ML20134D295
| ML20134D295 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 12/27/1996 |
| From: | WISCONSIN ELECTRIC POWER CO. |
| To: | |
| Shared Package | |
| ML20134D254 | List: |
| References | |
| 96-0280, 96-280, NUDOCS 9702050069 | |
| Download: ML20134D295 (13) | |
Text
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NUCLEAR "AND m'cwrce wrT ..
,. CALCULATIONAS,VJEW A{ APPROVAL
., Calculation #
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- - - . - - Number of Pages 1 I Y 4O v5 _
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[~ue. \ ocI To c 4 r Pu dr k Original Calculation d QA-Scope O Revised Calculation. Revision #
l- O Superseding Calculation. Supersedes Calculation #
Modification #
Description:
Other
References:
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Prepared By: Date:
{ h This Calculation has bee / reviewed in accohce with NP 7.2.4. The review was accomplished by one or a combination of the following (as checked):
A review of a representative sample of repetitive ! A detailed review of the original calculation.
calculations.
A review of the calculation against a similar A review by an alternate, simplified, or calculation previously performed. approximate method of calculation.
I Comments: l 9702050069 970122 [*
PDR ADOCK 05000301/
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Date: Approved By: Date:
Reviewed By: ,
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R TITLE: Unczrttinty Associttad CALCULATION # : 96-0280 with Instrumentation Used in Prepared By: EJM IT-14 for Fuel Oil Transfer Pumps Date:12/18/96 Page Iof6 A. Purpose The purpose of this calculation is to determine the uncertainty associated with the instrumentation used in inservice test procedure IT-14 for the fuel oil transfer pumps, (reference 2). The final uncertainty value must include a combination of the uncertainties for all the instrumentation used .in the test that will have an impact on the ability to measure the IST acceptance value during the test performance for comparison to the design basis acceptance value.
B. Method Instrument uncertainties will be calculated for instruments used in the fuel oil transfer pump Inservice Test procedure, IT-14, (reference 2). The fuel oil transfer pump acceptance value will be strictly a total flow value. The fuel oil transfer pump inservice test is performed by aligning the pump to recirculate back to ti.e EDG Fuel Oil Storage Tank, and after waiting five minutes for the system to stabilize, recording the pressure and the flow. The fuel oil transfer pump design basis acceptance value is strictly a flow value, and these pumps are positive displacement pumps whose flow output is nearly independent of the discharge pressure seen by the pump. Since this calculation is only intended to support the design basis IST acceptance criteria, and it is not important what the pump developed head is when the flow value is satisfied, it is not necessary to consider the pressure instrument in this uncertainty calculation. The pressure j instrument is important for ensuring the ASME Section XI acceptance criteria are satisfied since that criteria was established to monitor for pump degradation.
1 This calculation was written for P-206A and P-207A, evaluating the flow j instrument F1-3905, but the results apply equally well to P-206B and P-207B 1 which use flow instruments FI-3928, and FI-3929, respectively. I C. References
- 1. Fuel Oil Transfer Purop operability determination, 10/1/1996.
- 2. PBNP inservice Test, IT-14, " Quarterly Inservice Test of Fuel Oil Transfer System Pumps and Valves", Revision 11, November 15,1996.
- 3. E-Mail, Craig Neuser to Gene LeClair, "lT-14 Gauges", dated 12/27/1996, atached.
- 4. ITT Barton product / bulletin 226-10, Model 226 Indicator, Liquid Level Differential Pressure-Flow rate.
- 5. ITT Barton model 224 differential pressure unit, Component instruction Manual, Control # 01035, dated 1983.
- 6. Plant walkdown information, dated 12/17/1996 from Dirk Raebel to Ed Mercier, attached.
- 7. DG-101 " Instrument Setpoint Methodology", Revision 1, September 12,1995.
- 8. " Process / Industrial Instruments and Controls Handbook", Fourth Edition, Douglas M. Considine, McGRAW-HILL, INC.
- 9. Duke Engineering & Services letter to WE, "Si Pump IST Flow Test Uncertainty Evaluation", September 25,1996.
TITLE: Uncertainty Associat:d CALCULATION # : 96-o280 1 with Instrumentation Used in Prepared By: EJM I IT-14 for Fuel Oil Transfer Pumps Date:12/18/96 Page 2 of 6
- 10. WE Calculation 96-0191, " Minimum Allowable IST Acceptance Criteria for Si Pump Performance", dated 9/25/1996.
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D. Assumptions 1
- 1. The temperature effect on the instrumentation will be assumed to be negligible as the transmitters are calibrated and used in essentially the same temperature environment.
- 2. If manufact arer's data was not located, uncertainties associated with drift of an instrument have been assumed to be the smaller of either 0.5% of full scale, or the instrument calibration tolerance. This value (0.5%) is based on engineering judgment of the maximum expected drift between calibrations for the instrumentation involved. Alternatively, the calibration tolerance is used if smaller, because instrumentation found regularly out of calibration are typically either repaired or replaced. j
- 3. The M&TE error is assumed to be the smaller of either 0.5% of the instrument range, or the calibration tolerance for all IST instruments. This value (0.5%) is conservative based on the research performed for Calculation 96-0191,
" Minimum Allowable IST Acceptance Criteria for SI Pump Performance" (reference 10). The instrument accuracy is used if smaller because it is the i practice of l&C to use a calibration instrument which is at least as accurate as the instrument being calibrated.
- 4. Based on a walkdown of the flow indicator, F1-3905, it appeared that there should be little or no static head effects due to the upper and lower taps and /
transmitter elevations that is discussed in section 3.3.3.18 of reference 7.
E. Inputs For this calculation. the total uncertainty associated with the instrumentation used to perform the IST test must be accounted for when obtaining the minimum IST acceptance criteria Contributors to this total uncertainty include:
- Instrument (transmitter & indicator) accuracy
- Indicator readability
. Tolerance
- Drift F. Instrument Uncertainty Determination
- 1. Instrument Uncertainties for F1-3905, P-206A/P-207A G-01/G-0.2 EDG FOTP Test Line Flow indication, Barton model 226 Differential Pressure indicator, and Barton Model 224 Differential P.cssure Unit, range 0-60 gpm.
- a. Indicator readability: Based on plant walkdown by Dirk Raebel, the meter f ace has srnallest divisions of 0.5 gpm in the range of interest (between 25 and 60 gpm.) or 0.5/60 equals 0.833% of range. (reference 6)
- b. Indicator accuracy, 0.5% (reference 4),
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l TITLE: Uncsttiinty Astocistsd CALCULATION # : 96-0280 I with Instrumentation used in Prepared By: EJM IT-14 for Fuel Oil Transfer Pumps Date.12/18/96 Page 3 of 6
- c. Differential Pressure Unit Accuracy 1.5% (reference 5)
- d. Calibration Tolerance; Currently, the instruments are not included in a regular calibration callup procedure. Per Craig Neuser E-Mail, reference
/
3 attached, the as left tolerance for the instrument is assumed to be 2%.
- e. Drift; assumed to be 0.5%. (assumption 2)
- f. M&TE (Instrumentation uncertainty due to calibration); assumed to be ,
i0.5%. (assumption 3) j
- g. FE-3905, Daniel Orifice Fitting Co., model #500, l The nominal accuracy for a flow orifice is 10.6% (reference 8). l Since the bellows in the indicator effectively acts as the square root converter, it is necessary to treat this instrument as a square root converter. All the above errors with the exception of the indicator readability, are treated as input errors.
Input errors:
a = f(0.005)# + (0.015)' + (0.02)' + (0.005)# + (0.005)# + (0.006)2 a= 2 0.0271 = 2.71 % j i
TITLE: Unctrttinty Associtted CALCULATION # 0280 with instrumentation Used in Prepared By: EJM IT 14 for Fuel Oil Transfer Pumps Date:12/18/96 Page Jof6 Using the transfer function for a square root device from Appendix D of reference 7.
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Eq. 1 b =g(a / 2B)* + e 2 Where b = Output error from non-linear device a = input error to non -linear device B = Point of Interest (0 - 100% of span = 0 to 1) e = Device Uncertainty from non -linear device (indicator readability)
To determine the point of interest, it is necessary to look at Equation 1 and recognize that the smaller that B is, the greater that the output error will be.
From a review of past IST data, the lowest value for this reading was about 37 gpm
" " "'"* 9 = 0.616 B = = =
Instrument range 60 gpm 100 %
Evaluating Equation 1.
b = l g(0.0271/ 2+0.616)2 + (0.00833)2 /
b = 0.0235 = 2.35%
This error converted to gpm:
b = t 2.35%
- 60 gpm = 11,41 gpm /
G. Results The totalinstrument uncertainty associated with the inservice test procedure for j the fuel oil transfer pumps is 1.41 gpm
TITLE: Unc:rtrinty AssociItsd CALCULATION # : 96-0280 with Instrumentation Used in Prepared By: EJM IT.14 for Fuel Oil Transfer Pumps Date:12/18/96 Page 5 of 6
- Printed For:
- I Date: Wednesday, 27 November 1996 11:39am CT To: l Cc: l From:
Subject:
IT-14 gauges All of the discharge pressure and flow gauges used in IT-14 were calibrated in 1994. These gauges should be calibrated by the next scheduled IT-14 which is 12/26/96. However, the test will probably be ran early due to the holidays.
Gene, please initiate the work orders and have the following gauges calibrated j prior to 12/13/96 (tolerance less than or equal to +/-2% of full scale)
PI-3973A, PI-3974A, FI-3905, PI-3973B, FI-3928, PI-39748, FI-3929 I will make sure ops does not run the test prior to 12/13/96. If you need more time please let me know. John, please incorporate the above mentioned ga uges into the appropriate calibration procedure. These instruments should be designated as "Special Use Instruments".I will initiate a condition report do cumenting that these instruments have not been calibrated since 94 and were not put into a calibration procedure. Please call with any questions or i I
concerns.
Thanks, t
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Sheet 1 g2ge ELEVATION (PIPE TO INSTRU. HIEGHT ABOVE yy3 METER FACE INFO CENTERLINE) FLOOR Plant Level g cl A g, 1PI-184 See attached page 90.75' 26' PAB p
gy.g g _The meter range is 0-160 psi. The major labeled divisions g a8 " E* *
- S "' ""
- E in 1PI-108 See attached page 36 5" 26' PA8
- - t [2 dwisions indicate 10 psi divisions Four marks between the 10 psi marks are 2 psi divisions.
8 4 The meter range is'O-160 psi. The major labeled divisioris' 4
" ^ are 20 psi lhe mid size divisions between the 20 psi
~
See attached page 51 28' DGB divisions indicate 10 ps! divisions. Fotrr marks between the 10 pst marks are 2 psi divisions.
F1-3929, Fl-3928 se geges am e same. ey ave n n near a es.
Fl3905 Range (Numbers D indicated on gage) Marks between divisions ~
6 to 10 Nono h
. 10 to 15 4 divsions; 1 gpm each 15 to 20 4 dv sions; 1 gpm each 20 to 25 4 diWons; 1 gpm each 25 to 30 *I" * E ' "" ** ' " " " "'8 "**
gpm each, bets. sen each major division 4 Major dwisions,1 gpm each, w/ 5 minor divisions,0.5 E 30 to 35 cE 9Pm each, between each major division ~
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j5 35 to 40 4 Major dwisions,1 gpm each, w/ 5 minor divisions, C 5 7jg @ gpm each, between each major dwision gcg 4 Major dwisions,1 gpm each, w/ 5 minor dwisions. 0.5 40 to 45 8 'i?, H gpm each, between each major division jjf 45 to 50
- " ' ' 9E* '#C ** ** "*'
>E gpm each, between each major division j~ t j h {$ h o 55 4 Maj r dwisions,1 gpm each, w/ 5 rranor duisions. 0 5
~
j2; 3 _ _ _ _ _
gpm each, between each major dwision g o,i, g gg a >g c5-mgb 5 to 60 4 Major dwisions,1 gpm each, w/ 5 minor dwisons. 0.5__
[ J g m each, between each major division _.' -
g y E;70 4 *
$ C en+= = "*"' 76Y 44'T4 ro. yg, gogo f=*
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OPERABILITY DETERMINATION Degraded or potentially nonconforming equipment:
Fuel oil transfer pumps P-206A, P-206B, P-207A, and P-207B.
- 2. Safety function (s) performed:
ne fuel oil transfer pumps support emergency diesel generator operation by transferring oil from underground fuel oil storage tanks T-175A and T-175B to their respective EDG day tanks. Either fuel oil transfer pump is capable of serving either emergency diesel generator unit in that train and by use of a manual cross-connect between the Train A and Train B fuel oil systems, any of the four pumps is capable of serving any of the four emergency diesel generator units.
- 3. Circumstances of potential nonconformance, including possible failure mechanisms:
l Condition Report 96-416 identified a potential concern for adequacy of the IST Program to ensure that pumps in the program l meet design basis as well as ASME Section XI requirements. This evaluation sur prts determination of operability pen #ng completion of detailed analysis.
- 4. Requirement or commitment established for the equipment, and why it may not be met:
TS Reauirement TS 15.3.7.A.I.e requires a fuel supply of 11,000 gallons available in each tank which is being relied upon to supply any operable emergency diesel generators. He Basis for TS 15.3.7 states that the EDG fuel oil system is considered operable when 1) I 1,000 gal. of fuel oil is initially available in the fuel oil storage tank which supplies the diesel generators [Because the EDGs consume approximately 205 gallons of fuel per hour when fully loaded, the 11,000 gallon fuel supply in the emergency fuel tank provides sufficient fuel to operate one EDG at design load for more than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.],2) the EDG day tank for that EDG is operable and for G-01 and G-02 the associated motor-operated fill valve is operable,3) for G-01 and G.
02, at least one of the two base-mounted sump tank fuel oil transfer pumps is operable, and 4) the fuel oil transfer system associated with the EDG is operable. However, the fuel oil transfer system is allowed to be out-of-service for four hours for G-01 and G-02 due to a combined four hour supply of fuel oil in the diesel base and day tanks which do not require a fuel oil transfer pump for flow to the associated EDG The fuel oil transfer system is allowed to be out-of service for two hours for G-03 and G-04 due to a two-hour supply of fuel oil in the day tank. The transfer system may be out-of-service for longer periods if an appropriate alternate source of fuel is made available to the diesel generators.
Commitment VPNPD 93 171," Design Summary for the Installation of Two Additional Emergency Diesel Generators, Point Beach Nuclear Plants, Units 1 and 2," dated September 24,1993 provided design information for the diesel generator fuel oil transfer system. This document states that all four fuel oil transfer pumps were sized to transfer oil to the associated day tank at a rate at least six times the maximum rate of fuel consumption. Based on a consumption rate of 205 gallons per hour, the fuel oil transfer pumps were sized to deliver at least 1230 gph, or 20.5 gpm.
It was questioned whether the flow requirements established by IT-14 are sufficient to verify fuel oil transfer pump operability.
- 5. How and when the potentially nonconforming equipment was first discovered:
His generic concern was first identified in June 1996 as a specific concern for safety injection pump acceptance criteria from ASME Section XI versus design requirements.
- 6. Basis for declaring affected equipment operable:
Operability of the fuel oi! Iransfer pumps is periodically verified by IT-14. " Quarterly Inservice Test of Fuel Oil Transfer System Pumps and Valves." He IST flow requirements for each of the four pumps and the flow measured during the most recent test are presented in the attached table. The ASME flow requirements for the fuel oil transfer pumps ensure that the pump flow is far above that required to support diesel operation. Although the fuel oil transfer pumps were sized to deliver six times the fuel consumption rate of a single EDG (20.5 gpm), the installed pumps are actually rated at 35 gpm at 35 psig discharge pressure (Ref. CIM 01533). During inservice testing, the P-206A and P-207A pumps are run through a recirculation path back to fuel oil storage tank T-175A. His results in a discharge pressure of approximately 2 to 3 psig.
For P-206B and P-207B, the inservice test is accomplished by pumping fuel oil to a day tank, resulting in a discharge PDF-1553 Revision 0 06/W94
l l' pressure of approximately 26 psig. He difTerence in discharge pressure is not significant because the Dow requirements established by the IST Program are far in excess of the Dow needed to support EDG operation. Additionally, the fuel oil transfer pumps are screw-type pumps (rotary positive displacement pumps) whose flow rate is relatively independent of pump discharge pressure. Furthermore, the ability of the P-206A and P-207A transfer pumps to pump fuel oil to the G-01 and G-02 day tanks is verified on a monthly basis during diesel generator testing. Herefore, the ASME How requirements established by IT-14 are conservative and sufficient for proving operability of the fuel oil transfer pumps. By comparing the Dow measured during the most recent IT 14 to the Dow limits established by the IST Program, it is concluded that the fuel oil transfer pumps are operable. l Prepared By: _ Date: /O I d Approved By: __ Date: 'J! b,
/ AGS Manaaer //
Reviewed By: p Date: / 4 D{v Table 1 Pump Design Requirement ASME Requirement Most Recent (9/28/96) Test P-206A 2 20.5 gpm 40.73 - 48.18 gpm 43 gpm P-206B 2 20.5 gpm 34.41 - 40.70 gpm 37 gpm P-207A 2 20.5 gpm 40.76 - 47.85 gpm 43.5 gpm 07B 2 20.5 gpm 38.60 - 45.65 gpm 41.5 gpm i
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PDF-1553 Reusion 0 06/24S4
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l Pump Flow Reference j ** FLOW TEST ** Values and Limits Date Established: 9/14/95 ,
Pump #: P206A IT-014 Entered Ly: LEH 1 i
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[ REFERENCE VALUES Reference Pressure: - 3.LO Flow: 43.80 gpm Vibration Motor End Pump End Point C: .005 ips Point A: .006 ips Point D: .011 ips Point B: .013 ips l
I Point E: .005 ips l
l ACCEPTABLE RANGE l Flow: 41.61 gpm to 48.18 gpm Vibration Motor End Pump End
' Point C: s .013 ips Point A: s .015 ips Point D: s .028 ips Point B: s .033 ips Point E: s .013 ips ALERT RANGE l
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l Low Flow: 40.73 gpm to 41.61 gpm l
l Vibration Motor End Pump End !
! Point C: .013 ips to .030 ips Point A: .015 ips to .036 ips !
Point D: .028 ips to .066 ips Point B: .033 ips to .078 ips !
j Point E: .013 ips to .030 ips
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j REQUIRED ACTION RANGE 1
l Low Flow: 40.73 gpm i j High Flow: 48.18 gpm '
Vibration Motor End Pump End i i
Point C: > .030 ips Point A: > .036 ips t
Point D: > .066 ips Point B: > .078 ips l Point E: > .030 ips 1
l COMMENT:
l-4.d $g 35. 1'I fl ?f t.
43 pm
Pump Flow Reference
- FLOW TEST =* Values and Limits Pump #: P206B Date Established: 9/14/95 IT-014 Entered By: LEH REFERENCE VALUES Reference Pressure: ~ 26.50 Flow:
. 37.00 gpm I
Vibration Motor End Pump End Point C: .017 1ps Point A: .015 ips Point D: .037 ips Point B: .022 ips
, Point E: .017 ips ACCEPTABLE RANGE Flow: 35.15 gpm to 40.70 gpm Vibration Motor End Pump End i l
Point C: s .043 ips Point A: s .038 ips i Point D: s .093 ips Point B: s .055 ips I Point E: s .043 ips ALERT RANGE Low Flow: 34.41 gpm to 35.15 gpn Vibration Motor End Pump Er.d Point C: .043 ips to .104 ips Point A: .038 ips t$' .090 ips Point D: .093 ips to .222 ips Point B: .055 ips to .131 ips Point E: .043 ips to .104 ips REQUIRED ACTION RANGE Low Flow: 34.41 gpm High Flow: 40.70 gpm Vibration Motor End Pump End Point C: > .104 ips Point A: > .090 ips Point D: > .222 ips . Point B: > .131 ips Point E: > .104 ips COMMENT:
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! i Pump Flow Reference i
- FLOW TEST ** Values and Limits Date Established: 9/14/95 Pump #: P207A IT-014 Entered By: LEH REFERENCE VALUES t
Reference Pressure: - 2.20 Flow: 43.50 gpm Vibration Motor End Pump End l
Point C: .0J2 ips Point A: .004 ips l Point D: .004 ips Point B: .003 ips I
, Point E: .004 ips ;
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ACCEPTABLE RANGE Flow: 41.33 gpm to 47.85 gpm l
Vibration Motor End Pump End l
)
Point C: s .005 ips Point A: s .010 ips l Point D: s .010 ips Point B: s .008 ips Point E: s .010 ips I
ALERT RANGE Low Flow: 40.76 gpm to 41.33 gpm Vibration Motor End Pump End Point C: .005 ips to .012 ips Point A: .010 ips to .024 ips Point D: .010 ips to .024 ips Point B: .008 ips to .018 ips Point E: .010 ips to .024 ips REQUIRED ACTION RANGE Low Flow: 40.76 gpm ,
High Flow: 47.85 gpm 1 Vibration Motor End Pump End l
Point C: > .012 ips Point A: > .024 ips Point D: > .024 ips Point B: > .018 ips Point E: > .024 ips l
COMMENT:
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Pump Flow Reference l
- FLOW TEST ** Values'and Limits Date Established: 9/14/95 Pump #: P207B IT-014 Entered By: LEH REFERENCE VALUES Reference Pressure: - 28.00 Flowi 41.50 gpm Vibration Motor End Pump End Point C: .013 ips Point A: .019 ips Point D: .023 ips Point B: .015 ips Point E: .017 ips ACCEPTABLE RANGE Flow: 39.40 gpm to 45.65 gpm Vibration Motor End Pump End Point C: s .032 ips Point A: s .048 ips Point D: s .057 ips Point B: s .038 ips ,
Point E: s .043 ips J l
I ALERT RANGE l Low Flow: 38.60 gpm to 39.40 gpm l
Vibration Motor End Pump End Point C: .032 ips to .077 ips Point A: .048 ips to .115 ips :
Point D: .057 ips to .136 ips Point B: .038 ips to .090 ips Point E: .043 ips to .103 ips REQUIRED ACTION RANGE Low Flow: 38.60 gpm High Flow: 45.65 gpm Vibration Motor End Pump End Point C: > .077 ips Point A: > .115 ips Point D: > .136 ips Point B: > .090 ips Point E: > .103 ips COMMENT:
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