ML20151U892
| ML20151U892 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 04/21/1988 |
| From: | Delgeorge L COMMONWEALTH EDISON CO. |
| To: | Murley T Office of Nuclear Reactor Regulation |
| References | |
| 4532K, NUDOCS 8805020189 | |
| Download: ML20151U892 (11) | |
Text
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)' Commonwealth Edison One First National Plaza. Chicago,12nois 8
O 7 Address Reply to: Post Ofnca Box 767 i
(,/ Chicago, tilinois 60690 0767 April 21, 1988 4
Mr. T.E. Murley Office of Nuclear Reactor Regulation U.S. Nuclear Reactor Regulation Washington, DC. 20555
Subject:
Braidwood Unit I and 2 Limitorque Operator Lubrication NRC Docket Nos. 50-456 and 50-457
Reference:
(a)
L.O. De1 George letter to T.E. Murley, dated April 4, 1988
Dear Mr. Murley:
The purpose of this letter is to supplement information documented in reference (a). This information was discussed with members of the NRC Staff via a teleconference on April 20, 1988. provides an ERRATA sheet that corrects the reference in Action Item 4 from "... item 2a...."
to "... item 2c..." provides a listing of the Unit 1, Group II valves including the two (2) valves located inside containment and those that provide containment isolation. The normal position and post LOCA position of the containment isolation valves are presented. Also, the expected radiation environment and valve function of all of these valves are given. provides an updated penetration test results chart for l
Unit 1, Unit 2, Unit common and the overall total. Also, included are the i
specific penetration test results for those valves in the 300 to 310; 380 to 390; and 390 to 400 ranges.
l Valve numbers 1RH8716A and 2SX005 were the two valves reclassified from Group II to Group III, based on the visual examination, that had mixture ratios of 35:1 and 30:1 Calcium to Lithium, respectively.
As indicated in the teleconference all Braidwood Unit 2 Group II valve operators are scheduled to have the grease changed-out by 5/2/88.
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8805020189 080421 i
PDR ADOCK 05000456 P
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L If additional information is required or questions arise concerning this material, please contact me or Steve Hunsader of our Nuclear Licensing Staff.
Very truly yours,
/tild)
Louis O. DelGeorge Assistant Vice President SCH/klj Att.
cc: NRC Region III Braidwood Resident Inspector
.S. Sands 4532K
ERRATA to the April 11, 1988 L.O. DelGeorge letter to T.E. Murley; Subject, Braidwood Unit 1 and 2 Limitorque Operator Lubrication.
Page Line Description 9
Line 2 of Item 4 change"... item 2a..."
to "... item 2c..."
l
Attcchment 2 Braidwood Unit 1, Group II Valves.
Position Valva No.
Env.
Normal Post Accident Zone Life Radiation Function IAF006B N
mild lx104 rads Feedwater lAF013B N
0 O
mild lx104 rads Feedwater IAF013C N
0 O
mild lx104 rads Feedwater 1AF015 N
0 0
mild lx104 rads Feedwater lAF013F N
0 0
mild lx104 rads Feedwater lAF013G N
0 0
mild lx104 rads Feedwater lAF013H N
0 0
mild lx104 rads Feedwater ICC685 H
0 C
A13C 34.2 yrs 1x107 rads RCP thermal barrier return ICC9412B H
A13E 38.4 yrs lx105 rads RCP cooling water supply ICC9413B H
A13E 38.4 yrs 1x105 rads RCP therical barrier ICC9473B**
(H) mild -
A8 40 yrs 1x104 rads Discharge HDR cross-tie valve ICS001A H
A13C 3.5 yrs lx107 rads containment spray ICS001B H
A13C 3.5 yrs 1x107 rads Containment spray ICS007A H
C C
A13C 3.5 yrs lx107 rads containment spray ICV 112B H
A13H 40 yrs 8x107 rads VCT outlet ICVll2C H
A13H 40 yrs 8x107 rads VCT outlet ICVil2D H
A13C 34.2 yrs lx107 rads RWST to chg. pump icv 8100 H
0 C
A13C 34.2 yrs lx107 rads RCP seal water supply icv 8106 H
0 C
A13C 34.2 yrs lx107 rads RCP seal water supply icv 8111 H
A13C 34.2 yrs lx107 rads Cent chg pump miniflow valve IOG057A*
H C
C C6 40 yrs 2x108 rads Hydrogen recombiner IRC8001A(NOTE 1) N mild lx104 rads Loop 1A stop valve IRC8003B N
mild 1x104 rads Loop 1B recirc. bypass 1RH610 H
A13C 34.2 yrs lx107 rads RHR miniflow valve IRH8716B A13C 34.2 yrs lx107 rads MX 1A Dsch cross-tie valve IRY8000A*
H C5 10.66 yrs 2x108 rads Pressurizer PORV ISI8801B H
C O
A13C 34.2 yrs 1x107 rads cold leg safety injection ISI8809B H
O C
A13C 34.2 yrs lx107 rads RH cold leg injection ISI8812B H
A13C 34.2 yrs lx107 rads RH pump IB suction 1918840 H
C O
A13C 34.2 yrs lx107 rads Hot leg safety injection isisuu H
A13C 34.2 yrs lx107 rads SI pump 1B miniflow
e Attschment 2 Braidwood Unit 1, Group II Valves Position valva No.
Env.
Normal Post Accident Zone Life Radiation Function ISX001B N
mild 1x107 rads Essential service water ISX016B H
O O
A13C 3.5 yrs lx107 rads Essential service water N9tild H-harsh c-closed o-open Inside contairunent
- Listed as harsh, actually is in mild environment; EQ binder revision inprocess to correct.
(--)All underlined valve numbers are containment isolaticn valves NOTE 1: The reactor coolant loop stop valve operators for Units 1 & 2, (1/2RC8001A, B,C,D and 1/2RC8002A, B,C, D) are not required to perform any normal, abnormal or emergency function during plant operation. These valves are required to be open with the power removed from the valve operatos in modes 1, 2, 3, and 4 per Technical Specification 3.4.1.5.1.
These operators are installed on the valves to serve a maintenance function only. These valves do not require the grease to be changed.
4532K
ALI Penetration Test Results Breakdown I.
See Unit #1 Chart Attached a) 300-310 (mm)
Group No.
Penetration Test Result Valve Number 2
309 1CC9412B 2
309 1CV112B 2
309 1CV112C 2-309 1CV112D 2
305 1CV8100 2
309 1RC8003B 2
302 1RY8000A 2
309 ISI8801B 3
309 1CC9412A 3
305 ISI8821A 3
309 ISI8821B b) 380-390 (mm)
Group No.
Penetration Test Result Valve Number 3
2 380 1RH610 2
380 ISX001B 2
384 ISX001B (900 gearbox) 3 384 ISIB808D 3
380 1CV8355A 3
304 ISX007 (900 gearbox) c)
39,0-400 (mm)
Group No.
Penetration Test Result Valve Number 2
391 1CC9413B 3
391 1Wo006A II.
See Unit #0 Chart Attached a) 390-400 (mm)
Group No.
Penetration Test Result Valve Number 2
392 00G059
. Attachment 3 (cont'd)
III.
See Unit #2 Chart Attached a) 300-310 (mm)
Group No.
Penetration Test Result Valve Number 2
309 2RH8702B 2
309 2SI8923A 3
309 2cS001A 3
309 2CV8355A 3
309 2RH8702A 3
309 2SI8809A 3
309 2Wo020B b) 380-390 (mm)
Group No.
Penetration Test Result Valve Number 2
380 2CC9413A 2
384 2CC9413B 2
384 2cc9414 r
45'2K e
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t CALCIUM EASED GREASE PENETRATION Cam) l 8
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CALCItJM BASED GREASE PEtETRATIDN (mm) l--
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ne ALI RESLLTS (TD DATO CALCItJM GROUP 1 l3 l ) I i,
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GROUP 2 1
it 12 118 2
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GROUP 3 3
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273 28E 293 398 318 328 U
333 348 358 369 375 389 398 488 418 CALCIUM EASED GREASE PEtETRATION (mm) h OJ I
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