ML20107C645
| ML20107C645 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 02/15/1985 |
| From: | Wilson R GENERAL PUBLIC UTILITIES CORP. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 5211-85-2032, CLI-84-11, RFW-0411, RFW-411, NUDOCS 8502220011 | |
| Download: ML20107C645 (9) | |
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GPU Nuclear Corporation NMOIM7 100 Interpace Parkway Parsippany, New Jersey 07054-1149 (201)262 6500 TELEX 133-482 Writer's Direct Dial Number:
February 15, 1985 5211-85-2032 RFW-0411 Office of Nuclear Reactor Regulation Attn:
J. F. Stolz, Chief Operating Reactors Branch No. 4 U.S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Sir:
Three Mile Island Nuclear Generating Station Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Environmental Qualification - SBLOCA Radiation As discussed in a pho.'e conversation between R. LaGrange (NRC) et al and L. W.
Harding (GPUN) et al on January 3 and 18, 1985 and discussions during the January 29 and 30 EQ audit, enclosed please find information requested associated with GPUN Letters dated August 23, 1984 (5211-84-2217), November 9, 1984 (5211-84-2255) and December 11, 1984 (5211-84-2292).
GPUN confirms that the electrical equipment required to mitigate a SBLOCA at TMI-l identified in our letters of August 23, 1984, August 27, 1984 and November 9, 1984 is qualified to LOCA radiation levels in NRC Order CLI 84-11 subject to completion of the open items (equipment replacement) indicated in enclosure 1.
S cer ly,
'f y
R. F. W1 son Director Technical Functions Ir/0523e cc:
R. Conte J. Van Vliet 4
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GPU Nuclear Corporation is a subsidiary of General Public Utilities Corporation i
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Resolution of Equipment Items Whose SBLOCA Radiation Qualification Was Identified In Previous Submittals 1.
Incore Thermocouples The 46 operational incore thermocouples discussed in our August 23, 1984 submittal was derived from a telephone conversation with personnel at TMI-2 in August of 1984. These 46 incore thermocouples gave readings around the expected average value. Based on a review of LER's for TMI-2, 23 thermocouples are now considered in service as defined by the TMI-2 Tech. Spec. This telephone conversation also revealed that some thermocouples move in and out of operational status in a random way.
These failures by all indications are believed to be caused by weakness in the junctions not by radiation effects on the extension cable. The 50 thermocouples discussed in attachment 6 of our letter of December 11, 1984 (JIO-T1-84-6) was derived from electrical resistance measurements-reported in GEND INF 031 Vol. 2 of April 1984. This report states that two thermocouples were considered open and dry; 26 are considered open and wet and 24 were considered to have formed new junctions.
Note that the GEND report also states that the extension cable insulation rcsistance data showed only a minor decrease from the value specified in the original specification.
The basis for the need for incore thermocouples for 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> following a SBLOCA is discussed in JIO-TI-84-6 Rev.1 submitted February 11,lly 1985.
The incore thermocouples assemblies are_ considered environmenta
' qualified for radiation.
Note that cold junction compensation RTDs are required to be qualified as part of the Incore Thermocouple System (see JIO-TI-84-7 Rev. 1). These Rosemount 1390 RTD's will be replaced by qualified WEED RTD's by March 31, 1985 (EQ-TI-136).
2.
MUP-3A/B/C (Makeup Main Lube Oil Pump GPUN has' qualified these motors to the'00R Guidelines for LB-LOCA
-radiation dose (EQ-TI-121). GPUN has confirmed that the electrical interface qualification is established and that these motors'are environmentally qualified for radiation.
3.
Rosemount' RTD Model Nos.177 HW and 177GY There are.no 177GY's installed at TMI-l which require environmental
-qualification. GPUN hasitest'information on model'No.'177 HW RTD's which, 1
shows that beta shields are not. required. GPUN performed an audit of>
test data,. verified the conduit seal ' installation and confirmed that the accuracy is compatible with the plant specific application (EQ-TI-130).
These RTD's-are now considered environmentally qualified for ra'diation..
4.
Limitorque Valves a) DHV-4A/B The existing motor leads are frayed, u..:1 action is being taken to correct this situation. The Ding's brakes are now documented as qualified (EQ-TI-105) and other outstanding action items for this file have been resolved. DHV-4A/B will be considered qualified for radiation when these motor leads problem is corrected.
b) DHV-7A/B The existing splices have been replaced by qualified Raychem splices. Outstanding action items for this file (EQ-TI-105) have been resolved, and DHV-7A/B are now considered qualified for radiation.
c) NSV-4, 15 The existing splices have been replaced by qualified Raychem splices. Outstanding items for this file (EQ-TI-105) have been resolved, and NSV-4, 15 are now considered qualified for radiation.
d) NSV-35 This valve was added to the SB LOCA Master List by letter dated August 27, 1984 (5211-84-2227). The existing splice has been replaced by a qualified Raychem splice (EQ-TI-103). The electrical interfaces have been confirme( the motor operator has been shown to be acceptable to the p. nt specific application and outstanding open items have been resolved. Therefore, NSV-35 is now considered qualified for radiation.
e) CAV 1, 3 & 13 The existing splices have been replaced by qualified Raychem splices for CAV 1 & 13. CAV-3's motor will be replaced with qualified motor and splices in February 1985 because of damaged motor lead wires. The electrical interfaces have been confirmed; the motor operators have been shown to be acceptable for the plant specific application; and outstanding open items have been resolved with the exception of the torque switch for CAV 13. Therefore, CAV 1 is now considered qualified for radiation. CAV 3 and 13 will be qualified for radiation upon replacement of their respective motor.and torque
- switch, f) MUV-12 As discussed in TDR 598 provided to NRC for review during the September 6, and 7, 1984 audit, MUV-12 is not required to be environmentally qualified for radiation for the following reasons and was inadvertantly added to the SBLOCA Master List: :
"This motor operated valve is normally open.
If the valve operator fails due to the SBLOCA postulated radiation, it will fail as-is.
Since procedure 0.P. 1104-2 limits the MU tank gas pressure'to prevent gas entrainment to the HPI pumps, this valve may be left open or closed during a SBLOCA. Failure of this valve due to radiation will not affect the ability to mitigate a SBLOCA. Therefore, this valve does not need to be qualified for the SBLOCA postulated radiation."
Attached is revised page 2 of 14 of our August 23,1984-(5211-84-2217) submittal, which deletes this value from the SBLOCA master list.
g) MUV-2A/B, 25; WDGV-3; and WDLV-303 As a result of a word processing formatting problem, attached are clarified pages 1 and 2 of our December 11, 1984 (5211-84-2292) Attachment 2.
The existing splices have been replaced by qualified Raychem splices. The electrical interfaces have been confirmed; the motor operators have been shown to be acceptable for the plant specific application; and outstanding open items have been resolved. Therefore, MUV-2A/B, 25; WDGV-3; and WDLV-303 are now considered environmentally qualified for radiation.
h) ICV-2 The existing splices have been replaced by qualified Raychem splices. The electrical interfaces have been confirmed, the motor operators has been shown to be acceptable for the plant specific application and outstanding open items have been resolved except the replacement of the limit switches. Therefore, ICV-2 will be considered to be environmentally qualified for radiation when the limit switch replacement is complete.
-1) DHV 1 &-2 The torque and limit switches will be replaced by March 31, 1985. Therefore, DHV 1 & 2 will be considered qualified for radiation when this replacement is complete.
E.
Samuel Moore Instrumentation Cable GPUN has researched the environmental qualification documentation of this cable and has determined this cable to be environmentally qualified (EQ-TI-140) for radiation.
6.
-HPI Pump-011 System MUP-2A/B/C motors have been qualified to the D0R Guidelines for LB LOCA radiation dose (EQ-TI-121). GPUN has confirmed that the electrical, interface qualification is established and that these motors are-environmentally qualified. The associated pressure switches'(PS-479 A/B/C)will be replaced by March.31,1985 with ASC0' pressure switches
_(SA21AR) which are considered-qualified-(EQ-TI-147),for radiation.-
v 7.
HPI Flow Indication & RCP Seal In'jec' tion' Flow--Indication:
MU-23-DPT 1,2,3 & 4-and MU-42-DPT will be'replac'ed.by' March 31, 1985 with Rosemount differential pressure transmitters _Model ll53HB which are qualified-(EQ-TI-149) for radiation.. In our letter dated December 11, 1984-(5211-84-2292).GPUN provided JIO-TI-84-3 which contained a.
.-typographical error for the existing transmitters-(Note: The maximum integrated (aging) dose in 40 years should be 1.8 x 109 rads vice 1.8 x 103 rads.).
T-t8.
LPI Flow Indication
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DH-1 DPT 1&2 will'be. replace e March 31 1985 with Rosemount
- transmitters _ which are qualif ud '(EQ-TI-149) for radiation.
9.c Makeup Tank ~ Level-Indication MU-14-LT will-be~ replaced by March 31, 1985 with a Rosemou'nt transmitter which-is. qualified-(EQ-TI-149) for radiation.
i 7 e_
Transorb Diodes (ICV-3, MUV-3, MUV-18)
These diodes have been successfully tested for the LBLOCA environment and GPUN has the test report on file (EQ-TI-133). The test report has been reviewed and as the result of a low current leakage anomaly displayed during the test, these diodes will be replaced with low leakage TransZorb i
diodes of the same model by March 31, 1985. Following replacement, these
- diodes will be considered qualified for radiation. The TransZorb diodes were inadvertently left off the SBLOCA Master List due to a clerical error.
- 11. Weed RTD's Similarity between the installed RTD's-(A0 611-18) and those tested (A0 611-1A) has been established in the file.(EQ-TI-136) by documentation from Weed. Details and drawings are on file in our document center.
These RTD's'are now considered qualified for radiation.
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- 12. GE Electrical Penetrations 4
General Electric is preparing an EQ file on these containment electrical penetrations. The file is expected to be completed by March 1, 1985.
Discussions and a letter from GE concludes that there is a high degree of confidence that these penetrations are qualified for radiation.
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SetcHis_Keu issanLEQ_De f I c i enc 1 es CRC _IIR_19. IIA. IIR_Cateser.les AmumitoteutEnter._0ser1Lets Prevfous TER Tag Description N#C Prevleus Proposed Ngs.
Ng$.
(ModtLetc.1 Category octic1cocles Resolution 1
(WDG-V3]
MVA SM800 II.A
- 2. 3, 4 For Limitorque motor operators. slmliar-3 (DH.V1A2]
MVA SMS3 II.A
- 2. 3. 4 ity to units tested, aging analysis and 6
[CFV-28, 3AA38]
MVA SM8000 I I.. A -
2
- 3. 4 qualtfled Itfe are estabitshed in the 7
(
, CA-VI.3.4A/S CFV2A]
MVA SNB000 I I. A..,,
- 2. 3. 4 Limitorque generic report 80058. PWR I
IIR
[CA-VI)]
MVA SMB000 II.k 4
- 1. 2. 3. 4 Report 600456, purchase orders and pirot 120 (MU-V25]
MVA SMB00 II.A 1, 2
- 3. 4 walkdowns. Material discrepancies fotmd
[W DLW-303)
MVA SNb000 during the plant walkdown are documented and are scheduled to be corrected and in complete compilance by March 1985.
I 2
(AH V1BalC)
MVA SMB2 II.A
- 1. 2. 3. A Aj} Of ghg y[p Ng, ) ggggggngg gpg]y gg I
these in containment motor operators.
7 IC v2 MVA SMe000 II.A
- 2. 3, 4 11g MU.v2A/B MVA SM800 II.A
- 2. 3. 4 The Dings motor brake model 6-71010-6 is qualifted by stellarity to model 6-63009-50 which was tested as described in test report 600198 (f-C2232-01). Both models are constructed of the same materials and rated for approutmately the same torque, but differ only in stre.
The Dings brake is qualtfled to 1 x 10' rads by GPUN analysis (material list From vendor) which is documented in GPUN calculation IISIX-5350 01s Rev. 1.
This calculation shows Polylmide (not a,
Polyamide) as the 1 tatting material (EPRI NP-1558 p C-2].
The spectfled 2 x 10' rads total integrated dose for these motor operators is based upon the DDR Guidelines.
This in-containment motor operator (Irv-2) is located below the ficod level.
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Evaluation of operating time in process TN 1 x u-p@
ME Sw s
Settifie Eeulament EO_Def1eienties A.
Lim 1 Lor _RugJ ator Geerators - Continued Previous TER Tag Description NRC Previous Proposed NCS-NOS.
IMedtLtLC.d CAlt90ry Def_itit0Cjts Rt50lELj0n 10 (FW V5B]
MVA 583 II.A
- 1. 2. 3, 4, 7a 11 (IT-V2AR28]
MVA SHBO II.A
MVA SMB00 II.A 1, 2, 3, 4, 7a apply to these out-of-containment motor
.15
[EF-VIAAB]
HVA SMB000 II.A
- 1. 2, 3, 4, 7a operators except that these have Reliance class B insulated motors.
These motor operator are quallfled by Limitorque Report 80003. A thermal lag analysts which shows that the operator will operate through the Intermediate Bldg MStB temperature spike of 322*f was developed (GPUN Calc. C-1101-424-5350-001 Rev. 2). t t
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l 5211-84-22 17 Page 2 of 14 SBLOCA MASTER LIST System Make-up and Purification Device Plant ID No.
Description Location Manufacturer MU-P1A Pump Motor AB Westinghouse MU-PIB Pump Motor AB Westinghouse MU-PIC Pump Motor AB Westinghouse MU-P3A Pump Motor (Mcin Oil)
AB General Electric MU-P3B Pump Motor (Main 011)
AB General Electric MU-P3C PumpMotor(MainOil)
AB General Electric MU-V2A Letdown cooler outlet RB Limitorque Valve Motor Operator
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MU-V2B Letdown cooler outlet RB Limitorque Valve Motor Operator LSA/MU-V3 Letdown cooler outlet AB NAMCO Valve Limit Switch LSB/MU-V3 Letdown cooler outlet AB NAMCO Valve Limit Switch SV/MU-V3 Letdown cooler outlet AB ASCO Valve Solenoid Valve MU-V14A Pump Suction From BWST AB Limitorque Valve Motor Operator MU-V14B Pump Suction From BWST AB Limitorque Valve Motor Operator MU-V16A Pump discharge AB Limitorque Valve Motor Operator MU-V168-Pump discharge AB Limitorque Valve Motor Operator MU-V16C Pump discharge AB Limitorque Valve Motor Operator
-MU-V160 Pump discharge AB Limitorque.
Valve Motor Operator.
A 5211-84-2217 Page 15' SBLOCA MASTER LIST Device Plant ID No.
. Description Location Manufacturer MVP 2A,B,C.
MU Pump Motor AB General Electric (Aux. Lube 011)
PS 479 A,B,C*
Pressure Switches AB ASCO MU Aux. Lube Oil Pump MU-23-CPT-1,2,3,4*
HPI Flow Transmitters AB Rosemount MU-42-DPT*
Seal Injection Flow AB Rosemount Transmitters MU-14-LT*
Make Up Tank Level AB Rosemount LT-778 DH-l-DPT-1 & 2*
LPI Flow Transmitters AB Rosemount Suppression Diodes AB TransZorb t
Presently being replaced with-a new qualified compcnent l'
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