ML20012B570

LER 90-003-00:on 900201,failure to Perform Monthly Source Check Surveillance on Three Radiation Process Monitors Occurred.Caused by Inadequate Procedure Change by Personnel. Source Check on Monthly Basis implemented.W/900305 Ltr

ML20012B570
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/05/1990
From:	Ewing E, Saulsberry D ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
2CAN039002, 2CAN39002, LER-90-003, LER-90-3, NUDOCS 9003150340
Download: ML20012B570 (4)

Text

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Ar6,ansas Power & Ught Company

, . / A%ansos N,ckw One

?- N-RNte 3. Box 137 G Russe! Mile, AR 77801 Tel 6019f>4 3100 l

7 March 5, 1990  ;

2CAN839002 U. S. Nuclear Regulatory Commission Document Centrol Desk Mail Station P1-137 Washington, D. C. 205555

SUBJECT:

Arkansas Nuclear One - Unit 2 Docket No. 50-368 i License No. NPF-6 Licensee Event Report 50-368/90-003-00 ,

Gentlemen:

In accordance with 10CFR 50.73(a)(2)(1)(B), attached is the subject report conveying information pertaining to a monthly to quarterly frequency change for a Tech Spec required surveillance involving source checks on three process radiation monitors.

Very truly yours,  ;

Early C. Ewing ,

JJF/DBS/abw Attachment cc:- Regional Administrator Region IV U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 ,

INP0 Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, GA 30339-3064 I

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ADOCK 05000368' PDC y AnE'waycenn

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F;m 1062.01A NRC Fofs 366 U.S. Nuclear Regulatury Commission (9+83) Approved OMB No. 3150-0104 LICENSEE EVENT RtPORT (L E R) ,

FACILITY N4ME (1) Arkansas Nuclear One Unit Two lDOCAET NJISER (2) lPAGE (3) 10151010101 31 6I 81110Fl013 TITLE (4) Failure To Perfom Monthly Source Check Surveillance On Three Radiation Process Monitors t Due To An Inadequate Procedure Change Initiated Throu0h Personnel Error EVEN" DATE (5) ,ER N@pER (6) l REPORT DATI. (7) OTHER FACILITIE5 INVOLVED (6)

I u ,1 < iequential , LRevisient I  ;

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! Month Day year Year Number Number Month Day Year Facility Names )Cket Nunber(sh '

) i O O O 01 2 01 1 9 0 91 0 -- 0 I 01 3 '- I O I O 01 3' 01 5 ' 91 Of 0 i 0 0 0 DPERAING TH;.5 REPDRT 15 5UBMITILD PUR5UANT 'O THE REQUIREMENT 5 0F 10 CFR 5: ,

M00F 09) 1 (Check one or more of the f 0110winn) (11) l~, 50.73(a)(2 (iv)

POWER 20.402(b ~ l 20.40b(c)

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~1 73.71(b) 20.405(a 1)(1) (2 v)

LEVEL 1

~l 50.36(c)(1) ~ 50.73 ~~l 73.71(c)

(10) 11010 ~~I 20.405(a) 1)(11) I l 50.36(c)(2) 1. 50.73 (2) wit) ~l Other ($pecify in

_i 20.405(a)(1)(iii) 1 3150.73(a)(2)(i) , ~l 50.73(a)(2)(v111)(A) Abstract below and l 20.405(a (1) tv) l 50.73(a)(2)(11) l _H 50.73(a)(2)(v111)(B). in Text. NRC Fom i_ 20.405(a (1) v) _1 50.73 :a)(2 ?(111) 1_I 50.73(a)(2)(x) 366A)

LICEN5EI: CON' ACT FOR THIS LER C,2)

Rame Telipphone Number Area Daryll Seulsberry, Nuclear $afety and Licensing $pecialist

• Code 51011 916l41-13!11010 COMPLGE ONE LINE FOR EACH cumrvNENT FAILURE DESCRIBED IN THIS RtPDF1 C,3)

Reportable Reportable Cause System Component Manufacturer to NPR05 Cause $ystem Component Manufacturer to NPR0$

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I l I I I I I I I I i i SUPPLLMtN' REPORT IKPtL11,u (14) EXPEGILD Month Day Year

$UBMIS$10N I

.l**l Yes If yes. :omplete Impeeted submission Date) lYi No 0 ATE (15) l I I i l

AB5 TRACT LLimit to 1400 spaces, i.e. , approximately fifteen single-space typewr14 ten lines) (16)

During a NRC inspection on February 1,1990, a NRC Inspector detemined that the monthly source checks for the radweste area ventilation system (2RIT$-8542), fuel handling area ventilation system (GRIT $ 8540),

and the auxiliary building north ventilation system (2RIT$ 7828) process radiation monitors were not bein0 Perfomed in accordance with Technical Specification 4.3.3.9 and Table 4.3-12. This condition resulted due to a requirement for source checkin0 these monitors on a monthly basis being changed to a quarterly frequency through a procedure change associated with the channel functional test. The channel functional test is required to be perfomed on a que.rterly basis but contains a monthly source check requirement for the corresponding process radiation monitor within the same procedure. The effected monitors functioned normally during the time they were being source checked or. a quarterly basis. They were satisfactorily source checked and declared operable on February 2, 1990. The root cause of this condition was personnel error involving failure to recognize the monthly source check <

requirement during processing of the functional test procedure change. A procedure change has been implemented to return the source check requirement to a monthly basis. Additionally, several enhancements have been made to the procedure revision process which should aid in preventing the occurrence of similar events. ,

4 e Fom 1062.01B NRC Fom 366A U.S. Nuclear Regulatory Commission (9 63) Approved 04B No, 3150-0104 Expires: 8/31/85 LICENSEE EVENT REPORT (LER) TEXT CONTINVATION FACILITY NAME (1) l DOC MT NL8BER (2) l LER NJ4BER (6) l FAGE (3) l l . 5equentialj Revision l Arkansas Nuc1 car One, Unit Two I Year' Number Number l 015l010101 31 61 8 91 0 -

01 01 3 --

01 0101210F1013 IsAI (If more space is required, use additional NRL Form 366m's) (17) i A. Plant Status At the time this condition was discovered, Arkansas Nuclear One. Unit Two (AND-2) was in mode I with a power level of 2005. Reactor Coolant System (RCS) (AB) temperature was 580 degrees Fahrenheit and RC5 pressure m 2250 psia.

B. Event Description During a NRC inspection on Februs 1 1990 a NRC inspector determined that the monthly source checks for the redweste area vent atIon sys, tem (2RITS*8542), fuel handling area ventilation system (2RIT5 8540), and the auxiliary building north ventilation system (2RITS-7828) process radiation monitors were not being performed in accordance with Technical Specification 4.3.3.9 and .

Table 4.3-12. The procedure for source checking these anonitors on a monthly basis was found to

• have been inadvertently changed to a quarterly frequency by a procedure change associated with the i channel functional test of the acnitors. The applicable Technical Specification allows the

^

channel functional test to be conducted on a quarterly basis; however, source checks for the same monitors are specified to be performed monthly. A monthly source check was conducted on February 17, 1989, followed by a procedure change submitted on March 14, 1989, which revised the frequency .

interval for conducting both the channel function test and source check test. A temporary procedure change (TC-2) written to the monthly process radiation monitor system test (2304.016) on March 14, 1989, deleted testing of the three monitors from monthly testing and changed testing to a quarterly  :

basis as performed through the process radiation monitoring system test (2304.173). This was I submitted in an isolated effort to revise the procedure and was acceptable for the channel functional test but not for source checking the indicated monitors. Quarterly source check testing was s initiated on June 28, 1989, and progressed quarterly thereafter. The process radiation monitors >

were immediately decland inoperable on February 1,1990 when it was discovered that the source i check surveillance had not been completed as required by Technical Specifications. Additionally, '

a Control Roon status board entry was made to ensure that the corresponding Super Particulate ,

lodine and Noble Gas (SPING) monitor which serves as the redundant radiation monitor in the same 6 corresponding effluent vent line was not removed from service until the corresponding process radiation monitor was returned to operable status.

C. Safety Significance Failure to perform a monthly source check on the affected process monitors has had minimal safety i significance since all three monitoring instruments have functioned nomally and met all other ,

surve111ance requirements. Associated SPING monitors during this period have remained operable and available to monitor radiological effluent release paths except for isolated instances.

Additionally, the source check surveillance was satisfactorily completed on February 2,1990 with all th me monitors subsequently declared operable.

Since the surveillance test was satisfactorily perfomed on February 2,1990 and satisfactorily '

perfomed quarterly since March 14, 1989, it is reasonable to believe that the system would have perfomed its intended safety function during the time period the surveillance test was overdue.

Therefore, this event is not considered safety significant,

~ D. Root Cause The root cause of this event is personnel error. Failure to recognize that the three radiation monitoring systems have a monthly source check surveillance frequency requirement and a quarterly channel functional test surveillance frequency requirement contained within the same procedure ,

resulted in a Technical Specification violation when a procedure change was implemented considering only the channel functional test Tequirement.

Although the root cause of this condition is personnel error, a factor contributing to this condition involves the method of processing and reviewing procedure changes. During this period, no one organization had the sole responsibility or ownership for the entire surveillance test program. As a result of the recent organizational realignment, the Technical Specification Group has been creat6d.

4 l

Form 1062.018 j NRC Fore 366A U $. Nuclear Regulatory Consission l (9 83) Approved OMB ho. 3150 0104 '

Expires: 8/31/85 )

LICEN$(( EVENT REPORT (LER) TEXT CONTINUATION l 1

FACILITY N4ME (1) lDDCKET N M ER (2) l ,ER N M ER (6) l PAGE (3) i

)- l l l l Jequentiall i Revision l -

L Arkansas huclear One, Unit Two l l Year Number humber l 10151010101 31 61 81 91 0 -- 01 01 3 -- 01 Ol01310Fl0!3  ;

nu (If more space is required, use soditional NRC Form 366A's) (17)

E. Basis for Reportability  :

1 The failure to perfom a surveillance within the allowable interval specified in Technical Specifications is considered to be a condition prohibited by Technical Specifications and is therefore reportable under 10CFR 50.73(a)(2)(1)(8).

F. Corrective Actions Upon identification that the surveillance associated with the testing requirements for PRIT5 8542, '

2RITS-8540, and 2RITS 7828 had not been performed within the required time interval as defined in Technical Specifications, the monitors were declared inoperable. In addition, an entry was made '

on the plant status board to inform operators about the inoperable monitors and to prevent a corresponding $ PING monitor from being taken out of service. Job requests were subsequently submitted to source check 2RIT5 8547, 2RITS 8540, and 2RITS-7828. Source checks on these manitors .

were cumpleted on February 2,1990, resulting in the monitors being returned to operable status.

To confom with the Technical $pecification requirement for monthly source checks, the radiation  !

monitoring procedure has been revised from the current quarterly source check frequency to a i monthly basis.

$1nce processing of the initial procedural change associated with this event, several aspects concerning the method of revising procedures have been changed to limit the recurrence of this  ;

condition. First, procedure changes related to the revision of suneillance procedures are currently processed predominately through the Operations Technical Specifications Group who are +

involved with procedure revisions on a daily basis. The responsibility of this group is to track ,.

Technical Specification surveillances and ensure they are completed as scheduled. This will i provide a sense of ownership in this group, ensuring surveillances are conducted as scheduled.

Another task this group will perform is the review of each Technical Specification surveillance requirement and verification that a procedure correctly implements the surveillance nequirement and properly documents system operability.

C. Additional Infomation .

Similar events involving failure to perform a Technical $pecification surveillance within the i required surveillance interval were reported on October 5,1989 (LER 50 368/89-017 00), January 9, 1989 (LER 5D 368/89-002-00), and April 25, 1989 (LER 50-368/89-010 00). The cause of these events ,

was personnel error. In these cases, actions were initiated to improve the surveillance training ,

and scheduling program.

Energy Industry Identification System (EIIS) code are identified in the text as (XX). *

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