ML20092L766

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Discusses Progress on Commitments Identified in Util Re Standby Liquid Control Sys.Checkout & Initial Operations Test Forms for Power Cabling & Proposed Tech Specs Encl
ML20092L766
Person / Time
Site: Fermi 
Issue date: 06/22/1984
From: Jens W
DETROIT EDISON CO.
To: Youngblood B
Office of Nuclear Reactor Regulation
References
NUDOCS 8407020002
Download: ML20092L766 (18)
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Text

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Wayne H. Jens N$e te>ns Dehol[

2000 Second Avenue l % p gtga g g n 48228 June 22, 1984 EF2-68267

' Director of Nuclear Reactor Regulation Attention:

Mr.

B.

J.

Youngblood, Chief Licensing Branch No. 1 t

-Division of Licensing U.

S.

Nuclear Regulatory Commission Washington, D.

C, 20555

Dear Mr.'Youngblood:

References:

(1)

Fermi 2 NRC Docket No. 50-341 (2)

Letter from Detroit Edison to NRC,

" Standby Liquid Control System",

EF2-64548, August 17, 1983 (3)- Letter from NRC to Detroit Edison,

" Summary of Meeting Regarding the Standby Liquid Control System on July 7, 1983",

July 19, 1983

Subject:

Standby Liquid Control System

-The following information is. presented to indicate how Detroit Edison has addressed the commitments identified in Reference 2.

1.

Commitment Perform a QA/QC audit on all terminations of the.SLCS instrumentation,= control and_ power cables associated with the-injection of the boron solution.

Action Taken A QA/QC auditcof'the 110 SLCS cables has been per-formed.

Seven nonconformances of a minor nature were identified and nonconformance reports were written-to track their disposition.

Of the seven-nonconformances, five'were due to cables missing' identification tags et the time of the inspection, and two were improperly terminated shield cables.

With the resolution of these minor non-conformances, the cables are considered to be installed and terminated to good quality construction standards.

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-Commitmend i-

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' ' J ' Provide':th'e tresults ; of the high voltage tests' of the -

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' ?All one hundred1and ten (110) cables associated with I

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. the SLCS. have jbeen Jtested per ; Edison's generic Checkout f

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!andrInitial(Operation testEprogram' procedures which are f

&(p V O fapplicablento'both'thessafety-related and nonsafety-as n

' *related, systems... All " cables;were.tes ted : satisf acto-rilyn Copies"of theLtest'results of the SLCS pump y

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~ power. cables are; provided.;in Attachment 1.

The remain-y g,, " ;ing' (iJe., contr.ol')(cable tes t results are available in

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_ 'n the Startiup Resource _ Center-System Files, if you i

7 jpC. ;choos'efto audit / review'them.

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Commitmenti w..

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.Ferform :a : design drawing-review of the ' cables. feeding L'

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'off..these: cables!could'be affscted.by a common fault; off MCCL72B.4C and MCC 72E-5B'to determine-whether any

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Action Taken-

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'A.: review of the cables ro'tedifrom MCCX72B-4C and.MCC l

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172E-5B has been completed toidetermine whether 'anyf of=

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theseicables could ~be af fected by a common f ault.

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review.was ' performed by. computer. using the
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ftingtdata > files to ' identify' alle power or control: cable ;

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trays which containc. cables that=terminat'e'atteither-MCC~

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- 72B-4C.or'MCC172E-5B.-

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' As a fconsequence_ of f the re' view, -five interactions were

~ident'ified-where! cables from the two MCCs in question 1

shared:the(same-cable,. trays.-=two"with control' cabling

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,. and ethree 'with power' cabling. -All interactions are.

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-consideredfacceptable by' Detroit Edison ~.

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~}detaillon'the"interactionseis provided below.

i 1De'scription of 'Iriteractions:

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- Control Cabling ~- The'two control cable inter-

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oi 1 actions all contained cable associated with the -

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yhs-control?of the two SLCS pumps.

The:two areas of i

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Mr._B. J. Youngblood June 22, 1984 EF2-68267 Page 3 interaction arise from:

1) the common cable runs coming from the single SLCS pump selector switch

.in the Control Room;.and 2) those going directly.

to the: local common test panel in'the area of the 2

pumps themselves.

During 'a brief part of one of the common runs there is also a control cable for Lthe site. evacuation. alarm which operates from MCC s

~72B-4C. 'All of these' cables are low voltage and are. protected.by fusing.

o, Power Cabling - The three interaction areas for power cabling are as follows:

1)

One area, as described in the July 7th meet-ing,. consists of the cable tray run i'amedi-ately feeding the SLCS pumps themse] /es. This run contains. the1 power feeds to botn pumps.

2)

The second area consists of.a cable tray run which contains the power feeder cables to MCC 72B-4C and a cable from MCC 72E-5B to the RPS J

MG Set B.

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The, third area, similar to 2, consists of a cable' tray run.which'contains the power feeder cables to MCC'72E-5B and cables from the other MCC.(MCC 72B-4C) which feed secur-ity' feed #2 to.the guardhouse and the1evacu-ation alarm siren.

A'll.feedsIfrom the MCCs are protected by fusing.

TheDpower feeds to the' motor control centers are protected by ' qualified lE circuit breakers at their sources.

Justification:

The : relatively 111mited expc=ure between the. cables from

'the two MCCs plus the. electrical isolaticn provided (fusing, breakers) in all cases makes;the probability-p lof both -MCCs being af fected by a ' fault in one of the loads or' power feeds.to.one MCC extremely remote.

This is, especiallyntrue when.one limits consideration to the

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power

  • cables.only;-since faults in control cabling are generally. recognized not to-cause cable ~to cable fail-c ure's. due.to' theirJ-inherent low power In the one Y

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  • i Jinst'ance-ofithe power - cabling Lin the vicinity.;of 3 the x

7 pumps, other:routingvis impractical, especi' ally consid-lering,the"closefproximity ofrthe: pumps;themselves.

In

,:the'otherftwo instances,-one. failure mode is protected-s

' c;" o by5alCla'ss:lE breaker-at theysource'(power feed'to the

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MCC)}and the:other is protected'by fuses at the MCC.-

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s.JInfaddition, the MCCs,.cablesvandLother pertinent elec-ltrical[componentsLwere purchased to the. same specifica-4 o

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tions (exceptiforldocumentationirequirements)-as Class

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^lELequipment. 'As;statedLin,thelFSAR, the MCCs, the lSLCS1 pumps,Jand thelapplicable cable tray supports have

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jalso;been:Eseismically qualified.

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iconsidering the~above7and considering the'_ draft'ATWS.

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- rule frecognizes.a : lack 9of nredundancy,for ATWS events

. :(e.g.,.dualipump operation;is permitted), Detroit

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intended' purpose.

!and the: sys. tem design suf ficientlyDreliable' for its-f

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Commitment-y m

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$ Review'the'SLCSJdesign and: construction' documentation-

,A iplusiwalkdown the SLCScin,the? plant:to? verify that the wc 7 w-tsystem.is(designedLand constructed to high quality-tstandards.

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Actioni.Takenj y

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Design and " construction"do'cumsnts reviewed consisted of g
the following
. ~ piping and' instrumentation drawings J'

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fverified via;walkdown;jpiping,weldjdocument'ation (i.e.,

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' Form'-N-5, data ' reports)Xv'erifiedy complete; piping; hanger

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~ installation 1 documentation (reviewed as part of,the

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~ system; turnover: process) reviewed to verify' it: refle~ ts c

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,a cias-builticondition;?and, SLCS cable pull cards reviewed linusupportfof.Commitmsnt 3 resolution above.-

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lIn.. addition,Ja walkdown was.performsdlof the SLCS to

.ensureithat the 'as-built system; conforms to'the D

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[W 1approvedidesign'and: construction. drawings, and that.it

'was constructed to high quality standards.

The walk-

-down consisted'of. direct observation ~of the mechanical

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'e and1 electrical components and equipment.

A cable rout-

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-ing'and cable tray walkdown wasznot included.

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Mr..B. J. Youngblood June 22,.1984-EF2-68267 Page 5 equipment was reviewed for quality and condition nf equipment,. installation and workmanship, verificction of configuration to approved drawings, and comparison

. to scomparable lE equipment installations.

During the

. walkdown, the system was found to be constructed to high quality standards and in accordance with approved construction. drawings.

Minor items identified are

.being corrected.

5..

Commitment-Subseqiient to the satisfactory completion of the

~

startup testing of the SLCS (currently in progress),

Detroit Edison commits to apply the same QA controls end procedures to SLCS components necessary for the injection of boron as would be applied to safety-relat.ed components at Fermi 2.

This includes-MCC 72B-4C and MCC 72E-5B..

It is understood, however, that the SLCS electrical components were not originally intended,-procured, designed or classified as safety-related as the.termLimplies today.

-Action'Taken The MCC 72B-4C,.MCC.72E-5B and all electrical and' mechanical components associated with the SLCS have been addedLto1the EF2 < Project Q list, and are classi-fiedlas lM to indicate equipment not originally

~

intended,-procured, designed or classified as safety-related but which will.be treated as safety-related henceforth.

6.

Commitment' Propose'an' amendment to the-draft Fermi 2 Technical Specifications for surveillance of electrical isolation devices l associated with the SLCS.

Action Taken A proposed revision to the Fermi 2 Technical ~Speci-fications has been submitted which specifies the o

limiting conditions 1for operation'and surveillance-requirements for.the. circuit breakers and their

associated protective < devices that protect 13 buses.

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copy of the proposed addition is included ua Attachment 12.

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Mr..B..J.- Youngblood!

JuneT22, 1984 EF2-68267.

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Page:6

. If you. have anyJfurther questions,- please: contact

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Mr.

O., Keener Earle-(313) 586-4207.

' Sincerely, 3

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Mr.

P..Dyron Mr. 3: M.' : D. Lynch:

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Checkout and Initial Operations Test Forms for_ Power Cabling t

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...,,,,~..,. ;..-..s August 29, 1980 Revision 8 STARTUP FORM 7.8 CHECKOUT AND INITIAL OPERATIONS TEST PROCEDURE f

ENRICO FERMI ATOMIC POWER PLANT - UNIT 2 ca4 t-o3 -c oot A System PIS Number: M4 tt u a, Date:

10/8/80 Startup System Number: C41-00 System Request Number:

916 E Sys TJtle:

Standby Liquid Control (Control Pump C41-03-C001A)

K. Lamp /J. Honkala fhLO-E. Stockman P. J. ),e.,,f.t~

Startup Test Engineer / U Discipline Test Engineer Lead Startup Test Engineer The following equipment to be tested according to the approved checkout and initial operations test procedure indicated by date needed.

Item Test Procedure Date Date No.

Equipment Description / Number

/ Revision

  1. . Needed Tested J Coments 1

480V.MCC 728-4C-2A-R CAIO.000.026 Rev.3 5-2ct-si

//- 2E - F/

  • [ 7 HFA Relay WA CAin Onn nac; Rev 'l 8-7 'I" O I S-4-8/

3 Prwar rahlo. 91aKRn_a rain nnn n1A Dev et-.5-29-81 S-/ 8 - 8 /

fg4 480V Motor C41-03-C001A CA10.000.031 Rev.3 5-29 8i Io-/ - 6/

geneme - gandby L19uld Control WSMD AS PW r uny wv4 us vvvan unav.vvv.vs2 ncv.

05: I T e X 8.2.

i.' 1 2 l-y G

Bnw Cable.

2 25'/5 2 -oc.

caro mo.oiv een S-M-2/

S-18-8/

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cAIo wo on k 2. 5-M4 r S'-18-8 (

a Released for Test:

MN 9-23 4 [

Test Discipline-Lead Startup Test Engineer Date Test Results Reviewed By:

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S7E - M55 5 -ELECE //-JO - F/

Fakie and T' e

Date Approved By:

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w Tet O' dpiined.ead Startup Test Engineer / Plant I&C Engineer Date

$ /2/3//t Remarks: Reference 61721-2131-1 % REllI5r0R$ INDICATED PE R G n SF n FclIn 0438-8 Ob/u di /ie/G1 2

Testing Reviewed / Approved By: M///

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Startuh' Engineer / Lead Startup Test Enginee-Date OVER

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C&IO Test Form

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TF.000.016.01 Revision 4 Page 1 of 3 Low and Medium Voltage Cable and Cable Buses Test Procedure No.

CAIO-000-016 Revision 3 SU System No. 81//00 Test Leader [fAA/[' 4. [u/ - 7.8 No. 9/4,F-3 Date S'-/ f-7/

Cable No. A14 & YO-Of P15 No. (t/jg.3[ posh ~

Color Code 6 LACK Division 8 of QA 1.evel

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Reference Drawings 6D7/3/-/ Aid-TEST EQUIPMENT

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Type Number Recalibration Date Accuracy 1 M es c //?

3 *] io 3 7 97 r.*3 a

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4 Inspection and Test Reference Verified bv/Date Procedure 3.1 The tagging uquirements of the Startup "A&8 5 /[ ?>

Manual have been complied with.

3.2 LSTE - Electrical released for test.

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3.3 Check that proper cable has been used and that the correct color code has

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3.4 Recalibration due date of equipment has

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[-/f-8' 3.5 Verify that there is no source of backfeed.

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ENRICO 7ERMI 2 C&IO Test Form TF.000.016.01 i

i~n' Revision 4 Page 2 of 3 Inspection and Test Reference Procedure Verified by/Date 6.1 Cable is disconnected from load'.

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7.1 Check the termination and identification 7/pd f-/'

.YI of cables.

7.2 Check that termination hardware is installed and that cable shield is grounded.

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7.3 Check for phasing and continuity.

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7.4 Check for proper electrical clearances.

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f 7.5 Check housing ground connections (cable bus W{'M,I S u-7 -i t i

only).

7.5/7.7 Insulation Checks Phased Megger*

Hi-pot **

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Wire Designation correctly 1000V 35 KVDC 2500V 50 KVDC r

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  • 100 megohms minimum, at a test duration of > 10 seconds.
    • Test duration of the 35KV de and 50KV de test potential is 5 minutes.

Leakage current to be: < 0.35 mA @ 35KVDC

-< 0.5 mA @ 50KVDC pg, g-g -} -

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J/ N 'a 71981 ENRICO FERMI 2 C&IO Test Form TF.000.016.01 Revision 4 Page 3 of 3 Inspection and Tests Procedure Verified bv/Date t

Reference 7.8 Cables were drained for at least'30 minutes.

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8.1 All inspections and test performed satisfac-kd' ' t 8/

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8.2 All deviations have been resolved.

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STARTUP FORM 7.8 CHECK 0UT AND INITIAL OPERATIONS TEST PROCEDURE ENRICO FERMI ATOMIC POWER PLANT - UNIT 2 C ^ll-o,5 -C Cos 6 System PIS Number:

G4W id.e

__Date:

10/A/nn Startup System Number: C41-00 System Request Number: 1569 E System,Ti le: Standby Liquid Control (Control Pump C4103-C001B)

K. L hrp/J.Honkala./

L O-E.StockmanPj),c-~rt Startup Test Engineer / L Discipline Test Engineer Lead Startup Test Engineer.

The following equipment to be tested according to the approved checkout and initial operations test procedure indicated by date needed.

Item-Test Procedure Date Date p.

Equipment Description / Number

/ Revision

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Needed Tested Coments

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2 HFA Relay K2B CAIO.000.045Rev.2 6-29-bl 5 8l a

Power Cable. 214690-0P CAIO.000.016 Rev.4 5-Z 9 -61 5-/8 -8/

4 480V Motor C41-03-C001B CAIO.000.031 Rev.3 5-24-6/

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_g-Scheme - Standby Liquid Control 7Esno AS N-5

^ + C41-03 00010 CMO.0^0.059 "r/

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k-7 3 -? f Test Discipline-Lea Startup Test Engineer Date Test Results Reviewed By: IwI h

ai 6TU-MSSS-ELECT

//-30'd Date Narhe and Ti[Je

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Approved By: Tesf "i=cipiise-Lead Startup Test Engineer / Plant I&C Engineer Date As isisto Remarks: Reference-61721-2131-1

-A RE VM IN S T U DI CAT EIS PER i

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Testing Reviewed / Approved By: d/// M w />d-r/

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Startup Engineer / Lead Startup Test Engineer Date

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ENRICO FERMI 2 j gQ' i C&IO Test Form TF.000.016.01 Revision 4 Page 1 of 3 Low and Medium Voltage Cable and Cable Buses Test Procedure No.

CAIO-000-016 Revision 3 SU System No.

f 4//co Test Leader [#A/[. [. [<f c_ 7.8 No. /S M E-3 Date d'- //,f/

Cable No. 3/d/ 090-0 f PIS No. (4/c3Coci /3 ~

Color Code 6 Lact Division

[s Df QA Level

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b kb dD cd F A

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Location from:

Reference Drawings Gi ?t 3. - t L C-TEST EQUIPMENT Instrument

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Type Number Recalibration Date Accuracy S - /f - 9'l D, OW '

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Inspection and Test Reference Verified by/Date Procedure 3.1 The tagging requirements of the Startup M., 6 -/Y-J' Manual have been complied with.

3.2 LSTE - Electrical released for test.

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been followed.

3.4 Recalibration due date of equipment has N D I'/I',

s not. expired.

3.5 Verify that there is no source of backfeed.

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Revision 4 Page 2 of 3 Inspection and Test t

Reference Procedure Verified by/Date 6.1 Cable is disconnected from load.

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7.1 Check the termination and identification of cables.

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7.2 Check that termination hardware is installed and that cable shield is grounded.

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7.3 Check for phasing and continuity.

W A S-/l,-Fl 7.4 Check for proper electrical clearances.

M C-M 'M 7.5

. Check housing ground connections (ccble bus 4(EN tr?f c I only).

4 7.6/7.7

-Insulation Checks Phased Megger*

Hi-pot **

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Wire Designation correctly 1000V 35 KVDC R

2500V 50 KVDC 6 Lpo L

/j.,.$ up it-28 -V nw-Af//-

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  • 100 megohns minimum, at a test duration of > 10 seconds.
    • Test duration of the 35KV de and 50KV de test potential is 5 minutes.

Leakage current to be: < 0.35 mA 9 35KVDC

< 0.5 mA @ 50KVDC W fit -?!

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JAN 2 71981

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-t' ENRICO FTRMI 2 C&IO Test Form TF.000.016.01

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. Revision 4 Page 3 of 3 Inspection and Tests Procedure Reference Verified by/Date

.7.8 Cables were drained for at least 30 minutes.

"7tW3 5- /4.W 8.1 All inspections and test performed satisfac-M ft - ? S - 6 /

l torily.

8.2 All deviations have been resolved.

V f / 8/

10.1 Cables may be terminated to equipment.

T- / G. il Comments and

Conclusions:

f Test Leader:

&2 c Date:

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Reviewed By:

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E Proposed Re'Jision to Fermi-2 Technical Specifications

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ELECTRICAL POWER SYSTEMS STANDBY-LIQUID-CONTROL SYSTEM ASSOCIATED-ISOLATION DEVICES LIMITING CONDITION FOR OPERATION 3.'8.4.5 All circuit breakers shown in Table 3.8.4.5-1 shall be OPERABLE.

I APPLICABILITY:

When Standby Liquid Control System is required to be operable.-

ACTION:

-With-one or more of the circuit breakers shown in Table 3.8.4.5-1 inoperable either:

a.

Restore the inoperable circuit breaker (s) to OPERABLE status within eight (8) hours, or b.

Trip the inoperable-circuit breaker (s), rack out or remove the device from service within eight (8) hours a'nd verify the circuit breaker (s) to be racked out or removed from' service at least'once per seven (7)' days

-thereafter, and declare the applicable Standby Liquid Control (System (SLCS) component inoperable and apply the appropriate ACTION statement for the SLCS.

SURVEILLANCE REQUIREMENTS

' 4.8.4.5Each'of'the abbve required cir'cuit breaker (s) shall be demonstrated: OPERABLE:

l

~

At' least.onceiper 118 months. by performing a CIIANNEL

a..

CALIBRATION of1the associated ' protective relays and a CilANNEL FUNCTIONAL TEST of each breaker which includes simulation of actuation of the system and verifying that - each relay and associated circuit breaker and overcurrent control ~ circuits' functions as designed.

Lb.

At least once per 60 months by; subjecting each-circuit breaker to'an inspection and preventive maintenance in accordance with procedures prepared in conjunction with'its-manufacturer's recommendations.

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~ TABLE 3.8.4.5-1 Standby Liquid ~ Control System Associated Isolation Devices

.480~v-Motor Control Centers L

MCC 2 72B-4A.

t.

Position 2F SLC Heat. Trace A e

MCC ~ 72B-4C Position 1A Incoming Feed

-Position-2AR SLC Pump A

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- MCC 72C-4A

Position SC SLC Heater A MCC'72E-4B-

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' Position'lAR SLC Heat. Trace B i

4MCC;72E 5B Position 1C

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' Position'2B SLC Pump'B

-Position 2CR-SLC Heater B 4

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'Formi-Unit 2 3/4 8-38 u _

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