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KEROSENE-CHALK TEST PROCEDURE
1. SCOPE:
This test procedure shall be used to check the weld joint of shell to annular
plate.
2. PURPOSE:
The purpose of this procedure is provide a necessary guide line to carry out oilchalk test to check the weld joint of shell to annular plate.
3. SURFACE PREPARATION:
The surface to be examined and the adjacent area within at least 1" shall be
cleaned thoroughly, must be dry and free from dirt, oil, grease, scale, welding
flux, spatters, paint and other foreign matter that could obstruct surface
openings or otherwise interfere with the examination.
4. APPLICABLE CODE:
API 650 Sec (Clause 7.2.4 (d)) / ASME Section V article 6).
5. PROCEDURE:
After completion of root weld from inside of the shell to bottom joint, apply wet
chalk solution by brush on the root weld uniformly.
Allow the weld joint to dry thoroughly and then spray diesel/ kerosene on the
opposite side of the weld (outside) by using the hand spray pump.
6. INSPECTION AND ACCEPTANCE CRITERIA:
After the application of the penetrant oil, hold it as per the instruction of the
Engineer-in-charge. (Duration time - 4 hrs for light diesel ,high flash point
penetrating oil) API 650 Cl 7.2.4 (d) Edition XI
th
.
Examine the root weld visually for the evidence of wicking.
7. REPAIR AND RETEST:
If any defect found then the same shall be repaired as per the approved
procedure.
Re examine the repair spot and additionally minimum 150mm. for repair spot on
both directions.
Repeat the process until there is no evidence of leaking.
After completion of the test thoroughly clean the joint from both sides for the
further welding.
8. INSPECTION REPORT:
Test shall be carried out jointly and to the satisfaction of the Engineer-in-charge.
Test to be recorded in the approved format.
What else can I help you with?
How can flanges be classified based on pipe attachment?
Flange joint is one of the methods of pipe joints. Piping and flanges are classified in different ways based on pipe attachment, Pressure-Temperature (PT) rating, facing, face finish. Below are the flanges based on the pipe attachments.Classification of flanges based on pipe attachment1) Slip-on Flanges:These flanges are welded on inside as well as outside to the pipe. They are generally forged type with Hub. They can also be fabricated from plates but without Hub.2) Socket-Weld Flanges:These Flanges are welded only on outside of the Pipe. They are usually used in small bore piping where the piping specification is socket weld. They are not used in severe services due to stagnation of fluid at the socket. Socket welded flanges shall be specified with connection pipe thickness to ensure proper bore dimensions.3) Screwed/Threaded Flanges:These Flanged are screwed onto outside diameter of the Pipe. They are used at locations where welding is not allowed. They are used in temperature range of 250 Deg to -45 Deg. The threads can be NPT (Nominal Pipe Threads) or BSPT (British Standard Pipe Threads) as required in the Piping specification.
Which US County has had most tornadoes?
The correct Answer to the question is Weld County, Colorado with 252 reported tornadoes (1950-2010).
What does oxygen have to do with welding?
Oxygen is an atmospheric gas that is unwanted in almost all welding processes because in it's molten state, metal oxidizes very easily and causes a weak joint. Weld surfaces are protected during the welding process to keep oxygen from contaminating the weld either by a shielding gas, flux, or in torch welding, the torches own exhaust. Occasionally however, oxygen may be added to the shielding gas mix in small amounts to stabilize the arc and reduce undercutting.
How do you fix your A Frame that attaches to your western snow plow?
To fix an A-frame on a Western snow plow, you may need to replace damaged parts, such as welds or brackets. You can weld any cracks or breaks, reinforce weak spots, or replace the entire A-frame if necessary. It's a good idea to consult the manufacturer's instructions or seek professional help for complex repairs.
What US counties have the most tornadoes?
all in the tornado alley... and they are parts of Texas, Oklahoma, Kansas, Nebraska, eastern Colorado and western Iowa, and is characterized by a high frequency of strong and violent tornadoes and a relatively consistent season from year to year okay ? The correct Answer to the question is Weld County, Colorado with 252 reported tornadoes (1950-2010).
How are weld joints tested?
One common method of testing welds is by X-ray.
Is post weld heat treatment is part of Non-destructive testing?
Post weld heat treat is done to bring back strength properties lost during welding. It is not related to non destructive testing
What is a tky weld joint?
TKY weld joints are tubular joints used for welding. They are expressly used for when fabrication of a structure is necessary.
What is the purpose of socket welding?
Socket weld joints are an easy and fast method of weld joints. Socket welding is preferred mainly on low pressure joints and small bore joints.
How does weld oxidation affect the integrity of metal joints?
Weld oxidation weakens metal joints by creating a brittle and porous layer that reduces the strength and durability of the weld. This can lead to cracks, leaks, and ultimately, structural failure.
Which one is stronger field weld or shop weld?
When done correctly it doesn't matter where a weld is made.
How do you test ultrasonic weld?
To test an ultrasonic weld, you can perform non-destructive tests like visual inspection for any visible defects, ultrasonic testing to check for bond integrity, and pull or shear testing to measure the strength of the weld. These tests help ensure the quality and reliability of the weld.
What is the required length for common weld bar joints?
Absorbs water and nutrients:))
What is the definition of dia inch of welding?
This is used differently in different countries. But generally, if a welder is contracted to do say 100 weld joints, of a 1" pipe, then the total work involved is 100" dia welding work. If 100 weld joints of a 2" pipe is 200 weld work and so on.
What is testing weld of ultrasonic?
Ultrasonic testing of welds involves using high-frequency sound waves to detect flaws or discontinuities in the weld material. This non-destructive testing method can help identify structural defects such as cracks, porosity, or lack of fusion in the weld joint. Ultrasonic testing is commonly used in industries like construction, manufacturing, and oil and gas to ensure the integrity and quality of welds.
6 inch weldolet welded to 12 inch pipe what is the inch dia involved?
The meaning of dia inch is the number of weld joints multiplied by the dia of a given pipe size, since the weld joints is on the 6" pipe, the calculations should be 1 weld x 6" = 6 dia inch.
What type of joints can be used for GI pipes?
Threading joint, weld joint, Flanges joint
