM To: Lobo, Walter  
Thank you for the support.
Walter Lobo From: Morgan, Nadiyah [mailto:Nadiyah.Morgan@nrc.gov]
Sent: Thursday, January 30, 2014 4:11 PM To: Lobo, Walter  


==Subject:==
==Subject:==
Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386) Importance: High Walt, I think that the reviewer would like to schedule a quick phone call. But if you can address this through email, that should be fine.  
Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386)
Importance: High
: Walt, I think that the reviewer would like to schedule a quick phone call. But if you can address this through email, that should be fine.
: Thanks, Dee From: Bedi, Gurjendra Sent: Thursday, January 30, 2014 4:06 PM To: Morgan, Nadiyah Cc: Bedi, Gurjendra  
: Thanks, Dee From: Bedi, Gurjendra Sent: Thursday, January 30, 2014 4:06 PM To: Morgan, Nadiyah Cc: Bedi, Gurjendra  


==Subject:==
==Subject:==
Pligrim Relief Request No. PR-03, revision 4 (ML12342A386) Importance: High Dee Pilgrim is requested to provide an clarification about wordings and table 1 of the Relief Request PR-03 as follows:
Pligrim Relief Request No. PR-03, revision 4 (ML12342A386)
Third paragraph on page 100 of 174 states that
Importance: High Dee Pilgrim is requested to provide an clarification about wordings and table 1 of the Relief Request PR-03 as follows:
 
Third paragraph on page 100 of 174 states that An significant conclusion of the PNPS HPCI vibration evaluation is that supplemental performance monitoring of the Main pump, by disregarding the single frequency component caused by the excitation at 4x Booster pump RPM, provides an important tool for assessing and trending pump mechanical condition. A single peak frequency component can be effectively deleted from a vibration spectrum using the mean-squared subtraction method; that is, the discrete component amplitude (in./sec.
An significant conclusion of the PNPS HPCI vibration evaluation is that supplemental performance monitoring of the Main pump, by disregarding the single frequency component caused by the excitation at 4x Booster pump RPM, provides an important tool for assessing and trending pump mechanical condition. A single peak frequency component can be effectively deleted from a vibration spectrum using the mean-squared subtraction method; that is, the discrete component amplitude (in./sec.
peak) is squared and subtracted from the spectrum overall level squared, then the square root of that difference represents the overall vibration level that exists without the energy contributed by the deleted component. It has been found that when this method is used, the remaining overall vibration level is much more consistent, stable, and trendable.  
peak) is squared and subtracted from the spectrum overall level squared, then the square root of that difference represents the overall vibration level that exists without the energy contributed by the deleted component. It has been found that when this method is used, the remaining overall vibration level is much more consistent, stable, and trendable.
2  Second paragraph on Page 103 of 174 states that The table  below provides the acceptance criteria that are applied to the overall vibration level for the Main pump. The note explains that for the horizontal Main pump points, the discrete frequency
 
components at 4x Booster pump RPM will be extracted from the overall value using the mean-squared subtraction method. The modified (corrected) overall values (points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM will be reviewed separately for change, and trended as a supplemental vibration performance monitoring activity.
 
Table Main Pump on page 104 of 175 states:


2 Second paragraph on Page 103 of 174 states that The table below provides the acceptance criteria that are applied to the overall vibration level for the Main pump. The note explains that for the horizontal Main pump points, the discrete frequency components at 4x Booster pump RPM will be extracted from the overall value using the mean-squared subtraction method. The modified (corrected) overall values (points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM will be reviewed separately for change, and trended as a supplemental vibration performance monitoring activity.
Table Main Pump on page 104 of 175 states:
Table-1, Main Pump**
Table-1, Main Pump**
Test Parameter Vibration Point Proposed Acceptable Range Proposed Alert Range Required Action Limit (Note 2)**
Test Parameter Vibration Point Proposed Acceptable Range Proposed Alert Range Required Action Limit (Note 2)**
V v Main pump (Note 1)** Horizontal Inboard (P3H) 1.1V r  but not >1.06 in/sec >1.1 V r to 1.3 V r or >1.06 to 1.26 in/sec >1.3 V r  or >1.26 in/sec V v  Main pump (Note 1)** Horizontal Outboard (P4H) 1.1V r  but not >0.700 in/sec >1.5 V r to 6 V r or >0.700 to 0.83 in/sec >1.3 V r  or >0.83 in/sec V v  Main pump Vertical Inboard (P3V) 1.5V r  but not >0.450 in/sec >1.5 V r to 6 V r or >0.450 to 0.70 in/sec >6 V r  or >0.70 in/sec V v  Main pump Vertical Outboard (P4V) 2.5V r  but not >0.325 in/sec >2.5 V r to 6 V r or >0.325 to 0.70 in/sec >6 V r  Or >0.70 in/sec V v  Main pump Axial Inboard (P3A) 1.5V r  but not >0.500 in/sec >1.5 V r to 6 V r or >0.500 to 0.70 in/sec >6 V r  or >0.70 in/sec Notes: 1. ** For the main pump horizontal vibration points P3H and P4H, a frequency spectrum analysis will be performed following each pump vibration operability test, and the discrete peak at 4x booster pump (4xBP) RPM will be extracted (using the mean-squared subtraction method) from the vibration spectrum overall value. In addition to the Alert and Required Action limits, the modified P3H and P4H overall values, resulting from the extraction of the discrete peak at 4xBP RPM, will be reviewed and trended as a supplemental vibration performance monitoring activity.
Vv Main pump (Note 1)** Horizontal Inboard (P3H) 1.1Vr but not  
Question for Pilgrim, please explain the following  
>1.06 in/sec  
>1.1 Vr to 1.3 Vr or  
>1.06 to 1.26 in/sec  
>1.3 Vr or  
>1.26 in/sec Vv Main pump (Note 1)** Horizontal Outboard (P4H) 1.1Vr but not  
>0.700 in/sec  
>1.5 Vr to 6 Vr or  
>0.700 to 0.83 in/sec  
>1.3 Vr or  
>0.83 in/sec Vv Main pump Vertical Inboard (P3V) 1.5Vr but not  
>0.450 in/sec  
>1.5 Vr to 6 Vr or  
>0.450 to 0.70 in/sec  
>6 Vr or  
>0.70 in/sec Vv Main pump Vertical Outboard (P4V) 2.5Vr but not  
>0.325 in/sec  
>2.5 Vr to 6 Vr or  
>0.325 to 0.70 in/sec  
>6 Vr Or  
>0.70 in/sec Vv Main pump Axial Inboard (P3A) 1.5Vr but not  
>0.500 in/sec  
>1.5 Vr to 6 Vr or  
>0.500 to 0.70 in/sec  
>6 Vr or  
>0.70 in/sec Notes:
: 1. ** For the main pump horizontal vibration points P3H and P4H, a frequency spectrum analysis will be performed following each pump vibration operability test, and the discrete peak at 4x booster pump (4xBP) RPM will be extracted (using the mean-squared subtraction method) from the vibration spectrum overall value. In addition to the Alert and Required Action limits, the modified P3H and P4H overall values, resulting from the extraction of the discrete peak at 4xBP RPM, will be reviewed and trended as a supplemental vibration performance monitoring activity.
Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.
Thank you G. S. Bedi From: Morgan, Nadiyah Sent: Thursday, January 30, 2014 3:11 PM To: Bedi, Gurjendra


All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.
==Subject:==
Thank you
I'm on the phone with Pilgrim right now.  


G. S. Bedi
3 Nadiyah S. Morgan Calvert Cliffs and Pilgrim Project Manager, NRR US Nuclear Regulatory Commission O-8F4 (301) 415-1016 Nadiyah.Morgan@NRC.GOV


From: Morgan, Nadiyah Sent: Thursday, January 30, 2014 3:11 PM To: Bedi, Gurjendra
Hearing Identifier:
NRR_PMDA Email Number:
1121 Mail Envelope Properties (B237F4B35BE59849A53A9CCF00ADB84444304EAE)


==Subject:==
==Subject:==
I'm on the phone with Pilgrim right now.
FW: Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386)
3  Nadiyah S. Morgan Calvert Cliffs and Pilgrim Project Manager, NRR US Nuclear Regulatory Commission O-8F4 (301) 415-1016 Nadiyah.Morgan@NRC.GOV
Sent Date:
 
1/31/2014 11:24:23 AM Received Date:
Hearing Identifier:  NRR_PMDA Email Number:  1121  Mail Envelope Properties  (B237F4B35BE59849A53A9CCF00ADB84444304EAE) 
1/31/2014 11:24:28 AM From:
 
Lobo, Walter Created By:
==Subject:==
wlobo@entergy.com Recipients:  
FW: Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386) Sent Date:   1/31/2014 11:24:23 AM Received Date: 1/31/2014 11:24:28 AM From:   Lobo, Walter Created By:   wlobo@entergy.com Recipients:     "Morgan, Nadiyah" <Nadiyah.Morgan@nrc.gov> Tracking Status: None  
"Morgan, Nadiyah" <Nadiyah.Morgan@nrc.gov>
 
Tracking Status: None Post Office:
Post Office:   LITXMETSP003.etrsouth.corp.entergy.com Files     Size     Date & Time MESSAGE   4847     1/31/2014 11:24:28 AM Email Clarification for January 30 - NRC Staff Question.docx   20323
LITXMETSP003.etrsouth.corp.entergy.com Files Size Date & Time MESSAGE 4847 1/31/2014 11:24:28 AM Email Clarification for January 30 - NRC Staff Question.docx 20323 Options Priority:
 
High Return Notification:
Options Priority:     High   Return Notification:   No   Reply Requested:   No   Sensitivity:     Normal Expiration Date:     Recipients Received:
No Reply Requested:
Attachment for Email Clarification to January 30, 2014 - NRC Staff Question Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything. Thank you G. S. Bedi
No Sensitivity:
 
Normal Expiration Date:
Pilgrim Response:
Recipients Received:  
: 1) You understand correctly that the values shown in Table 1 (Table Main Pump on page 104 of 175) are all full values (unfiltered) without any extraction of the discrete vibration peak. The limits in Table 1 will be used as the OM Code Acceptable, Alert, and Required Action values.
: 2) The intention of "
Second paragraph on Page 103 of 174", and Note 1 on Table 1, is to identify that Pilgrim will administratively conduct an additional (supplemental) performance monitoring activity as follows:  In addition to the OM Code vibration monitoring as specified in Table 1, administrative (supplemental) vibration performance monitoring will also be performed by Pilgrim. The supplemental performance monitoring activity will look at the modified (filtered) overall
 
values (for points P3H and P4H) resulting from the extraction of the discrete peak at


4xBooster pump RPM (using the mean-squared subtraction method). The modified (corrected/filtered) overall values for points P3H and P4H will reviewed (in addition to the OM Code specified vibration monitoring) separately for change and trended.
Attachment for Email Clarification to January 30, 2014 - NRC Staff Question Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.
NRC Request
Thank you G. S. Bedi Pilgrim Response:
: Pilgrim is requested to provide an clarification about wordings and table 1 of the Relief Request PR-03 as follows:
: 1) You understand correctly that the values shown in Table 1 (Table Main Pump on page 104 of 175) are all full values (unfiltered) without any extraction of the discrete vibration peak.
Third paragraph on page 100 of 174 states that An significant conclusion of the PNPS HPCI vibration evaluation is that supplemental performance monitoring of the Main pump, by disregarding the single frequency component caused by the excitation at 4x Booster pump RPM, provides an important tool for assessing and trending pump mechanical condition. A single peak frequency component can be effectively deleted from a vibration spectrum using the mean-s quared subtraction method; that is, the discrete component amplitude (in./sec.
The limits in Table 1 will be used as the OM Code Acceptable, Alert, and Required Action values.
peak) is squared and subtracted from the spectrum overall level square d, then the square root of that difference represents the overall vibr ation level that exists without the energy contributed by the deleted component.
: 2) The intention of Second paragraph on Page 103 of 174, and Note 1 on Table 1, is to identify that Pilgrim will administratively conduct an additional (supplemental) performance monitoring activity as follows:
It has been found that when this method is used, the remaining overall vibration level is much more consistent, stable, and trendable. Second paragraph on Page 103 of 174 states that The table  below provides the acceptance criteria that are appl ied to the overall vibration level for the Main pump. The note explains that for the horizontal Main pump points, the discrete frequency com ponents at 4x Booster pump RPM will be extracted from the overall value using the mean-squared subtraction method. The modified (corrected) overall val ues (points P3H and P4H) resulting from the extraction of t he discrete peak at 4xBooster pump RPM will be reviewed separately for change, and trended as a supplemental vibration performance monitoring activity.
In addition to the OM Code vibration monitoring as specified in Table 1, administrative (supplemental) vibration performance monitoring will also be performed by Pilgrim.
Table Main Pump on page 104 of 175 states:
The supplemental performance monitoring activity will look at the modified (filtered) overall values (for points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM (using the mean-squared subtraction method). The modified (corrected/filtered) overall values for points P3H and P4H will reviewed (in addition to the OM Code specified vibration monitoring) separately for change and trended.
NRC Request:
Pilgrim is requested to provide an clarification about wordings and table 1 of the Relief Request PR-03 as follows:
Third paragraph on page 100 of 174 states that An significant conclusion of the PNPS HPCI vibration evaluation is that supplemental performance monitoring of the Main pump, by disregarding the single frequency component caused by the excitation at 4x Booster pump RPM, provides an important tool for assessing and trending pump mechanical  


condition. A single peak frequency component can be effectively deleted from a vibration spectrum using the mean-squared subtraction method; that is, the discrete component amplitude (in./sec. peak) is squared and subtracted from the spectrum overall level squared, then the square root of that difference represents the overall vibration level that exists without the energy contributed by the deleted component. It has been found that when this method is used, the remaining overall vibration level is much more consistent, stable, and trendable.
Second paragraph on Page 103 of 174 states that The table below provides the acceptance criteria that are applied to the overall vibration level for the Main pump. The note explains that for the horizontal Main pump points, the discrete frequency components at 4x Booster pump RPM will be extracted from the overall value using the mean-squared subtraction method. The modified (corrected) overall values (points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM will be reviewed separately for change, and trended as a supplemental vibration performance monitoring activity.
Table Main Pump on page 104 of 175 states:
Table-1, Main Pump**
Table-1, Main Pump**
Test Parameter Vibration Point Proposed Acceptable Range Proposed Alert Range Required Action Limit (Note 2)**
Test Parameter Vibration Point Proposed Acceptable Range Proposed Alert Range Required Action Limit (Note 2)**
V v Main pump (Note 1)** Horizontal Inboard (P3H) 1.1V r  but not >1.06 in/sec >1.1 V r to 1.3 V r or >1.06 to 1.26 in/sec >1.3 V r  or >1.26 in/sec V v  Main pump (Note 1)** Horizontal Outboard (P4H) 1.1V r  but not >0.700 in/sec >1.5 V r to 6 V r or >0.700 to 0.83 in/sec >1.3 V r  or >0.83 in/sec V v  Main pump Vertical Inboard (P3V) 1.5V r  but not >1.5 V r to 6 V r or >6 V r  or
Vv Main pump (Note 1)** Horizontal Inboard (P3H) 1.1Vr but not  
>0.450 in/sec >0.450 to 0.70 in/sec >0.70 in/sec V v  Main pump Vertical Outboard (P4V) 2.5V r  but not  >0.325 in/sec >2.5 V r to 6 V r or >0.325 to 0.70 in/sec >6 V r  Or >0.70 in/sec V v  Main pump Axial Inboard (P3A) 1.5V r  but not  >0.500 in/sec >1.5 V r to 6 V r or >0.500 to 0.70 in/sec >6 V r  or >0.70 in/sec Notes: 1. ** For the main pump horizontal vibr ation points P3H and P4H, a frequency spectrum analysis will be performed fo llowing each pump vibration operability test, and the discrete peak at 4x booster pump (4xBP) RPM will be extracted (using the mean-squared subtraction method) from the vibration spectrum overall value.
>1.06 in/sec  
In addition to the Alert and Required Action limits, the modified P3H and P4H overall values, resulting from the extraction of the discrete peak at 4xBP RPM, will be reviewed and trended as a supplemental vibration
>1.1 Vr to 1.3 Vr or  
>1.06 to 1.26 in/sec  
>1.3 Vr or  
>1.26 in/sec Vv Main pump (Note 1)** Horizontal Outboard (P4H) 1.1Vr but not  
>0.700 in/sec  
>1.5 Vr to 6 Vr or  
>0.700 to 0.83 in/sec  
>1.3 Vr or  
>0.83 in/sec Vv Main pump Vertical Inboard (P3V) 1.5Vr but not  
>1.5 Vr to 6 Vr or  
>6 Vr or  


performance monitoring activity.
>0.450 in/sec
Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full va lues (unfiltered) without any extraction. Or NRC staff is missing anything.}}
>0.450 to 0.70 in/sec
>0.70 in/sec Vv Main pump Vertical Outboard (P4V) 2.5Vr but not
>0.325 in/sec
>2.5 Vr to 6 Vr or
>0.325 to 0.70 in/sec
>6 Vr Or
>0.70 in/sec Vv Main pump Axial Inboard (P3A) 1.5Vr but not
>0.500 in/sec
>1.5 Vr to 6 Vr or
>0.500 to 0.70 in/sec
>6 Vr or
>0.70 in/sec Notes:
: 1. ** For the main pump horizontal vibration points P3H and P4H, a frequency spectrum analysis will be performed following each pump vibration operability test, and the discrete peak at 4x booster pump (4xBP) RPM will be extracted (using the mean-squared subtraction method) from the vibration spectrum overall value. In addition to the Alert and Required Action limits, the modified P3H and P4H overall values, resulting from the extraction of the discrete peak at 4xBP RPM, will be reviewed and trended as a supplemental vibration performance monitoring activity.
Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered),
whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.}}

Latest revision as of 23:00, 10 January 2025

NRR E-mail Capture - FW: Response Requested: Pilgrim Relief Request No. PR-03, Revision 4 (ML12342A386)
ML14057A851
Person / Time
Site: Pilgrim
Issue date: 01/31/2014
From: Lobo W
Entergy Nuclear Operations
To: Nadiyah Morgan
Division of Operating Reactor Licensing
References
Download: ML14057A851 (7)
v • d • e


Text

1 NRR-PMDAPEm Resource From:

Lobo, Walter [wlobo@entergy.com]

Sent:

Friday, January 31, 2014 11:24 AM To:

Morgan, Nadiyah

Subject:

FW: Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386)

Attachments:

Email Clarification for January 30 - NRC Staff Question.docx Importance:

High

Dee, Clarification is attached on our prior submittal.

If the clarification resolves the issue, excellent.

If a call is needed, we will have it next week.

Thank you for the support.

Walter Lobo From: Morgan, Nadiyah [1]

Sent: Thursday, January 30, 2014 4:11 PM To: Lobo, Walter

Subject:

Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386)

Importance: High

Walt, I think that the reviewer would like to schedule a quick phone call. But if you can address this through email, that should be fine.
Thanks, Dee From: Bedi, Gurjendra Sent: Thursday, January 30, 2014 4:06 PM To: Morgan, Nadiyah Cc: Bedi, Gurjendra

Subject:

Pligrim Relief Request No. PR-03, revision 4 (ML12342A386)

Importance: High Dee Pilgrim is requested to provide an clarification about wordings and table 1 of the Relief Request PR-03 as follows:

Third paragraph on page 100 of 174 states that An significant conclusion of the PNPS HPCI vibration evaluation is that supplemental performance monitoring of the Main pump, by disregarding the single frequency component caused by the excitation at 4x Booster pump RPM, provides an important tool for assessing and trending pump mechanical condition. A single peak frequency component can be effectively deleted from a vibration spectrum using the mean-squared subtraction method; that is, the discrete component amplitude (in./sec.

peak) is squared and subtracted from the spectrum overall level squared, then the square root of that difference represents the overall vibration level that exists without the energy contributed by the deleted component. It has been found that when this method is used, the remaining overall vibration level is much more consistent, stable, and trendable.

2 Second paragraph on Page 103 of 174 states that The table below provides the acceptance criteria that are applied to the overall vibration level for the Main pump. The note explains that for the horizontal Main pump points, the discrete frequency components at 4x Booster pump RPM will be extracted from the overall value using the mean-squared subtraction method. The modified (corrected) overall values (points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM will be reviewed separately for change, and trended as a supplemental vibration performance monitoring activity.

Table Main Pump on page 104 of 175 states:

Table-1, Main Pump**

Test Parameter Vibration Point Proposed Acceptable Range Proposed Alert Range Required Action Limit (Note 2)**

Vv Main pump (Note 1)** Horizontal Inboard (P3H) 1.1Vr but not

>1.06 in/sec

>1.1 Vr to 1.3 Vr or

>1.06 to 1.26 in/sec

>1.3 Vr or

>1.26 in/sec Vv Main pump (Note 1)** Horizontal Outboard (P4H) 1.1Vr but not

>0.700 in/sec

>1.5 Vr to 6 Vr or

>0.700 to 0.83 in/sec

>1.3 Vr or

>0.83 in/sec Vv Main pump Vertical Inboard (P3V) 1.5Vr but not

>0.450 in/sec

>1.5 Vr to 6 Vr or

>0.450 to 0.70 in/sec

>6 Vr or

>0.70 in/sec Vv Main pump Vertical Outboard (P4V) 2.5Vr but not

>0.325 in/sec

>2.5 Vr to 6 Vr or

>0.325 to 0.70 in/sec

>6 Vr Or

>0.70 in/sec Vv Main pump Axial Inboard (P3A) 1.5Vr but not

>0.500 in/sec

>1.5 Vr to 6 Vr or

>0.500 to 0.70 in/sec

>6 Vr or

>0.70 in/sec Notes:

1. ** For the main pump horizontal vibration points P3H and P4H, a frequency spectrum analysis will be performed following each pump vibration operability test, and the discrete peak at 4x booster pump (4xBP) RPM will be extracted (using the mean-squared subtraction method) from the vibration spectrum overall value. In addition to the Alert and Required Action limits, the modified P3H and P4H overall values, resulting from the extraction of the discrete peak at 4xBP RPM, will be reviewed and trended as a supplemental vibration performance monitoring activity.

Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.

Thank you G. S. Bedi From: Morgan, Nadiyah Sent: Thursday, January 30, 2014 3:11 PM To: Bedi, Gurjendra

Subject:

I'm on the phone with Pilgrim right now.

3 Nadiyah S. Morgan Calvert Cliffs and Pilgrim Project Manager, NRR US Nuclear Regulatory Commission O-8F4 (301) 415-1016 Nadiyah.Morgan@NRC.GOV

Hearing Identifier:

NRR_PMDA Email Number:

1121 Mail Envelope Properties (B237F4B35BE59849A53A9CCF00ADB84444304EAE)

Subject:

FW: Response Requested: Pilgrim Relief Request No. PR-03, revision 4 (ML12342A386)

Sent Date:

1/31/2014 11:24:23 AM Received Date:

1/31/2014 11:24:28 AM From:

Lobo, Walter Created By:

wlobo@entergy.com Recipients:

"Morgan, Nadiyah" <Nadiyah.Morgan@nrc.gov>

Tracking Status: None Post Office:

LITXMETSP003.etrsouth.corp.entergy.com Files Size Date & Time MESSAGE 4847 1/31/2014 11:24:28 AM Email Clarification for January 30 - NRC Staff Question.docx 20323 Options Priority:

High Return Notification:

No Reply Requested:

No Sensitivity:

Normal Expiration Date:

Recipients Received:

Attachment for Email Clarification to January 30, 2014 - NRC Staff Question Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered), whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.

Thank you G. S. Bedi Pilgrim Response:

1) You understand correctly that the values shown in Table 1 (Table Main Pump on page 104 of 175) are all full values (unfiltered) without any extraction of the discrete vibration peak.

The limits in Table 1 will be used as the OM Code Acceptable, Alert, and Required Action values.

2) The intention of Second paragraph on Page 103 of 174, and Note 1 on Table 1, is to identify that Pilgrim will administratively conduct an additional (supplemental) performance monitoring activity as follows:

In addition to the OM Code vibration monitoring as specified in Table 1, administrative (supplemental) vibration performance monitoring will also be performed by Pilgrim.

The supplemental performance monitoring activity will look at the modified (filtered) overall values (for points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM (using the mean-squared subtraction method). The modified (corrected/filtered) overall values for points P3H and P4H will reviewed (in addition to the OM Code specified vibration monitoring) separately for change and trended.

NRC Request:

Pilgrim is requested to provide an clarification about wordings and table 1 of the Relief Request PR-03 as follows:

Third paragraph on page 100 of 174 states that An significant conclusion of the PNPS HPCI vibration evaluation is that supplemental performance monitoring of the Main pump, by disregarding the single frequency component caused by the excitation at 4x Booster pump RPM, provides an important tool for assessing and trending pump mechanical

condition. A single peak frequency component can be effectively deleted from a vibration spectrum using the mean-squared subtraction method; that is, the discrete component amplitude (in./sec. peak) is squared and subtracted from the spectrum overall level squared, then the square root of that difference represents the overall vibration level that exists without the energy contributed by the deleted component. It has been found that when this method is used, the remaining overall vibration level is much more consistent, stable, and trendable.

Second paragraph on Page 103 of 174 states that The table below provides the acceptance criteria that are applied to the overall vibration level for the Main pump. The note explains that for the horizontal Main pump points, the discrete frequency components at 4x Booster pump RPM will be extracted from the overall value using the mean-squared subtraction method. The modified (corrected) overall values (points P3H and P4H) resulting from the extraction of the discrete peak at 4xBooster pump RPM will be reviewed separately for change, and trended as a supplemental vibration performance monitoring activity.

Table Main Pump on page 104 of 175 states:

Table-1, Main Pump**

Test Parameter Vibration Point Proposed Acceptable Range Proposed Alert Range Required Action Limit (Note 2)**

Vv Main pump (Note 1)** Horizontal Inboard (P3H) 1.1Vr but not

>1.06 in/sec

>1.1 Vr to 1.3 Vr or

>1.06 to 1.26 in/sec

>1.3 Vr or

>1.26 in/sec Vv Main pump (Note 1)** Horizontal Outboard (P4H) 1.1Vr but not

>0.700 in/sec

>1.5 Vr to 6 Vr or

>0.700 to 0.83 in/sec

>1.3 Vr or

>0.83 in/sec Vv Main pump Vertical Inboard (P3V) 1.5Vr but not

>1.5 Vr to 6 Vr or

>6 Vr or

>0.450 in/sec

>0.450 to 0.70 in/sec

>0.70 in/sec Vv Main pump Vertical Outboard (P4V) 2.5Vr but not

>0.325 in/sec

>2.5 Vr to 6 Vr or

>0.325 to 0.70 in/sec

>6 Vr Or

>0.70 in/sec Vv Main pump Axial Inboard (P3A) 1.5Vr but not

>0.500 in/sec

>1.5 Vr to 6 Vr or

>0.500 to 0.70 in/sec

>6 Vr or

>0.70 in/sec Notes:

1. ** For the main pump horizontal vibration points P3H and P4H, a frequency spectrum analysis will be performed following each pump vibration operability test, and the discrete peak at 4x booster pump (4xBP) RPM will be extracted (using the mean-squared subtraction method) from the vibration spectrum overall value. In addition to the Alert and Required Action limits, the modified P3H and P4H overall values, resulting from the extraction of the discrete peak at 4xBP RPM, will be reviewed and trended as a supplemental vibration performance monitoring activity.

Question for Pilgrim, please explain the following All the wording in above paragraphs says that discrete peak will be extracted (filtered),

whereas the values shown in table all full values (unfiltered) without any extraction. Or NRC staff is missing anything.

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