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Dear All, I would like to ask if the UT equipment was calibrated with 10mm transducer and during the site inspection, we used 5mm transducer, do we need to calibrate again the equipment as per ASTM E317?

Dear Colleagues, I would to know how to weld a square bar made of SM45C (equiv. to ASTM A29-1045). What are the filler (TIG) or electrodes (SMAW) to be used if we will conduct repair welding? What is the required preheat temperature and if required PWHT? Thank you.

Good day Gents, I would like to ask for your technical advice when doing the pump/motor alignment. What causes the motor shaft to be hardly rotated at the start, but when partially rotated, it can be rotated by hand easily? We used sling belt wrap around the shaft with a scaffolding pipe to...

Dekdee, We cannot do RT because of the pipe thickness [(41.3 + Weld reinforcement)x 2] = approx. 92mm total thickness for double wall exposure. Our source has only 40 curies. Is there any ASME code interpretation with regard to this matter? Thank you.

Dear Gents, If conducting UT (weld) is only available from side since there's no space on the other side (just like welding end cap with 41.3mm thick). Is there a code consideration that if only one side is possible then we can consider one side UT check is acceptable? Thank you.

Dear Experts, I would like to know if there's acceptance criteria for the TBC spallation of gas turbine blades? Is there any reference codes or standards?

Dear Genetix, We are working under ASME Section IX. Thank you for the prompt response. Is your reference Table QW-256 (GTAW)?

Dear All, With regard to GTAW WPS, if the WPS mentioned that the filler wire diameter is 2.4mm but the available filler wire size for GTAW is only 3.2mm. Does we require to provide new GTAW WPS?

Dear Mr. Don56, I have search our file for the interpretation mentioned, but I cannot find. Can you send me the pdf file on that interpretation? Thank you.

Dear Colleagues, I would like to ask if we required to qualify our a technician before he can do UT thickness check on tubes or pipe? Any code requirements for operator concerning thickness check? Since our unit also design only for material thickness verification. Thank you.

Dear Experts, Our plate welders are qualified with SMAW process. We plan to used FCAW (pre-qualified WPS), is there a required re-qualification for our welders?

Dear Gents, I would like to ask for the acceptance criteria of pull off testing using dolly (Hydraulic Adhesion Tester)? We have applied primer, intermediate and top coat after we conduct pull off test after 2 weeks. The result of the pull off test is 5 MPA. Is this acceptable?

Dear Experts, With regard to remelt of welding bead (root) using GTAW process, is this acceptable in ASME codes? Please provide me a technical explanation. Thank you!

Dear All, When conducting hardness test on P91 pipe, the hardness value is less than the requirements of our project. Our company sets a range of 190-265 Hv hardness of the base metal, but some of our reading is less than 190 Hv. I would like to know the correct surface preparation in order to...

We have prepared a derusting procedure which includes circulating the chemical for a couple of hours and drained the derusting agent to a sewer and flush with water. Actually, these tubes suffer rusted interior surface which are stored in our warehouse, and we would like to remove the rust...

It means that there's a tendency that it will harm the tubes if the instruction is not executed correctly?

Dear All, We are planning to use Rydlyme Descaler as a way of removing internal surface rust of tubes, but we want to know if this Rydlyme solution will not make a negative effect on the tubes. Our tubes are made from SA-213 T91. Does the rydlyme solution will not react to the chromium content...

Thank you Metengr and EdStainless! Mr. EdStainless, What would be the required preheat temperature, heating and cooling rate, soaking time and temperature during PWHT?

Dear All, Can anyone help me in finding the required filler wire when welding material made of X19CrMoNbVN11-1? Thanks.

Thanks metengr! Is there a written theory that if we keep the relative humidity below 20% and continuous hot air blowing in order to avoid rust? In this condition what is the percentage of oxygen?