ENS 41346
ENS Event | |
|---|---|
17:55 Jan 18, 2005 | |
| Title | 24-Hour Condition of License Report for Potential Non-Compliance of the Fire Protection Program |
| Event Description | The notification is being made pursuant to Unit 2 Operating License for potential non-compliance of the Fire Protection Program.
At 12:55 on January 18, 2005 following the review of Operating Experience for Wolf Creek (ENS 41327), it was discovered that the pilot lines to the manual pneumatic actuator pilot lines on the Halon bottles for the Halon System for the Auxiliary Equipment Room were incorrectly piped. In accordance with TRM 3.7.6.4 a continuous fire watch was established in the area. This event resulted in a condition that could have rendered the Halon System for the Unit 2 Auxiliary Equipment Room inoperable during a fire. The Unit 1 Auxiliary Equipment Room Halon System was not affected and remained operable. At this time the cause of this condition is not currently known, and an investigation is ongoing. NRC Resident Inspector was notified of this event by the licensee. HOO NOTE: See Ens # 41326 and 41327 for similar reports.
The notification is being made to retract the ENS 41346 Rev 0 reported on 1/19/05 pursuant to Unit 2 Operating License for a potential noncompliance of the Fire Protection Program. At 12:55 on January 18, 2005 following the review of Operating Experience for Wolf Crook (ENS 41327), it was discovered that the pilot lines to the manual pneumatic actuator on the main and reserve Halon cylinders for the Unit 2 Auxiliary Equipment Room Under Floor Halon System were incorrectly piped. In accordance with TRM 3.7.6.4, a continuous fire watch was established in the area.. Immediately following the event, it was believed that the condition could have rendered the Unit 2 Auxiliary Equipment Room Under Floor Halon System inoperable during a fire. On January 19, 2005 Limerick corrected the piping to meet the vendor design for the manual-pneumatic actuators associated with the Unit 2 Auxiliary Equipment Room Under Floor Halon System. On January 26, 2005 Chemetron performed a functional test of the Halon System for Callaway with the incorrect pilot line piping and discovered that Halon injected properly with a 2 second delay (See IEN 2005-001). Callaway had a similar Halon system configuration as Limerick Unit 2 Auxiliary Equipment Room Under Floor Halon System (same make and model number manual-pneumatic actuators and cylinder heads). An evaluation of the test report concluded that the Limerick Unit 2 Auxiliary Equipment Room Under Floor Halon System would have actuated in the event of a fire. In conclusion, despite the pilot line piping error, the Unit 2 Auxiliary Equipment Room Under Floor Halon System would have remained operable and would have completed it's suppression function during a fire. Therefore, there was no violation of the Unit 2 Operating License Section 2.C.(3) for the Fire Protection. The licensee will notify the NRC Resident Inspector. Notified R1DO (E. Coby). |
| Where | |
|---|---|
Limerick  Pennsylvania (NRC Region 1) | |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+17.22 h0.718 days <br />0.102 weeks <br />0.0236 months <br />) | |
| Opened: | Mark Crim 11:08 Jan 19, 2005 |
| NRC Officer: | John Mackinnon |
| Last Updated: | Feb 16, 2005 |
| 41346 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 564642023-02-16T12:05:00016 February 2023 12:05:00
[Table view]Other Unspec Reqmnt, 10 CFR 50.73(a)(1), Submit an LER 60 Day Notification for an Invalid Actuation of the Emergency Service Water System ENS 417362005-05-31T14:31:00031 May 2005 14:31:00 Other Unspec Reqmnt Operation at Greater than Licensed Power Lever (106% Rated) Due to Recirc Pump Motor Generator Set Fault ENS 414152005-02-17T05:00:00017 February 2005 05:00:00 Other Unspec Reqmnt Missing Calibration Source ENS 413462005-01-18T17:55:00018 January 2005 17:55:00 Other Unspec Reqmnt 24-Hour Condition of License Report for Potential Non-Compliance of the Fire Protection Program ENS 410432004-09-15T20:00:00015 September 2004 20:00:00 Other Unspec Reqmnt Potential Violation of License Condition - Operation Above Licensed Power Limit 2023-02-16T12:05:00 | |