ML040790060

Facility Post-Examination Comments for the Kewaunee Initial Examination - February 2004

ML040790060
Person / Time
Site:	Kewaunee
Issue date:	02/02/2004
From:	Lanksbury R NRC/RGN-III/DRS/OLB
To:	Coutu T Nuclear Management Co
References
50-305/04-301
Download: ML040790060 (27)

Text

FACI LlTY POST-EXAM1 NATION COMMENTS FOR THE KEWAUNEE INITIAL EXAMINATION - FEB 2004

Cornmiffed to 65 Kewaunee Nuclear Power Plant Operated by Nuclear Management Company, LLC Enclosures (4)

Option 1 -- Delete the question Option 2 -- Accept two correct answers 40 NRC-04-027 February 26,2004 Regional Administrator, Region 111 U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532 - 4351 KEWAUNEE NUCLEAR POWER PLANT DOCKET 50-305 LICENSE NO. DPR-43 OPERATOR LICENSE EXAMINATION In accordance with the requirements of NUREG-I 021 and recent conversations with Wyatt Godes of our staff, the required written examination facility comments are enclosed.

After Reviewing The RO/SRO Written Examination Administered Thursday, February 5, 2004, at the Kewaunee Nuclear Power Plant, the facility has identified one question that requires action. Due to an oversight, we did not identify the inadequacy of the question prior to exam administration. For this reason, along with the supporting documentation, we request the following:

SRo I

RO I Exam# 1 Exam#

Comment We apologize for any inconvenience this may cause and hope to eliminate errors of this nature in the future. Thank you in advance for your consideration.

Thomas Coutu Site Vice President, Kewaunee Nuclear Power Plant Nuclear Management Company, LLC Enclosures cc:

Senior Resident Inspector, Kewaunee, USNRC N490 Highway 42 Kewaunee, Wisconsin 54216-951 1 Telephone: 920.388.2560

ENCLOSURE 1 NUCLEAR MANAGEMENT COMPANY, LLC KEWAUNEE NUCLEAR PLANT DOCKET 50-305 February 26,2004 Letter from Thomas Coutu (NMC)

To Regional Administrator, Region Ill (NRC)

Written Examination Facilitv Comments 1 Page Follows

Docket 50-305 February 26,2004, Page 1 NRC-04-023 Question:

RO-65 / SRO-40 (Reactor Building Ventilation) --

A LOCA has occurred. Post-LOCA containment hydrogen concentration is 7%.

What method is available to address hydrogen control in the containment?

a. dilute the containment atmosphere.

b. place the Hydrogen Recombiner in service.

c. vent containment through the Shield Building Ventilation System.

d. spray containment using the containment spray pumps.

Recommendations:

Option 1 --

Delete this question, as there are no correct answers per BKG E-I.

Since there is no cueing with respect to elapsed time, the stem of this question leads the candidate to believe that a LOCA is in progress. In this case, the first time the operator will address containment hydrogen is step 23 of E-1, LOSS OF REACTOR OR SECONDARY COOLANT. Once the hydrogen concentration is determined to be greater than 6% IN DRY AIR the operator is directed to Consult with Emergency Director for additional recovery actions. GO TO Step

24. As the operator refers to BKG E-1 LOSS OF REACTOR OR SECONDARY COOLANT, there is guidance that states If the concentration is greater than 6.0 volume percent in dry air, the operator is instructed to consult with the Emergency Director. No other operator action is appropriate at this point pending evaluation by the Emergency Director and plant engineering staff.

Based on this given information the operator would wait on the decision of the Emergency Director. This answer is not a choice therefore there is no correct answer.

Option 2 --

Accept both a and b as they are both options provided in N-RBV-18C.

Assuming that the Emergency Director and plant engineering staff direct the use of N-RBV-18C POST-LOCA Hydrogen Control, there are two plausible choices based on conditions given in the stem. Referring to section 2.0 of N-RBV-18C step 2.3, Ij hydrogen concentration in Containment is 20.5% by volume, place the Hydrogen Recombiner in service, OR dilute Containment atmosphere.

Based on this information accept a and b as correct answers.

ENCLOSURE 2 NUCLEAR MANAGEMENT COMPANY, LLC KEWAUNEE NUCLEAR PLANT DOCKET 50-305 February 26,2004 Letter from Thomas Coutu (NMC)

To Regional Administrator, Region Ill (NRC)

Emergency Operatinq Procedure E-1 Loss of Reactor or Secondary Coolant 1 Page Follows

~

E-1 WISCONSIN PUBLIC SERVICE CORPORATION NO.

OPERATOR ACTIONS EMERGENCYOPERATINGPROCEDURES I DATE APR 30 2003 I PAGE 14 of 14 CONTINGENCY ACTIONS 22 Determine I f Reactor Vessel Head Should Be Vented:

a. Consult w i t h Emergency D i r e c t o r

b. Refer t o FR-1.3, RESPONSE TO V O I D S I N REACTOR VESSEL 23 24 Check Containment Hydrogen Concentration :

a. Obtain r e s u l t s o f hydrogen c o n c e n t r a t i o n measurement from Chemistry.

b. Hydrogen c o n c e n t r a t i o n - LESS THAN 6% I N DRY A I R

c. Hydrogen c o n c e n t r a t i o n - LESS THAN 0.5% I N DRY A I R Evaluate Long Term Plant Status:

a. Consult w i t h Emergency D i r e c t o r

-END-

b. Consult w i t h Emergency D i r e c f o r a d d i t i o n a l recovery actions.

GO TO Step 24.

c. Decrease hydrogen c o n c e n t r a t per N-RBV-18C. POST-LOCA HYDROGEN CONTROL.

o r on

ENCLOSURE 3 NUCLEAR MANAGEMENT COMPANY, LLC KEWAUNEE NUCLEAR PLANT DOCKET 50-305 February 26,2004 Letter from Thomas Coutu (NMC)

To Regional Administrator, Region Ill (NRC) lnteqrated Plant Emerqency Operatinq Procedure Backqround Document BKG E-1 Loss of Reactor or Secondarv Coolant 2 Pages Follow

WISCONSIN PWLIC SERylcE CORPORATION I No- 'KG E-KEWAUNEE NUCLEARPOWERPLANT I

LOSS OF REACTOR OR SECONDARY COOLANT IPEOP BACKGROUND DOCUMENT DATE AUG 28 2003 PAGE 5 1, of 70 STEP:

Check Containment Hydrogen Concentration:

PURPOSE: To obtain a hydrogen concentration measurement t o determine f u r t h e r a c t i o n s t o be taken I

BASIS:

I T h i s s t e p i n s t r u c t s t h e operator t o o b t a i n a c u r r e n t hydrogen concentration measurement.

concentration, the operator w i l l e l t h e r r e t u r n t o t h e procedure i n e f f e c t, t u r n on t h e hydrogen recombiners i f a v a i l a b l e. start up t h e Post LOCA Hydrogen Control System, o r n o t i f y t h e p l a n t engineering staff t o determine appropriate a c t i o n s.

If inadequate core cooling h a s occurred during t h e e v e n t, the containment hydrogen concentration may be as much as 10 t o 1 2 volume percent.

depending on t h e amount of metal-water r e a c t i o n ( t o produce hydrogen) t h a t has occurred i n t h e core.

s i n c e a flammable mixture can burn, i f an i g n i t i o n source is a v a i l a b l e.

and cause a sudden rise i n containment pressure which may challenge containment i n t e g r i t y.

containment hydrogen concentration measurement a t t h i s point i n order t o a s c e r t a i n t h e p o t e n t i a l flammability of t h e combustible Containment.

hydrogen concentrations, an inadequate core cooling s i t u a t i o n must have a l r e a d y existed.

Without an inadequate core cooling s i t u a t i o n.

s u f f i c i e n t hydrogen would not be expected t o have been produced t o cause p o t e n t i a l l y flammable mixtures.

I I

I Depending upon t h e magnitude o f t h e hydrogen I

The hydrogen concentration is of concern The operator i s i n s t r u c t e d t o o b t a i n a c u r r e n t gases i n t h e Note t h a t i n order t o have t h e p o t e n t i a l f o r flammable

LOSS OF REACTOR OR SECONDARY KEWAUNEENUCLEARPOWERPLANT COOLANT IPEOP BACKGROUND DOCUMENT STEP DESCRIPTION TABLE FOR E-1 (cont)

STEP 23 A determination is made of the flammability of the hydrogen mixture with respect to the possible containment pressure rise.

mixture is between 0.5 volume percent and 6.0 volume percent in dry air, either no hydrogen burn is possible o r a limited burn may occur which does not produce a significant pressure rise. In this case the operator is instructed to start the Post LOCA Hydrogen Control System to slowly reduce containment hydrogen concentration. If the hydrogen concentration is less than 0.5 volume percent in dry air. a flammable situation is not imminent and no further action is required.

greater than 6.0 volume percent in dry air. the operator is instructed to consult with the Emergency Director.

appropriate at this point pending evaluation by the Emergency Director and plant engineering staff.

If the hydrogen If the concentration is No other operator action is DATE AUG 28 2003 PAGE 5 2, of 70 All hydrogen measurements are referenced to concentrations in dry air even though the actual containment environment may contain significant steam concentrations. The reason for this is twofold: 1) most hydrogen measurements systems remove moisture from the sample thus approximating a dry air condition and 2) the indication of the potential of hydrogen flammability is conservative when based upon using hydrogen concentration in dry air.

ACTIONS :

O O

O O

O Determine if a current hydrogen concentration measurement is available Determine if hydrogen concentration is less than 6.0% in dry air Determine if hydrogen concentration is less than 0.5% in dry air Obtain a hydrogen concentration measurement Turn on hydrogen recombiner system INSTRUMENTATION:

N/A CONTROL/EQUIPKENT:

O O

Controls/equipment to obtain a hydrogen concentration measurement Hydrogen recombiner system controls if available Post LOCA Hydrogen Control System Controls KNOWLEDGE :

N / A INFORMATION USE

ENCLOSURE 4 NUCLEAR MANAGEMENT COMPANY, LLC KEWAUNEE NUCLEAR PLANT DOCKET 50-305 February 26,2004 Letter from Thomas Coutu (NMC)

To Regional Administrator, Region Ill (NRC)

Operatina Procedure N-RBV-18C Post-LOCA Hydrogen Control 17 Pages Follow

NO. N-RBV-18C REV K

WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT TITLE POST-LOCA Hydrogen Control OPERATING PROCEDURE DATE AUG 12 1997 PAGE 1 of 17 REVIEWED BY APPROVED BY & (k.' -

i -

NUCLEAR YES SAFETY RELATED 0 NO I

PORC REVIEW YES SRO APPROVAL OF YES REQU I RED TEMPORARY CHANGES NO REQUIRED c] NO

1.0 INTRODUCTION

I 1.1 Procedure covers c o n t r o l l i n g hydrogen c o n c e n t r a t i o n i n Containment f o l l o w i n g a Loss o f Coolant Accident u s i n g one o f t h e f o l l o w i n g met hods :

D i l u t i o n w i t h a i r Recombining hydrogen w i t h oxygen through a Hydrogen Recombiner Procedure a 1 so covers r e 1 easing hydrogen t o atmosphere through t h e S h i e l d B u i l d i n g Vent System.

1.2 2.0 PRECAUTIONS AND -LIMITATIONS 2.1 Hydrogen c o n c e n t r a t i o n i n Containment s h a l l NOT exceed 3.5% by volume.

2.2 Containment pressure should NOT exceed 15 p s i g.

2.3 IF hydrogen c o n c e n t r a t i o n i n Containment i s 20.5% by volume, p l a c e t h e Hydrogen Recombiner i n s e r v i c e. OR d i l u t e Containment atmosphere.

2.4 E hydrogen c o n c e n t r a t i o n i n Containment i s approaching 3.5% by volume. vent Containment atmosphere through t h e S h i e l d B u i l d i n g Vent Sy s tem.

2.5 A Discharge Permit s h a l l be obtained p r i o r t o v e n t i n g Containment atmosphere through t h e S h i e l d B u i l d i n g Vent System.

2.6 hydrogen c o n c e n t r a t i o n i n Containment i s >6% by volume, Containment atmosphere should be vented.

3.0 INITIAL C O N D I T I O N S 3. 1 N-RBV-18-CL i s complete.

i WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT OPERATING PROCEDURE No *

- R6V -

r TITLE POST-LOCA Hydrogen Control DATE AUG 12 1997 PAGE 2 of 17 4.0 PROCEDURE 4.1 S t a r t u o

1.

T r a i n B Hvdroqen D i l u t i o n of Containment w i t h Instrument Air Avai 1 ab1 e:

NOTE:

T r a i n B i s p r e f e r r e d because a l l T r a i n 8 components a r e i n t h e C o n t r o l l e d Area, w h i l e someTrain A components a r e on t h e clean side.

a.

L o c a l l y OPEN SA-7003B/MV-32148, Hydrogen D i l u t i o n t o Containment:

1.

REMOVE s e a l i n g d e v i c e from SA-70036 Local/Remote s w i t c h

2.

REMOVE s e a l i n g d e v i c e from SA-70036 c o n t r o l switch.

3.

POSITION SA-7003B Local/Remote s w i t c h t o LOCAL.

4.

OPEN SA-70036.

b.

ESTABLISH Instrument A i r f l o w t o Containment:

(Main Steam P e n e t r a t i o n A Area)

1.

OPEN IA-10028. Instrument A i r Supply - Post LOCA Hydrogen.

2.

OPEN IA-1001B/CV-31392, Post LOCA A i r Supply Control Valve, and ESTABLISH 25 SCFM a i r f l o w as i n d i c a t e d by FI-18238. Post

- LOCA Instrument A i r Supply f l o w i n d i c a t i o n.

2.

T r a i n A Hvdrouen D i l u t i o n o f containment w i t h Instrument A i r Avai 1 ab1 e NOTE: T r a i n B i s p r e f e r r e d because a l l T r a i n B components a r e i n t h e C o n t r o l l e d Area, w h i l e some T r a i n A components a r e on t h e c l e a n s i d e.

a.

L o c a l l y OPEN SA-7003A/MV-32147, Hydrogen D i l u t i o n t o Containment :

1.

REMOVE s e a l i n g d e v i c e from SA-7003A c o n t r o l s w i t c h.

2.

OPEN SA-7003A CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT TITLE POST-LOCA Hydrogen C o n t r o l OPERATING PROCEDURE No -

-RBV 4.1.2 CONTINUED

b.

ESTABLISH Instrument A i r f l o w t o Containment:

(Main Steam P e n e t r a t i o n B Area)

1.

OPEN IA-1002A. Instrument A i r SupQly-Post LOCA Hydrogen.

2.

OPEN IA-1001A/CV-31391, Post LOCA A i r Supply Control Valve, and ESTABLISH 25 SCFM a i r f l o w a s i n d i c a t e d by FI-18237, Post LOCA Instrument A i r Supply flow i n d i c a t i o n.

3.

T r a i n B Hydroqen D i l u t i o n of Containment w i t h Instrument A i r NOT Avai 1 ab1 e NOTE:

T r a i n B i s p r e f e r r e d because a l l T r a i n 8 components a r e i n t h e C o n t r o l l e d Area. w h i l e some T r a i n A components

'are on t h e c l e a n s i d e.

a.

L o c a l l y OPEN SA-7003B/MV-32148, Hydrogen D i l u t i o n t o Containment:

1.

REMOVE s e a l i n g device from SA-70038 Local/Remote s w i t c h.

2.

REMOVE s e a l i n g device from SA-7003B c o n t r o l s w i t c h.

3.

P O S I T I O N SA-70038 Local/Remote s w i t c h t o LOCAL.

4.

OPEN SA-7003B.

b.

ESTABLISH D i l u t i o n A i r f l o w :

( A u x i l i a r y B u i l d i n g Loading Dock - South End)

1. INSTALL p o r t a b l e air compressor t o f l a n g e upstream of SA-70006, Emergency A i r Supply - P o s t LOCA Hydrogen.

2.

OPEN SA-70008.

3, START p o r t a b l e a i r compressor.

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION I No* N-RBV-18C OPERATING PROCEDURE TITLE POST-LOCA Hydrogen Control I

ICEWAUNEE NUCLEAR POWER PLANT DATE AUG 12 1997 P24CX 4

of 1 7 4.1.3.b CONTINUED

4.

OPEN SA-70018. Emergency A i r Supply - Post LOCA Hydrogen, t o o b t a i n 10-20 p s i g on PI-11404. Post LOCA Emergency A i r Supply. (Main Steam P e n e t r a t i o n A Area) 4.

T r a i n A Hvdroqen D i l u t i o n o f Containment h i t h Instrument A i r NOT Avai 1 ab1 e NOTE:

T r a i n B i s p r e f e r r e d because a l l T r a i n 8 components are i n t h e C o n t r o l l e d A r e a, w h i l e some Train A components are on t h e c l e a n side.

a.

L o c a l l y OPEN SA-7003AJMV-32147, Hydrogen D i l u t i o n t o Con t a i nmen t :

1.

REMOVE s e a l i n g d e v i c e f r o m SA-7003A c o n t r o l switch.

2.

OPEN SA-7003A.

b.

INSTALL p o r t a b l e air compressor t o f l a n g e upstream of SA-7000A. Emergency A i r Supply - Post LOCA Hydrogen.

(Steam Generator Blowdown Heat Exchanger Area)

C.

OPEN SA-7000A.

d.

START p o r t a b l e a i r compressor.

e.

OPEN SA-7001A. Emergency A i r Supply - Post LOCA Hydrogen, t o o b t a i n 10-20 p s i g on PI-11403,. Post LOCA Emergency A i r Supply.

(Main Steam P e n e t r a t i o n B Area)

5.

T r a i n 8 R e c i r c u l a t i n q Containment Atmosohere throuqh Hvdroqen Recombi n e r NOTE:

T r a i n B i s p r e f e r r e d because a l l T r a i n B components a r e i n t h e C o n t r o l l e d Area, w h i l e some T r a i n A components are on t h e clean s i d e.

a.

V E R I F Y T r a i n 8 Hydrogen D i l u t i o n o f Containment NOT o p e r a t i n g.

b.

V E R I F Y T r a i n B Venting and F i l t e r i n g Containment Air through S h i e l d B u i l d i n g Vent o p e r a t i n g.

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION No -

N - REV -

KEWAUNEE NUCLEAR POWER PLANT TITLE POST-LOCA Hydrogen Control OPERATING PROCEDURE DATE AUG 12 1997 PAGE 5

of 17 I

4.1.5 CONTINUED

c.

VERIFY Containment Dome Fan 8, ON.

2.

Hydrogen Recombiner discharge p i p i n g INSTALLED on f l a n g e upstream o f LOCA-1096. Hyd Recombiner t o Containment.

3.

Power cord INSTALLED a t J u n c t i o n Box 136-2139.

(Aux Bldg loading dock, NW corner by Door 87)

e.

VERIFY LOCA-202. 2" Cntmt Vent t o Aux B l d g Exh Isol. CLOSED.

( A u x i l i a r y B u i l d i n g Loading Dock) f.

PO'SITION MCC-45B(A3). Hydrogen Recombiner 18 Dedicated Feed, t o ON.

g.

VERIFY IA-1002B. Instrument A i r Supply f o r Post LOCA H2 C o n t r o l, CLOSED. (Main Steam P e n e t r a t i o n A Area)

h.

L o c a l l y REMOVE s e a l i n g devices from t h e f o l l o w i n g :

1.

LOCA-ZB/MV-32146, Post LOCA Hydrogen Cntmt Vent Is01 B,

I Local /Remote s w i t c h.

2.

LOCA-28 c o n t r o l s w i t c h.

I

3.

LOCA-lOOB/CV-31725, Post LOCA Hydrogen t o Recombiner B.

Local /Remote s w i t c h.

4.

SA-7003B/MV-32148, Hydrogen D i l u t i o n t o Containment.

Local /Remote s w i t c h.

5.

SA-70038 c o n t r o l switch.

I

6.

LOCA-ZOlB/CV-31727, Post LOCA Hydrogen Recombiner B t o Cntmt. Local/Remote s w i t c h.

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION No* N-RBV I

KEWAUNEE NUCLEAR POWER PLANT I TITLE POST-LOCA Hydrogen Control OPERATING PROCEDURE DATE AUG 12 1997 PAGE 6 of 17 4.1.5 CONTINUED

i. VERIFY LOCA-3B/CV-31388 Post LOCA Hydrogen Annulus Vent I s o l a t i o n B. CLOSED.

j. POSITION Local /Remote switches t o LOCAL AND OPEN t h e fol 1 owi ng :

I LOCA-2B LOCA-lOOB SA-70036 LOCA-2016 k.

ESTABLISH f l o w through Hydrogen Recombiner:

( A u x i l i a r y B u i l d i n g Loading Dock)

1.

UNLOCK and OPEN LOCA-1018.

2.

OPEN LOCA-109B.

3.

OPEN SA-70018. Emergency A i r Supply - Post LOCA Hydrogen.

1.

START Hydrogen Recombiner per Owners Manual.

6.

T r a i n A R e c i r c u l a t i n s Containment AtmosDhere throuqh Hvdroqen Recombi ner NOTE:

T r a i n B i s p r e f e r r e d because a l l T r a i n B components a r e i n t h e C o n t r o l l e d A r e a. w h i l e some T r a i n A components are on t h e c l e a n side.

a.

b.

V E R I F Y T r a i n A Venting and F i l t e r i n g Containment A i r through c.

V E R I F Y Containment Dome Fan A. ON.

d.

VERIFY Hydrogen Recombiner p r o p e r l y INSTALLED:

VERIFY T r a i n A Hydrogen D i l u t i o n of Containment N

(

J o p e r a t i n g.

S h i e l d B u i l d i n g Vent NOT o p e r a t i n g.

(Machine Shop Area)

1.

Hydrogen Recombiner s u c t i o n p i p i n g INSTALLEO on f l a n g e downstream o f LOCA-101A. Containment t o Hyd Recombiner.

CONTINUE0

WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT No -

- RBV - lac L

TITLE POST-LOCA Hydrogen Control 4.1.6.d CONTINUED OPERATING PROCEDURE

2.

Hydrogen Recombiner discharge p i p i n g INSTALLED on f l a n g e upstream of LOCA-109A. Hyd Recombiner t o Containment.

DATE AUG 12 1997 PAGE 7

of 17

3.

Power c o r d INSTALLED a t J u n c t i o n Box JB-2138.

(Turb Bldg Mezz. South of Secondary A n a l y t i c a l Panel)

e.

P O S I T I O N MCC-32G(A3), Hydrogen Recombiner 1 A Dedicated Feed, t o ON.

f. V E R I F Y IA-1002A. Instrument A i r Supply f o r Post LOCA H2 C o n t r o l, CLOSED. (Main Steam P e n e t r a t i o n B Area)

g.

OPEN SA-7001A. Emergency A i r Supply - Post LOCA Hydrogen.

(Main Steam P e n e t r a t i o n 6 Area) h.

ALIGN T r a i n A as f o l l o w s :

1:-

V E R I F Y LOCA-3A/CV-31386. Post LOCA Hydrogen Annulus Vent I s o l A. CLOSED.

2.

OPEN LOCA-201A/CV-31726. Post LOCA Hydrogen Recombiner A t o Cntmt.

3.

REMOVE s e a l i n g device and OPEN SA-7003A/MV-32147.

Hydrogen D i l u t i o n t o Containment.

4.

OPEN LOCA-lOOA/CV-31724. Post LOCA Hydrogen t o Recombi ner A.

5.

REMOVE s e a l i n g device and OPEN LOCA-2A/MV-32145, P o s t LOCA Hydrogen Cntmt Vent I s o l A.

i. ESTABLISH f l o w through Hydrogen Recombiner:

(Machine Shop Area)

1.

UNLOCK and OPEN LOCA-101A.

2. OPEN LOCA-109A.

C O N T I N U E D

WISCONSIN PUBLIC SERVICE CORPORATION No *

- RBV 18' KEWAUNEE NUCLEAR POWER PLANT TITLE POST-LOCA Hydrogen C o n t r o l OPERATING PROCEDURE DATE AUG 12 1997 PAGE 8 of 1 7 4.1.6 CONTINUED

j. START Hydrogen Recombiner per Owners Manual.

7.

T r a i n B Ventins and F i l t e r i n s Containment'Atmosphere throuqh S h i e l d B u i l d i n q Vent a.

REQUEST D i scharge Permit.

b.

V E R I F Y one t r a i n S h i e l d B u i l d i n g Vent, ON.

c.

VERIFY Containment Oome Fan 8. ON.

d.

ESTABLISH Containment discharge t o S h i e l d B u i l d i n g Annulus:

1.

REMOVE s e a l i n g device and POSITION Local/Remote s w i t c h i n LOCAL on LOCA-ZB/MV-32146, Post LOCA Hydrogen Cntmt Vent

- Isol B.

2.

REMOVE s e a l i n g device and OPEN LOCA-2B.

3.

VERIFY B T r a i n Hyd Control Vent F l o w Control Switch 19594, i n MAX FLOW p o s i t i o n.

CAUTION Do NOT a l l o w S h i e l d B u i l d i n g Annulus t o become p r e s s u r i z e d r e l a t i v e t o A u x i l i a r y B u i l d i n g.

NOTE:

FI-18240 reads 0-100 SCFM w i t h s w i t c h 19594 i n MAX FLOW p o s i t i o n.

4.

OPEN LOCA-3B/CV-31388. P o s t LOCA Hydrogen Annulus Vent Isol 8, t o o b t a i n 25 SCFM as i n d i c a t e d by FI-18240.

5.

V E R I F Y DP I 11407, Annul us/Aux d i f f e r e n t i a1 pressur e gall;?

reads 0-15" o f w a t e r.

(Post LOCA Hydrogen Cntmt 1 A Control S t a t i o n )

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION TITLE POST-LOCA Hydrogen Control I

KEWAUNEE NUCLEAR POWER PLANT NO. N-RBV-18C OPERATING PROCEDURE 4.1.7.d CONTINUED DATE AUG 12 1997 PAGE 9

of 1 7

8.

6.

RECORD i n f o r m a t i o n on Discharge Permit.

T r a i n A Ventinq and F i l t e r i n q Containment AtmosDhere throuqh S h i e l d B u i l d i n q Vent a.

REQUEST Discharge Permit.

b.

VERIFY one t r a i n S h i e l d B u i l d i n g Vent, ON.

c.

VERIFY Containment Dome Fan A, ON.

d.

ESTABLISH Containment d i scharge t o S h i e l d Bui l d i ng Annul us:

I

1.

REMOVE s e a l i n g device and OPEN LOCA-ZA/MV-32145, Post LOCA Hydrogen Cntmt Vent I s o l A.

2.

VERIFY A T r a i n Hyd C o n t r o l Vent Flow C o n t r o l Switch 19593, i n MAX FLOW p o s i t i o n.

CAUTION Do NOT a l l o w S h i e l d B u i l d i n g Annulus t o become p r e s s u r i z e d r e l a t i v e t o Auxi 1 i ary Bui l d i n g.

NOTE:

FI-18239 reads 0-100 SCFM w i t h s w i t c h 19593. i n MAX

3.

OPEN LOCA-3A/CV-31386. Post LOCA Hydrogen Annulus Vent I s o l A. t o o b t a i n 25 SCFM as i n d i c a t e d by FI-18239.

4.

VERIFY D P I 11407, Annulus/Aux d i f f e r e n t i a l pressure gauge.

FLOW p o s i t i o n.

reads 0-15" o f water.

(Post LOCA Hydrogen Cntmt 1 A Control S t a t i o n )

5.

RECORD i n f o r m a t i o n on D i scharge Permi t.

WISCONSIN PUBLIC SERVICE CORPORATION NO.

N-RBV-18C KEWAUNEE NUCLEAR POWER PLANT TITLE POST-LOCA Hydrogen C o n t r o l OPERATING PROCEDURE I DATE AUG 12 1997 I PAGE 10 of 1 7 4.2 Steady S t a t e

1.

Hvdroqen D i l u t i o n of Containment w i t h Instrument A i r A v a i l a b l e

a.

increased d i l u t i o n flow i s r e q u i r e d, OPEN IA-1001B (IA-1001A) t o o b t a i n r e q u i r e d flow.

Do exceed 100 SCFM as i n d i c a t e d by FI-18238 (FI-18237).

NOTE:

Both t r a i n s a r e r e q u i r e d f o r f l o w 5 100 SCFM.

b. u d i l u t i o n f l o w > l o 0 SCFM i s r e q u i r e d ESTABLISH f l o w p e r 4.1.1 (4.1.21, Hydrogen D i l u t i o n of Containment w i t h Instrument A i r A v a i l a b l e.

1.

THROTTLE IA-1001A and IA-1001B t o balance flow evenly between b o t h t r a i n s.

Do exceed 200 SCFM t o t a l f l o w as i n d i c a t e d by FI-18238 and FI-18237.

c.

WHEN Containment pressure i s 13 p s i g. THROTTLE IA-10018

d. E-Containment hydrogen c o n c e n t r a t i o n i s 3.0% by volume and

( I A - l O O l A ) t o m a i n t a i n Containment pressure 12.5 - 13.5 p s i g.

i n c r e a s i n g.

GO TO s t e p 4.1.7 (4.1.81, Venting and F i l t e r i n g Containment A i r through S h i e l d B u i l d i n g Vent.

2.

Hvdroqen D i l u t i o n o f Containment w i t h Instrument A i r NOT A v a i l a b l e

a.

WHEN Containment pressure i s 13 p s i g. THROTTLE SA-7001B (SA-7001A) t o m a i n t a i n Containment pressure 12.5 - 13.5 p s i g.

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION I No

- 18c OPERATING PROCEDURE TITLE POST-LOCA Hydrogen Control I

KEWAUNEE NUCLEAR POWER PLANT DATE AUG 12 1997 PAGE 11 of 1 7 4.2.2 CONTINUED

b.

Containment hydrogen c o n c e n t r a t i o n i s 3.0% by volume and i n c r e a s i n g.

GO TO step 4.1.7 (4.1.81, Venting and F i l t e r i n g Containment A i r through S h i e l d B u i l d i n g Vent.

3.

R e c i r c u l a t i n q Containment AtmosDhere throdqh Hydrosen Recombiner a.

None.

4.

V e n t i n q and F i l t e r i n s Containment A i r throush S h i e l d B u i l d i n s Vent a.

VERIFY S h i e l d B u i l d i n g Annulus pressure l e s s than A u x i l i a r y B u i l d i n g pressure. as i n d i c a t e d by DPI-11407.

(Post LOCA Hydrogen Cntmt 1 A Control S t a t i o n )

1. IF S h i e l d B u i l d i n g Annulus pressure i s equal t o o r g r e a t e r t h a n A u x i l i a r y B u i l d i n g pressure, THROTTLE LOCA-3A (LOCA-3B) CLOSED, t o reduce Containment discharge r a t e.

b. E Containment hydrogen c o n c e n t r a t i o n i s i n c r e a s i n g i n c r e a s e d discharge f l o w r a t e i s r e q u i r e d, OPEN LOCA-3A (LOCA-36) t o r e q u i r e d f l o w.

00 exceed 100 SCFM as i n d i c a t e d by FI-18239 (FI-18240).

NOTE:

B o t h t r a i n s are r e q u i r e d f o r f ow > 100 SCFM.

c.

discharge f l o w r a t e >lo0 SCFM s r e q u i r e d. ESTABLISH f l o w p e r 4.1.8 (4.1.71, Venting and F i t e r i n g Containment Atmosphere through S h i e l d B u i l d i n g Vent.

1.

THROTTLE L O C A - 3 A and LOCA-3B t o BALANCE f l o w evenly between both t r a i n s.

Do JOJ exceed 200 SCFM t o t a l f l o w i n d i c a t e d by FI-18239 and FI-18240

I WISCONSIN PUBLIC SERVICE CORPORATION NO -

N - REV - 18C TITLE POST-LOCA Hydrogen C o n t r o l I

KEWAUNEE NUCLEAR POWER PLANT OPERATING PROCEDURE I

DATE AUG 12 1997 PAGE 12 of 17 4.3 Shutdown

1.

T r a i n B Hvdrosen D i l u t i o n o f Containment w i t h Instrument A i r Avai 1 ab1 e a.

ISOLATE Instrument A i r f l o w t o Containment:

(Main Steam P e n e t r a t i o n A Area)

1.

CLOSE IA-lOOlB/CV-31392, Post LOCA A i r Supply C o n t r o l Valve.

2.

CLOSE IA-10028. Instrument A i r Supply - Post LOCA Hydrogen.

b.

L o c a l l y CLOSE SA-7003B/MV-32148, Hydrogen O i l u t i o n t o Containment:

1.

CLOSE sA-7003B.

2.

POSITION SA-70038 Local/Remote s w i t c h t o REMOTE.

3.-

INSTALL s e a l i n g device on SA-70038 c o n t r o l s w i t c h.

4.

INSTALL s e a l i n g device on SA-70038 Local/Remote s w i t c h.

2.

Train A Hvdrocren D i l u t i o n o f Containment w i t h Instrument Air A v a i 1 ab1 e a.

ISOLATE Instrument A i r f l o w t o Containment:

(Main Steam P e n e t r a t i o n B Area)

1.

CLOSE IA-lOOlA/CV-31391. Post LOCA A i r Supply C o n t r o l

2.

CLOSE IA-1002A. Instrument Air Supply - Post LOCA b.

L o c a l l y CLOSE SA-7003A/MV-32147.

Hydrogen D i l u t i o n t o Valve.

Hydrogen.

Containment:

1.

CLOSE SA-7003A.

CONTINUED

WISCONSLN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT OPERATING PROCEDURE 4.3.2.b CONTINUED

~-

No *

- RBV -

TITLE POST-LOCA Hydrogen Control DATE AUG 1 2 1997 PAGE 13 of 17

2.

INSTALL s e a l i n g device on SA-7003A c o n t r o l switch.

3.

T r a i n B Hvdrosen D i l u t i o n of Containment w i t h Instrument Air NOT Avai 1 ab1 e

a.

ISOLATE d i l u t i o n a i r flow:

I

( A u x i l i a r y B u i l d i n g Loading Dock - South End)

1.

STOP p o r t a b l e a i r compressor.

2.

CLOSE SA-7OOOB. Emergency A i r Supply - Post LOCA Hydrogen.

3.

REMOVE p o r t a b l e a i r compressor from f l a n g e upstream o f SA-7000B.

4.

CLOSE SA-7001B. Emergency A i r Supply - P o s t LOCA Hydrogen.

(Main Steam P e n e t r a t i o n A Area)

b.

L o c a l l y CLOSE SA-7003B/MV-32148, Hydrogen D i l u t i o n t o Containment:

1.

CLOSE SA-7003B.

2.

POSITION SA-70038 Local/Remote s w i t c h t o REMOTE.

3. INSTALL s e a l i n g device on SA-7003B c o n t r o l switch.

4.

INSTALL s e a l i n g device on SA-7003B Local/Remote s w i t c h.

4.

T r a i n A Hvdrouen D i l u t i o n of Containment w i t h Instrument A i r NOT A v a i l a b l e

a.

ISOLATE d i l u t i o n a i r f l o w :

(Steam Generator Blowdown Heat Exchanger Area)

1.

STOP p o r t a b l e a i r compressor.

2.

CLOSE SA-7000A. Emergency A i r Supply - Post LOCA Hydroqer,

3.

REMOVE p o r t a b l e a i r compressor from f l a n g e upstream o f SA-7000A.

CONTINUE0

WISCONSIN PUBLIC SERVICE CORPORATION No

- RBV -

4.3.4.a CONTINUED KEWAUNEE NUCLEAR POWER PLANT OPERATING PROCEDURE

4.

CLOSE SA-7001A. Emergency A i r Supply - Post LOCA Hydrogen.

(Main Steam P e n e t r a t i o n B Area)

TITLE POST-LOCA Hydrogen Control DATE AUG 12 1997 PAGE 14 of 17

b.

L o c a l l y CLOSE SA-7003A/MV-32147, Hydrogen D i l u t i o n t o Con t a i nmen t :

I

1.

CLOSE SA-7003A.

2.

INSTALL s e a l i n g device on SA-7003A c o n t r o l s w i t c h.

5.

T r a i n B R e c i r c u l a t i n q Containment AtmosDhere throuqh Hydroqen Recombi ner

a.

STOP and ISOLATE Hydrogen Recombiner:

( A u x i l i a r y B u i l d i n g Loading Dock)

1.

STOP Hydrogen Recombiner p e r Owners Manual.

2.

CLOSE SA-7001B. Emergency A i r Supply - Post LOCA Hydrogen.

3.

CLOSE LOCA-109B. Hyd Recombiner t o Containment.

4.

CLOSE and LOCK LOCA-1016. Containment t o Hyd Recombiner.

5.

POSITION MCC-45B(A3), Hydrogen Recombiner 1 B Dedicated Feed, t o OFF.

6.

REMOVE Hydrogen Recombiner power cord.

7.

REMOVE Hydrogen Recombiner discharge p i p i n g f r o m f l a n g e upstream o f LOCA-109B.

8.

REMOVE Hydrogen Recombiner s u c t i o n p i p i n g from f l a n g e downstream o f LOCA-101B.

b.

ALIGN Post LQCA System:

1.

CLOSE LOCA-201B/CV-31727. Post LOCA Hydrogen Recombiner B t o Cntmt.

2.

CLOSE SA-7003B/MV-32148, Hydrogen D i l u t i o n t o Containment, and I N S T A L L s e a l i n g device on c o n t r o l s w i t c h.

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT OPERATING PROCEDURE 4.3.5.b CONTINUED No *

- RBV - 18' TITLE POST-LOCA Hydrogen Control h

DATE AUG 12 1997 PAGE 15 of 17

3.

CLOSE LOCA-lOOB/CV-31725, P o s t LOCA Hydrogen t o Recombiner 8.

4.

CLOSE LOCA-ZB/MV-32146, Post LOCA Hydrogen Cntmt Vent

5.

Is01 B and INSTALL s e a l i n g device'on c o n t r o l switch.

POSITION Local /Remote switches t o REMOTE and INSTALL s e a l i n g devices:

LOCA-2B SA-7003B LOCA-100B LOCA-2016

6.

T r a i n A R e c i r c u l a t i n q Containment Atmosohere throuqh Hvdroqen Recombiner

a.

STOP and ISOLATE Hydrogen Recombiner as f o l l o w s :

(Machine Shop Areal

1.

STOP Hydrogen Recombiner p e r Owners Manual.

2.

CLOSE LOCA-109A. Hyd Recombiner t o Containment.

3.

CLOSE and LOCK LOCA-lOlA, Containment t o Hyd Recombiner.

4.

POSITION MCC-32G(A3), Hydrogen Recombiner 1 A Dedicated Feed. t o OFF.

5.

REMOVE Hydrogen Recombiner power cord.

6.

REMOVE Hydrogen Recombiner discharge p i p i n g from f l a n g e upstream o f LOCA-109A.

7.

REMOVE Hydrogen Recombiner s u c t i o n p i p i n g f r o m f l a n g e downstream o f LOCA-101A.

b.

CLOSE SA-7001A. Emergency A i r Supply - Post LOCA Hydrogen (Main S t e a m P e n e t r a t i o n B A r e a )

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT OPERATING PROCEDURE

c.

ALIGN Post LOCA System:

I No lac TITLE POST-LOCA Hydrogen C o n t r o l DATE AUG 12 1997 PAGE 16 of 17

1.

CLOSE LOCA-201A/CV-31726. Post LOCA Hydrogen Recombiner A t o Cntmt.

I

2. CLOSE SA-7003A/MV-32147, Hydrogen D i l u t i o n t o Containment, and INSTALL s e a l i n g device on c o n t r o l switch.

3.

CLOSE LOCA-lOOA/CV-31724, Post LOCA Hydrogen t o Recombi ner A.

4.

CLOSE LOCA-2A/MV-32145, Post LOCA Hydrogen Cntmt Vent Isol A and INSTALL s e a l i n g device on control switch.

7.

T r a i n A Ventincr and F i l t e r i n s Containment AtmosDhere Throush S h i e l d Buildincr Vent

a.

ISOLATE Containment discharge t o S h i e l d B u i l d i n g Annulus:

1.

CLOSE LOCA-3A/CV 31386, Post LOCA Hydrogen Annulus Vent

2.

CLOSE LOCA-2A/MV 32145, Post LOCA Hydr.ogen Cntmt Vent A.

INSTALL s e a l i n g device on LOCA-2A c o n t r o l switch.

RECORD i n f o r m a t i o n on Discharge Permit.

Isol A.

I S 0 1 A.

3.

RETURN Containment Dome Fan A t o r e q u i r e d alignment.

b.

CONTINUED

WISCONSIN PUBLIC SERVICE CORPORATION TITLE POST-LOCA Hydrogen Control I

KEWAUNEE NUCLEAR POWER PLANT NO.

N -REV - 18C OPERATING PROCEDURE 4.3.7 CONTINUED NOTE:

Ensure Venting and F i l t e r i n g Containment Atmosphere through S h i e l d B u i l d i n g Vent T r a i n B i s NOT o p e r a t i n g p r i o r t o Returning S h i e l d B u i l d i n g Vent t o r e q u i r e d a1 i gnment.

I

c.

RETURN S h i e l d B u i l d i n g Vent t o r e q u i r e d alignment.

DATE AUG 12 1997 PAGE 1 7 of 1 7

8.

T r a i n B Ventinq and F i l t e r i n q Containment AtmosDhere Throuqh S h i e l d B u i l d i n q Vent a.

ISOLATE Containment discharge t o S h i e l d B u i l d i n g Annulus:

1.

CLOSE LOCA-3B/CV-31388. Post LOCA Hydrogen Annulus Vent I s o l B.

2.

CLOSE LOCA-ZB/MV-32146, Post LOCA Hydrogen Cntmt Vent I s o l 6.

A.

INSTALL s e a l i n g device on LOCA-28 c o n t r o l switch.

3.

POSITION LOCA-2B Local/Remote s w i t c h t o REMOTE.

A.

INSTALL s e a l i n g device on LOCA-2B Local/Remote switch.

4.

RECORD i n f o r m a t i o n on Discharge P e r m i t.

5.

RETURN Containment Dome Fan B t o r e q u i r e d alignment.

NOTE:

Ensure Venting and F i l t e r i n g Containment Atmosphere through S h i e l d B u i l d i n g Vent T r a i n A i s NOT o p e r a t i n g p r i o r t o Returning S h i e l d B u i l d i n g Vent t o requi r e d a1 ignment.

6.

RETURN S h i e l d B u i l d i n g Vent t o r e q u i r e d alignment.