ML18052B403

From kanterella
Jump to navigation Jump to search
Rev 11 to EM-09-04, Inservice Testing of Selected Safety-Related Pumps
ML18052B403
Person / Time
Site: Palisades Entergy icon.png
Issue date: 10/06/1986
From:
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18052B401 List:
References
EM-09-04, EM-9-4, NUDOCS 8712080094
Download: ML18052B403 (23)
v • d • e


Text

......

\\ \\ \\ \\

ATTACHMENT 2

\\

Consumers Power Compan~

\\

Palisades Plant Docket 50-255

\\

\\ \\

/\\,

PALISADE~PROCEDURE EM-09-04 INSERVI9E TESTI~~OF SELECTED S~F. TY-RELATED\\UMP S December 1, 1g\\

\\

(

8712080094 871201 PDR I ADOCK 05000255 p

J PDR I

OC1187-0216-NL02

°'\\:)

  • '"4\\

~.~

tJj

~

N

~

'{\\

-~

PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE Revision and Approval Summary Proc No EM-09-04 Revision 11 Date 10/6/87 TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS

1.

C//.:4187 I

Date

3.

Recormnend Approval/Q-List (~ No r:2.~/? 7 Responsible Department Head~&le

5.

Date

1.

Periodic Review GESchrader 8/18/87 Date Date

2.

QA Concurrence

,-u_p

,/'*lk-,t::

4.

PRC Reviewed

6.

c~*\\/

&JN7jf}. 2 **

, __, t ATMS Incorporated

~/24/8"1*

  • Date qf;qk7 1 Data*
  • t

/D /; /11 (.Hr{

Date

____. ______ Dat_e _________________________________________________________________ _

Date Date em0485-0020f-93-154

PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE Proc No EM-09-04 Revision 11 1.0 2.0 3.0 4.0 5.0 5.1 5.2 5.3 5.4 5.5 PURPOSE SCOPE..

TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS Table of Contents Page i REFERENCES...

DEFINITIONS PROCEDURE....

FREQUENCY AND SCHEDULING OF TESTS (IWP-3400)..

REFERENCE CONDITIONS (IWP-3110, 3111 and 3112) **........

DATA EVALUATION (IWP-3220) **...

NONCONFORMANCES RECORDS.......

ATTACHMENTS 1

1 1

1 2

2 3

):.~*

4.

5, "Table 1 - Selected Safety Related Pumps" Attachment 2, "Table 2

- Allowable Ranges Of Test Quantities" Attachment 3, "Inservice Testing of Pumps Requests For Exemptions To Section XI" em0485-0020e-93-91

1.0 PURPOSE PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS Proc No EM-09-04 Revision ll Page 1 of S To establish procedures for inservice testing and evaluation of selected pumps, per ASME B&PV Code 1983 edition.

2.0 SCOPE This procedure provides general requirements for the performance and administration of the Inservice Testing Program for selected pumps. provides a complete listing of those pumps included in this program.

This procedure complies with all requirements of Reference 3.1, with the exception of the items for which relief requests have been submitted to the NRC; these relief requests are contained in Attachment 3.

3.0 REFERENCES

3.1 ASME Boiler and Pressure Vessel Code,Section XI, Subsection IWP, 1983.

3.2 10CFRSO.SSa 3.3 Technical Specification 4.3.c 3.4 Technical Specification 4.6.3 3.5 FSAR 6.9.2.l 3.6 Administrative Procedure 10.41, "Procedure on Procedures" 3.7 Administrative Procedure 9.11, "Engineering Analysis" 4.0 DEFINITIONS AND RESPONSIBILITIES 4.1 Alert Range - That rang~ (Attachment 2) for a given pump parameter outside the normal operating range in which an increased testing frequency is specified.

4.2 Required Action Range - That region (Attachment 2) outside the upper and lower limits of the alert range in which the pump is c.onsidered inoperable until further action is taken.

4.3 Pump Record - Information showing the history of a pump, including the original manufacturer's test data, surveillance test results and sig-nificant maintenance actions.

At Palisades, the pump record includes the vendor print files (original pump data), the complete TS surveil-lance test file (test results), the maintenance order files (pump maintenance documentation and post-maintenance test results) and the applicable surveillance test procedure basis document (source of test limits and basis).

em0485-0020a-93-91

4.4 4.5 4.6 s.o 5.1 5.1.1 5.1.2 5.1.3 5.l.4 PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS

., 1 Proc No EM-09-04 l

Revision ll

    • .. i, Page 2 of 5 ISI Engineer - That individual assigned by the Plant Projects Superin-tendent to oversee performance of the pump testing program, evaluate test data and identify the need for corrective action to the appropriate System Engineer.

Technical Specification Surveillance Program Administrator (TSSPA) -

The individual responsible for the administration of the Technical Specification Surveillance Program *.

System Engineer - Service manager for the system in question.

PROCEDURE FREQUENCY AND SCHEDULING OF TESTS (IWP-3400)

Inservice tests shall be run on each pump in the program nominally each quarter during normal plant operation. This test frequency should be maintained during shutdown periods if this can be reasonably accomplished, although this is not mandatory.

IWP-3400 requires that;:{

pumps not tested during plant shutdown be tested within 7 days after*~

the plant returns to normal operation.

In order to meet Technical Specification requirements, the pumps listed in Attachment 1 shall be tested prior to the reactor bein~ critical.

If a pump is operated more frequently than once per quarter, it need not be started or stopped specifically for the test. In order to take credit for normal pump operation, however, all required test data must be recorded per Reference 3.1.

If a pump is replaced or a repair is made which may have affected the pump performance* parameters as determined by the ISI Engineer based on the Code requirements and pump design requirements, the inservice test must be reviewed within a maximum of 9& hours after returning the pump

  • to service to verify existing reference values or to establish new values.

Return to service in this context implies operating during normal Plant operation. It should be noted that Tech Specs may re-quire this test to be performed and data evaluated prior to this 96 hour0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> limit (IWP-3111).

If pump parameters determined during an inservice test fall within the alert range, the test frequency shall be doubled; ie, the ISI Engineer and TSSPA shall cause the test to be performed at least every 45.days until the cause of the deviation is corrected and the existing reference values verified or a new set established.

em0485-0020a-93-9l

5.2 5.2.1 5.2.2 5.3 5.3.l PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS REFERENCE CONDITIONS (IWP-3110, 3111 and 3112)

Proc No EM-09-04 Revision 11 Page 3 of 5 The reference values for pump operating parameters are determined from the initial inservice test performed when the pump is known to be operating acceptably. It is permissible to have more than one set of reference values to allow the test to be run under different plant conditions or equipment operating modes.

These additional sets of reference values shall be determined in accordance with Paragraph IWP-3112 and documented in the record of.tests.

As specified in Step 5.1.4, when a reference value or set of values may have been affected by repair or routine servicing of the pump, a new reference value or set of values shall be determined or the previous value reconfirmed by an inservice test run prior to, or within 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> after return of the pump to normal service.

Deviations between the previous and new set of reference values shall be identified, and verification that the new values represent acceptable pump operation shall be performed via Step 5.3.5 or equal *.

In general, this is accomplished by making the Technical Specifications test a retest requirement on the work order used to take the pump out of service.

DATA EVALUATION (IWP-3220)

The initial evaluation of test data and determination of pump opera-bility is conducted by the operator who performed the test and is reviewed by the Shift Supervisor.

This review meets the 96 hour0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> requirement of IWP-3220 as data obtained is being compared to acceptance criteria based upon IWP-3100-2 (Attachment 2).

A followup evaluation is performed by the ISI Engineer or his desig-

. nate to monitor trends in pump hydraulic performance (pump d/p and flow for given suction pressure and speed) and mechanical performance (vibration, bearing temperature).

In addition, when the test results are used as new reference values such as after maintenance or for a new system configuration, the ISI Engineer evaluation must verify that the new values represent acceptable pump performance.

I~ the l~tter case, a revision to the record of tests may be required.

Following graphing and data evaluation, the ISI Engineer notes any abnormal conditions under remarks, signs the completed test, and

__ ______ _ ____ f_o_rwards.the. test.to-the -System---Engineer*-for* identi:ficat-iori-and ____ - ----

completion of necessary corrective action.

em0485-0020a-93-91

5.3.2 5.3.3 5.3.4 PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS Proc No EM-09-04 Revision 11 Page 4 of 5 The allowable ranges for the pump oper.ating parameters are defined in. If these ranges cannot be met, reduced range limits shall be specified* in the basis document for the affected test and these limits shall be used in lieu of those given in Attachment 2.

These limits shall also be specified in the pump test procedure. If any measured parameter falls outside the acceptable range, the evalu-ator shall initiate corrective action per Step 5.4 below.

Where available, the data sheets require that motor currents and voltages be recorded as an additional aid for pump performance evalu-ation. Although this information is not required by Code, the ISI Engineer should consider using this information and/or obtaining similar data from other pumps using a clamp on ammeter when necessary to evaluate a change in pump operating parameters.

If trends can be detected in pump parameters, the reviewers should attempt to predict when the parameter will enter the alert or required*

action ranges.

This prediction should then be used to schedule neces~

sary maintenance during a convenient outage when practical..

~-

.*4"-.

5.3.5 Through the performance of the review, new reference values and.

acceptance criteria may be required, as identified in Step 5.3.2.

This change may be accomplished per reference 3.6. The establishmen~

of new reference values shall be documented via Engipeering Analysis.,

per Reference 3.7.

5.4 NONCONFORMANCES 5.4.1 Any variation of a measured parameter falling within the specified required action range shall be documented on a corrective action document for identification and evaluation.

5.4.2 If a measured parameter falls within the specified required action range, the pump shall be considered inoperable and identified to prevent its use, except in an emergency, until the condition has been dispositioned. It should be noted that this may require the submittal

.of an event report rather than a deviation report, and NRC notifica-tion. The corrective action is not considered complete until a successful inservice test is completed following repairs and the new operating parameters evaluated. Evaluation shall generally be via Reference 3.7.

5.4.3 It should also be noted that the disposition may also include accept-ing the pump performance as-is as long as an analysis shows the pump is operating acceptably and is capable of performing its design function.

Analysis shall generally be via Reference 3.7.

em0485-0020a-93-91

5.5 5.5.l 5.5.2 5.5.3 5.5.4 RECORDS PALISADES NUCLEAR PLANT ENGINEERING MANUAL PROCEDURE TITLE:

INSERVICE TESTING OF SELECTED SAFETY-RELATED PUMPS Proc No EM-09-04 Revision 11 Page 5 of 5 The results of the quarterly inservice tests for each pump shall be recorded on graphs in a format adequate to identify trends in pump performance.

Parameters to be recorded in the pump record include, as available (Where possible actual measured values are always preferred to calculated values.):

a.

Pump differential pressure as calculated by the evaluator (mea-sured discharge pressure minus calculated or measured suction pressure), or as directly measured.

b.

Pump flow.

c.

Pump vibration.

d.

Motor current.

e.

Entries referencing significant maintenance actions or other pertinent comments.

After transferring the required data to the graphs, the completed working copies of the procedures shall be routed as indicated on each procedure and filed in the completed Tech Spec surveillance procedure file.

At the end of each year, the !SI Engineer shall assemble the graphs and any other pertinent information, and file them under the same Administrative UFI index number 22*21*8 with the same retention period as the completed Tech Spec surveillance procedures.

When the required action limits for pump parameters change, the ISI Engineer must ensure that the specified test procedure limits are also changed to appropriate new values.

Since the first level Shift Supervisor review provides immediate verification of pump operability, these limits shall be kept current.

em0485-0020a-93-91

P7A, B, P8A, B, P52A, B, P54A, B, P55A, B, P56A, B, P66A, B, P67A, B, Proc No EM-09-04.

Revision 11 Page 1 of 1 TABLE 1 Selected Safety Related Pumps ASME Tech Spec 1 Pump Class Surv Proc c, Service Water Pumps 3

M0-16 (Q0-14) c, Auxiliary Feedwater Pumps 3

M0-38 (Q0-21) c, Component Cooling Pumps 3

M0-18 (Q0-15) c, Containment Spray Pumps 2

M0-19 (Q0-16) c, Charging Pumps 2

M0-20 (Q0-17)

Boric Acid Pumps 2

M0-21 (Q0-18)

HP Safety Injection Pumps 2

M0-22 (Q0-19)

LP Safety Injection Pumps 2

M0-23 (Q0-20}

Based on ASME B&PV Section XI, 1983 edition.

Includes those pumps important to reactor safety which transfer automatically and restart on an emergency power supply under accident conditions~

1 Monthly Operations Technical Specifications Surveillance Procedures are being transfered to a quarterly test interval

  • em0485-0020b-93-91

Test Qty" Pi AP AP Q

Q

1.
2.

Centrifugal Pump Positive Displacement Pumps Centrifugal Pumps1 Positive Displace~ent and Vertical Line Shaft Pumps When 0 ~ Vr ~ 0.5'.mil When 0.5 mil < Vr ',~ 2.0 mil When 2.0 mil < Vrl< 5.0 mil When Vr > 5~0 mil' I

i in pump records.

I in pump records.

TABLE 2 Allowable Ranges Of Test Quantitiess Alert Range Acceptable Range Low Values*

High Values 1

1

.90 to 1.10 APr

.93 to 1.10 APr

.90 to 1.10 Qr

.95 to 1.10 Qr

.93 to <.95 Qr 0 to l mil None 1 to 1.5 mil 0 to 2 Vr mil None 2 Vr mil to 3 Vr mil 0 to (2 + Yr) mil None (2 + Vr) mil to (4 + Vr) 0 to 1.4 Vr mil None 1.4 Vr mil to 1.8 Vr mil 2

z z

l.

As specified As specified Vr, Pr, etc, Definitions:

are reference values (specified on pump graphs).

4.

Pi - Pump inlet pressure AP - Pump differential pressure Q - Pump flow rate V - Vibration amplit~de Tb - Bearing temperature I

. ' i I

em0485-0020c-93-91 Proc *~0~041 Revision 11 Page 1 of 1 Required Action Range Low Values ' High Values 1

<.90 APr

<.93 APr

<.90 Qr

<.93 Qr None None mil None Hone 2

1

>l.10 APr

.>l.10 APr

>l.03 Qr

>1.10 'Qr

>1.5 mil

>3 Vr mil

>(4 + Vr) mil

>1.8 Vr mil 2

(Table IWP-3100-2)

EQUIPMENT:'.

INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI.

Service Water Pumps **P-7A, **P-78 and **P-7C Proc No EM-09-04 Revision 11 Page l of 13 FUNCTION:

Supply lake water to critical and noncritical loads during

  • various Plant conditions.

ASME SECT XI:

3 CODE CLASS REQUIREMENT:

ASME Section XI, 1983 Edition, Subsection !WP requires both pump differential pressure and flowrate to be measured, with acceptance criteria based on Table IWP-3100-2.

RELIEF BASIS:

Installed instrumentation is not available to measure individual pump flowrate.

However, the flow requirement fo~ service water during normal Plant) operation, per the FSAR, is almost identical to the flow required following an MHA (14,275 gpm vs 14,330 gpm).

Therefore, the ability of the.service water

~

pumps to handle cooling requirements during normal operation is, in itself, ;.t' continuous confirmation of the ability of the system to handle the peak heat"*~t load following.an MHA.

Additionally, the piping system is not built to tesij' the pumps individually (when the plant is on line or when decay heat is high}';.

such that the differential pressure measurements must be taken on. the two pumps in service. Relief is requested from Subsection !WP to test **P-7A,

    • P-78 and **P-7C within the existing equipment/system limitations.

ALTERNATE TESTING:

Perform inservice pump testing to monitor pump differential pressure, motor current, lake temperature and vibration.

Since the system heat loads during normal Plant operation are essentially constant, pump flows and the resulting discharge pressures can be considered as functions of Lake Michigan water temperature.

On this basis, a graph of expected pump discharge pressures vs lake temperature was developed, and this graph, in turn, has been used as the basis for the pump discharge pressure acceptance criteria as allowed by Article IWP-3210 of the Code.

Table IWP-3100-2 guidelines for alert and required action ranges have been expanded; past test data has shown the available method of testing is not repeatable within the Table guidelines.

Those values shall be expanded to no greater than:

Alert Range Acceptable Range Low Value High Value Required Action Range Low Value High Value

---~

0.85 to < 0.88 ~PR > 1.10 to 1.11 ~PR <0.85 ~PR

>l.11 ~Pa To supplement the inservice testing the internals of one pump shall be inspected every 3-1/3 years, such that all three pumps are inspected each 10 year interval, to correspond to the 10 year IS! schedule.

em0485-0020d-93-91

INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI EQUIPMENT: > -_-

Auxiliary* Feedwater Pumps **P-8A, **P-88 and **P-8C Proc No ~H-09~04 Revision 11 Page 2 of 13 FUCTION:

ASHE SECTION* XI: 3 CODE CLASS REQUIREMENT:

ASHE Section XI, 1983 edition requires the measurement of both pump differential pressure and flow rate at each inservice test interval.

RELIEF BASIS:

The Auxiliary Feedpumps do not have installed differential pressure gauges.

Differential pressure is.determined by recording discharge pressure and subtracting a calculated static inlet pressure.

The Auxiliary Feedwater system does not have pump recirculation flow indication and it does not have pump discharge flow indication which meets the accuracy requirements of ASHE Section XI, Table IWP-4110-1.

ALTERNATE TESTING:

Inservice testing shall be conducted by trending a calculated pressure versus a fixed resistance recirculation flow. -

em0485-0020d-93-91

)

INSERVICE TESTING OF PUMPg Requests for Exemptions to Section XI Proc No EM-09-04 Revision 11

  • Page 3 of 13 EQUI PHEHT :'

FUNCTION:.

Component Cooling Water* Pump~ **P-52A, **P-528 and **P-52C.

Pump water in the component cooling water system to transfer heat from radioactive or potentially radioactive systems to the service water system.

ASHE SECT XI:

3 CODE CLASS REQUIREMENT:

ASHE Section XI, 1983 Edition, Subsection IWP requires differential pressure and flowrate to be mea.sured during inservice pump testing.

RELIEF BASIS:

Installed instrumentation is not available to measure differential pressure, pump or system flowrate.

Pump differential pressure is determined by measuring discharge pressure and subtracting a calculated static inlet pressure.

Previous code editions allowed the use of either flow or differential pressure for pumps in fixed resistance systems. The Component. i.

Cooling Water System i.s a closed loop fixed resistance system, so either flollf" or calculated differential pressure would be responsive to pump hydraulic performance.

Relief is requested from the IWP-3100 requirement to measure pump flowrate and differential pressure.

ALTERNATE TESTING:

Pump calculated differential pressure and vibration shall be taken at each test interval.

To aid in pump monitoring motor current shall be taken

  • em0485-0020d-93-91

EQUIPMENT:

FUNCTION:

REQUIREMENT:

INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI Containment Spray Pumps **P-54A, **P-548 and **P-54C.

Proc No EM-09-04 Revision 11 Page 4 of 13 To provide containment pressure control after a MSLIB or LOCA inside containment.

ASME Section XI, Subsection IWP 1983 requires the measurement of both pump differential pressure and discharge flowrate within a 2% accuracy.

RELIEF BASIS:

The Containment Spray Pumps do not have installed differential pressure gauges.

Differential pressure is determined by measuring discharge pressure and subtracting a calculated static inlet pressure. Additionally the instrument loop of **FI-0404A does not meet the accuracy requirements of Table IWP-4110-1.

ALTERNATE TESTING:

Inservice testing shall be performed by determining a calculated differential pressure and comparing this pressure to a measured flow within the accuracy capability of installed instrumentation.

  • ~

em0485-0020d-93-91

INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI EQUIPMEllTt- * --

  • _ Charging Pumps **P-55A, **P-558 and **P-55C Proc No EM-09-04 Revision 11 Page 5 of 13 FUNCTION:

Provide* high pressure* water to the PCS for normal makeup, chemical and boric acid concentration control, and a path for concentration control, and a path for concentrated boric acid addition to the PCS.

ASHE SECT XI:

2 CODE CLASS REQUIREMENTS:

ASHE Sect XI, 1983 Edition, Subsection IWP requires both differential pressure and flowrate to be measured during inservice pump testing.

Bearing temperatures are required to be observed annually.

RELIEF BASIS:

The charging pumps are low capacity high pressure positive displacement pumps.

By design, a positive displacement pump will provide a specific volume of water regardless of the differential pressure, to the design discharge pressure of the pump.

Monitoring flowrate is an adequate and appropriate*

  • ,'Qi:'

measure of the pumps hydraulic health.

The pump configuration will not allo~

any type of bearing temperature measurement; the-pump bearings are physicall~

located in the pump base. Relief is requested from the IWP-3100 requirement-.

to measure pump differential pressure and bearing temperatures.

ALTERNATE TESTING:

Perform inservice testing on **P-55A, **P-55B and **P-55C, monitoring pump flowrate and vibration.

Speed shall be measured on **P-55A, (since it is a variable speed driver).

~-- ----

---~-------- -

-~---- -

em0485-0020d-93-91

t
  • (,.

INSERVICE TESTING OF PUMPS.

Requests for Exemptions to Section XI Proc No EM-09-04 Revision 11 Page 6 of 13 EQUIPMENT:

High Pressure Safety Injection Pumps, **P-66A and **P-668.

FUNCTION:

To provide high pressure borated water into the PCS during emergency conditions.

ASHE SECTION XI: 2 CODE CLASS REQUIREMENT:

ASHE Section XI, Subsection !WP 1983 requires both pump differential pressure and flow rate be measured within a +/- 2% accuracy at each test interval.

RELIEF BASIS:

The HPSI Pumps do not have installed differential pressure gauges.

Differential pressure is determined by measuring pump discharge pressure and subtracting a calculated static inlet pressure. Additionally, the instrument loops of **FI-0316A and **FI-0317A do not meet the accuracy requirements of Table IWP-4110-1.

ALTERNATE TESTING:

Inservice testing shall be performed by determining a pressure to a measured flow within the accuracy capability of installed instrumentation.

em0485-0020d-93-91

4 INSERVICE TESTIN~ OF PUMPS"; *:

Requests. for Exemptions to Section. XI EQUIPMM:*';":~;-"~, Boric Acicf Makeup Pumps*~ **P-56A and **P-568 Proc No EM-09-04 Attachment J Revision ll Page 7 of.13 FUNCTION:*

supply* concentrated* Boric
Acid to. the makeup subsystem of the
      • volwiie control tank, to the charging pump-suction header, and to the Safety Injection Refueling Water Tank.

ASME SECT XI:

2 CODE CLASS REQUIRMENT:

ASME Section XI, 1983.Edition, Subsection IWP requires both differential pressure and flowrate to be measured during inservice pump testing.

RELIEF BASIS:

The test circuit used has no installed instrumentation. Use of the available*

flow instrumentation would allow highly concentrated boric acid to enter the Volume Control Tank and charging pump suction, allowing a. reactor power excursion.

The present method of testing the PWlll> isolates downstreant flow

r.

and provides a fixed resistance recirculation path to the Boric Acid Storage :'~t:~,;.~.

Tanks.

Pump differential pressure is determined by measuring.discharge

  • ~~~:;,~:*:

pressure and subtracting a calculated static inlet pressure.

Previous code VK::'.

editions allowed the use of either flow or differential pressure for pumps ii'.it._:*

  • fixed resistance systems. Relief is requested from the IWP-llOQ requirement to measure **P-56A and **P-56B flowrate and differential pressure *. -

ALTERNATE TESTING:

Perform inservice pump testing on **P-56A and **P-56B monitoring pump calculated differential pressure and vibration, with a fixed resistance repeatable flow path established.

~-

em0485-0020d-93-91

.) i' INSERVICE TESTING OF PUMP~

Requests for Exemptions to Section XI Proc No EM-09-04

  • Revision ll Page 8 of 13 EQUIPMENT:

FUNCTION:

Low Pressure Safety Injection Pumps, **P-67A and **P-678.

To provide low pressure borated water to the PCS during emergency conditions:

ASHE SECTION XI: 2 CODE CLASS REQUIREMENT:

ASHE SECTION XI, Subsection IWP, 1983 requires the measurement of both pump differential pressure and discharge flowrate within a +/- 2% accuracy at each test interval.

RELIEF BASIS:

The LPSI Pumps do not have installed differential pressure gauges.

Differential pressure is determined by measuring discharge pressure and subtracting a calculated static inlet pressure. Additionally, the instrument loop of **FI-0404A does not meet the accuracy requirement of Table IWP-4110-111:,-

ALTERNATE TESTING:

i:**

-i~

.:'If.

Inservice testing shall be performed by determining a calculated differentialq:';,_

pressure and comparing this pressure to a measured flow within the accuracy capability of installed instrumentation.

em0485-0020d-93-9l

i' INSERVICE TESTING OF PUMPS Requests for Exemption1 to Section XI Proc No EM-09-04 Revision ll Page 9 of 13 EQUIP~***~*~; **FI-0212 Flow Indicator, used for Charging Pump Flow Rate

.*. <' Mea1urement.

FUNCTION:

=--This* indicator measures the Charging Pump flow rate to the Primary Coolant system during normal operation and test conditions.

ASME SECTION XI: 2 CODE CLASS REQUIREMENT:

ASHE SECTION-XI, 198~ Edition, Part IWP-4120 requires an indicated range of three times the reference value or less.

BASIS FOR RELIEF:

    • FI-0212 does not meet the indicated range requirements of the Code.

However, past test data has shown it is capable of repeatability-for inservice.'.

pump testing. Relief is requested from the IWP-4120 range requirement.

ALTERNATE TESTING:

Continue the use of **FI-0212 with its present indicated range.

em0485-0020d-93-9l

EQUIPMENT:

FUNCTION:

ASME SECT XI:

CODE CLASS

.REQUIREMENT:

INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI Proc No-EM-09~04 Revision 11 Page 10 of 13

    • FI-0404A Flow Indicator, used for LPSI and Containment Spray Pump Test Flowrates Recirculation to Safety Injection Refueling Water Tank Flow Indicator, used to measure flowrate for testing Containment Spray and Low Pressure Safety Injection Pumps.

2 ASME Section XI,.1983 Edition,' Table IWP-4110-1 requires the measurement of flowrates to be measured within +/-2%.

BASIS FOR RELIEF:

    • FI-0404 is not capable of measurement within +/-2% as required by ASME Sect XI.

Past test data has shown that it is still capable of repeatability suitable for inservice pump testing. Relief is requested for the IWP-4100 requirement accuracy for **FI-0404A.

ALTERNATE TESTING:

Continue the use of **FI-0404A, within its available instrument accuracy.

em0485-0020d-93-91

_p:.~~*.*~~~-,

9fft;'~..
-:.J ".

INSERVIC! TESTING OF PUMPS Requests for Exemptions to Section XI Proc No EM-09-04 Revision 11 Page 11 of 13 ASME SECT XI:

2 or 3 as applicable CODE CLASS REQUIREMENT:

ASHE Section XI, 1983 Edition Tables IWP-3100-1 and IWP-3100-2 require pump inlet pressure to be measured prior to start of the pump, (static pressure). in addition to the dynamic pressure which is used for pump differential pressure calculations.

BASIS FOR RELIEF:

no installed inlet pressure gauges on the tested pumps.

Palisades has Consequently, flow losses..

tank volumes conditions.

inlet pressures are based on inlet line* and tank. elevations and In all cases, the flow losses are small enough to be ignored and are large enough to-discount changes between static and dynamic

-~

ALTERNATE TESTING:

~\\;~/.

Palisades will perform inlet pressure calculations with no plant specified limits applied.

This number will be applied to determine the pump differen-tial pressures

  • em0485-0020d-93-91

Proc No EM-09-04 INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI

  • Revision 11 Page 12 of 13 EQUIPMEBT:

Pump Discharge Flow Measurement (Q).

FUNCTIOH:

To determine the pump delivered flow rate for pumps equipped with flow indication.

ASME SECTION XI: 2 or 3 (as applicable)

CODE CLASS REQUIREMENT:

ASME Section XI, 1983 Edition, Table IWP-4110~1 require pump flow (Q) to be measured within an accuracy of +/-2% full scale. Table*IWP-3100-2 requires the upper acceptable range limit for flow to be no greater than 1.02 times the reference value.

BASIS FOR RELIEF:

Because of the restricitive upper limit for flow, it is possible for acceptable variations of instrument accuracy to place a pump into the alert range.. Assume a Q reference value of 300 gpm as read on a 0-450 gpm gauge with 10 gpm graduations.

The following inaccuracies are assumed:

6 gpm - for 2% instrument loop error 5 psi - equal to l/2 a graduation for reading error The total error by the root of the sum of the squares methods is:

I 6z + 52 = 7.8 gpm This error when added to the actual flow of 300 gpm equals 308 gpm.

This reading exceeds the upper acceptable range limit of 306 gpm.

ALTERNATE TESTING:

Palisades will use the range limits proposed by ANSI/ASME om-6, Table 6100-l for flow:

Acceptable Range 0.90-1.10 QR CENTRIFUGAL PUMPS Alert Range Low Value High Value Required Action Range Low Value High Value

<0.90 QR

>l.10 QR Positive Displacement and Vertical Line Shaft Pumps Acceptable Range 0.95-1.10 QR em0485-0020d-93-9l Alert Range Low Value 0.93 to <0.95 QR Required Action Range High Value Low Value High Value

<0.93 QR

>l.10 QR

. - -""J

...<!i::;f Proc No= BM-09-04'

, '.1

"- :,,i*

  • ,**.=--

INSERVICE TESTING OF PUMPS Requests for Exemptions to Section XI Revision 11 Page 13 of 13

- ~~

EQUIP Pressure Gauges

... ~:.

Determine the_Pump* Listed in Attachment ASME SECTION*XI: 2 or 3 (as applicable}

CODE CLASS-REQUIREKEHT:

ASHE Section XI, 1983 Edition, Table IWP-4110-1 requires discharge pressure to be measured within an accuracy range of +/-2% full scale.

Table IWP-3100-2 requires the upper acceptable range limit for differential pressure to be no greater than l.02 times the differential pressure reference value.

BASIS FOi RELIEF:

The differential pressure accuracy is directly affected by the accuracy of the

  • ~

discharge pressure reading.

Because of the restricitve upper limit for differential pressure, it is possible for acceptable variations in instrumen accuracy to place a pump unit into the alert range *. Assume a differential.-

pressure reference value of 300 psid as read on a 0-450 psig gauge with 10

-~";c ::~~~:~ ~f ~

graduations.

The following errors are assumed:

6 psi for 2% instrument loop errors 5 psi reading error (equal to one half a graduation)

The total error by the root of the sum of the squares method is:

I 6 2 + s 2 = 1.a psi This error when added to the actual differential pressure of 300 psid equals 306 paid. This reading equals the upper acceptable range limit of 306 psid.

ALTERNATE TESTING:

  • Palisades will use the range limits proposed by ANSI/ASME OM-6, Table 6100-1 for-diff~ren~ial pressure. _

~-:** *.:~lt::~:):.. ---l

'.' ::~2;';~;@,~

Aler::::UGAL PUMPS Acceptable* Range

  • Low Value High Value Required Action Range Low Value High Value 0.90-1.10 APR

<0.90 apa

>1.10 APR-Positive Displacement and Vertical Line Shaft Pumps Acceptable Range 0.93-1.10 APR em0485-0020d-93-9l Alert Range Low Value High Value 0.90 to <0.95APR ------------

Required Action Range Low Value High Value

<0.90 aea

>1.10 aPa

~i~::i~

    • ~* ;
Retrieved from "https://kanterella.com/w/index.php?title=ML18052B403&oldid=5022376"