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Final Deficiency Rept DER 83-48 Re Valcor Solenoid Outside Containment Isolation Valves Subjected to Excessive Heat. Initially Reported on 830726.Containment Sample Isolation Valves Refurbished.Item Not Reportable Per 10CFR50.55(e)
	ML20081K582
Person / Time
Site:	Palo Verde
Issue date:	10/28/1983
From:	Van Brunt E; ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T; NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
	10CFR-050.55E, 10CFR-50.55E, ANPP-28132-BSK, DER-83-48, NUDOCS 8311100179
	Download: ML20081K582 (36)
	v • d • e

.

1 Arizona Public Service Company PHOENIX, ARIZONA 85036 Po BOX 21666

October 28, 1983 ANPP-28132-BSK/RQT U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director, Division of Resident, Reactor Projects and Engineering Programs

Subject:

Final Report - DER 83-48 A 50.55(e) Reportable Condition Relating to Valcor Solenoid Valves Subjected To Excessive Ileat File: 83-019-0 26; D.4. 3 3. 2

Reference:

A) Telephone Conversation between P. Johnson and R. Tucker on July 26, 1983 B) ANPP-27597, dated August 19, 1983 (Interim Report)

Dear Sir:

At tached is our final written report of the deficiency referenced above,'

which has been determined to be Not Reportable under the requirements of 10CFR50. 55( e).

Very truly youro, h

C Q)

A LR

-C E. E. Van Brunt, Jr.

APS Vice President, Nuclear _ Projects Management ANPP Project Director j

EEVB/RQT:ru Enclosure I

cc: See Page 2 l

8311100179 831028 gDRADOCK 05000528 PDR M'

r' l

Mr. T. W. Bishop DER 83-48 Page 2 l-cc:

Richard DeYoung, Director Of fice of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. '20555 T. G. Woods, Jr.

G. C. Andognini l'

J. A. Roedel D. B. Fasnacht l

A. C. Rogers B. S. Ka pla n '

W. E. Ide J. Vorees l

J. R. Bynum

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D. D. Green /P. P. Klute A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Patterson R. W. Welcher R. M. Grant f

D. R. Hawkinson L. E. Vorderbrueggen 1

G. A. Fiorelli S. R.-Frost 4

J. Self

}

D. Canady-1 Records Center lastitute of Nuclear Poser Operations 1100 Circle 75 Parkway - Suite 1500 l

Atlanta, Georgia L30339 I

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l FINAL REPORT - DER 83-48 DEFICIENCY EVALUATION 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNIT 1 I.

Condition of Description During prerequisite testing it was revealed that Valcor solenoid outside containment isolation valves installed on sampling lines and identified as tag numbers 1-J-SCA-UV-223 and 1-J-SGA-UV-225 exhibited electrical wiring damage. The report indicates various other Valcor solenoid valves of this type located throughout Unit 1 exhibited similar conditions.

The condition was described as burned, brittle and melted insulation on field wiring terminations to the valve solenoids.

Also reported was damage to 0-rings used as environmental seals in the non pressure boundary sections.

The overheated wiring connections were attributed to heat generated by continuous operation of the solenoid coils. The deterioration of the EPR 0-rings was attributed to a combination of electrical coil heat and process temperature.

All Valcor solenoid valves were supplied by Combustion Engineering (C-E) and field wired by Bechtel Power Corporation. The inadequate installations are attributed to lack of documentaton indicating to Bechtel that high termperature connectors and wiring were required for this type of installation. This information is currently contained in the qualification report.

II.

Analysis of Safety Implications The subject valves are installed on Unit 1 steam generator sample lines, to provide outboard containment isolation of the sample lines.

The Valcor solenoid valves are designed to fail " closed" during a design basis event (DBE), therefore loss of electrical power (de energized) would provide spring action to position the valve

" closed" and satisfy its safety-related function.

Based on the above, this condition is evaluated..s not reportable, under the requirements of 10CFR50.55(e), since if this condition were to remain uncorrected, it would not represent a significant safety condition.

Final Report DER 83-4 8 Page 2 l

III.

Corrective Action A.

C-E has previously issued FAR Change Notice 14273-708, via C-E letter V-CE 18212 (Attachment I) to refurbish inside containment sample isolation valves with high temperature connectors, lead wires and 0-rings.

Although this design change is required for harsh environmental qualification, it will envelope ti.e corrective action necessary for the outside containment Valcor valves identified by DER 83-48.

This action for inside containment valves is being implemented by Bechtel on DCP's:

ISM-SG-300 1SM-SG-301 ISM-SS-300 2SM-SG-300 2SM-SG-301 2SM-SS-300 3SM-SG-300 3SM-SG=301 3SM-SS-300 B.

C-E letter V-CE-18897 (Attachment II) addressed EPR 0-ring heat degradation on valves located in a non-harsh environment, and indicates that 0-ring failure will not affect ~the encapsuled solenoid mechanism f rom performing its safety-related function. Bechtel engineering will replace existing electrical hardware on Valcor solenoid valves, not refurbished by C-E, with high temperature - wiring connectors and issue the following DCP's for Units 1, 2, & 3:

ISE-SG-095 2SE-SG-095 3SE-SG-095 C.

NRC SE-2209 will be dispositioned by implementation of DCP 1SE-SG-095.

A copy of this report will be transmitted by CE.

CE will.be requested to review the CE/Bechtel design interface documentation for similar requirements which may have been found during qualification testing.

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' C-E Power Systems Tel 203/6881911 ATTACHMENT I to DER 83-48 Combustion Engineering. Inc.

Telex 99297 (5 pages) 1000 Prospect Hill Road Windsor, Connecticut 06095 TYNiS S

V-CE-18212 April 26, 1983 g g - 3c c

-?C/

Mr. W. G. Bingham Bechtel Power Corporation 12400 East Imperial Highway Nomalk, CA 90650

Subject:

DCP Input for Valves SS-203, 204, 205; SC-204, 211, 220, 222, 224, 226.

Changes Required per NUREG-0588 TMI Task 77C

Attachment:

(1) DCP Input for Valcor Inside Containment Valves

Dear Mr. Bingham:

Attachment (1) is provided for your use in preparing a DCP for the subject modi fication.

This infonnation was telecopied to the C-E site office March 31, 1983 as V-PAK-322.

Please notify the C. site office prior to work on these valves.

This subject is Item #133 on the "High Priority Material Delivery" list. ekdf7& '

sce w:.

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Very truly yours, or P N '83 C. Ferguson E

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ARIZONA PROJECT - UNIT 1 DESIGN CHANGE PACKAGE DCP Number:

Issue Date FAR

Reference:

14273-708

Subject:

Valcor Solenoid Operated Valves Vendor: Valcor Engineering Corp.

CE PO Number: 9872170-14273 Supplement 7 Valve Tag Numbers: 55-203, 204, 205 SC-204, 211, 220, 222, 224, 226 D_e_scription of Valve Function The sampling system (SS) valves serve as in containment block valves on the 3/8" sample lines which penetrate the containment building. The secondary chemistry control (SC) valves serve as inside containment block valves on the t

1/2" lines to the outside containment sample heat exchangers Both the SS and SC line penetrations have Valcor outside containment block ve.Ives but the outside containment valves are not effected by this DCP.

Reason for Changes Valcor's experience and the qualification test program uncovered potential problem areas for successful cogletion of the environmental qualification program. As a result modifications were made to assure the hermetic seal of the electrical internals. Since the solenoid valves have successfully cogleted the qualification the valves at the site must be refurbished to I

conform with the tested valves in order to be qualified in accordance with NUREG 0588.

The modifications required consist of:

1.

Replace the bonnet to solenoid coil housing 0-ring with a Grafoil 0-ring (gasket) called out as item 7 on References (1) and (2).

2.

Replace the solenoid coil housing to position indicator housing 0-ring with /

a silicone 0-ring called out as item 10 on References (1) and (2).

/

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l 3.

Replace the position indicator housing with one that incorporates a sealed Conax Connector including 72 inches of lead wire. The customer electrical l

interface with the solenoid is the lead wire end.

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Installation Proceduro Disconnect the electric power and remove the existing position indicator housing by taking out the 4 hold down screws - part numbers 25 & 26. Thi s assembly cover will not be reused. Remove and discard the cover 0-ring - part number 10.

Lf the wires to the terminal board are not number tagged, then mark each wire with its respective terminal number before removing the wire.

After the cover has been removed and the wires disconnected, remove the 4 coil hold down screws and washers - part numbers 8 and 9.

Remove and save spacers - part number 6.

Lift the coil switch assembly off the stem post and remove and discard 0-ring - part number 7.

Replace 0-ring - part number 7 with the Grafoil ring gasket supplied with refurbishment.

Note:

Grafoil gaskets are very fragile.

Reassemble the solenoid coil and replace the hold down cap screws, washers and spacers - parts 6, 8 and 9.

Replace 0-ring. The new replacement cover will be complete with wiring. Connect the lead wires to the terminal board and replace the cover on the valve.

Replace and tighten the cover bolts and nuts - items 25 & 26. This will complete the Valcor valve refurbishment to the Bechtel wire connection interface.

It is important to have a Valcor field representative present when any work is performed on the NSSS supplied Valcor valves to assure the work performad is cor:patable with the manuf acturers warranties.

References:

(1) Valcor Engineering Corporation drawing 208160001, Rev. B Titled: Valve, Solenoid, Position Indication, Nuclear Service - Model V526-5683-45 (2) Valcor Engineering Corporation drawing 208160002, Rev. B, Titled: Valve, Solenoid, Position Indication, Nuclear Service - Model V526-5683-46 Reviewed by:

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ATTACHMENT II to DER 83-48

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C-E Power Systems Tel. 203/688-1911 (29 pages) m.

Combustion Engineenng. Inc.

Telex 99297

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Bechtel Power Corporation

- Q 12400 East Imperial Highway

-4 Norwalk, CA 90650 un no asca es

Subject:

Arizona Project Deficiency Evaluation Report (DER) 83-48

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Valcor Valves - Outside Containment u

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References:

(A) Bechtel letter B/CE-E-45543 dated 8/3/83 5

(B) Report MR 526-5683-6-2 Hot Fluid Heat Rise and Cycle-Tgists-on Solenoid Valve Assemblies

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Enclosures:

(1) Dwg. Valcor Eng. Corp V526-5683-7 cc (2) Report MR 526-5683-6-2 (3) Letter B/CE-E-45543

Dear Mr. Bingham:

Bechtel has issued a DER document, Reference (A), on excessive heat at the terminal block of Valcor valves. The problem relates to:

1.

The deterioration of the 0-ring seals, items 7 and 27 of the attached Valcor drawing V526-5683-7 which is a typical drawing of these valves.

2.

Insulation on the wiring and ring tongue connector attached to the terminal block is brittle or melted.

Bechtel suggests that this problem is a 10CFR50.55 deficiency.

CE does not agree that this issue is reportable.

Valcor solenoid valves are designed for continuous operation in an ambient 0

temperature of 120 F.

Operating temperatures are expected to be:

Continuous Coil Temperature

-l 327

.' Terminal Block O

26S F

- OWiring Connector to Valve Housing Valcor valves were qualified for continuous energization at these operating l

temperatures, Reference (B). Fluid conditions during the qualification testing l

were 650 F.

Page 2 to V-CE-18897 Bechtel performed the field wiring of these valves and may have used wiring and c6nnectors which do not have the appropriate temperature rating. Wiring w,ith a higher insulating temperature rating could be considered. Lead wires and wire connectors were not supplied by Valcor as part of these NSSS valves.

CE is aware of the EPR O-ring deterioration due to heat but failure of 0-rings will not effect outside containment qualification where chemical spray is not a consideration. The EPR O-rings are being replaced with silicone 0-rings on the Valcor valves inside containment. (DCP's SG-300, SG-301, SS-300). The outside containment valve 0-rings could also be changed to silicone but at considerable expense. Replacement of these 0-rings is not considered necessry.

If there are any additional questions, please feel free to ask.

Very truly yours,

^t\\

Om C. Ferguson, 4 Project Manager CF/GPB:jlb V-PAK-398 F47585 cc: Messrs:

E. E. Van Brunt, Jr. w/e G. C. Andognini w/e J. Vorees w/e W. H. Wilson R. H. Holm J. W. Dilk G. A. Butterworth S. N. Mager D. B. Amerine w/e W. L. MacDonald J. R. Bynum

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f APPENDIX VI REPORT NO. MR 526-5683-6-2 HOT FLUID HEAT RISE AND CYCLE 4

TESTS ON SOLENOID VALVE ASSEMBLIES, V526-5683-6 AND V526-6042-1A l

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1.0 OBJECT To determine the maximum operating temperatures of the subject valves, while continuously energized and flowing 6500F water at a flow rate of 1 GPM; and to perform 10,250 cycles of operation at these fluid conditions.

2.0 CONCLUSION

Both valves completed 10.250 cycles of' operation with water at 6500F, and flowing at a nominal 1 GPM.

The average, minimum, and maximum recorded valve temperatures are given in Tables I and II.

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TABLE I V526-5683-6 Temperature Profile 42 VDC 120 VDC nergization Voltage:

Item Average (High/ Low)

Average _

(High/ Low) onnector 0-Rins 255 (258/254) 282 (284/275) ccessory Ambient 289 (291/283) 323 (325/320) lange 0-Ring 345 (347/340) 395 (398/390) olenoid Shell 399 (401/392) 459 (466/455) olenoid -Bonnet 0-Ring 560 (562/553) 578 (582/574)

ody Surf ace 588 (592/580) 592 (594/590) 498

oil Winding (Calcula t,e d )

401

'est Fluid 651 (653/649) 651 (652/650) mbient 126 (128/123) 125 (128/123)

TABLE II V526-6042-1A Temperature Profile

nergization Voltage:

42 VAC 120 VAC Average (High/ Low)

Ave? age..

(High/ Low)

ennector 0-Ring 243 (246/236) 268 (274/264) iccessory Ambient 285 (288/280) 327 (329/325) lange 0-Ring 319 (324/314) 368 (371/365)

(345/340) 396 (399/394) iolenoid Shell 343 iolenoid-Bonnet 0-Ring u44 (447/438) 485 (487/u82) 3ody Surface 562 (566/557) 566 (567/565) 432

oil Winding (Calculated) 345

.est Fluid 651 (653/649) 651 (652/650) imbient 126 (128/123) 125 (128/123)

MR 526-5683-6-2 s

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o amO OfMER Of 5CLOSumES ARE PROPERTY OF WALCom ENGINECmtNC COm80m AT80m.

OS AWING. OEllCM 30 DIscussIog Temperature profile tests were performed on-two l

valves, P/N 's V526-5683-6, and V526-6042-1 A serial numbers 14 and 50 respectively.

31 Test Performance _

The tests were performed by Combustion Engineering Corporation (C-E) of Windsor, Connecticut.

Their report, number TR-ESE-464, dated April 15, 1982 is attached to this report as Appendix I.

Thermocouples were installed.onto the valves by Valcor Engineering Corporatio'n, as shown in Figure 1.

The test was set up as detailed in the C-E report in Appendix I.

i The test sequence was performed in the following il manner:

(1)

Both valves were energized open with 120V, then the voltage was reduced to 42 volts.

The 42V test was performed to determine the effects of reduced coil voltage on the fin 1 temperatu're.

l MR 526-5683-6-2 j

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(2)

The test loop was brought up to operating temperature (6500F nominal) over a nine (9) hour period.

Figures 2 and 3 are plots of the

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temperatures during this heating period.

During the heat up period, the solenoids were energized at 42 volts,, and the flow rate through each valve was 1 GPM.

(NOTE:

The column labeled $T at the right hand margin in Figures 2 and 3 are the temperature differentials between adjace'nt plots at the stabilized temperatures.

The plots are made from the data given on Data Sheet No. pages 1 to 12 of the C-E report in Appendix I.

(3)

The steady state fluid temperature (6500F),

ambient temperature (1260F), and flow rate (1 GPM) were maintained for 7 1/2 hours after.

stabilization.. This data is recorded on Data Sheet No. pages 13 to 29 in the C-E report.

c (4)

Solenoid voltages were increased to 120 volts, and maintained for five (5) hours.

This data is recorded on Data Sheet No. pages 30 to MR 526-5683-6-2 Sheet 5 14273 PE 5733 REV 01 PAGE C3ll 0F C37

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39 in the C-E report.

This time duration was sufficient to establ.ish thermal equilibrium.

Following the above steady state tests, both j

(5) valves were cycled for 10,250 cycles.

Test voltage was 120 volts, flow rate was 1 GPM, i

and water temperature was 6500F, During the cycle test, counters were wired into each position indicating switch', to monitor switch

^

[ witch' operation.

Throughout the test, no i

malfunctions were encountered.

The life cycle 3-test. data is recorded on Data Sheet No.

i pages 1 to 30 in the C-E report.,

(6)

At the conclusion of the cycle tests, testing was termina ed.

At the end of 10,250 cycles, the component temperatures ranged from 3 5 to 4.5 percent lower than the steady state test conditions.

(Compare 10,250 cycles" temperature I

' the "zero cycles" and "

data in the Section 4.0 Test Results (4) paragraph.

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approximately equal to a continuously powered condition.

32 solenoid Coil Calculated Temperatures 3 2.1 v526-5683-6 Solenoid coil average temperatures were calculated using the room ambient coil resistance, and the applied voltages and resulting currents at the stabilized te=perature conditions.

Coil calculated temperatures are made using the solenoid current data in Section 4.0 Test Results (2), (3) and (5), and the equations that follow.

3.2.1.1 Coil Resistance coil Resistance is calculated by the following equation:

(1)

R = V/I Where:

R = Resistance (ohms) l V = Applied voltage (volts)

I = Current flow (amperes) l j

J MR 526-5683-6-2 14273 PE 5733 REV 01 PAGEOl3 0F CW

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I 3.2.1.2 coil Temeerature_

The average coil temperature is calculated by equation (2):

(2)

RT=RA [l+(.00393)(5/9,) x (T-730F)]

Rearranging terms-(3)

T = (((K IR ) -1)/.00218) + 730F T

A Where:

T

= Calculated Coil Temperature (OF)

R7 = Coil Resistaa:e at stabilized maximum heat rise tcaperature calculated by Equation (1) (ohms)

RA = Coil Resistance at 730F (ohms)

L1 3.2.1.2.1 Coil Temperature at 120V Using equations (1) and (3), and the test data from Section 4.0, Test Results (2) for V526-5683-6:

~

Coil Resistance at 120V Using equation (1) and the current from Section 4.0, Test Results (3).

,e R..= 120V/0.70A = 171.4 ohms

: o.

MR 526-5683-6-2 Sheet 8 14273 PE 5733 REV 01 PAGEc3I+ OFC7iO

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Calculated Coil Temperature Using equation (3), the calculated coil resistance, and the coil resistance of 89 ohms at 730F from

~

Section 4.0, Test Results (5).

(((171.4 ohms /89 ohms)-1)/.00218) + 730F T

=

((1.926-1)/.00218) + 730F T

=

(0.926/.00218) + 730F T

=

424.80F + 730F = 4980F T

=

3.2.1.2.2 coil Te=cerature at 42v Using equation (1) and the current from Section 4.0, Test Results (2):

coil Resistance at 42V R = 42V/0.275A = 152.7 ohrs '

s Calculated Coil Temocrature Using equation (3) and the rsaistance calculated above:

(((152.7ohns/89 ohms)-1).00218) + 730F T

=

((1.715-1)/.00218) + 730F T

=

~

(0.716/.00218) + 730F T

=

328.40F + 730F = 4010F_

T

=

1 l

MR 526-5683-6-2 j

Sheet 9 14273 PE 5733 REV 01 PAGE Gil OFC720

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ODA'amC. OCSICM 3 2.2 V526-60u2-1A The coil temperature calculations for this valve must account for the rectifier resistance when calculating the average coil temperature.

3 2.2.1 Rectifier Resistance The rectifier resistance is calculated by the following equation:

(4)

RTOT V/I Where:

RTOT.= Total coil and rectifier resistance (chos)

V = Applied voltage (V RMS)

I = Measured current flow (A RMS)

The rectifier resistance is calculated from the I

v c.i t a g e and current data in Section 4.0,, Test i

Results (5) for the V526-6042-1A valve.

j AT C2V INPUT _

RTOT = 32V/.409A = 102.6 ohms AT 120V INPUT _

RTOT

120V/1.188A = 101.0 ohms Average Total Resistance (102.6 + 101)/2 = 101.8 ohms RTOT Average =

l t

MR 526-5683-6-2 l

Sheet 10

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14273 PE 5733 REV 01 PAGECSI6 0 fob 7

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unauThomegEo usE, naamuraCTURE OR REPROQuCTeOm th coast 40. OC$8CN AwO OTHER OfSCLOSURES ARE PRORERTY OF V ALCO2 ENGINEERtMG CORRQR&ToCg, The net rectifier resistance is the tota 1 resistance (101.8 ohms) minus the coil winding resistance (89 ohms), or RRECT = 101.8 - 89 = 12.8 ohms The 89 ohms value is the measured resistance of the..

solenoid on valve V526-5683-6, as given in Section i

4.0 Test Results (5').

This value (89 ohms) is used because both valves use the same solenoid coil.

3 2.2.2 Coil Temoerature at 120V Using equations (1), (3) and accounting for the rectifier resistance, the average coil temperature is calculated as follows:

Resistance at 120V AC Using equation (1) and the current from Sectin 4.0, Test Results (3) for V526-6042-1A:

I l

q R o7 = 120V/0.7A = 171.4 ohms i

T

_ The net resistance is RTOT minus RRECT*

R = 171.4 ohms - 12.8 ohms = 158. 6 ohms

'$1 MR 525-5683-6-2 sheet u 14273 PE 5733 REV 01 PAGE C317 0FO57

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Calculated Coil Temeerature Using equation (3), the net resistance from above, and the coil resistance of 89 ohms at room temperature:

T = (((158.6 ohms /89 ohms)-1)/.00218) + 730F T= ((1.782-1)/.00218) + 730F T = (0.782)/.00218) + 730F

\\

i T = 358.70F + 730F.= 4320F_

3.2.2.3 coil Resistance at 42v

~

The 0.25 ampere coil current measured for this condition (Ref. Section 4.0 Test Results (2),

current for V526-6042-1A) is in error.

The current should be approximately 0.27 a= peres - which is f

approximately equal to the current for V526-5683-6 at 42V (0.275 A).

The coil temperature is calculated by the solenoid shell temperature to calculated coil temperature ratio.

The ratios used in the calculation are based upon the ratios from the test results'on V526-5683-6, at l

120V and 42V applied power.

The results of the tests on this valve are in an expected range,;and MR 526-5683-6-2

,e Sheet 12 l

14273 PE 5733 REV 01

~ PAGE GIS OFG87

. _. ~

s' I

umauf aces 2 ED USE. haamuF aCTURE Om mEPmCQuCTaCM eN wmOLE On in # ART IS promega 7ED.

AND OTMER Os5CLOsumEs AmE peoPERTY OF vaLCOR ENCamEEmsMC CORACA ATeces.

02awsNG, CE SICM the results are more direct since this valve has no rectifitr losses to consider.

To verify the validity of the ratios, consider the ratios of both valves V526-5683-6 and V26-6042-1A at 120V.

The calculated coil temperatures of both coils are 4980F and 4320F respectively as calculated in paragraphs 3 2.1.2.1 and 3 2.2.2.

/

The average solenoid shell temperatures are 4590F and 3960F as given in Section 4.0, Test Results (3),.Tca's T7 and T13 The ratios are computed below:

l Valve P/N Te=o. Ratio V526-5683-6 498cF/4590F = 1.084 V526-6042-1A 4320F/3960F = 1.090 The difference in these ratios is less thar. one percent, which verifies the validity of using the I

ratio for the following calculations.

m

~

MR 526-5683-6-2 Sheet 13

~

M273 PE 5733 REV 01 PAGE C31 0FGJN

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eNCLE C4 Ise P AA F 8 5 PRO =#Ca 7 ED.

UMauTNomaZEQ USE. ndaNuF ACTyst Om REPROQuCTION sN NEERING CORpon & TION.

DR AtytNC CESIGN AND OTNER 315CLO5umES ARE PROPERTY OF vaLCOn ENC similar temperature ratios for 42V Considering 1

input pewer produces the following results:

Temperature Ratio

~

Valve P/N_

V526-5683-6 401oF/3990F = 1.005 414cF/3990F = 1.037 V526-6042-1A 0.25 A=p.

The ratio for V526-6042-1A should be the same as for the V526-5683-2 valve (1.005), based the ratio upon the ratio calculation performed above.

The calculated coil temperature for V526-6042-1A should be: 1.005 times the solenoid shell temperature

?43or (Re f. Section 4.0 Test Results (2), TC0 T13) or 344.70F..(Rounded off to 3450F.)

To deter. ine w h a t" current draw this coil temperature would produce requires calculating as follows:

(a)

Calculate the esti resistance at 3450F using equation (2).

(3450F - 730F)]

T = 89 ohms (1 + (.00393)(5/9) x R

RT = 89 C1 + (.00218) x 2720F]

RT = 89 C 1 + 0. 593 3 = 141. 7 ohms

.. r -..-

'ii MR 526-5683-6-2 Sheet 14 ;

14273 PE 5733 REV 01 PAGE C}1e dpcyb7 l

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j cma stNC, CC SICN l

The total resistance of the V526-6042-1A solenoid assembly is:

(5)

RTOT = RT+RRECT khere:

RTOT

=. Total resi, stance (ohms)

= Coil resistance at temperature (ohms)

RT RRECT

= Rectifier equivalenu resistance Subtituting 141.7 ohms for Rr, and 12.8 ohms (from 3.2.2.1) for RRECT and solving for RTOT*

i I

R;0T

= 141.7 ohms + 12.8 ohms = 154.5 ohms The current draw for this total resistance is calculated by equation '(4).

Re-arranging terms:

o I

I = V/RTOT Substituting 42V for V, and 155 ohms (154.5 ohms rounded off) and solving for I:

i I = 42/155 =.0.271 amperes

'. The above calculated 0.271 ampere draw is within

- 1.5 5.of the 0.275 ampere draw of, V526-5683-6 at 42V, as given in Section 4.0 Test Results (2)..

ib MR 526-5683-6-2 Sheet 15 14273 PE 5733 REV 01 PAGE c3il 0FC7p-

h unauTHORsIED W$E. ad ANUFaCTURE OR REPROOuCTION IN WMOLE OR in paRT IS PROMiss T ED

'RAwt=C. Oc t:Cm AND OTHER Ot 5CLOSUR ES a RE pmOpCRfy OF vaLCO R ENCIN E E RING CORPOR ATICm.

Because the ratios and current draws are equal with the calculated 3450F coil te=perature, the 1.25 ampere reading is in error, as would be a calculated coil temperature based on this current.

Therefore the calculated coil temperature for V526-6042-1A, at a 42V input power is 3450F.

a l

~

i i

MR 526-5683-6-2 Sheet 16 14273 PE 5733 REV 01 PAGE C32t OFC787

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3.0 Test Procedures and Results Tests were performed in accordance with the procedures stated in Combusion Engineering Corporation Report TR-ESE-464, dated April 15,

~

1982.

Temperature rise tests were performed with 6500F water flowing through each valve at a 1 GPM rate.

These tests were performed with each solenoid energized at 42 and 120 volts.

A total 10,250 life cy:le tests were performed at the above given conditions, except that the test v'oltage was li=ited to 123 volts only.

The cycle at five (5) seconds per cycle.

r.pte was set

'I Counters were wired into the position indicating switch circuits to monitor switch operations during cyclic testing.

Following the thermal tests, the coil resistance of V526-5683-6 was =easured by an chameter at room ambient temperature, and V526-6042-1A t o;t a l resistance was calculated by measuring 't'he 14273 PE 5733 REV 01

$,526g683-6-2 t

PAGE 40 0FC757

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resulting. current at 42 and 120 VAC, app 1ied voltages, at room ambient temperature.

Test Results (1)

Both valves, and their position indicating switches completed 10,250 cycles or operation without malfunction.

The thermocouple numbers (TC#) in the following data were located at the following positions:

i TC#

Position on Valve I

4& 10 Connector 0-Ring 5& 11 Accessory Ambient 5& 12 Flange 0-Ring-7& 13 Solenoid Shell 8& 14 Solenoid-Bonnet 0-Ring o& 15 Body Surface l

l MR 526-5683-6-2 14273 PE 5733 REV 01 Sheet is PAGE 09t0FC737

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)

42 Volt Profile Test Results Test Time:

4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months 2585 to 2660 psig valve-inlet Pressure:

Flowrate per valve:

0.97 gpm Inlet Water Temp:

6510F average (553-high, 639-low) 6480F average (650-high, 646-low)

Outlet Water Temp:

Air Environment Temp:

1260F average (128-high, 123-low)

Profile Temperatures 0F' V526-5683-6 V526-6042-1A TC#

Average (High/ Low)

TC#

Average (High/ Low)

T4 255 (258/254)

T10 243

/ (246/236)

/

((288/280)

T5 289 (291/283)

Til 285 324/314)

T6 345 (347/340)

T12-319 T7 399 (401/392)

T13 343 (345/340)

TS 560 (562/553)

T14 444 (447/438)

T9 588 (592/580)

T15 562 (566/557)

Current:

0.275 ADC 0.25 AAC

\\

3) 120 Volt Profile Test Results I

Test Time:

5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months 2620 to 2680 psig i valve inlet Pressure:

Flowrate per valve:

0.97 gpm Inlet Water Temp:

651oF average (652-high, 650-low)

Outlet Water Temp:

6480F average (649-high, 647-low)

Air Environment Temp:

1250F average (128-high, 123-low)

.?rofile Temperatures 0F V526-5683-6 V526-6042-1A.

TCf Average (High/ Low)

TC#

Average (High/ Low)

T4 282 (284/275)

T10 268 (274/264)

T5 323 (325/320)

Til 327 (329/325)

T6 395 (398/390)

T12 368 (371/.365)

T7 459 (466/455)

T13 396 (399/394)

T8.

578 (582/574)

T14 485 (487/482) 79 -

592 (594/590)

T15 566 (567/565)

Cuerent:

0.70 ADC 0.70 AAC

!!OTE:

The first 1 1/2 hours of the 5 hour5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months test period are not included in these results since temperature readings were not fully stabilized.

s MR 526-5683-6-2

~

14273 PE 5/33 REV 01 PAGE Gd 0F C7U

Y 9

Um AUThCal2CD USE. haaNWF ACTURE Q A REPnOQuCTION IM eMOLE Cm am PART IS P ACH8 SITED.

RS ATINC. CE$tCN AND OTMER CesCLC$umES ARE PROPERTY OF V ALCC A ENGINEERING CORDOR ATICee.

~4)

Cyclic Profile Test Results F.

file Temperatures CF V526-5683-6 Zero 950 2017 10,250 TCO Cycles Cycles Cycles Cycles 4

284 281 278 275 5

324 320 317 316 6

397 389 387 388 7

461 445 442 439 8

582 577 577 576 9

594 590 592 586 Notes:

(1)

(2)

(3)

V526-6042-1A 10 271 266 265 261 11 329 322 320 317 12 371 362 360 356 13 397 385 384 379 14 436 485 482 479 15 566 570 570 565-Notes:

(1)

(2)

(3) i Notes:

(1) 950 cycles is 1.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months after s t r,r t of cycling (2) 2017 cycles is 3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months after start of cycling (3) 10,250 cycles is 14.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months af ter start of cycling

~

(5)

. Coil Resistance The measured solenoid coil resistance of V526-5683-6 was ohms 89 at 730F.

The measured currents at the listed applied voltages on V526-6042-1A were:

(1) 0.409A RMS @ 42 VAC

~~

(2) 1.188 A RMS @ 120 VAC l

J MR 526-568316-2 14273 PE 5733 REV 01 Sheet 20 PAGE c3% OFc7C

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Appendix I Combustion Engineering Corporation Test Report TR-ESE d64 On V52600-5683-6 and V526-6042-1A Temperature Profile and Cyclic Tests 4

m l '.,

MR 526-5683-6-2 Sheet 24 14273 PE 5733 REV 01 PAGE G30 0F C787

ML20081K582

Contents

Text

Subject:

Reference:

Dear Sir:

Subject:

Attachment:

Dear Mr. Bingham:

Reference:

Subject:

References:

Subject:

References:

Enclosures:

Dear Mr. Bingham:

2.0 CONCLUSION

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ML20081K582

Text

Subject:

Reference:

Dear Sir:

Subject:

Attachment:

Dear Mr. Bingham:

Reference:

Subject:

References:

Subject:

References:

Enclosures:

Dear Mr. Bingham:

2.0 CONCLUSION

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