Pressure Vessel Design Check ListDrafting P.M Eng.

Check List

Initial 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

Does saddle have a repad. Thickness correct?

Correct saddle location from reference line

Bolt holes.: size, qty, location, slotted, etc.

Grounding lug required?

Saddle bearing angle is correct. Min 120°. See ASME calculations

Initial Elevation View

All nozzle location and elevation shown

Lift lug location.

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

Will lug placement interfere with lift? Will slings and shackle clear all piping, etc. during lift

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

Hole size correct

Lug dimensions correct: width, height, radius, thickness, etc.

Weld detail are correct.

Are repads required

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 lugs sized correctly for vessel. Reference customer spec. for sizing criteria.

Will shackle fit over lugs with sufficient clearance for sling, another shackle, etc.

Are repad dimensions correct with appropriate weld details. See ASME calculations

Stack height correct

Are TSH connections provided

Are bend details provided

Will burner mount without interfeence

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.

Initial Oil Collection Heater Details

Pipe size and schedule correct

Size, location and number of holes

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.

Check to make sure that top mounted level transmitter probes do not contact fire tube supports or contact fire tube. Need 6" clearance minimum.

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.

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.

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

Are contact rod details correct

Initial 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 platform details correct.

Are grab ring details correct

Initial 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.

Make sure reference line and center line are shown on drawing.

Is grid Bill of material correct. # of grid plates, # of insulators, support straps, u-bolts, nuts, washers, unisturt, spring nuts, etc.

Is there an opening or clearance for top mounted level transmitter probes to penetrate grid section

Are ladder and platforms shown on an orientation and/or elevation view

Job No.:

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