05000289/LER-1980-018-01, /01T-0:on 801017,while Replacing Coils for Asco Solenoid Valves Per IE Bulletin 79-01A,coils Were Discovered to Conflict W/Station Voltage Range.Caused by Incorrect Purchase Order for Coils

/01T-0:on 801017,while Replacing Coils for Asco Solenoid Valves Per IE Bulletin 79-01A,coils Were Discovered to Conflict W/Station Voltage Range.Caused by Incorrect Purchase Order for Coils

ML19339B677
Person / Time
Site:	Crane
Issue date:	11/04/1980
From:	Mitchell D METROPOLITAN EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19339B675	List: 05000289/LER-1980-018, Forwards LER 80-018/01T-0 05000289/LER-1980-018-01, /01T-0:on 801017,while Replacing Coils for Asco Solenoid Valves Per IE Bulletin 79-01A,coils Were Discovered to Conflict W/Station Voltage Range.Caused by Incorrect Purchase Order for Coils
References
IEB-79-01A, IEB-79-1A, LER-80-018-01T, LER-80-18-1T, NUDOCS 8011070426
Download: ML19339B677 (6)

LER-1980-018, /01T-0:on 801017,while Replacing Coils for Asco Solenoid Valves Per IE Bulletin 79-01A,coils Were Discovered to Conflict W/Station Voltage Range.Caused by Incorrect Purchase Order for Coils

Event date:
Report date:
2891980018R01 - NRC Website

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EVENT DESCRIPTION AND PROB A8LE CONSEQUENCES h I

I o 6 2 I I While replacing coils for ASCO solenoid valves per Bulletin 79-OlA, M was 1

ITTT) I determined the coils h'ad an operating rance of 102 to 126v whereas the station I o 6 4 I I voltace -

s from 107 to 137v.

Additionallv. ASCO solenoid valves for oilot the instrument air

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Ioisi 1 operators have a maximum safe working pressure of 75 psi but lots1Isucolv rances from 85 to 95 osi.

These items are considered reportable per section J

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CAuSE DESCRIPTION AND CORRECTIVE ACTIONS h Iito1lThe ourchase order for the replacement coils was incorrect.

The discontinuation I

. Iiii1Iof M talline reolacement coil was the ie=ediate corrective action.

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i t71icorrective action vill be to replace the coils with other coils with an operating i

I ' ! a 1 I em of on *e 140e Ed to replace the valves or reduce the air pressure.

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ME OF PREPARER PHONE:

Att:chment 2 TLL 562

NARRATIVE

R'EP0kT

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LER 80-018/OlT-0 l

Event Description and Probable Consequences It has been determined that the replacement coils for ASCO Solenoid Valves being installed in response to IE Bulletin 79-OlA are rated at 120v DC with a normal operating range of 102 to 126 volts.

The station battery voltage ranges from 107 :o 137 volts.

The coils could potentially fail if they were maintained at voltages above their normal operating range. is a list of thirty (30) air operated valves that use ASCO DC Solenoid Valves for pilot operators that are having their present coils replaced by the 120v DC coils.

Of the thirty (30) valves listed, it was determined that in case of coil failure, eight (8) valves would be in a less conservative position than required by the engineered safeguard design.

In addition it was determined eleven (11) outside containment isolation valves (see Attachment 4) use ASCO Solenoid Valves for pilot operators with a maximum safe working pressure of 75 psi.

The instrument air which suppliep the ASCO solenoid valves is 85 to 95 psi. This overpressurization codd affect the solenoid valves' performance, potentially preventing the containment isolation valve from performing as designed.

These problems are considered reportable per Technical Specification paragraph 6.9.2.A(9).

As of October 27, 1980, no valve malfunctions have been experienced at THI-l oecause of these deviations.

Unit 1 was in cold shutdown wh'en it was discovered that 120v DC coi3s were l

being installed and that the maximum working pressure of the instal.ed ASCO solenoid valves was 75 psi.

Cause Description and Corrective Action The purchase order for'the replacement coiln incorrectly ordered the wrong voltage coils. At least one valve, AH-VlD, had an incorrect coil originally.

The cause of the problem with the' maximum working pressure was due to original design error.

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The im=ediate corrective action has been to discontinue the installation of the 120v DC coils. Long ter= corrective action concerning the coils will be to replace all 120v DC coils with 125v DC' coils that.have a normal operating range of 90 t-140 volts.

Long term corrective action concerning the maximum working pressure will be to replace the solenoid valves with valves that have a maximum working pressure equal to or greater than t':e instrument air supply, or to provide air line regulators to reduce the a;r pressure.

The schedule for completion of the corrective action is prior to restart or upon availability.

This schedule is justified because valve failure dur,ing cold shutdown would not adversely affect public health and safety.

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Pcgo 2 Attcchment 2 The remaining valves with safety functions will be inspected to assure that the coil voltage is correct and that the valves have the correct pressure r. sting.

As stated, no valves have failed to this date.

However, the following information exists concerning the above equipment:

Replacement Coils:

ASCO 120v DC Model No.

103-A33-lD (12) 74-073-1D (11) 103-A34-lD

( 4) 97-617-1D

( 2) 96-671-lD

( 1)

Air Solenoid Valves: ASCO, 3-Way, Model No. - HT8300 37 RF 4

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t Attcchment 3 TLL 562 CONTROL POSITION OF MAIN VALVE REQUIRED SAFECUARD VALVE NO.

FUNCTION OF Tile VALVE DRAWINC IN CASE OF COIL FAILURE POSITION OF HAIN VALVE HUV3 Letdown isolation at Containment Vessel 209-022 Open Closed' d ~-

HUV26 RCP Seal letdown isolation at Containment 209-025 Open Closed Vessel CMV1 Containment Monitoring 209-051 Closed Closed CMV2 Containment Monitoring 209-052 closed Closed Containment Monitoring 209-053 Closed closed CMV3 CMV4 Containment Monitortug 209-054 Closed Closed

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WDLV534 R.B. Sump Outlet Isolation Valve, 209-306 Closed

. Closed WDLV535 R.B." Sump Outlet Isolation Valve 209-306 Closed Closed WDLV304 R.C. Drain Pump Outlet Valve 209-302 Closed Closed ICV 3 I.C.

return outside containment penetration 209-077 Open Closed -

isolation ICV 4 I.C. supply outside containment. penetration 209-078 Open Closed isolation ICV 6 C.R.D. Cool. Penetration isointion 209-079 Open Closed AllVIA RB Purge Outlet 209-038 Closed Closed AliVID RB Purge Inlet.

209-039 Closed Closed RB-V7 Reactor Building air cooling Coils' Ret.

209-055 Open closed

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Penetration Isolation q

CFV19A C.V. Isolation Valves for HU to C.F. Tanks 209-024 Closed closed P=650 PSIFC

• CFV19B C.V. Isolation Volves for MU to C.F. Tanks 209-324 Closed Closed P=650 PSIFC 1

CFV20A-C.F. tanks sample / Isolation Valves P=650 209-023 Closed Cloged l

PSIFC CPV20B C.F. tanks sample / Isolation Valves P=650 209-044 Closed Cloped PSIFC y

I Attach 2:nt 3 TI.I. 562

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CONTROL POSITION OF HAIN VALVE REQUIRED SAFECUARD VALVE NO.

FUNCTION OF TIIE VAI.VE '

11. MING IN CASE OF COIL FAILURE POSITION OF HAIN VALVE WDGV4 RB Vent lleader Outside Isolation 209-31T Closed Closed CAV 189 Demineralized water R.B.' Isolation Valve Fluid 209-377 Closed Closed Blocked Spring-to Close GAV 5A OTSG "A" Feedwater Sample Containment Isolation 209-358 Open Closed CAV SB OTSC "B" Feedwater Sample Containment Isolation 209-359 Open Closed CAV2 R.C. Sa,mple conta'inment Isolation 209-354 Closed closed NSV32A R.B. Cooling Units fan Motor Cooler Inlet 209-083 Open Open Isola't lon NSVS2B R.B. Cooling Units fan Motor Cooler Inlet 209-084 Open Open Isoll tion NSV52C R.B. Cooling Units fan Motor Cooler Inlet 209-085 Open Open Isoldtion NSV53A R.B. Cooling Units fan Motor Cooler Inlet 209-083 Open Open Isolation NSV53B R.B. Cooling Units fan Motor Cooler Inlet 209-084 Open Open Isolation NSV53C R.B. Cdoling Units fan Motor Cooler Inlet 209-085 Open Open Isolation a

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- Attrchment 4 TLL 562

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VALVE TAG NO.

ASCO MODEL NO.

1.

CFV 19A HT 8300 B7 RF

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2.

CFV 19B HT 8300 B7 RF 3.

CFV 20A HT 8300 B7 RF 4.

CFV 20B HT 8300 B7 RF 5.

WDG V 4 HT 8300 B7 RF 6.

NS V 52A HT 8300 B7 RF 7.

NS V 52B HT 8300 B7 RF 8.

NS V 52C HT 8300 B7 RF 9.

NS V 53A HT 8300 B7 RF 10.

NS V 53B HT 8300 B7 RF 11.

NS V 53C HT 8300 B7 RF

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