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| {{Adams
| | #REDIRECT [[05000346/LER-1980-066-03, /03L-1:between 800829 & 0921,doors to Spent Fuel Pool Area Blocked Open on Nine Occasions.Caused by Personnel Error on Part of Const Workers.Two Memos Issued to Reinforce Special Order 88-1 Previously Issued]] |
| | number = ML19347B118
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| | issue date = 09/26/1980
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| | title = /03L-0:on Eight Occasions Between 800829 & 800920, Doors Were Found Open Resulting in Reduced Capacity of Emergency Ventilation Sys to Maintain Spent Fuel Pool Area at Required Negative Pressure.Caused by Personnel Error
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| | author name = Melstad K
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| | author affiliation = TOLEDO EDISON CO.
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
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| | docket = 05000346
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| | license number =
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| | contact person =
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| | document report number = LER-80-066-03L, LER-80-66-3L, NUDOCS 8010010597
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| | package number = ML19347B115
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| | document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
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| | page count = 3
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| }}
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| {{LER
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| | Title = /03L-0:on Eight Occasions Between 800829 & 800920, Doors Were Found Open Resulting in Reduced Capacity of Emergency Ventilation Sys to Maintain Spent Fuel Pool Area at Required Negative Pressure.Caused by Personnel Error
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| | Plant =
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| | Reporting criterion =
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| | Power level =
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| | Mode =
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| | Docket = 05000346
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| | LER year = 1980
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| | LER number = 66
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| | LER revision = 3
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| | Event date =
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| | Report date =
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| | ENS =
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| | abstract =
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| }}
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| =text=
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| {{#Wiki_filter:U.S. N'JCLEAR REGULATORY COMMISSION C'RC FORM 366 87 77)
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| LICENSEE EVENT REPORT CONTROL BLOCK: l l
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| o 1 8 9 LICENSEE CODE 14 15 LICENSE NUMBEH 26 26 LICENSE TYPE JO 57 CAT bd CON'T L l@ 0l 5 l 0 l - l 0 l 3 l 4 l 6 @l 0 l 8 l 2 l 9 l 8 l 0 l@l 0 l 9 l 2 l 6 l 8 l 0 "E
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| 60 61 DOCKET NOVSER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o l 2 ] l (NP-33-80-79) On eight occasions between 8/29/80 and 9/20/80, operators making plant l
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| [o l 3 ] l tours have found doors blocked open. These deers are part of the negative pressure l
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| [TTTI I boundary for the spent fuel pool area. This causes a reduction in the capacity of thel lo i s,l l Emergency Ventilation System (EVS) to maintain the area at its required negative pres-l o6 lsure. Therefore, the station entered the action statement of T.S. 3.9.12.
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| There was l l no danger to the public or station personnel. There were no operations in the pool l o 7 l which involved the movement of fuel or loads above the pool.
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| I o g 7
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| 8 9 DE CODE SUeC E COMPON ENT CODE SU8C dE S
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| o 9 7
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| 8 9
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| 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION
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| _ EVENT YEAR REPORT NO.
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| CODE TYPE NO.
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| 30 38 32 EN ACT ON O PiANT 4E HOURS 22 S 8 iT POR 9
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| 33 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h li l o l l The cause is personnel error on the part of construction workers on site.
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| The doors l
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| [i li l l are heavily traveled with much equipment being moved in and out.
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| However, the doors I
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| l are marked with signs indicating the restriction from blocking open the doors.
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| Two I | |
| i 2 g l memos were issued to reinforce Special Order 88-1 previously issued.
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| i i 4 I
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| I 80 7
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| 8 9 ST S
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| % POWER oTHER STATUS IS O RY DISCOVERY DESCRIPTION
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| d@l Plant Tour l
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| l NA l
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| 8 9 10 13 44 42 80 PERSONNEL EXPOSURES NUU8f R TYPE
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| ==DESCRIPTION==
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| 10101 ol@LZ_J@l NA l
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| i 7 PE RSOwE L iN>u'A ES OESCRIPTION@
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| NUVRER 10101 ol@l NA l
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| i a 7
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| 8 9 11 12 80 LOSS oF OR DAMAGE TO FACILITY TVPE DE SCRIP TION LZ_j@l NA l
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| 8 9 to 80 LN h] ESCRIPTION ISSUE D
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| : 2 o f DIRs %0'-147, 'f4,151, 3g,0 419-2 9-5000, Ext. 299 9
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| PHONE:
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| 3 L135m1A15M^H, fF PREPARER
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| TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWER STATION UNIT ONE SUPPLEMENTAL INFORMATION FOR LER NP-33-80-79 DATE OF EVENT: August 29, 1980 - September 20, 1980 FACILITY: Davis-Besse Unit 1 Spent fuel pool negative pressure boundary doors left
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| . IDENTIFICATION OF OCCURRENCE:
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| open The unit was in Mode 5 with Power (MWT) = 0 and Conditions Prior to Occurrence:
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| Load (Gross MWE) = 0.
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| Description of Occurrence: On eight occasions between August 29, 1980 and September The doors were part 20, 1980, operators making plant tours found doors blocked open. The list includes:
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| of the negative pressure boundary for the spent fuel pool area.
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| 29, 1980 (fuel handling area - 585' elevation), door door 306 at 0400 hours on August 29, 1980 (fuel handling area - 585' elevation), door 400 306 at 1200 hours on August at 2100 hours on September 2, 1980 (auxiliati building - southwest stairway - 603' olevation), door 406 at 1130 hours on September 5, 1980 (fuel handling access corridor -
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| 603' elevation), door 400 at 0911 hours on September 6, 1980 (auxiliary building -
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| southwest stairway - 603' elevation), door 302 at 1246 hours on September 6. 1980 (auxiliary building - southwest stairway - 585' elevation), door 306 at 0310 hours on September 9,1980 (fuel handling area - 585' elevation), and door 406 at 0430 hours on September 20, 1980 (fuel handling access corridor - 603' elevation).
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| In each case, had the Emergency Ventilation System (EVS) been needed, the blocked open doors would have reduced the ability of the system to maintain the storage pool area at a negative prcasure of 21/8 inch water gauge relative to the outside atmosphere Therefore, the system had entered the action statement of during system operation.
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| Technical Specification 3.9.12 which would have required the suspension of any opera-tions involving the movement of fuel within the storage pool or crane operations with loads over the pool had there been any in progress.
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| The cause of the findings is personnel Designation of Apparent Cause of Occurrence:
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| error in disregarding signs posted on~the doors. The signs indicate the door must remain closed and explain that anyone needing to block the doors must first contact These doors became important during this first refueling outage the Shift Supervisor.
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| With irradiated fuel in the when irradiated fuel was placed in the spent fuel pool.These doors have been heavily pool, the spent fuel pool EVS must now be operable.
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| traveled during this outage with many outside construction people on site moving equip-ment through these doors. These doors were apparently blocked open to make it easier to move equipment.
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| There was no danger to the health and safety of the public Analysis of Occurrence:
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| There were no fuel handling operations being conducted dur-or to station personnel.
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| ing this time nor any crane operations with loads over the storage pool.
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| LER #80-066
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| TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWER STATION UNIT ONE PAGE 2 SUPPLEMENTAL INFORMATION FOR LER NP-33-80-79
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| ==Corrective Action==
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| In all of the above cases the doors were closed and the Shift Supervisor notified.
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| Special Order No. 88-1 was written August 14, 1980 and dis-tributed to all station perscanel to inform them of the importance of the spent fuel pool area doors. To reinfoce this order, two additional memos were issued.
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| M80-2078 was issued to all Toledo Edison personnel and construction supervisors and foremen emphasizing the proper use of the doors, and M80-2079 was issued to all security with the same information.
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| A similar finding was reported in Lir insee Event Report NP-33-80-56 Failure Data:
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| (80-047).
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| LER #80-066
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| ~
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| }}
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| {{LER-Nav}}
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