ML14205A441
| ML14205A441 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, McGuire  |
| Issue date: | 08/26/2013 |
| From: | Duke Energy Carolinas |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML14205A436 | List: |
| References | |
| Download: ML14205A441 (19) | |
Text
ENCLOSURE 2 MCC-1210.04-00-0043, Att 6, Rev. 5, Instrument Uncertainty for CA-RN Swapover Suction Pressure Switch Loops
MCC Adw /ý / o - c# - ('00 ooý-3 A TT'ENTION
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THIS MAY NOT BE THE COMPLETE DOCUMENT. THERE MAY BE APERTURE CARDS, DRAWINGS, CD'S, FICHE OR OTHER VOLUMES ASSOCIATED WITH THIS CALCULATION.
VERIFY HARD COPY REVISION AGAINST NEDL IMMEDIATEDLY PRIOR TO EACH USE.
Form 101.1 IRf2.12~
CERTIFICATION OF ENGINEERING CALCULATION Station and Unit Number: McGuire Nuclear Station, Units 1 &2 Revision No.: 5 Title of Calculation: Instrument Loop Uncertainty for CA-RN Swapover Suction Pressure Switch Loops CAPS5002. 5012, 5042. 5350. 5360. 5370. 5380. 5381. 5390 & 5391 Calculation Number: MCC-1 210.04-00-0043 ACTIVE: Yes 0 Nonl TYPE I: Yes [] No Z QA CONDITION of items covered: 1 Microfiche Attachment List: Yes [] No Z (See Form 101.4) DSD List: Yes [] No Z (See Form 101.7)
Calculation Body Pages (Vol.) Supporting Documents (Vol.) Volumes Revised Deleted Added Revised Deleted Added Deleted Added None None None Attachment 6 Pages 7,9,11 The signatures below certify that this calcul ton has been originated, checked, inspected and approved in accordance with established proce d ri s Originated By: Ibr es, Michael Broome (mentor) Date: 6-z *- / 3 Checked By: Bryan Meyer / W . N,14 D'ate: A3 Verification Method: Method 1 'Method 2 t Method 3 L- Other RI Approved By: Matthew Isenhour D'ate: -'-P-Issued Received -nn , Date.'a !ik\qW-to DCRM A ,-A ý zl,, Date: 9-25-13 by DCR!67*RL Complete the Spaces Below for Documentation of Multiple Originators (Orig.) or Checkers (Chk.)
Pages: Orig.:_ Date:
Verif. Method 1l0 2-] 30j Otherli Chk.: Date:_
Pages: Orig.:_ Date:
Verif. Method 1E'] 20] 3r] Other[:] Chk.: Date:_
Form 101.1 R02-12)
CERTIFICATION OF ENGINEERING CALCULATION Station and Unit Number: McGuire Nuclear Station, Units I & 2 Revision No.: 4 Title of Calculation: Instrument Loop Uncertainty for CA-RN Swapover Suction Pressure Switch Loops CAPS5002, 5012. 5042, 5350, 5360, 5370, 5380, 5381, 5390 & 5391 Calculation Number: MCC - 1210.04-00-0043 ACTIVE: Yes Z No [l TYPE I: Yes L] No 0 QA CONDITION of items covered: 1 Microfiche Attachment List: Yes n- No fl (fSeeForm 101.41 DSD List: Yes nl No I,1 (see Form 101.7'l Calculation Body Pages (Vol.) Supporting Documents (Vol.) Volumes Revised Deleted Added Revised Deleted Added Deleted Added All None None Attachment 3 Attachment 6
/f The signatures below certify that this calculation has been originated, checked, inspected and approved in accordance with established procedures.
O nnales & Michael Broofie Date: 2- Z,9-/
Checked By: Bryan Meyer ' (. s, Date: 7-Z 1-11 Verification Method: Method 1 0 Method 2 -] Method 3 [] Other LI Approved By: Matthew Isenhour L.z-,*,.,.- Date: 9_ __31-13 Issued Received f to DCRM'-ý_, Date: 2-3/-/3 by DCRM:" Adviu Date: 1- 31 Com*lete the Spaces Below for Documentation of Multiple Originators (Orig.) or Checkers (Chk.)
Pages: Orig.:_ Date:
Verif. Method 1WEl 2W 3E] Other[] Chk.: Date:
Pages: Orig.:_ Date:
Verif. Method 1W] 2W 3W] OtherlE Chk.: Date:
/
Form 101.1 IR02-121 CERTIFICATION OF ENGINEERING CALCULATION Station and Unit Number: McGuire Nuclear Station, Units 1 & 2 Revision No.: 3 Title of Calculation: Instrument Loop Uncertainty for CA-RN Swapover Suction Pressure Switch Loops CAPS5002, 5012, 5042, 5044, 5350, 5360, 5370, 5380, 5381 & 5390 Calculation Number: MCC -1210.04-00-009 -a s-&*'-
ACTIVE: Yes 0 No L- TYPE I: Yes F] No 0 QA CONDITION of items covered: 1 Microfiche Attachment List: Yes [l No Z (See Form 101.l 4) DSD List: Yes [: No 0 (See Form 101.7)
Calculation Body Pages (Vol.) Supporting Documents (Vol.) Volumes Revised Deleted Added Revised Deleted Added Deleted Added 1-16 None None The signatures below certify that this calculation has been originated, checked, inspected and approved in accordance with established procedures.._
Originated By: ,- "u',P1AJ Date: 5 L.-'P *-KCUW-, ' Date: 5/30//3 Checked By: __ _ __ _ __ _
Verification Method: Method I Method 2 Li Method 3 L1 Other Li Approved By: /2I:d//L* " '/gH;,, Date:
Issued 1'.-4
- 5/St/'_.. / Received __________Date:
to DCRM: Date: by 4a/4 Date: 13 1
Complete the Spaces Below for Documentation of Multiple Originators (Orig.) or Checkers (Chk.)
aPJei Pages: Orig.:_ Date:
Verif. Method 10L 20i 3E] OtherEl Chk.: Date:_
Pages: Orig.:_ Date:
Verif. Method 1 L] 20I 30- Other[l Chk.: Date:
Formn01077 (R7-89) I FORM 101.1 I REVISION 13 CERTIFICATION OF ENGINEERING CALCULATION STATION AND UNIT NUMBER MC.tUIR-, .CLI(R STA-rnONJ, UJItT!5 4-o- 2, TITLE OF CALCULATION jps'I " ,,* Loop Ut)CEgp'A*-Ip y FoP. CA-R14 Swapl:x)N
,Sixo~WsuiS r~Lw?5AS5v, o~ r~, cA~3v ~57b.Vb 5-39j* 4-S390' CALCULATION NUMBER 'C tO. C-Oo-Co4 ORIGINALLY CONSISTING OF:
PAGES I THROUGH In __ _
TOTAL ATTACHMENTS 3 TOTAL MICROFICHE ATTACHMENTS TOTAL VOLUMES I TYPE I CALCULATION/ANALYSIS YES El NO I5 TYPE I REVIEW FREQUENCY THESE ENGINEERING CALCULATIONS COVER QA CONDITION ITEMS. IN ACCORDANCE WITH ESTABLISHED PROCEDURES, THE QUALITY HAS BEEN ASSURED AND I CERTIFY THAT THE ABOVE CALCULATION HAS BEEN ORIGINATED, CHECKED OR APPROVED AS NOTED BELOW:
ORIGINATED BY
- DATE 1,tc CHECKED BY - C. DATE *///
APPROVED BY -- DATE___Z_/_____,_
ISSUED TO TECHNICAL SERVICES DIVISION -*-z/°' DATE _ ________
RECEIVED BY TECHNICAL SERVEICCESIOVNSION DATE '1/2 MICROFICHE ATTACHMENT LIST: El Yes XNo SEE FORM 101.4 REV. CALCULATION PAGES (VOL) ATTACHMENTS (VOL) VOLUMES ORIG CHKD APPR ISSUE NO. DATE REC'D REVISED DELETED ADDED REVISED DELETED ADDED DELETED ADDED DATE DATE DATE DATE 14_ '-0.a, ,,,u. "7/aIj7 V 17
__ __ .1 __ __ __ __ __ I I
Form 101.2 (R3-03) Calculation Number MCC -1210.04-00-0043 REVISION DOCUMENTATION SHEET Revision Revision Description Number 3 Issued for ECI 10782. Pages 1-16, the header were revised for new revision number, date and originator. Section 4 was revised to show UFSAR and 4c was changed to reference the correct UFSAR section. Reference 5N changed to McGuire Equipment Database. Assumption 61 changed to reference EDB. Page 14 the average waterleg and average setpoint changed.
4 Issued to support EC109071 and EC109072. Pages 1-17, the header were revised for new revision number, date and originator. Removed conservatism in M&TE and PMA uncertainties.
Incorporated the option of single-sided uncertainty reduction by a factor of 0.84. Incorporated setpoint changes per Mechanical calculation MCC-1223.42-00-0032. Incorporated setting analysis.
Also issued to resolve discrepancies outlined in PIP M-1 3-03438.
5 Removed the single-sided setpoint reduction factor of 0.84 from the TLU per PIP M1 3-8118.
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Form 101.2 Revision 1 26164 (R9-89) File/Calculation No. A . I 2-10.(Lf-i -0i03 REVISION DOCUMENTATION SHEET Review Revision Frequency Revision Description Number Changed Yes/No 4.pcfr~Mwre rA.
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Attachment 6 MCC-1210.04-00-0043 Page I of 11
Purpose:
Note: The analysis found within this attachment is intended to support completion of Engineering Changes (EC) 109071 and 109072. This attachment will become the "As-built" configuration once the ECs have been fully implemented This calculation determines the total instrument loop uncertainty for the instrumentation associated with monitoring Auxiliary Feedwater (CA) pump suction pressure and initiating swapover to the Nuclear Service Water (RN) system, its' assured source, on low suction pressure. This calculation will prove that adequate instrument loop uncertainty margin has been used to establish the setpoint for CA pump suction supply swapover to RN on low suction pressure. This calculation will also establish the Technical Specification Allowable Value for use during channel calibrations.
Instrument Loop Function:
The instrument loops consist of Static-O-Ring model 12N6-B45-U8-CIA-JJTTNQ pressure switches that monitor CA pump suction header pressure. These pressure switches align the RN system with the CA suction header by opening various RN and CA swapover valves upon sustained low suction pressure as follows:
EDB Number Description 1/2CAPS5002 Opens valve CAI5A on low CA pump suction pressure.
1/2CAPS5350 Opens valve RN69A on low CA pump suction pressure.
1/2CAPS5012 Opens valve RN162B on low CA pump suction pressure.
1/2CAPS5360 Opens valve CA18B on low CA pump suction pressure.
1/2CAPS5042 Opens valve CA86A on low CA pump suction pressure 112CAPS5370 Opens valve RN69A on low CA pump suction pressure.
1/2CAPS5381 Opens valve RN162B on low CA pump suction pressure.
1/2CAPS5390 Opens valve CA1 16B on low CA pump suction pressure 1/2CAPS5380 Opens valve CA162B on low CA pump suction pressure.
1/2CAPS5391 Opens valve CA162B on low CA pump suction pressure.
Low suction pressure must be sustained for a predefined period of time (as determined by a time delay) before these valves receive signals to open. This reduces the chances of inadvertent swapover to RN from low pressure spikes or spurious low pressure signals. EC 109071 & EC 109072 will install four new pressure switches (1/2CAPS5380 & 1/2CAPS5391) to automatically align the Standby Shutdown System (SSS) related suction source during an Extended Loss of AC Power (ELAP) event. Therefore, seismic effects must be taken into consideration while performing the TLU for the four new pressure switches.
Although the ELAP related pressure switches (1/2CAPS5380 & 1/2CAPS5391) are not associated with a Technical Specifications Allowable Value (AV), they will be procured as safety-related switches since their power source is safety related. The existing eight pressure switches are associated with a Technical Specifications AV, and will need to have their setpoint higher to ensure actuation prior to the ELAP related pressure switch actuation. To ensure no overlapping occurs, the margin between the setpoints for the ELAP related and Technical Specifications related pressure switches is equivalent to their added uncertainties. Furthermore, the setpoints for the Technical Specifications related pressure switches will be 7.0 psig for most and 8.0 psig for switches 2CAPS5002 & 2CAPS5350. The setpoint for the newly installed ELAP related pressure switches (1/2CAPS5380 & 1/2CAPS5391) will be 3.5 psig (Reference A).
The Total Loop Uncertainty (TLU) for all pressure switches must be within an allowable uncertainty of
- 1.63 psig (Reference A).
Instrument Loop Process Range:
The setpoint for the pressure switches can be adjusted between 1 to 16 psig (Reference L); giving a span of 15 psig. The Upper Range Limit (URL) is equivalent to the upper most adjustable setting of 16 psig.
The process range for CA pump suction header pressure is normally 0 to 67 psig (Reference A) and a
Attachment 6 MCC-1210.04-00-0043 Page 2 of 11 design, maximum pressure of 135 psig. Therefore an overrange pressure effect is not considered since this effect occurs when the pressure switches exceed 200 psig (Reference L).
Environmental Conditions:
The CAIRN swapover pressure switches are located in the motor driven and turbine driven CA pump rooms in the Auxiliary Building on Elevation 716' (per Reference K). The maximum ambient temperature in the turbine driven pump room during an SSS or ELAP event is 148°F and 131OF in the motor driven pump room (Attachment 6 of Reference T). The bounding temperature of 148°F will be used as the maximum accident temperature for the ELAP related pressure switches. A calibration temperature of 60 0 F will be used (Reference R). For the Technical Specification pressure switches, a bounding accident temperature of 1200 F will used per Reference H. A calibration temperature of 60°F will be used (Reference R)
Total integrated dose levels for the area are less than 1000 rads (Reference H).
Waterleg Correction:
EDB Number Function Setpoint (psig) Waterleg (psig) Corrected Setpoint 1CAPS5002 Tech Specs 7.0111 4.88121 11.88 1CAPS5012 Tech Specs 7.0111 4.89121 11.89 ICAPS5042 Tech Specs 7.011 3.02121 10.02 1CAPS5350 Tech Specs 7.0111 3.61 t 10.61 1CAPS5360 Tech Specs 7.0111 3.40121 10.40 1CAPS5370 Tech Specs 7.011J 3.02121 10.02
( 1CAPS5381 1CAPS5390 Tech Specs Tech Specs 7.0111 7.011J 3.541;"
4.08'2J 10.54 11.08 lCAPS5380 ELAP 3.511 3.031;" 6.53 1CAPS5391 ELAP 3.5111 3.90r12 7.40 2CAPS5002 Tech Specs 8.0"11 2.891;" 10.89 2CAPS5012 Tech Specs 7.011J 3.83121 10.83 2CAPS5042 Tech Specs 7.0111 3.21121 10.21 2CAPS5350 Tech Specs 8.0111 3.27121 11.27 2CAPS5360 Tech Specs 7.OL'J 3.68121 10.68 2CAPS5370 Tech Specs 7.0"1 3.21121 10.21 2CAPS5381 Tech Specs 7.0111 4.08121 11.08 2CAPS5390 Tech Specs 7.0111 4.101;" 11.10 2CAPS5380 ELAP 3.511J 3.21131 6.53 2CAPS5391 ELAP 3.511J 4.08I3J 7.58 Notes:
- 1. Reference A
- 2. Reference N
- 3. Assumption D Plant Conditions Requiring Operation:
The plant conditions identified in this calculation are as follows:
Condition Abbreviated Normal Norm Seismic Seis Post-Seismic Post-Seis other conditions Acc Methodology:
Attachment 6 MCC-1210.04-00-0043 Page 3 of 11 This calculation develops the Total Loop Uncertainty (TLU) using the basic technique and methodology presented in Reference I and S.
UFSAR/Technical Specification Applicability:
- a. UFSAR Section 3.11, Environmental Design of Mechanical and Electrical Equipment.
- c. UFSAR Section 10.4.10, Auxiliary Feedwater System.
- d. Technical Specification, Tables 3.3.2-1, ESFAS Instrumentation, trip setpoints, and response times.
References:
A. MCC-1 223.42-00-0032, Rev. 11, Instrumentation Functional Requirements for Selected Instruments in the Auxiliary Feedwater System (CA).
B. MCEE-138-00.26-01, 138-00.45-01, 147-21,01, 147-22.01, 147-28.01, 147-29.01, 147-32, 147-33, 238-00.13-01, 238-00.26-01, 247-21.01, 247-22.01, 247-28.01, 247-29.01, 247-32, & 247-33, Electrical Elementaries for CA & RN Systems.
C. Deleted D. MCID-1499-CA.01, -CA.01-01, -CA.12, -CA.12-01, & -CA.12-02, MCID-2499-CA.01, -CA.01-01, -
CA.12, -CA.12-01, &-CA.12-02, Instrument Details for Auxiliary Feedwater Pump suction pressure.
E. IP/O/N3002/09, Calibration Procedure for Static-O-Ring Pressure Switches.
F. MCM 1210.04-0301, Nuclear Qualification Test Report 9058-102 for SOR Pressure, Vacuum, and Temperature Switches with appendices A, B, & C.
G. Mensor Precision Instruments & Systems, Pressure Measurement Data Sheet No. 150 (Attachment 2).
H. MCS-1240.03-00-0001, Specifications for Plant Environmental Parameters, Rev. 006.
I. Instrument Society of America ISA-RP67.04-Part 11-1994 "Methodologies for Determination of Nuclear Safety Related Setpoints".
J. Fax Letter from Sherry Burns, Static-O-Ring, to Brian Marrow, Duke Power, dated 7/21/93 (Attachment 1).
K. MC-1499-01.04 & MC-2499-01.04, Instrument Location Drawings.
L. SOR Pressure &Vacuum Switches for Process Applications product catalog (Attachment 3).
M. Deleted N. McGuire Equipment Database (EDB).
- 0. Deleted P. Letter to T.W. Fortner Dated 11-10-93 for Seismic Review of SOR Test Report No. 60388-94N
(. (Attachment 4).
Q. MCM 1210.04-0300, SOR Test Report No. 60388-94N for Reduced Seismic Level Testing.
R. MCC-1210.04-00-0053, Rev. 1, Plant Field Calibration Temperatures & Various M&TE Uncertainties.
Attachment 6 MCC-1 210.04-00-0043 Page 4 of 11 S. EDM-1 02, Rev. 4, Instrument Setpoint Uncertainty Calculations.
T. MCC-1240.00-00-0008, Auxiliary Building Temperature Analysis during SSF Operation.
U. ECs 109071 & 109072, Assured CA Suction for Extended SBO per NRC Order EA-12-049.
Assumptions:
A. The instrument loops are calibrated every 22.5 months (18 months +/-25% grace period) at most.
B. Measurements of waterleg height in the EDB are assumed to be within a tolerance of +/-3 inches of water (PMAwatdeg).
C. The pressure switch housings are assumed to be vented per the instrument detail drawings in order to minimize the Temperature Effects (TE).
D. The newly installed ELAP pressure switches will be mounted in the same location as the previous SSS pressure switches that were removed (1/2CAPS5380 & 1/2CAPS5044); thus having the same waterleg per the EDB.
Attachments:
- 1. Letter from manufacturer Static-O-Ring (SOR) dated 7/21/1993.
( 2. Mensor Model 15000 digital pressure gauge M&TE specifications.
- 3. SOR switches for the nuclear power industry specifications.
- 4. Seismic review of SOR test report # 60388-94N
- 5. Deleted Block Diagram:
IAux. Bldg.
RN/CA Swapoer Cicuisstry
Attachment 6 MCC-1 210.04-00-0043 Page 5 of 11 Uncertainty Terminology:
The following uncertainties are considered to be random and independent unless stated otherwise.
Environmental Allowance (EA)
The pressure switches are located in a mild environment with respect to radiation and pipe rupture.
Therefore, this term is considered negligible.
All pressure switches must function during and following a seismic event.
Seismic qualification is documented in Reference P. Reference P states that no contact chatter or false closure was experienced during seismic testing with the process pressure at 5% of span from the pressure setpoint. Therefore, the pressure switches will be ensured of accomplishing their safety function without chatter or false closure during a seismic event as long as the process pressure is at least 5% of span from the setpoint. The pressure at which swapover m'ust occur must be at least 5% of span below the nominal setpoint of the pressure switch (neglecting all other instrument uncertainties). This ensures that any potential chattering occurs at a point before swapover is required. If pressure falls more than 5%
below the nominal switch setpoint, then contact chattering is not a concern and switch actuation and swapover are ensured to occur before the required low suction swapover pressure is reached. Therefore, this information can be translated into a +/- 5% of span uncertainty during a seismic event. This seismic effect will be considered as a bias.
SErs = +/-5.0% of span (Reference P)
Reference F states that all switches demonstrated an ability to perform their safety function following exposure to 5 times Operating Basis Earthquakes and 1 Safe Shutdown Earthquake. In the qualification test, five pressure switches similar to the switches used in this calculation were tested. Their model and serial numbers and span are as follows:
Model # Serial # Span 12TA-W4-U8-CIA-JJTTNQ 92-6-7022 5.5 PSIG 12TA-W4-U8-C1A-JJTTNQ 92-6-7023 5.5 PSIG 5TA-B45-U8-C1A-JJTTNQ 92-6-7026 505 PSIG 5TA-B45-U8-C1A-JJTTNQ 92-6-7026 505 PSIG 9RT-B45-U8-C2A-JJTTNQ 92-6-7041 1550 PSIG The worst case shift in setpoint from pre-seismic testing to post-seismic testing for the above five switches occurred with serial number 92-6-7023. The change in setpoint was -0.18 psig or -3.27% of span. All other pressure switch setpoints listed above changed less than 3.27% of span. Therefore, an uncertainty of +/-3.5% of calibrated span will be used for post-seismic uncertainty in order to adequately encompass all the post-seismic test results. Due to the small sample tested and the non-normal distribution of the sample results, this post-seismic term will be considered as a bias.
SEpost-sei, = +/-3.5% of span Reference Accuracy (A)
The vendor provides a Repeatability value of +/-1% of span (Attachment 3).
(A A = +/-1.0% of span
Attachment 6 MCC-1 210.04-00-0043 Page 6 of 11 Drift (D)
The vendor provides a Drift value of +/-2.5% of span for a span of 12 months (Attachment 3).
The Drift value will be treated as a random and independent uncertainty for a given time interval (Reference S). Drift will be determined for a duration of 22.5 months (18 months +/-25%).
Static Pressure Effect (SPE)
SPE = N/A Temperature Effect (TE)
This is a random, independent term based on variations of temperature from initial calibration temperature to worst case operating temperature. The vendor provides the following equation for evaluating temperature effects for a pressure switch with a vented housing (Attachment 3):
TE = +/- (setpoint + waterleg) x 0.0003 x [(Tf- Ti) / 1F]
For ease of calculation, the limiting, corrected setpoint of 11.89 psig will be used as the bounding setpoint for the Technical Specifications related pressure switches. For the ELAP related pressure switches, the bounding, corrected setpoint of 7.58 psig will be used (Reference N).
Process Measurement Allowance (PMA)
The change in process density as a result of temperature variation of the process fluid is calculated based on the corrected setpoint of the pressure switches. For the ELAP switches, the process temperature
( during calibration of the pressure switches is assumed to be equivalent to an ambient calibration temperature of either 60OF or 105 0 F (Reference R). The extreme process temperatures will be assumed to be either 148OF or 45OF for the ELAP related switches (Reference T & H). For the Technical Specifications switches, the calibration temperature will be the same, either 60OF or 1050 F (Reference R) while the extreme process temperatures are assumed to be within 120OF and 45OF (Reference H). The density variations will be treated as a bias (PMAdensjt). Lower density will produce a lower pressure which raises the effective setpoint of the switch in the positive direction. Therefore, a decreasing density will produce a positive bias while an increasing density will produce a negative bias.
PMAdjensity = [(pi - pf) / pi] x (corrected setpoint)
The uncertainty of the waterleg measurement of +/-3 inches (Assumption B) will also be treated as a bidirectional bias (PMA 0teg).
PMAate = +/- [3inH 2O x (1 psi/27.68inH 20)]
Measurement and Test Equipment (MTE)
Calibration procedures state the types of measuring & test equipment to be used when calibrating the instrument loops. The pressure switches will use a hand pump, and pressure indicator capable of measuring 0 to 50 psig (typically a Mensor 15000 digital pressure gauge). The pressure switches will have a digital multimeter to monitor contact output. The uncertainty associated with the digital multimeter monitoring contact output is negligible due to the definitiveness of the contact state based on resistance.
The Mensor 15000 & 11900 has an uncertainty of +/-0.08% range at temperature zone 2 (Reference R).
MTE = +/-0.08% x (50 psig/1 5 psig)
Calibration/Setting Tolerance (CTE)
CTE is considered to be equivalent to the pressure switch Reference Accuracy (A).
CTE = +/-1.0% of span
Attachment 6 MCC-1210.04-00-0043 Page 7 of 11 Allowable Value (AV)
An AV for the eight Tech Specs related pressure switches will be determined per Reference S.
AV = AL +/- [(TLU - Biases)' - RUT-CAL1'+/- Biases Analytical Limit (AL)
AL is determined by subtracting the largest magnitude of uncertainty from the setpoint without waterleg.
Waterleg is disregarded in this step but will be added to the calibration procedure to ensure proper calibration.
AL = setpoint - TLU Tested Uncertainties (RUT-cAL)
RUT-CAL includes the uncertainty associated with the portion of the loop tested and for the desired interval.
RUT-CAL = (A2 + CTE 2 + MTE2 + D2+ TE2)'I As-Found Tolerances (AFT) per TSTF-493 The As-Found Tolerance (AFT) is the allowance that the channel must be within when initially inspected prior to calibration. This allowance ensures that the channel will be capable of tripping prior to reaching the Analytical Limit (AL).
AFT = +/- (A2 + D2 + MTE2)"'1 As-Left Tolerances (ALT) per TSTF-493 The As-Left Tolerance (ALT) is the acceptable setting variation/tolerance about the setpoint that technicians may leave the setting following calibration.
2 ALT = + (A + MTE2)/A Rev.
5
Attachment 6 MCC-1 210.04-00-0043 Page 8 of 11 Body of Calculation:
Value Value Uncertainty Terminology Description ( an) (slg) Notes
(%span) (psig)
Reference Accuracy (A) 1.0 %span 0.15 psig press switch adjustable range from 1 to 16 pslg 22.f month., x 2.5% 342 % 051
- extrapolated 12 months drift Drift (0) V 12months 2 . 0 spn . p value for 22.5 months.
Resolution (RES) NIA N1A Static Pressure Effect (SPE) N/A N/A Temperature Effect (TE) f (3.5psig+ 4.08psig)x 0.0003x (148'F - 60*F 1.33% span 0.20pslg BoundingTE (Reference R&T)
ELAP Related Switches 1F ) 1.33 s 0 B i ( n Temperature Effect (TE) for 'FUF) 12((2 Tech Specs Related Switches . 1.43% span 0.21 psig Sounding TE (Reference R&H)
Calibration Tolerance (CTE) 1.0 % span 0.15 psig Equivalent to A easurement &Test 0 50psg 0.08% M&TE span of 50 psig Equipment (M&TE) Total 0.0i x 5apsig 0. converted to-span of0 5 psig 15 prig Uncertainty Power Supply Effect (PSE) N/A N/A Environmental Aflownace (EA) N/A NIA Seismic Effect (SE.I) 5.0 % span 0.75 psig +/-Bias Seismic Effect (SEpOd) 3.5 % span 0.53 psig iBias Process Measurement (62.363-61.231" (3.5psig+4.08psig) 0.92% span 6001to Allowance (+PMA,,~,t) for l0.92 density change from0.14Fto ELAP Related Press. Switches 62363 ) 5psig )4F (Reference R & T)
!i Process Measurement A-lowance ,I(-PM4.r,,)
wncX-ivntyfo (61.927-62418 1 3.5psig+4.08psdntc
.0.40 9)L L2 % span -0.06 palg 0 45 F chenge density gf from R105°Fto (Reference &T 61L927 5psig(
ELAP Related Press. Switches Process Measurement Aflowance (4PMd.,,)for 62.363- 61.710) (7.0psig + 4.89psig 0.83%span 0.12 pg d 0
Tech. Specs. Related Press. I,' 62.363 " Spsig ) 120 F (Reference R & H)
Switches Process Msasurement Allowance (-PMAd.,,t) for 61.927 - 62.418 (7.Opsig + 4.89psig -0.63 %span -0.09 paig densitychange from 105*F to Tech. Specs. Related Press. t. 61.927 I Spsig spn-.9p~ 45OF (Reference R & H)
Switches Process Measurement 3HOx ( Ipsi Allowance (iPMA,...) L,27.61ifOJ 0.72 % span 0.11 psIg +3" waterleg tolerance
/
Attachment 6 MCC-1210.04-00-0043 Page 9 of 11 Total Loop Uncertainty(TLU) for ELAP Related Pressure Switches
+TLUn. !iA + D' + TE' + CTEI + MTE' + PMlA, + PMA_ 5.59 % span 0.84 psig
-TLU~n - VA' + D'+TE'+CTE 2 +T -PMA.* -PMA -5.07% span -0.76 psig
+TLU VA' + D'+ W+ CTE' + M ' + PMAv + PMA_ + SE 10.59 % span 1.59 Using Bounding +/-1.63 Allowable T +TLU (Reference A)
-'FLU==. - VA,4 D+ TE+ CTE i + MTE' - PMA -PMA ,-*l - SE,, -10.07% span -1.51pslg
+TLUI.-i. V,,lA'+D'+ TE1+CT7 A+MWT + PMA,,, + PMA,,M, +SSE,. 9.09 %span 1.36 psig
-TLUpo"t...j - VA2+ D'+TEM' +CTE' .MTE' -PMAI -PMA.** -SE_* -8.57%span -1.29psig Total Loop Uncertainty (TLU) for Technical Specifications Pressure Switches Rev.
5
+TLU- VA' +D'+TE'+CTE'+MTEW+PMA.,
+ ,+PMA. , 5.53 % span 0.83 psig
-TLUor - JA' +D' +TE' +CTE' +MTE' -PMA_, - PMA-,, -5.33 %span -0.80 psig
.Using Bounding +/-11.63 Allowable
+TLU.. VA:+Di+TEI+C7E2+MThý+PMA , +PMA_ý +SE,_, 10.53%span 1.58 psig TLU (Reference A)
-TLU..i -VA 2 +D' +TEI+CTM +MTM2-PMA,_, -PMA_,, -SEd -10.33%span -1.55psig
+TLtUP.di. .IA'+D'+TE'+CTE'+MTE '+PMA_, +PMA,. +SE, 9.03%span 1.35 psig V-A'+D ' .TE'+ CTE' +MTE' -PMA,,_,, -PMA _, .- SE _= -8.83% span -1.32psig Limits for Technical Specifications Pressure Switches n- NA 5.37 psig Allowable TLU = +/-1.63 psig Uft (AL)
Analytical 7.0 psig - TLUAIIb. (Reference A)
Analytical ULmit(AL) 8.0psig - TLUAIO.tbtN WA 6.37 psig AL for 2CAPS500215350 2 2 2
+TLU.i. excluding Biases 4A2 +D + TE + CTE + MTE 3.98 % span 0.60 psig 2 2 2 Tested Uncertainties (RUTAL)O VA + D' + TE + CTE + MTE 3.98 % span 0.60 psig Biases Associated wl +TLUi. PMA , + PMA _,,, + SE 6.55 % span 0.98 psag 1
Alowable Value(AV) AL+/-[: (7U-BLase .s)-RU +/-+Bies WA 6.35 psig Rounded up in safe direction to 6.5 psig Alliowable Value (A%ý AL+/-F (TLU-Biase ..R U +/-Biamsl MA 7.35 si 7.5 psig AV for
- pI 2CAPS500215350 i.
(
Attachment 6 MCC-1210.04-00-0043 Page 10 of 11 Margin & Setpoint Evaluation for All Pmssure Switches 4hI Normal Operating Pressure = 65 psig Pressure Switches 2CAPS5002/5350 Potential Early Trip
= 9.63 psig
- +TLU= 1.63 psig Potential EarlyTrip
=8.63 psig +AFr=8.5 psig psig8.63
=
Trip Early Potential
+ALT 8.16 psig NTS 8.0 psig
- TLU =1.63 psig - -AL.T=7.84 psig
t .------------
+AFT=7.5psig AV =-AFTr= 7.5 psig 8
. ALT= 7.16 psig - -TLU= 1.63 psig 11 NTS 7.0 psig
.------------. ALT 6.84 psig I- TechSpecAL IAV =-AFr= 6.5 psig
= 6.37 psig
-TLU= -1.63 psig -
K V___
Tech SpecAt= 5.37 pslg =
Potential Early ELAPTrip
+TLU=1.63 psig C
NTS = 3.5 psig
-flU =-L63 psig - J 1~~_______ ElEAPALi87-psig
Attachment 6 MCC-1 210.04-00-0043 Page 11 of 11 Summary:
The setpoints provide sufficient margin such that the Analytical Limit (AL) will not be exceeded. Sufficient margin exists between the two setpoints so that overlapping is avoided. These settings ensure that the Technical Specifications related pressure switches will actuate before actuation of an ELAP related pressure switch, and satisfies the instrument uncertainty criterion of +/-1.63 psig (Reference A).
ELAP Related Pressure Switches Setpoint 3.50 psig
+TLU +1.63 psig Rev.
-TLU -1.63 psig I5 TS Related Pressure Switches Setpoint 7.0 psig
+TLU +1.63 psig Rev.
5s
-TLU -1.63 psig AFT (TSTF-493) +/-0.50 psig ALT (TSTF-493) +/-0.16 psig AV 6.50 psig AL 5.37 psig l Switches 2CAPS5002/5350 Setpoint 8.0 psig
+TLU +1.63 psig Rev.
I5
-TLU -1.63 psig AFT (TSTF-493) +/-0.50 psig ALT (TSTF-493) +/-0.16 psig AV 7.50 psig AL 6.37 psig