ML17296B027

Final Interim Deficiency Rept Re Potential Failure of Temp Detection Controllers Used on CTI-Nuclear Air Handling & Filtration Equipment.Mcgraw Edison Issued Recall Notice to Return Controllers for Repair or Replacement

ML17296B027
Person / Time
Site:	Palo Verde
Issue date:	10/23/1980
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Spencer G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, ANPP-16612-BSK, NUDOCS 8010290324
Download: ML17296B027 (8)

Text

'REGULATORY INFORMATION 'ISTRIBUTION'YSTEM (RI'DS)

ACCESSION NBR:801029032 DOC ~ DATE: 80/10/23 NOT IZED+ NO DOCKET.O~

FACIL:STN 50 528 Palo Ver de Nuclear Stationi Unit 1i Arizona Publ i 05000528 STN 50me529 BYNAME Palo Ver de Nuclear Stationi Unit 2i=- Arizona Publ i 05000529 AUTH AUTHOR AFF'ILKATION VAN BRUNTFE,E, Arizona Public Service Co..

RECIP ~ NAME'ECIPIENT'FFILIATION SPENCERFG ~ ST Region 5i San Franciscoi Reactor Construction 8 Engineer

SUBJECT:

Final interim deficfency rept re potential failure of temp detection controllers used on CTI Nuclear air handling II filtration equipments McGraw Edison issued recall notice to return controllers for repair or replacement; DISTRIBUTION CODE'. B019S COPIES RECEIVED; LiTR TITLE: Construction Deficiency Report (10CFR50

~

~

ENCL>>

55E0

~ SIZE i NOTES:Standardized Pla'nt; 05000528 Standardized Plant ~ 05000529 RECIPIENT> COPIES RECIP.IENT ID CODE/NAME LITTR ENCL ID CODE/NAME LTTR ENCLl ACTION: A/D LICENSNG 00 1 MIRAGLI A e F e, 05 1 LEEiJ ~ Ob 1 1 KERRIGANgJ,. 07 1 INTERNAL! AD/RC I'/IE 17 1 AEOD 18 1 1 ASLBP/J ~ HARD 1 1 D/DIR HUM FAC15 1 1 EDO II STAFFS 19 1 EQUIP QUAL~ BR11. 1 1 HYD/GEO BR 22 1 1 ILE" 09 1 1 LIC QUALI BR 12 1 1 RUTHERFORDeNBIE'OPIES MPA 20 1 1 NRC PDR 02 1 1 OELD 21 1 1 PROCJ EV 13 1 1 QA BR 10 1 1 01 1 1 1 1 I DRDS,V 21 1. 1 EXTERNAL'. ACRS 16 16 16 LPDR 03 1 1 NSI C'f 08 1 1 30 198 TOTAL NUMBER OF COPIES REQUIREDe LTTR 39 ENCL'9

fl a

0 1 l e

lf, q,

p,@la IPwcsa P. O.

aa ~na BOX 21666 momma

'HOENIXp ARIZONA B5036 October 23, 1980 ANPP-16612-BSK/JAR U. S. Nuclear Regulatory Commission Region V Walnut Creek Plaza Suite 202 1990 North California Boulevard Walnut Creek, California 94596 Attention: Mr. G. S. Spencer, Chief Reactor Construction and Engineering Support Branch

Subject:

A 50.55(e) Reportable Condition Relating to Potential Failure of Temperature Detection Controllers Used on CTI-Nuclear Air Handling and Filtration Equipment Final Report File: 80-019-026

Reference:

(1) Telephone Conversation between J. Eckhardt. and S. Kaplan on September 16, 1980 (DER 80-28)

Dear Sir:

Attached is our final written report of the reportable deficiency, under 10CFR50.55(e), referenced above.

Very truly yours, C C.. CC<l E. E. Van Brunt, Jr.

APS Vice President Nuclear Projects ANPP Project Director EEVBJrIJ'BSK:skc Attachment II 0XOSItogg

U. S. Nuclear Regulatory Commission Attention: Nr. G. S. Spencer, Chief ANPP-16612-BSK/JAR October 23, 1980 Page 2 cc: QU c or Stello, Jr., Director Office ofMnspe'colon and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 A. C. Gehr Snell & Wilmer R. L. Robb D. B. Fasnacht W. E. Ide A. C. Rogers J. H. Allen J. A. Brand W. H. Wilson W. G. Bingham W. J. Stubblefield J. E. Bashore R. W. Welcher D. R. Hawkinson

FINAL REPORT REPORTABLE DEFICIENCY 50.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNITS //1 AND //2 I. Descri tion of Deficienc CTI-Nuclear, a Division of McDowell-Hellman Company was advised by their supplier, Edison Electronics Division of McGraw Edison, that an electronic component similar to that supplied to CTX-Nuclear has failed in service. The compo-nent is an integral part of an electronic controller for detecting high temperatures in the airstream of various filtration systems., These controllers are used on CTI-

'Nuclear Part Numbers D-31555, D-31556, D-31557 and D-32063 which have been delivered to the PVNGS jobsite for safety-related and non-safety-related applications.

McGraw Edison attributes this only known failure to the use of acid flux in sealing some of the controls during manu-facture. The acid flux could cause corrosion in the con-troller and result in failure.

II. Anal sis of Safet Im lications If not detected and corrected, 'the controller, could give erroneous indications such as, (1)'failing to open and not closing at an alarm point, (2) failing closed and giving a false alarm, or (3) failing at some intermediate step and functioning inaccurately.

This condition is considered to be a reportable deficiency since if not detected and corrected, the failure mode could possibly represent a safety significant condition.

III, '"Corrective Action McGraw Edison issued a recall notice to their customers to return controllers for repair or replacement.

Bechtel issued Design Change Packages (DCP's ICM-HJ-003, 2CM-HJ-003, and 1CM-HF-002) on July 3, 1980 to remove suspect controllers from the jobsite and return to the supplier. The DCP's also provided for the installation of repaired or re-placed controllers.

CTI-Nuclear submitted a 10CFR Part 21 notification to the NRC on April 30, 1980 advising them of the potential problem.

(I f