Pressure Vessel Design Check List
Drafting
P.M
Initial
Eng.
Check List
Nameplate
Design Info. Pressure, temp, MDMT
Weight - Get from ASME Calculations
PWHT
Test Pressure
Initial
ASME Specifications
Head Thickness, Min. & Nominal. See ASME
Calculations
Shell Thickness
Material Grade, Normalized, B7M, Stainless Steel
Design Pressure
PWHT
Hydro Test Pressure
Correct ASME edition and addenda
Initial
General Notes
External Paint
Internal Paint
Initial
Schedule of Openings vs ASME calculations
Nozzle Tags are correct. No gaps in tag numbers
Tags match service, size and ANSI rating
Nozzle type - LWN or Pipe
Correct nozzle bore and/or pipe schedule
Correct outside / inside projecion.
Correct weld sizes.
Bill of material is complete with correct item numbers
Initial
Saddle Details vs ASME calculations
Correct web thicnkess
Correct rib thickness
Saddle bearing angle is correct. Min 120. See ASME
calculations
Does saddle have a repad. Thickness correct?
Correct saddle location from reference line
Bolt holes.: size, qty, location, slotted, etc.
Grounding lug required?
Initial
Elevation View
All nozzle location and elevation shown
Lift lug location.
Will lug placement interfere with lift? Will slings and
shackle clear all piping, etc. during lift
Outside projections
Nozzle type, schedule, rating, etc.
Correct saddle location from reference line
Are internals shown
Location of mist extractor
Location of vortex breakers
Location of inlet diverter
Location, elevations of bucket & weir
Orientation of davit arm
Location of ladder/platform/transformer support clips
Grab ring location and elevation
Are blind flanges shown
Are bolt and nuts shown on all blind flanges
Are internal supports located
Initial
Orientation View
Nozzle Orientaton correct
Are lift lugs orientated
Name plate orientation
Long seam orientation
Vessel height to centerline
Nozzle projections
Are all nozzles listed
Access opening orientation
Saddle Width
Saddle rib locations
Initial
Saddle or Skirt Details
Web dimensions compared to ASME calculations
Stiffener dimensions compared to ASME calculations
Saddle Height correct
Repad correct dimensions and angle
Bolt hole size and location compared to ASME
calculations
Base plate thickness
Saddle web and stiffener thickness
Base ring dimensions: I.D. / O.D. / Bolt Circle
Base ring bolt holes: Size / number
Access opening orientation, size, reinforcement rings,
etc.
Skirt height and thickness
Weld details: type, size and location
Initial
Mist Extractor Details
Location in vesse correct from reference line
Location from centerline.
Correct radius or diameter shown on framing
Does vane type extractor pieces fit through manway
Correct number of pieces. Always odd number of
pieces
Will individual pieces fit through extractor frame
opening.
Does extractor require downcomer pipe
If mesh type, are correct supports detailed
Initial
Inlet Diverter Details
Correct dimenions
Correct thickness
Correct location
Initial
Lift Lug Details
Are lugs sized correctly for vessel. Reference customer
spec. for sizing criteria.
Hole size correct
Lug dimensions correct: width, height, radius,
thickness, etc.
Will shackle fit over lugs with sufficient clearance for
sling, another shackle, etc.
Weld detail are correct.
Are repads required
Are repad dimensions correct with appropriate weld
details. See ASME calculations
Initial
Davit Arm Details
Is davit arm sized for blind flange
Use CPE standard davit details if possible
Initial
Bucket & Weir Details
Are dimensions correct
Confirm weir cut-out dimensions
Cofirm bucket and weir heights
Confirm material thickness
Initial
FireTube & Stack Details
Are firetube flange details correct: Firetube hole size,
number and size of bolt holes, firetube hole
center/center dimension, bolt hole offset degree,
thickness
Are firetube neck details correct: J-Bend detail, radius,
thicnkess, weld details
Are firetube dimension correct: length, diameter,
spacing, schedule.
Are burner ring flange details correct: I.D., O.D.,
thickness, bolt hole size, number and location. Does
burner ring match burner flange. Check mfr drawings.
Stack height correct
Are TSH connections provided
Are bend details provided
Will burner mount without interfeence
Check to make sure that top mounted level transmitter
probes do not contact fire tube supports or contact fire
tube. Need 6" clearance minimum.
Initial
Inlet Shroud Details
Is diameter and/or radius correct
Is thickness correct
Is equalization cutout detailed.
Initial
Sandjet Details
Pipe size and schedule correct
Are spray nozzles required? Location and number of
nozzles
Location and length of sand jet piping.
Initial
Oil Spreader Box Details
Are dimensions correct?
Confirm hole size, number and location
Will pieces be outsourced for cutting? Need details if
so.
If pieces are removable, will they fit through manway
Are supports detailed. Location, elevation, etc.
Check to make sure that top monted level proves that
extend into the interface level do not hit the spreader
box. Need minimum of 6" clearance.
Initial
Oil Collection Heater Details
Pipe size and schedule correct
Size, location and number of holes
Check to make sure entrance bushing is not directly
over collector pipe
Check to make sure top mounted level transmitter
proves are offset and do not hit the collector pipe
Initial
General Dimensions
Ensure that all dimensions are clear and can be read
easily.
Make sure reference line and center line are shown on
drawing.
Initial
Grid Details
Is treater an AC, DC or AC/DC?
Number of entrance bushings correct for treater type
Is grid size correct
Is grid spacing correct
Is grid isolation correct for treater type. AC vs AC/DC
Are insulator in correct positon for proper grid
isolation
Are insulator lengths correct
Are there enough grid supports
Are float balls in correct location
Are there enough float balls for treater type and size
Is grid Bill of material correct. # of grid plates, # of
insulators, support straps, u-bolts, nuts, washers,
unisturt, spring nuts, etc.
Are contact rod details correct
Initial
Is there an opening or clearance for top mounted level
transmitter probes to penetrate grid section
Platform, Ladder, Clip and Support Details
Are ladder, platform, misc clips and support details
correct
Trasformer support correct for appropriate transformer.
Insulation support ring details
Are ladder and platforms shown on an orientation
and/or elevation view
Initial
Are ladder and platform details correct.
Are grab ring details correct
Bill of Material
Do BOM tags match appropriate material
Are correct material thickness, schedules, grades, etc
shown
Is all material listed
Are descriptions sufficient for purchasing
Are nozzles lengths correct.
Job No.:
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