ML102920109

5.6 Exhibit 8 Cap Grease Leakage

ML102920109
Person / Time
Site:	Crystal River
Issue date:	02/04/2009
From:	Precision Surveillance Corp, Progress Energy Co
To:	NRC/RGN-II
References
FOIA/PA-2010-0116
Download: ML102920109 (1)

Text

FM 5.6 Exhibit 8 Page 1 of 1 DOCUMENT NUMBER: CR-N1002-504 REVISION: 1 PAGE: 23 DOCUMENT TITLE: FINAL REPORT FOR THE 3 0 TH YEAR CONTAINMENT IWL INSPECTION PROJECT TITLE: 30TI YEAR TENDON SURVEILLANCE AT CRYSTAL RIVER DATE: 02/04/2009 Progress Energy 6.0 TENDON ACCESSIBILITY 6.1 The PSC field personnel performed a general examination for tendon accessibility during this surveillance period. This examination was performed in order to assist CR03ENG in the planning of future surveillances. The results are summarized in Tables 27 thru 38.

6.2 During this examination it was noted that small grease/oil leaks were occurring on multiple tendon caps, which were located inside existing structures that adjoin the containment building. The substance displacing from the tendon cap is actually the oil portion from the original P2 grease that has separated.

This is a common occurrence that has been noted throughout many plants during tendon surveillances.

This condition does not correspond to the system's degradation. A small amount of oil can cause a large aesthetically unpleasing condition. On buttresses without any coating, the oil is absorbed into the concrete, leaving very little signs of leakage. However, in the existing condition, the coated surface does not allow for the absorption to occur. Therefore, the oil continues to displace down the buttress face.

PSC recommends this condition be monitored and cleaned on a periodic basis. Gasket replacement can be performed on the tendon cap, however the oil will continue to leak from the cap based on our experience. The labor and material required for the gasket replacement is not cost effective and PSC does not recommend performing such task.

TAL 27,2 .2VSRE - TEN' ACESBLT MTI- O I I tAv uZ *-T&B 23V 02 T&B 12V 03 T&B 23V03 _ T&B 12V 04 T&B 23V 04 T& B 1--12-V 051- T&B 23V 05 T&B

--- 12V - T LB T&B 12V 07 T&B 23V "107 T&B 069_

12V-08-- T&B 2`bV08 12V 09 T &B -23V09-1_ T&B 12V 10 T&B T&B T&B

_-12V 11 23V 12 T&B T&B T&B

___ 2V 12 -

12V 13 T&B T&B 23V_14 12V 14 T&B T&B 12V 15 23V 12 T&B 12V 16 23V 14 T&B T&BB

-,_--T& T&B 12V 17 ;23V 16 V 118- 23V 179 T & B, T&B T&B T&B 12V 20- T&B T&B 12V 21 T&B 23V 21 T&B

. 12V 22 23V 22 T&B 12V 23 T&B 23V 23 T& B 12V 24 23V 24 T& B T = TOP CAN B = BOTTOM END 1'63