ML20148G780

Rev 2 to MP 723.5, Allis-Chalmers Radwaste Pumps Model FB3A

ML20148G780
Person / Time
Site:	Millstone
Issue date:	05/30/1997
From:	Arcari P NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20148F977	List: ML20148F973 ML20148G780 ML20148G792 ML20148G800 ML20148G804
References
MP-723.5, NUDOCS 9706060150
Download: ML20148G780 (33)

Text

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MILLSTONE NUCLEAR POWER STATION l

l MAINTENANCE PROCEDURE 1

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Allis-Chalmers Radwaste Pumps Model FB3A MP 723.5 l

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Q Maintenance Procedure Allis-Chalmers Radwaste Pumps Model FB3A-t TABLE OF CONTENTS

1. P U R P O S E . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 l

2. P RE REQ UI S ITES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  ;

3. P R E CAUTI O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 l

4. I N STR U CTI O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 i 4.1 P u m p R e m oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 Pump Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  !

4.3 Pump Cleaning and Inspection . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 10  !

4.4 P u m p Re p ai r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 j 4.5 Pump Asse mbly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . - 14 I 4.6 Pump Inst allation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 ) '

4.7 Operational Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 J 4.8 Mechanical Seal Removal And Replacement . . . . . . . . . . ...... 24

5. R EVI EW AN D SI G N - O FF . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 -

6. R E FE R EN CES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  ;

7. S UMM ARY OF CHANG ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 )

ATTACHMENTS AND FORMS Attachment 1, " Impeller-Casing Assembly" . . . . . . . . . . . . . . . . . . . . . . . 30 l

Attachment 2, " Bearing-Shaft Assembly" . . . . . . . . . . . . . . . . . . . . . . . . . 31 Attachment 3, " Mechanical Seal Assembly" . . . . . . . . . . . . . . . . . . . . . . . . 32 l '

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i 7% 1. PURPOSE

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1.1 Objective The objective of this procedure is to provide instructions for repairing Allis-Chalmers model FB3A pumps.

1.2 Discussion This procedure provides guidance for repairing Allis-Chalmers model FB3A radwaste pumps. Each of these pumps is a single-stage, single-suction type pump with an enclosed impeller.

The procedure includes instructions for pump overhaul and instructions for specific maintenance tasks. Overhaul instructions cover pump removal, disassembly, cleaning, inspection, repair, assembly, installation, and operational checkout, j Specific maintenance task instructions cover mechanical seal removal and replacement. This task can be performed independent of a pump overhaul .

and without disconnecting discharge piping. I l

Because the fluid pumped is radioactive waste, care must be given to job ,

(m planning and execution to keep exposure to radiation ALARA. l v

1.3 Applicability 1.3.1 This procedure applies to the following PMMS local ids:

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M6-8A, " Waste Sample Pump A"

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M6-8B," Waste Sample Pump B" M6-23, " Floor Drain Collector Pump"

• M6-26A, " Waste Collector Pump"

. M6-26B," Floor Drain Collector Pump B"

= M6-45, " Waste Surge Pump"

2. PREREOUISITES i

2.1 General p-Lj 2.1.1 A Radiation Work Permit has been issued as necessary.

Level of Use STOP THINK ' ^ ACT

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.- 2.2 - Documents 3

2.2.1 - MP 791.0 (Att), " Liquid Radwaste (312)" l l .

2.2.2 C MP 710A," Horizontal Shaft Alignment"  !

i 2.3 Measuring and Test Equipment (M&TE) l t-2.3.1 All M&TE has been calibrated in accordance with WC 8,  !

" Control and Calibration of Measuring and Test Equipment" and l l the calibration is current. t

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2.3.2 Dial indicator with 1-inch travel and minimum accuracy of  ;

, 0.0005 inch, such as OA-1504 1

2.3.3 Inside micrometer with a range of 4 to 5 inches and an accuracy  ;

of 0.0005 inch, such as MPS-51 i l

2.3.4 Outside micrometer with a range of 4 tc> 5 inches and an accuracy  !

of 0.0005 inch, such as MPS-44 I i

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i 2.4 Tools and Consumables  !

2.4.1 Tools  !

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t i Bearing puller >

Drain pan (contaminated oil)

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• Feeler gage

• Fine-grit abrasive stone  :

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• Flexible packing hooks  :

1 Freezer, dry ice, or liquid nitrogen Grinder or hacksaw blade i Mechanic's standard tool kit

• "NO OII" tag l Packing pushing tool Scribe or razor blade '

. Two5 /8-inch jacking bolts approximately 3 inches long  ;

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• V-blocks i

2.4.2 Equipment .

Induction bearing heater or bearing press l

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2.4.3 Spare Parts l

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• Adjusting shims  !

Bearing housing 0-ring 'l l

• Bearmgs l

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• Cover gasket

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• End cover gasket

• Impeller .l

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• Impeller nut gasket i l

Mechanical seal (applicable on M6-26A, M6-26B, and l M6-23) f l

Packing (applicable on M6-45, M6-8A, and M6-8B) l

• Wear rings i

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• Sealing rings Shaft sleeve gasket 2.4.4 Consumables

• Approved antiseize lubricant such as nuclear-grade Never Seez Approved cleaning solution such as Polywater Hydrafoam 2020

• Approved dry-film lubricant such as Neolube 1

• Approved lubricant such as Versilube i

a Low-lint cloth  !

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• Pump lubricant l

• Approved thread sealant such as PRI-101N b d MP 723.5 Level of Use rgiop v g g % gr gggg  !

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77 2.5. Responsibilities

.y 2.5.1 Operations Depertment is responsible for filling, venting, and runnmg pump, 2.6 Definitions 2.6.1 DE-MAGNETIZE-To deprive of magnetic properties. i i

3. PRECAUTIONS 3.1 Match mark disassembled components as necessary to aid in reassembly.

Do not match mark delicate parts or critical mating surfaces.

3.2 Stuffing box packing contains asbestos and should be handled in {

accordance with U1 WC 1 (Att), " Control of Asbestos Containing l Materials." l I

3.3 Ensure all consumables to be used in or on power plant components are controlled in accordance with CC 1, " Control of Chemical Consumable Products."

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I n 4. INSTRUCTIONS

-Q j NOTE Sections 4.1 through 4.7 provide instructions for overhauling the pump. l Section 4.8provides instructions for replacing the mechanical seal ,

independent of a pump overhaul. I 4.1 Pump Removal 4.1.1 UNCOUPLE pump from motor, and REMOVE coupling spacer. [

4.1.2 REMOVE motor hold-down bolts. l 4.1.3 MOVE motor to provide access for removing pump frame  !

assembly.  ;

4.1.4 Refer To Attachment 1, and REMOVE casing drain plug (23),

and DRAIN pump. I 4.1.5 Refer To Attachment 2, and PLACE drain pan beneath oil drain plug (23).

C 4.1.6 REMOVE oil drain plug (23), and DRAIN oil from frame (16)  ;

into drain pan. l 4.1.7 HANG "NO OIL" tag on pump. I I

4.1.8 DISCONNECT stuffing box coolant piping. I 4.1.9 DISCONNECT all other special piping including the following:

. Gages

. Vents

. Drain lines 4.1.10 DISCONNECT pump suction piping.

4.1.11 DISCONNECT pump discharge piping.

4.1.12 REMDVE pump hold-down bolts. 1 O

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4.1.13_ REMOVE pump shims as necessary.

C 4.1.14 MOVE pump to provide access to suction and discharge flanges.

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4.1.15 COVER suction and discharge pipe openings.

f p 4.1.16 E necessary, TRANSFER pump to controlled work area.

f 4.2 Pump Disassembly I i

4.2.1 Refer To Attachment 1, and REMOVE suction cover bolts (1). i 4.2.2 REMOVE suction cover (2) and cover gasket (4).

i 4.2.3 Using a rod inserted between impeller vanes, HOLD impeller (7)  ;

in place, and REMOVE impeller nut (5) by rotating nut counterclockwise.

t 4.2.4 REMOVE impeller nut gasket (6).

i r i 4.2.5 REMOVE pump coupling half from shaft.  !

4.2.6 REMOVE casing bolts (13).

J 4.2.7 PERFORM applicable action:

E pump has packing, remove gland bolts (12) and gland (18).

! i E pump has mechanical seal, remove g'.and bolts (12).

C AUTIO N As frame and casing separate, impeller will slide off shaft. To prevent damage to impeller, make sure impeller is held securely when jacking frame from casing.

5 4.2.8 INSTALL two /8-inch jacking bolts into threaded holes in casing (14), and while holding impeller securely, JACK frame from casmg.

l 4.2.9 REMOVE impeller (7) and impeller key (8).

l 4.2.10 REMOVE shaft sleeve gasket (9).

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Pump packing contains asbestos. To avoid injury to must be handled in accordance with U1 WC 1 (Att)

' " Control personnel, of Asbestos packing ;

Containing Materials."

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4.2.11 IE pump has packing, REMOVE packing and seal cage (17).

4.2.12 IE pump has mechanical seal, Refer To Attachment 3, and I REMOVE mechanical seal as follows:

a. LOOSEN set screws on mechanical seal rotating face,

b. REMOVE mechanical seal rotating face.

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c. REMOVE mechanical seal stationary face. l 4.2.13 Refer To Attachment 1, and REMOVE gland (18).

4.2.14 REMOVE shaft sleeve (21). )

O V 4.2.15 REMOVE sleeve key (19).

l 4.2.16 Refer To Attachment 2, and MATCH MARK deflector (2) and bearing end cover (4).

4.2.17 LOOSEN deflector set screw (1).

1 4.2.18 REMOVE deflector (2).

I 4.2.19 REMOVE end cover bolts (3). )

4.2.20 REMOVE bearing end cover (4) and end cover gasket (6).

4.2.21 REMOVE sealing ring (5). l 4.2.22 MATCH MARK bearing housing (11) and frame (16).

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! 4.2.23 REMOVE bearing housing bolts (7) and adjusting shims (12).

4.2.24 With outboard end facing up, PLACE frame assembly on end.

! 4.2.25 PLACE frame assembly on end, 1 O

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i C AUTION  :

To prevent damage to oil rings and retaining clips, use caution when  !

removing shaft assembly from frame.  ;

4.2.26 LIFT shaft assembly from frame.

4.2.27 LOOSEN nuts (21) securing oil ring retaining clips (18) to stud (17).

4.2.28- LOOSEN nut (21) securing stud (17) to bearing retaining ring (10). l

{ 4.2.29 REMOVE stud (17) and oil ring retaining clips (18).

F 4.2.30 REMOVE oil rings (19).  :

4.2.31 REMOVE bearing retaining ring screws (9).

4.2.32 REMOVE bearing retaining ring (10).

i 4.2.33 Using a small blunt chisel, BEND retaining lockwasher (14)

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tab (s) away from bearing retaining nut (13). (

4.2.34 REMOVE bearing retaining nut (13) from shaft.

4.2.35 Using a bearing puller or press, REMOVE bearings from shaft.

4.3 Pump Cleaning and Inspection NOTE

1. When cleaning pump components, particular attention should be paid to cleaning mac bined surfaces, gasket joints, stuffing box cavity, and sealing liquid inlet.

2. Structural damage and defects include breakage, cracks, deformation, distortion, corrosion, pitting, scoring, scratches, crosion, galling, and indicatons of missFgnment.

i 4.3.1 Using an approved cleaning solvent, CI.EAN all pump components.

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

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4.3.3 - IE inspection results are not satisfactory, REPAIR or REPLACE  !

applicable component (s).  :

i 4.3.4 INSPECT shaft runout as follows:  ;

a. MOUNT shaft in V-blocks.

b. Using a dial indicator, MEASURE shaft total indicator runout (TIR) at the following locations:

Impeller l 1

• Stuffing box

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Inboard bearing e

Outboard bearing

c. IE shaft runout is greater than 0.001 inch, REPAIR or ,

REPLACE shaft.

d. RECORD as-left TIR values onto AWO. i 4.3.5 Refer To Attachment 1, and INSPECT impeller-wear ring-l clearances at the following locations: .

Impeller hub-to-casing wear ring

. Impeller hub (inboard end)-to suction cover wear ring 4.3.6 IE either impeller-wear ring clearance is greater than 0.024 inch, Refer To Section 4.4, and REPLACE wear ring (15 or 3) as applicable.

4.3.7 RECORD as-left clearance values onto AWO.

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i 4.4 Pump Repair V

NOTE Bearings, mechanical seal, packing, gaskets, wear rings, and sealing rings should be replaced whenever pump is overhauled.  !

i 4.4.1 Refer To Attachment 1, and REPLACE wear rings as follows:

1 l a. CUT or GRIND wear ring (3) from suction cover (2).

b. Using an approved cleaning solvent, CLEAN wear ring (3) seating surface.

c. REMOVE any burrs from wear ring seating surface.

d. MACHINE wear ring as required to achieve an interference fit of approximately 0.004 inch.

e. CHILL wear ring.

f. PRESS new wear ring (3) into suction cover (2).

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g. MEASURE wear ring-impeller clearance.

l h. IE wear ring-impeller clearance is less than 0.012 inch, MACHINE wear ring as required to provide proper l clearance.

i. RECORD as-left clearance value onto AWO.

! j. CUT or GRIND wpar ring (15) from casing (14).

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k. Using an approved cleaning solvent, CLEAN wear ring (15) seating surface.

1. REMOVE any burrs from wear ring seating surface.

l m. MACHINE wear ring as required to achieve an interference fit of approximately 0.004 inch.

n. CHILL wear ring.

o. PRESS new wear ring (15) into casing (14).

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j- , p. MEASURE wear ring-impeller clearance.

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q. IE wear ring-impeller clearance is less than 0.012 inch, MACHINE wear ring as required to provide proper clearance.

r. RECORD as-left clearance value onto AWO.

4.4.2 Using a fine grit abrasive stone, REMOVE the following from all gasket sealing surfaces:

a Burrs a Rust Raised surfaces l

= Dirt i

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• Paint ,

l 4.4.3 IE shaft sleeve surface is grooved, REMOVE grooves by l polishing. l

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\s 4.4.4 IE shaft sleeve grooves cannot be removed by polishing, REPLACE shaft sleeve.

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MP 723.5 Level of Use ~ STOP' THINK ' " ACT' ' REVIEW Rev.2 General .

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4.5 Pump Assembly NOTE l

1. Bearings, mechanical seal, packing, gaskets, wear rings, and sealing rings should be replaced whenever pump is overhauled.

2. Bearings can be installed using a bearing press or an induction bearing heater.

3. Inboard and outboard bearings are not interchangeable.

l 4.5.1 INSTALL bearings onto shaft as follows:

l l a. IE using a bearing press, Refer To Attachment 2, and PERFORM the following:

i l 1) MOUNT outboard bearing and shaft in bearing press.

2) PRESS shaft into outboard bearing, and ENSURE bearing inner race makes firm, even contact with shaft i shoulder.

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3) INSTALL bearing retaining ring (10) onto shaft.

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4) MOUNT inboard hearing and shaft in bearing press. ,

5) PRESS shaft into inboard bearing, and ENSURE bearing ,

inner race makes firm, even contact with shaft shoulder.

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b. IE using an induction bearing heater, Refer To Attachment 2, b

y and PERFORM the following: ,

CAUTION l To prevent damage to bearing during heating process, bearing temperature i must not exceed .50 E

1) HEAT outboard bearing to 200 F, and ENSURE

temperature does not exceed 250 E i

2) DE-MAGNETIZE bearing.

3) INSTALL bearing onto shaft, and HOLD bearing firmly against shaft shoulder until bearing cools.

4) INSTALL bearing retaining ring (10) onto shaft.

l C A UTIO N To prevent damage to bearing during heating process, bearing temperature must not exceed 250 E

5) HEATinboard bearing to 200 F, and ENSURE temperature does not exceed 250 E

6) DE-MAGNETIZE bearing.

! 7) INSTALL bearing onto shaft, and HOLD bearing firmly '

I against shaft shoulder until bearing cools.

4.5.2 INSTALL retaining lockwasher (14) onto shaft (15).

4.5.3 INSTALL and TIGHTEN bearing retaining nut (13) onto shaft (15).

l 4.5.4 Using a small blunt chisel, BEND retaining lockwasher (14) tab (s) over bearing retaining nut (13).

4.5.5 With seal lip of sealing ring facing outboard, INSTALL outboard l sealing ring (5) into bearing housing (11).

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' q 4.5.6 With seal lip of sealing ring facing inboard, INSTALL inboard Q sealing ring (5) into bearing end cover (4).

j 4.5.7 POSITION bearing housing (11) onto shaft (15).

f 4.5.8 - INSTALL and TIOHTEN retaining ring screws (9).-

t 4.5.9 INSTALL the following onto outboard end of stud (17):

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a. Nut (21) j

b. Lockwasher (22) l

c. Oil ring retaining clip (18) i

d. Lockwasher (22) {

e. Nut (21)  :

l f. Nut (21)

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g. Lockwasher (22) 4.5.10 INSTALL the following onto inboard end of stud (17):

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l a. Nut (21)

b. I Lockwasher (22)

c. Oil ring retaining clip (18) .

l d. Lockwasher (22).

e. Nut (21) 4.5.11 THREAD outboard end of stud (17) into bearing retaining ring (10).

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in U NOTE must be positioned betwe The retainin outboard n oil ring (19) board oil retaining p (18 . The ring ch,en the bearing inboard oil ring ) g (10) and outmust be positioned between the m, board bean inboard retaining ring clip (18).

4.5.12 INSTALL inboard and outboard oil rings (19) onto shaft (15).

4.5.13 TIGHTEN nut (21) securing stud (17) to bearing retaining ring (10).

4.5.14' TIGHTEN nuts (21) securing oil ring retaining clips (18) to stud (17).

4.5.15 Using an approved lubricant, LUBRICATE bearing housing 0-ring (20).

4.5.16 INSTALL bearing housing 0-ring (20) onto bearing housing (11).

, 4.5.17 INSTALL shaft-bearing assembly into outboard end of frame (16).

4.5.18 INSTALL and TIGHTEN bearing housing bolts (7).

4.5.19 INSTALL end cover gasket (6) onto bearing end cover (4).

4.5.20 POSITION bearing end cover (4) onto frame (16).

'4.5.21 INSTALL and TIGHTEN end cover bolts (3).

l l 4.5.22 POSITION deflector (2) onto shaft (15).

NOTE l Deflector set screw (1) must not be tightened until impeller clearance is

measured and,if necessary, adjusted l

L 4.5.23 INSTALL, but do not tighten, deflector set screw (1).

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l l C NOTE ,

e The impeller clearance check involves performing a pump trial assembly, measurmg the impeller-shaft thrust dimension, and calculating the shim dimension required to center the impeller-shaft assembly within its total  ;

thrust dimension.  !

t 4.5.24 CHECK impeller clearance as follows:

a. Refer To Attachment 1, and INSTALL sleeve key (19) onto  ;

shaft.

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b. INSTALL shaft sleeve (21). <

c. ALIGN frame-shaft assembly with casing (14). l l

d. INSTALL and TIGHTEN two casing bolts (13) 180 from each other.

e. INSTALL shaft sleeve gasket (9),

f. INSTALL impeller key (8).

C: g. With curved side of impeller facing inboard, INSTALL impeller (7).

h. INSTALL impeller nut gasket (6).

i. INSTALL and TIGHTEN impeller nut (5). )!

j. ALIGN suction cover (2) with casing (14). I

k. Using a diagonal sequence, INSTALL and TIGHTEN four  !

suction cover bolts (1) 90 from each other.

1. REMOVE air cock (10). l

m. REMOVE plug adjacent to air cock (10).

n. Refer To Attachment 2, and LOOSEN bearing housing bolts (7) approximately 1 /2 inch,

o. PUSH shaft-impeller assembly inboard as far as possible.

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g p. PULL shaft-impeller assembly outboard until impeller  ;

y contacts casing.

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q. Using a feeler gage, MEASURE gap between bearing i housing (11) and frame (16), and RECORD measurement as l Dimension "A."  ;

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r. DIVIDE Dimension "A" by 2 to obtain bearing housing shim requirement.

l l 4.5.25 ADJUST impeller clearance as follows:

NOTE The impeller adjustment 1rocedure involves shimming the bearing housing to center the impeller wit 1in its total thrust dimension and within casing. ,

! a. INSTALL adjusting shims (12) of the thickness calculated in step 4.5.24.r. between bearing housing (11) and frame (16).

b. TIGHTEN bearing housing bolts (7).

! ('M c. Refer To Attachment 1, and,looking into casing through port g j adjacent to air cock (10), OBSERVE position ofimpeller (7).

d. IE impeller is not centered within casing, INSTALL or REMOVE adjusting shims from between bearing housing and frame as required.

e. ROTATE shaft by hand, and ENSURE impeller does not rub against casing.

4.5.26 Refer To Attachment 2, and SET deflector (2) to obtain1 /m-inch clearance between deflector and bearing end cover (4).

4.5.27 TIGHTEN deflector set screw (1).

l I.

!O ' '

MP 723.5 Level of Use 'stoP tids ~T^cF 'REVi$d Rey, 2 General r , , .

e ,

190f32

l p

l Q STOP WARNING STOP ,

i l Pump packing contains asbestos. To avoid injury to must be handled in accordance with U1 WC 1 (Att)ofpersonnel,

, "Control Asbestos packing j

Containing Materials."

1  !

NOTE Pumps M6-8A, M6-8B, and M6-45 use packing. Pumps M6-23, M6-26A, and M6-26B use mechanical seals. ,

i 4.5.28 IE pump contains packing, PERFORM the following:

l

a. INSTALL packing and seal cage (17). l

b. INSTALL gland (18).

c. INSTALL and TIGHTEN gland bolts (12) snug.

C AUTION To avoid damage to p, ump shaft from overheating, seal cage (17) must be aligned with seal liquid mlet after packing is compressed.

1

d. CHECK alignment of seal cage (17) with seal liquid inlet.

e. IE seal cage is not aligned with seal liquid inlet, INSTALL or REMOVE packing rings as required to align seal cage with sealliquid inlet. '

4.5.29 IE pump contains a mechanical seal, INSTALL mechanical seal as follows:

a. Refer To Attachment 1, and REMOVE suction cover  ;

bolts (1). l l b. REMOVE suction cover (2).

c. Using a razor blade or scribe, SCRIBE mark on shaft sleeve l (21) at point where shaft sleeve enters casing (14).  ;

O Level of Use sToe" "TbNW ~~ CT REV EW ge ,. 2 General ,

, p> p4 20 of 32 ,

I

jq d. REMOVE impeller nut (5).

V i

e. REMOVE impeller nut gasket (6).  ;

f. REMOVE impeller (7).

g. REMOVE impeller key (8). }

i

h. REMOVE casing bolts (13). t e

i. SEPARATE frame from casing (14). l

j. REMOVE shaft sleeve gasket (9).

i

k. REMOVE shaft sleeve (21). l

1. Refer To Attachment 3, and, using a razor blade or scribe, l 9

SCRIBE mark on shaft sleeve 1 /16-inch inboard ofline l scribed in step 4.5.29.c.

I

m. Using an approved lubricant, COAT shaft sleeve outer surface.

{

n. With back edge of seal facing inboard, POSITION 1 mechanical seal rotating face onto shaft sleeve, I

o. ALIGN mechanical seal cage assembly back edge with scribe mark scribed on shaft sleeve in step 4.5.29.1.

p. TIGHTEN mechanical seal rotating face set screws. j i

q. REMOVE preload clips from mechanical seal rotating face. l

r. With teflon gasket facing outboard, INSTALL mechanical  :

seal stationary face onto shaft sleeve. l

s. POSITION gland onto shaft sleeve.

t. Refer To Attachment 1, and INSTALL sleeve key (19) onto )

shaft. l l

u. INSTALL shaft sleeve, with gland and mechanical seal, onto i shaft, and firmly SEAT outboard end of shaft sleeve against j shaft shoulder.

v. ALIGN casing (14) with frame.

,' J t s i t s c .% MP 723.5 Level of Use wgoge %gi<7- gey ~,igvigvy Rev. 2 General y9  ?% // s. b* 21 of 32 l

l- ,

t

w. Using a diagonal sequence, INSTALL and TIGHTEN casing 3 (

bolts (13).

! x. INSTALL shaft sleeve gasket (9).

y. INSTALLimpeller key (8).

z. With curved side of impeller facing inboard, INSTALL i impeller (7). I aa. INSTALLimpeller nut gasket (6).

ab. INSTALL and TIGHTEN impeller nut (5).

ac. INSTALL cover gasket (4) onto suction cove.r (2).

ad. ALIGN suction ccver (2) with casing (14).

ae. Using a diagonaliequence, INSTALL and TIGHTEN suction cover bolts (1).

af. ALIGN gland (18) with outboard end of casing (14).

ag. INSTALL and TIGHTEN gland bolts (12).

4.5.30 APPLY approved thread sealant to threads of plug adjacent to air cock (10).

l 4.5.31 INSTALL and TIGHTEN plug adjacent to air cock (10).

l l 4.5.32 APPLY approved thread sealant to threads of air cock (10).

4.5.33 INSTALL and TIGHTEN air cock (10).

l 4.5.34 APPLY approved thread sealant to threads of casing drain  !

plug (23).  !

4.5.35 INSTALL and TIGHTEN casing drain plug (23).

4.5.36 INSTALL key into outboard end of shaft.

4.5.37 INSTALL pump half of coupling onto shaft.

l 3

4.6 Pump Installation 4.6.1 IE necessary, TRANSFER pump to field location.

[ Level of Use 's V 'ibP "hr "sbiWT Rev. 2 eneral p4 g,N( p jy ' 4 220f32

4.6.2 Refer To Attachment 2, and APPLY approved thread sealant to  !

l threads of oil drain plug (23).  !

- 4.6.3 , INSTALL and TIGHTEN oil drain plug (23).

4.6.4 Refer to MP 791.0 (Att), " Liquid Radwaste (312)," and l LUBRICATE pump.

l 4.6.5 REMOVE "NO OII" tag from pump.

4.6.6 CONNECT pump to suction piping.

4.6.7 CONNECT pump to discharge piping. l i

4.6.8 CONNECT stuffing box coolant piping.  :

I 4.6.9 CONNECT all other special piping including the following: i t

• Gages  !

l

• Vents  !

l

• Drain imes 1

. (Ul .

4.6.10 INSTALL and TIGHTEN pump hold-down bolts snug.

I i

4.6.11 ROTATE shaft by hand, and ENSURE pump turns freely without i binding. l 4.6.12 REFER to C MP 710A," Horizontal Shaft Alignment," and ALIGN motor and pump to the following tolerances:

• Parallel alignment within 0.004 inch TIR on rim Angular alignment within 0.002 inch TIR on face 4.6.13 TIGHTEN motor hold-down bolts.

4.6.14 INSTALL coupling spacer, and COUPLE pump to motor. ,

1 i

i' s - >

^

Level of Use cmp- vygh7 ehy5kg Re ' 2 1

General A pg p% pq 23 0f 32 l

4.7 Operational Checkout

.v NOTE i

Leakage through stuffing box is acceptable at startup.  :

t

, 4.7.1 REQUEST Operations Department fill, vent, and run pump.

l 4.7.2 CHECK alljoints and seals for leaks. ,

i

! 4.7.3 IE pump contains packing, MONITOR and ADJUST stuffing box i leak rate until a leak rate of 40 to 60 drops per minute is i

' achieved.

l 4.8 Mechanical Seal Removal and Replacement  ;

i

! NOTE The following mechanical seal removal and replacement instructions

. should be used when the pump will not be overhauled.

p ,

V 4.8.1 REMOVE mechanical seal as follows:  ;

a. UNCOUPLE pump from motor, and REMOVE coupling spacer. s

b. REMOVE motor hold-down bolts. l

c. MOVE motor to provide access to pump frame assembly.

d. Refer To Attachment 1, and REMOVE casing drain plug (23), and DRAIN pump.

l e. DISCONNECT stuffing box coolant piping.

f. DISCONNECT pump suction piping as required to allow for suction cover removal.

l g. REMOVE pump hold-down bolts.

L

! h. REMOVE suction cover bolts (1).

p i. REMOVE suction cover (2) and cover gasket (4).

y s .

Level of Use sTof " THINK '

' R$ IE6 l -]ACT Rev. 2 General i

• r% f '

e '

24 of 32

l i

i e

l-1 l j. COVER opening of suction piping.

l I

k. Using a rod inserted between impeller vanes, HOLD impeller (7) in place, and REMOVE impeller nut (5) by

! rotating nut counterclockwise.

i 1. REMOVE impeller nut gasket (6).

m. REMOVE casing bolts (13).

n. REMOVE gland bolts (12).

C AUTION As frame and casing separate, impeller will slide off shaft. To prevent damage to impeller, make sure impeller is held securely when jacking

, frame from casing.

! o. INSTALL two @g-inch jacking bolts into threaded holes in casing (14), and while holding impeller securely, JACK frame from casing.

O V p. REMOVE impeller (7) and impeller key (8).

q. REMOVE shaft sleeve gasket (9).

r. Refer To Attachment 3, and, using a razor blade or scribe, I SCRIBE mark on shaft sleeve (21) at outbcard edge of I mechanical seal rotating face.  !

l

s. LOOSEN set screws on mechanical seal rotating face.

t. REMOVE mechanical seal rotating face. j

u. REMOVE mechanical seal stationary face.

v. REMOVE gland.

w. REMOVE shaft sleeve (21).

l x. REMOVE sleeve key (19). l l

l A

IU Level of Use k 8 MP 723~5 zgToP "isN F '"?AcTP 'WeviivT Rev. 2 General /* 4 M e 4 /m 25 0f 32

gm 4.8.2 INSTALL mechanical seal as follows:

i

a. Refer To Attachment 3, and, using a razor blade or scribe, 9

SCRIBE mark on shaft sleeve 1 /16-inch inboard of line scribed in step 4.8.1.r.

b. Using an approved lubricant, COAT shaft sleeve outer surface.

c. With back edge of seal facing inboard, POSITION mechanical seal rotating face onto shaft sleeve.

d. ALIGN mechanical seal cage assembly back edge with scribe mark scribed on shaft sleeve in step 4.5.29.1.

c. TIGHTEN mechanical seal rotating face set screws.

f. REMOVE preload clips from mechanical seal rotating face.

g. With teflon gasket facing outboard, INSTALL mechanical seal stationary face onto shaft sleeve.

h. POSITION gland onto shaft sleeve.

'd i. Refer To Attachment 1, and INSTALL sleeve key (19) onto shaft.

j. INSTALL shaft sleeve, with gland and mechanical seal, onto shaft, and firmly SEAT outboard end of shaft sleeve against shaft shoulder.

k. ALIGN casing (14) with frame.

1. Using a diagonal sequence, INSTALL and TIGHTEN casing bolts (13).

m. INSTALL shaft sleeve gasket (9).

n. INSTALLimpeller key (8).

o. With curved side of impeller facing inboard, INSTALL l impeller (7).

p. INSTALL impeller nut gasket (6).

(m q. INSTALL and TIGHTEN impeller nut (5).

V MP 723.5 Level of Use STO'P THINK ' EACT REVIEN Rey, 2 General '

26 of 32

fm r. INSTALL cover gasket (4) onto suction cover (2).

t V

s. ALIGN suction cover (2) with casing (14).

t. Using a diagonal sequence, INSTALL and TIGHTEN suction cover bolts (1).

u. ALIGN gland (18) with outboard end of casing (14).

v. INSTALL and TIGHTEN gland bolts (12).

w. CONNECT stuffm' g box coolant piping.

x. APPLY approved thread scalant to threads of casing drain plug (23).

y. INSTALL and TIGHTEN casing drain plug (23).

z. INSTALL and TIGHTEN pump hold-down bolts snug.

aa. ROTATE shaft by hand, and ENSURE pump turns freely without binding.

ab. ALIGN motor and pump to the following tolerances:

(vl

• Parallel alignment within 0.004 inch TIR on rim

. Angular alignment within 0.002 inch TIR on face ac. TIGHTEN motor hold-down bolts.

ad. INSTALL coupling spacer, and COUPLE pump to motor, ae. Go To Section 4.7, and PERFORM Operational Checkout.

l l

l l

l g~

[

~

,' MP 723.5 Level of Use STOP' ' THINK IACT' REVIEW Rev.2

General , s 27 of 32

L l-l

_ p. 5. REVIEW AND SIGN-OFF l lQ l

5.1 The review and sign-off of the AWO satisfies the review and sign-off of this procedure.

6. REFERENCES I t

6.1 NNECO Accident Prevention Manual 6.2 Drawings l 6.2.1 NUSCo Drawing 25202-29041 sheet 3," Waste Collector Pump i M6-26"  ;

i 6.2.2 NUSCo Drawing 25202-29041 sheet 5," Waste Surge Pump 1 M6-45" 6.2.3 NUSCo Drawing 25202-29041 sheet 6," Feed Collector Pump f M6-27" '

! 6.2.4 NUSCo Drawing 25202-29041 sheet 7," Waste Neutralize Pump  !

M6-23" l

O 6.2.5 NUSCo Drawing 25202-29041 sheet 8," Waste Sample Pump D: M6-8A and M6-8B" 6.3 Vendor Manuals i

-6.3.1 Document No. 25202-001-002A, " Installation, Operation, and l Maintenance Manual for Allis-Chalmers Model F-3 Pumps" 6.3.2 Form No. 741C-R," Wood's Sure-Flex Couplings Installation Instructions" 6.4 Administrative Procedures l 6.4.1 CC 1," Control of Chemical Consumable Products" 6.4.2 WC 8," Control and Calibration of Measuring and Test Equipment" 6.4.3 U1 WC 1, " Unit 1 Work Control Process" l

l 6.5 Maintenance Procedures 6.5.1 MP 791.0," Plant Component Lubri ation"

! Level of Use ykp r 7gh y ~nghigpr fe(.72 General yq -3 /% 4% 28 of 32 l

6.5.2 C MP 710A," Horizontal Shaft Alignment" O 6.6 Other Documents 6.6.1 Maintenance Department Main Purchase Order (MPO) File

1. 106931

7.

SUMMARY

OF CHANGES 7.1 Incorporated previously approved interim changes as follows:

7.1.1 Change 1 added Waste Sample Pumps M6-8A and M6-8B to the applicability section of the procedure. Updated illustrations and text to indicate which pumps contain packings and which pumps contain mechanical seals.

7.1.2 Change 2 removed lubricant types and quantities, and added reference to MP 791.0, Plant Component Lubrication."

7.2 Incorporated various editorial changes that were made as a result of Biennial Review and updated references.

N j

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1.

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k }

l Level of Use Ml gr f y r f[ p f ;gpf hip gey ~

General pq pg pq pg 29,f 32

)

Attachinent 1 Ilupeller-Casing Assembly

.ym (Sheet 1 of 1) l b 22 OUTilOARD INBOARD g3 10 { 7 l 4 6

_. ._.. . g g. .

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y 69 8 j } eq s

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x p 1 l l 23 \

21 18 16 17 9 15 14 1 2 ITE51# DESCRII"flON ITEM # DESCRIlvrION l

1 SUCTION COVER llOLT 12 GLAND llOLT -

2 SUCTION COVER 13 CASING llOLT 3 WEAR RING 14 CASING 4 COVER GASKET 15 WEAR RING )

5 IMPELLER NUT 16 PACKING (SEE NOTE) 6 IMPELLER NUT GASKET 17 SEAL CAGE 7 IMPELLER 18 GIAND 8 IMPELLER KEY 19 SLEEVE KEY 9 SilAIT SLEEVE GASKET 21 SIIAIT SLEEVE 10 AIR COCK 22 DEFLECTOR 11 INTERNAL SEAL VALVE 23 DRAIN PLUG l NOTE: M6-26A, M6-26B, AND M6-23 USE MECIIANICAL SEALS.

l M6-8A, M6-811, AND M6-45 USE PACKING.

l

O l

/ MP 723.5 Level of Use sToe"

' THNK' ACT ' REVIEW gey, 2 General v - -

30 or 32

Attachmcnt 2 I Bearing-Shaft Assembly 73 (Sheet 1 of 1)

OUTBOARD INilOARD 20 21 22 18 15 17 16 18 8 3

\ DV I/ / / / e g 2 I NhW/ 7

? M,

! k V 13 "5 l k l 14 I9' \

p\

\ 's x x4 l 11

\ \ \ \

12 10 23 9 19 19 6 4 5 (S

b ITEM # DESCRil"FION ITEM # DESCRII'rION 1 DEFLECTOR SET SCREW 13 IIEARING RETAINING NUT 2 DEFLECTOR 14 RETAINING LOCIGVASilER 3 END COVER llOLT 15 SilAIT i

4 IIEARING END COVER 16 FRAME 5 SEALING RING 17 STUD 6 END COVER GASKET 18 OIL RING RETAINING CLIP 7 IIEARING IlOUSING BOLT 19 OIL RING 8 BEARING 20 BEARING llOUSING O-RING 9 RETAINING RING SCREW 21 NUT 10 BEARING RETAINING RING 22 LOCIOVASIIER 11 llEARING llOUSING 23 OIL DRAIN PLUG j 12 ADJUSTING SillMS 4

p, MP 723.5 Level of Use sToe" THINK-~ JAcT^ ' REVl5W" gey, 2 eneral / 31 of 32 l

I

l. Attachment 3 Mechanical Seal Assembly

__ (Sheet 1 of 1) l l

OUTBOARD [ 7 INilOARD STATIONARY FACE I

GLAND TEFLON l'ACKING STUFFING UOX GASKET GASKET I I

< l'h6 D if 3 I f SETSCREW

_s s, - r eMECIIANICAL SEAL

,[sL /' '" E CAGE ASSEMillX V ROTATING FACE (IIACK EDGE)

[ L==================================

I I

N - - - - - - - -

)

===========h==========

SIIAIT

/

SilA1:T SLEEVE NOTE M6-26A, M6-26B, AND M6-23 USE MECIIANICAL SEALS.

M6-8A, M6-8B, AND M6-45 USE PACKING.

l l i j I I I

'o  !

't"'

1 MP 723.5 r

Level of Use STOP"' THINK ACT REVIEW Rev.2 General .

32 w 32 1