ML20115A714
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'(I.:C JUNE, 1980 SCHEDULE STATUS TO ILLINOIS COMMERCE COMMISSION FOR ILLINOIS POWER COMPANY'S CLINTON UNIT NO. 1 PROJECT 8504150511 840606
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.b STATUS
SUMMARY
During the May, 1980 report period, a comparison of performance to the project summary target schedule shows
the most significant slippages were the result of delays in the delivery of permanent plant equipment.
These delivery slippages had principal impact in.the area of electrical work.
Manpower levels continued below those originally. projected.
Overall productivity levels continue to remain above projection both for direct and support labor.
Additional corrective action programs are being developed and considered in hopes of improving recently identified critical paths.
Supplemental Information Information regarding two events that occurred in the early part of June relating to licensing problems and site damage caused by a storm is discussed below.
1.
Licensing Problems:
a.
NRC Caseload Forecast Panel Site Visit:
A site visit was scheduled for June 24, 1980.
The-work-load of the NRC. Staff toward docketing the Clinton operating license application by the.first week of July necessitated postponement of the site visit until the docketing effort is completed.
Tentatively, the site visit is rescheduled for late July or early August, 1980.
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b.
Response to the Three Mile Island Accident:
During the past month, the Nuclear Regulatory Commission (NRC) issued the "NRC ACTION PLAN
- DEVELOPED AS A RESULT OF THE TMI-2 ACCIDENT,"
NUREG-0660, May 1980.
Illinois Power has estab-lished a Steering Committee to direct specific responses to 'those portions of the NRC Action
, Plan which apply to t e Clinton Plant.
These h
I responses will be incorporated into the Final Safety Analysis Report for the Clinton Power J
Station as part of the nuclear licensing process.
As each response action is developed, cost'and schedule estimates for required modifications Y
will be prepared and the work will be authorized.
t 2.
- Site Damage Caused by Storm:
Tornado-like winds at the Clinton plant construction site damaged cranes and structures in the early hours of Sunday, June 15.
No one was injured and no severe structural damage was done to buildings.
High winds apparently whipped cables of two. cranes into,,the walls and roofs of power plant buildings-before the crane booms collapsed and fell onto structures.
A third crane (Big Red) was also damaged.
The high winds also damaged several temporary buildings and overturned the trailers 1
of a number of semi-trucks parked on site.
Damage to
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the power plant buildings included:
- An area of turbine room roof, approximately.40 feet by 50 feet, partially peeled away;
- Two I-beams in the ceiling of the fuel pool building twisted when a 200 foot section of crane boom fell there; and
- Two six foot sections of concrete parapet atop the auxiliary building ripped out by a falling boom along with damage to a 10 foot by 20 foot area of the roof.
Also, outside the power plant building a 250,000 gallon condensate tank was moved two feet on its concrete foundation.
There was considerable other damage of a lesser nature b
such as duct work blown about, damage to temporary buildings and general disruption of light construction material.
Preliminary estimates of damage are about $1.25 million to repair the cranes and $1 million to repair structures.
The storm's damage should have minimal effect on the plant's schedule as debris was removed and repair work started on cranes quickly.
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g CONTAINMENT
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'On May 20, 1980,_ concrete was placed to complete the exterior Nv concrete' wall up to the spring line.
The placement of reinforcing steel.for the dome section of the exterior containment wall is in progress.- The final two sections of the dome have been prefabricated and are leveled on the ground where spray header hangers and piping are being installed.
Welding of the upper fuel pool liners'was completed this month and placement of. concrete for walls between' fuel' pools is under way.
One of three pedestal cranes was removed from inside the contain-ment this month, thus opening additional areas outside the drywell for i
preparations leading to mechanical and electrical system installations.
.The elevation 737 structural platform was completed this month.
Mechanical work outside the drywell continues on mainsteam and k.5 feedwater guard pipe and bellow assemblies, fuel pool cleanup piping, high' pressure core spray piping, closed cooling water piping, and containment vent piping.
Electrical work outside the drywell continues with the installation-of seismic cable tray hangers and conduit hangers.
However, in areas 2 and 4, many cable tray hangers have been placed on engineering " hold,"
virtually stopping electrical construction in the west half of the i
containment.
This " hold" was instituted due to the discovery of inter-
-ference between cable tray and control rod drive (CRD) tubing.
Priority was given to the CRD routing thus necessitating redesign of the
' cable tray and its hangers.
Lighting and communication conduit and cabling also continues outside the drywell.
l Inside the drywell, the installation of structural steel
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and grating continues.
Mechanical installation has escalated and now includes reactor equipment drains, high pressure core spray, and low pressure core spray piping, as well as reactor recirculation discharge and suction piping., Lighting and communication conduit installation has been discontinued inside the drywell, pending the release of additional drawings.
Under the reactor pressure vessel the installation of control rod drive housing and hangers continues along with the installation t
of hydraulic lines and the rework of reactor feedwater nozzels.
FUEL BUILDING The erection of structural steel is now well under way and
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should be coupleted in June.
The fuel building overhead crane C
is being preassembled on the ground and will be set the first week of June.
This crane should be operational by mid July.
The stripping of the elevation 755 slab has released large areas for piping and electrical installation.
Large and small bore piping are well under way on elevations 712 and 737.
Electrical work in this building is principally concentrated at elevation 712 where cable tray hangers near completion.
The installation of cable tray follows closely behind the hangers, and conduit erection is now under way.
AUXILIARY BUILDING Design revision, primarily from the vendor, continue to effect the installation of gas boundary steel on all elevations.
This problem is beginning to impact the installation of electrical
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'. penetrations in the containment building.
All rails are in place for both the 4,160 volt and the 6,900 volt switchgear on elevations 762 feet and 781 feet.
Concrete has been placed'for the finished floors around these equipment-One switchgear of each voltage has been set in place, areas.
and the remaining two switchgear will be set as they are delivered to the site.
The installation of piping hangers, and large and small bore: piping, are now under way at all elevations of this building.
Electrical work for the installation of bus duct, cable tray hangers, cable tray, and conduit continue in the lower four elevations of this building.
Cable pulling is also unded way in the auxiliary building.
TURBINE BUILDING With the arrival and setting of the regenerator and desiccant dryers, all limited access equipment on elevations 781 in the heater bay is in place.
To date, 34 of 36 wallpours in the heater bay have been made with the remaining two scheduled in early -
July.
Additionally, three of six labyrinth roofs have been-completed.
All four combined intermediate valves (CIV) are now in place on temporary support frames.
Mainsteam and feedwater pipe erection is under way in and around the steam tunnel.
All piping activities, hanger instdllation, large and small bore piping installation, welding, and the installation of instrumentation and controls continue throughout the building.
Condenser tubing is currently 59% completed with over 31,000 g,
tubes installed.
Extraction steam piping within the condenser
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Cable tray erection nears completion in this building with' the installation of conduit and the pulling of wire following as appropriate.
CONTROL BUILDING Work continues above the elevation 800 slab in support of the set of Power Generaton Control Complex (PGCC) cabinets in late summer.
Recent revisions to conduit design in this area have caused concern over future schedule impact.
Both cable tray and piping erection are currently on schedule at this elevation.
Throughout the building bulk commodity installation continues for large and small bore piping, cable tray and conduit, instru-(y mentation and equipment, and wire and cable pulling.
DIESEL GENERATOR BUILDING The installation of permanent roofing was completed for this l
building during May.
Installation of piping and electrical commodities in this non-critical building continue at a slow pace because available manpower is being concentrated in more critical areas.
RADWASTE BUILDING Civil work continues in this building with equipment foundations,
' concrete block walls, and finished floor slabs being installed in support of early system turnovers.
Vertical rails are being installed as the preliminary step for the installation of the two elevators in this building.
Piping and electrical installation
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continues, and is on a two shift basis where necessitated by schedule requirements.
SCREENHOUSE Work is. progressing in this building with large pipe and cable tray virtually complete.
Small pipe and conduit installation 4
is being pursued as required to support early systemfturnovers.
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Installation of traveling screens was completed this month and work continues on the installation of hoods.
Final alignment is in progress on electric and diesel driven fire pumps.
SERVICE BUILDING The excavation for the basement' of the service building is complete.
Concrete placement for a mud slab is under way and
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sufficiently complete to support shaft erection of the building's L
elevator.
The installation of reinforcing steel.for the basement slab will commence during June.
4 YARD All underground processed pipe west of the power block is now complete with storm sewers and manholes in this area yet to be done.
The electrical ducts'in this area, will have concrete placed in early June to release tower foundation work.
The unit auxiliary transformers are set and assembly and dressout is continuing.
The Emergency Core Cooling Spray (ECCS) pipe is installed on two underground elevationn.
The lower level of piping is installed and welded out.
Hydrostatic testing of this elevation of piping will commence in June.
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LABOR FORCE During May, the average work force consisted of:
Labor Force Baldwin Associates. Subcontractor Total Manual 2,912 179 3,091 Nonmanual 546 25 571 Total 3,458 2g 3,662 C
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