ML20148G792

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Rev 2 to MP 723.6, Decontamination Solution Tank Drain Pump,Allis-Chalmers Model F4A1-416
ML20148G792
Person / Time
Site: Millstone Dominion icon.png
Issue date: 05/30/1997
From: Pernal J
NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20148F977 List:
References
MP-723.6, NUDOCS 9706060154
Download: ML20148G792 (28)
v • d • e


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MILLSTONE NUCLEAll POWElt STATION

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v MAINTENANCE PItOCEDURE Decontamination Solution Tank Drain Pump, Allis-Chalmers Model F4Al-416 MP 723.6 i Rev. 2 A,

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Approval: _

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PORC Mtg. No: ['07 085 Date: 5 2'2-97 Effective Date: Is- M-9 ~7 l

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v SME: J. Pernal I

Level of Use General _ _ .

9706060154 970530 PDR ADOCK 05000245 PDR P

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Millstone Unit 1 (J Maintenance Procedure .

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Decontamination Solution Tank Drain Pump, Allis-Chalmers Model l

l F4Al-416 ,

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TABLE OF CONTENTS  ;

! l l 1. PURPOSE....................................................2 l

2. PRE R EQ UI S ITES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 l 1

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l 3. P R ECAUTI O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  ;

l l 4. I N STR U CTI O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ,

4.1 P u m p Re m oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 J 4.2 Pu mp Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3 Pump Cleaning and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 )

4.4 P u m p Re p a i r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 l 4.5 Pu m p Asse mbly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.6 Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 ,

V 4.7 Operational Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  !

l 4.8 Mechanical Seal . Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5. R EV I EW AN D S I G N - O FF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 '
6. R E FE R EN C ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7. S UM M ARY OF CHANG ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 ATTACHMENTS AND FORMS Attachment 1, " Pump Assembly" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Attachment 2, " Mechanical Seal Assembly" . . . . . . . . . . . . . . . . . . . . . . . . 27 l

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i l i V, MP 723.6 Level of Use

! STOP THINK ACT REVIEW

! Rev. 2 I l eneral 1 lof27 1 l

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yy 1. PURPOSE [

1.1 Objective I

The objective of this procedure is to provide instructions for repairing  ;

Allis-Chalmers model F4Al-416 pump. '

1.2 Discussion  ;

1 This procedure provides guidance for repairing Allis-Chalmers model )

F4Al-416 pump. This pump is a 11 /2 x 1 x 6-inch, back-pullout, type i CSO centrifugal pump with an open-face impeller. l This procedure provides instructior.s for pump overhaul and instructions for replacing the mechanical seal. Overhaul instructions cover pump 3 removal, disassembly, cleaning and inspection, repair, assembly, installation, and operational checkout. Mechanical seal replacement -

instructions cover impeller clearance adjustment, mechanical seal r removal, component inspections, and mechanical seal replacement.

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

planning and execution to keep exposure to radiation ALARA. l 1

1.3 Applicability l

This procedure applies to PMMS local ID M6-33(PMP),

" Decontamination Solution Tank Drain Pump-Pump."

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2. PREREOUISITES i l

2.1 General i 2.1.1 A Radiation Work Permit has been issued as necessary.

2.2 Documents l

2.2.1 MP 791.0, (Att), " Liquid Radwaste (312)"

l 2.2.2 C MP 710A, " Horizontal Shaft Alignment" 2.3 Measuring and Test Equipment (M&TE)

! 2.3.1 All M&TE has been calibrated in accordance with WC 8,

" Control and Calibration of Measuring and Test Equipment" and

the calibration is current. i Level of Use sToP 'l HINK ACT REVIEW Rev.2  ;

General 2 of 27 i

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2.3.2 Dial inc'.icator with 0.200-inch travel and minimum accuracy of .!

0.0095 inch, such as QA-1685 l:

2.4 Tools and Consumables -

2.4.1 Tools- ,

  • Bearing puller 1
  • Drain pan (contaminated oil)  !

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  • Feeler gages I

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  • Fine-grit abrasive stone
  • Mechanic's standard tool kit a "NO OII" tag l
  • Scribe or razor blade
  • Snap ring pliers V_-blocks 2.4.2 Equipment
  • Induction bearing heater or bearing press-1 I

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MP 723.6 Level of Use STOP THINK 'ACT REVIEW Rev.2 General- 3 or 27

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2.4.3 Spare Parts )

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\j Adjusting shims

  • Bearings i

Bearing housing 0-ring Casing joint gasket  !

Impeller Impeller hub O-ring Inside and outside snap rings

  • Mechanical seal

- Pump end and motor end shaft seals (m.

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MP 723.6 '

Level of Use STOP THINK ACT REVIEW Rev. 2 General 4 or 27 l

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,m 2.4.4 Consumables

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  • Approved lubricant such as Versilube 1

Low-lint cloth i

= Pump lubricant l Approved antiseize lubricant such as nuclear-grade Never Seez Approved thread sealant such as PRI-101N i Approved cleaning solution such as Polywater Hydrafoam 2020 )

2.5 Responsibilities 2.5.1 Operations Department is responsible for filling, venting, and i running pump.

i 2.6 ' Definitions O

V 2.6.1 DE-MAGNETIZE-To deprive of magnetic properties.  !

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3. PRECAUTIONS l

3.1 Match mark disassembled components as necessary to aid in reassembly. j Do not match mark delicate parts or critical mating surfaces.

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

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.i V Level of Use STOP THINK ACT REVIEW Rev. 2 General 5 of 27 1

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p 4. INSTRUCTIONS l 4.1 Pump Removal 1

l NOTE i 1

Sections 4.1 through 4.7 provide instructions for overhauling the pump. l Section 4.8 provides instructions for replacing the mechanical seal  !

independent of a pump overhaul.

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 PLACE drain pan beneath oil drain plug (26). j 4.1.5 REMOVE oil drain plug, and DRAIN oilinto drain pan.  !

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4.1.6 HANG "NO Oll" tag on pump. ,

4.1.7 DISCONNECT stuffing box coolant piping. I NOTE j Pump frame can be disconnected from suction case without disconnecting suction and discharge p p ng. If suction case does not require repair or replacement,it may be e t connected to suction and discharge piping.

4.1.8 REMOVE suction case nuts (21).

4.1.9 REMOVE frame hold-down bolt.

4.1.10 SEPARATE frame (25) from suction case (19).

4.1.11 REMOVE casingjoint gasket (20).

I 4.1.12 IE suction case removalis required, PERFORM the following:  !

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n a. DISCONNECT pump suction piping. I

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Level of Use STOP THINK ACT REVIEW Rev. 2 General 6 of 27 i

b. DISCONNECT pump discharge pipmg.
c. REMOVE suction case hold-down bolts. l l

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d. REMOVE suction case (19). l i

i e. COVER opening of suction piping.

f. COVER opening of discharge piping.

4.1.13 IE possible, TRANSFER pump to controlled work area.

4.2 Pump Disassembly l

4.2.1 While holding shaft stationary, REMOVE impeller (16) by rotating impeller nut counterclockwise.

NOTE J Do not dispose of impeller hub O-ring. O-ring will be reused during pump trial assembly for impeller clearance adjustment.

A Q 4.2.2 REMOVE, but do not DISPOSE of, impeller hub O-ring (15).

4.2.3 REMOVE pump half of coupling.

4.2.4 REMOVE shaft key (1).

4.2.5 REMOVE gland nuts (11).

4.2.6 MOVE gland (12) toward bearing assembly.

4.2.7 REMOVE stuffing box cover bolts (22).

4.2.8 REMOVE stuffing box cover (13) from frame (25).

4.2.9 Refer To Attachment 2, and LOOSEN mechanical seal rotating face set screws.

4.2.10 REMOVE mechanical seal rotating face from shaft.

l 4.2.11 Refer To Attachment 1, and REMOVE gland and mechanical seal stationay face (12) from shaft.

rm iQ i MP 723.6 Level of Use STOP THiNK ' ACT REVIEW General 7 of 27

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,~ 4.2.12 REMOVE shaft sleeve (14) from shaft.

i k' 4.2.13 REMOVE shaft sleeve key (17) from shaft.

4.2.14 REMOVE pump end deflector (23) from shaft.

4.2.15 REMOVE motor end deflector (31) from shaft.

4.2.16 REMOVE bearing housing capscrews (4).

4.2.17 REMOVE adjusting shims (29) from between bearing housing (30) and frr.me (25).

4.2.18 REMOVE shaft assembly from frame with the following attached:

Shaft (33)

- Bearing housing (30)

- Thrust bearing (5) a Radial bearing (9)

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  • Oil slinger (8)

= Lock clip (7) 4.2.19 REMOVE inside snap ring (6) from bearing housing (30).

4.2.20 REMOVE bearing housing from shaft.

4.2.21 REMOVE bearing housing 0-ring (28) from bearing housing.

4.2.22 REMOVE motor end bearing cap (3) from bearing housing.

4.2.23 REMOVE motor end shaft seal (2) from bearing housing.

4.2.24 REMOVE pump end bearing cap (10) from frame.

4.2.25 REMOVE pump end shaft seal (24) from frame.

l 4.2.26 REMOVE outside snap ring (32) from bearing housing (30).

4.2.27 REMOVE thrust bearing (5) from shaft.

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l_evel of Use STOP THINK ACT REVIEW Generai 8 of 27 i

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p 4.2.28 REMOVE radial bearing (9) from shaft.

(/ 4.3 Pump Cleaning and Inspection 1 1

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! NOTE I l

  • When cleaning pump components, particular attention should be paid  ;

to cleaning machmed surfaces, gasket joints, stuffing box cavity, and  !

sealing liquid inlet. l l

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  • Structural damage and defects include breakage, cracks, deformation,

' distortion, corrosion, pitting, scoring, scratches, erosion, galling, and indications of misalignment.

4.3.1 Using an approved cleaning solvent, CLEAN all pump

components.

l 4.3.2 INSPECT all components for wear, structural defects, and l damage.

l 4.3.3 IE inspection results are not satisfactory, REPAIR or REPLACE applicable component (s).

a. INSPECT shaft runout as follows:

(O./

1) MOUNT shaft in V-blocks.
2) Using a dial indicator, MEASURE shaft total indicator runout (TIR) at the following locations:

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  • Bearings
  • Impeller
3) IE shaft runout is greater than 0.001 inch, REPAIR or REPLACE shaft.

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4) RECORD as-left TIR values onto AWO.
5) IN'iTALL shaft sleeve onto shaft.
6) Using a dial indicator, MEASURE TIR at shaft sleeve.

!O I Level of Use STOP THINK ACT REVIEW General f 9 27 1

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g 7) IE TIR is greater than 0.002 inch at shaft sleeve, y REPLACE shaft sleeve.

8) IE shaft is to be replaced, REMOVE oil slinger (8) and lock clip (7) from shaft.

4.4 Pump Repair NOTE Bearings, mechanical seal, gaskets, shaft seals, and 0-rings should be replaced whenever pump is overhauled.

4.4.1 Using a fine-grit abrasive stone, REMOVE the following from all gasket scaling surfaces:

  • Burrs
  • Rust
  • Paint l

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  • Raised surfaces
  • Dirt l

l 4.5 Pump Assembly l

l NOTE Bearings, mechanical seal, gaskets, shaft seals, and 0-rings should be replaced whenever pump is overhauled. j 1

l 4.5.1 INSTALL lock clip (7) onto shaft (33).

4.5.2 INSTALL oil slinger (8) onto shaft.

4.5.3 With tapered edge of inside snap ring (6) facing toward suction i case (19), INSTALL inside snap ring onto shaft. l I

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MP 723.6

( Level of Use STOP THINK 'ACT REVIEW General L 10 0f 27 I ,

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O V NOTE Bearings can be installed using an induction bearing heater or a bearing press. Installation with an induction bearing heater is the preferred method.

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4.5.4 INSTALL bearings onto shaft as follows:

a. E using an induction bearing heater, PERFORM the following:

C A U TIO N 1 To prevent damage to bearing during heating process, bearing temperature must not exceed 250 E

1) liEAT thrust bearing (5) to 200 F, and ENSURE temperature does not exceed 250 E
2) DE-MAGNETIZE bearing.

C 3) INSTALL thrust bearing onto shaft, and IIOLD bearing firmly against shaft shoulder until bearing cools,

b. E using a bearing press, PERFORM the following:
1) MOUNT thrust bearing (5) and shaft (33) in bearing press.
2) PRESS shaft into thrust bearing, and ENSURE bearing inner race makes firm, even contact with shaft shoulder.
3) MOUNT radial bearing (9) and shaft in bearing press.
4) PRESS shaft into radial bearing, and ENSURE bearing inner race makes firm, even contact with shaft shoulder.

4.5.5 With tapered edge of outside snap ring (32) facing toward motor end, INSTALL outside snap ring onto shaft (33).

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Level of Use STOP THINK ACT REVIEW General Rev;,2

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l C AUTIO N To prevent damage to shaft seals, use caution when installing shaft seals 1 l into bearing cap and when installing bearing cap into bearing housing.

4.5.6 With shaft seal lip facing away from bearing, INSTALL motor end I shaft seal (2) into motor end bearing cap (3).

4.5.7 INSTALL motor end bearing cap (3), with shaft seal, into bearing i housing (30). i 4.5.8 INSTALL bearing housing onto shaft. l 4.5.9 Using an approved lubricant, LUBRICATE bearing housing O-ring (28).

4.5.10 INSTALL bearing housing 0-ring over pump end of shaft and into bearing housing 0-ring groove.

4.5.11 INSTALL inside snap ring (6) to lock thrust bearing (5) in position.

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Y C AUTION To prevent damage to shaft seals, use caution when installing shaft seals into bearing cap and when installing bearing cap into frame.

4.5.12 With shaft seal lip facing away from bearing, INSTALL pump end I shaft seal (24) into pump end bearing cap (10). ]

l 4.5.13 INSTALL pump end bearing cap (10), with shaft seal, into frame (25).  !

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Level of Use STOP' THINK ACT REVIEW MP 723.6 l

General 12 of 27 l

4.5.14 INSTALL shaft into frame with the following attached:

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  • Bearing housing (30)

Bearing housing 0-ring (28)

  • Thrust bearing (5)

Radial bearing (9)

Oil slinger (8)

Lock clip (7) 4.5.15 INSTALL motor end deflector (31) onto shaft.

4.5.16 INSTALL pump end deflector (23) onto shaft.

4.5.17 INSTALL shaft key (1) onto shaft.

4.5.18 INSTALL pump half of coupling onto shaft.

4.5.19 INSTALL shaft sleeve key (17) onto shaft.

U 4.5.20 INSTALL shaft sleeve (14) onto shaft, and firmly SEAT motor end of shaft sleeve against shaft shoulder.

NOTE The impeller clearance adjustment procedure involves performing a pump trial assembly and shimming the bearing housing to obtain the proper clearance between the impeller and suction case.

4.5.21 ADJUST impeller clearance as follows:

a. IE pump was transferred to a controlled work area, TRANSFER pump to field location,
b. ALIGN stuffing box cover (13) with frame (25).
c. INSTALL and TIGIITEN stuffing box cover bolts (22),
d. INSTALL old impeller hub O-ring (15) onto shaft (33).

C4 Level of Use STOP THINK ACT REVIEW General '

R" 3 f 27

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- e. INSTALL and TIGHTEN impeller (16) onto shaft.

f. INSTALL casing joint gasket (20) onto stuffing box l cover (13).

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g. ALIGN frame (25) with suction case (19).
h. Using a diagonal sequence, INSTALL and TIGHTEN four suction case nuts (21).

l i. INSTALL, but do not tighten, two bearing housing cap l screws (4) into tapped jacking holes in bearing housing (30).

j. ROTATE and PUSH shaft-impeller assembly toward suction case (19) until impeller contacts suction case.
k. . Using a feeler gage, MEASURE gap between bearing housing (30) and frame (25). t
l. TIGHTEN two bearing housing capscrews (4) into tapped l jacking holes as required to increase gap between bearmg housing and frame by 0.012 to 0.016 inch.
m. Using feeler gage, MEASURE gap between bearing

{u housing (30) and frame (25). l l

NOTE  :

Adjusting shims should be placed at top and bottom of bearing housing gap in order to maintain proper bearing abgnment.

n. INSTALL adjusting shims (29) of the thickness measured in step 4.5.21.m. between bearing housing (29) and frame (25) as required.
o. REMOVE two bearing housing capscrews (4) from tapped jacking holes in bearing housing (30).
p. INSTALL and TIGHTEN bearing housing capscrews (4).
q. ROTATE shaft by hand, and ENSURE pump turns freely without binding.

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y; Level of Use STOP THINK.' ACT ' REVIEW Rev.2 General 14 of 27

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C NOTE  !

The mechanical seal installation procedure involves marking the position )

of the mechanical seal, disassembling the pump, securing the mechanical ,

seal in position, and reassembling the pump. t 4.5.22 INSTALL mechanical seal as follows:

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a. Using a razor blade or scribe, SCRIBE mark on shaft j

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sleeve (14) at point where shaft sleeve enters stuffing box cavity. i i

b. REMOVE suction case nuts (21).

l c. SEPARATE frame (25) from suction case (19).

{ t l d. While holding shaft stationary, REMOVE impeller (16) by  !

rotating impeller nut counterclockwise.

c. REMOVE and DISPOSE of impeller hub O-ring (15). 1
f. REMOVE stuffing box cover bolts (22).

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g. REMOVE stuffing box cover (13) from frame (25).

i l h. REMOVE shaft sleeve (14).

i. REMOVE shaft sleeve key (17).
j. Using a razor blade or scribe, SCRIBE mark on shaft sleeve 15 /32-inch inboard of line scribed in step 4.5.22.a.

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k. Refer To Attachment 2, and, using an approved lubricant, l sparingly LUBRICATE mechanical seal Chemlon ring.
1. With back edge of seal facing pump end, POSITION mechanical seal rotating face onto shaft sleeve.
m. POSITION back edge of mechanical seal rotating face at line scribed in step 4.5.22.j.

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n. TIGHTEN mechanical seal rotating face set screws. '

L o. REMOVE preload clips from mechanical seal rotating face.

MP 723.6 Level of Use STOP THINK ACT REVIEW i Rev.2 <

General 15 of 27 i

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p. INSTALL mechanical seal stationary face onto shaft sleeve as ,

g directed in seal installation instructions. '

q. Refer To Attachment 1, and POSITION gland (12) onto shaft sleeve (14).
r. INSTALL shaft sleeve key (17) onto shaft (33). l i

l s. INSTALL shaft sleeve, with gland and mechanical seal, onto  !

shaft, and firmly SEAT outboard end of shaft sleeve against  !

shaft shoulder.

i C A UTIO N l Tb avoid damage to mechanical seal, use caution when attaching stuffing

box cover to frame, when installing impeller, and when tightening gland.

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t. - ALIGN stuffing box cover (13) with frame (25).

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u. INSTALL and TIGHTEN stuffing box cover bolts (22).

I v. Using an approved lubricant, LUBRICATE impeller hub O-ring (15).

w. INSTALL impeller hub O-ring (15) onto shaft (33). I
x. INSTALL and TIGHTEN impeller (16) onto shaft.
y. Using a diagonal sequence, INSTALL and evenly TIGIITEN gland nuts (11)..

4.6 Pump Installation 4.6.1 Refer To Attachment 1, and INSTALL casing joint gasket (20) onto stuffing box cover (13).

1 4.6.2 ALIGN frame (25) with suction case (19). I l

i 4.6.3 Using a diagonal sequence, INSTALL and TIGHTEN suction l case nuts (21).

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i 4.6.4 LOOSEN nut securing supporting foot (27) to frame (25).

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MP 723.6 Level of Use STOP THINK ACT REVIEW General 16 of 27 l

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-s 4.6.5 IE suction and discharge piping was disconnected during pump l (j

w removal, PERFORM the following:

a. CONNECT pump to suction piping.
b. CONNECT pump to discharge piping.

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c. INSTALL suction case hold-down bolts. I l

4.6.6 INSTALL and TIGHTEN frame hold-down bolt. l l

4.6.7 TIGHTEN nut securing supporting foot (27) to frame (25).

4.6.8 APPLY approved thread sealant to threads of oil drain plug (26). :

4.6.9 INSTALL and TIGIITEN oil drain plug.

4.6.10 Refer To MP 791.0, (Att), " Liquid Radwaste (312)" and LUBRICATE pump. '

4.6.11 REMOVE "NO OIL" tag from pump. l 4.6.12 CONNECT stuffing box coolant piping.

C' 4.6.13 ROTATE shaft by hand, and ENSURE pump turns ficely without binding.

4.6.14 Refer To C MP 710A,"Ilorizontal Shaft Alignment," and ALIGN l 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 4.6.15 TIGHTEN motor hold-down bolts.

4.6.16 INSTALL coupling spacer, and COUPLE pump to motor.

4.6.17 INSTALL coupling guard.

4.7 Operational Checkout 4.7.1 REQUEST Operations Department fill, vent, and run pump.

4.7.2 CHECK all joints and seals for leaks.

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Level of Use STOP THINK ACT REVIEW l Rev. 2 General l _ 17 of 27 l

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t l-4.8 Mechanical Seal Replacement l

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NOTE The mechanical seal replacement procedure involves adjusting the impeller clearance, removing the mechanical seal, inspecting the exposed components, and replacing the mechanical seal.

4.8.1 ADJUST impeller clearance as follows:  !

a. REMOVE coupling guard. i

' - b. UNCOUPLE pump from motor, and REMOVE coupling spacer.

, c. REMOVE motor hold-down bolts. 1 t  ;

d. MOVE motor to provide access for removing pump frame assembly. ,

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e. DISCONNECT stuffing box coolant piping,
f. Refer To Attachment 1, and REMOVE bearing housing cap screws (4).  !
g. REMOVE adjusting shims (29).

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h. INSTALL, but do not tighten, two bearing housing cap screws (4) into tapped jacking holes in bearing housing (30).
i. I ROTATE and PUSH shaft-impeller assembly toward suction case (19) until impeller contacts suction case.
j. Using a feeler gage, MEASURE gap between bearing i housing (30) and frame (25).

l l k. TIGHTEN two bearing housing capscrews (4) into tapped jacking holes as required to increase gap between bearing housing and frame by 0.012 to 0.016 inch.

1. Using feeler gage, MEASURE gap between bearing housing (30) and frame (25).

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! V MP 723.6 Level of Use STOP 'THINK ACT REVIEW Rev. 2 General 18 of 27 1

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NOTE l

Adjusting shims sh,ould be placed at to,p and bottom of bearing housing gap [

in order to maintain proper bearing algnment.

m. INSTALL adjusting shims (29) of the thickness measured in step 4.8.1.1. between bearing housing (29) and frame (25) as required.

l n. REMOVE two bearing housing capscrews (4) from tapped l jacking holes in bearing housing (30).

o. INSTALL and TIGHTEN bearing housing capscrews (4).
p. ROTATE shaft by hand, and ENSURE pump turns freely without binding.

i 4.8.2 REMOVE mechanical seal as follows:

a. Refer To Attachment 1, and REMOVE suction case nuts (21).
b. REMOVE frame hold-down bolt. I l
c. SEPARATE frame (25) from suction case (19). l
d. REMOVE casing joint gasket (20).
e. While holding shaft stationary, REMOVE impeller (16) by l rotating impeller nut counterclockwise.
f. REMOVE impeller hub O-ring (15).
g. REMOVE gland nuts (11).
h. MOVE gland (12) toward bearing assembly.
i. Using a razor blade or scribe, SCRIBE mark on shaft l

sleeve (14) at point where shaft sleeve enters stuffing box l cavity.

j. REMOVE stuffing box cover bolts (22). .

I k. PULL stuffing box cover (13) from frame (25).

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l Refer To Attachment 2, and LOOSEN mechanical seal p.

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rotating face set screws.

m. REMOVE mechanical seal rotating face from shaft. j l
n. Refer To Attachment 1, and REMOVE gland (12) and mechanical seal stationary face from shaft. l I
o. REMOVE shaft sleeve (14) from shaft. ,

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p. REMOVE shaft sleeve key (17) from shaft. '

NOTE Structural damage and defects include breakage, cracks, deformation,  !

distortion, corrosion, pitting, scoring, scratches, erosion, galling, and  !

indications of misalignment.

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

4.8.4 E inspection results are not satisfactory, REPAIR or REPLACE O

v applicable component (s).

4.8.5 INSPECT shaft runout as follows:

a. MOUNT shaft in V-blocks. l
b. Using a dial indicator, MEASURE shaft total indicator runout (TIR) at impeller fit and shaft sleeve fit.
c. E TIR is greater than 0.001 inch, REPAIR or REPLACE shaft.
d. INSTALL shaft sleeve onto shaft.
e. Using a dial indicator, MEASURE TIR at shaft sleeve.
f. E TIR is greater than 0.002 inch at shaft sleeve, REPLACE shaft sleeve.

4

g. RECORD as-left TIR values onto AWO.

l

h. E shaft sleeve is replaced, SCRIBE seal location mark onto replacement shaft sleeve.

MP 723.6 Level of Use STOP THINK ACT REVIEW l ,

Rev. 2 l General '

20 of 27

l l

p 4.8.6 REPLACE mechanical seal as follows:

)

V l a. Using a razor blade or scribe, SCRIBE mark on shaft sleeve 15 /32-inch inboard of line scribed in step 4.8.2.1.  !

)

i b. Refer To Attachment 2, and, using an approved lubricant, i sparingly LUBRICATE mechanical seal Chemlon ring. l l

l

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

I

d. POSITION back edge of mechanical seal rotating face at line  !

( scribed in step 4.8.6.a.

l e. TIGHTEN mechanical seal rotating face set screws.

l f. REMOVE preload clips from mechanical seal rotating face. )

l

g. INSTALL mechanical seal stationary face ento shaft sleeve as directed in seal installation instructions. I
h. Refer To Attachment 1, and INSTALL shaft sleeve key (17) onto shaft.

(~h V i. POSITION gland (12) onto shaft sleeve (14).

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

C A UTIO N To avoid damage to mechanical seal, use caution when attaching stuffing i box cover to frame, when installing impeller, and when tightening gland. j

k. ALIGN stuffing box cover (13) with frame (25).
1. INSTALL and TIGHTEN stuffing box cover bolts (22).
m. Using an approved lubricant, LUBRICATE impeller hub O-ring (15).

i n. INSTALL impeller hub O-ring (15) onto shaft. ,

I C

Level of Use STOP THINK ACT REVIEW General 2 "if 27 I

i

o. INSTALL and TIGHTEN impeller (16) onto shaft.

O,

p. INSTALL casing joint gasket (20) onto stuffing box l cover (13). j
q. Using a diagonal sequence, INSTALL and TIGHTEN gland l nuts (11) evenly.  ;

!. r. ALIGN frame (25) with suction case (19).  !

l s. Using a diagonal sequence, INSTALL and T!GHTEN suction case nuts (21). [

l i

t. LOOSEN nut securing supporting foot (27) to frame (25).

l

u. INSTALL and TIGHTEN frame hold-down bolt. l l
v. TIGHTEN nut securing supporting foot (27) to frame (25). }

F l w. CONNECT stuffing box coolant piping. l I '

x. ROTATE shaft by hand, and ENSURE pump turns freely without binding.  ;
y. 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 l i
z. TIGHTEN motor hold-down bolts. l  !

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

ab. INSTALL coupling guard.  !

ac. Go To Section 4.7, and PERFORM Operational Checkout.

i l-l

)

O. ,

V '

Level of Use STOP THINK ACT REVIEW l Rev.2 G eral 22 of 27 l

l 5. REVIEW AND SIGN-OFF (v )

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

6. REFERENCES l

l 6.1 NNECO Accident Prevention Manual 6.2 Drawings 6.2.1 NUSCo Drawing 2520.2-29041 Sheet 9 "1-1/2 x 1 x 6 CSO With )

Various Motors Model F4Al" '

6.2.2 Crane Company Drawing CF-SP-16224 j 1

6.3 Vendor Manuals 6.3.1 Document No. 25202-001-001 A "Allis-Chalmers Instructions for Installation, Operation, and Maintenance Type CSO Model F-4 Centrifugal Pumps" 6.3.2 Form No. 741C-R, " Wood's Sure-Flex Couplings Installation

/N Instructions" l (m, ) l 6.4 Administrative Procedures 6.4.1 CC 1," Control of Chemical Consumable Products" 6.4.2 WC 8," Control and Calibration of Measuring and Test Equipment" 6.5 Maintenance Procedures 6.5.1 MP 791.0," Plant Component Lubrication" 6.5.2 C MP 710A," Horizontal Shaft Alignment" 6.6 Other Documents l 6.6.1 Maintenance Department Main Purchase Order (MPO)

File #106931 1

7.

SUMMARY

OF CllANGES gy 7.1 Revision 2 incorporated Revision 1, change 1 as follows:

( )

'v MP 723.6 '

, Level of Use STOP THINK ACT REVIEW  !

! Rev.2 l General 23 of 27 i

,,-~s 7.1.1 Deleted requirement for Mobil DTE 797 oil.

t v) 7.1.2 Added reference MP 791.0," Plant Component Lubrication."

7.2 Updated references and made various editorial changes as a result of Biennial Review.

7.3 Added Responsibilities section.

g^s,

%3' l

f^g V

Level of Use STOP THINK ACT REVIEW Rev.2 General 24 of 27

l Attachment 1 l Pump Assembly I l (Sheet 1 of 2) ,

i MOTOR END " ' PUMP END (OUTilOARD) (INilOARD) l I I 5 6 7 8 9 10 11 12 13 14 4

\\ -

D l -1 n 15

~

l h;t it 3

,, 1 Jh 33 ' / ,

l 3- -

_b .

U -

anC /

N .

\

17 l \\ l -

18 19 29 28 27

/ ,\ 26 25 24 23 22 21 /_ x 2,  !

I

)

A U

Level of Use STOP THINK ACT REVIEW Rev.2 General 25 or 27

Attachment 1 Pump Assembly y ~

(Sheet 2 of 2)

{

U l ITEM # DESCRIITION ITEM # DESCRIPTION 1 SilAFT KEY 18 MECllANICAL SEAL l

! 2 SilAFT SEAL (MOTOR END) 19 SUCTION CASE 3 HEARING CAP (MOTOR END) 20 CASING JOINT GASKET

! 4 HEARING llOUSING CAPSCREW 21 SUCTION CASE NUT l

5 TilRUST HEARING 22 STUFFING llOX COVER llOLT 6 INSIDE SNAP RING 23 DEFLECTOR (PUMP END) 7 LOCK CLIP 24 SilAIT SEAL (PUMP END)

! 8 OIL SLINGER 25 FRAME l 9 RADIALIlEARING 26 OIL DRAIN PLUG 10 IIEARING CAP (PUMP END) 27 SUPPORTING FOOT

,,. g 11 GLAND NUr 28 HEARING IIOUSING O-RING 12 GLAND 29 ADJUSTING SillMS 13 STUFFING llOX COVER 30 llEARING IlOUSING 14 SIIAFT SLEEVE 31 DEFLECTOR (MOTOR END) 15 IMPELLER ilUll O-RING 32 OUTSIDE SNAP RING 16 IMPELLER 33 SilAIT 17 SilAFT SLEEVE KEY l

l

.i 1

\",

MP 723.6 Level of Use STOP THINK ACT REVIEW Rev.2 General 26 or 27 i

Attacliment 2 Meclianical Seal Assembly (Sheet 1 of 1)

!O l

I MOTOR END '

PUMP ENI)

(OUTBOARD) (INBOARD) l STATIONARY FACE l i

I GLAND STUFFING IlOX l GASKET GASKET I f

4 5 1 /32" >

(N  ;

A if 3 I

l f

._ m ,, ..

g g y 39 SET SCREW

)

AG AS E 11 '

[ (IIACK EDGE)

ROTATING FACE g i ___________________4_=_====_======

)

N )

\ l l L 1 ) 1

\/ r---_---_-----_----__-----_-w--------

N

'\

SilAFT SilAFT LEEVE CIIEMLON RING l ,

I l

A t

' (#

MP 723.6 i

Level of Use STOP THINK ACT REVIEW Rev.2 eneral l

l 27 of 27

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