ML20217B592
| ML20217B592 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 03/06/1998 |
| From: | Mursky M COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20217B575 | List: |
| References | |
| L-001443, L-001443-R01, L-1443, L-1443-R1, NUDOCS 9804230090 | |
| Download: ML20217B592 (69) | |
Text
Exhibit C NEP-12-02 Rsvision 5
_l CALCULATION TITLE PAGE mop p, (
Calculation No. L-001443 DESCRIPTION CODE: 103 (setnoint/settinas/Marain) 1TITLE:
LaSalle DISCIPLINE CODE:
SYSTEM CODE:
Reactor Water Cleanuo Hiah Flow isolation Error Analysis 1 (instrumentation a contron G33 X Safety Related Augmented Quality Non-Safety Related REFERENCE NUMBERS Type Number Type Number COMPONENT EPN : DOCUMENT NUMBERS:
EPN Compt Type Doc Type /Sub Type Document Number 1-G33-N504 Venturi Flow Nozzle 1-G33-N041 A.B AP Transmitter 1-G33-N609A.B Trio Unit REMARKS:
~
l REVISING APPROVED DATE lREV.
NO. ORGANIZATION , PR NT/Sg l 0 Comed // N![kkvhk[ 11/20/97 l 1 Comed tu,.krimJaL,,[Wppell4.,,, 3/g/9p g a wu ., .
I I
- B842aggg ggggg;3 P
Exhibit C NEP-12-02 Rcvi:icn 5 COMMONWEALTH EDISON COMPANY
^
I CALCULATION REVISION PAGE
~ CALCULATION NO. L-001443 PAGE NO. 2 of 56 REVISION SUMMARIES REV: 0 REVISION
SUMMARY
Initial Issue ELECTRONIC CALCULATION DATA FILES REVISED:
l (Program Name, Version, File name ext / size /date/ hour: min)
Word Perfect 6.1 File Name: L 4p 144d . 6R0 / 215KB/11/22 / 97 / 7 : 59 AM PREPARED BY: VIK b ,
DATE:11-20-97 rint ign'[
REVIEWED BY: Joe Baa -
DATE: 11-20-97 l Print /Sion l l
Type of Review l B Detailed O Alternate O Test l DO ANY ASSUMPTIONS IN THIS CALCULATION REQUIRE LATER VERIFICATION B YES O NO Tracked by: l k REV: 1 REVISJON
SUMMARY
Determine Nominal Trip setpoint (NTSP) and Allowable Value (AV) based on the revise Analytical Limit of 650 GPM supported by S&L Design Information Transmittal LAS-ENDIT-0536, Upgrade 2, dated 03/04/98. In addition, this calculation performs transmitter scaling for high line pressure correction. An unverified assumption 5.7 has been deleted from the calculation.
ELECTRONIC CALCULATION DATA FILES REVISED:
(Program Name, Version, File name ext / size /date/ hour: min) uly Adect bl, SOE AWf L - CC 14 4 3 - 21/ 2 27 '2 K3 / 3 I C l T9 j g .y M PREPARED BY: Vikram R. Shah a DATE: ON# I Print / Sign C "' "1 -
REVIEWED BY: Bob Fredricksen DATE:
Print /Sion ^26- '~ " '
Type of Review
, 2 Detailed O Alternate O Test DO ANY ASSUMPTIONS IN THIS CALCULATION REQUIRE LATER VERIFICATION O YES a NO 1Trackedby:
Exhibit D NEP-12-02 R2vizi::n S COMMONWEALTH EDISON COMPANY p CALCULATION TABLE OF CONTENTS lN CALCULATION NO. L-001443 REV. NO. 1 PAGE NO. 3 OF 56 DESCRIPTION PAGE NO. SUB-PAGE NO.
TITLE PAGE 1 REVISION
SUMMARY
2 TABLE OF CONTENTS 3 CALCULATION l SECTION 1.0 PURPOSE and OBJECTIVE 5 SECTION 2.0 METHODOLOGY and ACCEPTANCE 6 i CRITERIA l SECTION
3.0 REFERENCES
7 SECTION 4.0 DESIGN INPUTS 9 SECTION 5.0 ASSUMPTIONS 10 SECTION 6.0 INSTRUMENT CHANNEL 11 l CONFIGURATION SECTION 7.0 PROCESS PARAMETERS 11
{ }SECTION 8.0 LOOP ELEMENT DATA 12 SECTION,'9.O CALIBRATION INSTRUMENT DATA 16 SECTION 10.0 CALIBRATION PROCEDURE DATA 22 SECTION 11.0 MODULE ERRORS 23 i .
SECTION 12.0 INSTRUMENT CHANNEL TOTAL 51 ERROR SECTICN 13.0 ERROR ANALYSIS 52 SECTION 14.O TRANSMITTER SCALING 55 l
SECTION 15.0 ERROR ANALYSIS
SUMMARY
& 56 CONCLUSIONS
Exhibh D NEP-12-02 R:vizi:n 5 j l
COMMONWEALTH EDISON COMPANY A l N,,Y CALCULATION TABLE OF CONTENTS (continued) (
CALCULATION NO. L-001443 REV. NO. 1 PAGE NO. 4 OF 56 l
)
DESCRIPTION PAGE NO. SUB-PAGE NO.
ATTACHMENTS A Telecon between V. Shah of Signals & A-1 Safeguards, Inc. and B. Bejlovec of CECO, regarding maintenance of Rosemount transmitter static pressure correction at LaSalle County Station, dated 9-9-94.
B Correspondence from T.J. Layer, B-1 thru B-5 Rosemount App. Eng., to E.
Kaczmarski, CECO, regarding
" Pressure Transmitter Performance Specifications", dated 6/24/91. i
~ ~
C Telecon between N. Archambo of Bechtel and T. Layer of Rosemount, clarifying the accuracy specifica-tions for the Rosemount 710DU Trip / Calibration System, dated 6 93.
D Letter from T. Layer of Rosemount, Inc. to V. Shah of Signals & D-1 thru D-2 9efeguards, Inc., clarifying specifications for Model 510DU/710DU Trip Unit and Model 1154 Series H l Transmitter, dated 9/30/93.
E -
Sargent & Lundy Design Information E-1 thru E-2 l Transmittal LAS-ENDIT-0536, Upgrade l 0, dated 11/10/97, regarding, l "Setpoint With New Flow Transmitter i and Trip Unit in RWCU Recire Line."
l F Sargent & Lundy Design Information F-1 Transmittal LAS-ENDIT-0536, Upgrade 2, dated 03/04/98, regarding,
" Revise Analytical Limit for RWCU high flow monitoring instrumentation (trip unit instrument numbers 1G33-N609A and B) setpoint calculation" l k
i Exhibit E NEP-12-02 R:vilisn 5
) COMMONWEALTH EDISON COMPANY J l
CALCULATION NO. L-001443 PAGE 5 of 56 1.0 l PURPOSE / OBJECTIVE OF CALCULATION j The purpose of this calculation is to determine the Instrument setpoint and Allowable Value, for the instrument loops that initiate an inboard and outboard logic channel trip upon detection of high flow.
This calculation is performed to support DCP 9700532, which adds high flow break detection instrumentation into RWCU isolation 1 logic. This logic will detect high energy line break.
The calculation evaluates normal operating and accident environ-l mental conditions for the following instruments:
1-G33-N504 1-G33-N041A,B 1-G33-N609A,B l
i u) ,
I l
\ .
- +
l 1
O REVISION NO. 0 1
Exhibit E NEP-12 02 Rsvisi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 6 of 56 2.O METHODOLOGY AND ACCEPTANCE CRITERIA 2.1 Methodology The methodology used for this calculation is presented in the NES-EIC-20.04, " Analysis Of Instrument Channel Setpoint Error And Instrument Loop Accuracy", Rev. 0 (References 3.2).
2.2 Acceptance Criteria The acceptance criteria for this calculacion is based on the Reference 3.2 as follows:
(1) New determined setpoint provides 95/95 assurances that the Analytical Limit will not be violated, (2) New determined setpoint provides reasonable assurance that spurious actuation will not occur during normal operation.
C)
L 0
O REVISION NO. 0 1
Exhibh E NEP-1242 RIvizi:n S l COMMONWEALTH EDISON COMPANY ,
i CALCULATION NO. L-001443 PAGE 7 of 56 REFERENCES 3.1 ISA-S67.04, Part 1, "Setpoints for Nuclear Safety Related Instruments", Approved August 24, 1995 ISA-RP67.04-Part II-1994, " Methodologies for the Determination of Setpoints for Nuclear Safety Related Instrumentation", Approved September 30, 1994 t
3.2 NES-EIC-20.04, " Analysis of Instrument Channel Setpoint Error And Instrument Loop Accuracy."
3.3 LaSalle Station UFSAR, Rev 6, EQ Zone Maps, Table 3.11-7, 8, 16, 17, dated April 1990.
3.4 LaSalle Station Procedures I
LIS-RT-106A (Rev. 0), " Unit 1 Reactor Water Cleanup High Inlet Differential Flow Division 1 Isolation Calibration".
LIS-RT-106B (Rev. 0), " Unit 1 Reactor Water Cleanup High Inlet Differential Flow Division 2 Isolation Calibration".
, l l 3.5 Rosemount Operational Manual 4471-1, Rev. A, "Model 710DU Trip / Calibration System", VETIP J-0756 Rosemount Product Data Sheet 2471, Model 710DU Trip / Calibration System, Rev. 4/87.
- 3. 6 Rosemount Instruction Manual 4631, March 1996, "Model 1154 Series l H Alphaline Pressure Transmitters for Nuclear Service", VETIP J-0223 3.7 Pipe Fitters Manual - Tube Turns, Weldings, Fittings, and Piping Components, 1981 3.8 Commonwealth Edison Company Calculation No. NED-I-EIC-0255,
" Measurement & Test Equipment Accuracy Calculation For Use with CECO BWRs", Rev. O, CHRON # 208597.
3.9 Commonwealth Edison Company Instrument Database (EWCS) for the following instruments:
1G33-N504 l l
l
()g l
REVISION NO. 0 1 1
Exhibh E NEP-1242 Rsvizi:n 5 COMMONWEALTH EDISON COMPANY I
l ICALCULATION NO. L-001443 PAGE 8 of 56 3.10 Sargent & Lundy P&ID/C&I drawings will revise per ECNs 001368E (ESSI) and 001369E (ESS2) l Drwa # Sht# Revision Dated M-2097 2 G 01/15/86 3.11 ANSI /AMSE PTC 6 Report, " Guidance for Measurement Uncertainty in Performance Tests of Steam Turbines", Tables 4.10, 4.11, Figures 4.5, 4.6, 4.7, 4.8 and 4.9, dated 1985.
! 3.12 Sargent & Lundy single line piping drawings depicting "as-built" field arrangements Drwa # Sht# Revision Dated M-840 8 X 07/09/96 3.15 Vendor Drawing 73927-1, -21, Rev. 1. J2961 Specification.
3.16 ASME Steam Tables, 6* Edition, dated 1997 3.17 Instrument Engineers Handbook, Process Measurement and Analysis
( ',) hy Bela G. Liptak, Third edison.
s-3.18 Sargent & Lundy Report SL-4493, " Final Report on Insulation Resistance and Its Presumed Effects on Circuit Accuracy LaSalle County Station", dated October 12, 1988.
3,.19 Sargent & Lundy Calculation CID-MISC-01, " Instrument Loop Evaluation for Parasitic Resistance", Rev. O, dated 2/3/87.
I p
REVISION NO. 0 1
ExhibM E i
l NEP-1242 Rsvili:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 9 of 56 4.0 DESIGN INPUTS 4.1 Telecon between V. Shah of Signals & Safeguards, Inc. and B.
Bejlovec of CECO, regarding maintenance of Rosemount transmitter static pressure correction at LaSalle County Station, dated 9 94. (.ATTACHMENT A) l 4.2 Correspondence from T.J. Layer, Rosemount App. Eng., to E.
Kaczmarski, CECO, regarding " Pressure Transmitter Performance Specifications", dated 6/24/91. (ATTACHMENT B) 4.3 Telecon between N. Archambo of Bechtel and T. Layer of Rosemount, clarifying the accuracy specifications for the Rosemount 710DU Trip / Calibration System, dated 6-16-93.
(ATTACHMENT C) 4.4 Letter from T. Layer of Rosemount, Inc. to V. Shah of Signals &
Safeguards, Inc., clarifying specifications for Model 510DU/710DU Trip Unit and Model 1154 Series H Transmitter, dated 9/30/93.
(ATTACHMENT D) 4.5 Sargent & Lundy Design Information Transmittal LAS-ENDIT-0536, Upgrade 0, dated 11/10/97, regarding, "Setpoint With New Flow j (f~)
Transmitter and Trip Unit in RWCU Recirc Line." (ATTACHMENT E)
, This Design Input provides following information:
1 -
Process Calibration Rance = 0 to 700" GPM corresponding to O to 200" W.C.
Calibration Range = 18 months (Every Refueling Outage)
In addition, it also provides Manufacturer, Model no, EQ Zone, l
l and instrument Location.
4.6 Sargent & Lundy Design Information Transmittal LAS-ENDIT-0536, Upgrade 2, dated 03/04/98, regarding, " Revise Analytical Limit for RWCU high flow monitoring instrumentation (trip unit ]
- instrument numbers 1G33-N609A and B) setpoint calculation" l
l (ATTACHMENT F)
This Design Input provides following information:
Analytical Limit = 650 GPM 1
C/
1 REVISION NO. 0 1
Exhibh E NEP-1242 R:vizi:n 5 COMMONWEALTH EDISON COMPANY
/~N
(,j CALCULATION NO. L-001443 PAGE 10 of 56 l 5.0 ASSUMPTIONS 5.1 Published instrument and M&TE vendor specifications are considered to be 2 sigma valuer unless specific information is available to indicate otherwise.
5.2 Humidity, power supply and ambient pressure errors have been incorporated when provided by the manufacturer. Otherwise, these errors are assumed to be included within the manufacturer's reference accuracy specification.
5.3 In accordance with Reference 3.8, it is assumed that the M&TE listed in Section 9.0 is calibrated to the required manufacturer's recommendations and within the manufacturer's required environmental conditions.
5.4 Comed LaSalle Technical Surveillance Procedure LTS-1000-44,
" General Area Reactor building Temperature Surveillance."- data collection from 03/88 thru 12/89. Based on the data reviewed from LTS-1000-44, the Minimum normal temperature in the reactor building will be assumed to be 60*F.
p) 5.5 Per Reference 3.2, an additional flow uncertainty of 0.5% span
(
will be used to account for modelling and process uncertainty
.(i . e . Pressure & temperature Spikes, Pressure loss, and head
. loss) of the flow nozzle.
l 5.6 As stated in Note 1 of ANSI /ASME PTC 6 Report -
1985, the overall uncertainty value of the flow element is acceptable for flow blements in service for less than six months. Purther, Section 4.17 of this report states that the base uncertainty for flow elements in service for more than six months is likely to change much less with time than indicated for the initial six months.
It is therefore assumed that any additional error due to damage or deposits on the flow element will have a negligible impact on the overall loop uncertainty. Since the flow element has been in service greater than six months, for conservatism, the largest Group 2 base uncertainty from Table 4.10 will be used to evaluate }
the overall flow element error for flow nozzle. i Assumptions 5.1 thru 5.6 do not require verification. These assumptions are based on the industry pr'actice and engineering judgement.
5.7 DELETED l
(~
REVISION NO. 0 1 j l
Exhibit E NEP-12-02 Ravi2iin 5 COMMONWEALTH EDISON COMPANY m
_ CALCULATION NO. L-001443 PAGE 11 of 56 6.0 INSTRUMENT CHANNEL CONFIGURATION Per Reference 3.10, the Instrument Loops each consist. of a flow element, differential pressure transmitter, and master trip unit.
The Instrument Loop initiates RWCU isolation when RWCU inlet flow and the corresponding differential pressure increases to the calibrated setpoint.
i 7.0 PROCESS PARAMETERS l
From References 3.9, For 1G33-N504 (RWCU Inlet Flow)
Fluid: Water Maximum Process Pressure: 1025 PSIG 1
l Maximum Process Temperature: 550*F 1p\
l\
Nonnal Process Pressure: 1005 PSIG l
, Minimum Process Temperature: 533 F i
1 .
l l
l
.f~
d REVISION NO. 0 1 1
ExhibM E NEP-1242 1 R;vizi:n S COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 12 of 56 8.0 LOOP ELEMENT DATA 8.1 Module 1, Venturi Flow Nozzle 1G33-N504 (RWCU System Inlet Flow) (Reference 3.9, and 3.15) ;
Manufacturer: BIF Normal Flow 352 GPM DP @ Design Flow: 101.62" W.C. @ 500 GPM (This.does not include the zero pressure static shift compensation)
Design Temperature: 575 F Design Pressure: 1250 PSIG Pipe Size / Schedule: 6" Diameter, 120 Throat Diameter (d): 2.438 inches Pipe Diameter (D): 4.876 inches (Reference 3.7)
Beta Ratio (d/D): 0.50 Per Reference 3.12, The only upstream and downstream obstructions are single 90 bends. Upstream and downstream straight pipe lengths are as fol-
) lows.
.' Upstream pipe length = 82.375 inches Downstream pipe length = 42.0 inches O
REVISION NO. 0 1
l Exhibit E NEP 12-02 R:virisn S COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 13 of 56 8.2 Module 2, Rosemount Model 1154DH5R Differential Pressure Transmitter (Reference 3.15) 1G33-N041A, B From Reference 3.6, Upper Range Limit (URL) 0-750" W.C.
Accuracy [3c] 20.25% calibrated span (Includes effects of Linearity, Hysteresis, and Repeatability)
Temperature Effect [3c] :(0.75% URL + 0.50% span)/100 F between 40*F and 200*F (Design input 4.4)
Static Pressure Effect Zero [30] 20.2% URL/1000 psi Span [3c] 10.5% reading /1000 psi Overpressure Limits [2c] 21% URL (Zero shift aftFr 2000 PSI)
Power Supply Effect
) ~
<0.005% output span per volt
. Drift [2c] 20.2% URL for 30 months Radiation Effect [2c] : (0.5% URL + 1% span) after 55 Mreds TID 2 (0.75% URL + 1% span) after 110 Mreds TID gamma radiation exposure.
Seismic Effect [2c] 20.5%'URL with Horizontal ZPA of 8.5g's, and Vertical ZPA of 5.2g's l
REVISION NO. 0 1
Exhibit E NEP-12-02 Rsvizisn 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 14 of 56 Environmental Data for Transmitter Location Transmitter Locations, Reactor Building (Design Input 4.5):
Switch Tact Numbers Panel Numbel EO Zone 1G33-N041A 1H22-P010 H4A 1G33-N041B Locally mounted H4A Normal Operating Conditions for Environmental Zone H4A (Reference 3.3, Assumption 5.4)
Temperature: 60*F-118 F Pressure: -0.4" W.G.
Radiation: 2 x 10 6Rads (40-Year Dose)
Relative Humidity: 25 - 35%
Accident Conditions for Environmental Zone H4A (Reference 3.3, Assumption 5.4) b)
b Temperature: 60 F-145'F
." Pressure: -0.25" W.G.
Radiation: 1 x 10 7Rads (40-Year Dose)
~
. Relative Humidity: 20 - 95%
I J~
REVISION NO. 0 1
ExhibH E NEP-1242 R:vizi n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 15 of 56 Module 3 Rosemount Model 710DU - MTU (Reference 3.15) 1G33-N609A,B l From References 3.5, Design Inputs 4.2, 4.3, and 4.4 Repeatability (Normal) :0.13%(SPAN) (60*F to 90 F)for 6 months
- 0.20% (SPAN) /100'Ffor 6 months Repeatability (Accident) :0.40%(SPAN)for 6 months Radiation Effect None Within Limits Stated Below Seismic Effect None Within Limits Stated Below Temperature Effect Included in Repeatability Errors (Design Input 4.3)
Stability Included in Repeatability Errors for 6 months (Design Input 4.3)
Temperature Limits 60'F to 90 F (; Normal) 160*F (24 hrs, once/ year) i
{ ) 185 F (Accident for 6 hrs) 150 F (Accident for 8 hrs)
Humidity Limits 40-50% RH (Normal) 90% (24 hrs, once/ year) 90% (Accident for 14 hrs)
~
Radiation Limits :105 RADS (air) 20 yr TID (normal) 2 x 10 5 RADS 24 hr TID (Accident)
Seismic Limits (ZPA) 1.17 g OBE, 1.75 g SSE (During & Af ter)
Environmental Conditions (Reference 3.3) :
1 EQ Zone C1B, Auxiliary Electric Equipment Room Normal and Accident Conditions:
Maximum Temperature 80 F Minimum Temperature 72'F Pressure +0.25" W.G.
Humidity 45% RH Radiation 1.0 x 103 RADS (40 years)
,m v
REVISION NO. 0 1
ExhibM E NEP-1242 R;vizisn S COMMONWEALTH EDISON COMPANY I l
l CALCULATION NO. L-001443 PAGE 16 of 56 l
) 9.0 CALIBRATION INSTRUMENT DATA 9.1 Calibration Method l The following devices may potentially be used as measurement and 1
test equipment when performing calibrations on the devices within the subject instrument loop.
The Calibration Error for each module consists of three random components:
- M&TE Error (MTEg) present at input
- M&TE or Reading Error /Least Significant Digit (MTEg7 or RE/LSD) used to measure output Calibration Standard Accuracy (STD) which is negligible per Assumption 5.3 9.2 Transmitter Calibration (MTE2)
The transmitter is calibrated using a pressure gauge for MTE2 3 and a digital multimeter for MTE2 my.
') 9.1 Calibration Method .
1 From Reference 3.8, Manufacturer: Wallace & Tiernan
, Model: 62A-4C-0280 Range: l 0 to 280" W.C.
Calibrated Accuracy: : 0.50" W.C.
Minor Division: 0.5 PSIG Temp. Effect: : 0.1% Range /10 C referred to 25'C Pressure gauge calibration accuracy (CAMTE2) is the manufac-turer's reference accuracy, and is rounded up to nearest minor division.
CAMTE2 = 0.50" W.C.
Per Reference 3.8, the standard deviation of calibration accuracy (CAMTE2g,3 ) is CAMTE2/2. Therefore, CAMTE2 g ,3 =1 0.50" W.C. / 2 = 1 0.25" W.C.
O REVISION NO. 0 1
ExhibM E NEP-1242 R:visiin 5 l l
COMMONWEALTH EDISON COMPANY j CALCULATION NO. L-001443 PAGE 17 of 56 1 \
l The reading error of an analog gauge is given as % of the I l
smallest division on the gauge. From the data above, REMTE2 = (%) (0.50" W.C. ) = : 0.125" W.C.
The temperature error is a degradation of the specified accuracy l
and is not considered an additional random error. From the data above, TEMTE2 refers to 25'C.
Since the pressure transmitter input pressure is monitored at the transmitter, the temperature error is evaluated using the transmitter environment. From Section 8.2.1 the minimum tempera-ture at the transmitter location under normal operating condi-tions is 60*F ( 15 . 6'C) Therefore, AT m, = 15. 6*C - 2 5'C = 9.4 C From Section 8.2.1 the maximum temperature at the transmitter location under normal operating conditions is 118*F ( 4 7. 8'C) .
Therefore, AT ,, = 47.8 C - 25 C = 22. 8'C l I Therefore, AT,, is the maximum transmitter location temperature.
TEMTE2 = (0.1% FS/10*C) aT
=
[ (O . 001)- ( 2 8 0" W. C. ) /10'C] [22. 8 *C]
~
= - 0.63840" W.C.
Per Reference 3.8, the standard deviation of temperature effect (TEMTE2g,3 ) is TEMTE2/2. Therefore, l TEMTE2 g,3 =: 0.63840" W.C. /2
= . 0.31920" W.C.
Therefore, MTE2 g = [(CAMTE2 g,3 + TEMTE2g,3 ) 2 + (REMTE2)2 ) 0.5
= ((0.25" W.C.+ 0.31920" W.C.)2 + ( 0.12 5 " W . C . ) 2) o.5
=2 0.582764" W.C.
9.1.1 calibration Standard Error (STD1)
The error due to calibration accuracy of calibration equipment is REVISION NO. 0 1 l
Exhibit E NEP-12-02 Rsvizi:n 5 COMMONWEALTH EDISON COMPANY p
t'ALCULATION NO. L-001443 PAGE 18 of 56 assumed to be negligible (Reference 3.2). Therefore, STD1 = 0 9.1.2 Determination of Transmitter. Input Calibration Error Propagated through the Transmitter (CALI ,,p) p The M&TE error (: 0.582764" W.C.) was detennined in Section 9.1. The transfer function is determined in Section 11.1.1.
Therefore, MTEIp ,,, = [(MTE1)2 (dT/dP) 2) o.5
=
[(0.582764" W.C.)2 * (0. 0 8 mA/" W. C . ) 2) o.5
= 20.046621 mA 9.2.2 Digital Multimeter Error (MTE2my )
9.2.2.1 Digital Multimeter Error (MTE2m73 )
Per Reference 3.8, Manufacturer:
-) . Model:
Fluke 8500A Range: 10 Vdc (5% Digit Resolution)
From Section 8.2.1, the temperature range is 60 (15. 6*C) to 118 F
,( 4 7 . 8'C) . Reference 3.8 provides the following specifications:
Reference Accuracy (RA)- = 2(0.002%(RDG) + 1(digits))
Resolution (RES) = 0.0001 Vdc Temperature Effect (TE) =
- (0.0002%(RDG) + 0. 5 (digit) ) /
- C) ( AT)
AT = (47. 8 - 28. 0) 'C = 19.8'C At a reading of 5.0 Vdc MTE2 my , =
[(RA/2 + TE/2)2 + RES )2 o.5
=
2 [ (0. 0002 Vdc/2 + 0. 001188 Vdc/2) 2,(0. 0001 Vdc) 2) o.5
= 2 0.000701 Vdc REVISION NO. 0 1
Exhibh E NEP-1242 Rsvizi n S COMMONWEALTH EDISON COMPANY I CALCULATION NO. L-001443 PAGE 19 of 56 9.2.2.2 Digital Multimeter Error (MTE2anz) l Per Reference 3.8, Manufacturer: Fluke Model: 8500A Range: 10 Vdc (6% Digit Resolution)
From Section 8.2.1, the temperature range is 60 ( 15 . 6'C) to 118 F I (4 7. 8 T:) . Reference 3.8 provides the following specifications: l Reference Accuracy (RA) = :(0.002%(RDG) + 9(digits))
Resolution (RES) = 0.00001 Vdc Temperature Effect (TE) = : ( 0. 0002% ( RDG) + 0.5(digit))/ C) (oT) oT = (47. 8 - 28. 0) 'C = 19.8*C ;
At a reading of 5.0 Vdc
)
MTE2 mT2 = [(RA/2 + TE/2)2 + 2 RES )o.5
=
[ (0. 00019 Vdc/2 +0. 0002 97 Vdc/2 ) 2+ ( 0. 00 001 Vdc) 2) o.5
= 0.000244 Vdc
'{ } 9.2.2.3 Digital Multimeter Error (MTE2ag3) l . Per Reference 3.8, Manufacturer: Fluke Model: 8505A
,. Range: 10 Vdc (Normal Mode)
From Section 8.2.1, the temperature range is 60 (15 . 6 T:) to 118 F (4 7. 8 T:) Reference 3.8 provides the following specifications:
Reference Accuracy (RA) = :(0.0019%(RDG) + 8. 9 (digits) )
Resolution (RES) = 0.00001 Vdc Temperature Effect (TE) = : ( 0. 0002 % (RDG) + 0.5 (digit) ) / C) ( AT)
AT = (47.8 - 28.0) C = 19.8 C l At a reading of 5.0 Vdc 1
MTE2 auT3 =
[(RA/2 + TE/2)2 + RES )2 o.5
=
{ (0. 000184Vdc/2+0. 000297 Vdc/2) 2+ (0. 00001 Vdc) 2) o.5
= 2 0.000241 Vdc
.r e
\m.
REVISION NO. 0 1
Exhibit E NEP-12-02 Rzvisi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 20 of 56 9.2.2.4 Digital Multimeter Error (MTE2m74 )
Per Reference 3.8, Manufacturer: Fluke Model: 8505A Range: 10 Vdc (Average Mode)
From Section 8.2.1, the temperature range is 60 ( 15 . 6 *C) to 118 F (4 7. 8'C) . Reference 3.8 provides the following specifications:
Reference Accuracy (RA) = 1(O.00152%(RDG) + 69(digits))
Resolution (RES) = 0.000001 Vdc Temperature Effect (TE) =
e (O . 0002% (RDG) + 5 (digit) ) / C) ( AT)
AT = (47.8 - 28.0) C = 19.8'C At a reading of 5.0 Vdc MTE2 ,74 = 1[(RA/2 + TE/2)2 + 2 RES )o.5
=
{ (0. 000145Vdc/2+0. 000297 Vdc/2) 2+ (0. 000001 Vdc) 2] o.5
= 0.000221 Vdc 9.2.2'.5 Digital Multimeter Error (MTE2w,5 )
Per Reference 3.8,
. Manufacturer: Fluke Model: 8600A Range: 20 Vdc From Section 8.2.1, the temperature range is 60 (15. 6*C) to 118 F
( 4 7 . 8'C) Reference 3.8 provides the folloving specifications:
Reference Accuracy (RA) = 2(0.02%(RDG) + 0. 005 % (RNG) )
Resolution (RES) = 0.001 Vdc Temperature Effect (TE) = 1 ( O . 001% (RDG) + 0. 0005 % (RNG) ) /
- C) ( AT)
AT = (47. 8 - 35.0) *C = 12.8'C At a reading of 5.0 Vdc MTE2 mT5 = :[(RA/2 + TE/2)2 + RES]o.5 2
=
1 [ (0. 002Vdc/2 +0. 00192 Vdc/2) 2+ ( 0. 001 Vdc)2]o.5
-1 0.00220 Vdc L
REVISION NO. 0 1
Exhibit E '
NEP-12-02 R:vizi:n 5 COMMONWEALTH EDISON COMPANY l
l CALCULATION NO. L-001443 PAGE 21 of 56 l 9.2.2.6 Digital Multimeter Error (MTE2mg)
Per Reference 3.8, Manufacturer: Fluke Model: 8050A Range: 20 Vdc From Section 8.2.1, the temperature range is 60 (15 . 6'C) to 118 F l (4 7. 8'C) . Reference 3.8 provides the following specifications: !
Reference Accuracy (RA) = 2(0.03%(RDG) + 2(digits))
Resolution (RES) = 0.001 Vdc Temperature Effect (TE) = (0.1( Accuracy Spec) / C) ( AT) l AT = (47. 8 - 28.0) *C = 19.8 C At a reading of 5.0 Vdc l
MTE2 mg = 2((RA/2 + TE/2)2 + RES]O5 2
= 2 ( (0. 0035Vdc/2+ 0. 00035 Vdc/2) 2+ (O . 001 Vdc) 2 35 0
' Oy = 2 0.002169 Vdc 9.2 .2'.6 Worst Case MTE2 my l The greatest DMM error occurs with the Fluke 8600A. Therefore, j ,
, MTE2 m7 = 2 0.00220 Vdc Convert MTE2w,from 1 to 5 Vdc to 4 to 20mA by dividing with 2500 resistor, j MTE2 ,7 = z (0.00220 Vdc/2500) l
= 1 0.0088 mA l 9.2.2.7 Calibration Standard Error (STD2)
The error due to calibration accuracy of calibration equipment is assumed to be negligible (Reference 3.2). Therefore, STD2 = 0 9.2.2.8 Detertnination of CAL 2 i
CAL 2 =
((MTEIpcop) 2 + (MTE2 ,7)2 + (STD1)2 + (STD2)2)w
= [ 4 621 mA) 2+ (0. 0088 mA) 2+ (0) 2 +(0)2 % 3
(
( REVISION NO. 0 1
Exhibh E NEP-1242 Rzvizi:n 5 i
COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 22 of 56 l
10.0 CALIBRATION PROCEDURE DATA The design Input 4.5 provide the following:
Flow Element FE-1G33-N504 (RWCU Inlet Flow)
Range: 0 to 700 GPM = 0 to 200" W.C.
Transmitter FT-1G33-N041A B
{
Calibrated Range: 0 to 200" W.C. (4 - 20 mAdc)
Output Span: 1 to 5 Vdc (See Note 1)
Calib. Tolerance: : 0.02 Vdc Trio Unit FDS-1G33-N042A,B Setting Tolerance: 1 0.012 Vdc Per Design Input 4.6, Analytical Limit: 650 GPM (h Calibration Frecuency (Design Input 4.5)
~
. Transmitters, Trip Unit: 18 months Late Factor: 4.5 months Note 1: The input to the signal converter from the transmitter is measured as a 1-5 Vdc signal developed across a MTU (Master Trip Unit), Further, the method used to calibrate the trans-mitter and the Master Trip Unit is to apply current from the transmitter through this MTU while measuring the DP input to the transmitter and simultaneously monitoring the voltage developed across this same MTU. The SRU used for this loops are 0.1% precision resistor. The accuracy effect of this SRU is small compared to other error terms, and are considered to be negligible.
\ --
b l
l REVISION NO. 0 1
ExhibM E NEP-1242 Rivi:irn 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 23 of 56 11.0 FLOW ELEMENT ERRORS (MODULE 1) 1 l The flow element has an analog input and an analog output.
Therefore, it is classified as an analog module.
11.1 Random Error, Normal Operating Conditions (oln)
Flow element accuracy is the only random error affecting the flow element. The flow element is not a calibratable device. As such, there is no setting tolerance (ST1) applicable for this device. The calibration error for this device is included in the reference accuracy of the flow element. Additionally, the flow element is the first module in the instrument loop.
11.1.1 Flow Element Reference Accuracy (RAln)
The error associated with the reactor water cleanup flow element is calculated per the methodology contained in Reference 3.11 (see Assumption 5.6). Reference 3.11 classifies the error terms calculated here as random errors. The overall flow element measurement uncertainty (RA1) is calculated as follows:
RA1 = [U,2 + U t,3 2 + U,2 +Uost I Base Uncertainty (U ) 3 For Flow Nozzle The base uncertainty is determined from Table 4.10 of Reference 3.11. Per Assumption 5.6, the Group 2 base uncertainty for uncalibrated flow nozzle is 3.20% flow. This value will be used to maintain conservatism in the calculation.
U , ,,,,i, = : 3.20% flow Minimum UDstream Straioht Run Uncertainty (Ugg)
From Section 8.1, the pipe size is 6 inches, schedule 120, and the inner pipe diameter is 4.876 inches. From Section 8.1, the limiting upstream straight run is approximately 82.375"/4.876" =
16.89 pipe diameters, the beta ratio is 0.50, and the closest up-stream flow obstruction is a single 90' bend. From Table 4.11 of Reference 3.11, the denominator for the upstream length ratio is from column 1 and is 7.0 diameters. The upstream length ratio is then:
straight length ratio = 16.89 diameters /7.0 diameters
= 2.41 The minimum straight run uncertainty (Ugs) is taken from Figure 4.5 of Reference 3.11 as 1.0% of flow
)
/
REVISION NO. 0 1
Exhibit E NEP-12-02 R:vizi:n 5 COMMONWEALTH EDISON COMPANY ALCULATION NO. L-001443 PAGE 24 of 56 Beta Ratio Uncertaintv (U, )
From Section 8.1, the beta ratio is 0.50. From Figure 4.6 of Reference 3.11, the beta ratio effect (U,) for a calibrated flow
- element is 0% of flow.
Minimum Downstream Straicht Run Uncertainty (Uost)
From Section 8.1, the limiting downstream straight run is 42"/4.876" = 8.61 pipe diameters. From Table 4.11 of Reference 3.11, the denominator for the downstream length ratio is taken from column 7 and is 3.5 diameters. The downstream length ratio is then:
straight length ratio = 8.61 diameters /3.5 diameters
= 2.46 The minimum straight run uncertainty (U is taken from Figure 4.9 of Reference 3.11 as 0.05% of flow.ost)
RAln ,,,,i, = 2 [ U, ,,,, i, 2 + Utus + U,2 + Uost 2) w
= 2 [(3.2%)2 + (1.0%)2 + (0%)2 + (0. 05%) 2]
- Flow
= 3.352984% Flow hs stated in Section 11.1, CAL 1 = 0, ST1 =0, and clin = 0.
Therefore, Determination of Random Error For Flow No2,zle ( oln ,,,,g,)
o l n ,,,,i, = 2 { (RAln ,,,,i,/ 2 ) 2 + (CAL 1)2 + (ST1)2 + ( clin) 2 ) o.5
=2 ((3.352984% Flow / 2)2 + (0)2 + (0)2 + ( 0 ) 2 } o.5
= : 1.676492% Flow (10) 11.1 Random Error, Accident Conditions (cla)
The random error for the flow elements is the same for normal and accident conditions since none of the error terms are affected by the accident, therefore:
c l a ,,,, g , = 2 1.676492% Flow -[lo]
f%
REVISION NO. 0 1
! Exhibh E l NEP-1242 R3vizinn 5 l l
COMMONWEALTH EDISON COMPANY l __
CALCULATION NO. L-001443 PAGE 25 of 56 l
11.3 Non-Random Error, Normal and accident Operating Conditions l
The flow element is a mechanical device that is not affected by the following non-random errors:
Humidity Errors: elH =0 Ambient Temperature Error elT = 0 Radiation Error: elR = 0 Seismic Error: elS = 0 Static Pressure Effects: elSP = 0 Ambient Pressure Errors: e1AP = 0 Power Supply Effects: elv = 0 11.3.1 Process Error (elP)
From Section 7.0, the process error can very from a normal pressure of 1005 PSIG and 533'F to 1025 PSIG and 550'F. As pressure and temperature changes, the density of the fluid changes. This change in density results in a change in the flow.
The error will be evaluated at design flow of 500 GPM and at DP of 101.62" WC described in the Reference 3.15. This process fe g conditions are calculated at 1005 PSIG and temperature of 533'F.
\
(~j Using the basis flow equation from Reference 3.17 Qk
,. where: 0 = flow k = constant dP = differential pressure p = density of fluid l
Per Reference 3.16, the normal pressure of 1005 PSIG and temperature of 533'F, the density p = 47.116472 lbm/ft. 3 solving for k:
i dF b lE S00 GPM 101. 62 INWc h 47.12 lem / f t '
340.473292
(~N L]
REVISION NO. 0 1 l
Exhibit E NEP-12-02 Rsvisi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 26 of 56 Per Reference 3.16 at the temperature of approximately 550*F, and wximum pressure of 1025 PSIG, p = 46.01085 lbm/ft 3.
C.wr . w van ' k y h 01.62 N l
- (340.473292) h4 6. 012 lbm / f t '
505. 98 4 GPM og. 505.984356 gpm 500 gpm l
- 5. 98 4356 GPM Calculation of flow error due to variation in the pressure and temperature:
O' elp = 2 5.984356 GPM *(100% flow span /500 GPM) elp = 2 1.1969% flow span 11.3.3 Process Error Due To Unknown Uncertainty (elpunknown)
Per Assumption 5.5, the unknown uncertainty is equal to elpunknown =: 0.50% flow span REVISION NO. 0 1
ExhibM E NEP-1242 .
R;vi:isn 5 l l COMMONWEALTH EDISON COMPANY I
_ CALCULATION NO. L-001443 PAGE 27 of 56 11.3.4 Total Non-Random Errors, Normal Operating Condition (Zeln)
The error calculated under normal operating condition is used to determine Allowable Value (AV). Only errors that effect the "as-found" setpoint value will be calculated under Normal Operating Conditions.
The total non-random errors for the flow element is given by the ,
sum of the individual errors. Therefore: !
Eeln = :(elHn + elTn + elRn + elSn + e1SPn + e1APn + elPn l
+ e1Vn + D + elpnunknown )
=
- (0 + 0 + 0 + 0 +0 + 0 + 0 + 0 + 0 + 0)
= 0 11.3.5 Total Non-Random Errors, Accident Operating Condition (Eela)
The total non-random errors for the flow element is given by the sum of the individual errors. Therefore:
Eela = :(e1Ha + elta + elRa + elSa + e1 spa + e1APa + elPa Cjg + elva + D + elpa unknown )
[ = :(0 + 0 + 0 + 0 +0 + 0 + 1.1969% flow span + 0 + 0 i
+ 0.50% flow span) I
= 1.6969% flow span l
I l
l p-(J REVISION NO. 0 1 l
ExhibH E NEP-1242 l R vizi:n S COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 28 of 56 11.4 Module 2- Flow Transmitter Error These loops consists of the flow element, the flow transmitter, and the master trip unit.
11.4.1 Transfer Function Derivation The error in the transmitter output due to the input random and/or non-random errors is calculated using the partial deriv-ative method per Reference 3.2, as follows, i
l T = K (dP - dP,) +C )
1 where: K = transmitter gain (mA/" W.C.)
dP = analog input signal (" W.C.)
d P, = minimum value of calibrated span (" W.C.)
C = transmitter output offset (rN4)
The process span of 0 to 700 GPM corresponds to a DP of 0 to 200" WC, and the transmitter output will be 4-20 mA. The transfer function of the transmitter can be written as, For FT-1G33-N041 A, B, the transmitter input span is 200" W.C.
l k T= (16 mA/ 200" W.C. ) (dP - 0) + 4 mA The partial derivative of T with respect to dP yields:
6T/6dP = (16 mA/200" W.C. ) = 0.08 mA/" W.C.
11.4.2 Random Errors, Normal Ooeratino Conditions 11.4.2.1 Transmitter Reference Accuracy (RA2)
From Section 8.2, the transmitter accuracy is : 0.25% calibrated span. The output span of the transmitter is 16 mA. Therefore, RA2 = : 0.25% span
= : (0.25%) (16 mA) = 0.04 mA
! The vendor's specification for accuracy is a 3c value. There-i fore, RA2 cg3 =1 0.04 mA/3 = : 0.013333 mA [lo)
(d.
REVISION NO. 0 1 o
[ Exhibit E NEP-12-02 Rsviri:n S COMMONWEALTH EDISON COMPANY JLCULATION NO. L-001443 PAGE 29 of 56 11.4.2.2 Transmitter Calibration Error (CAL 2)
Per Section 9.2.2.8, j the calibration error CAL 2 = 2 0.047444 mA 11.4.2.3 Transmitter Setting Tolerance (ST2)
From data given in Section 9.0, calibration tolerance for the transmitter is : 0.02 Vdc. Therefore, per Section 10.0,
- ST2 g ,,3 =
- 0.02 Vdc/3 l
= 2 0.006666 Vdc Using the Ohm's Law, 1-5 Vdc will be converted to 4-20 mA by, using the 2500 resistor, ST2 g3 ,3 = (0.006666 Vdc /2500)
= 2 0.02666 mA J
Temperature Error (eT2n)
,g'}11.4.2.4 Per Design Input 4.2, the vendor has determined that, the
. temperature error is considered to be a random error. Based on Reference 3.5, and Assumption 5.5, the ambient temperature at the transmitter location varies from a minimum of 60*F to a maximum of 118 F. From Section 8.1, the temperature effect on the trans-
, initter within this temperature range is determined below:
elTn = 1 ( (0. 75% (URL) + (O . 5% (SPAN) ) /100 F) ( AT)
=: [ (0. 0075*750"WC + 0. 005*2 00. 00"WC) /100 F) * (118 'F-60
- F)
= : 3.8425" W.C.
From Design Input 4.4, Temperature error is considered as a 30 value, therefore elTn tla) = elTn/3.
e l T n g3 ,3 = 3.8425" W.C./3 =: 1.280833" W.C.
Using the transfer function determined in Section 11.4.1, The temperature error tenn converted in terms of mA is as follows:
eT2n eci,3 = : (eT2ngi,3) * (dT/dP)
=1 (1. 2 8 0 83 3 " W . C. ) * ( 0. 0 8 mA/ " W . C . )
( [. = 2 0.102467 mA
(
l REVISION NO. 0 1
Exhibh E NEP-1242 R:vizi2n S COMMONWEALTH EDISON COMPANY l
_ALCULATION NO. L-001443 PAGE 30 of 56 11.4.2.5 Radiation Error (eR2n)
Per Design Input 4.2, the vendor has determined that the radiation error is considered to be a random error. From Sec-
- tion 8.2, radiation effects are described for exposure during i 7 and after 5.5x10 rads. Per Section 8.2.1, the transmitter is located in the reactor building which has a 40 year TID of 2.0x106 rads. Therefore, 3 eR2n = 0 l
11.4.2.6 Seismic Error (eS2n) I l Per Design Input 4.2, the vendor has determined that the seis-mic error is considered to be a random error. A seismic event defines a particular type of accident condition. Errors in-cluded on the instrument due to seismic vibrations are defined
, only for accident conditions and therefore, are not applicable l during normal plant conditions.
eS2n = 0 11.4.2.7 Static Pressure Effect (ESP 2n)
'/
, Per Design Input 4.2, the vendor has determined that, the l
- Static Pressure error is considered to be a random error. The instrument is valved out during calibration, and therefore, does not experience any effect of high line pressure. The evaluation of the static pressure error is under accident
' condition since, only errors that effect the as-found setpoint value will be calculated under normal operating conditions.
Therefore, l
l elSPn = 0 11.4.2.8 Pressure Error (eP2n)
Per Design Input 4.2, the vendor has determined that the pressure error is considered to be a random error. Per Section 7.0, the maximum static pressure is 1025 PSIG, which is below the published specification. Therefore, Overpressure effect will not be considered. Therefore, elPn = 0 11.4.2.9 Drift (D2)
Per Design Input 4.2, the vendor has determined that the drift i( } error is considered to be a random error. From Section 8.2, REVISION NO. 0 1 f
l
Exhibit E NEP-12-02 R:;visi n 5 COMMONWEALTH EDISON COMPANY
_ CALCULATION NO. L-001443 PAGE 31 of 56 drift is 20.2% URL for 30 months. From Section 10.0 the trans-mitter calibration frequency is 18 months plus 25% late factor.
Vendor also states that the Drift is not time dependent, and error will not reduce if the transmitter is calibrated more frequently. Therefore, D2 = [(IDE)]
= { (0. 2%. (750" WC) ) ]
= 1 1.5" W.C.
From Design Input 4.2, drift error is considered as a 20 value, therefore, D2 ,
3
= 1 1.5" W.C./2
=1 0.75" W.C.
Using the transfer function determined in Section 11.4.1, The drift error term converted in terms of mA is as follows:
D2 c3,3 = : (D2c3,3) * (dT/dP)
-) . = : ( 0 . 7 5 " W . C . ) * ( 0 . 0 8 mA/ " W . C . )
= 2 0.060 mA 11.4.2.10 Random Input Error (o2 inn)
The random error present at the input to the transmitter is due to the flow element and was calculated in Section 11.1.1 c2 inn = cl ug, = : 1.676492% of flow span From Section 8.2, the dp span is 200" W.C.. Per Reference 3.2,
% flow span to % dp span is converted as below:
Evaluating at maximum flow of 700 GPM:
- " l
% !1cw span ert:r P' " . A" S
- 2 nor.i.sl :lcw '
t1.626492% flew sphn . #P".
i cp trun 13.3529844 d
REVISION NO. 0 1
Exhibit E NEP-12 02 R::virisn 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 32 of 56 c2ing 7oncp, = 1 3.352984% span e (200" W.C./100% span)
= 1 6.705968" W.C.
This error is propagated through the transmitter using the derivative of the transfer function determined in Section 11.4.1, as follows:
c2 inn p,op = 2 (c2ing 7oo op,) M/M
= 1 (6.705968" W.C. ) (0.08 mA/" W.C. )
=1 0.536477 mA 11.4.2.11 Determination of Transmitter Random Error (o2n) c2n = :[(RA2)2 + (CAL 2)2 + (ST2)2 + (eT2n)2 + (eR2n)2 + (eS2n)2
+ (ESP 2n)2 + (eP2n)2 + (D2)2 + (o2 inn p,7) 2) o.s c2n = [(RA2)2 + (CAL 2)2 + (ST2)2 + (eT2n)2 + (eR2n)2
+ (eS2n)2 + (ESP 2n)2 + (eP2n)2 + (D2)2 + (c2 inn p,,),2) o.5 e = 2[(0.013333 mA)2 + (0.047444 mA)2 + (0.026666 mA)2 +
(-) .
(0.102467 mA) 2 + (0)2 (0.536477 mA)2)o.s
+ (0)2 + (0)2 + (0)2 + (0.060 mA)2 ,
=1 0.552310 mA O
O REVISION NO. 0 1
[ Exhibit E i
NEP-12-02 R2vizi n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 33 of 56
( 11.5 Random Error, Accident Conditions (c2a) 11.5.1 Transmitter Reference Accuracy (RA2)
The transmitter reference accuracy specification is dependent only on the calibrated span and is not a function of the trans-mitter environment. Therefore, for the purpose of this calcu-lation, the reference accuracy determined for normal operating conditions (Section 11.4.2.1) is the same error that would occur during accident conditions.
RA2 = 2 0.013333 mA 11.5.2 Calibration Error (CAL 2)
Per Section 9.2.2.8, l
) the calibration error CAL 2 =1 0.047444 mA 11.5.3 Transmitter Setting Tolerance (ST2)
Calibration of the transmitter takes place during normal plant conditions, Therefore, The setting tolerance for normal and accident conditions are the same. From Section 11.4.2.3:
. ST2 =1 0.02666 mA 11.5.4 Transmitter Drift Error (D2)
- Instrument Drift is a function of time, and is not dependent on environmental conditions. Therefore, The Drift error for nonnal and accident conditions are the same. From Section 11.4.2.9:
l D2 = 1 0.060 mA l
l
, O-REVISION NO. 0 1
Exhibit E NEP-12-02 R vizi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 34 of 56 11.5.5 Temperature Error under Accident Conditions (e2Ta)
Per Design Input 4.2, the vendor has determined that, the temperature error is considered to be a random error. Based on Reference 3.3 and Assumption 5.5, the ambient temperature range at the transmitter location during accident conditions varies from a minimum of 60 F to a maximum of 145 F. From Section 8.1, the temperature effect on the transmitter within this temperature range is determined below:
e2Ta =
[ ( O . 75 % (URL) + 0. 5% (SPAN) ) /100
- F] ( AT)
= 1 [ (0. 0075 (750"WC) + 0. 005 (2 00"WC) ) /100
- F] (145 - 60*F)
= 2 5.63125" WC Per Design Input 4.4, the temperature effect is a 30 value.
therefore e2Ta g3 ,3 = e2Ta/3.
e2Ta gi ,3 = (1/3 ) (1 5.63125" WC) = 21.877083" WC Using the transfer function determined in Section 11.4.1, The temperature error term expressed as transmitter output is as
{ l follows:
[ e2Ta g3 ,3 = 1 (e2Taci,3) * (dT/dP)
=
(1.877083" WC) * (0. 08 mA/" W.C. )
=e 0.150167 mA 11.5.6 Radiation Error (e2Ra)
Per Design Input 4.2, the vendor has determined that, the radiation error is considered to be random error. As noted in the vendor specification, the radiation effect on the transmitter is given for both low and high values of radiation.
From Reference 3.3, the worst case radiation level within the transmitter environment during accident condition is 1 x 107 RADS (Gamma Integrated). Within this range, the radiation effect equation used is for low level radiation as given below:
e2Ra = 1 0.5%(URL) + 1.0% Span
= - 0.005 (750" WC) + 0.01 (200" WC)
=1 5.75" WC l'
t
(
REVISION NO. 0 1
i Exhibit E NEP-12-02 R:vizian 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 35 of 56 Per Design Input 4.2, the Radiation effect is considered to be a 2c value, therefore, e2Ra g3 ,3 = e2Ra/2.
e2Ra g3 ,3 = 2 5.75" WC/2 = 2 2.875" WC 1
l Using the transfer function determined in Section 11.4.1, The i radiation error term expressed as transmitter output is as fol-I lows:
e2Ra g3 ,3 = (e2Rag3,3) * (dT/dP)
I = : (2. 875" WC) * (0. 08 mA/" W.C. )
= 1 0.23 mA 11.5.7 Static Pressure Error (e2 spa) i Per Design Input 4.2, the vendor has determined that, the l
Static Pressure error is considered to be a random error. From Section 7.0, the systems maximum operating pressure is 1025 psig. Therefore, ESP 2a ZEno = 0.2% URL/1000 psig l
-)
= 1 (0.2%) (750 INWC)
- 1025 psig/1000 psig
. = 1 1.5375" W.C.
~
l ESP 2asp ,, = 1 0.5% rdg/1000 psig
= (0. 5%) (200" W.C. )
- 1025 psig/1000 psig
= 1 1.025" W.C.
ESP 2a = : [(ESP 2azeno) + (ESP 2a sp ,,) 2) 0.5
= ((1.5375" W.C.)2 + (1.025" W.C.)2)o.5
= : 1.847845" W.C.
From Design Input 4.2, Static Pressure error is considered as a 3a value, therefore ESP 2a,,3 = ESP 2a/3. g 1
ESP 2a g3 ,3 = 1.847845" W.C./ 3 = 1 0.615948" W.C. l Using the transfer function determined in Section 11.4.1, the static pressure error term converted in terms of mA is as fol-lows:
ESP 2a g3 ,3 = . (ESP 2ag3,3) * (dT/dP)
= : ( 0. 615 9 4 8 " W . C . ) * ( 0. 0 8 mA/" W . C . )
l = 1 0.049276 mA REVISION NO. 0 1
Exhibk E NEP-1242 R vuinn S COMMONWEALTH EDISON COMPANY q l
i CALCULATION NO. L-001443 PAGE 36 of 56 1
11.5.8 Seismic Error (e2Sa)
Per Design Input 4.2, the vendor has determined that, the seismic error is considered to be a random error. As noted in the vendor's specifications listed in Section 8.2, the seismic effect on the transmitter is given for the ZPA of 8.5 g's, and the vertical ZPA of 5.2 g's. Therefore, the seismic effect on the transmitter during accident conditions is:
i e2Sa = 1 0. 5 % (URL) l = 2 0.005 (750" WC) l
= r 3.75" WC From Design Input 4.2, Seismic error is considered as a 20 value, therefore e2Sa g ,3 = e2Sa/2.
e2Sa g ,3 = 3.75" W.C./2
= 2 1.875" W.C.
g- Using the transfer function determined in Section 11.4.1, The t
s Seismic error term expressed as transmitter output is as follows:
- e2Sa g ,3 = 1 (e2Sag,3) * (dT/dP) i
= : (1. 875" W.C. ) * (0. 08 mA/" W.C. )
9
= 2 0.15 mA 11.5.9 Pressure Effect (e2Pa)
Per Design Input 4.2, the vendor has determined that the pressure error is considered to be a random error. Per Section 7.0, the maximum static pressure is 1025 PSIG, which is well below the published specification. Therefore, Overpressure effect will not be considered. Therefore, e2Pa = 0 O>
REVISION NO. 0 1
Exhibit E NEP-12-02 Rsvisian 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 37 of 56 11.5.10 Random Input Error (o2ina)
Per Section 11.4.2.10, The input error from the flow element for accident condition is determined to be same as normal random error. Therefore, c2ina ,app =2 0.536477 mA 11.5.11 Determination of Transmitter Random Error (o2a) 02a = ((RA2)2 + (CAL 2)2 + (ST2)2 + (eT2a)2 + (eR2a)2 + (eS2a)2
+ (ESP 2a)2 + (eP2a)2 + (D2)2 + (o2ina ,op) p 2) o.5 c2a = 1[(RA2)2 + (CAL 2)2 + (ST2)2 + (eT2a)2 + (eR2a)2
+ (eS2a)2 + (ESP 2a)2 + (eP2a)2 + (D2)2 + (o2inappop ) 2) o.5
= :[(0.013333 mA)2 + (0.047444 mA)2 + (0.02666 mA)2 .
-(0.150167 mA) 2 + (0.23 mA)2 + (0.15 mA)2 + (0.049276 mA)2 .
(0)2 + (0.060 mA)2 + (0.536477 mA) 2) o.5
= e 0.628431 mA ru tu.
l REVISION NO. 0 1
ExhibM E NEP-1242 Ravi:isn 5 l
COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 38 of 56 l 11.6 Non-Random Errors for Normal Operating Conditions (Ee2n) l 11.6.1 Humidity Error (e2Hn) l The transmittOr humidity limit is 100% RH per vendor specifica-tions listed in Sections 8.2. From Section 8.2, the humidity l
range at the transmitter location during normal operation is 25-35% RH. Therefore:
e2Hn = 0 11.6.2 Pressure Error (e2Pn)
There are no ambient pressure errors described in the vendor's specifications for this device. Based on Assumption 5.2, ambient pressure effects associated with the transmitter are included in instrument reference accuracy, Therefore:
e2Pn = 0 11.6.3 Power Supply Effects (e2Vn)
Per Section 8.1, e2Vn = 0.005% span / volt Per Reference 3.5, table 3, the maximum and minimum operating
. voltage available to drive the transmitters are 26 Vdc and 22 Vde, respectively. Therefore, the maximum voltage variation possible for operating the transmitter is 4 Vdc.
e2Vn = 0.00005* (200" W.C. ) e 4V ) /1V
= 10.04" W.C.
l Using the transfer function determined in Section 11.4.1, The power supply error term expressed as transmitter output is as follows:
e2Vn g ,) = (e2Vng,3) e (dT/dP)
= : ( 0. 04 " W . C. ) * ( 0. 0 8 mA/" W . C . )
=1 0.0032 mA 11.6.4 Process Error (e2pn)
Process measurement errors are associated with the flow element and were evaluated under Section 11.3.1. There are no additional process errors associated with the transmitter. Therefore, t N e2pn = 0
, \_)
l .p,'
REVISION NO. 0 1 w.e
Exhibh E NEP-1242 Ravilisn 5 COMMONWEALTH EDISON COMPANY l
CALCULATION NO. L-001443 PAGE 39 of 56 l
11.6.5 Insulation Resistance Error (e2IRn) ;
a References 3.1 and 3.2, under conditions of high humidity and I temperature associated with high energy line breaks (HELB), !
insulation resistance may be reduced. This reduction casults in signal error that is experienced during harsh environmental conditions, hence IR is not applicable during normal plant condi-tions. Therefore; e2IRn = 0 l
l 11.6.6 Non-Random Input Error (e2 inn)
The non-random error present at the input to the transmitter is due to the flow element and was calculated in Section 11.3.3 e2 inn = ein = 0 l 11.6.7 Transmitter Total Non-Random Error (Ee2n) l Ee2n = (e2Hn + e2Pn + e2Vn + e2pn + e2IRn + e2 inn) l
= :(0 + 0 + 0.0032 mA + 0 + 0 + 0)
= : 0.0032 mA
< 1 REVISION NO. 0 1
ExhibM E NEP-1242 Rsvill:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 40 of 56 11.7 Non-Random Errors for Accident Operating Conditions ([e2a) 11.7.1 Humidity Error (e2Ha)
The transmitter humidity limit is 100% RH per vendor specifica-tions listed in Sections 8.2. From Section 8.2, the maximum humidity at the transmitter location during accident operation is 95% RH. Therefore:
e2Ha = 0 11.7.2 Pressure Error (e2Pa)
There are no ambient pressure errors described in the vendor's specifications for this device. Based on Assumption 5.2, ambient pressure effects associated with the transmitter are included in instrument reference accuracy, Therefore:
e2Pa = 0 11.7.3 Power Supply Effects (e2Va)
Per Section 8.1, e2Vn = 0.005% span / volt 1 Pe.r Reference 3.5, table 3, the maximum and minimum operating voltage available to drive the transmitters are 26 Vdc and 22 Vde, respectively. Therefore, the maximum voltage variation possible l
for operating the transmitter is 4 Vdc. l e2Va = 0.00005e (200" W.C. )
- 4V ) /1V l
= 20.04" W.C.
Using the transfer function determined in Section 11.4.1, The power supply error term expressed as transmitter output is as fol-lows:
e2Va g ,3 = : (e2Vag,3) * (dT/dP)
= : (0. 04" W.C. ) * (0. 08 mA/" W.C. )
= 2 0.0032 mA 11.7.4 Process Error (e2pa)
Process measurement errors are associated with the flow element and were evaluated under Section 11.3.1. There are no additional process errors associated with the transmitter. Therefore, O e2pa = 0 REVISION NO. 0 1
Exhibit E NEP-12 02 R::visi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 41 of 56 l 11.7.5 Insulation Resistance Error (e2 ira)
Per References 3.18 and 3.19, the insulation resistance error is considered negligible with respect to other error terms, Therefore, e2 ira = 0 l
l 11.7.6 Non-Random Input Error (e2ina)
The non-random error present at the input to the transmitter is due to the flow element and was calculated in Section 11.3.3 l
l e2ina = e1 = 2 1.6969% of flow span From Section 8.2, the dp span is 200" W.C.. Per Reference 3.2, %
flow span to % dp span is converted as below:
Evaluating at maximum flow of 700 GPM:
% ficw spsn error. P 'P'" <
- N*# "
2 norms 1 flow t1.6969+ Wwsysn. * * #P'" . '00
- 2 700 GPM
.' % dp spsn i3.3938 %
e2ina a 700 CPM =2 3.3939% span e (200" W.C./100% span) 4 = 2 6.7876" W.C.
This error is propagae.ed through the transmitter using the derivative of the trrnsfer function determined in Section 11.5.1, as follows: '
e2ina pgo, = (e2ina, 700 cp,) (W,/m
= : (6.7876" W.C. ) (0. 08 mA/" W.C. )
= 0.543008 mA 1
11.7.7 Transmitter Total Non-Random Error '(Ee2a)
Ee2a =
(e2Ha + e2Pa + e2Va + e2pa + e2 ira + e2ina ,op) p
= : (0 + 0 + 0.0032 mA + 0 + 0 + 0.543008 mA)
= 1 0.546208 mA C
REVISION NO. 0 1
Exhibh E NEP-12-02 Ravi:izn 5 COMMONWEALTH EDlSON COMPANY MLCULATION NO. L-001443 PAGE 42 of 56 11.8 MASTER TRIP UNIT ERRORS (MODULE 3)
Module 3 Has an analog input with a discrete output, classified as a bistable module.
11.8.1 Random Error - Bistable Module (o3 ) (Master Trip Unit) 11.8.1 MTU Trip Point Repeatability (RPT2)
The vendor repeatability specification listed in Section 8.2 defines a 2c value that is accurate for 6 months (Design Inputs 4.3, 4.4). The calibration frequency (SI) is 18 months and the late factor (LF) is 4.5 months. Therefore, The maximum temperature at the MTU location is 80*F (which is within the vendor's 60'F to 90*F repeatability spec. ) and the input span is 4.0 Vdc.
RPT3n = 2 (0.13% of span /100*F) /6 months) (SI) (1 + LF/SI)
RPT3n = : ( [0. 0013 * (4. 0 Vdc) ] /6 months) * (18 months) * (1+ 4. 5/18)
1 0.0195 Vdc O The vendor's specification for accuracy is a 2c value. Therefore, the standard deviation for reference accuracy is as follows, RPT3n g ,3
(1 0.0195 Vdc) / 2
1 0.00975 Vdc 11.G.2 MTU Calibration Error (CAL 3) 11.8.2.1 Calculation of MTE3 , 3 From Section 9.2.2.6, The worst case MTE used to measure the input to the MTE is MTE3 ,
3 0.00220 Vdc 11.8.2.2 Calculation of STD3 The error due to calibration accuracy of calibration equipment is assumed to be negligible. Therefore, STD3 = 0 REVISION NO. 0 1
i Exhibit E NEP-12-02 R;;vitirn 5 COMMONWEALTH EDISON COMPANY 3LCULATION NO. L-001443 PAGE 43 of 56 The calibration erro.- is detemined as follows :
CAL 3 =
[(MTE3n)2 + (STD3)2)w
= 2((0.00220 Vdc)2 + (0)2)w )
= 2 0.00220 Vdc 11.8.3 Setting Tolerance (ST3) l The master trip unit setpoint setting tolerance is given in j Section 10.0.
ST2 = 2 0.012 Vdc Per Section 2.1.a, ST1 is considered as a 3a value, therefore ST3c3,3 = ST3 /3.
ST3g3 ,3 = 1 0.012 Vdc/3 = 10. 004 Vdc 11.8.4 Random Input Errors (o3 inn)
The random error present at the input to the MTU is due to the
) transmitter and was calculated in Section 11.4.2.11. Calculation of.c2 pr9p is equivalent to the scaling conversion due to the Linearity of the devices. The value for c2n determined for the transmitter is provided in terms of the transmitter output.
Therefore,
~
c3 inn = c2p,,, = : o2n c3ina = 1 0.551936 mA Convert c3ina from 4 to 20mA to 1 to 5 Vdc by multiplying with 2500 resistor, c3 inn = : (0.552310 mA) * (2500)
= 1 0.138078 Vdc 11.8.5 Drift Error (D3)
Based on Design Input 4.3, the drift error associated with the MTU is included in the repeatability. Thererore:
D3 = 0 I
f I REVISION NO. 0 1 l
Exhibit E NEP-12-02 Rsvizi:n S COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 44 of 56 l
11.8.6 Temperature Error (e3Tn)
Based on Design Input 4.3, the temperature error associated with the MTU is included in the repeatability. Therefore:
i e3Tn = 0 l 11.8.7 Determination of MTU Random Errors (c3n) 03n = [ (RPT3 ( 3,3 ) 2 +(CAL 3)2 + (ST3)2 + (c3 inn) 2+ (D3 ) 2 + (e3Tn) 2) 0.5
= [(0.00975 Vdc)2 +(0.00220 Vdc)2 + (0.004 Vdc)2
+ (0.138078 Vdc)2 + (0)2 + (0)2)o.5 03n = 0.138497 Vdc l I esp 6
e 1
l l I REVISION NO. 0 1
Exhibh E NEP 1242 i R:vizi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 45 of 56 11.9 Random Error, Accident Conditions (c3a) 11.9.1 MTU Trip Point Repeatability (RPT3a)
The vendor does provide accident condition specifications for the MTU. However, the MTU is located in a controlled environmental area such that Normal Operating Conditions and Accident Condi- ,
I tions are the same (Section 8.2). From Section 11.8.1, RPT3a = RPT3n = 1 0.00975 Vdc 11.9.2 MTU Calibration Error (CAL 3)
Calibration of the MTU takes place during normal plant condi-tions. Therefore, The calibration error for normal and accident conditions are the same. From Section 11.8.2:
CAL 3 = 1 0.00220 Vdc l
11.9.3 MTU Setting Tolerance (ST3)
)
Calibration of the MTU takes place during normal plant condi-tions. Therefore, The setting tolerance for normal and accident l l conditions are the same. From Section 11.8.3:
ST3 = 0.004 Vdc j
1 11.9.4 Drift Error (e3D)
, Based on Design Input 4.3, the drift error associated with the MTU is included in the repeatability error. Therefore:
l e3D = 0 l I
11.9.5 Temperature Error (e2Ta)
Based on Design Input 4.3, the temperature error associated with the MTU is included in the repeatability error. Therefore:
e3Ta = 0 l l I REVISION NO. 0 1
Exhibit E NEP-12-02 R:vi:i:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 46 of 56 11.9.6 Random Input Errors (c3ina)
The random error present at the input to the MTU is due to the transmitter and was calculated in Section 11.5.11. Calculation of c2p ,,, is equivalent to the scaling conversion due to the linearity of the devices. The value for 02a determined for the transmitter is provided in terms of the transmitter output.
Therefore, c3ina = c2 p,,, = t o2a 03ina = 1 0.628431 mA Convert c3ina from 4 to 20mA to 1 to 5 Vdc by multiplying with (
2500 resistor, c3ina = (0.628431 mA) * (2500)
= 1 0.157108 Vdc 11.9.7 Determination of MTU Random Errors (o3a) l I 03a = { (RPT3 (3,3 ) 2 +(CAL 3)2 + (ST3)2 +
(o3ina) 2+ (D3 ) 2 + (e3Ta) 2) 0.5 1
. =
[(0.00975 Vdc)2 +(0.00220 Vdc)2 + (0.004 Vdc) 2
+ (0.157108 Vdc)2 + (0)2 + (0)2 35 0 03a =1 0.157476 Vdc
- ?- ,
l l
)
I l l REVISION NO. 0 1 l
l Exhibk E NEP-1242 Rsvizirn 5 l COMMONWEALTH EDISON COMPANY
!I ICALCULATION NO. L-001443 PAGE 47 of 56 11.10 Non-Random Errors for Normal Operation (Ee3n) j 11.10.1 Humidity Error (e3Hn)
There are no humidity related errors described in the vendor's i specifications for this device. Based on assumption 5.2, j humidity effects associated with the MTU are included in the I repeatability error. Therefore:
e3Hn = 0 11.10.2 Radiation Error (e3Rn)
Based on Reference 3.5, the radiation level within the MTU envi- I ronment during accident plant conditions is < 1 x 103 RADS TID.
From Reference 3.8, the accuracy of the MTU will remain within its stated repeatability within radiation levels s 1 x 105 RADS TID. Therefore:
e3Rn = 0 11.10.3 Seismic Error (e3Sn)
,~
(') A seismic event defines a particular type of accident condition.
Errors included on the instrument due to seismic vibrations are
_ defined only for accident conditions and therefore, are not applicable during normal plant conditions.
e3Sn = 0
[1.10.4 Static Pressure Error (e3SPn)
The MTU is an electrical device and as such is not affected by static pressure changes. Therefore:
e3SPn = 0 11.10.5 Pressure Error (e3Pn)
The MTU is an electrical device and as such is not affected by ambient pressure changes. Therefore:
e3Pn = 0 11.10.6 Power Supply Error (e3Vn) l There are no power supply variation effects stated in the vendor's specifications for this device. Based on Assumption
(,) 5.2, error effects associated with power supply fluctuations are REVISION NO. 0 1
ExhibM E NEP-1242 Rsvisinn 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 48 of 56 included in the repeatability error. Therefore:
e3Vn = 0 11.10.7 Process Error (e3pn)
The MTU is an elect:rical device and as such is not af fected by process errors. Th aref ore :
e3pn = 0 11.10.8 Non-Random Input Error (e31nn)
The non-random error present at the input to the trip unit, is due to the transmitter and was calculated in Section 11.6.7:
e3 inn = Ee2n
=r 0.0032 mA Convert e3 inn from 4 to 20mA to 1 to 5 Vdc by multiplying with 2500 resistor, e3 inn = 1 (0.0032 mA) e (2500)
. = 1 0.0008 Vdc 11.10.9 Insulation Resistance Error (e3IRn)
Insulation resistance error is not applicable during normal plant conditions, which have a small controlled range of temperature and humidity conditions, and there is no effect applicable as noted below:
e3IRn = 0 11.10.10 Total Non-Random Error (Ze3n)
The total non-random error for the MTU under normal operating conditions is determined below.
Ee3n =
1(e3Hn + e3Rn + e3Sn + e3SPn + e'3Pn + e3Vn + e3pn
+ e3 inn + e3IRn)
= :(0 + 0 + 0 + 0 + 0 + 0 + 0 + 0.0008 Vdc + 0)
=2 0.0008 Vdc O
V REVISION NO. 0 1
Exhibh E NEP 1242 R:vizi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 49 of 56 11.11 Non-Random Errors for Accident Operation (Ee3a) 11.11.1 Humidity Error (e3Ha)
There are no humidity related errors described in the vendor's specifications for this device. Based on assumption 5.4, humidity effects associated with the MTU are included in the repeatability error. Therefore:
e3Ha = 0 11.11.2 Radiation Error (e3Ra)
Based on Reference 3.5, the radiation level within the MTU envi-ronment during accident plant conditions is < 1 x 103 RADS TID.
From Reference 3.8, the accuracy of the MTU will remain within its stated repeatability within radiation levels s 1 x 10 RADS 5
TID.
Therefore:
e3Ra = 0
- 11.11.3 Seismic Error (e3Sa)
\- From Section 8.2, and Reference 3.16, the MTU will remain within its stated repeatability when subjected to seismic vibrations with a ZPA of 1.17 g OBE and 1.75 g SSE, Which is well above the station guidelines of 0.029. Therefore:
~
7 e3Sa = 0 11.11.4 Static Pressure Error (e3 spa)
The MTU is an electrical device and as such is not affected by static pressure changes. Therefore:
e3 spa = 0 11.11.5 Pressure Error (e3Pa)
The MTU is an electrical device and as such is not affected by ambient pressure changes. Therefore:
e3Pa = 0 11.11.6 Power Supply Error (e3Va)
There are no power supply variation effects stated in the vendor's specifications for this device. Based on Assumption 5.2, error REVISION NO. 0 1 l
t _ __
l ExhibM E NEP-1242 Rzvisian 5 COMMONWEALTH EDISON C~OMPANY l bALCULATION NO. L-001443 PAGE 50 of 56 effects associated with power supply fluctuations are included in the repeatability error. Therefore:
( e3Va = 0 11.11.7 Process Error (e3pa)
The MTU is an electrical device and as such is not affected by l process errors. Therefore:
e3pa = 0
)
11.11.8 Non-Random Input Error (e3ina)
I The non-random error present at the input to the trip unit, Ee2a, is due to the transmitter and was calculated in Section 11.7.7:
l e3ina = Ee2a i
e3ina =2 0.546208 mA '
Convert e3 inn from 4 to 20mA to 1 to 5 Vdc by multiplying with
() '
e3ina = (0.546208 mA) * (2500)
. = 0.136552 Vdc 11.11.9 Insulation Resistance Error (e3 ira)
Per References 3.18 and 3.19, the insulation resistance error is considered negligible with respect to other error terms, Therefore, e3 ira = 0 11.11.10 Total Non-Random Error (Ee3a)
The total non-random error for the MTU under accident operating conditions is determined below.
Ee3a =
(e3Ha + e3Ra + e3Sa + e3 spa + e3Pa + e3Va + e3pa + e3ina
+ e3 ira)
=
(0 + 0 + 0 + 0 + 0 + 0 + 0 + 0.136552 Vdc + 0)
Ee3a = 2 0.136552 Vdc lf
(
REVISION NO. 0 1
Exhibh E NEP-1242 Rsvizi:n 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 51 of 56 12.0 TOTAL ERROR, NORMAL OPERATING AND ACCIDENT CONDITIONS (TE3)
Per Reference 3.2 methodology, the total error is defined as; TE3 = 2* (o3 ) + Ee3 where: c3 = total randon error Ze3 =
total non-random error 12.1 Total Error, Normal Operating Conditions (TE3n)
From Section 11.8.7, c3n = : 0.138403 Vdc From Section 11.10.10, Ee3n = 2 0.0008 Vdc TE3n =1 (2 e 0.138497 Vdc) + 0.0008 Vdc
= 0.277794 Vdc (2c]
l Converting Total error (TE3n) in to process error (GPM),
Per Section 10.0, 0 to 700 GPM corresponds to 4 to 20 mA, which converts to 1 to 5 Vdc signal input to trip unit. Therefore, the
-s transfer function of the trip unit can be written as,
\'
T= (700 GPM/ 4 Vdc) (dP - 0) + 1 Vdc The partial derivative of T with respect to dP yields:
6T/6dP = (700 GPM/4 Vde) = 175 GPN/ Vdc TE3n = (0.277794 Vdc)*(175 GPM/Vde)
=: 48.61395 GPM = : 50 GPM [2c]
12.2 Total Error, Accident Conditions (TE3a) l From Section 11.9.7 c3a = 2 0.157457 Vdc From Section 11.11.10, Ze3a = 2 0.136552 Vdc TE3a = 1 (2 e 0.157476 Vdc) + 0.136552 Vdc
=1 0.451504 Vdc (2c]
Converting Total error (TE3a) in to process error (GPM),
TE3a = (0.451504 Vdc)*(175 GPM/Vdc)
= 79.0132 = : 80 GPM [2c]
\~J i REVISION NO. 0 1
ExhibM E NEP 1242 R:visun 5 COMMONWEALTH EDISON COMPANY
,, CALCULATION NO. L-001443 PAGE 52 of 56 13.0 ERROR ANALYSIS 13.1 DETERMINATION OF ALLOWABLE VALUE AND NOMINAL TRIP SETPOINT.
From Section 10.0, l
Analytical Limit (AL) = 650 GPM l 13.2 DETERMINATION OF NOMINAL TRIP SETPOINT (NTSP) i l
From Section 12.2, total error TE3a = : 80 GPM For conservatism, an additional margin of 21% of AL will be added for the determination of the setpoint.
MAR = (0.01) (650 GPM) = : 6.5 GPM 1
From Reference 3.2, the nominal trip setpoint is calculated for the actuation on a increasing process parameter is given as, NTSP = AL - (TE3a + MAR)
=
650 GPM - [80 GPM + 6.5 GPM]
l )
= 563.5 GPM, This value be rounded down to 560 GPM Calculating Process Setpoint of 560 GPM to Differential Pressure (DP) by using the transmitter span of 200" WC, which corresponds to process flow of 700 GPM. Calculating the setpoint in the units
, of*"WC, by using basic flow equation from Reference 3.17 r- k die Calculating Dp at 560 GPM, T2 dP2 F1 ' ) dP1 Since, F1 = 700 GPM, dP1 = 200" WC, F2 = 560 GPM, dP2 =?
Now, Solving for dP2, dP2 = (560 / 700)2 *
(200" WC) = 128" WC
,CT NTSPg yc3 = 128" WC equivalent to 560" WC.
\_/
REVISION NO. 0 1
Exhibh E NEP-1242 Rsvisi:n 5 i COMMONWEALTH EDISON COMPANY l ALCULATION C NO. L-001443 PAGE 53 of 56 Per Section 10.0, O to 200" WC corresponds to 4 to 20 mA, which converts to 1 to 5 Vdc signal input to trip unit. Therefore, the transfer function of the trip unit can be written as, T= (4 Vdc/ 200" WC) (dP - 0) + 1 Vdc The partial derivative of T with respect to dP yields:
ST/6dP = ( 4 Vdc/ 200" WC) + 1 Vdc = 0.02 Vde/" WC + 1 Vdc Converting Setpoint of 128" WC to trip unit setting value in Vdc by using the transfer function derived above.. Calculating the setpoint in the units of Vdc, NTSP tyde) =
(128" WC)* (0.02 Vdc/" WC) + 1 Vdc
= 3.56 Vdc l
13.3 DETERMINATION OF ALLOWABLE VALUE (AV)
From Section 12.1, total error TE3n = 2 50 GPM From Reference 3.2, the allowable value is calculated for the
( s.) actuation on a increasing process parameter is given as,
= (560 GPM + 50 GPM)
= 610 GPM Calculating Process Allowable Value of 610 GPM to Differential Pressure (DP) by using the transmitter span of 200" WC, which corresponds to process flow of 700 GPM. Calculating the allowable value in the units of "WC, by using basic flow equation from Reference 3.17 FkQPE Calculating Dp at 610 GPM, i
F2 dP2 FI ' \ dP1 j
l REVISION NO. 0 1
Exhibit E NEP-12-02 Ravisiin S COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 54 of 56 Since, F1 = 700 GPM, dP1 = 200" WC, F2 = 610 GPM, dP2 =?
Now, Solving for dP2, dP2 = (610 / 700)2 *
(200" WC) = 151.88" WC Allowable Value,,g3= 151.88" WC equivalent to 610" WC.
g Per Section 10.0, O to 200" WC corresponds to 4 to 20 mA, which converts to 1 to 5 Vdc signal input to trip unit. Therefore, the transfer function of the trip unit can be written as,-
T= (4 Vdc/ 200" WC) (dP - 0) + 1 Vdc The partial derivative of T with respect to dP yields:
6T/6dP = ( 4 Vdc/ 200" WC) + 1 Vdc = 0.02 Vdc/" WC + 1 Vdc Converting allowable value of 151.88" WC to trip unit setting value in Vdc by using the transfer function derived above.
Calculating the Allowable Value (AV) in the units of Vde, AV(vde)
= (151. 8 8" WC) * (O.02 Vdc/" WC) + 1 Vdc
, = 4.00 Vdc l
/
REVISION NO. 0 1
~
Exhibh E NEP-1242 Rsvisi:n 5 COMMONWEALTH EDISON COMPANY
()CALCULATIONNO. L-001443 PAGE 55 of 56 14.0 TRANSMITTER SCALING - Correction for High Line Pressure The differential pressure transmitter is calibrated with the low side at ambient pressure but will be used at high line pressure. The following corrects the span adjustment to compensate for the effect of static pressure on the unit using the method defined in Reference 3.8.
14.1 Calculation of Static Pressure Correction Factor As defined in Section 8.2, the transmitter is a Model 1154 Range Code
- 5. Per Reference 3.6, the correction factor is + 0.75% of input per 1,000 psi. Per Section 10.0, the required range is 0 - 2 00 "WC corresponding to a 4 - 20 mA output. Per Section 7.0, the maximum system operating process pressure is 1025 psig. The correction factor (CF) is determined as:
CF = (+ 0.75 % / 1,000 psi) *
(system Operating Pressure)
= (+ 0.75% / 1000 psi) *
(1025 psi) = + 0.769 % of span 14.2 Calculation of Zero Adjustment The transmitter calibration does not require zero suppression or
(,-~)
s-elevation; therefore, correction of the zero adjustment is not required.
14.3 Calculation of Span Adjustment (SAcyc3)
Using the correction factor from Section 15.1, the span affect in "WC ip determined as follows:
S A(Sc)= CF
- Span ,ga3 c
=
(+0.769%) * (200" WC) = + 1.538" WC 14.4 Correction of Span To compensate for this effect, the calibrated span should be adjusted to account for this affect on span as follows:
Span geon,) = Spang ,ga3 - SA(Sc) =
(200 - 1.538) " WC = 19 8. 4 62 "WC Therefore, to compensate for the expected effect from high line pressure, the transmitter should be calibrated as follows:
Transmitter Input: 0-198.5 "WC Transmitter Output: 4-20 mA O
REVISION NO. 0 1 i
Exhibit E NEP 12-02 Ravi:irn 5 COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001443 PAGE 56 of 56 3 I
15.0 ERROR ANALYSIS
SUMMARY
AND CONCLUSIONS This calculation determined the allowable value (AV) and the l Nominal Trip Setpoint (NTSP) for the Reactor Water Clean up system !
high flow break detection isolation.
The setpoint and allowable value are determined based on the Analytical limit of 650 GPM. The setpoint of 560 GPM, and an Allowable Value of 610 GPM provides 95/95 assurances that it will not exceed design and licensing bases.
The acceptance criteria, as defined in Section 2.2, has been met.
This calculation indicates with a high degree of confidence, for the following instruments, that the Tech Spec LCO (Allowable Value) and Analytical Limit will not be exceeded under accident and normal conditions respectively, when the transmitter / trip unit are calibrated to the new determined setpoint, and using the test equipment specified in Section 9.0.
1G33-N041A,B 1G33-N609A,B c THE INSTRUMENT MAINTENANCE DEPARTMENT SHOULD DEVELOP A CALIBRATION f f PROCEDURE BASED ON THE CALIBRATION RANGE OF 0 TO 198.5" WC, WHICH CQRRESPONDS TO 4 TO 20 mA. THE CALIBRATION RANGE OF 198.5" WC IS CORRECTED FOR HIGH LINE STATIC PRESSURE EFFECT. IT IS RECOMMENDED THAT TRIP UNIT CALIBRATION SETPOINT BE SET AT 550 GPM (3.50 Vdc 2 0.012 Vdc). THE SETTING TOLERANCE FOR THE TRANSMITTER IS 2 0.02 Vd,c.
[ FINAL]
O REVISION NO. 0 1
jQ ./ i. w w og RECORD OF 'ITIIPHONE CONVERSATION d *d" l ~ 0 # 'M3 Rev.)
O Date 09/09/94 Between Vikram Shah and B. Bellovec of Sirnals & Saferuards of CECO.
Telephone 815-357-6761. Ext. 2673 - Subject Calibration of Rosemount Transmitters and the Soan & 2ero Adiustment For Y An11e Station. Station t2Ralle Station Units 1 and 2 l Memorandum:
I explained to Mr. Bejlovec the purpose of my call. I asked him if the LaSalle Instrument Mechanic Department have been instructed to chaeck the zero and span adjustment at he time of the calibration.
1 Answer l
Mr.Bejlovec has stated that it is a general practice that every rosemount transmitters are check for the static and span correction at the time of the calibration. They have been asked to follow the manufacturer's instruction to perform the adjustment on the span & zero adjustment.
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Mr. Ed Kaczmorski '
nep, g Commonwealth Edison Co. 4 Nuclear Engineering 7%DAS4 .s"f3/
1400 OPUS Place, Suita 400 Downers Grove, IL 60515 Re: Pressure Transmitter Performance Specifications
Dear Mr. Kaczmorski,
Per your request, the :following information is forwarded to clarify the performance specifications of Rosemount commercial grade and nuclear qualified instrumentation.
Nuclear cualified Instrumentation:
Rosemount Nuclear Qualified instrumentation applicable to Commonwealth Edison Plants are the Model 1152, 1153 Series B, 1153 series D, 1154 and 1154 Series H Pressure-Transmitters; Model 353C conduit Seals; and the Model 710DU O, - ,
Trip / Calibration System. The specifications referenced in
'- . Rosemount literature are separated into $ Nuclear specifications' which include the DBE simulation and
' Performance Specifications' which include transmitter performance under plant reference conditions.
The $ Nuclear Specifications' which include Radiation, Seismic, LOCA/HELB, and Post DBE are derived from the Type Testing completed on each model type. Due to the limited sample sine in the Type Tests these specifications are based on worst case errors plu,s margin as rcfarenced in IEEE 323-1974 (1983). For most practical purposms, these specifications are considered 2-sigma. (Two standard deviations). ,,
The ' Performance Specifications' are determined from testing completed on large samples of each model type. In addition, all manufactured units are tested to insure meeting published specifications prior to shipment. Therefore, these specifications are considered 3-sigma. (Three standard deviations).
There is one exception to this rule. The Point Drift Specification of 1 20% URL for 24 Honths which replaces the ,
O stability specification of +/ .25% URL for 6 months for all '
nuclear transmitters is considered to be 2-sigma based on j
,,,, the sample size used during testing. l l
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, 13001 Tecnnemey Dme geen Preme. WN 88344 U.SA O Page 2 of 2 commercial Grada Instrumentation:
The specifications published for Rosemount commercial grade instrumentations are considered to be 3-sigma. All Model 1151 Transmitters, 444 Temperature Transmitters and related hardware specifications were based on testing of very large j sample sizes. In addition, most all specifications are i verified during manufacturing of the instrumenta. l specifications written as +/- for both' Nuclear and i
commercial Grade instrumentation implies random uncertainty allowances within the specification band. These specifications are normally distributed for most prgetical purposes.
We anticipate this information will assist you in the interpretation of Rosemount specifications. If we can be of further assistance, please do'not. hesitate to contact us.
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, sincerely, Timothy J. yer
. ~ Marketing Engineer Rosemount Nuclear Products cc N. Hyrniw #7 TJL 1
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STATIC PRESSURE EFFECTS 6 'S ON ROSEMOUNT NUCLEAR TRANSMITTERS To obtain the highest accuracy flow and pressure measurements an understanding of the ef1ects of high static pressure is needed. The purpose of this data sheet is to explain the effects of high static pressure on Rosemount nuclear pressure transmitters.
Static pressure affects the 6 cellin two different and independent ways. These effects are known as the zero effect and the span effect.
The first effect occurs with zero input differential to the cell. In this case, the effect of the static pressure on both the high and low side tend to cancel each other. The slight remaining shift in output is called the static pressure effect on zero or zero effect. While the maximum magnitude of the zero effect is predictable, its direction a not. However, the effect is repeatable for an individual transmitter and can be eliminated by simply re-zeroing the transmrtter at line pressure.
To understand the second effect of static pressure, called the span effect, it is necessary to understand theinnerwortongs of the 6-ceff.
The 6-cell is a variable capacitance device. In the cell. differential pressure moves the sensing diaphragm between two fixed capacstor plates. See Figure 1. The varying capacitance between the sensing diaphragm and the plates is converted electronically to a 4-20 mA de output that it is directly proportional to the differential pressure.
In the actual cell design the sensing diaphragm is stretched between the fixed plates and welded tothe cylindricalbodvof the cell. ,
When high pressure is applied to both sides of the cell a slight deformation takes place, increasing tension radially in the sensing diaphragm. See Figure 2. The net effect of the increased tension is that the sensing diaphragm moves away from its nearer wall or em.amewar plate. (this only happens at pressures other than zero r0fferereal pressure). As the static pressure increases, the tension increases causing a greater movement of the diaphragm. The movement of the diaphragm is always toward the zero differential pressure, or center posstiort With this in mind you can see *he effect is to decrease output as static pressure is increased. In other words as static pressure increases, a slightly higher differential pressure is required to move the sensing diaphragm a given amount.
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- P g,g When zero ta elevated, or o higher pressura o apphed to the low side thin to the high side, th2 cffect O to increase output as state pressure incr:ases. This o casser to understand if you r:memoor that in an etevated zero sstuation the positen of the diaphragm at 4 mA is to the left of center. Note Figure 2. As process oifferential pressure increases, the diaphragm moves back toward the center
^ position. The radial tenson created by the static pressure causes the diaphragm to move even closer to the center position, thus increasing output.
The shstt is called the static pressure effect on span or span effect, and is systemate or prodctable, repeatable, and linear. Because the effect is systemate it can be cahbrated out for any grven state pressure and cahbrated span. Testing done at Rosemount Inc., using a DeGranges differential dead-weight tester, and by others has confirmed the correction factors Ro$ smount Inc. specifies. There is an uncertainty associated with the correction. but this uncertainty is .ypecally less than the pubhshed specifcaton of ::: 0.5% of reading per 1000 psi.
SPAN CORRECTION SAMPLE PROCEDURE The following is an example of how to correct for the effect of static pressure. The correction procedure uses the case of a Range Code 5 calibrated -100 inh 2O to + 300 inh O 2 with 1200 psi hne pressure.
Note that steps 2 5 are omitted for ranges based at zero differential pressure. From the instructen 1 manual, the correchon factor for Range Code 5 is 0.75% of input per 1000 psi static pressure. To j start, use the standard calibration procedures to calibrate the urut so that its output is 4 mA at -100 in, and 20 mA at +300 inh 0. 2 Then use the following procedure to correct for the state pressure effect.
- 1. Calculatecorrectioniactor:
0.75%/1000 psi x 1200 psi = 0.9% of differentialpressure input.
- 2. Calculate 4 mA or zero point adjustment correcten in terms of pressure: 0.9% of -100 inh2O
= -0.9 inh 0.
- 3. Convert zero point correction from pressure to percent of input span: -0.9 inh 0/400 2 in. input span = -0.225% span.
- 4. Calculate zero point correction in terms of output span (mA): -0.225% of 16 mA span = -0.036 mA.
. 5. Arithmetacally add zero correction to ideal zero output (4 mA). This is the corrected ideal zero l output. 4.00 mA - 0.036 = 3.964 mA.
- 6. Calculate full scale or 20 mA point adjustment correction in terms of pressure: 0.9% of 300 inh2 O
= 2.7 inh2 0.
- 7. Repeatstep3withthe resultsof step 6: 2.7in.per400in.inputspan = 0.675% span.
- 8. Repeatstep4usingtheresultof step 7: 0.675%of16mA = 0.108mA.
< 9. Anthmetically add full scale correction to ideal full scale output (20 mA). This is the corrected idealfullscaleoutput: 20.00mA + 0.108 = 20.108 mA.
- 10. Readjust zero and span adjustments for corrected outputs:
3.964 mA at - 100 inh2O 20.108 mA at + 300 inh2 O ZERO CORRECTION The static pressure zero effect can be tnmmed out after installation with the unit at operating pressure.
Equahze pressure to both process connectons, and tum the zero adjustment until the ideal output at zero differential input is observed. Do not readjust the span pot. This completety ehminates the zero effect of line pressure. Please note that re-zeroing the transmitter vnll shift all of the calibration points the same amount toward the correct reading.
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STATIC PRESSURE EFIECTS ON ROSEMOUNT NUCLEAR TRAEMITTERS ZERO EFFECT CORRECTION PROCEDURE 7^>*
The zero effee (or zero shstt) assocasted with a starc line pressure applied to a drfferential transmmer vnll be repeatable for a given transmater, and can be etwninated by simply re zeroing the transmeer at hne pressure wnh zero DP across the una.
N howevet the transmeer does not include zero DP wthin its calbrated span, the zero effecs or zero correa on can be determined before the und is suppressed or elevated to eliminate the zero effect after correctmg tot the span effect.
The follounng procedure Ilustrates how to eliminate the rem efied for a non-zero DP based calibraten. The enample uses a Range Code 5 caibrated 100 inh;O to 500 inh2O wth 1200 psi static line pressure.
- 1. Using standard calbration procedures calbrate the una to the recured span, with the 4 mA or 2ERO point corresponding to zero DP:
4 mA at 0 hH2O and 20 mA at 400 inh2O
- 2. Apply stasic pressure to both H and L process connectens wth zero DP across the transmater, and note the zero correction (Zero shot). For example,if the output reade 4.006 mA the zem correcsion is =Wdead as:
4.00 mA 4.006 mA = 0.006 mA Note the sign a-mad with this correction as this result wil be algebracally added when determaning the final, ideal transmstter output.
- 3. Remove static pressure and correct for the span offed by fotowing the procedures as outlined in the transminor instructen manual Recnibrate the urut to the enhdatad output values. E, for example, the span correcaen procedure yielded 4.029 mA and 20.144 mA, calbrate the una lor:
4.029 mA at 100 hH2O pA O ,
4.
20.144 mA at 500 inh2 O Nort, algebraicaby add the zero correction found in Step 2 ( 0.006 mA) to the ideal zero point value
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4.029 mA + (-0.006 mA) = 4.023 mA
- 5. To eliminate the zero effed readjust only the zero pot so that the ouput roads the ideal zero point calcuisted
, in Step 4 (do not readjust the span pot). Note that as the cambraten poets wis shlet the same amours toward
- < the correct reading. The exampie output is now 4.023 mA at 100 inh 2 0.
The transmater output will row be 4 20 mA over as caibrated span when the unit is operated at 1200 psi static Ene pressue. There is an uncertainty assocated wth the span correcuon, but this is typecany less than the pubished specicaten of i 0.5% of reading per 1000 pet.
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'elephone Call Copies By ,Neil Archambo of Bechtel To Tim Layer of Rosemount Date June 16, 1993 Time 10:00 am Subject Rosemount Model 710DU Trip / Job No. N/A Calibration Unit Specifications File No. N/A Mr. Layer was contacted in order to clarify the specifications listed in the Rosemount Trip / Calibration System Model 7100U Operations Manual.
Clarification was required for the following:
- Master Trip Unit (MTU)
Analog Output Accuracy (Normal Conditions) 1 Trip output Repeatability (Normal Conditions)
- Slave Trip Unit (STU)
Trip output Repeatability (Normal Conditions)
- Calibration Unit Accuracy - . .
The equation listed for the MTU Analog Output Accuracy.is as follows:
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10.15% (60' to 90*F) to.35%/100*F
- IAccording to Mr. Layer, the above equation is to be used in the following manner:
- For ambient temperatures in the range of 60* to 90*F, Analog Output Accuracy = 10.15%(SPAN)
- For ambient temperatures above 90*F, Analog Output Accuracy = 1(0.15%(SPAN) + (0. 3 5%) (SPAN) /100
- F) ( AT) )
0 AT = Ambient Temperature - 9.*F Where:
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For example, suppose the ambient temperature at the trip unit location is 120*F. The associated trip unit analog output accuracy would be:
Analog Output Accuracy = 1(0.15%(SPAN) + (0. 3 5%) (SPAN) /100
- F) (AT) )
Analog Output Accuracy = 1(0.15%(4 Vde) + (0.35%)(4 Vde) /100
- F) ( 3 0
- F) )
Analog Output Accuracy = 10.0102 Vdc The trip output repeatability for both the MTU and STU is calculated in the
.msnner listed above. The equations are clarified below for ambient tsmperatures above 90'F:
MTU Trip Output Repeatability (MTUma):
MTUma = (0.13%(SPAN) + (O.2%) (SPAN) /100*F) (AT))
STU Trip output Repeatability (STUma):
STUma = (0.2%(SPAN) + (0. 35%) (SPAN) /100
- F) (AT) )
In addition, Mr. Layer stated that the trip setpoint repeatability cquations
' listed above include reference accuracy, temperature affects, and
, f t. The equations are accurate for 6 months. Based on calibration
,cedure DI3 1400-02, the. trip units are" calibrated every three months.
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Ohowever,Mr.Layerstatedthattheerrorswouldnotbereducedby calibrating more frequently than 6 months. - --
The MTU and STU trip setpoints are calibrated using the calibration unit supplied with the Model 710DU. Mr. Layer stated that errors associated with the calibration unit are included in the repeatability error equations listed above. Therefore, no additional error evaluations are required for the calibration of the MTU and STU.
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[He c4%cd 3~% Tess a3100$0 Fasf6t?'681 e m September 30,1993 Mr. Victor Shah Signals & Safegaurds 3375 N. Arlington Heights Road Suite C Arlington Heights, IL 60004 Subj: Nuclear Qualified Instrumentation Confidence Levels Ref.: June 24,1991 Letter to E. Kazemarski of Commonwealth Edison
Dear Mr. Shaw,
The above referenced letter directed to E. Kazcmarski of Commonwealth Edison Co. was issued to state the confidence levels of Rosemount nuclear qualified pressure transmitter and nuclear qualified trip / calibration system specifications.
As we discussed, one correction and one clarification to the information supplied in the O
V .
letter is required.
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The correction to the above referenced letter is that the Model 510DU and/or 710DU Trip / Calibration System performance specifications should be considered a two-sigma confidence specification. The reason is that the Trip Point Repeatability Specification is a
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time-based specification over a six month period. Since Rosemount does not test 100% of trip units over a six month period to verify compliance with the specification, and since the qualification testing used a statistically small sample size, we cannot state a three-sigma confidence.
The clarification required involves the Model 1154 Series H Transmitter Ambient Temperature Effect Specification. The Model 1154 Series H has two Ambient Temperature Effect Specifications as follows:
Three-sigma:
(0.75% URL + 0.50% Span) per 100 F over the Range 40 to 200 F.
Two-sigma:
1(0.15% URL + 0.35% Span) per 50 F over the Range 40 to 130 F. l
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Performance Specifications O 09/30/93 Page 2 As we discussed, Rosemount issued a 10CFR21 notification alerting users of Model 1154 Series H Transmitters that some units may not meet the two-sigma Ambient Temperature Effect Soccification. All units met the three-sigma specification. The 10CFR21 notification listed a interim specification which should be used until more detailed evaluation is completed by Rosemount (Reference Notification dated May 27,1993).
The corrective action Rosemount is implementing in response to this issue is to review the production data for all transmitters shipped to determine; 1.0 Units meet the two-sigma specification 2.0 Units meet the interim specification 3.0 All Diw Production units (100%) will be tested to the two-sigma specification, thus, resulting in a three-sigma confidence for new units ordered.
- The evaluation of data for units shipped to the LaSalle Station should be completed in the next two weeks. Results will be issued to Mr. Seckenger at LaSalle and CECO Engineering.
Sincerely,
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/ Timothy J. Layer Sr. Marketing Engineer ,
l Rosemount Nuclear Products ,
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COMED NUCLEAR DESIGN INFORMATION TRANSMITTAL
- SAFETY RELATED Ongmatmg Organaabon NDIT No.: LAS-ENDIT-0536 O NON-SAFETY RELATED Sechon ICPED Upgrade: 0 0 REGutAroRyREtATED Company: Sargent & Lunoy Page 1 of 2 Stenon: LaSalle County Unas: 1 System: To: Shan. v* rem - Comed.
Desagn Change Authoney No N/A RT subfect.
Setpoet with new flow trenommer and tno una m RWCU Recre Line Byskosh. Roman E. Pro,ect Engmoer p
- - - ,N, 11/8/97 Fionen. Robert A. Pro,ect Engmeer / M, k Gilautre. Vmod K.
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11/8/97 Sensor Protect Engmeer C d 'LA , 11/10/97 Status of information O Approved for Use O Unv.nned v.nneshon Method N/A
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O Enemeennesuagement Scheduis:
Purpose of leeuence Perform setpoent ceiculebon to support the addsbon of RWCU high flow matrummentebon in accorcance unth
,. $ DCP 9700532. ECNs 001388E (ESSI) and 001369E (ESS2).
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- 1 Source of informanon
- 1) Venoor Drawmg (Spec. J2961) 739271. -21. Rev.1
Tabis 3.116 (Rx Bldg.). Figure 3 11 - 1.3.11 - 3 Descr6ption of Information The followng flow monnonng metruments are being acced to improve the response time for detochng and isolatmg a brook in the RWCU Recirculation Lme for EQ purposes.
Instrument Manufacturer Model No Locaten Elec. Dev. EQ Zone Trensmater Rosemount 1154 DH SR 1H22-P010 1 H4A (FT 1G33-N041A) (Rx Bldg)
(Elev. 710'-6")
(Col.14-E)
Master Tnp Rosemount 710 DU 1H13-P629 1 C1B Una (AEER)
(FS-1G33-N609A)
Disenbunon SEAG Jones. Gary C - & Lundy, Gilausra. V Sartrent & Lwaty.lCPED M-A ./ L P. Comed. DE E Microfilming S&L Home Office WIN No.: 2560
L=onmids "t v 91 FT4 A L _
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l COMED NUCLEAR DESIGN INFORMATION TRANSMITTAL O SAFETY-RELATED Onginonng Organsecon l
NDIT No.: LAS-ENDIT-0536 O NON-SAFETY-RELATED Seccon ICPED Upgrade O C REGULATORY RELATED Company- Sergent & Lundy Pope 2 of 2 Trenommer Rosemount 1154 DH SR Lacesy Med 2 H4A (FT 1G33440418) next to 1H22 P010 (Reactor Bedg)
Meeter Tnp Rosemount 710 DU 1H13JMI31 2 C1B 4 Unit (AEER)
(FS-1G3Md60g8)
The snelyacalImt hoe been est et 600 gpm et normat opereeng meet procese condeone. The been for the imt a to detect brook now pnor to exceedmg eroe EQ kmee, but hqph enough to evous opunous acausbone donng system transente
{ .,g gu'a Per er.. ce 1, the procese colerated DP at 1020 PSIA & 533 Dog. F we be approzamency 0-200 in WC correspondag to e flow of 0 -
700 grn The flo. ..mstonng instrument loop wdl be celeroned every refuse cyces.
The metrument loop is conosdored - ' . -, .
and hee to be operoids fonounng a doesgn been occusent.
The EQ zones are estabhehod por Source 2.
DP o Der now is 101.ar in wC correspondang io 500 gom. Th. done not incasde com.cnm fa, nign nn. -
1 Comed - Nuclear Operations Disivion
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COMED NUCLEAR DESIGN INFORMATION TRANSMITTAL O SAFETY-RELATED Onginabng Orgsmratson NDIT No.: LAS-ENDIT-0536' NON-SAFETY-RELATED Secten. ICPED Upgrace. 2 O REGULATORYRELATED Company: Sagent & Lundy Page 1 of 1 l
S'.auorr LaSalle County Units: 1 System: To: Shah V% ram Comed, l l
Desen Change Authonty No g700532 G33 I RT Revned AnaWeal Limit for RWCU hgh flow monrtonng mstrumentabon (tnp unit instrument numoers 1G33-N609A and B) setpomt calcu'.atson. '
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Dyskosh, Roman E.
ausarer Project Engmeer Panam
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'sy/ f 3/4/98 Dew Fenan. Robert A. Project Engmeer Pan ==
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3/4/98 oss
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w G.lautta Vnod K. Sensor Protect Engmeer M G 3/g/98 Posem syuus g obw Status of information: - Approved for Use Unvenfied Ven6caton Method N/A Engmoenng Judgement Schedule:
Purpose of lasuance Prowde a revned Anatytcal Lsmit to update setpoint calculaten for the RWCU high flow monsonng instrumentabon. Th:s is done in orcer to ensure wdh a high cegree of certainty tnat there exists a sufficent margen between the RWCU high fbz ;:alibrabon setpoint and the upper now values for all posstbe RWCU system moces of operaten including a cold RWCU pump start-up, pump swap and swd@mg fifters/demmeraltrors.
Source of information j CaJcuta' bon No. L-001384, Rev. O, Reactor Building Environmental Transent Condnions Fouoneg RWCU and RCIC HELBa, Page 122.
l Description of information The n= sed RWCU high now Analytica1 Lsmit, based on the referenced calcuaton, rs 650 gpm or less The exisbng Analybcal Limit of 600 gom, wn;-h is presently used in the exrsting RWCU nigh flow setpomt calculaton should be replaced wth the new value of 650 gpm and the setpoir t calcuaton updated accordegry. The Anatyt2 cal Lima of 650 ppm will provide the maximurn possible margm between the RWCU hva flow ca - a. bon setpont and the upper fiow values for all posseie RWCU system moons of operaten.
Dastnt>ution: SEAG 3 anes, Gary C . Sargent & Lundy, Gdastra, Vinod K.- Sargern & Lundy ICPED Comed Microfilmms LaSmile Win File Gremchuk, Russell A. . Corned, SYS Mallevarapu Louis T. - Sargent & Lundy as Co W1N No.: 2560