ML19308E276
| ML19308E276 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/12/1972 |
| From: | Rodgers J FLORIDA POWER CORP. |
| To: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| 740712, NUDOCS 8003240824 | |
| Download: ML19308E276 (9) | |
Text
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- AEC DISTRIBr '53 FOR PART 50 DCCKE MATEin AL 6385
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(TQ!?ORARY FORM)
CONTROL NQ:
FILE:
10:4:
DATE OF LOC DATE REC'D LTR TWX RPT OTTER
.rida Power Corporation Petersburg, Fla. 33733
, J.T. Rodgers 7-12-74 7-15-74 X
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CRIG CC CTIER SENT AEC FDR XXX p Cianhusso 1 signed l
SENT LOCAL PDR _ XXX g
! CLASS UNCU.54 PP.OP It!F0 INPUT NO CYS REC'D DOCKET NO:
XXX XXX 1
50-302 DESCRIPTIO:I:
ENCLOSUPIS:
tr requesting an extension of time for comple-1:n of Crystal River #3............
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1DONO N OVE PLANT NAME:
Crystal River
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FOR ACTION / INFO!""ATION 7-17-74 JB BUTLER (L)
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&%j Power July 12,1974 7
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Mr. A. Giambusso
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Directorate of Licensing
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United States Atomic Energy Commission C
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In Re: Florida Power Corporation Crystal River Unit 3 Nuclear Generating Plant Docket No. 50-302
Dear Mr. Giambusso:
The Florida Power Corporation hereby applies for an extension of time for completion of Crystal River Unit #3 as covered by Provisional Construction Pemit No. CPPR-51, granted on September 25, 1968.
Our construction / testing schedule, updated in March,1974, indicated fuel loading could begin in late February,1975, with earliest commercial operation in April, 1975. A more recent scheduling effort indicates fuel loading would not occur until late March or early April,1975. At the last AEC exit interview, the AEC inspector predicted June,1975 for our fuel loading date.
In August,1972, our schedule indicated an August,1974 fuel loading date.
By reviewing our progress since 1972, (Attachment No.1), we see that numerous major milestone tasks ended up 8,9, and 10 months behind the dates that would have been required for an August,1974 fuel loading. This too would indicate that the fuel loading date would have to be extended 8 to 10 months from August,1974 to April or June,1975.
Based on the above, our estimates of the earliest fuel loading and commercial operation dates are April,1975 and June,1975, respectively.
In order to determine the latest fuel loading and commercial operation dates, a period of six months should be added to the early fuel loading and comercial operation dates. This is warranted since the April, 1975 date is based on optimistic or " success" scheduling, and the pressures that nomally influence a schedule adversely, such as design changes, quality problems, labor problems, equipment failures, testing problems, and material shortages are impossible to predict accurately.
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General Office 3201 Thirty-fourin street soutn. P O Box 14042. st Petersburg, Florida 33733 813-866-5151
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To: Mr. A. Giambusso July 12,1974 Furthermore, this additional 6 months is considered conservative when compared to Arkansas 1 and Three Mile Island 1 and 2, as shown by the following comparison of months from start of reactor building structural concrete, to fuel loading.
CR-3 Ark-1 Ark-2 TMI-l TMI-2 Started str. concrete 7-1970 2-1969 2-1972 8-1968 1-1971 (Reactor Bldg. slab)
Early estimate for 4-1975 6-1974*
8-1976 3-1974*
4-1976 fuel loading Elapsed months 58 64 54 67 63
- Actual Fuel Loading Therefore, our estimates of the latest fuel loading and comercial operation dates are October,1975 and December,1975, respectively.
CAUSES OF SCHEDULE EXTENSION The causes of our schedule extension are numerous and complex, with many, often over-lapping, items involved. Most of these items can be grouped in one of the following general categories.
1.
Items that cause work stoppage Schedule time is lost, and the project completion date extended when work on critical tasks is actually stopped. The most common causes of work stoppages are:
Labor walkouts Shortages of critical materials Inclement weather Delays of this type have been evaluated, and, at the.present time, it appears that work stoppages caused by the above three items alone have resulted in a loss of 93 working days, equivalent to approximately a 4 month schedule exten-sion. These are sumarized as follows:
7-1972 1-1974 thru 1973 thru Total 12-1972 6-1974 l
Labor walkouts 1/2 16 18 1/2 35 i
Material shortage
- 24 1/2 17 41 1/2 (concrete related)
Weather 8 1/2 5
3 16 1/2 Totals 33 1/2 76--
21 1/2 93
- This sumary does not include any allowance for the potential delaying effects of the lack of Type II cemant for 5000 psi concrete during April, May and June of 1974.
1
m To: Mr. A. Giambusso July 12,1974 1.(cont'd)
Other factors that sometime stop or slow down the work are:
Construction equipment failure Shortage of construction equipment or tools Construction accidents Regulatory requirements (OSHA, NEPIA, AEC, EPA)
Thievery Quality Program requirements Shortage of Skilled Werkmen
- 2. Items that add more work The project completion date is extended when new work of a critical nature is added to the project. Common causes of added work are:
A. Design changes B. Design additions C. Underestimating work durations D. Rework for any reason The balance of the schedule extension is attributed to items of this nature.
Specific examples of these items that influenced the schedule during this period are contained in Attachment No. 2.
It should be noted that several of these items still have the potential to further extend the schedule.
Based on the above discussion and the information contained in Attachments 1 and 2, Florida Power Corporation hereby request that Construction Permit CPPR-51 be extended from September 30, 1974 until December 31, 1975.
Sincerely yours,
/
J.T Rodgers Assistant Vice President JTR/csj
m STATE OF FLORIDA
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COUNTY OF PINELLAS )
J.T. Rodgers, being duly sworn, states that he is Assistant Vice President of Florida Power Corporation; that he is authorized on the part of said Company to sign and file with the Atomic Energy Comission this application for renewal of Con::truction Permit; that he has read all of the statements contained in such application and the exhibits attached thereto and made a part thereof; and that all such statements made and matters set forth therein are true and correct to the best of his knowledge, infomation and belief.
N A.T. Rodger Subscribed and sworn to before me, a Notary Public in and for the State and County above named, this 12th day of July, 1974 (SEAL)
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Notary Public Notary Public. State cf Rorida at targe My Commission Expires JULY 9.1974 Notary Public, State of Florida at Large.
My Commission Expires July 9,1978.
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- s ATTACHMENT NO. 1 MILESTONE COMPARISON CHART REQUIRED BY ACTUAL MONTHS AUG.1972 or BEHIND TASK SCHEDULE PRESENT EST.
AUGUST 1972 SCHEDULE e
REACTOR BUILDING Complete Exterior Walls 3/8/73 4/2/73 1
Complete Ring Girder 9/25/73 1/11/74 4
Dome Concrete Pours Complete 12/19/73 8/74 8
Start Installing Tendons 10/23/73 11/5/73 1
Complete Installing Tendons 1/18/74 8/15/74 7
Test Polar Crane 5/8/74 6/10/73 1
Start Erecting Heavy Primary Pipe 4/4/74 8/23/73 4
Start Welding Primary Pipe 4/19/73 9/24/73 5
Complete Welding Primary Pipe 6/29/73 5/1/74 10 INTERMEDIATE BUILDING Complete Concrete Roof Deck 6/20/73 3/8/74 8
Start Main Steam Pipe 6/20/73 3/25/74 9
Start Feedwater Pipe 7/27/73 3/25/74 8
Complete Emergency Feedwater 1/74 11/15/74 10 OTHER Energize Start-up Transfonner 10/26/73 6/29/74 8
i Start Fuel Load 8/74 4/75 8
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ATTACHMENT N0. 2 ITEMS THAT ADD MORE WORK Specific examples of items that contributed to the schedule extension, and increased cost, by adding work are as follows:
Design Changes 1.
Changed seals in hydraulic shock suppressors (snubbers for pipe) 122 for inside Reactor Building returned to vendor for rework, and due to ship to site during July, 1974.
2.
Changed packing for valves in boric acid service.
(576 valves involved). Packing ordered in June,1974.
3.
Extensive re-design of Intermediate Building resulted in new material requirements.
Some, for example, critical anchor bolt assemblies, not yet received.
4.
Changing various main steam pipe hangers in Turbine Building, from standard hangers to heavier hangers.
5.
Changed emergency feedwater piping. Revised drawing issued 5/15/74. Material now on order.
6.
Change air-conditioning duct work that supplies the battery room. Design not yet revised.
7.
Change from dry tendon to greased tendons.
Design Additions 1.
Added Main Steam Isolation Valves, (4) and associated instrumentation, controls pipe supports, and wiring.
2.
Added seismic restraints (over 723) to piping systems. All are not yet received.
3.
Added hurricane walls and water tight doors around each opening into the buildings.
Water tight doors not yet ordered.
4 Additional baseline inspection requirements imposed, since our equipment was l
manufactured, necessitates field inspections of shop work.
5.
det shields for protection of electrical equipment in Intermediate Building.
Material not yet received.
6.
Added 80 hydraulic snubbers, order in March,1974, not yet received.
7.
Added 30 valves, specified in March,1974.
UNDERESTIMATING WORK DURATIONS The time required to accomplish certain major tasks was underestimated. Specific w
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UNDERESTIMATING WORK DURATIONS (cont.)
significant tasks that required more time than was anticipated during the 1972 scheduling effort are listed below. Low productivity and excessive Quality require-ments are often a factor in underestimating work.
1.
Sandblasting and painting the inside of the Reactor Building has already required 50,000 more manhours than was estimated, and this work delays other work.
2.
Erection of the primary loop pipe could not start as early as estimated, due to interference with fonns and shoring required for interior concrete walls.
3.
Welding of the primary loop piping required more time than estimated.
4.
Stress relieving of the primary loop pipe required more time than was estimated.
REWORK 1.
Poor or incorrect application of paint required extensive rework and
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repainting of the following items:
A.
Fuel handling bridge cranes (3)
B.
Primary coolant pump motors (4)
C.
Reactor Building duct work D.
Primary coolant pump motor snubbers (32)
E.
All uninsulated carbon steel pipe in the Reactor Building F.
Letdown coolers G.
Primary coolant pipe restraints H.
Reactor Building elevator I.
Reactor Building structural steel J.
Motor operators on valves K.
Reactor Building cable tray 2.
Misfit of steam generator seismic restraints between steam generators and shield walls caused extensive rework.
3.
Repeat radiography on 900 pipe welds when it was learned that the previous-ly accepted radiographs did not meet code requirements.
4.
Rework over 350 pipe welds that had previously been accepted, but were then rejected as a result of repeating the radiography.
5.
Higher than expected reject rate on the carbon steel primary loop piping resulted in extensive rework, i
6.
Extensive rework of cables entering control room r luired to satisfy cable separation criteria.
7.
Removal of snubbers already erected for return to factory for seal replace-ment.
e
e 8.
Re-grind and re-inspect spent fuel pit weld seams to satisfy surface finish acceptance criteria.
9.
Returned 80 valves to vendor for rework.
- 10. Removing and replacing 50 yards of concrete, rebar, and tendon cond personnel hatch, due to void in concrete first placed.
- 11. Extensive program of valve wall thickness measured by field personnel to prove that valves purchased do, in fact, meet design requirements.
- 12. Re-work of 6 turbine room demineralizers, due to repeated radiographi rejection of welds, resulted in one not yet being received on-site.
Re-work on the site can be partisalarly costly to the schedule resources, (qualified workmen, equipment, material, and space),that should be d since it requires to new work.
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