ML19331B916

Instrument Error Analysis for Fort Calhoun Containment Leak Rate Test:Jan 1980.

ML19331B916
Person / Time
Site:	Fort Calhoun
Issue date:	07/11/1980
From:	Noland C, Novgrod R, Rowley C NUCLEAR SERVICES CORP.
To:
Shared Package
ML19331B914	List: ML19331B913 ML19331B916 ML19331B921
References
NUDOCS 8008130525
Download: ML19331B916 (5)

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INSTRUMENT ERROR ANALYSIS FOR FORT CALHOUN CLRT a

.- January 1980 Prepared for

, 5 Omana Public Pow'er District 1

-_ By i Nuclear Services Corporation 2622 E. 21st.' St. l Tulsa, OK 74114 1

(918)749-2582 Prepared _by: R.L. Novgrod

. Reviewed by:

Approved by: C.B.Noland(,,,d-c C.W. Rowley f ,

July 11, 1980 OMA-0110 T-8068130 -DD . .. - . - - . . . .

l ".

v .

.l" INSTRUMENT ERROR ANALYSIS I. Instrumentation A. Pressure Digital Readout

, Inst # PI-1, PI-2 Mfg Mensor Corp.

Type Bourdon Tube Capsule & Precision Pressure Gage Range 0-100 psia

$ Stability i .002 psi I Repeatability 1 0005 psi Resolution i .001 psi

. Accuracy i .015 psi 1i B. Teiaperature Elements Inst # T-001 through T-030

Mfg 1 Hy-Cal Engrg

.1 Type 100 0 Platium RTD Range Calibrated for 60 , 85 , and 110 F

- . Repeatability &

4 Hysteresis + 0.1 F Accuracy [0.02F C. Dew Point Measurement System Inst # DPT-31 through DPT-40 Mfg Volumetrics

• t Model Dewcell .

~

Range Calibrated for 50 , 80 , 100 F -

_. Accuracy 1 00726 psi Repeatability. 1 002 psi Stability (for threedays) 1 00006 psi F,

H D. Readout System i.- Mfg Data logger Model 3000~

accuracy + .19 F + .0024 psi repeatability T .05 F T .0006. psi i stability [.05F 1 0006 psi

E. Flow Measurement System Inst # FI-l Mfg Fisher-Porter

. Model 087-615-588 Calibration .4 to 4 scfm of air 0 60 psig & 80 F Accuracy + 1% of full scale

, c-II. Formula EL = 100 ?p{py+2) +2t py a

~'

where:

EL = error in leakage rate in % by weight per day Ep = pressure instrument error po. inst.

j .. .

= error in total absolute pressure in psia ET =. temperature instrument error no inst.

= error in temperature in 'R Ey = vapor pressure instr 3 ment error no. inst.

= error in water vapor pre-ssure in psia

~

Assuming: ..

~

A. Initial and final temperatures are identical B. Initial and final pressures are identical III. Calculation of E p E =

(repeatability)2 + (resolution)2 + (stability)2 p

1. of senors

=

( .0005)2 + ( .001)2 + ( .002)2 2

= 1 6 202 x 10-3 psi 1

L- __

'. e f:

1 IV. Calculation of E T (repeatability)2 , (repeatability of)2 , [ stability of)2 E = f RTD data logger data logger

._. T

1. sensors

, (.1)2 + (.05)2 + (.05)2 30 Q

= .02236 F V. Calculation of E y

• Y stability

("E** *ofdetector) + (o*f detector)+ (of readoutrepeatability)2 , (of readou

=

E V

1. of sensors

, (.002)2 + (.00006)2 + (.0006)2 + (.0006)2 9

=

J .00072 psi VI. Calculation of E L -

/

Et = 100 2 py)2 =2 +2(ppy)2 2 6

= 100^

2(.00 +2(*0 - 30 +2(.00 2)2= .0068% by wt/ day I

i

?

P I

VII. Calculation of E p Standard conditions for the flowmeters are defined as 14.73 psia and 60 F.

4' = .04 scfm FlowmeterAccuracy=I{00 Flowmeter Error = E F =P 60 T T

• 9-Pv

• 601.05 x 24 x 100 x .04 x 106 l-80

, 60 + 14.7 76 + 460 80 + 460 x 75.107 .143 x .137 x .04 = .0054 4

1 VIII. Calculation of r /-

E'=EL+Ep = .0068 + .0054 = .0122% by wt/ day o

N 2

em k

L m

W W

t

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