ML20093N435
| ML20093N435 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/18/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-29987-TDS, DER-82-37, NUDOCS 8408010346 | |
| Download: ML20093N435 (12) | |
Text
.
11ECEIVED HRC Arizona Public Service Company 13 fl 23 F12 28 July 18, 1984 ftEGl%{ VI?.F ANPP-29987-TDS/TRB U. S. Nuclear Regulatory Comeinsion Region V Creeknide Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programa
Subject:
Final Report, Revision 1 - DER 82-37 A 50.55(e) Reportable Condition Relating To Class 1E Wiring Terminations Crimped With Less Pressure Than Specified, Due To Iack Of Maintenance Program And Traceability For AMP Hydraulic Crimp Tools.
File: 84-019-026; D.4.33.2
Reference:
A) Telephone Conversation between T. Bishop an.1 G. Duckworth on July 13, 1982 B) ANPP-21591, dated August 10, 1982 (Interim Report)
C) ANPP-22139, dated October 28, 1982 (Time Extension)
D) ANPP-22278, dated November 15,1982 (Final Report)
Dear Sir:
Encioned is revision one of the subject Deficiency Evaluation Report under the requirements of ICCFR50.55(e). This revision restates the Corrective Action taken for this condition.
f Very truly youra, q
t.C Ch m% 4 E. E. Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director EFVB/TRB:db At tachment ec: See Page Two 8408010346 840718 i
PDR ADOCK 05000528 S
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.Mr. T. W. Bishop DER 82-37 Page Two cc:
Richard DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.
D. B. Karner W. E. Ide D. B. Fasnacht A. C. Rogers L. A. Souza D. E. Fowler T. D. Shriver C. N. Russo J. Voreen
- 1. R. Bynum J. M. Allen J. A. Brand A. C. Gehr W. J. Stubblefield W. G. Bingham R. L. Pa tterson R. W. Welcher H. D. Foster D. R. Hawkinson L. E. Vorderbrueggen R. P. Zimmerman S. R. Frost J. Self D. Canady T. J. Bloom Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339
y 4
FINAL REPORT - REVISION 1 - DER 82-37 DEFICIENCY EVALUATION 50.55(e)
ARIZ0MA PUBLIC SERVICE COMPANY-(APS)
PVNGS UNITS 1, 2, 3 1
I.
Description of-Deficiency As requested by an.NRC inquiry, the operating pressure to hydraulic crimping tools used for electrical terminations were checked in accordance with the vendor'a instructions.
MP Hydraulic Puep Crimping Tools catalog no. 69120 were found to be operating at 4500 psi which in less than 8000 pai as specified by AMP in their Customer Manual CM1950. This condition was considered questionable because of the uncertainty as to whether the electrical terminations were adequately crimped to annure safety related functions.
No program has been initiated to assure correct tool usage, assure periodic maintenance for these hydraulic crisp units (22), or provide traceability of specific tool applications used in conjuction with the log termination on wire sizes 2/0 through 750 MCM.
AMP Special Industrien han reviewed this condition and han conducted conclusive testing (see attachments A, B, C & D) on samples taken from the ANPP jobsite.
Sample wire sizes 2/0, 4/0, 250 MCM, 350 MCM i
and 700 MCM were terminated by Bechtel site people at (1) 4500 psi and (2) 3200 pai and forwarded to vendor for tensile strength tents. The vendor also performed Mil-volt drop testing on additional wire samples of the same sizes but which were terminated by the vendor at 4500 pai and 8200 psi crisp pressures.
The results of the tennile strength tents (nummarized in Table I attached) demonstrates that ANPP samples crimped at 4500 psi well exceeded UL-486A and Military specification MIL-T-7928G requirements.
The Mil-volt drop tests show that little volt drop difference occurs when injecting amperes through termination luga crimped at pressures ranging from 8200 - 4500 psi. The results of these tests are summarized in Table II attached.
Although the tents were not performed at ampere loads provided in the MIL-T 7928G Stendard the corresponding voltage dropa for the maximum allowed wire ampacity figures, per Project Design Calteria (slightly higher than the tested values) are not expected to exceed the Maximum allowed by the MIL-T 7928G Standard. It is therefore concluded that the wire misen 2/0 - 750 MCM that were crimped with lugs by AMP Tool crimp. pressures of 4500 - 8200 psi are adequate for the intended purpose.
Mr. T. W. Bishop ANPP-29987 Page Two II.
Analysis of Safety Implications This condition as described in Section I does not present a safety significant condition. However, it is evaluated as reportable under the requirements of 10CFR50.55(e) because this condition represents a breakdown in the Quality Assurance Program. The lack of surveillance to ensure compliance with established vendor requirements for proper crimping in accordance with the electrical specification (13-EM-306) is conaidered an extensive deviation an defined by the regulation.
III. Corrective Action Werk Plant Procedure / Quality Coatrol Instruction 255.0 has been revised to require that a maintenance and check program for the hydraulic crisp units be implemented. This procedure is applicable to Units 1, 2, and 3.
Each Hydraulic Crisp Unit shall be serialized to allow traceability of tool application, to ensure that terminations are performed at specified crimping pressures and that correct dies have been utilized in accordance with the vendor's instruction an outlined in their Customer Manual CM1950 and telex dated 3/19/84 (attach Jent D).
All future lug terminations for the subject wire sizes shall therefore be crimped at a minimum of 7900 pai. The serial no. will he included on each applicable EE-580 card.
The referenced NCR will be dispositioned ust -as-is siner, the terminations already completed are adequate.
l
DER 82-37 TABLE I Test L*L-46BA MIL-T-7928G Wire Side Tensile Strength Tensile Strength Tensile Strength Founds Founds (Min)
Founds (min) 2/0 943 300 750 4/0 2243 450 875 250MO!
1859 500 1000 350Mei 1E19 600 1125 500M:'M 2821 800 1500 i
700Mei 4939 1000 2000 Err.arizati:n of Tens 11 Strength Test Results on Vire Sa ples Ternined by Eechtel Cri= ping Tonis at 4500 psi - See Attachment A 9
TADIE II ConeluctorAllowableli l
Ampacity (project Tent current Desir,n Criterin) liy Amp Correnpontliar, max. Hil-M ll,-7-7928G (Ampn)
Ilrop__Re nul ts voit Wtre Size (Amps)
At 8200 psi At 4500 psi
' Test Current Mil-volt Drop (Apps)
(Max.)
2/0 182 150 1.4/
l.44 283 4
4/0 249 225 2.36 2.12 380 6
250McM 281 250 2.63 2.54 540 6
l 300MCM 343 300 2.99 2.96 670 6
500MCM 427 400 2.50 2.34 860 6
700MO4 517 500 2.74 2.58 1190 6
h Summarization of Mil-volt Drop Tent Henults on Bechtel Wire Sample r, termlunt eil ley Vendor g
Crlmp inp, tools at (1) 4500 psi anil (2) H200 pai 3
(See Al taclimcot II) 4 1
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A-rrAcecur A DER 82-37
'* 4 A M P SPECIAL c aut or y
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July'20,'1982 V
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@gg Palo Verde fJaclear Generating Station P.O. Box 49 Phoenix, Arizona 85343 Attentice:
Mr. Bill Saylor
Dear Mr. Saylor,
The sa ple wire that you submitted to my atter. tion and the ter' ** *ons the site have been tesfed in ra nrde. r' Tc..s.11e.
The d the tpt vou -ace ontere: nations and termir.als icentified by wire markers, the resort an being sub-itted to your attention.
sa-ples are; We c.rt: ; ed o. your wi re We are taking the testing one (I) step further:4500 P.S.I. ord the I am sub.ittie:
on one end at these sa ples, a total of twelve (12), tye each of:
fo _
and 750 t*tM to our Environa. ental Test I.ab in Harrisbars, r a.-e Ava'ie e
l I placed an urseecy on this re-dst a.d as socr. as,
- aoie n receive the results, I will call you prior to forwarding the recorts.
Mi!.-Vr
I would like to cention, ene (1) of your samples, 500 MCM tras crimped in I
Another sample. 750 MCM was crimped with the wror.g die, 4500 P.S.I. uell exceeded t e U' h
reverse position.
In all c ses vet.14.s rJived atui th the exceot ion _of_oneli J salpre:
2/0,86, 800 MCM.
The redsction in Tensile was contributed to the wire nc,t and Militers
. ar i_f i cat i ca e It just So, actually, F6 could be ignored.
arc ed 0 pounds.
being inserted to its fullest.goes to show you how important it is to h terminal barrel.
If you have any further questions in regards to this report, picase do no hesitate to contact me.
- Regerds, AMP PEClAl. INDUSTRIES y g(. idL)N"'%
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AMP ATT^csseur o m 82-n i SPECIAL
. cant i d 2) s INDUSTRIES ww For pe. Prve 19482 1215:647 1000 August 17, 1982 Bechtel Power Corporatica P.O. Boy 49 Palo Verde, Arizona 85343 4
Attention: B'll Saylor Subj ect : Millivolt Drop on Cable Terminations: 2/0, 4/0, 250, 350, 500 s 700 Terminated at:
8200 P.S.I. & 4500 P.S.I.
~
Dear Bill,
The tests conducted at AMP Environmental Lab, Harrisburg, Pennsylvania, are attached.
As mentioned in the subject of this memo, we ter-inated six (6) cable sizes supplied by you with the Hydraulic Unit set at 2200 P.S.I. and the same amount of samples terni,ated at 4500.P.S.I.
As you will notice by the report, there was little difference between the two (2). The test currents used are those defined in the MIL-T-7928G Specification. This report along with the Tensile data previously submitted to you, I hope will be o' great val Je.
There is no charge for these two (2) test reports.
I am sorry for any inconvenience you have encountered and hope we can main-tain a good customer / vendor relationship and continue to supply you with high quality products.
Should you have any coments or questions regarding these test reports, please contact me at your convenience.
- Regards, AMPSpicA1.INDUTRIES
. {f h
Y Ted Updegra te,
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Manager, qu 11ty A)sulance
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B. Eister L. Pendergast E. Reichert G. Richards Q. A. Retention File l
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ATTACHMENT C
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a BECHTEL PLVR BECitTEL PLVR A* PROD B 3ERN-3/4/33 a
AT,7N: 'J. F. STUSSLEFIELD/D. S333ER F.E F: 69120 ELECTRIC MYDRAULIC CRIMPIN3 UNIT U?cN I*'AL"ATI 2N SY AMP 9,f,$=A*ILI C EN11NEERS, THE F3LL3*JIN3 1:372 FleAT-I.*N */AS C3MPILED A:JD PASSED 2N T3 (3U T3 SMZi 3R DISC *JSS *J/YB Qua3 L-IT/ I:J133 PE R S 3:JN EL. THE MAIN PURP35E OF HAVINd THE 69120 UNIT SET
'J/ PEA'4 XI CX-3FF PRESSURE OF B 000- 3 200 P. S. I.
IS T3 MA1DLE THE LAR-3EST CAS: E ?.EC2.1 MENDED BY YR U:JIT: 2NE MILLI 3N.MCM CA3LE.
IT 'JAS F33:JD THAT THE U;JI T SET AT 7 300 P. S. I.
DELI *8ERS A F3 ROE 37 l
t 50,630 LES. VE XN27 7/A*'AILAPLE DATA TdAT 41,500 LES IS REQUIRED
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73 MA4E A 7 50MCM CRIMP TdAT VILL MEET ALL SPECIFICATIONS IN RE1ARDS 72 TENSILE, MILIV3LT, V25 EAT 13N, ETC. S3, THE DIFFEP.ENCES EETJEEN 41,500 TB 50,600 LBS lIVIS Y3U A 22 PERCENT SAFETY FACTOR AT 7300 P.S.I.,
CRIM?IN3 7 5 0M *:M. BUT, MIEP IN MIND, A7.*ANY' TIME Y2U FIND YR LNIY BELO'l tie SPECIFICD P.=. ESSURE 37 3000-9200, RESET YR 'JNI T T3 TdESE PRESSURES. 53 IN ESSENCE, ? HAT I AM SAYING IS IF Y3U HAVE MADE l
ANY CRIM?S AT 7S00 2N 750MCM Y3U
- JILL HAVE N3 PR3ELEMS.
543ULD Y3U NEED ADDITI3:JAL INFO., PLS C3NTACT THIS 3FC.
ED*1 ARD */. UPDE3 RAVE Mih, C'!ALITY ASSURANCE A*1P SPECIAL INDUSTRIES BER'JYN, PA.
TELEX: 345405 A1PR3D B 3ERN BiC1TEL FLVR e
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REF COST 0i1ER MA'IUALS 1950 A 1930 ZN THE MYDRAULIC FOOT P'J:(P & TdE ELECTRICAL XYJRAULIC, TME P3 ESSURE IS FACT 987 SST V/A }i!N. 3F 3000 PSI T3 A21AX. 3F 4400 PSI.
VE D3T4 KNOV T3AT :1YDRAULIC PRESSURES FLUOTUATE WDIFFSMS!JT :1AT'LS U4DSR CSMPRESSION, L3SS 2F WILs DIFFERENT LENGTdS 3F '40SES, fi SetALL 4 LAR'IE CYLINDRICAL 3EADS. T:415 IS TaE REASON F3R T45 SD00 T3 M00 SDRIAD. TdE '/ NITS ARE TCSTED AT 13,000 PSI AS A SAFETf FACT 93 1:1 T45 FACT 3RYs BUT TdR2U' lit EXTSNSIVE TESTIN3, VE AT AMP K10'-l TMAT 300 P91 IS ALL T: FAT IS REQ' O F3R Oi/E MILLISM CMA CRIMP 3.
IF T33 UNIT FLUCT-GATS 3 T3 7900 T3 3500 PSIs' Td?RE IS N3 RAVI 33?Jit & THE END CRI;1P VILL MEET T:iS SPEC 3. KEEP.1:1 i,11ND, THE PIST3:4 33TTOMS I:JSI E T.{T MIAD 31VINT Y'sU IAC3 & EVh.RY TI.43 TAE SAME CRIMP DIE J I*f EtJ S I O N.
IN ORDSR T' CALIBRATE ?!!? ' !!T TelERS ARE TVS (2) ~4AYS OF ACC3HP-LIS;f! H TdI5 FCAT:
1 IN ALL CASES, T.iS E'O AF 7 t? H3SC MUST EIT3ER '4A7E TdS MSAD 94 TdE EN3 SF Tds 335E a A 'I A1s USED GV TME f> NIT 9R, 2.
REia !E TdE DEAD 4 ?bACE T.f 31N3E 3N T'(E END 3F TdE 40SE.
C3RRECTION: MIDDLE 3F PA?.A, SM9ULD RD:
30T T'4R0013.E4TE.4SI:/E TESTIN1e VE AT AMP dial T1AT 3000 TO S400 PSI IS ALL TH AT !& REQ' O...
IF YO'J 4A'JE ANY QUESTI A:JSs PLS CONTACT MY OFC.
TED UPDE'IRAVI AtP SPECIAL INDUSTRIES BER'i(Ns PA A'1 PROD 4-tC
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