ML20077N064

Addendum 1 to Static Load Test & Sesmic Qualification of Clow Wafer Stop Valve Assemblies

ML20077N064
Person / Time
Site:	Limerick
Issue date:	08/16/1983
From:	Allen N PATEL ENGINEERS
To:
Shared Package
ML20077N044	List: ML20077N029 ML20077N051 ML20077N056 ML20077N064 ML20077N071 ML20077N081 ML20077N090 ML20077N096
References
PEI-TR-83-29, PEI-TR-83-29-ADD-01, PEI-TR-83-29-ADD-1, NUDOCS 8309120501
Download: ML20077N064 (50)

Text

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CLOW CORPORATION ADDENDUM I i

TO PATEL TECHNICAL REPORT PEI-TR-83-29

COVERING STATIC LOAD TEST AND SEISMIC QUALIFICATION l OF CLOW WAFER STOP VALVE ASSEMBLIES 24" HBB-BF-M0-57-115, -135, -147 18" HBB-BF-MO-57-112 INCLUDING CLARIFYING OR CONCLUSIVE COMMENTS TO THE MAIN SEISMIC QUALIFICATION REPORT PEI-TR-83-29 '

BY

< William J. Allen, Design Engineer-Nuclear

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Prepared for Bechtel Power Corporation for Philadelphia Electric Limerick Plant In Accordance with Bechtel Specification 8031-P-144, Revision 1 3 Work Performed Under Clow Purchase Order No. 30-11654 Bechtel Purcnase Order No. 8031-P-144-AC Wyle Laboratories Job Number 46823 for CLOW CORPORATION ENGINEERED PRODUCTS DIVISION WESTMONT, ILLIN0IS p%/ Ohho!o000b2 PDR AUGUST 16, 1983 yw wvw _ --

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Page i Clow Corp. Addendum I to Patel

, i REPORT NO.: Technical Report PEI'-TR-83-29 PREPARED BY: d)M William J. Allen',

B- m- 9 3 Design Engineer-Nuclear APPROVED BY:

J11mes Krueger, b >% '

&- /(- 83 Manager-Nuclear Engineering Q.A. REVIEW: hM.L J, Seshagi

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Manager, Quality Assurance l

ORIGINAL ISSUE: August tr o ,\S %

REV. REY. REV. CHECKED Q.A. DESCRIPTION OF CHANGES NO. DATE BY BY BY AND PAGES REVISED i

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Page 11 CERTIFICATION OF CONFORMANCE The subject valve assembly, manufactured by Clow Corporation and described in this report, has been subjected to static testing by Wyle laboratories to evaluate' compliance with the governing specifications. Testing was performed in accordance with Wyle Test Procedure No. 541/0465/WB, Rev. A.

i.

By my review of Bechtel Power Corporetion Design Spacification No. 8031-P-144 Revision 1, " Design Specification for Flanged Butterfly Valves for Nuclear Service for the Limerick Generating Station Un'.'ts 1 and 2"r I certify, to the best of my knowledae, that this Addendum satisfies the requirements of this Specification not~ covered by Patel Engineers Report' No. PEI-TR-83-29, Rev. A.

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w if y Theodore E. Thygesen' // ~ #

Registered Professional Engineer of ,47/s.3

, Illinois

. . Registration No. 62-34780 '

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Page iti ABSTRACT t

, A static load test for seismic qualification was performed on the subject valve assembly manufactured by Clow Corporation. The test was performed in accordance with Wyle Laboratories' Procedure 541/

0465/WB, Revision A. Structural integrity of the assembly and operability of the functional components were verified during and after the static load test. The test was supervised by Patel.

Engineers. Huntsville, Alabama. The test confirms the integrity of the structure and compliance with applicable codes and specifications.

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i 'O l  ; TABLE OF CONTENTS i ; .

i PAGE j~ 1.0 INTRODUCTORY

SUMMARY

1 1.

l r 2.0

SUMMARY

OF RESULTS 1 l.

3.0 APPLICABLE SPECIFICATIONS 2

4.0 DESCRIPTION

OF EQUIPMENT 2 5.0 STATIC LOAD TESTING OF EQUIPMENT 2 l

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6.0 CONCLUSION

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l 1

APPENDIX A WYLE TEST REPORT 46823-1

, APPENDIX B BECHTEL QUESTIONS (TELEX #160777 DATED 7-29-83)

WITH CLOW REPLY.

APPENDIX C PATEL ENGINEERS, INC.

REPLY TO BECHTEL QUESTIONS, l

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Page 1 t

y fr] 1.0 INTRODUCTORY

SUMMARY

V This addendum presents the final results of the s.eismic

qualification of Clow's Wafer Stop Valves for use in Philadelphia Electric Company's Limerick Nuclear Station.

Complete details of the entire qualification program are i stated in the following reports:

r (1) Seismic Analysis Phase: (2) Test Phase:

! Patel Engineers Reports Patel Engineers Report PEI-TR-83-13 PEI-TR-83-29, Rev. A; PEI-TR-83-14 which includes as Appendix PEI-TR-83-15 A, National Technical Ser-PEI-TR-83-16 vices Report No.

528-0951, Rev. C.

Exceptionally tight scheduling requirements did not permit initiation and completion of the static load test of Clow's 24-inch motor operated wafer stop valve at National Technical Services Facilities in Saugus, California.

Table C-1 of Appendix 17 (Rev.1) to Bechtel Design Specifi-cation 8031-P-144 (Rev.1) permits qualification of an 18-inch motor operated wafer stop valve to be extended to 7s the 24-inch motor operated stop valve. Under Patel Engineers supervision, an 18-inch motor operated wafer stop valve was

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tested at Wyle Laboratories facilities in Huntsville, Alabama.

The test procedure and results of the Static Load Test per-formed by Wyle Laboratories are included in this Addc.1dum as Appendix A.

With regard to Patel Engineers' Report PEI-TR-83-29 Bechtel Power Corporation required a response to their list of comments and questions submitted by Telex (#160777 Dtd.

7-29-83). Bechtel's questions and Clow Corporation reply appear as Appendix B. Patel Engineers' reply to their portion of the Bechtel questions, appear as Appendix C.

2. 0

SUMMARY

OF RESULTS Testing Inspection of the valve assembly showed no visible damage.

Operability of the functional components was verified during and after testing. Full documentation of the tests can be found in Wyle Test Report 46823-1 (Attached as Appendix A).

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Page 2 3.0 APPLICABLE SPECIFICATIONS The following documents were used in the performance of the seismic qualification program:

Bechtel Power Corporation Design Specification No. 8031-P-1M, Revision 1, " Design Specification for Flanged Butterfly Valves for Nuclear Service for the Limerick Generating Station Units 1 and 2" .

Bechtel Power Corporation Specification No. 8031-P-358,

" Specification for Dynamic Qualification of Safety Related Actuators for the Limerick Generating Station Units 1 and 2"

4.0 DESCRIPTION

OF EQUIPMENT 18-inch motor operated wafer stop valve, Clow Serial No. 82-2053-04(N)-01, Philadelphia Electric Co., Serial No.18" HBB-BF-M0 112, with a Limitorque SMB-1-60-H5BC operator.

5.0 STATIC LOAD TESTING 0F EQUIPMENT The valve described in Section 3.0 was subjected to static loads q to demonstrate the capability of withstanding the simultaneous application of worst case forces anticipated in the course of V -

service life.

The loads applied to the equipment to satisfy the static load qualification requirements were the following:

1. All normal loads, including weight of valve top works and differential pressure across the disc of 55 psid.

2. Horizontal and vertical inertial loads, equivalent to 4.5g seismic acceleration in each axis.

The equipment was rigidly attached to a Wyle-fabricated test fixture, described in Appendix A, for application of the specified loads.

All ancillary electromechanical devices necessary for equipment '

function were energized and monitored for change of state during the application of the inertial loads.

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Page 3 ,

6.0 CONCLUSION

S I The valve as described in Section 4.0 and which was tested L' per Appendix A " demonstrated sufficient integrity to with-stand, without comprise of structure, electrical function,

'~ or mechanical function, the prescribed load testing."

i As a result of the successful qualification testing of the 18-inch valve, qualification is extended to the 24-inch j valves, Philadelphia Electric Company, Serial No.'s 24" HBB-BF-M0-57-115, -135, and -147 by authority of Table C-1 of Appendix 17 (Rev.1) to Bechtel Design Specification 8031-P-144 (Rev. 1).

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'O APPENDIX A WYLE TEST REPORT 46823-1 O -

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W' STATIC LOAD TEST PROGRAM ON AN 18-INCH BUTTERFLY VALVE ASSEMBLY WITH LIMITORQUE OPERATOR (CLOW JOB NO. 82-2053-04(N)-01)

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FOR CLOW CORPORATION ENGINEERED PRODUCTS DIVISION O WESTMONT, ILLINOIS 60559 40 CHESTNUT AVENUE hm* i _ _ _ _ . _ _ . _ - - _ _ _ _ _ . _ _

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. .: SEISMIC SIMULATION .

Test Report

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June 27, 1983 r m .A w q , VV. .l DATE

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SPECIFICATION (S)

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in Section 7.0 clow comoradon, Engineend Moducts Msion 1.0 CUSTOMER 40 Chestnut Avenue, Westmont, Illinois 60559 ADDRESS 18-in h Lugged Wafer Stop Valve with an SMB-1-HSBC Limitorque 2.0 TEST SPECIMEN Actuator 3.0 MANUFACTURER 4.0

SUMMARY

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An 18-inch Lugged Wafer Stop Valve Assembly with a Limitorque Actuator, hereinaf ter called the specimen, was subjected to Static Loads and Pressure Integrity Tests as required by the Clow Corporation, Engineered Products Division, Purchase Order Number 30-11654 and Wyle Laboratories' Seismic Test Procedure 541/0465/WB, dated May 25, 1983, Revision A. The test program was performed on June 14, 1983.

The test program consisted of static load testing and seat leakage testing prior to and after the loa <l t_ests. The specimen was electrically powered and monitored for functional operation during the test program as required.

The specimen demonstrated sufficient integrity to withstand, without compromise of structure, electrical function, or mechanical function, the prescribed load testing.

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Page No. 2

, R'eport No. 46823-1 0

4.0

SUMMARY

(Continued)

Table I contains descriptions of the test runs.

Figure 1 shows a representative section of the oscillograph records of the electrical monitoring channels.

Photograph 1 shows the load test setup, i

l Appendix I contains. the Instrumentation Equiptrent Sheets.

Appendix II contains the Wyle Laboratories' Seismic Test Procedure 541/0465/WB, dated May 25, 1983, Revision A.

Appendix III contains the Wyle Laboratories' Certification of Compliance No. HSV/106, dated June 27, 1983.

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O WYLE LABORATORIES Hur itsville Facility

Page No. 3 Report No. 46823-1 l

l r-t 5.0 STATIC LOAD TEST REQUIREMENTS i

5.1 Specimen Mounting The specimen shall be installed in a Wyle-fabricated test fixture as i shown in Figure 1.of the Test Procedure (Appendix II). The test fixture shall be welded to a rigid reaction frame.

1 5.2 Static Load Excitation An equivalent static load of 4.5 g* shall be applied in line with the center of gravity of the actuator in each of the three (3) orthogonal specimen axes. The center of gravity of the actuator and a smooth, flat surface for the application of the static load shall be provided by Clow Corporation. The seat leakage differential pressure fer the valve shall be simultaneously applied to the test fixture while the static load is applied. The specimen shall then be cycled while in the deflected mode as described in Paragraph 5.5.

The magnitude of the. load shall be determined by multiplying the hydraulic pressure by the effective piston area of the hydraulic cylinders. The loads shall be applied simultaneously with one, two or three hydraulic cylinders. It is assumed that the static load can be applied in either the positive or negative direction.

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• Assuming an actuator weight of 1220' pounds, the applied (or equivalent) static load shall be 5490 pounde in each orthogonal direction.

5.3 Pre-test and Post-test Functional Operability Prior to and following the application of the static loads, the specimen shall be stroked through four (4) complete operating cycles (two cycles with 368 VAC power and two cycles with 460 VAC power).

5.4 Seat Leakage Tests Seat leakage tests shall be performed prior to and after the static load tests in accordance with the Clow Corporation " Seat Bubble Test Procedure EPS 30-49-832." The leakage test duration shall be four (4) minutes.

WYLE LABORATORIES Huntsville Facility

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Page No. 4 Report Mo. 46823-1 5.0 STATIC LOAD TEST REQUIREMENTS (Continued)

I 5.5 Operability Tests With the static loads applied, the specimen shall be stroked through three (3) complete operating cycles: Open-to-closed with internal pressure; closed-to-open with differential seat leakage pressure.

The operating time in each direction of travel shall be recorded during each operating cycle.

5.6 Electrical Power A variable source of electrical power (368 to 460 VAC, 3 phase, 60 Hz) shall be furnished for the operation of the specimen.

5.7 Electrical Monitoring -

Five (5) electrical monitoring channels shall be recorded on oscillograph recorders to monitor the following:

1) A limit switch (which changes state in the opening direction).

2) A limit switch (which changes state in the closing direction).

3) Torque switch (which shuts off power at the end of the closing O-.

stroke).

4) Operating current.

5) Valve disc motion (rotary potentiometer attached to rotating disc on the actuator).

5.8 Pneumatics Pneumatic pressure of 55 psig shall be provided to perform the leakage tests described in Paragraph 5.4 and the operability tests described in Paragraph 5.5.

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\MYLE LABORATORIES Huntsville Facihty

Page No. 5 Report No. 46823-1 i~

O 6.0 STATIC LOA'D TEST PROCEDURES AND RESULTS 6.1 SPECIMEN MOUNTING PROCEDURES The specimen was installed in a Wyle-fabricated test fixture as shown in

+ Figure 1 of Appendix II. The test fixture was welded to a rigid reaction frame as shown in Photograph 1.

i. 6.2 Static Load Excitation Procedures An equivalent static load of 4.5 g (5490 pounds-force) was applied in line with the center of gravi:.y of the actuator in each of the three (3) orthogonal specimen axes. The seat leakage differential pressure for the valve was simultaneously applied to the test fixture while the static load was applied. The specimen was then cycled while in the deflected mode as described in Paragraph 6.5.

The magnitude of the force in the horizontal plane (X/Z axes as shown in Photograph 1) was 7764 lbf. The application of this force at a 45-degree angle (to e'ither axis) resulted in an equivalent static load of 5490 lbf in both the X and Z axes. The magnitude of the force in the vertical axis (Y axis as shown in Figure 1) was 5490 lbf. The magnitudes of the two (2) loads were determined by multiplying the hydraulic pressures (620 psig to the horizontal, 440 psig to the vertical) by the ef fective piston areas of the 4-inch diameter hydraulic cylinders (12.6 square inches).

The loads were applied in the directions shown in Photograph 1.

6.2.1 Static Load Excitation Results .

It was demonstrated that the specimen possessed sufficient structural integrity to withstand the prescribed loads. Operational test results are presented in Table I.

6.3 Pre-test and Post-test Functional Operability Procedures Prior to and following the application of the static loads, the specimen was stroked through four (4) complete operating cycles.

Two (2) operating cycles were performed at 460 VAC and two (2) were performed at 368 VAC.

6.3.1 Pre-test and Post-test Functional Operability Results Stroking times recorded during cycling tests are presented in Table I.

O WYLE LABORATORIES Huntsville Facility

Page No. 5 Report No. 46823-1 w

6.0 STATIC LOAD TEST PROCEDURES AND RESULTS (Continued) 6.4 Seat Leakage Test Procedures Seat leakage tests were performed prior to and after the static load tests in accordance with the Clow Corporation's " Seat Bubble Test Proce-dure EPS 30-49-832." The leakage test duration was four (4) minutes.

6.4.1 Seat Leakage Test Results No leakage was detected during the seat leakage tests performed prior to and after the static load tests.

6.5 Operability Test Procedures Witi. the static loads applied and an operating voltage of 368 VAC, the specimen was stroked through three (3) complete 6perating cycles: Open-to-closed with an internal pressure of 55 psig; closed-to-open with a differential seat leakage pressure of 55 psig.

The operating time in each direction of travel was recorded during each operating cycle.

6.5.1 Operability Test Results Stroking times recorded during operability tests are presented in Table ,

I. l l

A representative section of the oscillograph records of the electrical i monitoring channels is shown in Figure 1.

6.6 Electrical Powering Procedures A variable source of electrical power (368 to 460 VAC, 3 phase, 60 Hz) was furnished for the operation of the specimen during the test program.

The electrical power was connected to the specimen such that a pushbutton l motor starter (furnished by Wyle) would initiate valve travel in either I the c.losed-to-open or open-to-closed directions. During the closed-to- i open stroke, the electrical power was shut off by a preset limit switch. '

During the open-to-closed stroke, the electrical power was shut off by a preset torque switch.

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WYLE LABORATORIES Huntsville Facehty

Page No. 7 Report No. 46823-1 i'

'O 6.0 STATIC LOAD TEST PROCEDURES AND RESULTS (Continued) p 6.7 Electrical Monitoring Procedures Five (5) electrical monitoring channels were recorded on oscillograph

' recorders to monitor the following:

1) A limit switch (which changed state in the opening direction).

I

2) A limit switch (which changed state in the closing direction).

3) Torque switch (which shut off power at the end of the closing stroke).

4) Operating current.

5) valve disc motion (rotary potentiometer attached to rotating disc on the actuator). .

o.7.1 Electrical" Monitoring Results The specimen stroking times are presented in Table 1.

A representative section of the oscillograph records of the electrical monitoring channels is shown in Figure 1.

O

• Pneumatics 6.8 Pneumatic pressure of 55 psig was provided to perform the leakage tests described in Paragrsph 6.4 and the .perability tests described in Para- ~

graph 6.5.

O WYLE LABORATORIES Huntsville Facihty

Page No. 8 ,

Report No. 46823-1

7.0 REFERENCES

7.1 Clow Corporation, Engineered Products Division, Purchase Order Number 30-11654 7.2 Wyle Laboratories' Seismic Test Procedure 541/0465/WB, dated May 25, 1983, Revision A 7.3 IEEE Standard 344-1975 Specification entitled " Recommended Practices for Seismic Qualification of Class 1E Equipment for Nuclear Power , Generating Stations" 7.4 Wyle Laboratories' (Eastern Operations) " Quality Assurance Program" manual, dated February 1983 7.5 Clow Corporation's " Seat Bubble Test Procedure EPS 30-49-832," dated February 9, 1983 -

7.6 Bechtel Corporation Specifications: 8031-P-144, Revision 1, dated July ,

22, 1982, and 8031-G-11, Revision 15, dated May 7, 1979 '

7.7 Clow Corporation Drawing Number D-0702 7.8 Limitorque Corporation Drawing Number 02-442-0497-2 ,

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Page No. 17 r.

Report No. 46823-1 l

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l APPENDIX II

(

STATIC LOAD TEST PROCEDURE

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d O WYLE LABORATORIES Huntsville Facshty

Page No. 18 TEST PROCEDURE TEST PROCEDURE NO.

SCENTIFC SERvCES & Sv8TEMS GROUP P O so icoe . wei. "* **** MF LacomAfoAES TWIloim F26222S

• TELEPHONE (M 837 4411 DATE: 'May 25, 1983 Revision A J/N 46823 STATIC LOAD TEST PROCEDURE FOR AN 18-INCH VALVE ASSEMBLY FOR -

CLOW CORPORATION WESTMONT, ILLINOIS F

APPROVED BY:

R JE M NAGER:. M #2#/ 24[#7 APPROVED BY FOR:

QUAUTY ENGINEER - '

A $ b APPROVED BY:-

PREPARED BY FOR:

PROJECT ENGINEER:

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M*  % A 3

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flEVISIONS

, REV. NO. DATE FORM tout Rev. 4/74 PAGES AFFECTED l Sv a PP'L. , si OESCRIPTION OF CHANGES A G-13-83 All hLQg [(th Revised entire Procedure per request

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of Clow Technical Representative.

i COPYRIGHT Sv wvLt LA80RATORIES.

O WITHOUT TwE EXPRESS PRIOR PERMISSION OF wvLE LABORATORIES 15 PROHlBITEDTHE RIGHT TO REPRODUCE. COPV THE MATERIAL CONTAINED MEREIN SHALL BE EQUlvALENT TO E.XPRESS PRIOR PERMISSIONTHE ACCEPTAhCE

Page Mo.19 i

Raport No. 46823-1 j PAGE NO 2

[~ TEST PROCEDURE NO. 541/0465/WB t

Revision A 4

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1.0 PURPOSE -

I The purpose of this test program is to seismically qualify an 18-p inch Lugged Wafer Stop Valve Assembly (with a Limitorque

, Actuator) by statically loading the actuator and yoke of the valve with an equivalent static load of 4.5 g applied at the center of gravity of the actuator in each of the three (3) orthogonal specimen axes. The specimen temperature and humidity 1.

shall be ambient during the test program.

2.0 SPECIMEN DESCRIPTION AND MOUNTING i

An 18-inch valve assembly (butterfly valve with an SMB-1-H5BC Limitorque actuator) as described on Clow Corporation Drawing Number D-0702, hereinaf ter referred to as the specimen, shall be attached to a Wyle-furnished test fixture as shown in Figure 1.

The test fixture shall be welded to a rigid reaction frame.

3.0 STATIC LOAD An equivalent static load of 4.5 g* shall be applied in line with the center of gravity of the actuator in each of the three (3)

O .

orthogonal specimen aus. The center of gravity of the actuator and a smooth, flat surface for the application of the static load shall be provided by Clow Corporation. The seat leakage differential pressure for the valve shall be simultaneously applied to the test fixture while the static load is applied. '

The specimen shall then be cycled while in the deflected mode as described in Paragraph 4.0.

The magnitude of the load shall be determined by multiplying the hydraulic pressure bythe effective piston area of the hydraulic cylinders. The loads shall be applied simultaneously with one, two or three hydraulic cylinders. It is assumed that the static load can be applied in either the positive or negative direction.

• Assuming an actuator weight of 1220 pounds, the applied (or equivalent) static load shall be 5490 pounds in each orthogonal direction.

s WYLE LABORATORIES F0aM10542 "" Oc'18 HuritsviHe Facihty

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Page No. 20 Report No. 46823-1 PAGE NO- 3

' TEST PROCEDURE NO. 541/0465/WB Revision A -

4.0 OPERABILITY TESTS With the static loads applied, the specimen shall be stroked through three complete operating cycles: Open-to-closed with internal pressure; closed-to-open with differential seat leakage pressure.

The operating time in each direction of travel shall be recorded during each operating cycle.

5.0 SEAT LEAKAGE TESTS Seat leakage tests shall be performed prior to and af ter the atatic load tests in accordance with Clow Corporation's

" Pneumatic Seat Bubble Test" EPS 30-49-832. The leakage test duration shall be four (4) minutes. -

6.0 PRE-TEST AND POST-TEST FUNCTIONAL OPERABILITY Prior to and following the application of the static load, the specimen chall be stroked through four complete operating cycles.

7.0 ELECTRICAL POWER Standard electrical power of 368 VAC, 3 phase, 60 Hz, shall be furnished for the operation of the specimen. The voltage shall be variable to 460 VAC for the pre-test and post-test baseline operability tests.

8.0 ELECTRICAL MONITORING Five (5) electrical monitoring channels shall be provided to monitor the following:

1) A limit switch (which changes state in the opening direction).

2) A limit switch (which changes state in the. closing direction).

3) Torque switch (which shuts off power at the end of the valve .

stroke).

4) Operating current.

9 l

WYLE LABORATORIES ' 0" * * ? '" OC' "

HuntSvsfle Facihty

Page No. 21 Report tb. 46023-1 FAGE NO 4 TEST PPOCEDURE NC. 541/0465/UB I- Revision A

.I ?

8.0 ELECTRICAL MONITORING (Continued)

5) Valve disc motion (by attaching a rotary potentiometer to the rotating disc on the actuator).

The electrieni monitoring chaanels . ahall . be recorded on an oscillograph recorder.

i r _

9.0 PNEUMATIC PRESSURE Pneumatic pressure of 55-psig shall be provided to perform the leakage tests described in Paragraph 5.0 and the cycling tests described in Paragraph 4.0.

~

10.0 I_N-PROCESS INSPECTION Thc. records. shall be checken for quality of performance af ter ecch test. -s the specimen shall be estmined for possible damage followinC-each test. * , J-Allimportantloding[tffectsshallbelog'ged.

Photographs shall-be taken. of any noticeable physical damage -

that may occur.

s 11.0 REPORT ,_

s Five (5) copies of a certification-type rest report for the valve shall be issued ,for approval subsequent to' completion of testing. This repoEt shall be- signed by a Registered Professional Engineeir und : hall summarize the test results and .

conclusions, detailu' And recommendations concerning

!!cficiencies and repAiih.'and photographs of test setups, Iailures, test procedures, etc. The report shall also contain a list of test equipment used, cal ibr ations , and Instrument-Nion Log Sheets.

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Report No. 46823-1

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APPENDIX III WYLE LABORATORIES' CERTIFICATION OF COMPLIANCE O

, WYLE LABORATORIES Huntsville Facility

_ . __ _ _ _ _ _ _ _ f

Pcge Mo. 25 Report No. 46823-1

[\

U WYLE La.onmoan SoE NMiC SERvtCES & 5v5fEMS GROUP CERTIFICATE OF COMPLIANCE NO.: Hsv/106 DATE: June 27, 1983 WYLE JOB NO.: 46823 '

clow corporation 40 Chestnut Avenue -

Westmont, Illinois 60559 Gentlemen:

Wyle Laboratories certifies that an 18" Lugged Wsfer Stop Valve with an SMB-1-HSBC Limitorque Actuator has been tested in compliance with Wyle Laboratories' Test Procedure 541/0465/WB, dated May 25, 1983, Revision A, and Clow Corporation's Purchase Order Number 30-11654 (Clow Job No.

82-2053-04(N)-01 for the Limerick Generating Station, Units 1 ano 2).

Additionally, these -tests were performed in compliance with the guidelines of the following specifications:

o Bechtel Corporation Specification 8031-P-144, Revision 1, dated July 22, 1982 Bechtel Corporation Specification 8031-G-11, Revision 15, o

dated May 7, 1979 o Clow Corporation Drawing No. D-0/02 o Limitorque Drawing No. 02-442-0497-2 The results of the testing conducted under the listed specifications have been completely and correctly conducted with accurate results, as documented in Wyle Laboratories' Test Report No. 46823-1 dated June 27, 1983.

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O T O I N . - . S James H. Powe11, Supervisor . being

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et knowieoge ena correct in ENGINEER .J,II

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(TELEX #160777 DATED 7-29-83)

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Page 1 of 4 pages.

, Clow Corporation 40 Chestnut Avenue 312 789 8900

, Engineered Products Dmsson Westmont. IL 60559 l 6

I r August 3, 1983 BECHTEL POWER CORPORATION P.O. Box 3965 San Francisco, CA 94119 Attention: Mark Schletz

SUBJECT:

Response to Bechtel Telex 160777 of 7/29/83 i covering coments and questions on Report PEI-TR-83-29 l Ref. 8031-P-144-99-1 C1cw Job 82-2053(N).

Gentlemen,

. From the 25 listed items, all but 5 have previously been responded to by our sub-contractor, Patel Engineers, Huntsville, Alabama. Five items require response from Clow. These items are numbered 14,15,16,17 and 23 on the subject telex. The responses which follow will be incorporated as part of the report by a Clow produced Addenda.

.(s) V Responses -- -

Item 14 -- Clow selects appropr'iate size actuators to provide for the required leakage based on calculation and previous experience. Due to variations in manufacture of the valve, actuator output torques are selected with a mar '

gin (50% or more) over what may actually be required to seal the valve. The subject unit did not produce the required torque as guaranteed by Bettis, yet it did provide sufficient torque to seal the valve (see Item 15 response).

Bettis guarantees a torque of 5510 in-lbs. Previous information Bettis (Bettis Sheet ASK 891, not provided to Bechtel) had indicated an expected torque of 5950 in-lb. (495 ft-lb) and was the source of the assumed 495 ft-lb output torque. During testing at NTS, this low torque was questioned and presented to the Clow representative. The Clow representative based on his knowledge of typical torque margins determined the test should continue. A subsequent test at Clow using strain gage measurement showed the torque to actually be on the order of 350 ft-lb. The output torque actually obtained must be sufficient to perform the required sealing function and overcome any aerodynamic torques tending to resist valve closure under emergency condi-tions. Since all aerodynamic torques tend to close the valve (Ref. Clow Purge and Vent Valve Operability Qualification Analysis Report No. 6-06-83) this does not present a minimum torque criteria. Thus, sealing of the valve becomes the primary criteria for minimum torque. Clow tests, as witnessed by the Bechtel inspector, insures sufficient torque was available to meet ,

required leakage values.

v/

a h V CLOW '

Page 2 of 4 pages.

[ August 3, 1983 -

I.

BECHTEL POWER CORPORATION '

r San Francisco, CA 94119 I

Attention: Mark Schletz Item 15 -- When leakage was measured at NTS for valve (AO-57-121 (Clow 82-2053-03(N)-01) leakage was out of spec. Since inadequate facilities were available at NTS to correct the. problem and Bechtel required the testing process to be expedited, Clow decided the test would be valid if it showed that leakage before and after the test did not differ significantly. The test results did validate this. Subsequent to the tests and prior to shipment, Clow made appropriate adjustments to the seal assembly to meet spec leakage requirements. Clow's position is that the required seismic tests will not alter the leakage rate significantly. Thus, if appropriate leakage rates are met prior to a seismic event, the valve will seal as required during and after such an event. Tests on the 6% motor operated valves further validate this, s Item 16 -- The operational times indicated in the report are out of spec.

. and beyond the previously requested deviation amount of 5.3 seconds. For.

the 6" M.0. valve the recorded post operational time is 5.5 seconds.

j Post operational tests at Clow's Westmont plant indicate 5.3 to 5.4 sec.

, for 0-C, 5.2 to 5.3 for C-0 operation at minimum voltage. The Clow I representatire present during tests at NTS advises that pre and post operational tests were timed with a hand-held stop watch by two different '

individuals. The time was based on viewing the-indicator on the cover plate. Time tests at Clow were run with an electric stop watch activated by the start control signal and de-activated by dropout of the motor contactor (as controlled by the actuator torque switch). Clow feels that the .1 or less second difference between Clow measured time and the approved spec deviation time (5.3 sec) can be accepted by Bechtel. As a further basis for acceptance, Clow contends that the valve may in fact be closed

(. seal in complete contact with seat) before the torque switch causes the motor contactor to drop out. This may account for as much as .3 to .5 seconds depending on shaft windup (smaller valves have greater windup). For the air operated valve test the C-0 cycle ran 5.2 seconds. Clow understands tnat this does not meet spec but we believe it is acceptable from the position that at 5.0 seconds, the valve will be open 95% of its full amount and more than approx 98% of the valves flow capacity will be available.

l Further, the valves main safety related function is to close.

l l Item 17 -- The data presented on pg. 25 for performance during static test indicates times well out of spec requirements.

It appears NTS recorded results may not be correct as a correlation between Table I and Appendix B data is not apparent. Clow, through our.sub-contractor, Patel, has requested that NTS review test records covering these times to see what actual results were. The known timing methods for pre and post operation are indicated in our response to Item 16 above.

O CLOW Page a. of 4 pages.

August 3, 1983 r

BECHTEL POWER CORPORATION

San Francisco, CA 94119 Attention

Mark Schletz r.

For the test during static loading (on a centrift.ge), the same timing method was not feasible, thus NTS apparently used motor current draw times as the measured criteria. First, Clow's evaluation of the motor current draw plots would not support a 6.8 sec operational time. Clow's measurement would suggest 6.3 to 6.4 sec for all cycles. Two problems exist with the test and the method of measurement. First, the valve must be closed

'(physical contact between seal and seat) before torque of any significant magnitude is sensed by the torque switch. This can give additional time for motor current draw of .3 to .5 seconds after the valve is physically closed (Section 16). Second, centrifuge static loading produces a uni-directional load not truly representative of a seismic load. A conversa-tion with Limitorque qualification personnel (Joe Orab) suggests that such a unidirectional load may cause higher than normal bearing and motor end loadings, thus reducing the speed. The Wyle report No. 46823-1 shows that a time increase is not due to valve binding since static loading using

[' - . a hydraulic cylinder showed no difference in time between load and no load conditions. From the above it seems reasonable to expect the valve assembly to cycle in a time period close to the pre and post test values, if subjected to a seismic or other dynamic load with some frequency content.

Item 23 -- The following responses give justification or rationale for all N00's.

~

N0D No. 0-1:

Jungtion boxes were mounted by Bettis and the bolt sizing problem was not apparent untit hBox came loose during the test. Clow has inspected and corrected this problem on all units which were not shipped i

before this problem was detected. Clow will make arrangements. to inspect and/or correct this problem on units which were shipped before this problem was known.

N0D No. 0-2: For this notice of deviation no valve actuator problems were present. The failure resulted from thTNTS setup providing an in-adequate air supply to the actuator.-

N00 No. D-3: Same response as to D-2.

N00 No. D-4: Explanation given in response to Item 14 above.

N0D No. 005: Copper line mounting by Bettis was inadequate for the required s seismic test conditions. The test was continued after shortening the line length to increase response frequency. Knowledge gained from the test was used as basis for determining design corrections.

.c -

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< CLOW Page 4 of 4 pages.

j August 3, 1983 BECHTEL POWER CORPORATION ,

, San Fr::ncisco, CA i

Attention: Mark Schletz N0D No. D-5: Justification and/or explanation is covered by response to Tele x Item 23 which was provided by'Patel.

N0D No. D-7: This item was an unexpected occurrence and was an item of knowledge used to modify the actuator-valve system design. Again, units previously shipped will be corrected.

NOD No. 9: See response to Item 16 above.

N0D No. D-10: Gasket was not required for pressure retention or actuator function. Test was continued since gasket was non-essential to operation.

Gasket was replaced later at Clow and should be replaced in field if a similar problem is noted af ter visual examination.

D ,N0D No. D-ll: Test was continued based on belief that tube was damaged in

[%) handling and that tube failure would allow unit to provide its safety related function of closing. Tube should be inspected in field for damage in handling.

N0dNo.D-12: See response to Item 16 above. ,

If you have any furi.her questions, please advise.

Sincerely, j

John Sirovatka,

! Manager-Contract Administ'rator JS:hf G

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'O r- APPENDIX C i PATEL ENGINEERS, INC.

, REPLY TO BECHTEL QUESTIONS L

4 O

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?t I r, patel engineers Pt , DCte; enteronses, inc.

) FmB>Q 3400 ole sonng rc. nw suite o-3 p o cox 3531 huntsvme. c!cocmc 2530 205-850-5000

=(d L July 29,1983

• Bechtel Power Corporation i

P.O. Box 3965 l

San Francisco, CA 94119 '

Attention: Mr. Mark Schletz

Subject:

PEI Response to Bechtel Comments from EQG No. 1275D Re fe rence: Patel Engineers Technical Report PE I-TR-83-29 Gentlemen:

The following is Patel response to the subject Bechtel comments:

4a) #57-147 is tag number for 24-inch motor operated valve and its dynamic qualification is not included in PEI-TR-83-29.

1 p Mention of #57-147 will be deleted from the title page of Q

• PE I-IR-83 -29. .

4b) The 4-inch motor operated and 18-inch ' air- operated va lve assemblies are qualified by similarity, due to the qualification " band" of 8031-P-144. ~

4c) The two valves were tested on different centerfuges. We will re q ue,s t that NTS provide you with the rotational speed of each centerfuge used. We will also req ues t that they provide a sketch of monitoring details.

.f- 4d) Pages 28-30 of Appendix A of the subject report will be revised to include notes discussing location and g.aga number of control accelerometers.

4e) Patel will supply Bech te l with original photographs contained in the subject report. It is hoped that these photographs will clarify the location and mounting of the subject hardware.

)

f

,- . a l

I Bechtc1 Power Corporation

l

) Mr. Mark Schletz July 29, 1983 Page 2 4f) Accelerometer number 4 is located on the spring can support which is part of the test fixture itself. It is felt that i

what appears to be a large Q factor is only the spring rattleing inside the can, producing broad frequency " noise" picked up by accelerometer numbe r 4 We will add a paragraph discus'sion this in the referenced report.

4g) We will request that NTS* provide the SSE data required in either tabular or plot form for each valve tested.

4h) PEI will request NTS to respond to this matter. We will request that attention be given to the overtest levels of the SSE environments.

4i) There were no "re-tests" for OBE levels. The "re -te s t s "

were performed on the 24-inch Bettes unit condition. for the SSE

.i I If you have any question's or comments concerning this response, please fee l free to call.

Sincerely, N. Allen Davidson i

Structural Dynamist ,

Nuclear Power Services l NAD/j b cc: Mr. J. E. Krueger, Clow/Frisch Corporation

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ka 3400 blue sonng rd nw suite b-3 + p. o. tox 3531 huntsville, alabama 35810 t 205-859-5000 l d Qi lVn) 1 r- August 1, 1983 V r

, Bechtel Power Corporation P.O. Box 3965 San Francisco, CA 94119 Attention: Mr. Mark Schletz

Subject:

PEI response to Additional Bechtel Comments from Telex Dated July 28, 1983, four pages.

Reference:

PEI Technical Report PEI-IP.-83-29, Job No. 8220 Gentlemen:

The following is a Patel response to the additional Bechtel comments:

Page 1; Para. 1.2.2:

First sentence will be modified to describe when inspections were made.

Operator parts, that did sustain seismically induced damage, had design modifications made on site. The modified units successfully completed the qualification program with no visible damage.

Page 4; Item 4:

" Water" will be changed to " wafer" ,

Page 6; Para. 4.3.2.1:

" Operating Basis Event" will be changed to read " Operating Basis Earthquake". " Safe Shutdown Event" will be changed to " Safe Shutdown Earthquake". Mark I will read Mark II.

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! Page 8, Item 5,6,7:

"After OBE" will be deleted and clarification will be given to insure these items be treated during normal maintenance or shutdown periods.

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. h l Mr. Mark Schletz August 1, 1983 Page 2 Comments to NTS Test Report (Appendix A of PEI- n 29)

Page 8; Item 5.2:

This paragraph will be expanded to note that the severity of the SSE test was the basis for this mission. (i.e., considerably more cycles at higher G 1evels were input into the unit to account for vibrational aging at lower operating levels.

Page 6; Para. 5.1.2.1A:

The description of the problem with the air supply will be more adequately explained. This will include deletion of the word " Ullage" and addition of discussion centered around the small compressor used during the initial tests. This small unit could not meet the volumetric flow requirements of

• the large Bettes operator. The re-test functionals, using house air, proved this to be the case.

Page 6; Para. 5.1.7.2.A:

I believe " live frequency" is actually referring to the voltage being AC rather than DC. With the mentioning of 60Hz frequency, this is obviously a redundant comment. "I.ive frequency" will be deleted.

Page 10; Para. 5.3.3.3:

Mark I will be replaced by Mark II Page 10; Top of Page:

Orthogonal will be spelled correctly.

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Mr. Mark Schletz August 1, 1983 .

fi Page 3 j Page 10; Para. 5.3.3.2.1:

r We will request NTS to explain why the 3.0g levels were not reached through the entire OBE tests. A discussion of overtest of the SSE levels will be used to help justify the inconsistance of the OBE tests.

Page 13; Item C:

Clow Corporation will address torque justification.

Page 15; Item B:

The test procedure shows no failure criteria for seat leakage. Clow wiil deal with Bechtel on this issue.

Page 14 and 15:

• Clow Corporation will deal with justification for out of specification operating times. After PEI is notified of revised allowable operating times, a note will be added to the report discussion acceptance of these times.

Page 25 ; Para. 5.3.4.2:

Clow Corporation will address operating times of the 6-inch ' motor operated

~

valve asaembly.

General:

1) Original photographs will be sent to Bechtel. We were unable to make any better copies.

2) The function of the NOD is only to report the deviation.

/.ny problem arising from the presentation of the NODS must be addressed by Clow Corporation.

3) Patel will reque s t that NTS provide acceleration versus frequency data for the SSE tests. This may be in either tabular or plot form.

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Mr. Mark Schletz August 1, 1983 Page 4 9 If you have any questions or comments concerning this response please feel

, free to call.

l Sincere ly ,

, N. Allen Davidson Structural Dynamist NAD/jb cc: Mr. J. E. Krueger, j- Clow/Frisch Corporation o

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e t lj V s G r, patel engineers r f '7 POfel enterprises, inC km $0 Dy2)CCCrmg L::- > :U r3 nw' Suite O-3' O O OCx 3531 %nisvilfe, alOOo no 35810 i k August 4, 1983 Bechtel Power Corporation P.O. Box 3965 (-c .tg ggg ; ,

I San Francisco, CA 94119 *

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, Attention: Mr. Mark Schletz

Subject:

NTS Response to Bechtel Comments

Reference:

Patel Engineers Technical Report PEI-TR-83-29 Gentlemen:

NTS has responded to the subject comments in the following manner:

Page 6 Paragraph 5.1.2.1 A:

NIS shall delete the sentence: "The baseline tes t was repeated . . ."

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V NTS shall insert the sentence: " Careful investigation of the . test setup

~

revealed that the air compressor used to operate the 24-inch air operated actuator was unable to supply sufficient volumetric flow to meet the requirements of the 24-inch operator. The test setup was modified to meet the volumetric flow requirements of the 24-inch operator and operability was verified before and af ter the partial dynamics retest, reference page 12."

Page 6, Paragraph 5.1.2.2 A:

NTS shall delete " live frequency."

Page 8 Paragraph 5.2:

NTS shall include the sentence: "The fatigue cycles frcm vibration cycling are insignificant compared to the number of fatigue cycles and high acceleration levels induced during the SSE test exposure."

Page 10, Paragraph 5.3.3.3:

Mark II shall replace " Mark I."

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[ Bechtel Power Corporation l I Mr. Mark Schletz August 4, 1983 Page 2 Page 10, top of page:

The spelling of "orthogonal" shall be corrected.

Page 10, Paragraph 5.3.3.2.1:

After the third sentence, NTS shall insert the sentence: "Due to the inherent characteristics of the test machine , NTS was' unable to meet the OBE test levels at low frequencies. Additional SSE testing was conducted in excess of the OBE test levels , reference Figure 4. -

Pages 28, 29, 30:

NIS shall include a note on each page to clarify control accelerometer location and number.

Page 27, Paragraph 5.3.2.3:

Af ter the fourth sentence, NIS shall insert the following sentence: "A q g high acceleration. amplification signal (27.2 g) was noted at 31 Hz in the X axis for the accelerometer located on the spring can (accelerometer #4).

This amplification was determined to have resulted from rattling and impacting of the spring on the spring can. This amplification does not represent a global resonance of the test specimen." ,

General Comments:

1. General comment .1 may represent a cost impact as well as a scheduling l

prob lem. An acceleration versus frequency matrix may be out-of-scope of the original purchase order. NTS will advise Patel of the add i-l tional cost, if any.

l

2. a) NIS shall include the centrifuge arm radius used for each unit statically tested.

b) NTS shall include centrifuge speed of revolution for each unit j statically tested.

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o Bechtel Power Corporation Mr. Mark Schlet:

Auguar 4, 1983 . f Page 3 7

6 c) In accordance with NTS telephone conversation with Patel on 8/3/83, the word " monitoring" in the Patel letter to NTS shall read l " Mounting." Patel has informed NTS that the original photographs shall be mailed to Bechtel to clarify the mounting orientation of the test articles. No further action by -VIS was required for this comments.

3. Valve operating times were generally determined by visual inspection l of the rotating cam and utilization of a stop watch a described in Paragraph 5.2.1.2. As this method of obtaining accurate valve operating times was not appropriate during static testing, the operating times were recorded indirectly by monitoring current draw te the valve. The current versus time traces shown on PaFes B-3 and B-4 of the report show valve operating times of 6.0 seconds for each close to open andopen to close operation cycle during testing. The times on page 25 shall be corrected to correspond with the traces shown on Pages B-3 and B-4. The calibration of the recording device has been verified. The accuracy of the device is three percent. The pre and

{ . . post operating times shown on Page 14 may appear to be inconsistent with those shown on the traces, reference Pages B-1 and B-5. Due to the operating characteristics of the valve, valve seating and cam movement may stop prior to cessation of current draw. This reason may explain why the pre and post operating times, recorded by visual inspection of the cam, were shorter than those times shown on the traces. NTS shall label those traces used to obtain data for Pages 25.

NTS has promised that Patel vill receive Revision C of their report on Wednesday, August 10, 1983. If you have any additional questions or comments please feel free to call.

Sincerely, N. Allen Davidson Structural Dynamist NAD/jb .

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7 r, patel engineers 7 potel enterprises, inc.

) [ .g g kMmu 340 b!ue sonng rd nw suite >3 % o box 9531 huntsville. clabama 35810 205 859-5000 L

f' August 1, 1983 I Clow/Frisch Corporation 40 Chestnut Avenue Westmont, IL 60559 Attention: Mr. J.E. Krueger

Subject:

Bechtel Comments to PEI-TR-83-29 that need be addressed by Clow Corporation

Reference:

Patel Job No. 8220, Clow P.O. No. 30-10469, Clow Job No. 82-2053-(N)-ALL Centlemen:

The following are Bechtel comments to the sulaject report that need to be addressed by Clow. All items fall under the NTS test report section of the

, subject report.

Page 13, Item C:

Justifies the use of 318 ft-lbs instead of 495 ft-lb as required. ,

Page 15, Item B:

Leakage shown is out; of specification.

Page 14 and 15:

Operating times do not meet specification requirements. Need j us tification for this. Please note specification has beers revised to accept these times.

Pages 25; 5.3.3.2:

Operating times too slow.

Please advise PEI of your resolution so that we may incorporate them in to our report if necessary.

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_ ________________---__------_--------.-J

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CL CX C 01 0 Or j- Clow/Frisch Corporation Mr. J.E. Krueger 3

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August 1, 1983 Page 2 i

l General:

Bechtel mentioned that the NODS simply state the deviation without providing rationale or justification. PEI explained to Bechtel that during the tests , that is the sole function of the NODS. Any rationale or justi-fication would need to be discussed with Clow Corporation. (This mainly

, refers to NODS issued for out of tolerance operating times and torques.)

i If is hoped that when Bechtel couples the resolution to these items with the additional Patel responses, that all issues concerning the seismic l qualification will be resolved. If you have any ques tions or comments concerning this matter, please feel free to call.

Sincerely, M

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N. Allen Davidson Structural Dynamist l

NAD/j b cc: Mr. Mark Schletz Bechtel Power Corporation ITT7 V'

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