ML052030098
| ML052030098 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 05/24/2004 |
| From: | Nuclear Management Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2004-0282 | |
| Download: ML052030098 (2) | |
Text
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DAY Point Beach Refueling Outage Edition a "NWTERI 51 tk..
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'IN May 24, 2004 CONTACT INFORMATION Control Room Emergency- x2911 EMT Pager 6442 Work Control Center - x6703 OCC - x 7190 - Option I Lessons Learned - x7190 - Option 2 Plant Status - x7190 - Option 3 Accomplishments
- Drained RCS to 70% Reactor Vessel Level
- Replaced RV Head O-Rings
- Set Reactor Vessel Head
- Drain RCS to 22% Reactor Vessel Level (Midloop)
- Nozzle Dam Removal
- Reactor Head Penetration #26 Relief Request Issues
- Upper Cavity Decon
- Primary Manway Installation
- Exit Midloop and Reduced Inventory Orange Path
- Remove Cavity Seal Ring
- Commence Reactor Head Assembly Personnel Last 24 Hours Outage to Safety _______ Date
- Recordable - 0 Recordable - 11 rz- Disabling - 0 Disabling - 0
- OSHA Recordable - Back strain.
I .
a 24 Hours Outage to Date Intormatniontntle record wasdetd inaccordance vMth fthFreedom Of kIrorM85ofl ALARA1.034 74.083 R Act exempb"Pf 4'0 Dose as of the end of Day 49 y ig
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pl 1 May 24, 2004 OUTAGE GOALS NUCLEAR SAFETY GOAL ACTUAL HUMAN PERFORMANCE GOAL ACTUAL PERFORMANCE l_GOAL_l ACTUAL_
Unplanned orangelred paths None None Security Violations s 12 loggable events 3 Reactor trips (either unit) None None Station human performance dock None 4 resets None_____4 Safeguards actuation (either unit) None None Rework s 1% On Goal Loss of shutdown cooling None None SCHEDULE PERFORMANCE Outage Duration Loss of Rx vessel level control None None (excludes extensions due to s 30 days Off Goal extended head or BMI inspections)
INDUSTRIAL SAFETY Mod Implementation 1GO% of Rev 0 On Goal PERFORMANCE
> 85% schedule Lost time accidents None None Schedule Compliance compliance with Off Goal outage milestone Personnel injuries (OSHA recordable) None 1 Emergent work (during s2% late additions Implementation) s 5%Emergent On Goal RADIOLOGICAL PERFORMANCE Scope ____ ____
Complete 2 95% of Rev 0 scope On Goal Radiation exposure (Excludes additional 100% of Scheduled dose from any head or BMI repair s 92 R 74.083 R Operator Burdens Operator Burdens On Goal contingencies) . complete Personnel contaminations >5K CPM 10 Post Outage availability 2 150 days of Available at continuous operation a later date Radiological events (defined as unplanned uptake wlassigned dose >10 mrem or s1 event I BUDGETPERFORMANCE BUGTPROM NEoutage Within -2%budget to 0%of IChallenged Seriously dose event based on ED alarms Radmaterial event (defined as any rad 5` event 0 material outside RCA 2 100 CPM)
Human Performance Operating Experience What are Job Observations? OE10173 - Overdrain Of Unit 1 RCS While Draining to the Top of the Hot Legs Job observations take a look at how we are performing work. Some things that people might look for during job Inventory reduction of Unit I reactor vessel, for installation of observations include use of human error reduction tools, Steam Generator (SG) nozzle dams, was being performed.
the presence of obstacles to performance, ability to The RCS had been drained to the 728'6" elevation, 1 foot identify error-likely situations, checking worker skill level, below the vessel flange, per 1C4.1, RCS Inventory Control -
safe work habits, and to verify that expectations are being Pre-Refueling. Preparations were in progress to continue met Job observations are also used to see if the draining in accordance with 1D2, RCS Reduced Inventory ACEMAN Principles are being performed in the field. Operation. The purpose of this procedure is to clear the RCS water from the SG U-tubes, and to drain the reactor vessel down to the tops of the hot legs, the 724'6" elevation.
Due to the cumulative affects of a number of human Safety Snippet performance and procedural adequacy issues, the system was over drained. This necessitated 46 minutes of charging pump operation and the addition of approximately OE12357 January 2001, River Bend - A worker focused 1500 gallons of makeup to establish RCS level at the top of on a moving load and did not pay attention to the the hot legs.
movement of the crane. He ended up being forced Lessons Learned: Supervisory Methods -The against a handrail by the cab of the crane, luckily assigned SRO and NLPERO for the draindown did not resulting only in minor injuries. The entire crew was allocate manpower to ensure that all personnel focused on the load with no one person having oversight Involved with the draindown were in attendance at the of the whole evolution. During crane operations, do we pre-job brief. The SRO in charge of the draindown did designate an individual to "watch the big picture?' not adequately track progress, and lost oversight of the evolution. He became Involved In the discussions, and allowed the draining to recommence prior to level stabilization. Written communications and traininglqualification also contributed to the event.