ML14057A850

NRR E-mail Capture - FW: Response Requested: Pilgrim Relief Request No. PR-03, Revision 4 (ML12342A386)

ML14057A850
Person / Time
Site:	Pilgrim
Issue date:	01/31/2014
From:	Lobo W Entergy Nuclear
To:	Nadiyah Morgan Division of Operating Reactor Licensing
References
Download: ML14057A850 (6)

Text

NRR-PMDAPEm Resource From: Lobo, Walter [wlobo@entergy.com]

Sent: Friday, January 31, 2014 1:37 PM To: Morgan, Nadiyah

Subject:

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

Attachments: Emailed PR-03 Revision to Main Pump Table - Dec 2013.pdf

Dee, The attached Revision to the Table was earlier requested and sent. Copy of the Table is attached 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.

Second paragraph on Page 103 of 174 states that 1

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

Vv Main pump (Note 1.1Vr >1.1 Vr to 1.3 Vr >1.3 Vr 1)** Horizontal but not or or Inboard (P3H) >1.06 in/sec >1.06 to 1.26 in/sec >1.26 in/sec Vv Main pump (Note 1.1Vr >1.5 Vr to 6 Vr >1.3 Vr 1)** Horizontal but not or or Outboard (P4H) >0.700 in/sec >0.700 to 0.83 in/sec >0.83 in/sec Vv Main pump 1.5Vr >1.5 Vr to 6 Vr >6 Vr Vertical Inboard but not or or (P3V) >0.450 in/sec >0.450 to 0.70 in/sec >0.70 in/sec Vv Main pump 2.5Vr >2.5 Vr to 6 Vr >6 Vr Vertical Outboard but not or Or (P4V) >0.325 in/sec >0.325 to 0.70 in/sec >0.70 in/sec Vv Main pump 1.5Vr >1.5 Vr to 6 Vr >6 Vr Axial Inboard but not or or (P3A) >0.500 in/sec >0.500 to 0.70 in/sec >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.

Nadiyah S. Morgan 2

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

Hearing Identifier: NRR_PMDA Email Number: 1120 Mail Envelope Properties (B237F4B35BE59849A53A9CCF00ADB84444304F5A)

Subject:

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

Sent Date: 1/31/2014 1:36:56 PM Received Date: 1/31/2014 1:37:03 PM 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 4763 1/31/2014 1:37:03 PM Emailed PR-03 Revision to Main Pump Table - Dec 2013.pdf 51815 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: