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new bolting spec problem

Abba-Gana, Abubakar
 
  • Hi folks'
    all flanged connections for 4 inch and below have no bolts. changed several bolt specs but problem persists. Can some one give a hint pls.
    I am using new bolting method 11.6 sp4

    The same set of spec and bolt spec. work in another project.
  • Make sure that the flange SCOMs have a Blrfarray set.

    If they are set then what error message are you getting in Isodraft?
  • Blrfarray set for all . message cannot allocate bolt for falnge.
  • pitch,
    below is the isodraft error message please.
    (61:394) Cannot calculate bolting requirements for joint FLANGE 4 of BRANCH 1 of PIPE 1 of ZONE /BOLT-TEST - FLANGE 3 of BRANCH 1 of PIPE 1 of ZONE /BOLT-TEST
  • Not being able to see your catalogue, specs, and  design here is What to look for to start.

    1. All components in the joint need a blrfarray except wafer fittings and gaskets. This includes Nozzles.
    2. All blrfs in the joint should  have the same number of bolts
    3. Bolts for matching holes should be the same diameter  (1=1, 2=2, etc)
    4. There should be an entry in the bolt spec for a bolt of the correct diameter.
    5. The BOLT in the Bolt Spec should have ab styp to match the bolt type set in the Blrf (BOLT, STUD, MACH, etc) .
  •  

    Fullscreen 266274BOLT-SPEC-11430.txt Download 
    $S-
$(  BORE UNITS INCH  $)
$(  DISTANCE UNITS MM    $)

OLD SPECIFICATION /SGU-BOLT-11430-B7-B2H
VERSION 1151
MATREF =0
FLUREF =0
RATING 0.000
LINETYPE NULL
BSPEC =0
BLTM 'NEW'


HEADING
NAME       TYPE      BDIA SHOP BTYP  CATREF DETAIL MATXT CMPREF BLTREF
DEFAULTS
   -           -        -       =       =
*/BOLT:0.75 BOLT   0.75 FALS  STUD  /STUD /A193-B7-UNC-0.75 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-0.75
*/BOLT:0.75Y BOLT   0.75 FALS  STUY  /STUD /A193-B7-UNC-0.75 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLY-0.75
*/BOLT:0.75M BOLT   0.75 FALS  CAP  /STUD /A193-B7-UNC-M-0.75 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLM-0.75
*/BOLT:0.875 BOLT   0.88 FALS  STUD  /STUD /A193-B7-UNC-0.875 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-0.875
*/BOLT:0.875M BOLT   0.88 FALS  CAP  /STUD /A193-B7-UNC-M-0.875 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLM-0.875
*/BOLT:0.625 BOLT   0.63 FALS  STUD  /STUD /A193-B7-UNC-0.625 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-0.625
*/BOLT:0.625X BOLT   0.63 FALS  STUX  /STUD /A193-B7-UNC-0.625 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLX-0.625
*/BOLT:0.625Z BOLT   0.63 FALS  STUZ  /STUD /A193-B7-UNC-0.625 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLZ-0.625
*/BOLT:0.625M BOLT   0.63 FALS  CAP  /STUD /A193-B7-UNC-M-0.625 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLM-0.625
*/BOLT:1.125 BOLT   1.13 FALS  STUD  /STUD /A193-B7-8UN-1.125 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-1.125
*/BOLT:1.125X BOLT   1.13 FALS  STUX  /STUD /A193-B7-8UN-1.125 =0 =0 /SGU-MESC-11430-B7-B2H-SBOLX-1.125
*/BOLT:0.5 BOLT   0.50 FALS  STUD  /STUD /A193-B7-UNC-0.5 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-0.5
*/BOLT:1.0 BOLT   1.00 FALS  STUD  /STUD /A193-B7-UNC-1.0 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-1.0
*/BOLT:1.25 BOLT   1.25 FALS  STUD  /STUD /A193-B7-8UN-1.25 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-1.25
*/BOLT:1.5 BOLT   1.50 FALS  STUD  /STUD /A193-B7-8UN-1.5 =0 =0 /SGU-MESC-11430-B7-B2H-SBOL-1.5
$S+

  • On new retrial I get this error  '(42,65)   Question BDIA ( Answer 15.875 ) cannot be answered'     (any hint? )
  • can you also post a copy of the BLRF /SGU-STUD-150#-100-A
    or at least say what the BDIA is set to.
  • I suspect your problem is to do with metric/imperial units conversions in PDMS.

    I think I gave a list in the guide of how PDMS handles BDIA values and how they should be input.

    I suspect that if you switch to metric units and output the boltspec, the Imperial 0.625 values will be output as 15.88mm
    PDMS seems to prefer 2 decimal places in specs.

    If you use metric units and check the BDIA in the Boltset it will show as 15.875.


    So the fix would be to change 15.875 to 15.88.
    If this proves to be correct then other diameters may have the same problem.  (Check the table in the bolting guide)
    Generally PDMS catalogue is designed to work in Metric units for input and it is safer to work this way for INPUT and switch as required for OUTPUT.