ACCEPTANCE CRITERIA FOR RADIOGRAPHY USE PIPING

UNDERGROUNDTANKS &

PRESSURE VESSELPRESSURE

VESSELREFINERY

PIPINGPOWER BOILER TANKS PIPING PRESSURE VESSEL

TYPE OF SPEC.

API 1104

ASME B31.4

ASME B31.6

ASME SEC. VIII 100%

API-650 / API-620

ASME VIII SPOT

ANSI-B31.3 ASME B31.1 BOILER BS-2664 BS-2971 BS-5500

L.O.PMAX. 25.4MM NOT ACCEPTABLE NOT

ACCEPTABLED=0.8MM / L=36MM

IN 160MM LENGTHNOT ACCEPTABLE VERTICAL 0MM /

HORIZONTAL MAX.10% OF

THICKNESS

MAX 25MM IN 100MM NOT ACCEPTABLE

MISMATCH & L.O.P.

MAX. 50.8MM NOT ACCEPTABLE NOT ACCEPTABLE

NOT ACCEPTABLE NOT ACCEPTABLE SAME AS ABOVE SAME AS ABOVE NOT ACCEPTABLE

L.O.F.MAX. 25.4MM NOT ACCEPTABLE NOT

ACCEPTABLENOT ACCEPTABLE NOT ACCEPTABLE NOT ACCEPTABLE *********** NOT ACCEPTABLE

COLD LAPMAX. 50.8MM NOT ACCEPTABLE NOT

ACCEPTABLENOT ACCEPTABLE NOT ACCEPTABLE NOT ACCEPTABLE SAME AS ABOVE NOT ACCEPTABLE

INTERNAL CONCAVITY

DENSITY NOT TO EXCEED PARENT METAL DENSITY.

NOT ACCEPTABLE 2T/3 T= THK OF PLATE *************

NOT ACCEPTABLE VERTICAL 0MM / HORIZONTAL MAX.10% OF

THICKNESS

SAME AS ABOVE NOT ACCEPTABLE

BURN THROUGH

MAX. 6.35MM NOT ACCEPTABLE SAME AS ABOVE NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT ACCEPTABLE

ELONGATED SLAG

MAX. 50.8MM / MAX. WIDTH 1.59MM

PIPE 0<60.3MM MAX. 2T LENGTH

6.3MM FOR 19MM THK. T/3 FOR 19 TO 57MM. 19MM FOR THK >57MM

2T/3 T= THK OF PLATE

MAX T/3. T=THK OF THINNER SEC. TOTAL CUMULATIVE LENGTH

NOT TO EXCEED T/2 IN 6”WELD LENGTH.

WIDTH NOT TO EXCEED 1/16”

6.3MM FOR 19MM THK. T/3 FOR 19 TO 57MM. 19MM FOR

THK >57MM

MAX. 2T/3 TO MEET 19MM INDICATION <6MM ACCEPTED

SAME AS ABOVE 3MM FOR 50MM / 4.6MM FOR 50 TO

75MM / 6MM >75MM

ISOLATED & GROUP SLAG

MAX. 12.7MM/ MAX. WIDTH 3.17MM PIPE 0<60.3MM MAX. 2T

LENGTH

MAX. T IN A LENGTH OF 12T WHEN DISTANCE

BETWEEN INDICATION IS <6L. L= LONGEST

INDICATION.

2T/3 T= THK OF PLATE

SAME AS ABOVE MAX. T IN A LENGTH OF 12T. WHEN DISTANCE BETWEEN

INDICATIONS IS MORE THAN 6L. L= LONGEST INDICATION

MAX. T IN A LENGTH OF 12T. WHEN

DISTANCE BETWEEN INDICATION IS >3

TIMES THE LONGEST INDICATION

SAME AS ABOVE TOTAL LENGTH >100MM. MAX. WIDTH

4MM

CLUSTER POROSITY

MAX. PORE SIZE 3.17MM / GROUP

POROSITY MAX. SIZE 12.7MM

AS PER CHART / TABLE AS PER CHART / TABLE

AS PER CHART / TABLE

AS PER CHART / TABLE AS PER CHART / TABLE

3MM OR 25% OF WALL THICKNESS SUM NOT TO EXCEED 10MM

IN 25MM WELD LENGTH.

3MM FOR 60MM / 4.5MM FOR 50 TO 75MM / 6MM FOR

>75MM / 2% BY AREA

HOLLOW BEADNOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT ACCEPTABLE

CRACKSCRATER OR STAR

LENGTH < 3.96MMNOT ACCEPTABLE NOT

ACCEPTABLENOT ACCEPTABLE NOT ACCEPTABLE NOT ACCEPTABLE NOT ACCEPTABLE NOT ACCEPTABLE

UNDERCUTNOT TO EXCEED

1/6TH OF WELD LENGTH

NOT LISTED NOT LISTED 0.8MM OR T/4 NOT LISTED NOT LISTED NOT LISTED NOT LISTED

SOLID INCLUSION

NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED NOT LISTED