PREVENTATIVE MAINTENANCE

Maintenance and Parts Go Hand in Hand

Preventative maintenance often requires replacement parts. Keeping critical spares on hand supports both routine maintenance and unexpected repairs.

Contact BLAC INC. for guidance on which parts to stock, and in what quantities, to support your preventative maintenance program.

Torque Wrench with Tube Fittings, Relief Valve

Slide Valve Turnaround Replacement Parts

Erosion of internal components is normal in slide valves. It is common in many refineries to simply replace these components at turnaround. However, parts should seldom be replaced until after having been rebuilt several times.

There are valve manufacturers that purposely design valve components to require replacement every TA. We believe this is a wrong approach because the refinery should not have to purchase parts every time the unit is down. Our design capability solves these problems that cause parts to be replaced, saving the refinery money and time in the turnaround schedule.

We provide high-quality spare parts designed to meet your needs and reduce operational risks. For more information on how we handle valve spare parts, see here.

Maintenance Schedules

These schedules outline the essential preventative maintenance tasks that should be performed regularly by end-user maintenance personnel.

Following these guidelines helps ensure optimal performance and extends the service life of your equipment.

Neglecting scheduled maintenance may result in decreased reliability and a shortened lifespan of BLAC INC. components.

  FCCU Maintenance Schedule:
HPU, HCU & Actuator Equipment (20 Years)

  FCCU Maintenance Schedule (20 Years): 
HPU, HCU & Actuator Equipment

Equipment 
Requires Action
in Year No.
(Hover on row
to see Note)
  1
  2
  3
  4
  5
  6
  7
  8
  9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20

Main Pump Filters
Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Conditioning System Filters Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Thermostatic Bypass Valve Internals Replacement in (X)
or based on
Performance (Y)
Y
X
Y
X
Y
X
Y
X

Reservoir Breather Filter Replacement (C)
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C

Reservoir Nitrogen /
Dry Air Purge Filter
Replacement and
Pressure Regulator Cleaning (D)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D

Vent/Vacuum Breaker, Pressure Relief Valve Replacement (E)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

Vortex Cooler
Air Filter Replacement (F)
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F

Reservoir Fluid
Analysis (A)
and Change (X)
at minimum
A
A
A
A
A
X
A
A
A
A
X
A
A
A
X
A
A
X

Reservoir Cleaning

X

X

X

X

Motor Rebuild

X

X

Pump Replacement (Y)

Y

Y

Y

Y

Motor/Pumps Coupling Replacement

X

X

X

X

Hoses Replacement

X

X

X

X

Solenoid Valves (non-ESD) Replacement

X

X

Solenoid Valves (ESD) Replacement

X

X

X

X

Servo Valve
Rebuild (X)
Replace (Z)

X

X

Z

X

Hydraulic Valves / Manifold Replacement

X

X

X

O-Ring Seals for
All Components
and Manifold
Mating Services
Replacement

X

X

Accumulator Seals
Replacement
(with Proper Materials)

X

X

X

X

Cylinder Seals Replacement

X

X

X

X

HW Positioner Bearings Replacement

X

X

X

HW Positioner Seals for ACME Screws Bearings Replacement

X

X

X

HW Positioner Split Nut Housing Seals Replacement

X

X

X

Bolting –
Cylinder to
Mechanical Positioner
Replacement

X

X

Bolting –
Cylinder Rod
and Valve Stem
Split Couplings
Bolts to Split Nut
Replacement

X

X

Bolting –
Mechanical Positioner
to Valve Bonnet
(Studs & Nuts)
Replacement

X

X

SAE Threaded Plugs Replacement

X

X

 Equipment
Requires Action
in Year No.
(Click on row
to see Note)
  1
  2
  3
  4
  5
  6
  7
  8
  9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20

Main Pump Filters
Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Conditioning System Filters Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Thermostatic Bypass
Valve Internals
Replacement in (X)
or based on
Performance (Y)
Y
X
Y
X
Y
X
Y
X

Reservoir Breather Filter Replacement (C)
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C

Reservoir Nitrogen /
Dry Air Purge Filter
Replacement and
Pressure Regulator
Cleaning (D)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D

Vent/Vacuum Breaker, Pressure Relief Valve Replacement (E)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

Vortex Cooler
Air Filter Replacement (F)
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F

Reservoir Fluid Analysis (A)
and Change (X)
at minimum
A
A
A
A
A
X
A
A
A
A
X
A
A
A
X
A
A
X

Reservoir Cleaning

X

X

X

X

Motor Rebuild

X

X

Pump Replacement (Y)

Y

Y

Y

Y

Motor/Pumps Coupling Replacement

X

X

X

X

Hoses Replacement

X

X

X

X

Solenoid Valves (non-ESD) Replacement

X

X

Solenoid Valves (ESD) Replacement

X

X

X

X

Servo Valve
Rebuild (X)
Replace (Z)

X

X

Z

X

Hydraulic Valves / Manifold Replacement

X

Z

X

O-Ring Seals
for All Components
and Manifold
Mating Services
Replacement

X

X

Accumulator Seals Replacement (with Proper Materials)

X

X

X

X

Cylinder Seals Replacement

X

X

X

X

HW Positioner Bearings Replacement

X

X

X

HW Positioner Seals for ACME Screws Bearings Replacement

X

X

X

HW Positioner Split Nut Housing Seals Replacement

X

X

X

Bolting –
Cylinder to
Mechanical Positioner
Replacement

X

X

Bolting –
Cylinder Rod and
Valve Stem
Split Couplings
Bolts to Split Nut
Replacement

X

X

Bolting – Mechanical Positioner to Valve Bonnet (Studs & Nuts) Replacement

X

X

SAE Threaded Plugs Replacement

X

X

See table row note here.

  Power Plant Maintenance Schedule:
HPU, HCU & Actuator Equipment (20 Years)

  Power Plant Maintenance Schedule (20 Years): 
HPU, HCU & Actuator Equipment

Equipment 
Requires Action
in Year No.
(Hover on row
to see Note)
  1
  2
  3
  4
  5
  6
  7
  8
  9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20

Main Pump Filters
Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Conditioning System Filters Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Thermostatic Bypass Valve Internals Replacement in (X)
or based on
Performance (Y)
Y
X
Y
X
Y
X
Y
X

Reservoir Breather Filter Replacement (C)
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C

Reservoir Nitrogen /
Dry Air Purge Filter 
Replacement and
Pressure Regulator Cleaning (D)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D

Vent/Vacuum Breaker, Pressure Relief Valve Replacement (E)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

Vortex Cooler
Air Filter Replacement (F)
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F

Reservoir Fluid
Analysis (A)
and Change (X)
at minimum
A
A
A
A
A
X
A
A
A
A
A
X

A
A
A
A
A
X
A
A
A
A
A
X

Reservoir Cleaning

X

X

X

X

Motor Rebuild

X

X

Pump Replacement (Y)

Y

Y

Y

Y

Motor/Pumps Coupling Replacement

X

X

X

X

Hoses Replacement

X

X

X

X

Solenoid Valves (non-ESD) Replacement

X

X

Solenoid Valves
(Trip/Fast Close)
Replacement

X

X

X

X

Servo Valve
Rebuild (X)
Replace (Z)

X

X

Z

X

O-Ring Seals for
All Components
and Manifold
Mating Services
Replacement

X

X

Accumulator Seals
Replacement
(with Proper Materials)

X

X

X

X

Cylinder Seals Replacement

X

X

X

X

Bolting –
Cylinder to
Valve Yoke

X

X

Bolting –
Valve Stem
Coupling

X

X

Equipment 
Requires Action
in Year No.
(Click on row
to see Note)
  1
  2
  3
  4
  5
  6
  7
  8
  9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20

Main Pump Filters
Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Conditioning System Filters Replacement (B)
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B

Thermostatic Bypass Valve Internals Replacement in (X)
or based on
Performance (Y)
Y
X
Y
X
Y
X
Y
X

Reservoir Breather Filter Replacement (C)
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C

Reservoir Nitrogen /
Dry Air Purge Filter 
Replacement and
Pressure Regulator Cleaning (D)
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D

Vent/Vacuum Breaker, Pressure Relief Valve Replacement (E)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

Vortex Cooler
Air Filter Replacement (F)
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F

Reservoir Fluid
Analysis (A)
and Change (X)
at minimum
A
A
A
A
A
X
A
A
A
A
A
X

A
A
A
A
A
X
A
A
A
A
A
X

Reservoir Cleaning

X

X

X

X

Motor Rebuild

X

X

Pump Replacement (Y)

Y

Y

Y

Y

Motor/Pumps Coupling Replacement

X

X

X

X

Hoses Replacement

X

X

X

X

Solenoid Valves (non-ESD) Replacement

X

X

Solenoid Valves
(Trip/Fast Close)
Replacement

X

X

X

X

Servo Valve
Rebuild (X)
Replace (Z)

X

X

Z

X

O-Ring Seals for
All Components
and Manifold
Mating Services
Replacement

X

X

Accumulator Seals
Replacement
(with Proper Materials)

X

X

X

X

Cylinder Seals Replacement

X

X

X

X

Bolting –
Cylinder to
Valve Yoke

X

X

Bolting –
Valve Stem
Coupling

X

X

See table row note here.

PREVENTATIVE MAINTENANCE

Maintenance and Parts Go Hand in Hand

Slide Valve Turnaround Replacement Parts

Maintenance Schedules

FCCU Maintenance Schedule:
HPU, HCU & Actuator Equipment (20 Years)

FCCU Maintenance Schedule (20 Years):
HPU, HCU & Actuator Equipment

Power Plant Maintenance Schedule:
HPU, HCU & Actuator Equipment (20 Years)

Power Plant Maintenance Schedule (20 Years):
HPU, HCU & Actuator Equipment

INDUSTRIES

APPLICATIONS

FEATURED PRODUCTS

MAJOR SERVICES

VALVE TYPES

VALVE PRODUCTS

ACTUATOR PRODUCTS

PARTS & SERVICES

TERMS AND CONDITIONS

PREVENTATIVE MAINTENANCE

Maintenance and Parts Go Hand in Hand

Slide Valve Turnaround Replacement Parts

Maintenance Schedules

FCCU Maintenance Schedule:HPU, HCU & Actuator Equipment (20 Years)

FCCU Maintenance Schedule (20 Years): HPU, HCU & Actuator Equipment

Power Plant Maintenance Schedule:HPU, HCU & Actuator Equipment (20 Years)

Power Plant Maintenance Schedule (20 Years): HPU, HCU & Actuator Equipment

FCCU Maintenance Schedule:
HPU, HCU & Actuator Equipment (20 Years)

FCCU Maintenance Schedule (20 Years):
HPU, HCU & Actuator Equipment

Power Plant Maintenance Schedule:
HPU, HCU & Actuator Equipment (20 Years)

Power Plant Maintenance Schedule (20 Years):
HPU, HCU & Actuator Equipment