ML20078P633
| ML20078P633 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 11/03/1983 |
| From: | Barnes P COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-36, REF-GTECI-SF, RTR-NUREG-0612, RTR-NUREG-612, TASK-A-36, TASK-OR 7560N, NUDOCS 8311080131 | |
| Download: ML20078P633 (10) | |
Text
x Clonwnonwe:lth Edison l
.) One First National Piaza, Chicago, Illinois I
O' Addr9ss Reply to: Post Office Box 767
(
Chicago, Illinois 60690 November 3, 1983 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Quad Cities Station Units 1 and 2 Supplemental Information to the Resolution of NUREG-0612 " Control of Heavy Loads at Nuclear Power Plants" i
NRC Docket Nos. 50-254 and 50-265 References (a):
E.D. Swartz letter to D.G. Eisenhut dated June 22, 1981 (EDS 81-10).
(b).
E.D.
Swartz letter to D.G. Eisenhut dated September 22, 1981 (EDS 81-92).
(;):
E.D. Swartz letter to D.G. Eisenhut dated December 11, 1981 (EDS81-144),
(d):
D.B. Vassallo letter to L.O. DelGeorge dated January 20, 1982 (EDS 82-9).
(e):
E.D. Swartz letter to D.G. Eisenhut dated May 4, 1982 (EDS 82-84).
(f):
D.M. Crutchfield letter to L.O. DelGeorge dated May 7, 1982 (EDS 82-99).
(g):
E.D. Swartz letter to D.G. Eisenhut dated May 17, '.982 (EDS 82-98).
(h):
E.D. Swartz letter to D.G. Eisenhut dated November 18, 1982 (EDS81-246).
(1):
B. Rybak letter to H.R. Denton dated April 5, 1983 (BR 83-82).
(j):
D'.B.
Vassallo letter to D.L. Farrar dated June 27, 1982 (EDS83-216).
D B311080131 831103 l
i gDRADOCK 050002gg l
Dear Mr. Denton:
References (a), (b), and (c) provided the Quad Cities response to NUREG-0612.
References (e), (g), (h), and (i) responded to the Franklin Research Institute Technical Evaluation Report and requests for further information as documented in-References (d) and (f).
Reference (j) issued a favorable safety. evaluation report concluding that Phase I of the control of heavy loads review for Quad Cities Units 1 and 2 is acceptable.
H. R. Denton November 3, 1983 Commonwealth Edison has a program to resolve problems of stress corrosion cracking and to mitigate disc failure of the Low Pressure Turbine.
Part of this program is the selective refurbishment of the Quad Cities Low Pressure Turbine rotors.
This rotor refurbishment will be initiated on Unit 2 during November 1983 and will be done on site.
Plans are being formulated for future refurbishment at a dedicated facility.
The rotor refurbishment equipment will be lifted using associated lifting devices and slings which were designed and build in accordance with NUREG-0612 requirements.
Our previous submittals in response to NUREG-0612 did not reflect these lifts on this equipment.
The attachment to this letter supplements our responses in References (a) and (b).
To the best of my knowledge and belief the statements contained herein and in the attachment are true and correct.
In some respects these statements are not based on my personal knowledge but upon infor-mation furnished by other Commonwealth Edison employees and Consultants.
Such information has been reviewed in accordance with Company practice and I believe it to be reliable.
Please direct any questions you many have concerning this matter to this office.
Very truly yours, A 4. h P. L. Barnes Nuclear Licensing Administrator 1m Attachment cc:
J. G. Keppler - Region III R. Bevan - NRR QC Resident Inspector - Region III USNRC Document Control Oesk 7560N l
't 1
1 QUAD CITIES 1 & 2 INSTRUCTIONS FOR UPDATING THE QUAD CITIES HEAVY LOADS MOVEMENT REPORT Supplements to the Heavy Load Movement Reports are indentified by a vertical line in the right margin of the page.
Previouc Page Supplement Page Quad Citics Station Report, Phase I Pages 3-10a, 10b, 10c Quad Cities Station Report, Phase II i
2.3-4 2.3-4 2.3-7 2.3-7 2.3-8 2.3-8 2.3-8a 7560N i
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QUAD CITIES Table 3-1 (Cont'd) 3-1.6 Unit 1 & 2 Turbine Building Crane (125/10 Ton, 175/25 Ton)
(Drawing MS-165, Sheet 4)
Load Identification Approx. Weight Liftina Device Procedural Control Roto Repair Device (RRD) Base 33 Tons 4-1 1/2" Cable G.E. Dwg. A010 GE Procedure
- RRD Apron 15 Tons 4-1 1/2" Cable G.E.
Dwg. A020 GE Procedure
- RRD Extension A 13 Tons 4-1 1/2" Cable G.E.
Dwg. A030 GE Procedure
- RRD Extension B 10 Tons 4-1 1/2" Cable G.E.
Dwg. A040 GE Procedure
- RRD Hydraulic Jackstand 9 Tons (2) 2-1" Cable G.E. Dwg. A050 g and Bearing Housing 2-1" Shackles G.E. Dwg. A093 i
G.E. Procedure
- RRD Headstock Base / Mechanics 12 Tons 4-7/8" Cable G.E. Dwg. A093 G.E. Procedure
- RRD Compound & Sub-Base 14 Tons 2-1/2" Cable G.E. Dwg. A090 G.E. Procedure
- RRD Tool Support Platform 8 Tons 4-7/8" Cable G.E. Dwg. A090 G.E. Procedure
- RRD Wheel Carriage and Upender 10 Tons (2) 4-7/8" Cable G.E. Dwg. Allo G.E. Procedure
- RRD Static Balance with ways 21 Tons 2-1 3/4" Cable G.E. Dwg. A300 G.E. Procedure
- RRD Tool Support 4 Tons 4-1/2" Cable G.E. Dwg. A091 G.E. Procedure
- O G.E. Procedure No. RRD 100, 200, 300, 400, 500 3509D*
QUAD CITIES Table 3-1 (Cont'd) 3-1.6 Unit 1 & 2 Turbine Building Crane (125/10 Ton, 175/25 Ton)
(Drawing MS-165, Sheet 4)
Load Identification Approx. Weight Lifting Device Procedural Control RRD Turnover Stand 10 Tons 2-3/4" Cable G.E. Dwg. A140 GE Procedure
- RRD Ovens / Stand 5 Tons (4) 2-78" dia. Cable G.E. Dwg. A241 GE Procedure **
Porta-Bor (PB) Main Bed 21 Tons Quadruple Chain GE Dwg. 8050 Sling with Master GE Procedure **
Link & Sling Hooks PB/ Column and Center Post 9 Tons Double Chain Sling G.E.
Dwg. B080 with Master Link &
GE Procedure **
Y Sling Hooks a
O PB/ Table and Chuck 7 Tons Triple Chain Sling G.E. Dwg. B010 with Master Link &
GE Procedure **
Sling Hooks PB/RH Crossrails and Saddle 15 Tons Double Chain Sling G.E. Dwg. 8020 with Master Link &
GE Procedure **
Sling Hooks PB/ Bed Extension 13 Tons Quadruple Chain G.E. Dwg. B040 Sling with Master GE Procedure **
Link & Sling Hooks PB/LH Crossrail & Saddle 12 Tons Double Chain Sling G.E. Dwg. B030 with Master Link &
GE Procedure **
Sling Hooks G.E. Procedure No. R3D 100, 200, 300, 400, 500 G.E. Procedure No. PB 100, 200 3509D*
i
QUAD CITIES Table 3-1 (Cont'd) 4 3-1.6 Unit 1 & 2 Turbine Building Crane (125/10 Ton, 175/25 Ton)
(Drawing MS-165, Sheet 4)
Load Identification Approx. Weight ifting Device Procedural Control PB/ Control Center 8 Tons Quadruple Chain G.E. Dwg. B070 Sling with GE Procedure **
Master Link &
Sling Hooks PB/ Milling Attachment 5 Tons Double Leg Bridle G.E. Dwg. B120 Sling (wire rope)
G.E. Procedure **
with both hooks attached IRD Console 11 Tons Lifting chains and G.E. Dwg. C100 y
hooks to be supplied GE Procedure ***
g with IRD Device o
IRD #1 Pedestals 13 Tons Lifting chains and G.E. Dwg. C100 hooks to be supplied GE Procedure ***
with IRD Device IRD #2 Pedestals 13 Tons Lifting chains and G.E. Dwg. C100 hooks to be supplied GE Procedure ***
with IRD Device G.E. Procedure No. PB 100, 200 G.E. Procedure No. IRD 100, 200 3509D*
a
QUAD CITIES TABLE 2.3.2-1 (Cont'd)
HAZARD SAFETY RELATED ELIMINATION CRANE LOCATION ELEVATION LOAD HAZARD AREA EQUIPMENT CATEGORY CR0 Repair Reactor 647'-6" 1/2 Ton M-N/14-17 Cable Tray (b)
Floor Jib Building Division 1 Crane Unit 1 flr. el. 595' Unit 1 Turbine 595'-0" Turbine Hatch / Railroad Units 1 and 2 (f)
Overhead Building Rotor tracks F-G/24-25 Cable tunnels Crane flr. el 580' Unit 1 OG Cooling water lines floor el 595'
?y Unit 2 Turbine 595'-0" Turbine Hatch / Railroad Unit 2 DG Cooling (f)
A Overhead Building Rotor tracks F-G/1-2 water lines Crane.
fir. el 595' 3509D*
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QUAD CITIES i
Response 2.3.2b (Cont'd) 1 pool.
Special fuel handling procedures govern its use.
j CRD Reoair Floor Jib Crane l
The CRD repair floor Jib crane is not capable of carrying a heavy load as defined in NUREG-0612.
There is an intervening floor for a potential load drop affecting Division 1 cable trays at floor elevation 595'-0".
Redundant Division 2 systems are available.
Second Floor Jib Crane Although this crane has a rated capaicty greater than a heavy l
load as defined in NUREG-0612, it is not used in handling heavy l
loads.
The probability of crane-load failure is very low.
Turbine Building Hatches A.
Turbine Rotor A potential fall of a turbine rotor in the hatch area at F-G/24-25 could impact the ground floor above the Units 1 and 2 cable tunnels at floor elevation 580', with the potential of af fecting the shutdown capability of either or both units.
The drop may also affect the Unit 1 Diesel Generator cooling water lines G/24, however, the Unit 1/2 t
Diesel Generator is available.
A potential fall in the hatch at F-G/1-2 might affect Unit 2 Diesel Generator cooling water lines at G/2, however, the Unit 1/2 Diesel Generator is available.
Station procedure QMP 100-25 addresses the movement of heavy loads by the Turbine Building Overhead Crane.
Furthermore, the likelihood is i
very low of a turbine rotor repair requiring rotor removal from the turbine floor.
The probability of a crane-load-
. failure is also very low.
The crane-load combination for these cranes is indicated in Table 3-1, of the response to item 2.1 I
2.3-7 l
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QUAD CITIES f
B. Low Pressure Turbine Disc Refurbishment Equipment A potential fall of the Low Pressure Turbine Turbine Rotor refurbishment equipment in the hatch area at F-G/24-25 in excess of 8000 lbs., could impact the ground floor above Units 1 and 2 cable tunnels at floor elevation 580' with the potential of affecting the shutdown capability of either or both units.
The drop may also affect the Unit 1 Diesel Generator cooling water lines at G/24, however, the Unit 1/2 Diesel Generator is available.
A potential fall in the hatch at F-G/1-2 might offect Unit 2 Diesel Generator cooling water lines at G/2, however, the Unit 1/2 Diesel Generator is available.
Associated lifting procedures will be used for lifting the turbine rotor refurbishment equipment before any lifts are made.
The associated lifting devices and slings used for lifting the turbine rotor refurbishment equipment is designed and built per NUREG 0612.
In additiori, the rotor refurbishment equipment above 10 TONS will be lifted using the 125 TON or 175 TON Turbine Building Overhead Crane.
A safety factor of approximately 4 is obtaincd between the heaviest piece of refurbishment equipment which is 33 Tons and the 125 Ton Turbine Building Overhead Crane.
Therfore, the probability of a load drop is negligiable.
Turbine Building Main Floor Area C-D/12-14 The Units 1 and 2 Turbine Building overhead cranes will be used to lif t Heavy Loads over safety-related Stand-by Gas Treatment and RHR Service water lines, located just below the turbine floor, in area C-D/12-14.
Af ter a floor loading analysis was performed, a modification was issued to structurally up-grade the portion of the turbine floor where the Turbine Rotor Refurbishment Equipment is to be placed, setting over both the Stand-by Gas and RHR Service water lines.
The crane-load combination and applicable procedures 2.3-8
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l are shown in Table 3-1.
In addition, associated lifting procedures will be used for lifting the turbine rotor refurbishment equipment before any lifts are made.
The associated lifting devices and slings used for lifting the turbine rotor refurbishment equipment is designed and built per NUREG-0612.
The rotor refurbishment equipment above 10 TONS will be lifted using the 125 TON or 175 TON Turbine Building Overhead Crane.
A safety-factor of approximately 4 is obtained between the heaviest piece of refurbishment equipment which is 33 TONS and the 125 TON Turbine Building Overhead Crane.
Therefore, the probability of a load drop is negligfable.
Based on the above considerations and the low probability of a crane-load failure, this area is eliminated from further analysis.
Request 2.3.2c For interactions not eliminated by the analysis of 2.3-2-b, above, identify any handling systems for specific loads which you have evaluated as having sufficient design features to make the likelihood of a load drop extremely small and the basis for this evaluation (i.e., complete compliance with NUREG-0612, Section 5.1.6, or partial compliance supplemented by suitable alternative or additional design features).
For each so I
evaluated, provide the load-handling-system (i.e.,
crane-loaa-combination) information specified in Attachment 1.
Response 2.3.2c None j
2.3-8a i
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