ML20205P777
| ML20205P777 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 03/19/1987 |
| From: | Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| REF-PT21-87, REF-PT21-87-078-000 023-02127-JGH-D, 23-2127-JGH-D, DER-82-46, PT21-87-078-000, PT21-87-78, NUDOCS 8704030371 | |
| Download: ML20205P777 (14) | |
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.u j' i Arizona Nuclear Power Project ,
P O. SOX $2034 e PHOENIX. ARIZON A 85072-2034 p' >
March 19, 1987~
, +< 023-02127-JGH/UhLl 1 I,
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- U. S. Nuclear Regulatory Commission .%
Region V 1450 Maria Lane - Suite 210 '. '
Walnut C'etk. California 94596-5368 , i \ f. , ,
?, i Attention: If r. D. F. Kirsch, Director i s-s Division of Reactor Safety and Projecty'\ '
Palo Verde Nuclear Generating Station (PG'GS)
Units 1, 2, 3 r Docket Nos. 50-528, 529, 530
(
Subject:
Final Report - DER 82-46, Revision 3 -'
A 50.55(e) and 10CFR21 Rpportable Ccadition Relating to ITT Barton Pressure Transmitters Supplied by CE do not Itr.et
' t Overpressure Requirements File: 87-006-216 i I 5
Reference:
(A) ANPP-29072, dated March 15,1984 (DER 82-46 F nal Re ort) ,1,' (
(B) ANPP-29099, dated March 19,1984 (DER 82-46 Final Report, ',
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Rev. 1) < ,1 3 (C) ANPP-33762, dated Octohr 21, 1985 (DER 82-46 Finql Report, l Rev. 2)
Dear Sir:
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r r Attached, is revision three (3) to our final written report of the Reportable Deficiency under 10CFR50.55(e) referenced above. The 10CFR21 evaluation (s also included. This revision updates and further clarifies information which ANPP fects is of a substantive nature. '
b Very truly yours, l 'fy
.g 40hh f5 PDR 28 J. G. Haynen Vice President
, Nucicar Production JGH/DRL:kp Attachments b cc: See Page 2 9159Q/1668Q ,
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DER 82-46 -' Fihal Report, Rev. 3
- ,1- . Mrq D. F. Kirsdh '
Director Page Two March'19, 1987 023-02127-JGH/DRL i.
-h cc: 'J. M. Tay167 Office of Inspection and Enforcement
-U. ' S.' Nuclear Regulatory Commission v_ .
Washington, D. C. 20555 A g s A. C. Gehr (4141)
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R. P. Zimmerman (6295)
Records Center i Institute of Nuclear Power Operations 1100 Circle 75 Parkway - Suite 1500
. Atlanta, Ceorgia 30339 i t.
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O' FINAL REPORT - DER 82-46, REVISION 3 DEFICIENCY EVALUATION 50.55(e)
ARIZONA NUCLEAR PCWER PROJECT (ANPP) l PVNGS UNITS 1, 2, 3 :
-I. Description of Deficiency A. Incorrect Overpressure Range (Model 763)
Following an in situ verification conducted in April, 1982, of the
. correct-pressure and range rating of all' installed transmitters, Combustion Engineering (C-E) identified six (6) ITT Barton Model 763 transmitters that had incorrect overpressure range.
l The affected transmitters, two (2) per unit, are installed 'on the l pressurizer and are identified by Tag No. RC-PT-103 and 104. The i required range of overpressure protection is 0 to 3125 psia.
l Contrary to this, the Unit 1 transmitters were supplied with an j overpressure range of 0 to 1000 psig and Unit.2 and 3 devices were j
supplied with a 0 to 2485 psig overpressure range.
l B. Thermal Non-Repeatability (Model 763 and 764) i ITT Barton on October 29, 1982, filed.a 10CFR Part 21 report concerning the Model 763 and 764 electronic transmitters. 1he defect exhibits itself in the form of thermal non-repeatability at nominal . 9
- containment ambient temperatures and results in performance outside Barton's specifications.
3 The thermal non-repeatability problem involves instruments that
- s. monitor the reactor coolant system, the steam generator and the safety injection system.
. C. Output Errors in Factory Calibrated Span (Model 763)
This condition is discussed separately in DER 84-08.
1 D. Initial Negative Offset (Model 763) l On February 7,1984, Barton filed a third 10CFR21 notification of. !
- - defect with the NRC. The defect was in Model 763 zero based transmitters which are continuously operated above 80% of factory 1
calibrated span. This defect exhibits itself as an initial negative offset that may cause the transmitter to exceed the Barton long tera drift specification. The magnitude of this error was defined by Barton to be -0.6% of spaa per year.
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a Evaluation -
. A. Incorrect Overpressure Range-ne affected transmitters provide indication t'o the~ operator for manual actions and are also used to generate'a permissive signal to allow alignment of~the shutdown' cooling system. Alternate indications are provided to the operator by diverse transmitters-
.which are Rosemount Model 1153, Series D, transmitter tag no.
RC-PT-105 and 106.
C-E's evaluation of this conditiSn. concluded that in the event the
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-1 affected transmitter fails low, the. diverse transmitter would prevent 4 improper-entry into the. shutdown cooling moda.. If the affected transmitters fail high, temporary bypass of the interlock would be required to enter the shutdown cooling mode.
.Due to the fact that one of the postulated failure modes would require operator intervention, this deficiency becomes unacceptable and must be corrected. '
1 1
1 R e' root cause of this condition is attributed to ITT Barton's ;
failure'to comply with C-E. Purchase Order 9072079 requirements'. He >
t six (6) transmitters. shipped to PVNGS under the aforementioned-
- purchase order were not in compliance with the required over. pressure ;
1 specification. ,)
i
- B. Hermal Non-Repeatability Barton has identified two causes for the thermal non-repeatability problem. h ey are as follows
- 1. Equipment defect An equipment defect has been identified that creates a leakage current path between the zero and span adjustment potentiometers and the case ground of the instrument. - This current leakage becomes significant at high temperatures (above 280*F). ITT
,- Barton has. attributed this condition to existing metallic.
!~ ' washers which provide the leakage path.
- 2. Methodology error during factory transmitter calibration
.According to ITT Barton, this problem occurred during the temperature compensation portion of the transmitter
, calibration. This methodology error resulted in an additional
- 0.25 to 0.5% zero shift error over a temperature range of 80*F to 130*F, with proportionately higher errors at high
- temperatures. ITT-Barton has attributed this condition to
- incorrect value of Balco resistors installed for temperature compensation.
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Attachment A is a detailed listing by serial number and tag number of ITT Barton Model 763 and 764 transmitters affccted by this condition. There are a total number of 29 Model 763 and 31 Model 764 transmitters per unit.
C. Output errors in factory calibrated span This condition is discussed separately in DER 84-08.
D. Initial Negative Offset ANPP utilizes nineteen (19) zero based 763 Barton transmitters per Unit, however, none of these-transmitters are affected by this defect.
Thirteen (13) of these transmitters operate below the 83% of span breakpoint, two (2) transmitters, PT-103/104, operate at 300% of span, but since these are special suppressed-range transmitters, Barton has stated that these are not affected by this defect, and the remaining four (4) transmitters, SI-311, 321, 331, and 341 provide indication only of safety injection tank pressure. Attachment (B) is a detailed listing of affected transmitter tag numbers, transmitte'r range, normal operating pressure, design pressure, upper normal operating pressure and percentage of upper normal operating pressure to the Barton calibrated range.'
The root cause of this condition is attributed to an original factory .3 calibration procedure used by ITT Barton prior to shipment.
II. Analysis of Safety Implications A. The original Model 763 transmitters did not meet the overpressure range requirements for monitoring the pressurizer pressure. The possibility of failure due to over pressurization would affect their monitoring / alarm function.
B. The generic thermal non-re eatability problem associated with the model 763 and 764 ITT Barton tran.mitters may introduce unanalyzed inaccuracies or errors to the monitoring / alarm function of the safety-related systems.
1 C. The safety implications of " output errors in factory calibrated span I (model 763)" is discussed separately in DER 84-08.
D. The defect associated with the Model 763 transmitter that is manifested l as initial negative offset is evaluated as Not Reportable under 10CFR50.55(e) since if it were to remain uncorrected, it would not represent a significant safety condition.
The conditions in II A, B, and C are evaluated by the PVNGS project as Reportable under the requirements of 10CFR50.55(e) since if these conditions were to remain uncorrected, they could constitute a significant safety condition.
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The project has evaluated the condition dercribed in (A) as Reportable under the requirements of 10CFR21 since,11 lef t uncorrected, it could adversely affect the operator's ability to safely shutdown the plant.
(The supplier, ITT Barton, has previously filed a_10CFR Part 21_ report on the conditions described in B, C, and D above.). Please also refer to DER 84-08.
III. Corrective Action A. The corrective actions for the incorrect overpressure range problems are as follows:
la. For Unit 1, the two Barton Model 763 pressure transmitters, tag no. RC-PT-103 and 104 were removed and replaced prior to fuel load by_ qualified Rosemount Model 1153, series D, pressure transmitters that met both the restricted range and overpressure range criteria. This work was done by DCP 1SJ-RC-105.
Replacement of the ITT Barton transmitters with the Rosemount transmitters resulted in all four pressurizer pressure transmitters, PT-103, 104, 105, and 106 being of the same manufacturer (Rosemount). The project obtained, from the NRC, a temporary exemption for the diversity of pressure sensing interlocks on redundant shutdown cooling system isolation valves.
Ib. PVNGS SAR Change Notice No.1137 was issued revising section 1.9.2.4 to identify a deviation from the diversity requirement design basis contained in CESSAR-F Section 7.6.1.2.1.g. The SAR change was incorporated in Amendment 13 prior to fuel load for Unit 1.
Ic. C-E has revised drawings and documentation applicable to the replacement of ITT Barton Model 763 transmitters with Rosemount Model 1153, series D, for unit 1 PT-103 and PT-104.
l Id. Prior to Cycle 2, modified Barton Model 763 transmitters PT-103 and 104 will be installed in Unit 1, to replace the Rosemount l Model 1153, series D, transmitters currently installed.
- 2. The transmitters, PT-103 and 104, that were removed from Unit 1 were modified per CFR 14373-110 and 109, respectively, to meet the overpressure range requirements and were installed in Unit 2 prior to fuel load. Hence, Unit 2 does not require a deviation from the diversity requirement.,
- 3. Unit 3 does not require a deviation from diversity requirements. PT-103 and PT-104 are ITT Barton Model 763 transmitters which were modified per BSN 16953 to meet the overpressure range requirement.
Note: Rosemount 1153 Series D transmitters are provided in instrument channels PT-105 and 106 for all 3 units at PVNGS.
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d B. The corrective actions for the Thermal non-repeatability problem as l determined by Barton were as follows:
- 1. ' Replace the metallic washer.with:a fiber washer to correct the
_ leakage path problem.
- 2. Change.the Balco resistor values inside the transmitter to fix i the methodology error.
'ITT Barton provided C-E with a listing of all transmitters .
- supplied to ANPP Units 1, 2, and 3 that were affected by this j deficiency. From this list it was determined which transmitters had to have washer.changeouts and/or resistor changes implemented. The necessary modifications have been completed in all three units.
- 3. Verification that all ITT Barton Transmitters in the warehouse have had the required modifications performed will be completed 3/30/87.
- -C. The Corrective Action for " output errors in calibrated span" is' j@
l delineated in DER 84-08:
1 D. Initial negative offset error. The magnitude of this error was defined by Barton to be -0.6% of span per-year. 'Barton indicated
] that this error is applicable to transmitters operating above 80% of l factory calibrated span. ANPP utilizes nineteen (19) zero. based 763 Barton transmitters per unit. Thirteen;(13) of these transmitters ,
operate-below the 80% of span breakpoint, two (2) of the 19
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transmitters, PT-103/104, operate at 300% of span'but Barton has ,
i stated that these special design suppressed-range transmitters are not affected by this 10CFR21 defect. .The remaining four (4) transmitters operate ut 83% of span, but are indication only devices and do not provide plant protection system input. An additional-
-0.6% error has no impact upon their safety function or upon nuclear 4
plant sofety.- Hence, no corrective action is; required for these transmitters. ,
IV. Attachments Attachment (A) - ITT Barton 10CFR21 Washer / Resistor Defect Attachment (B) - ITT Barton 10CFR21 Zero Based 763 Transmitter Defect 4
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DER 82-46 Page 3 of 6 Attachment A ANPP Unit #2 ITT Barton 10CFR21 Washer / Resistor Defect Note: Attachment A lists transmitters for the serial number, tag number and .
model number according to Barton quality records and is not intended to define the current installed location of any C-E supplied transmitters.
MODEL-763 Method of Tag-Number Serial-Number Fixed At Resolution Remarks PT-100X 1234 ANPP Site DCP 2SM-RC-118 PT-100Y 1235 ANPP Site DCP 2SM-RC-118 PT-101A 1236 ANPP Site DCP 2SM-RC-118 PT-101B 1237 ITT Barton CFR 215 PT-101C 1238 ANPP Site DCP 2SM-RC-118 PT-101D 1239 ANPP Site DCP 2SM-RC-118 PT-102A 1240 ANPP Site DCP 2SM-RC-118 PT-102B 1241 ANPP Site DCP 2SM-RC-118 PT-102C 1242 ANPP Site DCP 2SM-RC-118 PT-102D 1243 ANPP Site DCP 2SM-RC-118 PT-103 1244 ITT Barton CFR 14373-110 PT-104 1245 ITT Barton CFR 14373-109 PT-311 1259 ANPP Site DCP 2SM-RC-118 23 PT-321 1260 ANPP Site DCP 2SM-RC-118 PT-331 1261 ANPP Site DCP 2SM-RC-118 PT-341 1262 ANPP Site DCP 2SM-RC-118 PT-313 1246 ANPP Site DCP 2SM-RC-118 PT-323 1247 ITT Barton CFR 14373-81 PT-333 1248 ITT Barton P.O. 9172273 Sup. 8 *See note below PT-343 1249 ANPP Site ' DCP 2SM-RC-118 PT-1013A 1250 ANPP Site DCP 2SM-RC-118 PT-1013B 1251 ANEP Site DCP 2SM-RC-118 PT-1013C 1252 ANPP Site DCP 2SM-RC-118 PT-1013D 1253 ITT Barton CFR 258 & 334 PT-1023A 1254 ANPP Site DCP 2SM-RC-118 PT-1023B 1255 ANPP Site DCP 2SM-RC-118 PT-1023C 1256 ANPP Site DCP 2SM-RC-118 PT-1023D 1257 ANPP Site DCP 2SM-RC-118 PT-268 1258 ANPP Site DCP 2SM-RC-118
- Note: Barton 763 Transmitter S/N 1275 currently ' installed. This.
transmitter has been repaired at ITT Barton to correct the washer / resistor defect via BSN 15381.
DER 82-46 Page 4 of 6 Attachment A ANPP Unit #2 ITT Barton 10CFR21 Washer / Resistor Defect Note: Attachment A lists transmitters for the serial number, tag number and model number according to Barton quality records. and is not intended to define the current installed location of any C-E supplied transmitters.
MODEL 764 Method'of-Tag-Number Serial Number Fixed At Resolution Remarks LT-110X 1899 ANPP Site DCP 2SM-RC-118 LT-110Y 1900 ITT Barton MRR 169173 LT-311 1901 ITT Barton CFR 265 & 334 LT-321 1902 ITT Barton BSN 14614 LT-331 1903 ITT Barton BSN 14966 LT-341 1904 ITT Barton BSN 14966 LT-1113A 1909 ITT Barton CFR 14373-119 LT-1113B 1910 ANPP Site DCP 2SM-RC-118 LT-1113C 1911 ANPP Site DCP 2SM-RC-118 LT-1113D 1912 ANPP Site DCP ISM-RC-106 LT-1123A 1913 ITT Barton 15Gt 169173.
LT-1123B 1914 ITT Barton MRR 169173 LT-1123C 1915 ITT Barton }50t 165173 j?
LT-1123D 1916 ANPP Site MRR 165173 LT-1114A 1917 ANPP Site DCP 1SM-RC-106 LT-1114B 1918 ANPP Site SWA 23320 LT-1114C 1919 ANPP Site DCP ISM-RC-106 LT-1114D. 1920 ITT Barton MRR 169173 LT-1124A 1921 ITT Barton 1 Hut 196173 LT-1124B 1922 ITT Barton CFR 190 LT-1124C 1923 ANPP Site DCP 2SM-RC-118 LT-1124D 1924 ANPP Site DCP ISM-RC-106 PDT-115A 1925 ITT Barton tHut 165940 PDT-115B 1926 ITT Barton MRR.165940-PDT-115C 1927 ITT Barton ISUt 165940 PDT-115D 1928 ITT Barton MRR 165940 PDT-125A 1929 ITT Barton }Dut 165940
- PDT-125B 1930 ITT Barton MRR 165940 PDT-125C 1931 ITT Barton 150t 165940.
PDT-125D 1932 ITT Barton MRR 165940 LT-268 2856 ITT Barton Not Applicable Bought after ,
fix -
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DER 82-46 Page 5 ofl6
_ Attachment A 2ANPP. Unit #3 ITT Barton .10CFR21 Washer / Resistor Defect Note: Attachment A lists transmitters for the serial number, Ltag number and ,
model number according ;to Barton quality records and is .not intended to define.the current installed location of any C-E' supplied transmitters.
MODEL 763 Method of Tag' Number Serial Number Fixed At- Resolution ' Remarks PT-100X 1263 ITT'Barton BSN 15381 -
PT-100Y 1264 ITT Barton BSN 15381 PT-101A 1265 ITT Barton BSN 15381- ,
PT-101B 1266 ITT Barton~ MRR 208127 PT-101C 1267 < ITT Barton MRR 208127 PT-101D 1268 ITT Barton BSN 15646 PT-102A- 1269 ITT Barton BSN 14613 PT-102B 1270 ITT Barton MRR 208127 PT-102C 1271 TrI Barton MRR 209923 PT-102D 1272 ITT Barton MRR ~ 15381 PT-103 1273 ITT Barton BSN 16953 PT-104 1274 ITT Barton BSN 16953 PT-311 1288 ITT Barton BSN 15381 23 PT-321 1289 ITT Barton P.O. 9172272 Sup. 8 PT-331 1290 ITT Barton BSN 15381 PT-341 1291 ITT Barton BSN 15381 PT-313 1275 ITT Barton BSN 15381 *See note below PT-323 1276 ITT Barton MRR 209923 PT-333 1277 ITT Barton BSN 15381 PT-343 1278 IIT Barton BSN 15381 PT-1013A 1279 ITT Barton. BSN 15381 PT-1013B~ 1280 ANPP Site SWA 19979 PT-1013C 1281 ITT Barton BSN 15381- r PT-1013D 1282 IIT Barton - BSN 15381 PT-1023A 1283 ITT Barton BSN 15381 PT-1023B 1284 ITT Barton MRR 208127 PT-1023C 1285 -ITT Barton BSN 15381 FI-1023D 1286 ITT Barton BSN 15381.
PT-268 1287 ITT Barton- BSN 15381
- Note: Barton 763 Transmitter S/N 1248 is currently installed; complete repair and modification performed by P.O. 9172273 sup. 8.
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DER 82-46 Page 6 of;6 Attachment A'
'ANPP Unit #3 ITT Barton 10CFR21 Washer / Resistor Defect I
. Note: Attachment A lists transmitters for the serial number, tag number and .
model number according to Barton quality records and.is not intended to define the current installed location of any~C-E supplied transmitters.
MODEL-764 Method of-g Tag Number ' Serial Number ' Fixed At Resolution _ Remarks LT-110X 1933 ITT Barton BSN 15381 4
LT-100Y 1934 ITT Barton BSN 14483 i - BSN 15211 LT-311 1935 ITT Barton LT-321 1936 ITT Barton BSN 14966 LT-331 1937 ITT Barton BSN 15211
- LT-341 1938 ITT Barton BSN 14966 j LT-1113A 1943 ITT Barton BSN 15381' 4
LT-1113B 1944 IIT Barton- BSN 16953.
LT-1113C 1945 ITT Barton BSN 15381 i LT-1113D 1946 ANPP Site - SWA 22025
, LT-1123A 1947 ITT Barton BSN~15381 LT-1123B 1948 ITT Barton BSN 16953- 3 LT-1123C 1949 ITT Barton . BSN 16953 j' LT-1123D 1950 ITT Barton BSN 15381 LT-1114A 1951 ITT Barton DCP 3CM-RC-118 LT-1114B 1952 ITT Barton- ~ BSN 15381 LT-1114C 1953 ITT Barton BSN 15381 1
LT-1114D 1954 ITT Barton BSN 15381 LT-1124A 1955 ITT Barton BSN 15381
, LT-1124B 1956 ITT Barton BSN 15381 l LT-1124C 1957 ITT Barton BSN 15381 LT-1124D 1958 ITT Barton BSN 15381 -
PDT-115A 1959 ITT Barton 150t 168383 i PDT-115B 1960 ITT Barton MRR 168383-
} PDT-115C 1961 ITT Barton 15Gt 168383 PDT-115D 1962 ITT Barton MRR 168383
, PDT-125A 1963 ITT Barton 150t 168383 i PDT-125B 1964 ITT Barton MRR 168383 PDT-125C 1965 ITT Barton MRR 168383
- PDT-125D 1966 ITT Barton MRR 168383 LT-268- 2855 ITT Barton Not Applicable Bought after fix 1
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-Attachment B ITT Barton 10CFR21 Zero Based 763 Transmitter. Defect Upper
. Normal' Operating Normal Range Normal. Design Operating vs. Upper Channel Range Pressure Pressure Range Range Limit PT-102 .0 to 2250 psia 2500 psia 2225 to~ 76%
'A,B,C,D, 3000 psia 2275 psia PT-103/104 0 to 2250 psia 2500 psia 2225 to 303%
750 psia 2275 psia 3
PT-311/321/ 0 to 610 psig 700 psig 400 to 83%
331/341 750 psig 625 psig FT-1013/1023 0 to 1070 to 1270 psia . 1070 to 77%
A,B,C,D 1524 psia 1170 psia 1170 psia PT-268 0 to 3 psig 130 psig 0 to 2%
150 psig 3 psig