Also, how could one of the leading designers in HRSG type boiler's, whom have built these on the same design all over the united states, have been incorrect in every one they have built in the past. These are cookie cutters the same rules apply to every one. HRSG type boilers are not the same...
Guys this piping goes directly from the modules Which is boiler internal piping, to the Drums which is also Boiler Internal piping, how is it possible to have a two foot code break between the two.
Gentelmen,
I'm back with another issue, We are building a HRSG type boiler. My drawings supplied by the designer call the Interconnecting pipe, which connect the HP, IP, LP, drums to the internal modules as Section 1 Boiler Proper. My AI is calling this same piping Section 1/B31.1 wich...
Stanweld,
I am not an engineer, I am a quality control manager. However the engineering on this project are all recent graduates, and have very little experience in the power generation industry. Consequently we are not only the erectors but also assiting the engineers.
The phrase "common Practice" is in our contract specifications, under client notification. Basically refering to industry standards and common practices in similar instances.
I am leaning toward recommending 100% X-ray, simply because the pressure is high, and the temp is only 16ºF below Table 136.4 in ASME B31.1. However I need to make sure I'm standing on solid ground, as I would hate to be back charged for recommendation and implementation of NDT not required by...
Gentlmen,
I am reviewing or specs for the feed water system(discharge), and have a common practice question. According to our contract specifications we are required to assit the owner in recognizing areas or systems that normally require NDT, even if not specified by code.(@owners request) My...
metengr,
I have one more question about welding procedures. If I have a welder whom is qualified to a maximum thickness deposited of 1/2", once he reaches that amount of deposition, if another qualified welder continues for 1/2", can the original welder finish the weld if the remainder is less...
I have always been told to go with the higer grade material, but someone else said that E70S would work also. Are there any negatives using E70S, and does the preheat need to be equivlant to the to the P4 or P1 material.
I need to qualify a welding procedure for P1 to P4. The Material grades are as follows; SA 335 P11 to SA 106 Grade B. I am thinking the filler metas should be ER80S2 root&hotpass & E8018B2 remainder. Is this the best filler metal for this weld, and are there any negatives.
The filler metal we are using E9018B9, it is what the procedure calls out. The reason we are using P91 material is, that is what the engineering company specified. Thanks for the information, I was Pretty sure this weld was not a code weld. Stress Relief is under way already, so I'm sure that...
Yes I have a proper procedure, Actually the Pipe dummy leg is SA 335 P91, the Base plate is carbon steel. I belive PWHT would be benefical and is probably necessary for longevity of the weld. The line in question is a reheat header falling under Section 1. The debate here is, is this weld...
I am in the process of using localized Preheat on a non pressure attachment weld. I am using a manual log to record temp every 15 minutes, until weld is complete. The material is SA 335 P91 9 chrome. This is a pipe support weld, from dummy leg to base plate. I am pretty sure this is a non...
