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@DriveMeNuts: Thank you, I see Appendix H of API-530 and now searching the ASTM DS6S2 that is behind the Figure E.5 of API-530. I hope I can derive average stress rupture at test temperature and test duration (Test temperature and duration are embedded into LMP). Test less than 20000 hours...

Dear Experts How to decide test temperature and stress (i-e test matrix) for creep rupture stress test (also sometimes referred as accelerated creep testing). Material is SA-213-T22, operating temperature 500C, OD 31.8 mm, Thickness 4.0 mm. Boiler is in-service since 1983. Original Code of...

Just one point to add, when sub-size specimens option is selected, lateral expansion in addition to absorbed impact energy shall also be reported. Fully agreed with David339933 that sub-size specimens are not mandatory for the subject scenario Javed Nasir Inspection Engineer Technip-France...

Dear Experts, Please advise integrity assessment or in-service inspection/testing code for in-service non-metallic piping and non-metallic vessels. Javed Nasir Inspection Engineer Technip-France Abu Dhabi

The reference (ASME Sect VIII Div2, Appendix4) only appears in 2004 and earlier editions of ASME Sect VIII Div2. In 2007, VIII-2 was re-written and the above mentioned reference you cannot find in 2007 and later editions. Javed Nasir Inspection Engineer Technip-France Abu Dhabi

I have couple of questions on Part 4; API-579-1 (Edition 2016) 1- If length for thickness averaging (computed from equation 4.6) is more than vessel length, how thickness averaging can be performed in this situation? This situation often arises when Q=50 and Dml is large. 2- If length for...

5.8.1.2 requirements are applicable only to materials in Groups IV, IVA, V or VI and are NOT required to meet for I, II, III and IIIA. See below interpretation (it will provide the intent that 5.8.1.2 requirements are only for the material groups IV or higher), old reference of clause 5.8.1.2...

I have a question on Figure 10.3 (ASME FFS-1/API-579-1) Material (SA-516-70) is exposed to a temperature 1500F for 45 minutes due to fire incident. Figure 10.3 enlists the curves up to a maximum temperature 1200F. How to make use of Figure 10.3 in this case? Thanks. Javed Nasir Inspection...

Only one point to add, weld strength reduction factor is not applicable for carbon steels as per PW-26 of Section I Javed Nasir Inspection Engineer Technip-France Abu Dhabi

Himanshu See UW-6(a) Section VIII Division 1....non-mandatory guidance on this subject. Javed Nasir Inspection Engineer Technip-France Abu Dhabi

Lowest stress ratio is equal to allowable stress value in tension at test temperature divided by allowable stress value at design temperature. Generally it is 1 upto 250C. Javed Nasir Inspection Engineer Technip-France Abu Dhabi

TSG4 Plant got fire due to leakage of propane. Hardness survey was performed on affected piping, material of construction is A671 CC65. Minimum hardness value we did measure 90 and max 129. Average is 114. Almost 500 readings were taken on 12meter pipe. Javed Nasir Inspection Engineer...

Good evening. I have question on Table 2E.1 (by using this table tensile strength can be estimated by using hardness value). If hardness value is 90 BHN. Lowest value as per Table 2E.1 is 114 HBN. How to estimate tensile strength for 90 BHN? table does not enlist lower than 114 BHN. Any idea...

Dear Pradip, agreed with you that there are many process concerns, stress corrosion cracking concerns etc. Say if none of them is applicable. To make the question simple and straight forward, only Table 331.1.3 is a concern. Is it correct that 40 mm control thickness (P-No.1 Group No.1) is...

Dear Pradip, Thanks for your valuable comments. Say PWHT is not required due to Point No 4. AS I understand PWHT is not required even control thickness is over 38 mm provided that preheat is applied as required by Table 331.1.3. Do you agree? If it is so, it looks strange when compared with...

Dear Code Users, Is it correct that as per 2014 Edition of B31.3, For P-No.1 materials PWHT is not required for all thicknesses (even if control thickness is over 38 mm) provided that a preheat of 95C is applied (for nominal thickness over 25 mm )and multiple layer welds are employed (for...

s there any In-Service Inspection Code/Standard for FRP/GRP Tanks/Vessels/Piping? Any European/American Code will suffice. I have found FTPI-7: FRP Tanks and Piping Institute Recommended Practice for In-Service FRP Tanks. ASME RTP-1 and ASME BPVC Section X are for the new construction. ASME...

ASME Section I Edition 2015, End Note No. 10 is mentioning factor of safety 4 to 5 on tensile strength but from year 1999 and onward FOS is 3.5 on tensile. (FOS had been 4 to from 1914 to 1998) I think Section I has not updated the end note? Counterpart of End Note 10 in ASME Section VIII-1 is...

Is there any In-Service Inspection Code/Standard for FRP/GRP Tanks/Vessels/Piping? Any European/American Code will suffice. I have found FTPI-7: FRP Tanks and Piping Institute Recommended Practice for In-Service FRP Tanks. ASME RTP-1 and ASME BPVC Section X are for the new construction. ASME...

As per Section VIII Division 2 Clause 4.1.3.3, pipe under tolerance shall be taken into account regardless the use and location of pipe (i-e regardless it is used as nozzle or as a shell etc). Since Rules of 1-10 are copied from Section VIII Division 2. So I think 12.5% shall apply to both...