ML20198G898

Rev 5 to MP 720.11, Overhaul of Fuel Pool Cooling Pumps

ML20198G898
Person / Time
Site:	Millstone
Issue date:	01/07/1998
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
References
MP-720.11, NUDOCS 9801130145
Download: ML20198G898 (63)

Text

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• NDS Document Transmittal.#29481 1fu98 To:

Nuclear Regulatory Commiselon Addressee Unques 140 Docureont Control Desk ROUTINE detributen Weehington, D.C. 20666 The foilowing documents have been revised. You are currently on distribution for these documents. Verify that all documents are included in this distribution set.

DOCUMENT REY COPIES MP 720.11 5

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Retum the form to NDS, MP475,3rd Floor. C/O Rck Lundin (x2446) as soon as received.

Signature Date:

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O MILLSTONE NUCLEAR POWER STATION

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MAINTENANCE PROCEDURE Overhaul of Fuel Pool Cooling Pumps MP 720.11 Rev.5 j

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Effective Date:

m 4.J Level of Use SME: J. Newman General

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. Millstone Unit l'.

C.

L Maintenance Procedure

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Overhaul of Fuel Pool Cooling Pumps t

, 7ABLE OF CONTEN_TS 3

1..

PURPOSE.....................................................-2.

2.

P R E R EQ U I S ITES..............................................

2.

- 3.

' P R ECAUTI O N S............................................... ' 9 4.

I NSTR U CTI ON S............................................... 10 -

4.1 Pump Disassembly........................................ - 10 4.2 Pump Cleaning and Inspection.............................. -18 4 4.3 -

P u m p Re p ai r............................................

22 -

- 4.4 Pu mp Asse mbly.........................................

24 4.5 Operational Checkout.....................................

43 4.6 Mechanical Seal Replacement..............................

43 l..

5.

- R EVIEW AN D SIGN-O FF....................................

48

.n,

,a b

6.

R E FE R EN C ES...............................................

4 8 7.

S UM M ARY O F CI I ANG ES....................................

49 ATTACIIMENTS AND FORMS, " Pump Cross-Section View"........................ 51.," Pump Exploded View"............................

55," Casing Flange Gasket Fabrication DeMils"...........

56

- Attachment 4, " Upper Casing Bolt Tightening Sequence"............ 157, " Inspection Data Record"...........................

58 -

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Level of Use:

STOP -

- THINK '

'ACT~

REVIEW

- Rev. 5 L

eneral l of 61

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1. JURPOSE 7

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l.1 Objective The objective of this procedure is to provide instructions for overhauling the fuel pool cooling pumps.

1.2 Discussion This procedure provides guidance for overhauling the fuel pool cooling pumps. Each of these pumps is a 4 X 11SC hc,rizontal, split-case, centrifugal pump manufactured by the Ingersoll-Rand Pump Co.

The overhaul instructions provided in Sections 4.1 through 4.5 cover pump removal, disassembly, cleaning, insp,:ction, repair, assembly, and operational checkout. The instructions provided in Section 4.6 cover mechanical seal replacement independent of a pump overhaul.

1.3 Responsibilities 1.3.1 If necessary, Condition Based Maintenance Department is responsible for balancing impeller and shaft

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1,4 Applicability

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This procedure applies to the following local ids:

M4-11 A(PMP), "1 A Fuel Pool Cooling Pump-Pump" a

M4-11B(PMP), "1B Fuel Pool Cooling Pump-Pump"

2. PREREOUISITES 2.1 General 2.1.1 This pump falls within the ASME Section XI boundary. Planned repair or replacement of pressure-retaining components has been evaluated in accordance with WC 3,"ASME Section XI Repair and Replacement Program."

2.2 Documents 2.2.1 C MP 710A,"Ilorizontal Shaft Alignment" 2.2.2 MP 791.0 (Att), " Fuel Pool Cooling (310)"

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Level of Use STOP

'ilNK ACT-REVIEW General 2 oI61

i Ic 7

2.2.3 WC 10 (Ait)," Lifted Lead and Temporary Modification Data

-l Sheet" 2.3 Measuring an' d Test Equipment (M&TE) 2.3.1

. All M&TE has bien calibrated in accordance with WC 8,

- Control and Calibration of Measuring and lbst Equipment" and the calibration is current.

- 2.3.2.- QA torque wrenches (click or dial type) with a minimum accuracy and maximum torque wrench full scale value listed in the table 1

below for the specified torque application range.

Specified1brque M'aximum lbrque Wrench Minimum Application Range Full-Scale Value Accuracy 114 to 126 ftelbs

. Between 150 and 600 ftelbs 5%

2.3.3 Dial indicator with a 0 to 0.200 inch travel and minimum accur scy of 1 graduation in 2% revolutions, such as OA-1504 (four required)

-2.3.4 Dial indicator with a 0 to 1 inch travel and minimum accuracy of 1 graduation in 2% revolutions, such as OA-1691 O

V 2.3.5 Inside micrometer with a range of 2 to 3 inches and an accuracy -

of 0.001 inch, such as MPS-49 2.3.6 Inside micrometer $vith a range of 3 to 4 inches and an accuracy of 0.001 inch, su h as MPS-50 2.3.7 Inside micrometer with a range of 5 to 6 inches and an accurag os 0.001 inch, such as M. S-52 2.3.8 Outside micrometer with a ra 'ge of 0 to 1 inch and an accuracy of 0.001 inch, such as OA-1568 2.3.9 Outside micrometer with a range (J 1 to 2 inches and an accuracy of 0.001 inch, soch'as OA-1569 V

2.3.10 Outside micrometer w;th a range of 2 to 3 inches and an accuracy of & 0.001 inch, such as MPS-42 2.3.11 Outside micrometer with a range of 5 to 6 inches and an accuracy of 0.001 inch, such as MPS-44 '

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~j' Level of Use.

STOP THINK ACT.~

' REVIEW Re General 3 j.

61 m

2.3.12 Thermocouple thermometer capable of measuring up to 400*F g

with an accuracy of l'F, such as QA-1703 2.4 Tools and Consumables 2.4.1 7bols (As Needed)

Abrasive stone (s)

{v Allen wrenches Cold chisel Coupling puller Crescent wrenches Drill Drill bit, No. 7 Feeler gage t

Files Grease gun impact Wrench a

Level

=

hiachinist's scalc

=

Mallet Mechanic's set of combination wrenches Mechanic's standard iool kit Pipe wrenches Razor knife Ruler O

Level of Use sToP THINK ACT REVIEW General 4 }-[1 R

Scraper

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'l Set of Allen wrenches Sharp knife (for cutting gasket material)

Sledgehammer (2 lbs)

Small grinder Snap gage Snap ring pliers Socket set with ratchets and breaker bar Spanner wrench Strap wrench Tap,1/4-inch UNC Wire brush

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Level of Use STOP THINK ACT REVIEW Rew 5 General S of 61 l

2.4.2 Equipment (As Needed) i Bearing puller or arbor press Chain fall,1/2-ton capacity minimum Dial indicator alignment fixture Eyebolts,7/16 nch (two required) i Ilydraulic press Induction bearing heater Paint buckets (1-gallon capacity)

Receptacle for draining bearing housing oil (1-quart capacity minimum)

Rope (approximately 40 feet,1/2-inch diameter)

Slings,1-inch diameter minimum, one at 4 feet, two at 2 feet Shackles,3/8 nch,(two required)

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c Stands (horses) and planks Torch with rosebud (two required)

Tube light V-blocks or lathe 1

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Mi-720.11

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Levelof Use STOP THINK ACT REVIEW Rev. 5 General-6 of 61

2.4.3 Spare Parts (As Needed)

D.aring end cover gasket (2 required)

Case wear ring (2 required)

Casing gasket Coupling key Coupling gasket Impeller Impeller key Impeller setscrew (6 required) 1mpeller wear ring (2 required)

Mechanical seal assembly (2 required)

Radial bearing

'u l Radial bearing housing Seal ring (2 required)

Shaft Shaft sleeve (2 required)

Shaft sleeve nut (2 required)

Shaft sleeve O-ring (2 required)

Thrust bearing Thrust bearing housing i

Level of Use srOP THINK ACT REVIEW Rs. 5 General 7 of 61

T 2.4.4 Consumables (As Needed)

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Approved anti-seize compound such as nuclear-grade

+

Never-Seez Approved cleaning solvent such as Polywater Hydrafoam 2020 All Purpose Cleaner Approved gasket adhesive such as aviation-grade Perma:ex Approved shaft sleeve 0-ring lubricant such as Versilube Approved lubricant for mechanical seal bellows and seat ring such as Versilube Approved cleaning solvent for mechanical seal seat and washer such as denatured alcohol i

Approved thread sealant v:ch as PRI 10lN

+

Pump lubricant

+

Coupling lubricant a

,C)

Cribbing Emeiy cloth (coarse and medium)

Fine-grit abrasive Gasket sheet material,1/64 nch (casing gasket) i llerculite Low-lint cloths Scotch Brite pads Tape 2.5 Definitions 2.5.1 DE-MAGNETIZE-To deprive of magnetic properties 2.5.2 Radial end-Inboard end (coupling end)

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Level of Use STOP THINK ACT REVIEW Re General g

1

7 e

e 2.5.3 Thrust end-Outboard end (opposite coupling end)

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TIR-lbtal indicator runout

3. PRECAlfrIONS 3.1 Prior to disas:cmbly, match mark components as necessary to aid in reassembly. Do not match mark delicate parts or critical mating surfaces.

3.2 Ensure all chemical consumables to be used in or on power plant components are controlled in accordance with CC 1," Control of Chemical Consumable Products," and that a Restricted Use Permit has been issued as necessary.

3.1 Ensure all combustible materials, flammable liquids, compressed gasses, and ignition sources are used in accordance with WC 7," Fire Protection Program."

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Level of Use STOP THINK ACT REVIEW Rev.5 Generai 9 of 61

4. JESTRUCTIONS i

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4.1 Pump Disassembly 4.1.1 DISCONNECT the following:

Seal water piping Upper casing vent piping 4.1.2 Refer D Attachment 1, and REMOVE fasteners securing gla.id plates (S-14) to casing.

4.1.3 SLIDE gland plates away from casing as far as possible.

4.1.4 UNCOUPLE pump and motor as follows:

a.

REMOVE coupling guard, b.

MATCll MARK the following components:

Pump coupling hub Coupling covers J;

v' Motor coupling hub c.

REMOVE fasteners securing coupling cover halves, d.

REMOVE grid, c.

REMOVE coupling gasket.

4.1.5 REQUEST dual verification, and MEASURE as-found coupling hub separation dimension as follows:

a.

MEASURE minimum coupling gap.

- b.

PUSil motor shaft outboard and MEASURE maximum coupling gap.

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Level of Use STOP THINK ACT REVIEW Rev. 5 Ge'neral 10 of 61

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-NOTE:

A.

One half of the difference between the minimum and maximum coupling hub gap measurements is the as-found coupling hub separation -

dimension, c.

CALCULATE as-found coupling hub separation dimension.

d.

RECORD as-found coupling hub separation dimension onto.

-NOTE The instructions for draining the thrust bearing housing are the same as those for draining the radial bearing housing.

'4.1.6 DRAIN bearing housings as follows:

POSITION suitable receptacle beneath thrust bearing a.

housing.

O b.

REMOVE plug from bottom of bearing oiler, and DRAIN oil V

mto receptacle.

NOTE The rotating assembly can be removed from the pump without moving the motor.

4.1.7 IE motor must be moved in order to gain access to pump components, MOVE motor as follows:

a.

MARK motor leadwires.

b.

DISCONNECT motor leadwires.

c.

RECORD lifted leads onto WC 10 (Att)," Lifted Lead and Temporary Modification Data Sheet."

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Level of Use -

sToP THINK ACT' REVIEW R v.5

General 11 of 61

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D)

NOTE

'u.

Motor weighs approximately 460 lbs.

d. -DISCONNECI' any con'duit that could interfere with movement of motor.

c.

RIG motor as necessary to permit motor to be turned, f.

REMOVE motor hold-down fasteners.

g.

LIFI' motor and ROTATE motor as necessary.

h.

IE applicable, REMOVE and LABEL motor shims.

i.

PLACE motar support blocks beneath motor.

J.

LOWER motor onto support blocks.

4.1.8 REMOVE upper casing as follows:

AV NOTE Upper casing weighs approximately 80 lbs, REMOVE fasteners securing upper casing to lower casing, a.

b.

REMOVE casing dowels.

c.

INSTALL, but do not tighten, jacking bolts into lower casing.

d.- Evenly TIGIITEN jacking bolts, and JACK upper casing

. fro'm lower casing.

e.

IE necessary, RIG upper casing.

f. ' LIFI' upper casing as straight as possible, and MOVE it to a L4 suitable work area.

4.1.9 REMOVE rotating assembly as follows:

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- Level of Use-STOP

~ THINK ACT

- REVIEW Ren 5 General-12 0f 61

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a ; REMOVE thrust bearing oiler.:

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REMOVE two thrust bearifig housing' dowels.

i c.

REMOVE fasteners securing thrust bearing housing to case -

4 bottom half.

d.

REMOVE radial bearing oiler.

e.

REMOVE two radial bearing housing dowels.

f. _ REMOVE fasteners securing radial bearing housing to case '

bottom half.

NOTE Rotating assembly weighs approximately 105 lbs.

g. -IE necessary, RIG rotating assembly.

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1 h.

LIFT rotating assembly as straight as possible, and MOVE it q

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to a suitable work area.

A>

i.

COVER openings as nccessary to prevent foreign objects from entering system.

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REMOVE casing gasket (170).

4.1.10 DISASSEMBLE thrust-end components as follows:

a.

REMOVE fasteners securing thrust bearing end cover (160B) to thrust bearing housing (159).

b.

REMOVE thrust bearing end cover (1608),

c.

REMOVE thrust bearing end cover gasket (262).

d.

REMOVE thrust bearing snap ring (397).

e..Using bearing puller, REMOVE thrust bearing housing (159).

f.

REMOVE thrust bearing (204).

f~

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-Level of Use.

STOP

- THINK -

ACT REVIEW Ra 5 General

,61

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g.

REMOVE thrust bearing housing seal ring or bearing Isolator (308B) as applicable.

' NOTE Pumps equipped with a bearing isolator have no flinger.

h1 IE equipped, REMOVE flinger (157).-

1.

LOOSEN setscrews (S-13) securing collar (S-12) to shaft

sleeve, j.

REMOVE mechanical seai asembly (429) as a shgle unit.

k.

REMOVE setscrews securing shaft slee';; nut (127) to shaft.

1.

REMOVE shaft sleeve nut (127).

m. REMOVE shaft sleeve 0-ring (456).

n.

REMOVE shaft sleeve (8),

4.1.11 DISASSEMBLE radial-end componeats as follows:

a.

REMOVE pump coupling hub as follows:

1) MOUNT coupling puller onto pump coupling hub.

NOTE The coupling hub has an interference fit of approximately 0.001 to 0.003 inch. Coupling hub removal may require the application of locat.

2) TIGIITEN coupling puller until coupling hub offers

- moderate resistance.

. f, Level of Use -

STOP

. THINK ACT' AEVIEW 4 gf 61.

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'W A R N I N'Gi sTOP

'To prevent injury to personnel, all combustible' materiets, flammable liquids, compressed gasses, and ignition sources must be used in accordance with WC 7," Fire Protection Program." '

T C-A U T I O N Y Tb prevent damage to coupling hub during removal, heat must be applied crenly to coupling hub

3) _ Using a torch with a flame-spreading nozzle, evenly llEKr pump coupling hub and TIGIITEN coupling puller until coupling hub slides off shaft.

4) REMOVE coupling hub key (12).

5) REMOVE coupilag cover and seal.

O

b. - REMOVE fasteners securing radial bearing end cover (160A) to radial bearing housing (159).

c.

REMOVE rad!al bearing end cover (160A),

i d.

REMOVE radial bearing end cover seal ring or bearing isolator (308A) as applicable, c.

REMOVE radial bearing end cover gasket (262).

f.

Using bearing puller, REMOVE radial bearing

- housing (159).

g.

REMOVE radial bearing (205).

h.. REMOVE radial bearing housing seal ring or bearing isolator (308B) as applicable.

+

I' 1

Level of Use.

STOP

- THINK '

~ ACT-REVIEW R"$

'1 General; 5 fR

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a-,

,--,es

a

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NOTE

'l Pumps equipped with a bearing isolator have no flinger..

l

1. : IE equipped, REMOVE flinger.(157).

l iJ.

LOOSEN setscrews (S-13) securing collar (S-12) to shaft -

sleeve.

- k. - REMOVE m'echanical seal assembly (429) as a single unit.1 1.

REMOVE setscrews securing shaft sleeve nut (127) to shaft.

m. REMOVE shaft sleeve nut (127).

n.

REMOVE shaft sleeve O-ring (456).

o.

REMOVE shaft slecvc (8).

4.1.12 REMOVE casing wear rings (6).

O I-3 L

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Level of Use -

STOP-THINK =

'ACT*

REVIEW Rev.5 General 16 of 61

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.-.-,:=. =.

_.. _ ~ -.

?4.1-131 REMOVE impeller as follows:

NOTE-When measurir:: !he as-found dimension between inboard end of shaft and face of impeller hub, an accuracy of at least //32 nch is necessary, i

Refer 'Ib Figure - 1; and, using a machinist's scale,.

a.

MEASURE as-found dimension between inboard end of shaft and face ofimpeller hub. -

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Figure - 1. 'Ar-Found Impeller Position

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b.

RECORD measured dimension onto Attachment 5.

c.

M ATCII MARK impeller with respect to direction of rotation.

d.

REMOVE impeller setscrews.

NOTE

-A small amount of heat may be required to remove the impeller.

- c. - 1E necessary, using a thermocouple therinometer and heatin;; _

torch with rosebud,IIEAT impeller hub to 150 to 350*F, and REMOVE impeller from shaft.

n L

--Level of Use:

STOP THINK ACT

' REVIEW Rw. 5

- General 4

17 of 61

3 1

f.

REMOVE impeller key (11).

V NOTE:

- Lower casing removal is unlikely. Pum p maintenance is normally performen with the lower casing installed.-

t

-4.1.14 - IE lower casing remost is necessary, PERFORM the following:

a.

DISCONNECT suction and discharge piping.

b.

REMOVE fasteners securing lower casing to baseplate.

c.

REMOVE lower casing dowels.

NOTE

' Lower casing weighs approximately 315 lbs.

d.

RIG lower casing.

Carefully LIFT lower casing and LOWER onto cribbing.

c.

f.

REMOVE suction and discharge piping gaskets.

g.

COVER suction and discharge pipe openings.

- 4.2 Pump Cleaning and Inspection C AUTIO N All chemical ccnsumables to be used in or on power plant components

-_must be controlled in accordance with CC 1," Control of Chemical

- Consumable Products," and a Restricted Use Permit must be issued when necessaiy.

4.3.1 Using an approved cleaning solvent, CLEAN all c'omponents.

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Level of Use-STOP -

THINK ACT

' REVIEW eneral 8 of 61.

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4.2.2 ? ;Using a fine-grit abrasive or Scotch--Br.te pad, REMOVE the O

- following from all mating flanges:

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• -- Dirt '

• ' Paint

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Loose scale

• ' Corrosion Burrs Raised surfaces

' NOTE Structural damage and defects include breskage, cracks, deformation, distortion, corrosion, pitting, scoring, scratches, erosion, abrasion, galling, and indications of misalignment.-

5 4.2.3 Visually INSPECT all components for wear, structural defects, and damage.

. 4.2.4 - - IE inspection results are not satisfactory, Refer % Section 4.3, and REPAIR or REPLACE applicable component (s).

4.2.5 REQUEST dual verification, and, with V-blocks positioned 4

beneath bearing locations, INSPECT total indicator runout (TIR) at the following shaft locations:

6 Thrust bearing Thrust-end shaft sleeve Impeller Radial-end shaft sleeve r

" Radial bearing 1 *

- Coupling hub-

,(D Level of Use:

STOP '-

THINK '

ACT REVIEW General R "lf s 9

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9 14.2.6-RECORD the following ont'o Attachment 5:-

Measured TIR values-l V

.M&TE serial No.

a;

- *L Calibration duc date l

z.

4.2.7 E inspection results are not satisfactory, OR TIR isgreater than O.002 inch, Lefer'Ib Section 4.3, and REPAIR or REPLACE-

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shaft.

4.2.8 -

REQUEST dual verification, and MEASURE wear ring.

clearance at the following locations:

?

Thrust-end impeller-to-case wear ring Radial-end impeller-to-case wear ring 4.2.9 RECORD the following onto Attachment 5:

Measured clearance values M&TE serial numbers Calibration due dates 4.2.10 E wear ring inspection results are not satisfactory, OR impeller-to-case wear ring clearance is not 0.010 to 0.021 inch, Refer 7b Section 4.3, and REPLACE impeller wear rings.

FOTE When installing bearin

. between the stator O g isolators, the outside diameter must be measured ring and the radial location chamfer.

4.2.11'. E bearing isolators will be installed, PERFORM the following:

4

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- Level of Use

' STOP ~

. THIND IACT" REWEW Rev.5 v:: General-

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20 0f 61 4

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a.

REQUEST dual verification, and MEASURE interference fx

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fit betwecn bearing isolators and their respective bores at the following locations:

Thrust bearing housing seal bore inside diarr eter and thrust bearing isolator stator outside diamer.:r Radial bearing housing seal bore inside diameter and -

radial bearing isolator stator outside diameter, impeller side Radial bearing end cover seal bore inside diameter and radial bearing isolator stator outside diameter, coupling side b.

RECORD the following onto Attachment 5:

Measured interference fit values M&TE serial numbers Calibration due dates

/^N, c.

LE any interference fit is not 0.001 ',0.003 inch, Refer To V

Section 4.3, and REPAIR or REPLACE the following as applicable:

Radial bearing housing or bearing isolator Thrust bearing housing or bearing isolator Radial bearing end cover or bearing isolator 4.2.12 IE all inspection results are satisfactory, Go To Section 4.4 and ASSEMllLE pump.

)

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Levelof Use STOP THINK ACT REVIEW Rev.5 General 21 of 61

-.4.3 Pump Repair g

i s

L.jd C A U TIO N-This pump falls within the ASME Section XI boundary, Repair or replacement of pressure-retaining components must be evaluated in accordance with WC 3,"ASME Sc..lon XI Repair and Replacement

. Program."

4.3.1 If applicable, Refer To "ASME Section XI Repair and -

Replacement Plan," and REPAIR or REPLACE pressure-retaining components as necessary.

4.3.2 IE impeller-to-case wear ring inspection results are not satisfactory, OR clearance is not 0.010 to 0.021 inch, REPLACE impeller wear ring (4) as follows:

NOTE The instructions for replacing the thrust-end and radiai-end impeller

. wear rings are the same.

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a.

REMOVE ir.ipeller w ar ring (4) as follows:

1) REMOVE wear ring setscrews.

2) CUT or GRIND wear ring from impeller, b.

INSTALL impeller wear ring (4) as follows:

1) Using a small file or fine-grit abrasive, REMOVE any burrs from wear ring seating surface.

2) Using an approved cleaning solvent, CLEAN wear ring seating surface.

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0.11 Level of Use -

STOP'

- THINK '

ACT REVIEW -

General:

97

A NOTE LJ geller wear ring has an interference fit of 0.002 to 0.007 inch on impeller 1

3)' IlEAT impeller wear ring.

4) With larger OD of wear ring facing impeller, INSTALL -

impeller wear ring onto impeller, and ENSURE wear 7

ring is firmly seated against shoulder.

NOTE 4

Wear ring setscrews cannot be installed into the same holes from which they were removed. If the impeller is not new, the wear ring setscrews holes must be drilled and tapped appro::imately one half the distance from--

the existing holes.

5), Using a drill with a No. 7 drill bit, DRILL three holes (approximately 120" apart) 1/2-inch deep into mating

~ O

. joint of impeller hub and wear ring.

V

6) Using a %-inch UNC tap, TliREAD three holes drilled in step 4.3.2.b.5).

7) INSTALL and TIGilTEN impeller wear ring setscrews.

_8) STAKE wear ring setscrews.

4.3.3 REQUEST e.al verification, and MEASURE wear ring -

clearance at the following locations:

Thrust-end impeller-to-case wear ring Radial-end impeller-to-case wear ring 4.3.4 RECORD the following onto Attachment 5:

Measured clearance values M&TE serial numbers Calibration due dates A

+

V

Level of Use STOP

.THINA-ACT REVIEW' General 23 ['f 61

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+EA i,,4 h da 4 4mm rven-JA.o_a

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- 4.3.5 ;

PERFORM applic51e action: -

E impeller-m-case wear :ing clearance is less than 0.010 -

= *-

inch MACHINE impeller wear ring as required to achieve proper _ clearance.

E impeller-to-case wear ring clearance is greater than 0.014 inch, REQUEST FLS to provide instructions for further ~

malatenance..

4.4 Pump Assemlity :

j 4.4.1

' E lower casing was removed, Refer ib Attachment 1, and INSTALLlower casing as followsi a.

REMOVE covers from suction and discharge pipe op-nings.

b.

INSTALL suction and discharge piping gaskets.

j NOTE n

. Pump lower casing weighs approximately 315 lbs.

y c.'

RIG lower casing.

d.

Carefully LIFT lower casing and LOWER onto baseplate.

e.

INSTALL lower casing dowels.

P f.

INSTALL and TIGIITEN fasteners securing lower casing to baseplate,

g. - CONNECT suction and discharge piping.

4.4.2 INSTALL new parting flange gasket as follows:

With top surface of upper casing facing downward, a.

POSITION upper casing onto ground or work surface.

- x)

Level of Use -

'sToP THINK '

^ACT

' REVIEW Rev.5

General 24 of 61

=

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4

-3. :

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O V

c^urios: V r

To,revent' damage to gasket, casing mating surfaces must be free of dirt

. ani foreign material before installing gasket, j

~

b. -: ENSURE gasket and upper casing mating surfaces arej thoroughly cleaned.

POSITION %-inch gasket material over upper casing c.

mating surface.

d.

CUT gasket.ateriallarger than size required.

CUT holes in gasket to allow for lower casing stud bolts and c.

dowel pins.

f.

APPLY approved gasket adhesive to lower casing mating -

surface.

g.

POSITION gasket onto lower casing mating surface.

h.

RIO upper casing.

i.

LIFT upper casing as straight as possible.

t j.

With holes in upper casing aligned with stud bolts in lower casing, LOWER upper casing onto lower casing.

)

NOTE-Tb casure even pressure on gasket, at least eight casing bolts should be o

installed symmetrically around casing. For best results, two casing bolts should be installed at each end of casmg and four casing bolte should be

-installed in middle of casing, k; Using a diagonal sequence, INSTALL and TIGHTEN eight j

casing bolts symmetrically around casing.

~

1.

ALLOW gasket adhesive to cure for at least four hours.

m; WilEN at least four hours has elapsed, REMOVE eight

' casing bolts.

Level of Use-

-STOP

~ THINK 5ACTT REVIEW L

~

Rev.5 LGeneral-

25.of 61

^'

.e-w-

g

'~

,e l n.

RIG upper casing. -

l g

' o.' = LIFT upper casing as straight as possible.

p.

MOVE upper casing o suitable area.

C A UTIO N 1b prevent leakage around wear rings and stuffing box, the ga.cket must 7

overhang 0.010 inch into the casing at these locations.

q.

Refer Tb Attachment 3, and, using a razor knife, TRIM casing gasket such that gasket extends into case bottom half approximately 0.010 inch at the wear ring and stuffing box lecations.

4.4.3 IE impeller was remow ! from shaft, INSTALL impeller (3) as follows:

a.

INSTALL impeller key (11) into shaft.

fu b.

POSITION radial-end shaft sleeve (8) onto shaft, and ENSURE shaft sleeve is properly seated over impeller key.-

1" 1

c.

Using an approved lubricant, LUdRICATE radial-end shaft sleeve O-ring (456),

d.

INSTALL radial-end shaft sleeve 0-ring onto shaft.

c.

Refer Tb Attachment 5, and THREAD radial-end shaft sleeve nut (127) onto shaft, f.

ADJUST shaft sleeve rmt until the dimension between the inboard end of shaft and impeller side of the shaft sleeve is equal to the dimension measured in step 4.1.13.a.

g.

INSTALL, but do not tighten, setscrews securing radial-end shaft sleeve nut to shaft.

'U i Level of Use STCP THINK

'ACT~

REVIEW

' General 2,;.5 Re

,61

NOTE 1.

The impeller must be installed such that it rotates counterclockwise when viewed from the driven (inboard) end.

l 2.

The impeller must be installed in :he same position it was in prior to -

removal, h.

INSTALI impeller onto shaft such that the impeller rotates counterclockwise when viewed from the driven (inboard) end.

1.

ENSURE impeller is properly seated over key and firmly sea;cd against shaft sleeve gasket.

J.

POSITION thrust-end shaft s!ceve (8) onto shaft, and ENSUllE shaft sleeve is properly seated over impeller key.

k, Using an approved lubricant, LUllillCATE thrust-end shaft sleeve O-ring (456).

1.

INSTALL thrust-end shaft sleeve O-ring (456),

l

m. INSTALL and TIGl! TEN thrust-end shaft sleeve nut (127) onto shaft _

n.

INSTALL, but do not tighten, setscrews securing radial-end shaft sleeve nut to shaft.

4.4.4 INSPECT impeller concentricity as follows:

MOUNT shaft and impeller assembly on V-blocks,

, a.

b.

ItEQUEST dual verification, and, using a dial indicator, INSPECT shaft and impeller assembly for high spots and Till at the following locations:

Circumference of thrust-end impeller wear ring Circumfcience of radial-enn impeller wear ring 0

l Level of USO STOP THINK

-ACT REVIEW Rev.5 General-27 of 61 b

j I

r Q

NOTE detected.g of wear rings may be required if high spots or excessive TIR are Machinin Ib ensure that machining of wear rin ;s does not result in j

excessive clearances, FLS should be consulted acfore machining, j

i c.

IE high spots are detected.QR TIR is greater than 0.0021pch, I

REQUEST FLS to provide instructions for further i

j maintenance, d.

RECORD the following onto Attachment 5:

As-left TIR values M&TE serial numbers j

i Calibration duc dates a

4.4.5 REQUEST FLS to deter.nine ifimpeller and shaft must be i

. balanced.

4.4.6 IE directed by FLS, REQUEST Condition Based Maintenance Department to balance impeller arid shaft.

4.4.7 MOUNT shaft and impeller assembly on stands.

4.4.8

. With larger OD of wear ring facing impeller, POSITION thrust-end case wear ring (6) over impeller hub.

1 4.4.9 INSTALL thrust-end mechanical seal components as follows:

a.

POSITION collar (S-12) over shaft sleeve (8).

-(

b.

Using aa approved lubricant, sparingly LUBRICATE seat ring (S-2) and bellows (S-4).

c.

Using an approved cleaning solvent, carefully WIPE lapped scaling faces of seat (S-1) and washer (S-4) until thoroughly clean.

5

d.1 ASSEMBLE mechanical seal components.

- c; POSITION mechanical seal assembly (429) over shaft sleeve.

O Level of Use STOP-THINKL ACT REVIEW -

Rev.5 General.

28 of 61 i

l

.m

i 4

W j

f.

INSTALL gland plate 0-ring (S-11) onto gland j

x plate (S-12).

g.

POSITION gland plate (S-14) onto shaft.

c 4.4.10 INSTALL thrust bearing components as follows:

i

. a.

IE thrust bearing seal ring is being installed, PERFORM the following:

1) INSTALLflinger(157).

l

2) With lip of seal facing bearing, INSTALL thrust bearing i

seal ring (308B) into thrust bearing housing (159).

b.

IE thrust bearing isolator (3088) is being installed, PERFORM the following:

Y C A UTIO N Caution must be used to prevent cocking or overexerting the bearing isolator in the bearing housing. If the bearing isolator is able to be seated O'

with hand pressure only, the interference fit is inadequate. The bearing t

isolator must have 0.001 to 0.003 inch interierence fit.

NOTE A 15 degree by 0.015 inch chamfer is provided on the bearin ; isolator to help prevent overexertion and to ensure the isolator is instal ed squarely. A hand arbor press is recommended for seating the bearing isolator into the bearing housing. Slight shavings of the isolator stator 0-rin ; may be expected with a good press fit. Any sheared 0-ring materia. must be removed.

1) ENSURE the expulsion port is positioned downward (at the 6 o' clock position) and INSTALL thrust bearing isolator (308B) into thrust bearing housing (159),

2) REMOVE any sheared 0-ring material.

3) Using an approved lubricant, sparingly LUBRICATE thrust-end of shaft (10).

Level of USe.

STOP^

THINK ACT REVIEW Rew 5 General 29 of 61

,e-

.--e----r-

--e.r

.et-+-

1mm-ev -

---r,-

r-ww-y

-e.

.+n--r.

O V

CAUrios V

'Ib preven: damage to the thrust bearing isolator internal O-ring, ling even 1ressure snust be applied to the bearing isolator rotor when instal i

3 earing housing onto shaft.

c.

INSTALL thrust bearing housing (159).

d.

INSTALL thrust bearing (204) as follows:

1) E replacement bearing includes bearing shields, REMOVE bearing shields.

C A UTIO N 7b prevent damake to bearing during heating process, bearing temperature must not exceed JO'E

2) IIEAT bearing to 200*F, and ENSURE temperature does not exceed 250'E

3) E using an induction bearing heater, DE-MAGNETIZE bearing.

4) INSTALL bearing onto shaft, and IIOLD bearing firmly against shaft shoulder until bearing cools, c.

INSTALL thrust bearing snap ring (397).

f.

Using an approved gasket adhesive, INSTALL thrust bearing end cover gasket (262).

g.

POSITION thrust bearing end cover (160A) over thrust bearing housing (159).

h.

INSTALL and TIGIITEN fasteners securing thrust bearing end cover (160B) to thrus, bearing housing (159).

4.4.11 With larger OD.of wear rin' facing impeller, POSITION radial-end case wear ring /J) over impeller hub.

= 4.4.12 INSTALL radial-end mechanical seal components as follows:

MP 720.11

~

Level of Use STOP THINK

- ACT REVIEW R" 5 General 30 of 61 y

vw r gy r-m,e-gyr w wry-pw-'

-fe-

-3'dy+v's-w

-p ym--*

4

+y.-

-^-

yy r-vr e-y- - -

--v v

y-

l P

a.

POsr CION collar (S-12) over shaft sleeve (8).

l 4

i b.

Using na approved lubricant, sparingly LUBRICATE seat ring (S-2) and b.:ilows (S-4).

c. _ Using an approved cleaning solvent, carefully dlPE lapped l

scaling faces of seat (S-1) and washer (S-4) until thoroughly

Clean, j

i d.

ASSEM BLE mechanical seal components.

}

e.

POSITION mechanical seal assembly (429) over shaft sleeve.

f.

INSTALL gland plate O-ring (S-II) onto gland plate (S-12). -

g. - POSITION g!and plate (S-14) onto shaft.

4.4.13 - INSTALL radial bearing components as follows:

i E radial bearing seal ring is being installed, PERFORM the l

a.

following:

l

-1) INSTALL flinger (157).

{

2) With lip of seal facing bearing, INSTALL radial bearing seal ring (308B) into radial bearing housing (159)._

g i

b.

E radial bearing isolator (308B) is being installed, PERFORM the following:

_).

f x

i y( 3 MP 720.11 l

Level of USe iSTOP

'THINK ACT'

" REVIEW Rev.5 I

General 31 of 61-4 y v n--

+

=

w

-w- - -, - - -,...

,~-

-r--

,m--,-4

- -.. - = _ -

is.4 i

C A UTIO N u

a Caution must be used to prevent cocking or overexerting the bearing isolator in the bearing housing. lf the bearing isolator is able to be seated e

with hand pressure only, the interference fit is inau' equate. The bearing l

[

isolator mdst have 0.001 to 0.003 inch interference fit.

NOTE A 15 degree by 0.015 inch chamfer is provided on the bearin,; isolator to help prevent overexertion and to ensure the isolator is instal ed squarely. A hand arbor press is recommended for seating the bearing isolator into the i

bearing housing. Slight shavings of the isolator stator 0-rin,; may be expected with a good press fit. Any sheared 0-ring materia must be removed.

1) ENSURE the ex?ulsion port is positioned downward (at the 6 o' clock pos tion) and INSTALL radial bearing isolator (3080) into radial bearing housing (159).

2) REMOVE any sheared 0-ring material.

3) Using an approved lubricant, sparingly LUBRICATE radial-end of shaft (10).

C A UTIO N

'Ib prevent damage to the radial bearing isolator i.: 3rnal 0-ring, even oressure must be applied to the bearing isolator rotor when installing l> caring housmg onto shaft.

c.

INSTALL radial bearing housing (159).

d.

INSTALL radial bearing (204) as follows:

1) IE replacement bearing includes bearing shields, REMOVE bearing shields.

f l,,

Levelof Use STOP THINK ACT REVIEW l

General.

Rev. 5 g

320fm

1 l

~

C A UTIO N

'Ib prevent damak'.50'Ee to bearing during heating process, bearing temperature must ilot exceed.

2) lihAT bearing to 200*F, and ENSURE temperature does ilot exceed 250*E

3) If using an induction bearing heater, DE-M AGNETIZE bearing.

4) INSTALL bearing onto shaft, and IlOLD bearing firmly against shaft shoulder until bearing cools, Using an approved gasket adhesive, INSTALL radial bearing c.

end cover gasket (262).

f.

IE radial bearing end cover seal ring is being installed, with lip of seal facing bearing, INSTALL radial bearing end cover seal ring (308A) into radial bearing end cover (160A).

]

g.

IE radial bearing end cover isolator (30SA) is being installed, u/

PERI OllM the following:

L _)

Level of Use STOP THINK ACT REVIEVv R v. 5 General 33 of 61

l

'C A UTIO N Caution must be used to prevent cocking or overexerting the bearing isolator in the bearing housing. If the bearing isolator is able to be seated with hand pressure only, the interference fit is inadequate. The bearing isolator must have 0.001 to 0.003 inch interference fit.

NOTE A 15 degree by 0.015 inch chamfer is provided on the bearin.; isolator to help prevent overexertion and to ensure the isolator is instal ed squarely. A hand arbor press is recommended for seating the bearing isolator into the bearing housing. Slight shavings of the isolator stator 0-rin ; may be expected with a good press fit. Any sheared 0-ring materia must be removed.

1) ENSUltE the expulsion port is positioned downward (at the 6 o' clock position) and INSTALL radial bearing isolator (308A) into radial bearir g end cover (159).

2) REMOVE any sheared 0-ring material.

3) Using an approved lubricant, sparingly LUURICATE radial-end of shaft (10).

Y C A UTIO N

% prevent damage to the radial bearing isolator internal 0-ring. even tressure must be applied to the bearing isolator rotor when installing 3 caring housing onto shaft.

h.

POSITION radial bearing end cover (160A) over radial bearing housing, i.

INSTAL.L and TIGIITEN fasteners securing radial bearing end cover (160A) to radial bearing housing (159).

J.

INSTALL pump coupling cover and seal.

k.

INSTALL pump coupling hub as follows:

O\\)

Level of Use STOP

.THINK

. ACT REVIEW.

General 3;;.5 R

r61 es.yn.i+.y-nm a

i--4r v.m.m

,gi

+w

---v-w

1) INSTALL pump coupling hub key onto shaf t.

()

STOP WARNING STOP

'Ib prevent injury to personnel, all combustible materials, flammable liquids, compressed passes, and ignition sources must be used in accordance with WC. 7," Fire Protection Program."

Y C A UTIO N

'Ib prevent damage to coupli g hub during installation, heat must be applied crcnly to coupling iu.

NOTE 1.

Coupling hub has an interference fit of approximately 0.001 to 0.003 inch on shaft. Coupling hub installation may require the application of heat.

2.

The coupling hub must be installed flush with the end of the shaft.

fq V

2) lhenly iIEAT pump coupling hub to 250 to 300*E

3) INSTALL pump coup!!ng hub onto shaft, and ENSURE the following:

Coupling hub is properly seated over key.

Face of coupling hub is flush with end of shaft, s

4.4.14 INSTALL rotating assembly as follows:

NOTE Rotating assembly weighs approximately 105 lbs.

a..lE necessary, RlG rotating assembly, p)

-\\

0.H Levelof Use sToP THINK

'ACT~

REVIEW R

General 5fa

b.

LIFI'sotating assembly and LOWER rotating assembly until j

approximately one foot above lower casing c.

ALIGN the following with lower casing:

Case wear rings t

Impeller j

Hearing housings t

Y CAUTION Y lb ensure proper seating of the rotating assembly, the portion of the casing flange gasket that overhangs 0.010 into the lower casing must be turned upward before installing the rotating assembly, d.

Carr/hlly PULL upward on 0.010 overhang portion of the casing flange gasket, Slowly LOWER rotating assembly into lower casing, and c.

ENSURE the following:

Rotating assembly is lowered as straight as possible, Case wear rings are properly mated with roll pins, Rotating assembly does not rest on gasket overhang.

1 4.4.15 INSTALL, but do not tighten, fasteners securing gland plates (S-14) to lower easing.

4.4.16 INSTALL dowels aligning thrust bearing housing (159) to lawer casing.

4.4.17 INSTALL and TIGitTEN fasteners securing thrust bearing housing to lower casing.

4.4.18 INSTALL dowels aligning radial bearing housing (159) to lower casing.

4.4.19 INSTALL and TIGilTEN fasteners securing radial bearing housing to lower casing.

i Level of Use-STOP-THINK ACT REVIEW

- General R [' $

6fa m

4.4.20 REQUEST dual verification, and MEASURE as-left shaft end

(

play dimension as follows.

v a.

PUSil shaft towards thrust end of pump as far as possible.

b.

POSITION dial indicator against end of shaft, c.

PULL shaft towards radial end of pump, and MEASURE total shaft end play.

d.

RECORD the following onto Attachment 5:

Measured end play value M&TE serial No.

Calibration duc date c.

IE shaft end play dimension is not 0.008 to 0.010 inch, REQUEST FLS to provide instructions for further maintenance, gyg.g The position of the impeller can be adjusted by turning the shaft sleeve nuts.

4.4.21 IE impeller is not centered in lower casing, CENTER impeller in lower casing.

4.4.22 MIEN impeller is centered in lower casing, PERFORM the following:

INSTALL and TIGlITEN setscrews securing shaft sleeve nuts to shaft.

INSTALL and TIGilTEN setscrews securing impeller to shaft.

'l Level of USO S10P THINK ACT REVIEW General 7g

j i

NOTE The instructions for setting the thrust-end mechanical seal assembly are the same as those for setting the radial-end mechanical seal assembly.

4.4.23 SET mechanicai seal assemblies as follows:

i 5

a.

SCRIDE a line on shaft sleeve 2 /16-inch from face of stuffing box.

b.

POSITION inside end of collar (the end facing the impeller) at line scribed in step 4.4.23.a., and TIGilTEN collar setscrews (S-13).

4.4.24 INSTALL upper casing as follows:

a.

RIO upper casing.

b.

LIIT upper casing as straight as possible.

Y CAUTION

'Ib prevent leakage, the upper and lower casing mating surfaces must be thoroughly clean and free of burrs, nicks, and raised surfaces, c.

ENSURE mating surfaces of upper and lower casing are thoroughly clean and free of burrs, nicks, and raised surfaces.

C A UTIO N

'Ib prevent damage to rotating assembly and case wear rings, upper casing must be lowered evenly and carefully onto lower casing.

d.

With upper casing aligned with wear rings and studs in lower casing, carefully LOWER upper casing onto lower casing.

c.

REMOVE rigging, f.

ENSURE upper casing is properly seated.

O Levelof Use STOP THINK ACT REVIEW R

General

?g

t

• =,

t g.

REMOVE cyebolts from upper casing, i

h. INSTALLcase dowels, j

i. -INSTALL, but do not tighten, casing bolts.

J.

TOROUE casing bolts as follows:

l

1) Refer'Ib Attachment 4, and, using the tightening j

sequence shown, TOROUE casing bolts to initial torque j

of 40 fielbs (38 to 42 fielbs).

l

2) Using the tightening sequence shown, TOROUE casing bolts to a secondary torque of 80 fielbs (76 to 84 fielbs).

l

3) REQUEST dual verification, and, using the lightening sequence shown, TOROUE casing bolts to a final torque of 120 fielbs (114 to 126 fielbs).-

4) RECORD the following onto Attachment 5:

Measured final torque value MATE serial numbers l

Calibration duc dates 4.4.25 INSTALL, but do not tighten, fasteners securing gland plates (S-14) to casing.

4.4.26 Using a strap wrench, ROTATE shaft by hand, and ENSURE shaft turns freely without binding.

i 4.4.27 IE shaft does not turn freely without binding, REQUEST FLS to provide instructions for further maintenance.

4.4.28 IE motor was moved in order to gain access to pmnp components, MOVE motor as follows:

t i

N V

MP 720.11 Level of Use

' STOP -

THINK ACT REVIEW J

Rey,5 1

General.

,~

39 0f 61

.~,. -

,e........, -,, _.

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

i NOTE Motor weighs approximately 460 lbs..

l a.

RIG motor as necessary to permit motor to be repositioned f

on foundation.

- b.

LIFT motor.

c.

REMOVE motor support blocks from beneath motor.

I d.

IE necessary, POSITION motor shims beneath mounting

[

feet.

j c.

POSITION motor in as-found location.

f.

INSTALL and TIGilTEN motor hold-down fasteners.

g.

CONNECT motor leadwires.

h.

RECORD landed leads onto WC 10 (Att)," Lifted Lead and Temporary Modification Data Sheet."

l i.

CONNECT any conduit that was disconnected during disassembly.

J.

BUMP motor and ENSURE proper direction of rotation.

4.4.29 ALIGN and COUPLE pump and motor as follows:

a.

SET motor rotating asembly at center of its end play, and MAINTAIN rotating assembly in that position.

b.

REQUEST dual verification, and MEASURE gap between face of motor coupling hub and face of pump coupling hub.

c.

IE motor and pump coupling hub separation dimension is net between /16 and U16 nch, MOVE motor as necessary.

3 i

I d ' RELEASE nmtor rotating assembly from center ofits end play position.-

c.

RECORD as-left pump and motor coupling hub separation l

dimension onto Attachment 5.

u(

' Level of USe STOP

' THINK ACT REVIEW.

R General.

40 0f M -

h

~..

7 3

f.

REQUEST dual verification, Refer 'Ib J MP 710A,.

i "llorizontal Shaft Alignment," and ALIGN pump and motor to the following tolerances:

Angular (face-to-face) alignment no girater than 0.002 l

inch TIR

• - Parallel (rim-tc -rim) alignment no greater than 0.004 inch TIR g.

RECORD the following onto Attachment 5.

As-left alignment values M&TE serial numbers Calibration due dates

h. ALIGN match marks for the following components:

Pump coupling hub Coupling covers Motor coupling hub i.

INSTALL coupling cover seals.

[

J.

INSTALL coupling gasket.

k.

INSTALL grid, i

1.-

Refer to MP 791.0 (Att)," Fuel Pool Cooling (310)," and using coupling grease, LUllRICATE spaces between and around grid.

1

m. WIPE off excess grease flush with grid. -

n.

INSTALL and TIGI-ITEN fasteners securing coupling cover halves.

4.4.30._ CONNECT the following:

1 Upper casing vent piping

]

Seal water piping

Level of USS STOP THINK ACT

- REVIEW '

Rn. 5 Genera 1,g

1 4.4.31 INSTALL and F!LL bearing oilers as follows:

(

Using an approved thread sealant, INSTALL bearing oilers.

a.

NOTE 1

hiaximum bearing bousing oillevel is /2 way up the bottom most ball of the bearing, and should be clearly marked on the outside of the bearing housing. hiinimum oil level is /g inch below the maximum oil level mark, 1

if the housing is not marked, the proper dimension to the maxirnum oil 3

level location is approximately 1 /16-inch (30mm) down from the shaft centerline, b.

Refer 1b Figure - 2, and using a level and ruler, h1EASURE the same distance (Y) down from the level, and SET the oiler and bearing housing oillevel to the same height.

llearing Figure - 2. Ilearing Oiler level Adjustment Level I f ous.mg

<7 o

p

37,,

N/

(30 mm) r N

N Y

y s

c 7.- -..-

1,",,

(.... )..

-r i

t-5

/,

g N

sef Oi

\\

J~/

Oiler hiinimum

\\

/

Oil Level Bearing m

i Lovel of USO STOP THINK ACT REVIEW Rv5 General 42cf61

4 i

{)

NOTE e oiler level adjustment arms, i

The oil level will reside at the top of 11}/2 way up the bottom most ball of Maximum bearing housing oillevelis the bearing. Minimum oillevelis /3 nch below the maximum oillevel.

l 1 i c.

ADJUST beat!ng oiler level adjustment arms to obtain maximum oil level.

d.

Refer 7b Attachment I and MP 791.0 (Att)," Fuel Pool Cooling (310)," and FILL thrust and radial bearing housing assemblies as necessary to maintain oil level at the level shown.

4.4.32 Evenly TIGliTEN fasteners securing gland plates (S-14) to Casing.

4.4.33 INSTALL coupling guard.

4.4.34 NOTIFY Operations Department that pump maintenance is complete.

4.5 Operational Checkout 4.5.1

.MJEN system conditions permit, REQUEST Operations Department to run, fill, and vent pump.

4.5.2 INSPECT all joints and :.als for leakage.

4.5.3 IE leakage is detected, REOUEST FLS to provide instructions for further maintenance.

4.6 Mechanical Seal Heplacement NOTE 1.

The instructions in this section cover mechanical seal replacement independent of a pump overhaul.

2.

The instructions n this section are applicable to both the thrust-end 2

and radial-end mechanical seals.

4.6.1 REMOVE mechanical seal as follows:

i O

LJ Levelof Use sToP THINK' ACT REVIEW

General R*"lf 61 -

3

+

e

~

..,,-~

i CAUTION Tb prevent changing the center position of the impeller, only one seal should be replaced at a time, i

a.

Refer 7b Attachment 1, and REMOVE fasteners securing gland plates (S-14) to casing.

i b.

SLIDE gland plates away from casing as far as possible.

c.

If necessary, Refer 1b steps 4.1.4 and 4.1.5, and PERFORM the following:

1) UNCOUPLE pump from motor.

l

2) MEASURE as-found coupling hub separation dimension, d.

DRAIN hpplicable bearing housing as follows:

1) POSITION suitable receptacle beneath bearing housing.

O V

2) REMOVE plug from bottom of bearing oiler, and DRAIN oilinto receptacle, c.

IE replacing radial-end mechanical seal assembly, PERFORM the following:

1) Refer 1b step 4.1.7, and MOVE motor as necessary to gain anecess to pump components.

2) Refer '1b step 4.1.11, and REMOVE pump coupling hub.

f.

REMOVE bearing oiler, g.

REMOVE two dowels from bearing housing (159).

h.

REMOVE fasteners securing beming housing (159) to case bottom half, i.

REMOVE fasteners securing bearing end cover (160A,1608) to bearing housing (159).

i.

REMOVE bearing end cover (160A,160B).

O,n, Levelof USe STOP THINK ACT REVIEW R

General EJfa

l i

k.

REMOVE bearing end cover gasket (262),

k/

1.

E removing thrust beating, REMOVE bearing snap ring (397).

m. Using bearing pu'ict, REMOVE bearing housing (159).

u n.

REMOVE bearing (204,205).

o.

REMOVE bearitig housing seal ring or bearing isolator I

(308A,308B) as applicable.

NOTE Pumps equipped with a bearing isolator have no flinger.

p.

E equipped, REMOVE flinger (157).

q.

E shaft sleeve removal is necessary, PERFORM the following:

1) REMOVE setscrews securing shaft sleeve nut (127) to

[

shaft.

2) REMOVE shaft sleeve nut (127).

3) REMOVE shaft sleeve 0-ring (456).

4) REMOVE shaft sleeve (8).

5) LOOSEN setscrews (S-13) securing collar (S-12) to shaft sleeve and REMOVE collar.

r.

E shaft sleeve removal is not necessary, REMOVE mechanical seal assembly (429), minus collar (S -12), as a single unit.

4.6.2 Refer 1b Sec. tion 4.2, and CLEAN and INSPECT disassembled components as necessary.

4.6.3 INSTALL mechanical seal as follows:

3.

E shaft sleeve was removed, PERFORM the following:

i t

MP 720.11

- Level of USB STOP THINK

'ACT REVIEW

.Goneral 4,;. 5 Rc

,g u

1

4 0

1) POSITION shaft sleeve (8) onto shaft, and ENSURE i

O shaft sleeve is properly seated over impelier key.

V

2) ~ SCRiflE a live on shaft sleeve at face of stuffing box.

5

3) SCRillE a line on shaft sleeve 2 /16-inch from line scribed in step 4.6.3.a.3).

4) POSITION inside end of collar (S-12) (the end facing the impeller) at line scribed in step 4.6.3.a.3), and TIGilTEN collar setscrews (S-13).

5) POSITION shaft sleeve (8) and collar onto shaft, and i

ENSURE shaft sleeve is properly seated over impeller t

key.

t

6) Us!ng an approved lubricant, LU13RICATE shaft sleeve 0-ring (456).

7) INSTALL shaft sleev; 0-ring (456).

8) INSTALL and TIGl! TEN thrust-end shaft sleeve nut (127) onto shaft.

9) INSTALL and TIGilTEN cetscrews securing shaft sleeve nut to shaft.

b.

IE shaft sleeve was not removed, ENSURE inside end of collar (S-12) (the end facing the impeller) is positioned 5

2 /16-inch from face of stuffing box.

Using an approved lubricant, sparingly LUI3RICATE seat c.

ring (S-2) and bellows (S-4),

d.

Using an approved cleaning solvent, carefully WIPE lapped scaling faces of seat (S-1) and washer (S-4) until thoroughly

clean, c.

ASSEMilLE mechanical seal components.

f.

POSITION mechanical seal assembly (429) over shaft sleeve.

g.

INSTALL gland plate O-ring (S-11) into gland plate (S-12).

h.

POSITION gland plate (S -14) onto shaft.

()

- Level of Use-sToe-THINK ACT REVIEW

.f6 f 61 Nal m-,

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9 m

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1.

E thrust-end mechanical seal was replaced, Refer % step

.hv 4.4.10 and INSTALL thrust bearing components.

[

s j.

E radial-end mechanical seal was replaced, Refer To step -

l 4.4.13 and INSTALL radial bearing components.

k.. INSTALL, but do not tighten, fasteners securing gland plate (S-14) to lower casing..

l.

INSTALL dowels aligning bearing housing (159) to lower casing.

m. INSTALL and TIGilTEN fasteners securing bearing housing i

to lower casing.

i Refer Tb step 4.4.20, and MEASURE as-left shaft end play n.

i

- dimension.

s

. E radial-end mechanical seal was replaced, PERFORM the o.

following:-

1) Refer 'Ib step 4.4.28 and MOVE motor as necessary..

2) - Refer 'Ib step 4.4.29 and ALIGN and COUPLE pump O

and motor, p.

Refer % step 4.4.31, and INSTALL and FILL bearing oilers.

q.

Evenly TIGilTEN fasteners securing gland plate (S-14) to lower casing.

E applicable, INSTALL coupling guard.

r.

NOTIFY Operations Department that pump maintenance is s.

3 complete.

4 5.

Levei of Use -

STOP

' THINK IACT

' REVIEW w.5 l General' 9g g

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5. REYlEW'AND SIGN-OFF O

5.1 The review and sign-off of Attachment 5 and the AWO satisfy the review and sign-off of this procedure.

6. REEERENCES i

- 6.1 NNECo Accident Prevention Manual

- 6.2 Drawings 6.2.1 NUSCo Drawing 25202-26007, Sheet 2," Piping and Instrumentation Diagram, Fuel Pool Cooling System" 6.2.2 NUSCo Drawing 25202-29019, Sheet 3," Fuel Pool Cooling -

(

Pump" 6.2.3 John Crane Packing Co. Drawing F-SP-11183," John Crane i

'lype-121/2 D. llellows Shaft Seal Ingersoll Rand Co." Rev.14 I

6.3-Vendor Manuals 6.3.1 Ingersoll-Rand Company, Form No. 7978-F " Instructions for Installation--Operation and Maintenance of'S' Line General l

Os Service Pumps" 25202-365-004A 6.3.2 Falk Corporation, " Instructions for Installation and Maintenance--Sizes 20 Thru 140" 6.4 Administrative Procedures 6.4.1 CC 1,"Comrol of Chemical Consumable Products" 6.4.2 WC 3,"ASME Section XI Repair and Replacement Program" 6.4.3 WC 7," Fire Protection Program 6.4.4 WC 8," Control and Calibration of Measuring and 7bst Equipment" 6.4.5 WC 10. "'!!:mporary Modifications" l

26.5 - Maintenance Pr'ocedures:

6.5.1 C MP 710A,"florizontal Shaft Alignment" p%.)

- Level of Use STOP ~

THINK ACT REVIEW General-R*",-

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6.5.2 MP 791.0," Plant Component Lubrication" 6.6 Other Dneuments 6.6.1 Millstone Unit 1 Maintenance Department Main Purchase Order j

(MPO) File #890 6.6.2

- 2/8/96 teleon record between Ingersoll-Dresser Pump Co.'Ibch rep. Manish Patel and NU Procedure Writer Tim McNerney 6.6.3 Replacement item evaluation form RlE-95-0054," Coupling

'lype T20 Steel Flex" 6.6.4 11/18/96 Memo No. CllM-96-309 from D.W. Leubner of CBM to P.J. O'Neill of Unit 1 Tech Support regarding " Millstone Unit 1 (MP1) Spent Fuel Cooling Pump Coupling Alignment" 6.6.5 Engineering Evaluation M1-EV-960029," Spent Fuel Pool Cooling Pump Alignment," dated 11/18/96 6.6.6 1/15/97 Memo No. CllM-97-014 from D. W. Leubner of Cl3M to Tim McNerney Unit 1 Maintenance regarding procedure change recommendations of" Overhaul of Fuel Pool Cooling Pumps" maintenance procedure 6.6.7 1/23/97 Memo No. CllM-97-028 from D. W. Leubner of CBM to Tim McNerney Unit 1 Maintenance regarding correction of procedure change recommendations to " Overhaul of Fuel Pool Cooling Pumps" maintenance procedure 6.6.8 Replacement item evaluation form PSE-MPl-E-95-018,

" Fuel Pool Cooling Pump Ilearing Seals" dated 2/24/95 6.6.9 Minor Modification MMOD Mi-97555," Fuel Pool Cooling Pump M4-lll! Seal Rep scement" 6.6.10 Action Request NR 97004498," Revise MP 720.11 for the Spent Fuel Cooling Pumps for installing the bearing isolators and adjustment of bearing housing constant level oiler" 7, '

SUMMARY

OF CIIANGES 7.1 This 'tevision incorporates instructions to replace the mechanical seal assembly independent of a pump overhaul.

7,2 Added a 0 to 1 inch dial indicator to M&TE list.

O

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i 7.3 Updated references as a result of a Iliennial Review.

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Attacliment 1 Pump Crus-Section View (Sheet 4 of 4)

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ITDI #

DESCRIITION ITDI #

DESCRIITION 3

IMPELLER S-I SEAT

.4 IMPFI IFR WEAR RING S-2 SEAT RING 6

CASE MEAR RING S-3 WAS11ER 8

SIIAFTSLEEVE 5-4 BELLOH3 10 SilAFT S-5 RETAINER II IMPELLER KEY S-6 SPRING 12 COUPIJNG KEY S-7 DISC 16 GIAND S-8 DRIVE BAND 127 Sl! AFT SLEEVE NOT S-9 SPRING IIOLCER 157 FUNGER S -11 GIAND PIATE O-RING 159 BEARING IIOUSING S -12 COLIAR

~

160A RADIAL BEARING END COVER S - 13 SETSCREW

~

160I1 T11 RUST BEARING END COVER S -14 GIAND PLSTE 170 CASING GASKET 183 CASING 204 TIIRUST BEARING 205 RADIAL BEARING 262 END COVER GASKET 30KA SEAL RING OR BEARING ISOIATOR 303B SEAL RING OR BEARING ISOIATOR l

397 SNAP RING 429 MEC11ANICAL SFAL ASSDIBLY 456 0-RING q

g MP 720.11 Level of Use

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a, 55 of 61 s

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Casing Flange Gasket Fabrication Details (Sheet 1 of 1)

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O MP 720.11 Levelof Use Genemi ST P.

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Rev 5 56 of 61 e

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Attachment 4

~^

i Upper Casing' Bolt Tightening Sequence:

(Sheet 1 o'1)-

i

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23.,

20

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16-15 a ---

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12-

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qs' Attac ment 3

?.

Inspection Data Record (Sheet 1 of 4) o AWO NO.

LOCALID STEP NO.

. INSPECTION ACCEITANCE INSPECTION PERFORMED !

VERIFIED CRITERIA RESULTS Br/ DATE BY/DATE 4.1.5 As-Found Coupling IIub Reference Only Separation

4.1.13.a.

As-Found Dimension Be-Reference Only tween Inboard End of Shaft and Face of Impeller IIub i'I 4.2.5 Shaft Runout:

TIR s 0.002" e

l Thrust Bearing TIR i

Thrust-End Shaft Sleeve TIR' 1

Impeller TIR 1

l Radial-End Shaft Sleeve TIR Radial Bearing TIR Coupling IIub TIR i

M&TE Ser. No.

Cal. Duc Date i

MP 720.11 Level of Use g }g.7 Rev.5 General a

ss of 61 q

m.

~

g Inspection Data Record

~. -

(Steet 2 of 4)

.1

_=

i

. STEP NO.

INSPECTION ACCEITANCE INSPECTION L PERFORMED

VERIFIED i.

CRITERIA '

RESULTS.

BY/ DATE BY/ DATE ~

~

l l 4.2.8 Thrust-End Impeller-to-0.010 to 0.014" l.

Case Wear Ring Clearance (New)

ID

- OD = CLR L

.i or-W 0.010 to 0.021"

=

4.3.3 -

Radial-End Impeller-to-(In-Service)

ID

- OD CLR

=

I Case Wear Ring Clearance i

M&TE Ser. No.

Cal. Due Date M&TE Ser. No.

Cal. Due Date 4.2.11.a.

Thrust Bearing Housing-0.001 to 0.003"

=

to-Bearing Isolator OD - ID

=. INTF Interference Fit Radial Bearing Housing-to-0.001 to 0.003"

=

Bearing Isolator Interference OD ' - ID INTF

=

Fit (Impeller Side)

Radial Bearing End Cover-to-0.00110 0.003"

=

l Bearing Isolator Interference OD - ID INTF-

=

1 Fit (Coupling Side)

M&TE Ser. No.

Cal. Due Date M&TE Ser. No.

Cal. Due Date J

1 MP.720.11 Level of Use

,f, r g;7 _.gh7 Rev. 5

. General

.:. e

,23 59 ef 61

.=

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Atta me;t s Inspection Data Record (Sheet 3 of 4)

STEP NO.

INF4PECTION ACCEI'rANCE INSPECTION :

PERFOR.\\tED.

TIRIFIED CRITERIA RESULTS BY/ DATE BY/ DATE i 4.4.4.b.

As-Left Impeller No High Spots Concentricity-TIR s 0.002" Circumference of Thrust-End

" TIR Impeller Wear Ring Circumference of Radial-End '

" TIR Impeller Wear Ring M&TE Ser. No.

Cal. Due Date 4.4.20 As-Left Shaft End Play 4

0.008 to 0.010" l

Dimension 1/s" 4.4.29.b.

As-Left Coupling Hub Separation (1

t 3

/16 o /16")

~

With Motor at Center of End Play

' 4.4.24.j.

Upper Casing Torque 120 ft lbs (110 to 130 ft lbs) ft lbs i

M&TE Ser. No.

l Cal. Due Date MP 720.11 -

i

n,

,S - _M. ~

Level of Use Rev 5-GeneraI STOP'

'THINK

' ACT' REVtEW t.f:$

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%J Attac ment s-Inspection Data Record e

(Sheet 4 of 4) l VERIFIED e

. STEP NO.

INSPECTION

' ACCEI'rANCE INSPECTION PERFORMED i

CRITERIA RESULTS.

BY/ DATE BY/ DATE 4

4.4.29.f.

As-Left Motor-to-Pump Alignment:

Angular (Bee-To-Ibce)

TIR < 0.002" TIR i

Parallel (Rim-To-Rim)

TIR 6 0.004" TIR

, M&TE Ser. No.

Cal. Duc Date e

M&TE Ser. No.

Col. Due Date COMMENTS -

I' i

J011 SUPERVISOR -

DATE I

MP 720.11 i

1 Level of Use g

7-Rev. 5 General

. s tw 61 of 61 c

,4 c

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