05000255/LER-2001-004-01, Re Control Rod Drive Mechanism Upper Housing Assembly Crack Indications
| ML020870353 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 03/14/2002 |
| From: | Harden P Nuclear Management Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| -nr LER-01-004-01 | |
| Download: ML020870353 (7) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v), Loss of Safety Function |
| 2552001004R01 - NRC Website | |
text
NMC Committed to NuclearMExce Palisades Nuclear Plant Operated by Nuclear Management Company, LLC March 14, 2002 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 DOCKET 50-255 - LICENSE DPR PALISADES NUCLEAR PLANT LICENSEE EVENT REPORT 01-004-01, CONTROL ROD DRIVE MECHANISM UPPER HOUSING ASSEMBLY CRACK INDICATIONS Attached is supplemental Licensee Event Report (LER) 01-004-01. This supplemental LER augments the information provided in LER 01-004, which was submitted on August 20, 2001.
SUMMARY OF COMMITMENTS This letter contains two new commitments as follows:
- 1.
Future examinations of the butt welds on the new Control Rod Drive Mechanism upper housings will be performed by ultrasonic examination from the outer diameter surface.
- 2.
Examination of selected incore instrumentation reactor head nozzle-to-flange butt welds will be performed during the next refueling outage.
Paul A. Harden Director, Engineering CC Administrator, Region 1II, USNRC Project Manager, NRR, USNRC NRC Resident Inspector - Palisades Attachment 27780 Blue Star Memorial Highway
- Covert, Ml 49043 Telephone: 616.764.2000
NRC FORM 366 U.S. NUCLEAR REGULATORY APPROVED BY OMB NO. 3150-0104 EXPIRES 6-30-2001 (1-2001)
COMMISSION Estimated burden per response to comply wth this mandatory information collection request:
50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br />. Reported lessons learned are incorporated into the licensing process and fed back to industry. Send comments regarding burden estimate to the Records Management Branch (T-E6), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by intemet LICENSEE EVE" NT REPORT (LER) e-mail to bjsl@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, LICE SEE EV N RT NEOB-10202 (3150-0104), Office of Management and Budget, Washington, DC 20503. If (See reverse for required number of a means used to impose information collection does not display a currently valid OMB control digits/characters for each block) number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
FACILITY NAME (1)
DOCKET NUMBER (2)
PAGE (3)
NUCLEAR MANAGEMENT COMPANY 05000255 1 OF 6
PALISADES NUCLEAR PLANT TITLE (4)
CONTROL ROD DRIVE MECHANISM UPPER HOUSING ASSEMBLY CRACK INDICATIONS EVENT DATE 5)
LER NUMBER (6 REPORT DATE (7)
OTHER FACILITIES INVOLVED (8)
MO DAY SEE YEAR SEQUENTIAL I REV FACILITY NAME DOCKETNUMBER YA YER NUMBER NO MO DAY YEAR 05000 FACILITY NAME DOCKET NUMBER 06 21 2001 2001 004 -
01 03 14 2002 05000 OPERATING THIS REPORT IS SUB3MITTED PURSUANT TO THE REQUIREMENTS OF 10 CF R (Check all that apply) (11)
MODE (9) 3 20.2201 (b) 20.2203(a)(3)(ii) 50.73(a)(2)(ii)(B) 50.73(a)(2)(ix)(A)
POWER 0
20.2201 (d) 20.2203(a)(4) 50.73(a)(2)(iii) 50.73(a)(2)(x)
LEVEL (10) 20.2203(a)(1) 50.36(c)(1)(1)(A) 50.73(a)(2)(iv)(A) 73.71 (a)(4) 20.2203(a)(2)(1) 50.36(c)(1)(ii)(A) 50.73(a)(2)(v)(A) 173.71(a)(5) 20.2203(a)(2)(ii) 50.36(c)(2) 50.73(a)(2)(v)(B)
OTHER S ecify in Abstract below or in 20.2203(a)(2)(iii) 50.46(a)(3)(ii) 50.73(a)(2)(v)(C)
(if more space is required, use additional copies of (If more space is required, use additional copies of (if more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of NRC Form 366A) (17)
FIGURE 2 PALISADES PLANT CONTROL ROD DRIVE MECHANISM MAP Legend [a
No Recordable Indications @ Weld #3 Im Recordable Indications © Weld #3