ML17298B130

Final Part 21 & Deficiency Rept Re Failure of Itt/Barton Model 763 Transmitters to Meet Specs.Pps Setpoints Revised on Existing Transmitters & Barton Working on Physical Mod to Meet Specs

ML17298B130
Person / Time
Site:	Palo Verde
Issue date:	07/24/1984
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
REF-PT21-84-394-000 ANPP-30027-TDS, DER-84-08, DER-84-8, PT21-84-394, PT21-84-394-000, NUDOCS 8408090012
Download: ML17298B130 (8)

Text

4 Arizona Public Service'ompany July 24, 1984 ANPP-30027-TDS/SBEtQ:.',.~-.

V. S; Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division '.of Resident Reactor Prospects and Engineering Programs

Subject:

Final Report - DER 84&8 A 50.55(e) Reportable Condition Relating To ZTT/Barton Model 763 Transmitters Do Not Meet Specifications.

File: 8419-026; D.4.33.2 Reference. A) Telephone Conversation between R. Dodds and T. Bradish on February 29, 1984 B) ANPP-29083, dated March 16, 1984 (Xnterim Report)

C) ANPP-29972, dated July 16, 1984 (Time Extension)

Dear Sir:

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

Very truly y rs,

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E. E. Van Brunt, Jr.

APS Vice President Nuclear Production ANPP Prospect Director EEVB/TRB:db At tachment cc: See Page Two

~0 Mr. T. W. Bishop Dm 84-08 Page Two cc~ Richard DeYoung, Director Office of Inspection and. Enforcement U. S. Nuc1ear Regulatory Commission Washington, D. C. 20555 T. G. Woods, Jr.

D. B. Karner W, E. Ide D. B. Fasnacht A. C. Rogers L. A. Sonza D. E. Fowler T. D. Shriver C. N. Russo J. Vorees J. R. Bynum J. M. Allen J. A. Brand A. C. Gehr W. J. Stubblefield .

W. G. Bingham R. L. Patterson R. W. Welcher H. D. Foster D. R. Hawkfnson L. E. Vorderbrueggen R. P. Zimmerman S. R. Frost J. Self D. Canady T. J. B1oom Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339

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FINAL REPORT - MR 84%8 DEFICIENCY EVAIUATION 59.55(e)

ARIZONA PUBLIC SERVICE COMPANY (APS)

PVNGS UNITS 1, 2, 3 I. Mscri tion of Deflcienc Combustion Engineering (C-Z), has notified the Ar1zona Nuclear Power Profect (ANPP)'hat the elevated/suppressed range ITT Barton Model 763 pressure transmitters supplied by C-E have output errors of -2

.to -3X of their calibrated span. The applicable prospect tag numbers are.

1,2&3JRCEPT100X 1,2&3RCCPT101C 1,2&3S1APT333 1,2&3JRCEPT100Y 1,2&3RDCPT101D 1,2&3S1APT343 1, 2&3 JRCAPT101A 1,2&3SlBPT313 2&3RCAPT103 1,2&3JRCBPT101B 1,2&3SlBPT323 2&3RCBPT104 Per Combustioa Engineering Specif1cation 14273-ICE-0005 the output drift of these transmitters is not to exceed +1;OX of the calibrated span.

II. Anal sis of Safet Im lications .

The above listed transmitters have the following plant app11cations:

'1., Transmitters 1, 2 and 3 JRCEPT100X and 100Y provide pressur1zer pressure inputs to C-E control grade systems. These systems are not safety related, and'herefore a 3X error is not considered safety significant.

2. Transmitters PT313, 323, 333, and 343 are utilized d'or safety

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infection tank pressure indicatioa only, and, are not required for safe shutdown of the plant.

3. Transmitters PT103A, -101B, -101C and -101D provide inputs to the Plant Protection System (PPS). For these transmitters an a t ona . error could result in a non-coaservative HI pressurizer pressure/plant protective system setpoint. This error combined with other anticipated'rrors in the PPS may prevent a plant trip on high pressurizer pressure, and therefore result in a potential safety significant condit1on.

4. Transmitters 2 and 3 JRCAPT103 and 2 and 3 JRCBPT104 have previously been designated as unacceptable in DER 82-46. The transmitters are being replaced with Rosemount Model 1153 Series D transmitters. As a result, deficiencies with these instruments are no longer considered applicable to r=PVNGS.

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Mr. T..W. Bishop

&PP-30027 Page Two Based on the above, this condition is evaluated as reportable under

.the requirements of 50.55(e), since if the .condition were to remain uncorrected for item 3 it. would represent a significant safety condition.

.ITT Barton, the manufacturer of these transmitters,'has filed a 10CFR Part 21 report with the NRC as notification of this deficiency.

III. Corrective Action The transmitters in items 1 and 2 wQ3. be used as 'is.

1 C-E has evaluated the condition described in item 3 and has revised the PPS setpoints to account for the -3X instrument error. The revised setpoints are reflected in the C-E Final Setpoint Report, Bechtel Log Number N001-1.01%13. The change to the PVNGS setpoints precludes the potential safety hazard as 'the error is no longer considered outside the analyzed operating range. This analytical resolution enables the continued utilization of the existing-transmitters without any hardware alteration. In order to meet C-E's original specification requirements, of maximum +1.0X drift however, Barton is curren'tly working on a'physical modification to the'ransmitters. When this is completed the transmitters will either be replaced or refurbished and the PPS setpoints returned to their original values.

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