05000255/LER-2007-007, Fuel Handling Area Ventilation System Inoperable
| ML073320365 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 11/27/2007 |
| From: | Schwarz C Entergy Nuclear Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 07-007-00 | |
| Download: ML073320365 (4) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 2552007007R00 - NRC Website | |
text
Er~tergy Nuclear Operations, Inc.
Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, MI 49043 Tel269 764 2000 November 27,2007 I
0 CFR 50.73(a)(2)(i)(B)
U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Palisades Nuclear Plant Docket 50-255 License No. DPR-20 Licensee Event Report 07-007, Fuel Handlinq Area Ventilation System Inoperable
Dear Sir or Madam:
Licensee Event Report (LER)07-007 is enclosed. The LER describes the inoperability of thefuel handling area ventilation system for a brief period when required during movement of fuel assemblies. The occurrence is reportable in accordance with I
0 CFR 50.73(a)(2)(i)(B).
Summary of Commitments This letter contains no new commitments and no revisions to existing commitments.
Site vice President Palisades Nuclear Plant Enclosure (1 )
CC Administrator, Region Ill, USNRC Project Manager, Palisades, USNRC Resident Inspector, Palisades, USNRC
ENCLOSURE 3 LER 07-007 Fuel Handling Area Ventilation System Inoperable 2 Pages Follow
LICENSEE EVENT REPORT (LER)
(See reverse for required number of digitslcharacters for each block) boundary, causing the fuel handling area ventilation system to be inoperable. The door is estimated to have been open for approximately 10 minutes.
Upon discovery, movement of fuel assemblies was suspended in accordance with Technical Specification (TS) 3.7.12.A, until the door was closed. However, since the fuel handling area ventilation system was inoperable for approximately 10 minutes prior to discovery, the TS Required Action and associated Completion Time to immediately suspend movement of fuel assemblies was not met.
his occurrence is reportable in accordance with 10 CFR 50.73(a)(2)(i)(B) as a condition prohibited by Technical Specifications.
NRL FORM 366A U.S. NUCLEAR REGULATORY COMMISSION (1-2001)
LiCENSEE EVENT REPORT (LER)
TEXT CONTINUATION
EVENT DESCRIPTION
FACILITY NAME (1)
Palisades Nuclear Plant On October 1, 2007, with reactor refueling activities in progress, a door was discovered to be open in the boundary of the fuel handling area ventilation system [VG]. The open door constituted a bypass of the boundary, causing the fuel handling area ventilation system to be inoperable. The door is estimated to have been open for approximately 10 minutes.
05000-255 Upon discovery, movement of fuel assemblies was suspended in accordance with Technical Specification (TS) 3.7.12.A, until the door was closed. However, since the fuel handling area ventilation system was inoperable for approximately 10 minutes prior to discovery, the TS Required Action and associated Completion Time to immediately suspend movement of fuel assemblies was not met.
TEXT (If more space is required, use additional copies of NRC Form 366A) (17)
This occurrence is reportable in accordance with 10 CFR 50.73(a)(2)(i)(B) as a condition prohibited by Technical Specifications.
CAUSE OF THE EVENT
During personnel transition through the doorway, the door stuck open due to interference with the floor and was not verified to re-close following passage.
CORRECTIVE ACTIONS
A description of the occurrence was communicated to site personnel, reinforcing the expectation to verify that doors close properly following passage. The sticking condition will be corrected.
SAFETY SIGNIFICANCE
The safety significance of this occurrence is considered to be minimal. The bounding fuel handling accident does not credit filtration of released fission products by the fuel handling area ventilation system. Analysis has shown that the offsite dose resulting from the bounding accident is within the guidelines of 10 CFR 100.
PREVIOUS SIMILAR EVENTS
Licensee Event Report 05-004, Fuel Handling Area Ventilation Not Properly Aligned During Movement Of lrradiated Fuel Assemblies Licensee Event Report 99-005, Charcoal Filter Not In Service During Movement Of lrradiated Fuel Assemblies