ML20024H403

Rev 8 to Inservice Testing Program Plan for Pumps

ML20024H403
Person / Time
Site:	Byron
Issue date:	05/23/1991
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20024H399	List: ML20024H398 ML20024H403 ML20024H404
References
PROC-910523, NUDOCS 9106030263
Download: ML20024H403 (45)

Text

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ENCLOSURE 2 i

9106030263 9105 3 PDR 2

P ADOCK 03000434 PDR PLB/sct;lDB67:16

O SECTION 3.0 TNSERVICE TESTING PROGRAM PLAN FOR PUMPS O

O

u Rev. 9 Table of Contents

\\

3.e i res" ice Testing P nore- 0.en f '.

Pumps 3.1 Program Description 3.2 Program References 3.3 Program Tables 3.4 Notes Note 1

" Deleted" Note 2 Pumps Lubricated by Pumped Fluid Note 3 Pump Idle Suction Pressure Note 4

" Deleted" (incorporated into PR-6)

Note 5 Essential Service Water Make Up Pumps Inlet and Differential Pressure.

Note 6 Essential Service Heter Booster Pump Note 7 Boric Acid Transf er Pumps 3.5 Relief Requests PR-1 Pump Viba ation PR-2 Pump Aaar4.'; 7* pctatures b

PR-3

" Deleted" PR-4

" Deleted" PR-5 Use of Ultrasonic Flowmeters PR-6 D16ael Oil Transfer Pump Differential Pressure DRAFT PR-1 Pump Vibration l

DRAFT PR-2 Pump Bearing Temperatures DRATT PR-7 SX Pump Vibration l

<ee.,e,ee34D,e3e4,1, 3.e - Page 1 o, 1 j

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SECTION 3.1 PROGRAM DESCRIPTION

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Rev. Q EEQMENLEISCElf1E'll The Pump Innervice Testing (TST) P roc r am Plan for Byron Nuclear Power atarten U.tita 1 o.M 2. le implemented in accore wc> with the r eq u i r e'w n s of c btettler. IWP of Section XI of the ASME Doller and pressure Vessel u

Code, 1983 Edition, throuch the Summer of 1983 Addenda.

Wher= these requirements are determined to be impractical, specific rollet is requested.

Additional pump relief requests may be necessary and these will be identified durina subsequent inservice tests.

Byron Station received a Safety Evaluation R+ port (SER) on September 15, 1988 and is listed in Table 2 of HRC Generic Letter 89-04 as a plant with a reviewed IST Program and SER issued.

Per NRC Generic Letter 89-04, the status of relief requests as stated in the SER la unchanged.

Any modifications to Byron Station relief requests approved in the SER (PR.1 through PR-5),

whieb are covered by one of the eleven positions discussed in NRC Generic Letter 89-04 Attachment 1, must be performed in accordance with the guidelines given in the Generic Letter.

Pre-approval is granted for all relief requests submitted which are consistent with the eleven positions given.

New relief requests dealino with a position ntt covered by NRC Genetic Letter 89-04. At t actune ut 1. must receive NRC approval prior to implementation.

The pwnpa subject to 151 testing are those pumps which are identified in accordance with the scope of ASME Section XI, subsection-IWP-1100:

"IWP-1100 SCOPE... This Subsection provides the rules and requirements for inservice testing of Class 1,

2, and 3 cartrif ugal and displacement type pumps that are installed in light-.c.can neslei? nuclear power plents, that are required to perform a speel'le O'

function in shutting down a reactor or in mitigating the consequences of an accident, and that are provided with an emergency power source.

The results of these tests are to be used in assessing oper ational readiness of the pumps during their service life."

The only exceptions are the diesel driven auxiliary feedwater pumps (1AP01PB and 2AP01PB). and essential service water makeup pumps (OSX02PA and OSX02PB), w r~

are not supplied by an emergency power source. The diesel oil transter pumps (1/2 DOO1PA, 1/2DOO1PB, 1/2DOO1PC and 1/2DOO1PD) are classified none-ASME Class G.

Pump reference values shall be determined from the results of a preservice test, which may be run during preoperational testing, or from the results of the first inservice test run during power operation.

Reference values shall be at points of eperation readily duplicated during subsequent inservice testing. Additional reference values may be necessary and these will be taken in accordance with IWP-3111 and 3112:

1.

After a pump has been replaced.

2.

When a-reference value or set of "elues may have baen affected by sepair or routine servicing of e pump.

"r 1.

I! It is necessary or desirable f. e t nema ether reason than 1 or 2 above.

(0089D/0034D/030491) 3.1 - page 1_of 2

_.___.-_______._____-._m___._..___,._______..___.-~._..__._--____.._m____..

Rev. 9 Per NRC Generic Letter 89-04, Attachment 1, Position 38, whenever pump data is determined to be within the Required Action Range, the pump is inoperable, and the Technical Specification LCO Action statement time starts.

In the event a pump-must be declared inoperable as a r esult of inservice testing, limitations on plant operation will be as stated in the Technical Specif1 cations.

.Section XI of the ASME Doller and Pressure Vessel Code shall not be construed to supersede the requirements of any Technical Specification.

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(0089D/0034D/030491) 3.1 - page 2 of 2

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i SECTION 3.2 PROGRAM REFERf:NCES 4

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Rev, 1 l

l EP.2GPRi. EEfifM!.CLS 1.

Title 20, Code of Pederal Regulations. Part 50, Domestic Licensino of Preduction

.,d t..

ation Facilities, p.;.

ularly Sectior. S 0, ', ;.. odes ono atandards, 2.

ASME Doiler and Pressure Vessel Code,Section XI, Rules for Inservice Inspection of 11uclear Power Plant Components, 1993 Edition, Summer 1983

'idenda.

3.

ASME/A13SI OM-1987, Operation and Maintenance of fluclear Power Plants, including 1989 Addenda, Part 6, Inservice Testing of Pumps in Light Water Reactor Power Plants.

4.

U.S.

tiuclear Regulatory Commission, Generic Letter 89-04, Guidance on Developing Acceptable Inservice Testing Programs.

5.

Byron Station UPSAR, Section 3.7.6.1, inservice Testing of Pumps, 6.

Byron Station Technical Specitication, 3/4.0.5, Generic ASME Program Requirement.

7.

Byron Station Technial Staff Procedure. BVP 200-1, ISI It equ i r ements for Pumps.

t1RC Safety Evaluetion Reports (SER's):

a.

09/15/88 (Initial Program Plan Review) b.

09/14/90 (Supplemental Program Plan Review) 9.

Dyron Stalon IST Pump Program Plan Review Responses (file: 3.11.0240):

a.

Byron Letter 88-1321 (Initial Program Plan Review Response) h.

Byron Letter 90-0724 (Supplemental Program Plan Review Pesponse)

(0089D/0034D/030491) 3.2 - page 1 of 1

g 1

h SECTION 3.3 PROGRAM TABLES

_~ _

Rev. 4 IADLE DESCRIRI1CH The following information is included in the summary tables:

The first four columns include the unique Byten Station cguipment Piece N umbe r, the P ump N ame, the Code Class, and the system P& ID for t h,e p ump listed.

Speeds Speed will be measured by a tachometer for variable speed drives.

Inlet oressure:

Inlet pressure will be measured via permanently installed gauges or other means, provided the equipment accuracy meets the requirements of IWP-4150.

This is to be measured both before pump startup and during the test.

Rifferential presture:

Differential pressures will be measured using calibrated differential pressure gauges or by recording the difference between calibrated inlet and outlet prassure gauges.

U_qw_ late:

Plow rates will be measured using permanently installed instru-mentation or other means, provided that equipment accuracy meets the requirements of IWP-4150.

Vibration: Vibration measurement shall be made using portable or hand held instrwnents at locations as marked er. U.c e u.p:.

(

Qearing Temeerature Bearing temperature will be measured by permanently lustalled devices where such devices are present.

Portable measurement devices will be used where temperature wells are provided.

Per IWP-3300, bearing temperatures are required only once per year.

Dyron Station takes the data for bearing temperatures once per year during summer testing and following maintenance on a pump if bearing temperatures may have been affected.

Test Interval:

An inservice test shall be run on each pump nominally every 3 months during normal plant operation, in accordance with IWP-3400, except during periods when the pump is not required to be operable.

kubIlsation Level Lubrication level will be observed through sight glasses for the pumps listed in the program.

Revision: The current revision rf the program is listed.

Table Pece:

The table pages are nuubered sequentially and show the total number of pages.

[

t (0089D/0034D/030491) 3.3 - page 1 of 1

I ti SERV ICE T.E S T I i PROGR AM P L'A N Ref 9

CLASS 1,

2, FUMPS BYRON NUCLEAK POW 1R 'ITATION UNITS 0, 1,

2 C

TEST PARAMETERS L

A LUBRI-S SYSTEM INLET DIFF FLOW BEARING TEST CATIOil PUMP NUMBER _

PUlif FLAME S

P & ID._ _SEEED PRES EMS RATE VIHEAIJQtL _JEMP 11!IERVAL LEVEta_... RDiARE5 _

1AF0lPA Auxiliary feedwater 3

M-37 No Yes Yes Yes PR-1 Yes Quarterly Yes pump (Motor) 1AF0lPB Auxiliary feedwater 3

M-37 Yes Yes Yes Yes PR-1 Yes Quarterly Yes pump (Diesel)

'~

2AF01PA Auxiliary teedwater 3

M-122 No Yes Yes Yes PR-1 Yes Quarterly Yes pump (Motori 2AF0lPB Auxilta.y teedwater 3

M-122 Yes Yes Yes Yes PR-1 Yes Quarterly Yes

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pump tc;esel)

[0CC01P Component :coling 3

M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 3 pump ICC0lPA Component. :coling 3

M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes

[ote 3 pump 1CColPB Componen ooling 3,

M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 3 pump 2 C' PA Component cooling 3

M-66 No Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 3 Pump L_ _ _

2CC0lPB Component :uoling 3

M-66 No Yes-Yes IPR -S PR-1 PR-2 Quarterly Yes Note 3 4

l Pump ICS0lPA Cont aa rutent spray 2

M-46 No Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 Pump

'lC50lPB Co n t a i rur.e n t spray 2

M-46 No Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 Pump 0090D/0034D/030491)

_.. k _. _ _.

3.3 TABLE 1 ot 4 c

I'N S E R V ICE

.T E S T'I t.

PROGR AM PLAN Rev. 9

{

CLASS.1, 2,

& 3 PUMPS BYRCN NUCLEAR POWER STATION UNITS O, 1,

2 j

C i

TEST PARAMETERS L

i A

8 LUBR_,

S SYSTEM INLET DIFF FLOW BEARING TEST CATIGfi' PUMP 1{UMDER,_

EUME_IIAME.

_S__. _E_ LID _ _SELED _ERES_.EREL EHE Y1BEAIIRIL TEMP

. INTERVAL LEVEL.._. Ef; MARL I

,2CS01PA Containrient spray 2

M-129 No Yes Yes Yes I

PR-1 PR-2 Quarterly No Nc N 2 Pump

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2CS01PB Contaicment spray 2

M-129 No Yes Yes Yes PR-1 PR-2 Quarterly No Note 2 c

Pump l

ICVOIPA Centrifayal charging 2

M-64 No Yes Yes PR-5 PR-1 Yes Quarterly Yes P"E

'1CV01PS Centrituaal charging 2

M-64 No Yes Yes PR-S PR-1 Yes Quarterly Yes Pump 2CV01PA Centrifugal charging 2

M-138 No Yes Yes PR-5 2R-1 Yes Quarterly Ye; Pump

_f 2CV01PB Cenr.rifugal charging 2

M-138 No Yes Yes PR-5 PR-1 Yes Quartert Yes Pump l.1D001PA Diesel oil. transfer 3

M-50 No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 pump ID001PB Diesel 11 transfer 3

M-50 No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 Pump IDOO1PC Diesel oil transfer 3

M-50 No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 Pump 1DOO1PD Diesel oil transfer 3

M-50 No Yes PR-6 PR-5 PR-1 PR-2 Quarterly No Note 2 pump 0090D/0034D/030491) 3.3 TABLE 2 of 4 ci

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I'N S E R V ICE

'T E'S T I..

PROGRAM P.L A N Re i _ s l

CLASS 1, 2,

& 3 PUMPS BYRON NUCLEAR' POWER STATION j

UNITS-0, 1, ' 2 -

l

.C TEST PARAMETERS L

A LUBRI-I

-S SYSTEM INLET DIFF FLOW' BEARING TEST CATIO.8 PUMP NUMBER _.

PUMP NAME S

P & ID_

SPEED E E5_ ERES RATE _V_lBRAILQtL._IEMP

. INTERVAL

.,_LEVEk _ EEngggs__

E 2SIO1PB Safety injection 2

M-136 No Yes Yes Yes PR-1 Yes Quarterly Yes pump OSX02PA Essential service 3

M-42 Yes Yes Yes PR-5 PR-1 PR-2 Quarterly Yes Note 5 water makeup pump (Diesel)

.0SX02PB Essent. al service 3

H-42 Yes.

Yes Yes PR-5 PR-1 PR-2 Quatcerly Yes Note 5 water makeup pump (Diesel)

ISXO1PA Essentical service 3

M-42 No Yes Yes PR-5 PR-1 Yes Quarterly Yes Note 3 water pump ISX01PB Essential service 3

H-42 No Yes Yes PR-5 PR-1 Yes Quarterly Yes Note 3 water pump 2SX01PA Essential service 3

M-42 No Yes Yes PR-5 PR-1 Yes Quarterly Yes Note.3 water ptung 2SX01PB Essential service 3

M-42 No Yes Yes ! PR--S PR-1 Yes Quarterly Yes Note 3 water pump i

l_.__--

2SXO4P Essentia1 service 3

M-126' Yes Yes Yes 7et PR-1 Yes Quarterly Yes Note 6 water b<. aster pump l0 WOO 1PA Contr zoom 3

M-118 Ho Yes Yes Yes PR-1 PR-2 Quarterly Yes Note 3 chilled water pump OWOO1PB Control room 3

M-118 No Yes Yes Yes PR-1 PR-2 Quarterly Yes Note 3 chilled water pttnp

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0090D/0034D/030491) 3.3 TABLE 1 of 4

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SECTION.1.4 i

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NOTES i

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" Deleted" HDIll The Diesel 011 Transf er (1DOO10A.D and 2DOO1PA-D). Residual Heat Pemoval (1RH01PA,B and 2RH01PA,0) and Containment Spray (ICS01PA,B and 2CS01PA,B),

pumps cannot be measured for lubrication level, these pumps are lubricated by the fluid pumped and hence have no indication for lubrication level.

NOTE 3 The Component Cooling Water pumps (OCC01P, ICC01PA B and 2CC01PA,B), Essential Service Water Pumps (ISX01PA,8 and 2SX01PA.B), sod the Control Room Chilled Water Pumps (OWOO1PA, B) are in systems which are in continuous operation.

"~i idle inlet pressure for these pumps cannot be obtained without anterrupting normal system operation and causing system transients.

The idle inlet pressure will be recorded only if the pump to be tested is not in operation at the start of the test.

Proper pump operation is assured by continuous pump operation as well as quarterly monitoring of the remaining 151 pump parameters.

O

" Deleted" tiRIll The essential Service Water Hake Up pumps (OSX02PA and OSX02PB) are submerged, vertical well type pumps.

They take their suction from a River Screen House (RSH) forebay.

The inlet suction pressures for the pumps can not be measured in as much as they are well type pumps, r ur the rmo r e, inlet pressure shall be calculated f rom a dif ference of river and pump level.

The allowable range for the inlet pressure shall be determined from high and low river leve?

specified in the Technical Specifications and pump vendor information.

ROTE 5 The 2LX04P Essential Service Water Booster Pump was added to the IST Prograts following pressure and flow instrumentation irsta11ation via Modification M6-2-90-011 during the fall 1990 Unit 2 outage iD2Fn2; The ISX040 pump will be added to the IST Program followina comPletian a' a similar i n s t r ume nt at io n nodificasian planned for the ra11 lukt Itai t t outave.

I (00910/0034D/030491) 3.4 - page 1 of 2

.._..______-__--m.-_

Rev. 9 l!21E,1 The Boric Acid Tiansf er Pumps f all outside the scope of the I ST Pump P Lg r am

• M =* > 1t o f the ASME Code b f. t * *n XI, paragraph IWP 1100 beccute s r.e y o t e

.c s provided with an emergency power source and Byron Station As analysed as a

" hot shutdown" plant and these pumps are not required to maintain hot shutdown conditions.

Also, the RWST (Pefueling Water Storage T*.ak) is a Seismic Category 1 Structure as described in the UFSAR Table 3.2-1.

Paragraph 3.2.1.1 states that Seismic Category 1 Structures are designed to withstand design basis accidents including tornadoes.

Therefore, the Boric Acid Transf er Pumps required to be included in the IST P:ogram to satisfy any Design Basis are not Accident.

Engineering correspondence CHRO:i i 161733 daLed January 17 1991 supports these conclusions.

However, because of the operating significance of these pumps, Byron Station is developing a testing program for these pumps outside the IST Program.

1 1

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(0091D/0034D/030491) 3.4 - page 2 of 2

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

. ~... - - - - -

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O SECTIOtl 3.5 RELIEF PEQUESTS O

F O

l Rev. 9 RELIEr PEQUEST NO. PR-1 (TML1WMBER:

\\11 peps in t hr prearam pier.

2.

tWMDE1LCL.1TIMS:

42 pumps.

3.

AEHLCCDC_ CLASS 2&1 4.

ASMLC20UIC'I1C1LX1 REC 21ErHIUls:

in raference to Table IWP-1100-2,

" Allowable Ranges of Test Vuantitles", pump vibration is to be measured in and compared to values given in mils displacement.

5.

DASIS. TOR _EILitt The inessurement of pump vibration la required so t. hat developing problems can be detected and repairs initiated prior to a pump 'becoming inoper able. Measurement of vibration only in displacement quantitles does not take into account frequency which is also an important factor in determining the severity of the vibration.

S.

AL,IEEl(AI L lgET1HQ:

The ASME Code minimtun standards require measurement of the vibration r.mplitude in mils (displacement).

Dyron Station proposes an alternate program of measuring vibration velocity (inches per second) which la more comprehensive than that required by Section XI.

Thic technique is an industry. accepted method which is much more meaningful and setisAtive to small changes that are indicative of developir.g mecl.anical problems.

These velocity measurements detec't not only high amplitude vibration, that indicate r major mechanical problem such as misalignment or unbalance, but also the equally harmful low amplitude, high frequency vibration due to bearing wear that usually goes undetected by simple displacement measurements.

The allowable ranges of vibration and their associated action levels will be patterned after the guidelines established in ANSI /ASME OH-6 Draft D.

Table 6100-1 and figure 6100-1.

These ranges will be used in whole to assess equipment operational readiness for all components except the Essential Service Wate Make-up pumps OSX02PA & D.

The acceptable performance range for all components except the Essential Service Water Hake Up Pumps OSX02PA & D will be i 2.5 times the reference value, not to exceed.325 inches per second.

The alent range, at which time the testing frequency would be doubled, will be 2.5 to 6 times the reference value, not to exceed.70 inches per second.

Any vibrating velocity greater than 6 times the reference value or greater than.70 inches per second will require correctivo actions to be performed on the affected component.

The OSX02pA & Fi rumps, howavar, ata mibmarqad vartimi pil type pumps utilisino diesel vngina ruime movers rated et A continuous break horse power anu* nie cvupled ditsetly to these engineF through right angle gear drise e.

these prima movers and gear drivas are elevated to protect them against the technical speelfication postulated flood scenario and the pumps hang vertically down 41' 4"

from the bottom of the right angle gear drive to their respective pump suction inlet basket strainers, These pumps are of a water lubricated, hollow line shaft drive, seven stage type and utilise rubber line shaft bearings along their length.

(0091D/0034D/030491) 3.5 - page 1 of 16

P. e v. J Therefore, these OSX02pA L U pumps, due to their design, will esperience vibration velocity readinas that will normally exceed 0.4 inches per second.

A vibration of this rnaunitude would fall into the "Alett' snge ?[ ' he Mle,1, ASME < % 6 7 t l e 61'.m and w e n. ?,

e,.a. e

" Doubling the Test riequency'.

For

t. h e s e reasons, given the inherent operatino characteristics of the USX02rA L B pumps and th'; t esting constr aints of the A!!Sl/ ASME (H-6, Draft 9 Docurnent, the uldence set forth in Table 6100-1 and figure 6100-1 will be slightly sodified so as to more accurately assess equipment operational readiness.

The acceptable performance tange of the OSXO2PA & D pumps will be t 2.5 times the reference value, not to exceed.60 inches per second.

The alert range, at whi;h point in time the testing frequency would be doubled, will be > 2.5 to 6 times the reference value, net to exceed.90 inches per second.

Any vibration velocity greater than 6 times the reference value or areater than.90 inches per second wili require corrective actions to be performed on the affected component.

This reference value is established based on the guidance set forth in A!1Sl/ASME OM-6, l' raft 8 and prios operating history of these pumps.

The operating history consists of approximately 3 years of operation and testing, and provides eufficient data base from which to establish the aforementioned criteria.

This criteria is based upon a sufficient amount of baseline data to provide f or t he monitoring of pump degradation to the greatest extent possible given this prime mover / pump conf iguration.

For all pumps, evaluation of data, to assign equipment to the alert or action ranges, will be done within 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> (per IWP-3220 of Section XI).

This will be done using industry accepted vibration analysis equipment, such as a full spectrum analyser.

Vibration measurements f or all pumps will be obtained and t ecorded in velocity, inchen per second, and will be broadband untiltered peak

=

measurements.

The monitored locations for vibration analysis will be marked so as to permit subsequent duplication in both location and plane.

The frequency response range of the vibration transducers and their readout system shall be capable of frequency responses from one-third minimum pump shaf t rotational speed to at least one thousand hertz.

The Centrif ugal pumps in the program will have vibration measurement.

taken in a plane approximately perpendicular to the totating shaft in two orthogonal directions on each accessible pump bearing housing and in the axial direction on each accessible pump thrust bearing housing.

The Vertical Line Shaft Fumps in the preater will he"a ibretion

{

measurements taken on the upper motor bearino hou-irn : n

ee orthogone1 direccione, "ne of which is tht wie'. ditettaan.

(0091D/0034D/030491) 3.5 - page 2 of 16

l 1

i Pev.

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7 J'Jyllf1 CAT 1Q1{i Measuremente of vibration in mils displacement are not sensitive to small changes that sie i rid i e n t i ve of developing tacchanical problems.

Therefore, the proposed alternate triethod of mensutir.4 v i b t i> ' i n n tvo p l i t u d e in ine.js-ne end Ptnvide-addel as usance of the centinued opetability ot the pumps.

B.

APPLICADLE_Ilht_EEE10Di This talict is r equested once per quar t et during tne fitst inspection interval.

9.

i+rPE07ALlIATL'S '

a.

Pelief granted exceot (tom Required Action [or t he OSX02 A/f3 pumps per SER 9/15/8h-The SER evaluation concerns tegniding measuret6ent of the essential service water makeup pump inlet pressures were resolved and verbal approval to use this tellet request wmn obtained based on the December 12, 198R (ont er ence en11 wit h !!yr on/ ttr aidwood 151

membets, P. Chtzanowski ( fly r on flL A ), II. Rockhold and 5, linttley (EG f.

G ! d aho / til'C ).

b.

Felief 9tanted pet flPC 'senetic Lattet "9-04.

(0091D/0034D/030491) 3.5 - page 3 of 16

l i

Rev. 9 RE!.1Er REQUEST HO, PR-2 1.

P1'lil'_11L'Mf1E t 9CC01P, ICC0lPA l' O ll*

% C01PA, 2CC0100, 1 C50 3.

1CS01PB, itS01rA, 2C50rPD, ID001PA. Ih001PB, ID00lPC, 10001PD, 2D001PA, 2D001PB, DOO1PC, 2D001PD, IRC0tPA, 1RH01PB, 2RH01PA, 2 R1101 PB, OSX02PA, OSX02PB, OWOO1PA.

OWOO1PB 2.

!MiDEILfLITEMS:

25 pumps 3.

ASME CODE CLAGS:

2&3 4.

AStiC_.fCpluSICII RIL2LEEQRI RCittl[IS :

Per IWP-3100, inservice Test Procedure pump bearing tefaperatures are required to be measured to detect any change in the mechanical characteristics of a bearing, 1WP-3500(b) requires three successive readings taken at ten minute intervals that do not vaty more than M.

5.

DASITLf.QA_EELIEE:

a.

These pumps' bearings are not provided with permanent temperature detectors or thermal wells.

Therefore, gathering data on bearing ternperature is impractical.

b.

The only ten pe r M t.re measurement s pessible are from the bearing housing.

To detect high bearing ternperature at the bearing housing would require that the bearings in question be seriously degraded, Measurement of housing temperature on these pumps does not provide c.

. positive inforrnation on bearing condition or degradation.

For esample, the bearings on the Essential Service Water pumps (OSX02PA, OSX02PB) and Diesel 011 Transfer Pu;eps (ID001PA thru D and 20001PA thru D) are co. led by the pumped fauld.

Therefore, any heat generated by degraded bearings is carried away by the cooling fluid and would not be directly measured at the bearing housing.

6.

ALIgEti AIE_IESIJtig: No direct alternate test is proposed for bearing temperatures.

However, measurement of hydraulle parameters and vibration readings do provide a more positive method of monitoring i

pump condition and bearing degradation.

7 MSI1rlcAIloli By measurino pump hydraulic parameters and vibration velocity, (as described in PR-1), pump operability _and the trending of mechanical degradation is assuied.

Also, since these parameters (i.e., hydraulle parame ar= nM vibrationi are measured riuarterly, the pump meenans tal ec.noitica will be more accurately vetermined than l

would be possible by measuring b=erino temPeretute on a yaarly basis.

l (0091D/0034D/030491) 3.5 - page 4 of 16

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

1 I

Rev. 9 1

8.

APPLICABLE ?!ME PERIQD This telief is requested once per year, during the first inspection interval.

9.

AE12CNAL STAd i.

Relief granted per SER 9/15/88.

a.

b.

Rellef granted per flRC Generic Letter 89-04.

c.

Relief granted per SER 9/14/90.

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(0091D/0034D/030491) 3.5 - page 5 of 16

{

V 4

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Pev, 9 i

t RELIET REQUEST 130. PR-3

" Deleted" i

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1 1

1 t

4 i-I l

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4 I

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m,%v.m..,3-.w-----nam-s-,.+.,n-in

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U Rev. 9 RELIEr REQUEST 130. PR-4

" Deleted" i

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(0091D/0034D/030491).

3.5 - page 7 of 16

Rev. 1 O-REh1EP REQUEST tlO. 08-5 1.

[1'liL10.d.% R t OCC01P, ICrollA. ICC01Pt, KC01PA. - "C0100. ICV 01PA, I CV 01 Pil, 2Ct01PA, 4CV01ID, iD001PA, ID001PD, IDOO1Pr.

1DOO1PD, 2DOO1PA. 2 D001 P11, 2DOO1PC, 2D001PD, OSX02PA, OSX02PD, ISX01PA, ISXO1PD, 2SX01PA, 2SX01PB 2.

tMiDELCLIITES:

23 pumps kStiEJCDI_. CLASS:

3.

2 f. 3 4.

AStiE_. CODE. SECI1O!I XI REQV.1EElitilIS :

Per IWP-4120, the full scale range of each instrument shall be three times the reference value or less.

5.

DASIS._ICR RELIEtt The full scale range of ultrasonic flowmeters, used to collect Section XI flow data, exceed three times the reference value.

6.

ALIEhllAIE_IESTJtl_Q t Ultrasonic flowmeters, with digital readouts and j

totaliser features will be utilised to obtain Section XI flow data.

7 JUSIlf.1CAIl01{ t Ultrasonic flowmeters provide an accurate means of measuring flowrate.

They utilise a digital display whose accuracy is independent of the full scale range.

The ultrasonic flowmeter is well within the requirescenu v! INP-4110 and IWP-4120, which ref er to an instrument accuracy of t ot full scale for er instrument with

_( )

a range of three times the reference value or less.

The following examples will illustrate this point. The component cooling pumps (OCCV1P, 1/2CC01PA, and 1/2CC01PB) have a reference value of approximately 4500 gpm.

Using the Code requirements, an instrument with a full scale range of 13,500 gpm (3 x 4500 gpm), the acceptable instrument accuracy is i 270 gpm (.02 x 13500 gpm).

Using the ultrasonic flowmeter, with an accuracy of i 4% of the indicated reading, provides an instrument accuracy of i 180 gpm.(.04 x

4500 gpm).

The diesel oli transf er pumps (1DOO1PA-PD and 2DOO1PA-PD) have a reference value of approximately 25 gpm.

Using the Code requirements, an instrument with a full scale of 75 gpm (3 x 25 gpm) the acceptable instrument accuracy is 1 1.5 gpm (,02 x 75 gpm).

Using the ultrasonic flowmeter with an accuracy of i 4% of indicated reading will provide an instrument accuracy of r 1.0 gpm (.04 x 25 gpm).

Use of an ultrasonic flowmeter, with totalizer and integrator feature, instead of other instruments allowea by IWP-4110 and IWP-4120, will provide more pracisa and m; curate flow mannutements.

O (0091D/0034D/030491) 3.5 - page 8 of 16

..m_

Rev. 9 8.

AITLLCABLE TIME PERICDt This relief is requested once per quarter, during the first inspection interval.

9.

APPDOV?1 STAWS Relief granted per SER 9/15/88.

a.

j b.

Relief granted per flRC Generic Letter 80-04.

c.

Relief granted per SER 9/14/90.

I O

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(0091D/0034D/030491) 3.5 - page 9 of 10

~. - -

Rev. 9 O

RELIEr REQUEST llo. PR-6 1

PUtifj(U} IDEE:

1DOO1PA. 1D0011D, ID001PC, ID001PD.

2bo01PA, 2D00108, 2D001rc 2D001PD.

2.

!!UlillE!LCf_.IIEMS :

8 pumps 3.

ASMIEDE._ CLASS :

3 4.

ASME CODCmSEfIl011 XI REDVlECMEl(IS:

Per IWp-3100, differential pressure shall be measured on all ptops that are tested.

5.

D ASIE-.ECILIELIEE:

These pamps are positive displacement Diesel oil Trans fer Pteps.

The pump differential pressure is not a factor affecting pump performance, but rather dependent only on the inlet pressure to the pump.

As the pump discharge pressure is constant, and the inlet pressure varies with tank level, the differential pressure is not a valid oferational parameter.

6.

ALIIfflAIE. TESI111G Ptep discharge pressure for positive displacement pumps is a valid operational parameter.

This will be used to evaluate the Diesel 011 Transfer Pumps performance.

7 JUGIlf12AIlgt{

Using pump discharge pressure in lieu of pump differencias pressure will provide meaningf ul pump performance data fer 7valuall:w.

of. operational readiness of the Diesel Oil Transfer Pumps.

8.

AEELifAHLE IIME_.tIRIOR:

This relief is requested once per quarter during the first inspection interval.

9.

AEfE2YAL_SIAIUS:

Relief granted per SER 9/15/88.

a.

b.

Relief granted per liRC Generic Letter 89-04, c.

Rellof granted per SER 9/14/90.

(0091D/0034D/030491) 3.5 - page 10 of 16

Rev. 9 DRAFT REVISION OF RELIEr PEQUEST NO. PR-1 l

1.

EUtiE.JMtiEE:

All pumps in the program plan.

2.

UUMBER Or ITEMS:

42 pumps.

3.

ASME CODE CLASS:

2&3 4

A511E CODE. SECTIOff XI ROUIREMENTS:

In reference to Table IWP-3100-2, " Allowable Ranges of Test Quantitles", pump vibration is to be measured in and compared to values given in mils displacement.

5.

BASIS FOR RELIEF The measurement of pump vibration is required so that developing problems can be detected and repairs initiated prior to a pump becoming inoperable.

Mearurement of vibration only in displacement quantitles, as require i by the ASME Code, does not take into account frequency which le alsu an important factor in determining the severity of tha vibretino.

6.

ALTERNATE TESTING:

The ASME Code minimum standards require meat.urement of the vibration amplitude in mils (displacement).

Byron Station proposes an alternate program of measuring vibration velocity (inches per second) which is more comprehensive than that required by Section XI.

This technique is an industry-accepted method which is much more meaningful and sensitive to small changes that are indicative of developing mechanical problems.

These velocity measurements detect not only high amplitude vibration, that indicates a major mechanical problem such as misalignment or unbalance, but also the equally harmful low amplitude, high frequency vibration due to bearing wear that usually goes undetected by simple displacement measurements.

The allowable ranges of vibration and their associated action levels will be patterned af ter the guidelines established in ANSI /ASME OMb-1989, Part 6, Table 3 and Table 3a.

These ranges will be used in whole to assess equipment operational readiness for all components except the Essential Service Water Maka-up Pumps OSX02PA f. B (see PR 7).

O (00910/0034D/030491) 3.5 - page 11 of 16

Rev. 9 e

a DRAFT REVISION OF RELIEr REQUEST NO. PP-1 l

The acceptablo performance range for all componentt (except the Essentini Service Water Make Up Pumps OSX02PA & D) will be 1 2.5 times the reference value, not to exceed.325 inches per second.

The alert range, at which time the testing fiequency would be doubled, will be > 2.$ to 6 times the reference value, not to exceed.70 inches per second.

Any vibrating velocity greater than 6 times the reference val e or greater than.70 inches per second will require corrective actions to be performed on the affected component.

Foi 22" pumps, evaluation of data, to assign equipment to the Alert or Required Action tanges, will be done immediately per the requirements of HRC Ceneric Letter 89-04, Attachment 1, position 8.

This will be dono using industry accepted vibration analysis equipment, such as a f ull spectrtun analyzer.

vibration measurements for all pumps will be obtained and recorded in velocity, inches per second, and will be broadband unfiltered (filtered-out (IRD) or total (TEC Smart meter)) peak measurements.

The monitored locations for vibration anhlysis wi41 be marked so as g-~

to permit subsequent duplicatiar in both locatter. und plane.

V The frequency response range of the vibration transducers and their tendout system shall be capable of frequency responses from one-third minimum pump shaf t t otational speed to at least one thousand hertz.

The Centrifugal Pumps in the program will have vibration measurements taken in a plane soprosimately perpendicular to the rotating shaft in two orthogonal d' on each accessible pump bearing housing and in the axial di' unch accessible pump thrust bearing housing.

7.

a s n r1CATIItit Measu r v,., t vibration in mils displacement are not sensitive to small changes that are indicative of developing mechanical problems. Therefore, the proposed alternate method of measuring vibration amplitude in inches /second (in conjunction with the use of the allowable vibration ranges and limits as established in ANSI /ASME OMb-1989, Part 6) provides added assurance of the continued operability of the pumps.

8.

Afl11 CABLE IIME PERIODI This relief is requested once per quarter during the first inspection interval, 9.

APPROVAL SIA"IU.St This tellef tequest is e proposed eb wra

• hu approved PR-1 and is tt'2I appr ovad f or +1se.

Formt1 written approval from the NRL is required grier to chancing the vibiation monitoring points on the vertical line shalt pumps in the program.

(1/2RH01PA.

1/2RH01PB, 1/2CS01PA, 1/2CS01pB).

Expedited review and approval is requested.

(0091D/0034D/030491) 3.5 - page 12 of 16

h Rev. 9 a

DRAFT REVIS!Ot1 OF RELIEr REQtfEST 110. PR-2 l.

F1'HPE111]ER:

All pumps in the pr ogr arn plan.

2.

11tfMBER Of' ITfliS 42 pumps 3

ASME c0DE CLASS:

2&3 4.

ASME CODE. SM1QN XI REQijlffl1EllIS:

Per IWP-3100. Inservice Test Procedure pump bearing temperatures are required to be measured to detect any change in the mechanical characteristics of a bearing.

IWP-3$00(b) requires three successive tendings taken at ten minute intervals that do not vnry more than 3%.

5.

EASISEILRELIEC a.

The CC, CS, DO, Ril, SX and WO pumps' (25 total) bearings are not provided with permanent temperature detectors or thermal wells.

Therefore, gathering data on bearing temperature is impractical.

The only temperature measurements possible are from the bearing housing.

Measurement of housing temperature on these pumps does not pros ado positive information on bearing condition or degrada*fon.

Tar esample, the bearings on the Essential Service Water pumps (OSX02PA, OSX02PD) and Diesel 011 Transfer Pumps (ID00lPA thru D and 2000lPA thru D) are cooled by the pumped fluid.

Therefore, any heat generated by degraded bearings is carried away by the cooling fluid and would not be directly measured at the bearing housing.

b.

Even those enses where bearing temperature monit> ring equipment la available, bearing temperature measurements will not provide significant additional information regarding bearing condition otbar than that already obtained by measuring vibration. Measurement of vibration provides more concise and consistent information with respect to pump and bearing condition.

The usage of vibration measurements can provide information as to a change in the balance of rotating parts, misalignment of bearings, worn bearings, changes in internal hydraulle forces and general pump integrity prior to the condition degrading to the point where the component is jeopardized.

Bearing temperature does not always predict such problems, c.

An increase in bearing temperature most r'itan does not occur until the hearina has deteriorated to a point where additionnl pwnp damage may ceeur.

Haaring temparatures ata also etfected by the temperature al the medium being pwnred, thus tne hydraulic and vibration readings are more consistent.

l l

(0091D/0034D/030491) 3.5 - page 13 of 16 I

Y Rev. 9 a

a DRATT REVISIOle Or l'Et,l Er I'COUEST 110. PR-2 l

l 0.

ALIffMAII._IESIll[Q Quarter ly measur er-ent of hydraulle parameters and vibration readings provide a more positive teethod of monitoring pump condition and bearing degradation.

7.

JrJ3IIIlghTICll By measuring pwnp hydraulle parameters and vibration velocity, (as described in PR-1), pump operability and the trending of mechanical degradation is assured, Also, since these pararneters

+

(i.e., hydraulle parameters and vibration) are measured quarterly, the purnp rnechanical condition will be more accur ately determined than would be possible by teensuring bearing temperaturn on a yaarly basis.

3.

ALELifADLE_.IlljE PEEICD.1 This tellef is sequested once per year, during the-first inspection laterval.

9.

Arff0 VAL STAIVDs This rellet is a proposed change to the approved pR-2 and is 11Q1 approved for use.

Forrnal written approval from the 11RC is required pr.lgt to use.

Capedited review and approval is requested.

(0091D/0034D/030491) 3.5 - page 14 of 10

Pev. 9 e

a O

DRATT PEL!tr V

R C'JJ EST tio. P R - 7 1.

W11EEliDER OSX02pA, D pumps 2.

tMi2EIL2f_IIItiS :

2 pumps.

3.

AStit CODE CLAS$1 2 f. 3 4.

A'iME_C20EJECI12tLXLEEQVl R CHrtlIS :

AllSI/ASHE OMb.1989. Part 6. Table 3 and Table la states that the acceptable performance range for all components will be 12.5 times the Reference Valve, not to exceed.325 inches per second.

The alert range, at which time the testing frequency would be doubled, will be >2.5 to $ times the Heference Valve, not to exceed.70 inches per second.

Any vibrating velocity greater than 6 times the Raference Valve or greater than,70 inches per second will require corrective actions.

5.

D ASIS _f2] LEE!.!ET:

The Essential Service Water Pumps OSX02pA f. D are of a very unique design (see Fig. 1).

"Ihe pump is attached to a horisontal diesel driver via a right angle gear drive, and the gear drive is located approximately 39 feet abevt the pump.

This configuration assures pwap cperability 4.aring the design basia O

flooding of the Rock River.

As would be tapected. this extreme configuration results in vibration characteristics which are different from pumps of a more conventional design.

The vibration levels for these pumps are consistently higher than the commonly expected values.

These pumps exhibited higher than usual vibration levels at the time of their installation (approximately 0.4 - 0.45 inesee f or the gear box and appromirnately 0.20 - 0.25 in/see for the pump), at which time they were verifled by the vendor to be operating properly. and have continued to display high vibration levels throughout their service life.

6.

ItLIIENATE TEST 11[Q:

Also characteristic of these pumps is the fact that the gear boa vibration levels are consistently higher than the pump.

vibration levels.

We propose that, in order to properly monitor this uniquely designed pump, separate acceptance ranges be used for the gear box and the pump. The vibration levels f or the purnp, though consistently higher than those for conventional pumps, display no significant upward trend over a period of approximately six years.

This is significant evidence that these vibration levels are characteristic of this unique design and do not indicate pump degradation.

However ua propert th3t +1thtar, caronnve criteria be used for the pump

• hen Nt the ta a r bm in "4-M*"

any deoreda.lon this may occur in the future.

O

, (0091D/0034D/030491) 3,5 - page 15 of 16

Pev. 9 a

O DRAFT P.ELIET REQUEST 110. PR-7 6.

ALIII'1(AIE_IEEllllQ (con *t)

Based on performance data. Pyron Station proposes that the following ranges be utill ed to monitor vibration levels for OSX02pA & Bt 05X02pA & D Acceptance Alert RequithdAction i

Location Range Range Range (In/see)

( i n /_ s te l (In/ste) finLate) pump 12.5 times

>2.5 - 6.0

1. 6.0 times reference times the reference value, not reference value or to enceed value, not 0.700 in/sec, O.325 in/see to esceed whichever is 0.700 in/sec lower Gearbox s ame, except s ame, except same, encept not to exceed not to exceed 0.900 in/sec 0.600 in/sec 0.900 in/see O

Additionally, although it is obvious that this pump has unusual characteristics and understandably high vibration levels, we pla.' to maintain conservatism in our maintenance practices and replace the gear assembly when parts are available to re-verify that the high vibration levels are characteristic of this pump declgn.

7.

JUSI1EICAIlgt{t By using acceptance ranges which are reflective of the intrinsic characteristics of the pump, perf ormance can be moniton ed more effectively and unnecessary and oncessive testing of properly functioning equipment can be avoided.

8.

AEILLCADLE TIMI PERIOD:

This relief la requested quarterly, during each inservice pump test, during the first inspection interval.

9.

APPROVAL STAIMjt Relief pending per SER 09/14/90.

Approval from the NRC la required REIDE to use of this relief request.

Expedited review and approval is requested.

l O l

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(0091D/0034D/030491) 3.5 - page 16 of 15

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