ML19322B478
| ML19322B478 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 08/31/1973 |
| From: | Thies A DUKE POWER CO. |
| To: | Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| IEB-73-03, IEB-73-3, NUDOCS 7912030316 | |
| Download: ML19322B478 (8) | |
Text
'
w J
~~
DUKE POWER GoxPANT Powza Burunro 4es Sourn Caumen Srazzz; CnAntarTz,N. C. asaos A
C. TMES P.o. Box 217e SENsOn Vaca PassicsNT PRODUCTION AND TR&N8aA 8SSION August 31, 1973 Mr. Norman C. Moseley, Director Directorate of Regulatory Operations Region II - Suite 818 230 Peachtree Street, Northwest Atlanta, Georgia 30303 Re: RO:II:NCM 50-269-
Dear Mr. Moseley:
In response to your letter of July 27, 1973 which transmitted Regulatory Operations Bulletin No. 73-3, " Defective Hydraulic Shock Suppressors and Restraints," please find attached a report of the inspection of Grinnell hydraulic suppressors installed on Oconee Unit 1.
This inspection was completed on August 24, 1973, and the results of this inspection were reported immediately to your office by telephone.
Very truly yours, A. C. Thies ACT:vr Attachment o
e
\\
-. 3/f 7912080
t
\\
.- s SEP 1111173 Letter from Duke Power Company, A. C. Thies, dated August 31, 1973, ROB 73 50-269
)
DISTRIBUTION:
H. D. T' ornourg, R0 n
RO:HQ (4)
Directorate of Licensing (4) 2_-
TR Central Files PDR Local PDR NSIC OIS, OR b
e k
i
[
V DUKE POWER COMPANY OCONEE NUCLEAR STATION INSPECTION OF HYDRAULIC SUPPEESSORS AND RESTRAINTS Introduction Inspection of all hydraulic suppressors and restrainta in safety-related systems was required at the next reactor shutdown foIIowing issuance of i
Regulatory Operations Bulletin No. 73-3.
This insp erinn was conducted at Oconee Unit 1 during August 19-24, 1973.
On August 24,1973, the results of this inspection were reported to the Directorate of Regulatory Operations, Region II, by telephone.
Results of Inspection Sixty-nine (69) suppressors and restetints were inspected.
All suppressors and restraints were manufactured by the Grinnell Company.
'Dro suppressor fluid reservoirs were found dry on 132 reactor coolant pump motor.
This was the result of leaking tubing fittings between the suppressors and the reservoirs. Minor leaks at tubing fittings were found on forty-one (41) other suppressors.
Table 1,"Suppressors and Restraints Inspected," sumarizes the inspection results.
Included in this table are the serial number, model, and location of installation, the as-found condition, and corrective action taken to ensure complete opera-bility of the suppressors.
After tigntening any leaking joints or fittings, the supperssors were re-inspected to verify no leakage.
The two suppressors on the main steam system which had oil leaks at the cylinder joints will be observed closely, and if necessary, the suppressors will be replaced at the next outage.
Surveillance Schedule
~
An inspection of suppre'ssors and restraints on safety-related systems will be 4
made annually during the refueling outage.
This surveillance will be made in accordance with periodic test procedure PT/0/A/027/35, " Inspection of Hydraulic Suppressors and Restraints."
l
f 4
i TABLE 1 SUPPRESSORS AND RESTRAINTS INSPECTED Serial No.
Model Location As-Found Condition Corrective Action j
Main Steam System I
Size 3 Turbine Building Acceptable N/A I
Outside Shop 2388 Size 3 Turbine Building Acceptable N/A
( )
Outside Shop 4410 Size 2 Turbine Building 011 leak at cylinder joint Tightened cylinder joint 4411 Size 2 Turbine Building 011 leak at cylinder joint Tightened cylinder joint 4414 Bise 24 Turbine Building 011 leak at tube fitting Tightened fittingt added h pint Beside HS-14 oil 4731 size 6 Turbine Building Acceptable N/A Outside Shop 4732 Size 6 Turbine Building Acceptable N/A Outside Shop l
t 6076 Size 2 Turbine Building Acceptable N/A l)
(West) 6077 Size 2 Turbine Building Acceptable N/A 6079 Size 2 Turbine Building 011 leak at tubing fitting Tightened tubing fitting; added West of MS-24 pint oil j
6175
. Size 2 Turbine Building Acceptable N/A Basement-Above MS-90
.6177 Size Rh Turbine Building Acceptable N/A Outside Shop 6179 Size 2k Turbine Building Acceptable N/A l
Outside Shop
- Strial No.
Hodal Location As-Found Condition Corrective Action
~
j Main Steam System I
6180 Size 2 Turbine Building Acceptable N/A Outside Shop 6182 Size 2 Turbine Building Acceptable N/A Outside Shop 6519 Size 2 Behind Moisture Acceptable N/A
()
Separator 6320 hizW fis Behind Moisture Acceptable N/A Separator f
6321 Nine 21s turbine Building Acceptable N/A 3
l Uutside Shop l
6984 Bise 2 Turbine Building Acceptable N/A Floor (West Side) 6985 Size 2 Turbine Building Acceptable N/A Floor (West Side) 11373 Size 4 Reactor Building Acceptable N/A 4th Floor. "B", Side
[)
3 11375 Size 4 Reactor Building Acceptable N/A 4th Floor, "A" Side 11376 Size 4 Reactor Building Acceptable N/A 4th Floor "A" Side i
11377 Size 4 Reactor Building Acceptable N/A 4th Floor. "A" Side Reactor Coolant System Pressurl=er Surge Acceptable N/A Line - 6 ft. under i
4th Floor Grating
.Above RC-66 Accentahla w/a
~ S riel No.
Modol
_ Location As-Found Condition Corrective Action Reactor Coolant System Siza 2 20 ft below RC-9 Acceptable N/A r
f Size 5 RC Pump 1A2 011 leak at tube fitting Tightened tube fitting -
4361 Size 5 RC Pump 1B1 011 leak at tube fitting Tightened tube fitting
,4362 Size 5 RC Pur IB1 011 leak at tube fitting Tightened tube fitting 4
(}
~4363 Size 5 RC Pump 1B1 011 leak at tube fitting Tightened fitting 4364 Size.5 RC Pump 1B2 011 leaks at joints and Tightened all joints; added 1 tube fitting gallon oil 4365 Size 3 RC Pump 1B2 011 leak at tube fitting Tightened tube fitting 4366 size 3 RC Pump 1h2 Oil leak at joluta and tube Tightened all joihts; added 1 fitting gallon oil 4381 Hise 21s East side "A" 80 Acceptable N/A 4400 Bise 23 RC-9 Acceptable N/A 4402 Size 2y Pressurizer 011 leak at joint Tightened joint; added 1/3 pint
()
oil 4403 Size 2 Pressurizer 011 leak at seal Tightened seal; added 1/3 pint oil 4404 Size 2 Pressurizer Acceptable N/A 4405 Size 2 20 ft below RC-9 Acceptable N/A J
44$07 Size 2 Pressurizer Acceptable N/A 4441 Size 2 Line from Pressurizer Oil leak at joint Tightened joint; added 1/3 pint l
oil 4532 Size 2 Pipe from RC-67 Acceptable N/A l
\\
~ Serini No.
Modal Location As-Found Condition Corrective Action
{
t 4533 Size 2h Line from Pressurizer Acceptable N/A l
4534 Size 2 Pipe from RC-67 Acceptable N/A 4537 Size 2 Line from Pressurizer Acceptable N/A
_4538 Size 2 Line from Pressurizer Oil leak at sight glass Tightened seating of glass; addi
(')
pint oil 4539 Size 2 Line from Pressurizer 011 leak at. tube fitting Tightened fitting; added pint oil 4
6053 Size 2 Above RC-66 Acceptable N/A 6d54 Mte 21s Above Rd-66 Acceptable N/A 6803 81 e 3 RC Pump 1A1 011 leak at tube fitting Tightened fitting 6804 Size 5 RC Pump 1A1 011 leak at tube fitting Tightened fitting 11356 Size 5 RC Pump 1A1 011 leak at tube fitting Tightened fitting i
11357 Size 5 RC Pump 1A2 011 leak at' tube fitting Tightened fitting
[)
' Low Pressure Injection System
)
i 4368 Size 2 Reactor Building Acceptable N/A ist Floor 4369 Size 2 Reactor Building Acceptable N/A ist Floor F_eedwater System Size 4 East of FDW-40 Acceptable N/A 2330 Size 4 East of FDW-40 Acceptable N/A 2332 Size 3 Above FDW-40 Oil leak at tube fitting Tightened fitting; added pint l
[
- 11
~ Strici No.
Model Location As-Found Condition Cerrcctiva Action Feedwater System 2335 Size 3 Above FDW-40 Acceptable N/A I
4332 Size 3 West Side -
Acceptable N/A "B" SG 5912 Size 2 Above FDW-54 Acceptable N/A (ighPressureInjectionSystem 4
l 4314 Size 2 West of Pressurizer Acceptable N/A i
l 4436 Size 2 West of RC Pump 1A1 011 leak at tube fitting Tightened tube fitting 4495 Size 2h itP-246 Acceptable N/A Reactor Building 5ptdy dystesa
~
1446 Blue 2 East Penetration Acceptable N/A j
Room 4315 Size 2 Reactor Building Acceptable N/A East Side 4319 Size 2 Reactor building Acceptable N/A O_
2nd Floor
> Condenser Cooling Water System 4413 Size 5 Turbine Building Acceptable N/A East Side i
0 0
0 y
- -