ML20011F360

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Rev 6 to Preventive Maint Procedure PMP 9.5-41, Testing of Molded Case Circuit Breakers
ML20011F360
Person / Time
Site: 05000000, Haddam Neck
Issue date: 08/02/1988
From:
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20008D796 List:
References
FOIA-89-404 PMP-9.5-41, NUDOCS 9003050195
Download: ML20011F360 (11)
v • d • e


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PROCEDURE COVER SHEET AUG 021988 -

ri PROCEDURE NUMBER TITLE REY.No. 6 i.

PMP-9.5 41 TESTING OF MOLDED CASE CIRCU(T BREAKERS MAJOR i

l ORIGNATOR DATE DEPT.

l Thomas K. Womack 7/6/88-Maintenance.

TECHNICAL REVIEW l

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~ OPERATION '

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HEALTri PHYSICS i

7 C ENGINEERING CHEMISTRY REACTOR ENGR.

SECURITY l

MAINTENANCE f_/t_

STORES y

INST. & CONTROL-QA

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- C ADMIN.

RECORDS l

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DEPARTMENT HEAD REVIEW COMPLETE / BIENNIAL REVIEW 7 @ WS C NO PORC REVIEWREQUIRED

@ WS C NO MAJOR REVISION?

@ WS C NO ENVIRONMENTALIMPACT C WS @ NO ACHANGETOINTENT?

"'WS NO WRITTEN SAFETY EVAL ATTACHED?

C WS' NO SAFETY EVALUATION REQUIRED?[ WS NO UNREVIEWED SAFETYOUESTION?

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APPROVAL f*-

^$/v/r hh PORC W.ETNG NO.

DATE PFCCEDURE RICURES UCENSEDCPiRATCA REMEW7

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&Q WS C NO W 9/87-ATTACHMENT 8.1 ACP i.2 6.5 9003050195 900301 PDR FOIA PEPPERH89-404 PDR 3

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PMP 9.5 41 REV,6 MAJOR Conrecticut Yankee 3

Pave'ntive Maintenance Pmcedurt AUG 0 21988

- PMP 9.5 41 =.

Maintenance Department n

Testing Of. Molded Case Circuit Breakers.

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1.0 PURPOSE

1.1 Objecdve

This procedure provides steps necessary to test overload tripping of Wesdnghouse molded case circuit breakers.

1.2 Applicability

This procedure is a aplicable to Westinghouse molded case circuit breaker types EA, EH, FA, FB, IJFA, HFB and HFD.

1

1.3 Frequency

This procedure shall be performed on a refuel schedule or as needed.

.l l

1 2.0 LICENSE OR ADMINISTRATIVE REOUIREMENTS l

N/A

3.0 REFERENCES

L 3.1 FSAR Section 8.3.1.1.2,480V System Descripdon: Section 8.3.1.1.6, AC Power t

Systems Protection capabilides Section 8.3.2.1,125V DC Power Systern 1

Descripdon.

3.2 Technical Specifications Section 3.12, Station Service Power.

1 3.3 ACP 1,2 2,3, Certification and Idendfication of Qualified Testing Personnet L

3.4L ACP 1.2 5.1 PMMS Trouble Reporting System and Automated Work Orders.

3.5 Instructions for Type W Control Centers, Westinghouse Electric Corporation, I.B.12 129b Effective July,1971 (Manual File Number W 11 80).

3.6 Westinghouse AB De lon Circuit Breakers, Application Data 29160.

4 3.7 Westinghouse AB De lon Circuit Breaken, Applicadon Data 29-167.

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3.8

  • NUSCO Drawings, Drawing Numbers: 16103 30004 Sheets 2,3, and 4; 480 Volt L

One Line Diagram MCCs..

3.9 NEMA Standards Publicadon/NO. AB 2-1980, Procedures fer Verifying the Performance of Molded Case Circuit Breakers.

3.10 - IEEE Standard 621978, IEEE Guide for Field Testing Power Apparatus Insulation.

3.11: Procedure Number PMP 9.5-42, Motor Control Centen.

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REY. 6 MAJOR

E 4.0 '

PREREOUISrmS AUG02Iges

4.1 Personnel

4.1.1 --

Personnel performing this procedure shall be Certified Test Personnel per ACP 1.2 2.3, Certification and Identification Of Qualified Inspection and Testing Personnel.

4.1.2 -

The job supervisor shall review the procedure arw! job requirements prior to.

s_

start of work, 4.2 Measuring an'd Test Equipment: The following equipment or its equivalent I

(i.e., with equal or better accuracy and adequate range to measure the desired

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parameter) shall be required for th. e performance of this procedure.- Instruments.

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utilized in this procedure shall be in current calibration.

4.2.1 Breaker Test Device with capabilities to provide current at 3 and 15 times the current rating of breaker.

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4,2.2 Multimeter (To verify wiring de-energized).

p 4.2.3 Fluke (VOM).

T.2.4 l Megger(500 or 1000VDC).

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4.3 Preliminary Conditions:

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L 4.3.1 Operation Department has completed tag out of subject equipment.

-4.3.2 Work Order signed W.O.#

4.3.3 Radiation Work Permit (RWP) issued, if requised.

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4,4

- Independent Verification: Indicates a verification must be performed by a person p

other than the one actually performing the action step.

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5.0 PRECAUTIONS i

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5.1 Cautions

Procedure contains cautions that apply to specific steps and are displayed L

~ la the procedure immMhtely prior to the applicable step.

5.1.1 Ensure motor controtkr cr breaker assembly is returned to MCC and locked in after completion of testing..

5.1.2 Do not excessively heat breaker.

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5.2 Warnings

Pmeedure contains warnings that ap ply to specific steps a:xi are displayed 4

in the procedure immediately prior to the applicable step.

5.2.1 Check all wires with a voltage tester prior to removing or installing breaker rr motor controller for testing.

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PMP 9.5 41 REY. 6 MAJOR 6.0 INSTRUCTIONS AUG 0 21988 mu

- 6.1

==

Introduction:==

nose steps or sections which are not performed shall be marked N/A, and a line drawn through the following consecutive steps not performed.

6.1.1 VERIFY all prerequisite steps are met.

6.1.2 RECORD " Applicable MCC/Dist. Panel", "Cabicle Number", and "Affected Equipment Number" in Table 6.1-1, below.

Table 6.1 1 Applicable Equipment Affected licable Cubicle Equipment -

M ist. Panel Number Number 6.1.3 REQUEST Ops.tions to approve unit inspeci.on or appmve unit " Removal -

From Semce.

. SS/SCO NOTE Section 6.2 shall be N/A for molded case breakers not contained in MCC buckets.

6.2 MCC Bucket Removal.

.YYYYYYYYYYYYYYYYYYYYYYVV WARNING Ensure all wiring is de energized prior to working on equipment.

AAAAAAAAAAAAAAAAAAAAAAAA 6.2.1 VERIFY wiring to be lifted is de-energized utilizing a multimeter.

6.2.2 MARK all wiring connections and DRAW a wiring diagram of motor

- controller compartment on Attachment 12.1. VERIFY Independent Verifications have been performed as required.

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P M P 9.5 d 1 REY. 6 MAJOR 6.2

-MCC Bucket Removal (Continued):

M 02 888 6.2.3 DISCONNECT necessary wiring to permit removal of motor controller -

bucket from MCC compartment.

6.2.4 REMOVE motor controller bucket from MCC compamnent.

6.3 Molded Case Breaker Removal.

YYYYYYYYYYYYYYYYYYYVVVYY-9'

_ WARNING Ensure all wiring is de-energized prior to working on equipment.

AAAAAAAAAAAAAA-AAAAAAAAAA 6.3.1 VERIFY wiring to be lifted is de energized utillzing a multimeter.

6.3.2 MARK all wiring connections and DRAW a wiring diapam of breaker on Attachtnent 12.1 VERIFY Independent Verificanons save been performed as required.

VVVYYYYYVVVVVVYYYYYYYYYY I

WARNING J

Do not remove breaker from MCC compartment v.ithout first removing MCC

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bucket.

AAAAAAAAAAAAAAAAAAAAAAAA 6.3.3 DISCONNECT necessary wiring to permit removal of molded case breaker.

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6.3.4 REMOVE molded case breaker.

6.3.5 RECORD mokled case breaker information in Table 6.3 1, below.

Table 6.31 I

Breaker Nameplate Data Breaker Breaker Breaker Breaker Breaker Catalog Serial Frame Current Type Number Number Size -

Rating j

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PMP 9.5 41 REV. 6 MAJOR

+

NOTES AUG 0 2.1988 1.

+ rsia.. :st on any pole must be spaced by at least 20 minutest tests on adjacent poles must be spaced by at least 5 minutes.

acceptable trip o, disposition snall be required if breaker does not meet l 2.

An engineering mes..

i 6.4 Molded Case Circuit Breaker Current Testing.

l 6.4.1 COMPUTE and RECORD " Test CurTents" on Table 6.4 1. (Compute 300% -

I Test Curant by multiplying breaker current rating by the number '3" then, i

compute 1500% Test Current by multiplying breaker current rating by the number "15"),

.j 4

6.4.2 RECORD " Acceptable Trip Times" for the 300% Breaker Current Trip Test

'l from Attachment 12.2 (nermal magnetic molded case cixuit breaker trip times) for breaker to be tested on Table 6.41, below.

1 i

Table 6.4 1 Breaker Test Data 300% Breaker Current Trip Test 1500% Breaker Current Trip Test Test

. Acceptable Trip Tunes Measured Test Measured i

Breaker Current Protn Attachment 12.2 Breaker Current Acceptable Breaker Phase (3 x Rating)

Minimum Maximum Trip Time (15 x Rating) Trip Tune Trip Time 1

A'

< isec.

B

< isec.

C

< Isec.

6.4.3 - OPEN and CLOSE breaker several times ensuring breaker opens and closes successfully without any binding.

6.4.4 300% Breaker Current Test l.

1 a.

CLOSE breaker.

b.

CONNECT test leads to phase "A'.

L c.

APPLY 300% betaker rated cunent to phase "A" rad RECORD time for

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breaker to trip in Table 6.41, Breaker Test Data.

1 1

i d.

TEST continuity of phase "A" and VERIFY phase opened.

I e.

CLOSE breaker, f.

TEST continuity of phase "A" and VERIFY phase shut.

1 g.

WAIT 5 minutes then PEPEAT steps 6.4.4 a thru f for phase "B".

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j 6.4.4 300% Breaker Current Test (Continued)

AUG 0 21988 '

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h. WAIT 5 minutes then REPEAT steps 6.4.4 a thru f for phase "C".

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1.

VERIFY measured trip times agree with table from Attachment 12.2.

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Independent Verification: Measured trip times agree with table from 2.2.

6.4.5 1500% Breaker Current Test.

a.

CLOSE breaker.

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Do not excessively heat breaker. If breaker does not trip within its recommended trip time current flow to breaker should be discontinued.

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APPLY 1500% breaker rated current to phase "A" and RECORD time for breaker to trip in Table 6.4-1, Breaker Test Data.

c. ' TEST continuity of phase "A" and VERIFY phase opened.
d. CLOSE breaker, c.

TEST continuity of phase "A" and VERIFY phase shut.

f.

WAITS minutes then REPEAT steps 6.4.5 a thru e for phase "B".

g.

WAIT 5 minutes then REPEAT steps 6.4.5 a thru e for phase "C".

t VERIFY measured trip times < 1 second.

i, Independent Verification: Measured trip times- < 1 second.

i'

- 6.5 Molded Case Circuit Breaker Meggering:

6.5.1 DETERMINE voltage to megger molded case breaker at fium table 6.5 1, below.

Table 6.51 Megger Voltage Table Breaker Operating Voltage Megger Voltage 125VDC 500VDC t'

480VAC 1000VDC a

6.5.2 MEGGER breaker Ilne to Load on each phase with breaker open. RECORD information on Table 6.5-2, Molded Case Breaker Megger Readings.

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6.5 Molded Case Circuit Breaker Meggering (Continued):

MEOGER breaker ase to hase with breaker closed. RECORD N 088 l

6.5.3 information on Tab 6.5 2, bolded Case Breaker Megger Readings.

Table 6.5 2 Molded Case Breaker Megger Readings Acceptable Measured Test Breaker Megger Megger Megger Connections-Status Voltage Reading Reading Line to lead 0 A Open

>l.0MO MQ Line to Load 0 B Open

>l.0MO MQ Jine to lead 0 C Open

>l.0MO MQ O A to O B Closed

>l.0MO MG 0 A to O C Closed

>l.0MO MQ O B to O C Closed

>l.0MO MO 6.5.3 Independent Verification: Megger readings >l megohm.

6.6 Resistance Testing of Molded Case Breaker Contacts.

6.6.1 CLOSE breaker.

6.6.2 TEST circuit breaker resistance of each phase with a ohmmeter (Fluke).

RECORD tradings in table 6.61 below.

Table 6.61 Breaker Resistance Readings ateaswed Test Breaker Resistance Connections Status Reading Une to Load 0 A Closed O

Line to Load 0 B Closed O

Line tolead 0 C Closed O

6.7 Restoration / Cleanup:

6.7.1 DISCONNECT testleads.

6.7.2 MCC bucket preparation.

a.

RECONNECT wiring on molded case breaker contained in MCC bucket per Attachment 12.1. VERIFY Independent Verifications have been performed, as required.

b.. INSPECT MCC bucket wiring and terminal connections for tightness and any evidence of overheating.

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6.7L Restoration / Cleanup (Continued):

AUG 0 21988-I YYYYYYYYYYYYYYYYYYYYYYYY WARNING Installation of breaker into MCC or distribution panel with breaker closed will energize load side of breaker.

AAAAAAAAAAAAAAAAAAAAAAAA 6.7.3 ENSURE molded case breaker is open.

6.7.4 INSTALL breaker in distribution panel, or motor controller bucket in MCC compartment. -

6.7.5 RECONNECT wiring per drawingin Attachment 12.1. VERIFY Independent Verificauons have been performed, as required.

6. 7.6 NOTIFY Operations that equiprnent is available for service.

SS/SCO 7.0 CHECKLISTS N/A 8.0 ACCEFANCE CRITERIA 8.1 All work and required testing has been completed in acconiance with this procedure.

9.0 -

REVIEW AND SIGNOFF' t

Performed By

/

Date L

(Signature)

(Initials)

Performed By

/

Date L

(Signature)

(Initials) l L:

' Approved By Date Reviewed By Date 10.0 FOO1 NOTES t

N/A W

11.0

SUMMARY

OF CHANGES 8 of 11 l

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1.T PMP 9.5 41' o

REV,6 MAJOR

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. I 1.1 '. He entire procedure was changed to provide a standard format to help ensure correct, consistent, and complete procedures.

I1.2 - Breaker types IIFD and EA added to procedure.

l1.3 Acceptance criteria added for each breaker type from breaker curves.

-~

I1.4 New secdon added for breaker meggering.

I1.5 New section added for recording breaker contact resistance (for information only).

11.6 Updated references to new FSAR and Technical Specificadons.

I 1.7 Incorporated Temporary Procedure Changes: 88 429 and 88 205.

12.0 ATTACHMENTS

,J 12.1 Motor control center and molded case breaker field prepared equiprnent wiring connection diagram.

12.2 nermal magnetic molded case circuit breaker trip times.

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!!! p ATTACHMENT 11' s

' AUG 0 21988 MOTOR CONTROL CENTER AND MOLDED CASit BREAKFR FIELD PREPARED ps EOU PMENT WIRINO CONN ECT ON DIAGRAM-o NOTE! UTTLIZE ADDITIONAL SHEETS ~AS NECESSARY 1

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i ISad Termin=% Diagram Prepared Cornponent Wires Removed -

Component Wires Replaced-4 Initials Initials Inidals t

n Independant VenficationInitials Independant Verification Initials Independant Verification Initials -

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y PMP 9.5 41 REV, 6 MAJOR ATTACHMENT 12.2 AUG 0 21988

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Thermal mnenetic molded case circuit breaker trip times, w

1 NOTE These trip times am for non adjustable instantaneous trip breakers only.

g 300% Trip Test Current Acceptable Trip Tunes Bmaker Number Range in (Seconds)

Type Poles (Amps)

Minimum Maximum

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EA 1

15-60 10 27 EA 1

70-100 6

26 EA 2,3 15 60 9

30 EA 2,3 70-100 11 26 EH 1

15 60 9.5 26 EH 1

70-100 5

17 EH 2,3 15 60 10 32 EH 2,3 70 100 5.5 20 FA 2,3,4 10-40 10 25 e

FA 2,3,4 125-150 26 42 FA 2,3,4 50-100 20 44 FB 2,3 15-40 10 26 FB 2,3 50 70 25 44 FB 2,3 90-150 23 60 7

HFA 2,3 10-40 10 25 HFA 2,3 50-100 21 44 HFB 1

15-40 7.5 20 7

HFB 1

50-70 21 36 Ht a 1

90-100 22 60 HFB 2,3 15-40 10.5 26 HFB 2,3 50 70 25 42 HFB 2,3 90-150 23 60 HFD 2,3 15 9

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PROCEDUR O

R SHEET PROCEDURE NUM8[ TITLE N

' REV. NO. 6 PMP 9.5 41 TESTING OF MOLDED CASE CIR IT BREA ERS MAJOR p,

omas K. Womack 7/6/88 Maintenance !

0 TECHNIC AL REVIEW

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{ OPERATION

[ HEALTH PHYSICS C ENGINEERING

[ CHEMISTRY

[ REACTORENGR.

[ SECURfTY l

0 MAINTENANCE g/t_

[ STORES

[ INST. & CONTROL CA I

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[ ADMIN.

[ RECORDS L

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DEPARTMENT HEAD REVIEW l-COMPLETE / BIENNIAL REVIEW 7 @ WS C NOPORC REVIEW REQUIRED

@ WS C NO MAJOR REVISION?

@ WS C NO ENVIRONMENTAL NPACT

[ WS @ NO ACHANGETOINTENT7

[WS NO WRflTEN SAFETY EVAL ATTACHED?

[WS[NO EAFETY. EVALUATION REQUIRED?U WS NO UNREVIEWEDSWETYOVESTION?

[WS NO gj APPROVAL f'

$/Y/r kh hh PCAC MEETNG No.

OATE PROCEDURE-R50URES UCENSEDOP$tATOR REVIEW 7 gJJ M

hg WS NO 7 9/87 ATTACHMENT 8.1 ACP 1.2 6.5

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i-PMP 9.5 41 _

REY. 6 MAJOR Connecticut Yankee Prevendve Maintenance Pmeedure AUG 021988 PMP 9.5-41 Maintenance Depenment Testing-Of Molded Case Circuit Breakers.

1.0 PURPOSE

1.1 Objective

his procedure pmvides steps necessary to test overload tripping of Westinghouse molded case circuit breakers.

1.2 Applicability

This procedure is a spilcable to Westinghouse molded case circuit breaker types EA, EH, FA, FB,- IfFA, HFB and HFD.

1.3 Frequency

his procedure shall be performed on a refuel schedule or as needed.

2.0 LICENSE OR ADMINISTRATIVE REOUTREMENTS

-N/A-3.0

' REFERENCES 3.1:

FSAR Section 8.3.1.1.2,480V System Descripdon: Section 8.3.1.1.6, AC Power

. Systems Protection Capabilides; Section 8.3.2.1,125V DC Power System Description.

3.2 Technical Specifications Section 3.12, Station Service Power.

3.3 ACP 1.2 2.3, Certification and Identification of Qualified Testing Personnel.

3.4

' ACP 1.2 5.1, PMMS Tmuble Reporting System and Automated Work Orders.

3.5 Instructions for Type W Control Centers, Westinghouse Electric Corporation, I.B.12 129b Effective July,1971 (Manual File Number W 11-80).

3,6 Westinghouse AB De lon Cimuit Breakers, Application Data 29-160.

L

- 3.7 Westinghouse AB De lon Circuit Breakers, Application Data 29-167.

3.8-NUSCO Drawings, Drawing Numbers: 16103-30004 Sheets 2, 3, and 4; 480 Volt OneIlne Diagram MCCs.

3.9 NEMA Standards Pubilcation/NO AB 2-1980, Procedures for Verifying the Performance of Molded Case Cimuit Breakers.

3.10 IEEE Standard 62-1978, IEEE Guide for Field Testing Power Apparatus Insulation.

3.11 Procedure Number PMP 9.5-42, Motor Control Centers.

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PMP 9.5 41 REY, 6 MAJOR

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4.0 PREREOUISI'ES AUG 021988

4.1. Personnel

4.1.1 Personnel performing this procedure shall be Certified Test Personnel per ACP 1.2 2.3, Cemfication and Identification Of Qualified Inspection and

'l Testing Personnel 4.1.2

'Ihe job supervisor shall review the procedure and job requirements prior to start of work.

l 4.2 Measuring and Test Equipment: "Ihe following equipment or its equivalent (i.e., with equal or better accuracy and adequate range to measure the desired-parameter) shall be required for the performance of this procedure. Instruments utilized in this procedure shall be in current calibration.-

i 4.2.1' Breaker Test Device with capabilities to provide current at 3 and 15 times the 1

current rating of breaka.

4.2.2 Multimeter (To verify wiring de-energized).

4.2.3 Fluke (VOM).

4.2.4 Megger(500 or 1000VDC).

4.3 Pre!!minary Conditions:

'4.3.1 Operation Department has completed tag out of subject equipment.

4.3.2 -

Work Order signed W.O.#

4.3.3 Radiation Work Permit (RWP) issued, if required.

4.4 Independent Verification: Indicates a verification must be performed by a person other than the one actually performing the action step.

i 4

l-5.0 ERECAUTIONS

'5.1' Cautions: Procedure contains cautions that apply to specific steps and are displayed in the piecedure immediately prior to the applicable step.

5.1.1 Ensure motor controller or breaker assembly is returned to MCC and locked in after completion of testing.

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5.1.2 Do not excessively heat breaker.

5.2 Wamings

Procedure contains wamings that apply to specific steps and are displayed

~

in the procedure imm~Iletely prior to the applicable step.

5.2.1 Check all wires with a voltage tester prior to removing or installing breaker or motor controller for testing.

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REY. 6 MAJOR

'6,0-INSTRUCTIONS INmALS 6.1

==

Introduction:==

Those steps or sections which are not performed shall be marked N/A, and a line drawn through the following consecutive steps not performed.

L 6.1.1-VERIFY all prerequisite steps are met.

6.1.2 RECORD " Applicable MCC/Dist. Panel", " Cubicle Number", and "Affected Equipment Number" in Table 6.1 1, below.

Table 6.1 1 Applicaole Equipment Affected Applicable Cubicle Equipment MCC/Dist. Panel Number Number L

i 6.1.3 REQUEST Oprations to approve unit inspection or approve unit " Removal From Service.

SS/SCO NOTE i

Section 6.2 shall be N/A for molded case breakers not contained in MCC buckets.

1 6.2 MCC Bucket Removal.

YVVYYYYYYYYYYYYYYYYYYYYY

~ WARNING

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Ensure all wiring is de energized prior to working on equipment.

AAAAAAAAAAAAAAAAAAAAAAAA 6.2.1 VERIFY wiring to be lifted is de-energized utilizing a multimeter.

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6.2.2 MARK all wiring connections and DRAW a wiring diagram of motor V

controller compartment on Attachment 12.1. VERIFY Independent

)-

Verifications have been performed as required.

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F P M P 9.5 41.

REY. 6 MAJOR 6.2 MCC Bucket Removal (Continued):

AUG 0 21988 6.2.3 DISCONNECT necessary wiring to permit removal of motor controller bucket fmm MCC compartment.

6.2.4 i REMOVE motor controller bucket from MCC compartment.

- 6.3 Molded Case Breaker Removal.

YYYYYYYYYYYYYYYYYYYYYYYY

- WA RNING

^

j Ensure all wiring is de energized prior to working on equipment.

AAAAAAAAAAAAAAAAAAAAAAAA-6.3.1 VERIFY wiring to be lifted is de-energized utilizing a multimeter.

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6.3.2

- MARK all wiring connections and DRAW a wiring diapam of breaker on 2.1 VERIFY Independent Verificanons uve been performed 4

as required.

YYYYYYYYYYVVVYYYYYYYYYYY WARNING Do not remove breaker from MCC compartment without first removing MCC bucket.

AAAAAAAAAAAAAAAAAAAAAAAA-6.3.3 DISCONNECT necessary wiring to permit removal of molded case breaker.

6.3.4 REMOVE molded case breaker.

6.3.5

- RECORD molded case breaker information in Table 6.3 1, below.

Table 6.31 Breaker Nameplate Data Breaker Breaker Breaker Breaker Breake Catalog Serial Frame Current Type Number Number Size Rating h

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P M P 9.5 41 REY. 6 MAJOR NOTES AUG 0 2 1988

.1., Repeated test on any pole must be spaced by at least 20 mihutes; tests on adjacent poles must be spaced by at least 5 minutes.

2.

An engineering disposition shall be required if breaker does not meet acceptable trip nmes.

6.4 Molded Case Circuit Breaker Current Testing.

6.4,1 COMPUTE and RECORD " Test Cunents" on Table 6.4 1. (Compute 300%

Test Curant by multiplying breaker current rating by the number '3" then,.

compute 1500% Test Current by multiplying breaker current rating by the number "15").

6.4.2 RECORD " Acceptable Trip Times" for the 300% Breaker Current Trip Test fmm Attachment 12.2 (nennal magnetic molded case circuit breaker trip times) for breaker to be tested on Table 6.4-1. below.

Table 6.4 1 Breaker Test Data 300% Breaker Current Trip Test 1500% Breaker Curant Trip Test Test Acceptable Trip Times Measured Test Measured Breaker Current From Attachment 12.2 Breaker Cunent Acceptable Breaker

' Phase (3 x Rating)

Minimum Maximum Trip Time (15 x Rating) Trip Tune Trip Tune A

< Isec.

B

< Isec.

C

< Isec.

6.4.3 OPEN and CLOSE breaker several times ensuring breaker opens and closes

- i successfully without any binding.

6.4.4-300 % Breaker Current Test a.

CLOSE breaker.

b.

CONNECT test leads to phase "A".

c.

APPLY 300% breaker rated curmnt to phase "A" and RECORD time for breaker to trip in Table 6.4-1, Breaker Test Data.

d.

TEST continuity of phase "A" and VERIFY phase opened.

c.

CLOSE breaker.

f.

TEST continuity of phase "A" and VERIFY phase shut.

g.

WAIT 5 minutes then REPEAT steps 6.4.4 a thru f for phase "B".

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PMP 9.5 41 REY. 6 MAJOR n.

6.4.4 300%' Breaker Current Test (Continued)

M 02 $88

h. WAIT $ minutes then REPEAT steps 6.4.4 a thru f for phase "C".

1.

VERIFY measured trip times agree with table from Attachment 12.2 '

j.

Independent Verification: Measured trip times agree with table from

) 2.2.

6.4.5 1500% Breaker Current Test.

I a.

CLOSE breaker.

................... g....................

Do not excessively heat breaker. If breaker does not trip within its recommended trip time current flow to breaker should be discontinued.

i iI I I I I I I I y V U U U U I I I I I I I I I II I I I y_I y y i I I I I I I I y y. I b.

APPLY 1500% breaker rated current to phase "A" and RECORD time for breaker to trip in Table 6.41, Breaker Test Data.

c.

TEST continuity of phase "A" and VERIFY phase opened.

d.

CLOSE breaker, c.

TEST contintity of phase "A" and VERIFY phase shut.

I f.

WAIT S minutes then REPEAT steps 6.4.5 a thru e for phase "B".

g.

WAIT S minutes then REPEAT steps 6.4.5 a thru e for phase "C".

L h.

VERIFY measured trip times < 1 second.

l 1.

Independent Verification: Measured trip times < 1 second.

6.5 Molded Case Circuit Breaker Meggering:

6.5.1 Dim!RMINE voltage to megger molded case breaker at fmm table 6.5-1, below.

Table 6.51 Megger Voltage Table Breaker Operating Voltage Megger Voltage 125VDC 500VDC 480VAC 1000VDC 6.5.2 MEGGER breaker Line to Load on each phase with breaker open. RECORD information on Table 6.5-2, Molded Case Breaker Megger Readings.

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4 PMP 9.5 41 ~

-i

~~

REV 6 MAJOR l

6.5 ' Molded Case Circuit Breaker Meggering (Continued):

hase with breaker closed. RECORD 80 6.5.3 ' MEOGER breaker >hase to bolded Case Breaker Megger Readings.

information on Tab e 6.5 2, Table 6.5 2 Molded Case Breaker Megger Readings 1

Acceptable MeasurM Test Breaker Megger Megger Megger

. Connections Status Voltage Reading Read ng Line to load 0 A Open '

>1.0MO MO Line to lead 0 B -

Open

>1.0MO MO Line to Load 0 C Open

>l.0MO MO O A to O B Cosed

>l.0MO

'MO O A to O C Cosed

>l.0MO MO O B to O C Cosed

>l.0MO

'MO 6.5.3 Independent Verification: Megger readings >l rnegohm.

6.6 Resistance Testing of Molded Case Breaker Contacts.

6.6.1 CLOSE breaker.

L.

6.6.2 TEST circuit breaker resistance of each phase with a ohmmeter (Fluke).

RECORD readings in table 6.61 below.

Table 6.61 Breaker Resistance Readings Measured Test Breaker Resistance Connections Status Reading Une te lead 0 A Cosed O

Line to I. cad 0 B Cosed O

Line to Load 0 C Cosed O

6.7-Restoration / Cleanup:

6.7.1 DISCONNECT testleads.

6.7.2 MCC bucket preparation.

a.

RECONNECT wiring on rnolded case breaker contained in MCC j

bucket per Attachment 12.1. VERIFY Independent Verifications have been performed, as required.

b. INSPECT MCC bucket wiring and terminal connections for tightness and any evidence of ovedicating.

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4 P M P 9.5 41 j

REY. 6 MAJOR 6.7 Restoration / Cleanup (Continued):

~

AUG 0 21988 YYYYYYYYYYYYYYYYYYYYYYYY WARNING Installation of breaker into MCC or distribution panel with breaker closed will energize load side of breaker.

AAAAAAAAAAAAAAAAAAAAAAAA 6.7.3 ENSURE molded case breaker is open.

6.7.4 INSTAI.L breaker in distribution panel, or motor controller bucket in MCC compartment.

6,7.5 RECONNECT wiring per drawingin Attachment 12.1. VERIFY Independent Verificanons have been pedonned, as required.

6. 7.6 NOTIFY Operations that equipment is available for service.

l SS/SCO 7.0 CHECKLISTS i

N/A 8.0 ACCEPTANCE CRrmRIA 8.1 All work and requimi tesdng has been completed in accordance with this procedure.

9.0 REVIEW AND SIGNOFF

- Pedormed By

/

Date (Signature)

(Initials)

- Perforrned By

/

Date (Signature)

(Initials)

Approved By Date Reviewed By Date 10.0 FOOTNOTES N/A p

11.0

SUMMARY

OF CHANGES 8 of 11

i z.+

AUG 0 21986 l

I PMP 9.5 41-REY. 6 MAJOR 11.1' ne entire procedure was changed to provide a standard format to help ensure correct, consistent, and complete procedures.

11.2 - Breaker types HFD and EA added to procedure.

11.3 Acceptance criteria added for each br:aker type from breaker curves.

11.4' New section added for breaker meggering.

.11.5 New section added for recording breaker contact resistance (for information only).

11.6 Updated references to new FSAR and Technical Spec fications.

'11.7 IncorporatedTemporary Pmeedure Changes: 88-429 and 88 205.

l 1

12.0 ATTACHMENTS l

12.1 Motor control center and molded case breaker field prepared equipment wiring connection diagram.

12.2 Thermal magnetic molded case circuit breaker trip dmes.

i 9 of 11

e p

4. ;.

yy

' k:

-;b

.s PM P '. 9.5 41 REY. 6 MAJOR =

1

/

ATTACHMENT 12.1 -

MG 0 21988 MOTOR CONTROL CENTER AND MOLDED CASlt BREAKER FIELD PREPARED.

EOU [PMENT WIRING CONNECT 'ON DIACRAM -

j?

.. UTILIZE ADDITIONAL SHEETS AS NECESSARY-i 7

. NOTE!

l l

A 1

4 L

i e

Lead Termination Diagram Prepared Cornponent Wtres Removed Cornponent Wires Replaced I

Initials Initials Initials Independant Ven5 cation Initials Independant Verification Initials Independant Verifration Initials 10 of11

.._g a.

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.... ~.

.-a s

x..-~.

~ -

.~3' 2 P;

..)

a i

4-PMP 9.5 41 REY. 6 MAJOR 3

ATTACHMENT 12.2 MG 021988 Thermal mannetic molded case circuit breaker trio times.

- 1 NOTE These trip times are for non adjustable instantaneous trip breakers only, I

300% Trip Test Current Acceptable Trip Tunes Breaker Number Range m (Seconds)

Type Poles (Amps)

Minimum Maximum EA 1

15 60 10 27 EA 1-70-100 6

26 EA 2,3 15-60 9

30 EA 2,3 70 100 11 26 EH 1

15 60 9.5 26 EH I

70-100 5

17 EH 2,3 15 60 10 32 EH 2,3 70 100 5.5 20 FA 2,3,4 10-40 10 25 FA 2,3,4 125 150 26 42 FA 2,3,4 50-100 20 44 FB 2,3 15-40 10 26 FB 2,3 50 70 25 44 FB 2,3 90 150 23 60 HFA 2,3 10 40 10 25 HFA 2,3 50 100 21 44 HFB 1

15-40 7.5 20 HFB 1

50-70 21 36 HFB 1

90-100 22 60 HFB 2,3 15-40 10.5 26 HFB 2,3 50 70 25 42 HFB 2,3 90 150 23 60 HFD 2,3 15 9

70

)

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