Dear All
I would like to know the procedural requirements when asme coded pressure vessel/ boiler
are decommissioned /scrapped like Informing National Board/AI etc/
Thanks in advance
Sree60
Hello members
We are looking for a facility in South east Asia ( malaysia/ singapore and nearby places) which can
arrange for mechanical run test of a screw compressor ( kobelco make).
The compressor which was to be commissioned was stripped and overhauled.
Any info will be greatly...
Hello members
I would like to have clarification with regards to shaft alignment tolerances mentioned in API 686 second edition dec 2009 clause 5.4.6.2 which states"When using reverse rim ( dial) indicator methods or laser equipment that resolves alignment into reverse rim equivalent readings...
Dear Members
Would like to know if hydrotesting of ASME Coded vessels ( VIII Div 2) can be done for more than one vessels together.( 2 vessels in our case) The hydrotest pressure is same and vessels are identical.An interconnecting hose will be used to connect the vessels. Is there any extra...
Members
This is an old topic discussed earlier . (thread292-225652) Safe distance during hydrotesting.
The formula discussed was
safe distance = (0.15) x (D) x (a)^0.4 x (p)^0.6
where D - internal diameter (m)
a - length / diameter of piece (m)
p - test pressure (bar)
The...
Hi members
The pressure vessel ( in service) nozzle welds are required to be tested by manual UT . The vessel is PAINTED. Can UT be performed over paint? The calibration is always done on an unpainted reference block. How is the compensation done for the error introduced due to the paint . Any...
Hello members
A query related to safety during hydrotest of pressure vessel.The hydrotest pressure is 285 bar. Are there any guidelines for safe cordon off distance for various pressures during hydrotest?
For lower pressures we used to maintain arond 2 metres cordon off distance. since this...
Hi Members
We have a situation where the Stainless steel pressure vessel having internals and built to ASME Sec VIII div 1.
is required to be hydrotested ( test pressure -12 bar)with all the internals fitted. is there any precaution which needs to be taken apart from proper bolting of internals...
Hi Guys
Can anyone direct me to the tolerance for the following in pressure vessels built to ASME Sec VIII Div 2:
1) Vertical vessel base ring tilt & levelness
2) Horizontal vessel skirt base plate tilt and levelness
Is there any reference in sec VIII?
Thanks in advance
Sree
hello members
FOR SOUR SERVICE Our client specification stipuilates "Material shall meet the requirementsof Nace MR0175/ISO15156"
The material test certificate does not have this confirmation statement as above but the chemical properties and hardness values are meeting the requirement of Nace...
Hi Members
For a pressure vessel built to ASME Sec VIII, is it allowed if shell (15mm thk ) circumferential joints with excessive root gaps upto 10 mm are welded by using temporary backing strips.Normally the excess root gaps are corrected by buttering the bevel ends.Joint detail is is single...
Hello Members
We have a 3in forged nozzle ASTM A 105 Clad with 3 mm SS316L attached to the shell of clad vessel HP separator.
The clad thickness specified is 3 mm.As per approved drawing the bore of base metal of forged nozzle is 73.66 mm and inside dia after cladding is 67.66 mm (73.66-6mm)...
Hello Members
The specification for manufacture of coded pressure vessels
stipulates that if the dish head (SA 516 Gr 70 2:1 semi ellipsoidal)is made of more than one plate, the seam joint shall be 100% radiographed prior to forming.In a previous project the requirement of 100% NDE requirement...
The client specification for hydrotest of pressure vessels states that"All hydrostatic tests shall be done in presence of AI/companys's authorised representative.
Vessels shall not be previously tested by the vendor.
In what way is the last line above(Vessels shall not be previously tested by...
Hi members
In one of our offshore projects while reviewing the material test certificates for 10 In Sch 40 90 deg elbows ( 9.27 mm) we have found from supporting documentation that the raw material for these elbows is 6in Sch 80 ( wall thk 11.1 mm)pipes. we have doubt on genuineness of the...
Members
I would like to have inputs on the following related to NDE qualification:
As per contracts in one of our Job EN473VT Level 3 inspectors are reqquired. We have AWS CWI and CSWIP 3.1 inspectors. Are they equivalent to EN qualification?
If so are there any documents to support this/...
Hi members
I would like to have some wite up on Shpbuilding
ENVIRONMENTAL PROTECTION DESIGN
The subject is CO2 Blowing Cargo Containment System - HCFC free foam.
can anyone help me on this?
Thanks in advance
sree60
Dear members
In one of our project specifications for Piping the requirement for Radiography is spelt as under:
"100% of welds in hydrocarbon service shall be radiographically inspected.This shall include all lines classified as process lines,instrument gas,utility gas,diesel fuel,fuel...
Dear members
I need a clarification on torque values .
I have a torque table which says that
for 8In bolts torque values are Min 8Nm and
Max 10 Nm .These values are given under a table column which reads serrage electrique / rondelle contact
Similaly for same size under serrage mecanique /...
Dear members
In one of our offshore project works, there is a requirement
for E&I inspectors to have EEHA ( Electrical Equipment Hazardous Area) certification.Where can one get this certification especially in asia? Is there any certification examination or is it only training?
Any help will be...
