ML17250A808

Forwards Addl Info Providing Qualification of Certain Electrical Equipment,Per Commitment in Responding to NRC 800919 Revised Order for Mod of License

ML17250A808
Person / Time
Site:	Ginna
Issue date:	12/08/1980
From:	Maier J ROCHESTER GAS & ELECTRIC CORP.
To:	Crutchfield D Office of Nuclear Reactor Regulation
References
TASK-03-12, TASK-3-12, TASK-RR NUDOCS 8012160240
Download: ML17250A808 (35)

Text

REGULAT Y INFORMATION DISTRIBUTION iYSTEN (RIDS)

AC CESS ION MBR: 8012160240 DOC. DATE: 80/12/08 NOTARIZED:

NO DOCKET 0 FACIL 50244 Robert Emmet Ginna Nuclear Planti Unit 1'i Rochester G

05000244 AUTH. MARIE AUTHOR AFFILIATION NAIERi J. E.

Rochester Gas 5 Electric Corp.

REC IP. M*t'tE RECIPIENT AFFILIATION CRUTCHF IELDi D.

Operating Reactors Branch 5

SUBJECT:

Forwards addi info providing qualification of certain electrical equipmenti per commitment in 801031 ltr responding to MRC 8000919'evised order for mod of license.

4 DISTRIBUTION CODE:

A035S COPIES RECEIVED: LTR J ENCL J SIZE:

TITLE:

SEP Topics NOTES: 1 copy: SEP Sect.

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05000244 RECIPIENT ID CODE/MANE ACTION:

CRUTCHFIELD 04 INTERNAL: A/D YiATL8(GUAL13 HYD/GEO BR 10 NRC 02 G FILE 01

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ZIZS PilEiZ ROCHESTER GAS AND ELECTRIC CORPORATION o

S9 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E.

MAIFR VICE PRESIDENT TELEPHONE ARCA COOK 7I6 546.2700 December 8,

1980 Director of Nuclear Reactor Regulation Attention:

Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch I5 U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

SEP Topic III-12, Environmental Qualification of Electrical Equipment R. E. Ginna Nuclear Power Plant Docket No. 50-244

Dear Mr. Crutchfield:

By letter of October 31, 1980 from J.

E. Maier to Mr. Darrell G.

Eisenhut, RG&E transmitted information concerning the environmental qualification of electrical equipment, as required by the NRC's Revised Order for Modification of License, dated September 19, 1980.

RG&E at that time committed to provide the NRC with additional pertinent information as -it, became available.

Attached is additional information providing the qualification of certain electrical equipment.

This information is also being transmitted to Franklin Research Center in order to expedite their review of RG&E's October 31 submittal.

It will also become a part of RG&E's central location,auditable

records, as required by the NRC's Order for Modification of License of October 24, 1980.

Very truly yours, J.

E. Maier JEM:ng Attachments Joss S

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List of Attachments and Explanations Mailgrams from Joe Drab, Limitorque, to George Wrobel, RG&E, stating that Limitorque Report B0003 does apply to MOV's 852 A,B.

These mailgrams will become part of Reference 53, which will be cited as applicable to Table 3, Item No.

8H, and TER C5257, Paragraph No. 3.3.2.2.

Page A-1011:44 of Reference 65.

This was inadvertently not included in the October 31, 1980 transmittal.

Letter from R. D. Butler, Westinghouse, to Mr. George Wrobel, RG&E, concerning the hydrogen recombiner motor insulation and igniter exciter.

This letter and attachments will become Reference 71.

Since the recombiner motor is not operated during normal operation, but only after an accident, and therefore sees only about a 50'C ambient, a qualified life of >40 years for the insulation is established.

The igniter exciter, which contains no organic materials, should have no aging degradation, and therefore has an established qualified life of >40 years.

Letter from R. B. Budrow to Mr. J.

B. Gardner, June 30,

1970, concerning 'the fan cooler motor splices (Reference 64).

This information applies also to the hydrogen recombiner blower motor splices.

The Westinghouse Drawing ¹206C391, listing the specific materials used in the Ginna splices, has not yet been received.

Information to date indicates a Scotch 70 Mica - Scotch 70

splice, shown to be acceptable.

This drawing will be transmitted when available.

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ESA-EQ-193 Ntestinghouse Water Reactor Electric Corporation Divisions November 17, 1980 Nucteor Technology Olvislon Box 355 PittsburghPennsylvenia 15230 Mr. George i(robel'.

E. Ginna Nuclear Power Plant Unit Hl Rochester Gas 5 Electric Corporation 89 East Avenue Rochester, New York 14649

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Dear hir. Nrobel:

I have reviewed. information concerning the motors and insulation we discussed earlier (RID Report 71-1C2-HADhtC-Rl). It was found that. in Class H

motors silicone rubber,'which has an Ev value of 1.16 for retention of electrical properties, was used.

The.3 Ev for elongation of this compound is not pertinent.

The teflon glass cable was only used in Class H insulation systems for non-nuclear applications.

The Class B motors we discussed had neither silicone or glass tape.

Based upon available information and a test temperature of 200'C for two weeks, the life of the insulation system is five years at Class B limits (130'C total-temperature) or approximately 2.7 years if the least conservative activation energy is used (approximately Ev of 1.0).

Attached please find graphs.

'ost motors are used intermittently and those which are used continuousl>

are not used at their full service factor rating.

This indicates a much greater life 'than those values I have given. If a motor is used in an mibient temperature of 40'C, but is not run at its full capacity, the

'emperature rise in the motor is much less than 80'C.

1'Lith the total temperature less than 130'C, the life of the insulation would be greatly extended.

The above paragraph also applies to the thermoplastic epoxy insulation system supplied by Westinghouse for your Safety Injection Putttp.

In reference to the H2 Recombiner, pleas'e find attached drawing of Igniter/Exciter.

Since there are no organics involved, this should meet qualification criteria.

cco R. B. hfiller A. E. Blanchard C. Faust D. L. McElhaney J. L. Tain G. Butterworth H. Groot "

R. D. Butler

. Environmental Qualification

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Attention:

Subject:

deference:

Mr. J. B. Gardner Ju'ne 30, LS70 Results of Electrical Teste Performed on 83.myles Returned by Westinghouse hetter, B.B. Budrovr to C.V. Fields, Kestinhouae, September

~6,

~98S Various control aud poor cable oplieeo (uxmged and pre-aged} hme been irradiated to 1. 7.". l08 raos by VVeotinghouse El.ctri. Corp.

Pollowizg the ixradhtion, r,'ome c~ the oaxnples vsero autoclaved by Weativ>r~ ouoe at Px~~

institute ao foQcr~vs:

I 0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> at 60p"ig (3100 pym af boric AMadj. to pH af 9.6 with NaOH)

=

i8 hours at 20 psL~

CS2 ho~a =t 5 psi~ (lsaoZ.)

2 hcuro at 00 ps+~ (compressed air at N3 P. )

Electrical teats and dissection Q the eamgles have been completed, the results of rvhich are attached.

The hoped for objectiveo of thio teat aeries have not been completely

attained, due primarQy to t>mes problems that occurred as the tests mere being conducted.

The px oblemo encountered vrero:

I The orfghml achedulo of irradLtion and autoclave@

'eras not adherod to by WestL~ghouse as called for in the reference lettor to Mr.. C, Pielda - inotead, aQ samples were irradiated.

Q.

Additional test samples to replace tho3e irradiated in error v.ere then made up vrith ava~~le cableo,

RG Results of Elec. Tests-p June SO, 1970 materials, etc. and frere rushed to Franklin Inotitute in an attempt to get back on ochedulo.

These oamples twhich were in the form of a ring) were cut in haU in error by the Fran'lin Institute tochnicians and frere of no use.

S.

Two differently colored Scotch VO GQicone rubber tapes (one light gray, one aark gmy in color) xvore used to make several of the splices.

These tvso tapes act quite differently vrhen exposed to irradiation and autoclaving; this indicates that 3 M does make compound changes

. without chan~ing the m,.terial desigetion.

EncidentaDy, S M had been asked if the tmo hoes 7<ere the same 0.".cept for the difference in color and the amber vras 'yes'.

The follovring conclusions can be drawn from the test results:

Control Cable Splices 4

The use of Scotch VO sQicone rubber tape as the individual splice material with an overall layer of Scotch VO and Permacel

{P213) glass tape to bind the indivtdual splices together is an acceptable splice. Tri SQ and Permacel aQicon rubber tape should not be used due to their poor performance under the combination of steam and irradiation.

Pcmrer Cable 8 slices The use af Scotch 70 oQicone rubber tape as t¹ insulating material viith an outer layer of glass tape (Permacel P212) mQ1 probably be an acceptable splice but has to be explored and tested further.

Other comments are; 1.

The use of Scotch 27 glass tape is not recommended due to its tendency to readily burn until all binder

,material has burned off. Permacel P212 glass tape exhibits this tendency to a much lesser degree.

l

r JBG Results of Elec. Tests

-S-0 June 80, 1970 2.

Allsamples which did not have an outer glass tape had Oplit open, exposing the underlying tapes.

S.

Attached are copies of letters sent to me by Nr. C.

Fields indicating the irradiation and autoclaving levels.

RBB/dm R. B. Sudra Engineer

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..guue 80, 1970 I

I "RESULTS OF VOLTAGE TESTS PERFORMED ON POWER CABLE SPLICES THAT HAVE BEEN IRRADIATEDAND/OR AUTOCLAVED Sample Designation Sample Conditioning Cable Make-Up See Note 1

Splice Nake -Up See Note 2 Withstand Breakdown 4 KV 8 IW AC ick-AC DC Rise - EV A-3 4

Irradiated 1/0 HTE, FR Irradiated, 1 0 HTE, FR Autoclaved Irradiated, 1 0 HTE, FR Autoclaved

'Pre-aged, 1 0 HTK, FR Irradiated Bishop, Mica, Bishop Bishop, Mica, Bishop Bishop, Mica, Bishop

Permacel, Mica, Per macel Yes Yes Yes Yes Yes Failed 4 EV Yes Yes 29 7.5 A-5 A-6 Pre-aged, Irradiated, Autoclaved Pre-aged, Irradiated, Autoclaved Control Pre-aged 0 HTK, PR 0 HTK, PR 10HTE, FR

Permacel,

. Mica, Permacel

Permacel, Mica, Per macel

Permacel, Mica, Permacel Failed

3. 5EV Failed 3 KV Yes Yes 19 A-10 A-ll A-13 C Autoclaved No. 4, HTK,FR Autoclaved No. 4, HTE, FR Autoclaved No. 4, HTE, FR Control 40HTK, FR Autoclaved No. 4, HTK, PR Scotch 70, Mica Scotch 70, P212 Scotch 70, Mica

'cotch 70, P212 Scotch 70, P212 Scotch 70, P212 Scotch 70, Mica Scotch 70, P212 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 25 22 25 Control Control 10HTE, FR 40HTE, FR Scotch 70,

Mica, Scotch 70, P212 Scotch 70, P212 Yes Yes Yes Yes 26

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c"DlvKXJLMV'age 2 Test Results - Power Cable Splices - Irradiated and/or Autoclaved line Sample Desi~nation Sample Conditionin~

Cable Make -Up See Note 1

Splice Make-Up See Nof,e 2 Withstand 4 IQT 8 EOT AC DC Breakdo.a;:

AC @ick-Rise-KV Irradiated No. 4, HTK,FR Bishop, Mica Bishop Yes Yes 21 Irradiated, No. 4, HTK, FR Autoclaved Bishop, Mica Failed Bishop 3 KV B-3 Irradiated, No. 4, HTK,FR Bishop, Mica Yes Yes Autochved Bishop Note 1 -

Cable make-ups are as follows:

a).

1/0 (19),

1 KV, 6/64" HTK insulation (N-98), open glass braid, 4/64" FR jacket (HC-7-11).

. b)

Ho. 4 (7),

1 KV, 5/64" EITK insulation (N-98), 4/64" FR jacket (HC-7-11).

c) 4/0 (19),

1 KV, 6/64" HTK insulation (N-98), open glass braid, 4/64" FR jacket (HC-7-11).

Note 2 -

Splice make-ups are as follows:

a)

Insulation rasped.and coated with Bishop 55-.C adhesive, indents and voids filledwith Dow Corning 899 RTV, one layer, haU-lapped, Bishop No. 20 Tri Sil silicone rubber

tape, one layer,'alf-lapped, 3 M mica tape (IvtX-2301),

one layer, half-lapped, Bishop No.

20 Tri Sil.

See Westinghouse Drawing 206C391.

b)

Make-up same as Item a) except Permacel silicone rubber tape (P-2650) substituted for Tri Sil tape.

c)

Make-up same as Item a) except Scotch 70 (3M) silicone rubber tape substituted for Tri Sil tape and-a half-lapped

'ayer of. Permacel glass tape (P212) was'added over the outer layer of silicone rubber tape.

d)

Insulation rasped and coated with Bishop 55-C adhesive, indents and voids filledwith-Dow Corning 899 RTV, four.

layers, half-lapped, Scotch 70 (3 M) silicone rubber tape, one layer, haU-lapped, Permacel (P212) glass tape.

axn~r coarx nMv Page 3

gest Results - Power Cable Splices - Irr diated and/or Autoclaved June 30, f940 Note 3-Samples were irradiated by a Gamma source to 1.7 x 10 rads in a period af 280 hours0.00324 days <br />0.0778 hours <br />4.62963e-4 weeks <br />1.0654e-4 months <br /> at Westinghouse.

Hole 4-Samples were autoclaved at FranlQin Institute as follows:

2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at 60 psig (2100 ppm of boric acid adj. to pH of 9. 5 with NaOH) 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> at 20 psig

. 492 hours0.00569 days <br />0.137 hours <br />8.134921e-4 weeks <br />1.87206e-4 months <br /> at 5 psig (152 F.)

2, hours at 90 psig (compressed air at 162 F.)

Note 5 -

A. C. withstand voltage was obtained by applying 4 KVA. C. for one minute.

Note 6-A D.C. withstand voltage af 8 KVD.C. was applied for five minutes

,if the splice successfully withstood the A.C. voltage.

Note 7-A. C. breakdown strength was obtained by applying a quick rise voltage at a rate af.1000 volts/second until breakdown if the splice success-fullywithstood the D. C. voltage.

Portions of the above test were personally witnessed by the undersigned, and the data presented above is accurate and complete to the best of my knowledge and belief.

- EBB/dm fC.g. g,~~

R. B. Budrow Engineer Subscribed and sworn to, before me, tbis'~" day of.)'I-'/

1970.

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June 30, 1970

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C O!vIXAWW RESULTS OF VOLTAGE TESTS PERFORMED ON CONTROL CABLE SPLICES TliATHAVE BEEN IRRADIATEDAND/ORAUTOCLAVED Sample D~it Sample Conditionin Individual Splice (See Note 2)

Outer Covering See Note 3

%'ithstand 2.5 KV 5 KV AC DC Breakdown AC Quick-Rise - EV Irradiated Scotch 70 Scotch VO, Scotch 2V Yes Yes

. 16 C-2 C-3 C-11 C-2 Irradiated, Scotch VO Autoclaved Irradiated, Scotch VO Autoclaved Autoclaved Scotch 70 I

Autoclaved Scotch 70 Scotch 70, Scotch 27 Scotch 70, Scotch 27 Scotch 70, P212 Scotch VO-Mica Scotch 70, P212 Yes Yes Yes Yes Yes Yes Yes Yes 15

10. 5

12. 5 16 C-

-C Contr o Scotch cotch 70, P212 Yes Yes D-D-2 Irradiated Scotch VO Scotch 70, Scotch 27 Irradiated, Scotch 70 Scotch VO, Autoclaved Scotch 27 Yes Yes Yes Yes

10. 5 D-3 Irradiated, Scotch VO Autoclaved Scotch 70, Scotch 27 Yes Yes D-4 Pre-.aged, Scotch 70 Scotch 27, Irradiated Scotch 70 Pre-aged, Scotch 70 Scotch 2V, Irradiated,

~

Scotch VO Autoclaved Yes Yes Yes 15 D-6 D

Note 1-Pre-aged, Scotch 70 Scotch 27, Irradiated, Scotch VO Autoclaved Pre-aged Scotc Scotch Scotch 70 Cable make-ups are as follows:

Yes Yes Yes

6. 5 Yes Allsamples except C-11; C-12, C-11-C are seven c'on-ductor No. 12 (V strd. ), 3/64" FR insulation (FII-VO),

4/64" FR jacket (HC-7-11).

b)

Samples C-11, C-12 and C-11-C make-ups - the same

. as Item a) except there are nine conductors.

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Page 2

V Test Results - Control Cable Splices.- Irradiated and/or Autoclaved

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Note 2 -

The individual insulated conductors had the insulation rasped and coa.ted withBishop 55-.C and then were taped with three layers haU-lagged of

, Scotch VO (3M) silicone rubber tape.

Note 3 -

An overall outer covering utes placed over the group of individual con-ductors as follows:

a)

One layer, half-lapped, Scotch VO (3M) silicone rubber

tape, one 1ayer, haU-lapped, Scotch 27 glass tape.

b)

Two layers, haU-lapped, Scotch 70 (3M) silicone rubber

tape, one layer, haU-lapped, Permaoel glass tape (P212).

c):

One layer, half-lapped, Scotch VO silicone rubber tape, one layer, ha.lf-lapped, 3M mica tape (MX-2301), one layer, ha,U-lapped, Scotch 70 silicone rubber tape, one layer, ha,lf-lapped, Permacel glass tape (P212).

U d)

One layer, half-lapped,.Scotch 70 silicone rubber tape,

. one layer, half-lapped, Scotch 2V glass tape.

e)

One layer, half-lapped, Scotch 2V glass tape, bvo layers, haU-lapped,.

Scotch VO silicone rubber tape.

Note 4-Samples were irradia,ted to 1. 7 x 10 rads by a gamma source in a period of 280 hours0.00324 days <br />0.0778 hours <br />4.62963e-4 weeks <br />1.0654e-4 months <br /> at Westinghouse Note 5-Samples were autoclaved at Franklin Institute as follows:

2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at 60.gsig (2100 ppm of boric acid adj. to pH of 9. 5 with NaOH) 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> at.20 gsig 492 hours0.00569 days <br />0.137 hours <br />8.134921e-4 weeks <br />1.87206e-4 months <br /> at 5 psig (152 F.)

Note 6-2 hours at 90 psig (compressed air at 162 F. )

A. C. withstand voltage was obtained by'applying 2. 5 KVA. C.. for one minute.

Note 7-Note 8-D. C. withstand voltage was obtained by applying 5 KV D.C. for five minutes after the A. C. withstand.

A. C. breakdown strength was obtained by applying a quick rise voltage at a rate of 1000 volts/second until breakdown.

Nestinghouse Eiectric Corporation Poser Systems Box355 Pi11sbutghPaasylvxia 15230 NSD-E-CVF-109

'anuary 20, 1970 R; B. Budrow The Kerite Company 49 Day Street

Seymour, Conn.

06483

SUBJECT:

Cable Exposure at FIRL

Dear Hr. Budrow:

IConfirming our telecon of Jan.

19, the following exposures were a

lied b Franklin:

e e app e

y 2 hour0 at 60 psig (2100 ppm of boric acid ad). to pH of 9.5 with NaOH) 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> at 20 psig 492 hours0.00569 days <br />0.137 hours <br />8.134921e-4 weeks <br />1.87206e-4 months <br /> at 5 psig (152'F) hours at 90 psig (compressed air at 162'F)

Zf. there are any further details about the cable. exposure

needed, please let me knowi

/w Sincerely,

/dw cc:

File:

RCFC E

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C. V; 'Fields Engineering Nuclear Services Department

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t BOx355 httstarghPensg~m 15230 December 1, 1969 NSD-E-CVF-970 Mr. R.

B. Budrow The Kerite Company

- 49 Day Street

Seymour, Conn.

• 06483

SUBJECT:

Cable Splice Tests REF: Kerite Letter of Sept.

26.

Dear Mr. Budrow:

Confirming our telecon of Nov. 25, all 18 samples were irradiated to 1.7.x 108 rads in a period of 280 hours0.00324 days <br />0.0778 hours <br />4.62963e-4 weeks <br />1.0654e-4 months <br />.

Samples A4, 5 and 6 showed the most damage with the outer Permacel layer falling away for a space of three inches at the center of the splice.

Samples Al,.2, 3 and Bl, 2, 3 could not be handled without cracked outer layer of Bishop 820 falling off and exposing mica.

The only damage apparent to "C" and "D" samples were cuts apparently produced

~ by metal tags on D-4, 5 and 6.

It is unfortunate that treatments were not varied as planned; but, hopefully, we can separate the cable splices and process them 'in meaningful ways from here on.

There is surely a 'need to know how appearance correlates with electrical characteristics in both non-destructive and destructive tests.

There seems to be little doubt that the Scotch 870 tape is the best and it is apparently

adequate, having withstood aging and radiation.

I understand that you believe a Permacel glass tape (No. P ) has been shown superior and is proposed as an outer protective layer.

Although not so stated in your letter, I presume that all 18 samples have a layer of mica tape.

Please call me when you have had a chance to consider future steps.

/dw

~ Very trul

yours,

~

C. V. Fields Nuclear Services Department

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