ML18348A396
| ML18348A396 | |
| Person / Time | |
|---|---|
| Site: | Palisades, Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 07/29/1977 |
| From: | Bixel D Consumers Power Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18348A396 (6) | |
Text
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- Area Code 517 788-0850 July 29, 1977 Director of Nuclear Regulation US Nuclear Regulatory Commission Washington, DC 20555 DOCKETS 50-155 AND 50-255 -
LICENSES DPR-6 AND DPR BIG ROCK POINT AND PALISADES PLANTS -
RESPONSE TO LETTER DATED MAY 20, 1977 -
REACTOR VESSEL SURVEILLANCE By letter dated May 20, 1977, Consumers Power Company was requested to provide specific information concerning reactor vessel materials and associated surveil-lance programs for the Big Rock Point and Palisades plants.
The respective reactor vessel vendors have been contacted and requested to provide the required data.
However, much of the data is unavailable at this time.
The information that is available is being provided.
For those responses stipulating "to be supplied," the required information will be forwarded wh:en received from the vendor.
As yet, no specific date can be provided for a full response.
Item
- l. Provide the estimated maximum fluence (E>l Mev) at the inner surface of the reactor vessel wall as of March 31, 1977*
Resnonse
- 1.
19 I 2
Big Rock Point - 1.5 x 10 n cm.
Palisades - 1.82 x iol8 n/cm2.
- 2.
Provide the effective full power years (EFPY) of operation accumulated as of March 31, 1977*
Resnonse
- 2.
Big Reck Point - approximately 10."5 EFPY.
Palisades - approximately 2.2 EFPY.
2
- 3.
Identify the firm or firms that fabricated your reactor vessel.
Response
- 3.
Big Rock Point - The vessel was fabricated by Combustion Engineering for General Electric.
Palisades - The vessel was fabricated by Combustion Engineering.
Item
- 4.
- a.
Provide a sketch of the reactor vessel showing all materials welds, in the beltline region* and provide an identification number for each material.
Response
- 4.
- a.
Big Rock Point - To be supplied.
Palisades - To be supplied.
Item
- 4.
- b.
Provide the following information for each of the welds in the belt-line region:
(1)
Shop control number or procedure ~ualification number; (2) Filler metal and heat number;
( 3)
Type of flux and batch number; (4)
Welding process (sub arc, electroslag, manual metal arc, etc);
(5)
Post-weld heat treatment; (6)
Chemical composition (particularly Cu, P and S content);
( 7)
Drop weight Tndt ;
(8)
RTndt; (9)
Charpy upper shelf energy (unirradiated);
(10)
Tensile properties (unirradiated);
(11)
Firm performing weld if more than one firm participated in welding; (12)
The maximum end-of-life fluence at the vessel inner wall.
Res-eonse 4.b(l-12) Big Rock Point - To be supplied.
Palisades - To be supplied.
Item
- 4.
- c.
Provide the following information for each of the plates or forgings in the beltline region:
(1)
Plate or forging serial number; (2) Plate or forging heat number;
3 (3)
Plate or forging material specification number; (4)
Plate or forging supplier; (5)
Plate or forging heat treatment; (6)
Chemical composition (particularly Cu, P and S content);
(7)
Drop weight Tndt;
( 8)
RTndt ( unirradiated);
( 9)
Charpy upper shelf' energy ( unirradiated);
(10)
Tensile properties (unirradiated);
(11)
The maximum end-of-lif'e fluence at the vessel inner wall.
Response
4.c (1 & 2)
Big Rock Point:
Six plates were used to fabricate the vessel belt-line region.
These plates and their heat numbers are:
Plate No (CE)
S-5503-3 S-5503-2 S-5503-1 S-5503-4 S-5501 S-5502 Heat No (Luk.ens Steel) 19246-3 19246-2 19246-1 19246-4 A-1054-3D A-1917-3 Palisades: Six plates were used to f'abricate the vessel belt-line region.
These plates and their heat numbers are:
Plate No D-3803-1 D-3803-2 D-3803-3 D-3804-1 D-3804-2 D-3804-3 Heat No C-1279-3 A-0313-2 C-1279-1 C-1308-1 C-1308-3 B-5294-2 4.c (3)
Big Rock Point:
To be supplied.
Palisades:
To be supplied.
4.c (4) Big Rock Point:
The plate supplier was Lukens Steel.
Palisades:
To be supplied.
4.c (5)
Big Rock Point:
The plate was supplied to Combustion Engineering in the hot rolled condition.
The plate was heat-treated as full plate as follows:
l) 1600 +/- 25°F f'or*4 hours.
- 2)
Brine.quenched.
- 3) 1225 +/- 25°F for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
- 4)
Furnace cooled.
- 5) 1125 +/- 25°F for 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br />.
- 6)
Furnace cooled.
Palisades:
To be supplied.
4 4.c (6)
Big Rock Point:
To be supplied.
Palisades:
The chemical composition of the plates with respect to suli'ur, phosphorus, and copper are documented for three of the plates as follows:
Plate D-3803-1 D-3803-2 D-3803-3 Cu
.25
.25
.25 p
.011
.012
.010 All figures in weight percent s
.019
.021
.020 4.c (7 & 9)
Big Rock Point:
To be supplied.
Palisades:
Drop weight and Charpy V-notch upper shelf energies are as follows :
Plate No J'ndt(OF)
V-Notch (Ft Lb - 160°F)
D-3803-1
-30 138.o D-3803-2
-30 132.0 D-3803-3
-30 140.3 D-3804-1
-30 109.0 D-3804-2
-40 117.0 D-3804-3
-30 110.0 4.c (8, 10 & 11)
Big Rock Point:
To be supplied.
Palisades:
To be supplied.
Item
- 5.
- a.
List the weld, plate and forging materials included in the vessel material surveillance program.
Response
- 5.
- a.
Big Rock Point:
For the surveillance program, the ends of two plates were provided to General Electric Company by Combustion Engineering.
These were taken from plate numbers S-5503-2 and S-5503-3.
Item Palisades:
For the reactor vessel surveillance program:
All base metal specimens were taken from plate D-3803-1.
All weld specimens were taken from the weld between plates D-3803-1 and D-3803-2.
All HAZ specimens were those affected by the weld between plates D-3803-2 and D-3803-3.
The specimens themselves were all taken from plate D-3803-3.
- 5.
- b.
For each weld listed in 5.a, provide the information requested in items (l) through (ll) of question 4.b.
5
Response
5.b (4.c (1 & 2))
Big Rock Point:
The plate for the surveillance material was identified as:
Plate No S-550:3-2 S-5503-3 Heat No 19246-2 19246-3 Size 6 x 10 x 54" 6 x 10.5 x 78" Palisades:
To be supplied.
- 5. b ( 4. c ( 3 & 4))
Big Rock Point:
To be supplied.
Palisades:
To be supplied.
5.b (4.c (5))
Big Rock Point:
For the surveillance program, the two plate ends were given a simulated post-weld heat treatment of_ll25°F for 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br />.
This treatment was followed by furnace cooling.
Palisades:
To be supplied.
5.b (4.c (6))
Big Roe~ Point:
Chemical tests for the plate ends from plate S-5503-3 from heat 19246-3 showed.016 weight percent phosphorus and.021 weight percent sulphur.
Palisades:
The chemistries* of the surveillance weld specimens are as follows :
Welds Connecting D-3803-1 to D-3803-2 D-3803-2 to D-3803-3 Root
~
Root Face s
.010
.010 s
.009
.010 p
.011
.Oll p
.Oil
.012 Cu
.26
.22 Cu
.25
.20 Quantities in Weight Percent 5.b (4.c (10))
Big Rock Point:
Tensile properties from Lukens Steel Test Data showed from plate S-5503-3:
Yield Strength - 52.3 ksi.
Tensile Strength - 86.4 ksi.
Palisades:
To be supplied.
5.b (4.c (7, 8, 9 & 11)) Big Rock Point:
To be supplied.
Palisades:
To be supplied.
Item
- 5.
- c.
For each plate or forging specimen listed in 5.a, provide the infor-mation listed in items (1) through (10) of question 4.c.
- ~- -
6
Response
- 5.
- c.
Big Rock Point:
To be supplied.
Palisades:
To be supplied.
Item
- 5.
- d.
Provide a copy of the report which describes the surveillance program for your reactor vessel(s), if available.
Response
- 5.
- d.
Big Rock Point:
To be supplied.
Palisades:
To be supplied.
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D A Bixel
.i:~.~clear Licensing Administrator CC:
JGKeppler, USNRC