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U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
04/29/2015 - 04/30/2015
** EVENT NUMBERS **
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| Power Reactor |
Event Number: 50998 |
Facility: HATCH
Region: 2 State: GA
Unit: [1] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STEVE BRUNSON
HQ OPS Officer: CHARLES TEAL |
Notification Date: 04/20/2015
Notification Time: 21:26 [ET]
Event Date: 08/07/2014
Event Time: 17:07 [EDT]
Last Update Date: 04/29/2015 |
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION |
Person (Organization):
ALAN BLAMEY (R2DO) |
| Unit |
SCRAM Code |
RX CRIT |
Initial PWR |
Initial RX Mode |
Current PWR |
Current RX Mode |
| 1 |
N |
Y |
100 |
Power Operation |
100 |
Power Operation |
| 2 |
N |
Y |
90 |
Power Operation |
90 |
Power Operation |
Event Text
THIS IS A CONTINUATION OF EN #50351
* * * UPDATE FROM STEVE BRUNSON TO CHARLES TEAL ON 4/20/15 AT 2126 EDT * * *
"During an expanded scope inspection, deficiencies in the following areas were observed that caused the affected barriers to be considered nonfunctional:
- A gap ¬" wide, 1" tall, and 6" deep was found at penetration 1Z43H594D on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire Area 1020)
- Near penetration 1Z43J837D, and approximately 12" south and above 1Z43H837D, gaps were observed in the mortar joint between CMU on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire Area 1020)
- A triangular gap 1" wide, 1" tall and 6" deep was found at penetration 1Z43H592D on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire Area 1020)
- A gap 4" tall and 3" wide was found behind Turn Box TB1-1272 which covers penetrations 1Z43H590D, 1Z43H589D, 1Z43H588, and 1Z43H587D on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire Area 1020)
- At the architectural joint between the vertical wall to the horizontal floor/ceiling assembly above door 1C-22, above and to the south of 1Z43H1105D, a gap was observed approximately ¬" tall, 3" wide, and 6" deep on the west wall of the U1 East Cableway Foyer (separating Fire Area 1105 and Fire Area 0014K)
- Gap between the grout and the conduit of penetration 1Z43H778D approximately ¬" tall x 1.5" wide x 6" deep on the east wall of the Unit 1 130' Elevation Control Building Working Floor Hallway (separating Fire Area 0014K and Fire Area 1105)
"The nonconforming conditions observed for the affected fire penetrations and fire barriers were identified as affecting both safe shutdown paths for Unit 2. Compensatory measures were already in place in accordance with the plant's Fire Hazard Analysis (FHA) as a result of previous conditions involving degraded barriers in the same fire areas and will remain in place until the fire barriers are repaired. The presence of the compensatory measures in addition to portable fire protection equipment located in adjacent areas ensure the safe shutdown paths are preserved until the degraded conditions are repaired.
"CR 10058276; CR 10058278
"The following deficiencies were also observed causing the affected penetrations to be considered nonfunctional:
- A gap ¬" wide, 1" tall, and 6" deep was located at penetration 1Z43H532D on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire Area 0014M)
- A gap 1/8" wide, 1" tall and 6" deep was located at penetration 1Z43H780D on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire 0014M)
- A gap ¬" wide, 1" tall, and 6" deep was located at penetration 1Z43H781D on the west wall of the U1 East Cableway (separating Fire Area 1104 and Fire 0014M). A ¬" x «" defect was also identified at penetration 1Z43H781D on the east wall of the Men's Restroom in the Control Building (separating Fire Area 0014M and Fire Area 1104)
"The nonconforming conditions observed for the affected penetrations were identified as affecting both safe shutdown paths for Unit 1 and Unit 2. Compensatory measures were already in place in accordance with the plant's Fire Hazard Analysis (FHA) as a result of previous conditions involving degraded barriers in the same fire areas and will remain in place until the fire barriers are repaired. The presence of compensatory measures in addition to portable fire protection equipment located in adjacent areas ensures the safe shutdown paths are preserved until degraded conditions are repaired.
"CR 10058277
"The expanded scope inspection activity is continuing and this and any subsequent similar condition(s) that meets the reporting requirements will be included in an ENS Update Report as required and will be documented in a revised LER at the end of the inspection activity."
The licensee has notified the NRC Resident Inspector. Notified R2DO (Blamey).
* * * UPDATE FROM SCOTT BRITT TO DONG PARK ON 4/23/15 AT 1654 EDT * * *
"During an expanded scope inspection, deficiencies in the following areas were observed that caused the affected barriers to be considered nonfunctional:
- A gap 1/4" wide, 1" tall and 7" deep was found at penetration 1Z43H1138D on the east wall of the U1 RPS MG Set Room (separating Fire Area 1013 and Fire Area 0040). No seal material was seen between the sleeve and the cinderblock on the north side of penetration.
- A void 1" tall, 1" wide, and 7" deep was found in the south upper corner under a concrete beam at column line T12 above penetration 1Z43H941D on the east wall of the U1 RPS MG Set Room (separating Fire Area 1013 and Fire Area 0040).
- At penetration 1Z43H1139D, it appears that combustible neoprene insulation is used around the pipe within the plane of the west wall of the Vertical Cable Chase Room (separating Fire Area 0040 and Fire Area 1013). Combustible materials would not be part of a rated pen seal.
- A gap 1" wide, 1" tall and 7" deep was observed at penetration 1Z43H1138D on the west wall of the Vertical Cable Chase Room (separating Fire Area 0040 and Fire Area 1013).
"The nonconforming conditions observed for the affected fire penetrations and fire barriers were identified as affecting both safe shutdown paths for Unit 1. Compensatory measures were already in place in accordance with the plant's Fire Hazard Analysis (FHA) as a result of previous conditions involving degraded barriers in the same fire areas and will remain in place until the fire barriers are repaired. The presence of the compensatory measures in addition to portable fire protection equipment located in adjacent areas ensures the safe shutdown paths are preserved until the degraded conditions are repaired. The expanded scope inspection activity is continuing, and this and any subsequent similar condition(s) that meets the reporting requirements will be included in an ENS Update Report as required and will be documented in a revised LER at the end of the inspection activity.
"CR 10060228"
The licensee will notify the NRC Resident Inspector. Notified R2DO (Blamey).
* * * UPDATE FROM STANLEY STONE TO DONG PARK ON 4/27/15 AT 2047 EDT * * *
"During an expanded scope inspection, deficiencies in the following areas were observed that caused the affected barriers to be considered nonfunctional:
-An opening in the grout 1/4" wide, 1/2" tall and over 7" deep was found between the wall and the outside sleeve for penetration 2Z43H028D on the west wall of the U2 Transformer Room (separating Fire Area 2019 and Fire Area 2016).
-A 1/4" diameter hole in the grout approximately 2.5" deep was found above conduit 2MI2128 on the west wall of the U2 Transformer Room (separating Fire Area 2019 and Fire Area 2016).
"The nonconforming conditions observed for the affected penetration and fire barrier were identified as affecting both safe shutdown paths for Unit 1 and Unit 2. Compensatory measures were already in place in accordance with the plant's Fire Hazard Analysis (FHA) as a result of previous conditions involving degraded barriers in the same fire areas and will remain in place until the fire barriers are repaired. The presence of the compensatory measures in addition to portable fire protection equipment located in adjacent areas ensures the safe shutdown paths are preserved until the degraded conditions are repaired. The expanded scope inspection activity is continuing, and this and any subsequent similar condition(s) that meets the reporting requirements will be included in an ENS Update Report as required and will be documented in a revised LER at the end of the inspection activity.
"CR 10061830"
The licensee notified the NRC Resident Inspector. Notified R2DO (Blamey).
* * * UPDATE FROM PAUL UNDERWOOD TO DONG PARK ON 4/28/15 AT 1640 EDT * * *
"During an expanded scope inspection, deficiencies in the following areas were observed that caused the affected barriers in the Unit 2 Control Building 130' elevation to be considered nonfunctional and represented degraded conditions of penetrations through the wall separating the Unit 2 Switchgear Access Hallway - Fire Area 2014, from the U2 West 600 V Switchgear Room - Fire Area 2016.
"The following conditions were located on the south wall of the Unit 2 Switchgear Access Hallway (Fire Area 2014).
1. An opening between the conduit and the wall 1/4" wide, 2" long and probed to be at least 2 1/2" deep was identified for penetration 2Z43H668D. A similar condition exists for this penetration on the opposite side of the wall in Fire Area 2016.
2. An opening between the conduit and the wall 1/4" wide, 1/2" long and probed to be at least 3" deep was identified for penetration 2Z43H667D. A similar condition exists for this penetration on the opposite side of the wall in Fire Area 2016.
The following conditions were located on the opposite side of the same wall. This is the north wall of the U2 West 600V Switchgear Room (Fire Area 2016):
3. An opening between the conduit and the wall 1/8" wide, 1" long and probed to be at least 4" deep was identified for penetration 2Z43H668D.
4. An opening between the conduit and the wall 1/8" wide, «" long and probed to be at least 3" deep was identified for penetration 2Z43H667D.
5. An opening between the conduit and the wall 2 1/2" wide, 2 1/2" long and probed to be at least 4" deep was identified around the 2" continuous run conduit located above cable tray penetration 2Z43H031D.
6. An opening between the conduit and the wall 1/4" wide, 3/4" long and probed to be at least 6" deep was identified above a 3/4" continuous run conduit (first of three) located at the ceiling near column line TE.
7. An opening between the conduit and the wall 1/4" wide, 1/2" long and probed to be at least 6" deep was identified above a 3/4" continuous run conduit (second of three) located at the ceiling near column line TE.
8. An opening between the conduit and the wall 1/4" wide, 3/4" long and probed to be at least 5" deep was identified above a 3/4" continuous run conduit (third of three) located at the ceiling near column line TE.
"The nonconforming conditions observed for the affected penetration and fire barrier were identified as affecting both safe shutdown paths for Unit 2. Compensatory measures were already in place in accordance with the plant's Fire Hazard Analysis (FHA) as a result of previous conditions involving degraded barriers in the same fire areas and will remain in place until the fire barriers are repaired. The presence of the compensatory measures in addition to portable fire protection equipment located in adjacent areas ensures the safe shutdown paths are preserved until the degraded conditions are repaired. The expanded scope inspection activity is continuing, and this and any subsequent similar condition(s) that meets the reporting requirements will be included in an ENS Update Report as required and will be documented in a revised LER at the end of the inspection activity.
"CR 10062254"
The licensee notified the NRC Resident Inspector. Notified R2DO (Ehrhardt).
* * * UPDATE FROM PAUL UNDERWOOD TO DANIEL MILLS ON 4/29/15 AT 1804 EDT * * *
"During an expanded scope inspection, deficiencies in the Unit 2 Control Building 130 foot elevation were observed that caused the affected barriers to be considered nonfunctional and represented degraded conditions of penetrations through the wall separating the Unit 2 West DC Switchgear Room 2A (Fire Area 2018) and the Unit 2 Switchgear Access Hallway (Fire Area 2014).
"The following conditions were located on the west wall of the Unit 2 Switchgear Access Hallway (Fire Area 2014).
1. An opening between the conduit and the wall ¬ inch wide, 1 inch long and probed to be greater than 2 inch deep, was identified for penetration 2Z43H673D.
2. There is insufficient masonry material to fill the full depth of the wall above the ductwork that passes through penetration 2Z43H032D. This deficiency affects a small area on the south side of the ductwork and penetrations 2Z43H789D, 2Z43H790D, and 2Z43H791D.
3. An opening between the conduit and the wall ¬ inch wide, 1 inch long and probed to be 4 inch deep was identified for penetration 2Z43H671D. A similar condition exists for this penetration on the opposite side of the wall (see Item 5 below).
"The following conditions were located on the east wall of the Unit 2 West DC Switchgear Room 2A (Fire Area 2018).
4. There are openings between the conduits and the wall ¬ inch wide and 1 inch long for penetrations 2Z43H789D, 2Z43H790D, and 2Z43H791D. These penetrations are affected in Item 2 above.
5. An opening between the conduit and the wall 1 inch wide, 1 inch long and probed to be greater than 6 inch deep, was identified for penetration 2Z43H671D.
6. An opening between the conduit and the wall ¬ inch wide, 1 inch long and probed to be at least 2 inch deep, was identified for penetration 2Z43H673D.
7. An opening between the conduit and the wall ¬ inch wide, 1 inch long and probed to be at least 2 « inch deep, was identified for penetration 2Z43H676D.
"The nonconforming conditions observed for the affected penetrations were identified as affecting both safe shutdown paths for Unit 2. Compensatory measures were already in place in accordance with the plant's Fire Hazard Analysis (FHA) as a result of previous conditions involving degraded barriers in the same fire areas and will remain in place until the fire barriers are repaired. The presence of the compensatory measures in addition to portable fire protection equipment located in adjacent areas ensures the safe shutdown paths are preserved until the degraded conditions are repaired. The expanded scope inspection activity is continuing, and this and any subsequent similar condition(s) that meets the reporting requirements will be included in an ENS Update Report as required and will be documented in a revised LER at the end of the inspection activity.
"CR10062955"
The licensee notified the NRC Resident Inspector. Notified R2DO (Ehrhardt). |
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