ML20196L253

Recommends Closeout of Eab Long-Term Followup Item 87-157 on Reactor Coolant Pump Shaft Cracking at Plant.Modified Shafts Installed & Vibration Monitoring Programs in Place

ML20196L253
Person / Time
Site:	Palo Verde
Issue date:	06/28/1988
From:	Marlone Davis Office of Nuclear Reactor Regulation
To:	Lanning W Office of Nuclear Reactor Regulation
References
TAC-68248, NUDOCS 8807070322
Download: ML20196L253 (2)

Text

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' MEMORANDUM FOR: . Wayne Lanning, OEAB FROM: Mi nael J. Davis, Project Manager r.oject Directorate V Division of Reactor Projects - III, IV, Y and Special Projects Office of. Nuclear Reactor Regulation

SUBJECT:

- CLOSE0VT OF LONG-TERM FOLLOWUP ITEM 87-157 As per our discussion with George Knighton on June 23, 1988, I recommend closecut of EAB Long-Term Followup. Item 87-157 on Reactor Coolant Pumi Shaft Cracking at Palo Verde. _

-Modified shafts have been installed in the. Unit I and Unit 2 RCPs during their respective first refueling outages. Modified shafts will be installed in Unit 3 RCPs during-the Spring 1989 first refueling outage. Vibration monitoring programs are in place on all 3 units.

A report submitted iy the licensee on May 20, 1988, sumnarizes the results of the RCP Shaft Inspections on Units 1 and 2. TAC Number 68248 covers review of this report.

original signed by Michael J. Davis, Project Manager Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation CONTACT: Michael J. Davis, NRR, X21368

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\ , , , , , **l Jura 28, 1988 MEMORANDUM FOR: Wayne Lanning, OEAB FR0h: Michael J. Davis, Project Manager Project Directorate V Division of keactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation

SUBJECT:

CLOSE0VT OF LONG-TERM FOLLOWUP ITEM 87-157 As per cur discussion with George Knighton on June 23, 1988, I recommend closecut of EAB Long-Term Followup Item 87-157 on Reactor Coolant Pump Shaft Cracking at Palo Verde.

Modified shafts have been installed in the Unit I and Unit 2 RCPs during their respective first refueling outages. Modified shafts will be installed in Unit 3 RCPs during the Spring 1989 first refueling outage. Vibration monitoring programs are in place on all 3 units.

A report submitted by the licensee on May 20, 1988, summarizes the results of the RCP Shaft Inspections on Units 1 and 2. TAC Number 68248 covers review of this report.

ff'g U-, w Michael J. Davit. Project.ianager Project Director 0te V Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation 1