Procedure AP/1/A/5500/31, 'Estimate of Failed Fuel Based ...

. _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ --

,

* Form 349h2 (8-82i O O .

PAGE NO.CNS

AP/1/A/5500/31 TABLE OF CONTENTS

_.

Pace No.t

\

| A. Purpose 1

B. Symptoms 1

C. Immediate Actions 2

D. Subsequent Actions 2

Endosure 1 5

Enclosure 2 6

!|

|

Li

.

8402130422 840207.PDR ADOCK 05000413A PDR

7.--.-.,..._ .. - ... - . . . . _ . . . . . . . _ _ _ - . . _ . . . . . . . . ._ f_ _ _ _ _ _ _ _ _ _

_ _ _ _ _ - _ _ - _ _ _ _ _ _ _ _

_

'Fortn 34913 (8 82) Q, h. .

.%' PAGE NO.

CNS ESTIMATE OF FAILED FUELAP/1/A/5500/31 BASED ON 1-131 CONCENTRATION 1

1

ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED

A. PURPOSE

The purpose of this procedure is to provide a means of determiningthequantity of failed fuel based on 1-131 Concentration in the NCSystem.

B. SYMPTOMS

1. Any of the follow;ag EMF's in alarm:

a. 1 EMF 48 " Reactor Coolant Monitor"b. 1 EMF 18 " Reactor Coolant Filter 1 A"c. 1 EMF 19 " Reactor Coolant Filter 1B"

2. Any condition in which the operator suspects failed fuel or* 'want an

estimate of the amount of failed fuel.

.

I e

i

3

_ _ - - - _ -- _ _ --- _ _ __--__- - - - - - - - _ _ _ _-.~.~....-._...---A-.--~..n,-- . -.n. .....e..,__..---,. .

w

- _ - _ _ _____ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

'

. Form.34013 (8-8h_

I PAGE NO.CNS ESTIMATE OF FAILED FUEL

AP/1/A/5500/31 BASED ON l-131 CONCENTRATION 2i

l

ACTION / EXPECTED RESPONSE-

- RESPONSE NOT OBTAINED

C. IMMEDIATE ACTIONS

1. Have Chemistry Obtain A Sample OfThe NC System Coolant and determinetemperature of sample.

D. SUBSEQUENT ACTIONS

1. Have Chemistry Sample For 1-131,Krypton, Xenon, Cesium, Ruthenium AndTellurium.

2. Record Concentrations Of Above RadionuclidesAnd Sample Temperature on Enclosure 1.

3. If I-131 Concentration is Greater Than300 uCl/ml, Refer To RP/1/A/5000/01

(EMERGENCY CLASS DETERMINATION).,

4. If lodine is Present And The Unit is inA Normal Operational Mode, Go To 8.

5. If Krypton Or Xenon Are Present But OnlySmall Amounts Of Cesium And An AbnormalTransient Or Suspected Mechanical inducedFailure (i.e. , Loose Part) Has Occurred,Go To 11.

6. If Krypton Or Xenon And Large ConcentrationsOf Cesium Are Present But Ruthenium AndTellurium Are Not And Incore ThermocouplesHave Read High For A Short Period Of Time,Go To -13.

7. If All Of The Above Radionuclides Are PresentAnd incore Thermocouples Are High For A LongPeriod, Go To 15.

8. Determine The X And Y Correction FactorsFrom Enclosure 2.

r_

--- ..w.=~ ..-.......w....-.....-- . - . . -....--%,.-..-.~. . _ . . -

'' ' . __ _ _ - - _ _ - _ _ _ - _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ __._m_______. _ _ _ _ _ _ _ _ _ _ _ . _

Form.14913 (8%2) h. .

, .

/ PAGE No.

CNS ESTIMATE OF FAILED FUELAP/1/A/5500/31 BASED ON 1-131 CONCENTRATION 3


9. Calculate Tite Amount Cf Failed Fuel UsingThe Following:

Number of _ Measured 1-131

Failed Pins Concentration uCi/mi ' X Y + 3.5 x 10-3*

Ci/mi

( )* +*

Percent : Measured 1-131

Failed Pins Concentration uCi/mi * X *Y+ 1.8 4Ci/mi( )-

-= +. .

. .

10. Go To 16.


Calculate the , amount of failed fuel usingthe following:' *

Number of Measured 1-131=

2Failed Pins Concentration uCi/mi ' X Y + 16.5 x 10'*

Cl/mi

( )* _ +*=

Percent : Measured 1-131

Failed Pins Concentration uCi/ml * X Y + 83.7 di/mi*

( )* +*:

12. Go To 16..

_ _ _ _.. _ ___ _ _ _ . . . . . . _ _ . . . _ _ _ . _ _ _ . _ _ . - _ . . . _ . - . . . . . . -___

_ - _ _ _ _ _ _ _ __ _ _ _ _ _ _ _

,

' ~

- Form'34913 (8-82) hi) ,

PAGE NOCNS ESTIMATE OF FAILED FUEL

AP/1/A/5500/31 BASED ON 1-131 CONCENTRATION 4



Calculate the amount of failed fuel usingthe following:

Number of Measured 1-131=

Failed Pins Concentration uCi/mi * X * Y + 2.5 + Ci/ml( ) __ * +=

Percent : Measured 1-131Failed Pins Concentration uCi/mi * X Y + 1535 di/ml*

( )* __, e*

14. Go To 16.


Calculate the amount of failed fuel usingthe following:

Number of Measured 1-131,

Failed Pins Concentration uCi/mi * X Y + 5.5 *Ci/ml*

( )* +*:

Percent : Measured 1-131Failed Pins Concentration uCl/ml * X Y + 2790 .uC1/mi*

( )* :*=

16. Refer To Tech Spec 3.4.8 a. Refer to appropriate TechAnd Ensure 1-131 Activity Spec Action Statement.Is Within Guidelines.

17. Inform The Shift SupervisorAnd Performance Section DutyEngineer of The Results OfThis Procedure.

-END-,.

w --9-mem m we -~ww c-m e w e am _ n ,-,..m,.-,

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ . . _ - - - _ _ _ _ - _ _ _ _ _ - - _ _ _ - - - _ _ _ _ - - - - - - - _ _ _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ._. . . . , . - - . .. . ,..w , . , , , , _ , ,

______. - - - - - - - - - - - - -

', Ftrm 34912 (8-82) . h ;,'

-. s -

PAGE NO.CNS

AP/1/A/5500/31 ENCLOSUREI 5

|-131 Concentration uCi/mi

uCi/ gram

Concentration Initial /Date

Krypton /

Xenon /

Cesium /

Ruthenium /

Tellurium /

SampleTemperature /

.

1 e

,

>"'-Wa*- p 5-***= % 4 .%.. . . . - - %,. _.m. .m., .,,,,,__,m,, , , . . , , , ,

-----mm--. _. _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ _ __ _

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

Form 14912 (6-82) *

@' @OL- 0 + j PAGE NO.v

CNSAP/1/A/5500/31 ENCLOSURE 2 6

1. X Determination

NC SAMPLE TEMPERATURE F

80 90 100

100 .996 .998 1.00150 .983 .985 .987

NC 200 .966 .968 .970250 .945 .947 .949

System 300 .921 .923 .924350 .894 .895 .897

Temperatu re 400 .862 .864 .865450 .827 .828 .830

*F 500 .787 .788 .790550 .739 .740 .741560 .728 .729 .731570 .717 .718 .719580 .706 .708 .708590 .603 .694 .695600 .680 .681 .683

2. Y Determination

if power change is less than 10% within 22 days

Y= 100% F.P. at time of failure

Other times

Y= 100

OP (e M)+ NP (1 - e-th-

y

Where: .

Y = Correction Factor

OP = The % Full Power Before The Power Change

NP = The % Full Power After The Power Change At Which Time TheFuel Failurs Has Occured

. . . . . _ _ . . _ ___- . . _ _ . _ _ . _ _ . . _ _ _ . . _ _ _ _ . . . . . . _ . _ _ . . _ . __.. . . _ . . _ . _ . . . _.3_

,-,

o. Form 349b (8-82) - . h , ' ,-n. .

PAGE NO.CNS .

AP/1/A/5500/31 ENCLOSURE 2 7

I

. _ _ .

3 = Decay Constant For I-131 --- 0.0864 day 'I

t = One Half The Time To Make The Power Change Plus The TimeAfter The Power Change Until Damage is Suspected. (in Days)

i.e. 2 Hours For Power Change And 16 Hours To Damage.

t = 2 + 16 = 17 Hours = .708 Days2

' :, 1 .

<

J

+++w.. a *. e.=.w.o== -, -me-m * w- *-ee - * + = + = -* *= * -= = * * * *--''Nm

Procedure AP/1/A/5500/31, 'Estimate of Failed Fuel Based ...

Documents

Transcript of Procedure AP/1/A/5500/31, 'Estimate of Failed Fuel Based ...