ML20138G527

Forwards STS Change Review Re Relocation of Resistance Temp Detector & Thermocouple Calibr Details

ML20138G527
Person / Time
Issue date:	12/17/1996
From:	Wermiel J NRC (Affiliation Not Assigned)
To:	Charemagne Grimes NRC (Affiliation Not Assigned)
Shared Package
ML20138G530	List: ML20138G527 ML20138H343
References
TAC-M61163, NUDOCS 9612190379
Download: ML20138G527 (6)

Text

-

• CE:o onM6 gj t UNITED STATE 3 j

NUCLEAR REGULATORY COMMISSION WA8HINGToN, D.C. 30eelH1001

% y,,, # December 17, 1996 4

I MEMORANDUM TO: Christopher 1. Grimes, Chief Technical Specifications Branch Associate Director for Projects FROM: Jared S. Warmiel, Chief i

instrumentation and Controls Branch Division of Reactor Controls and Human Factors

SUBJECT:

STANDARD TECHNICAL SPECIFICATION CHANGE REVIEW TSTF-19 (TAC NO. M61163)

I Attachment 2 is the Instrumentation and Controls Branch evaluation of the proposed i

Standard Technical Specification changes concerning relocation of resistance temperature detector and thermocouple calibration details. The completion of Traveller for STS Rev 2 Changes for TSTF-19 (Attachment 1) concludes our review of this proposed change to the

! Standard Technical Specifications. We concur with the Technica;1pecification Branch's recommendation for acceptance with modifications.

Attachments: As stated (2)

Contact:

Barry Marcus 415 2823 I

4 l

[ 2-l @ O l

J

. e, e

l TSB FORM 1 U.S. NUCLBAR IWOLAATORY -- PACKAGEseO. DATE 1 (11 BSI TSTF-TRAVELLER FOR STS Rev 2 CHANGES 19 12/17/96 4

NINEGe Specs /LCOs/ Benes fuenemos

-1438 WWOSI 1.1 881001_.501

! 1431 (WOSI 1.1,B 3.3.1,B 3.3.3 *8 #1-.501, WS3301_.801, WS3303-.301

}

I'l 1433GCBOSI CS1001_.501 l

l l

i

-1433 M s

-1434 SunWW Esessed Osiebene Does: FBenenes: g:\ farms \caenges.mdb

- C AN i

Dame Assiysed: 11/16/95 Tesh Brunsh: H6CB W sedse seesomene TSB Itsuloiser: Craig Herbuck/Robeet Giardine Tosh Roulower: Berry Mercue Rosenseendeden DATE: 12/07/95 Rosensmandenen DATE: 12/17/96 i I l APPROVE IX]IbODW1Y I IREJECT I IAPPROVE IX1RIODW1Y I 1 REJECT

! Censasses Censmanes.

See reviewer comments, etteched. 1717/95 inserts 1 and 2 could Concur with Technical Specification Branch (TSB) recommedstion for l be confusing and le repetitive

recommend ", which may acceptance with TSB modHications.

consist.. devices in the channel," be deleted from both inserts j 6/19/96 C. Grimes suggests referrel to tech branch. 11/15/96 l referred to instrumentation & Controis Branch.

I f l l

l STS CHANGE DISPOSITION l Ts3Acn0N DATE: TsW ACTION W espSseheel DATE:

! i 1 APPROVED I IISODNED I IREJECTED I IWITHDRAWN I IREVIBED ! ] APPEALED l Comunenes. Censusnes.

l 1

i STS FEE AND fuiCORD DATA CHANGES ACTION BY DATE ACTION BY DATE WP FBee Chuges Updeesd Coreged

]

4 chamens Assoas Danehmos l Poussed Updeesd

! Asenned ser Cemenene Rossenenen

Caneseene Deenheos Updened a CasesusBeste IAssue wAn.s. Bent l Upsheed en TsTPAstC updseed fBed G

WOMMS\TVLR NO,019 ATTACHMENT 1

- .-. - - -. -- , . - - . _ . -. . _ . . . . . ~ -

1 i

STANDARD TECHNICAL SPECIFICATION (STS) CHANGE REVIEW TSTF-19 i

Pronosal:

The PWR Owners' Groups (OGs) have proposed changet to NUREG-1430 (BWOG STS)

Section 1.1; NUREG-1431 (WOG STS) Sections 1.1, 8 3.3.1, and 8 3.3.3; and NUREG-1432-(CEOG) Section 1.1 to relocate resistance temperature detector (RTD) and thermocouple calibration details from the Channel Calibration definition to the Bases.

Evaluation:

RTD and thermocouple calibration details were specifically added to the Channel Calibration definition of the STS to address calibration problems with reactor coolant system (RCS) hot leg RTDs. The added sentences were structured to be applicable to systems where there are several detectors within the system which can be easily compared qualitatively, but would not be applicable to single channel systems (one detector) or to systems which cannot easily be operated in parallel at the required isothermal condition. However, as currently written in the DWOG STS, WOG STS, and CEOG STS the Channel Calibration definition would require inplace cross calibration l whenever any sensing element is replaced, regardless of whether a qualitative comparison can be made. This presents a contradiction for single channel systems and systems that cannot easily be operated in parallel.

The PWR OGs have proposed that the sentence, "Whenever a sensing element is replaced the next rewired CHANNEL CALIBRATION shall include an inplace cross calibration that compares the other sensing elements with the recently installed sensing element." be deleted from the Channel Calibration definition in Section 1.1 of each PWR STS. The PWR OGs have also proposed that insert 1 be added to the reactor trip system (RTS)

Instrumentation Bases B 3.3.1, for Surveillance Requirement (SR) 3.3.1.12 of the WOG STS and insert 2 be added to the post-accident monitoring (PAM) Instrumentation Bases B 3.3.3, for SR 3.3.3.2 of the WOG STS. The proposed Inserts 1 and 2 read as follows:

Insert 1: "Whenever a sensing element is replaced, the next required CHANNEL CALIBRATION of the resistance temperature Detectors (RTD) sensors, which may consist of an inplace qualitative assessment of sensor behavior and normal calibration of the remaining adjustable devices in the channel, is accomplished by an inplace cross calibration that compares the other sensing elements with the recently installed sensing element."

ATTACHMENT 2

4 l

j 1

! r i

insert 2

"Whenever a sensing element is replaced, the next required CHANNEL I l CALIBRATION of the Core Exit thermocouple sensors, which may consist of l

an inplace qualitative assessment of sensor behavior and normal calibration l of the remaining adjustable devices in the channel, is accomplished by an

inplace cross calibration that compares the other sensing elements with the j recently installed sensing element."

The Technical Specification Branch (TSB) has found that the existing definition of Channel j Calibration in the PWR STSs is confusing and could cause interpretation and Technical Specification violation problems. The TSB also found that the sentence to be relocated to

the Bases was intended for a specific method which applies to certain instrument i functions.

1

! Similar changes to NUREG-1433 (BWR/4 STS) and NUREG-1434 (BWR/6 STS) have been j accepted by the staff based on the following justifications:

1. The sentence to be removed described one specific method for performing a qualitative assessment and therefore was repetitive of the previous sentence aM

2. Typical BWR RTD and thermocouple applications do not allow establishing

isothermal conditions and direct qualitative assessments. l 1 l Based on Justification 1 for the BWR changes, the TSB has found that the PWR OGs

! proposed inserts 1 and 2 are repetitive and could be confusing. Therefore, TSB has i recommended the phrase ",which may consist of an inplace qualitative assessment of I sensor behavior and normal calibration of the remaining adjustable devices in the channel,"  !

be deleted from Inserts 1 and 2. TSE has also recommended that inserts similar to the i TSB modified inserts 1 and 2 be added to the following surveillance requirement Bases l sections for RCS hot leg temperature and core exit temperature in the reactor protection i system (RPS), PAM, and remote shutdown sections of the BWOG STS, WOG STS, and l CEOG STS:

s l 1. BWOG STS 4

l a. SR 3.3.1.6 - RPS Instrumentation Function 2 - RCS Hot Leg Temperature l b. SR 3.3.17.2 - PAM instrumentation Function 2 - RCS Hot Leg Temperature

! and Function 14 - Core Exit Temperature

{ c. SR 3.3.18.3 - Remote Shutdown System Function 3a - RCS Hot Leg j Temperature 1

d i

2. WOG STS

a. SR 3.3.3.2 - PAM Instrumentation Function 3 - RCS Hot Log Temperature

b. SR 3.3.4.3 - remote Shutdown System Function 3a - RCS Hot Leg Temperature

3. CEOG STS (Analog and Digital) l

a. .SR 3.3.11.2 - PAM instrumentation Function 2 - RCS Hot Leg Temperature and Functions 14 thru 17 - Core Exit Temperature ,

b. SR 3.3.12.3 - Remote Shutdown System Function 3a - RCS Hot Leg Temperature l

CONCLUSION. 1 Based on the above, HICB agrees wid the TSB recommended modifications, and, therefore, concurs with the recommendation for acceptance with modifications.

• 4

- . . . - . . , . - - . - - - - . - . - , ~ - - . - - - - . . - . . . . - - . - - - . - - - - - - - . . - .

so i TSB FORM 1 U.S. NUCLEAR REGULATORY manaamm p*CKAGENO. DATE (11 95) TSTF-

TRAVELLER FOR STS Rev 2 CHANGES 19 12/30/96  ;

NUREGs Specs /LCOs/Beses Filenemes i

-1430 IBWOGI '1.1 BS1001_.501

}

1431(W0el 1.1, B 3.3.1 E 3.3.3 S1001_.S01, WS3301_.B01,

WS3303_.B01 1

l'I

! 1432(CE0el CS1001_.S01 f

l -1433 SWIU4) 1434 lBWR/Sl i

Entered Database Date: Filename: e:\formewhenees.mdb STS CHANGE REVIEW Octe Assigned 11/16/95 Tech Branch:

} HICB lif review requested)

TSB Reviewer: Craig Herbuck/ Robert Giardine Tech Reviewer: Barry Mercus l Recommendetion DATE: 12X)7/95 Recommendation DATE: 12/17/96 i [ ] APPROVE [ X ] MODIRY [ ] REJECT [ ] APPROVE [ X ] MODIRY [ ] REJECT

Commente Comments

! See reviewer commente, etteched.12/7/95 inserte 1 and 2 could Concur with Technical Specification Branch (TSB) recommodation for j b) confusing and is repetitive; recommend *, which may acceptance with TSB modificatione. 12/26/96 to C. Grimes for

censiet... devices in the channel.' be deleted from both inserts, disposition.

j 6/19/96 C. Grimes suggeste referral to toch branch. 11/15/96 rzforred to instrumentation & Controle Branch.

j STS CHANGE DISPOSITION i

j TSB ACTION DATE: 12/30/96 TSTF ACTION lif applicabiel DATE:

[ ] APPROVED [ X ] MODIRED [ ] REJECTED [ ] WITHDRAWN [ ] REVISED [ ] APPEALED Commente Commente:

{ Ftrward HICB eveiustion to TSTF to request revision to changes, j 12/30/96 DJohnson drafted letter and submitted for final.

f

}

t i

STS FILE AND RECORD DATA CHANGES t

j ACTION SY DATE ACTION BY DATE WP Fuse Chenoes Updated Certined 1

Changee Asseee Database 1 Freefed Updeced j Retumed for Comment Resolutson j Corrections Database Updated a

l Control Booke Memo w/h.c. Sent l Updated to TSTF/NRC

) BBS Fuse Peuhage

Updeced Filed

0

VOMIS\TYLA-NO.019 1

_