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Tank is newly built and hydrotested, not put into service yet but it is decided to add a repad for bolting a point load on the floor.We are trying to figure out hydrotest requirement apart from floor vaccum test. We will limit repad size to exempt hydrotest. As this is not a major repair we may...

Hi We are planning to add a 6"- 12" repad on the floor of a self supporting conical roof water storage tank. A point load will be connected at that location, away from critical heated affected zone. Do we need to conduct hydrotest after that. As per 9.3.3, pad can be added complying with NDE...

Vessel nozzle flange is the jurisdictional limit after that any piping can be connected.There is no specific rule but as littleinch mentioned, check your P&IDs for piping class. Based on pressure, design temperature, pipe material being used, pipe thickness can be calculated. Lightseeker

Hi geliberman, You need to be more specific about high temperature service as Annex M provides upto 260 deg C.Let's know your design temperature.

Hi Folks, We have hydro tested an API 650 tank and now thinking of cutting a nozzle length for shipping purpose, Is there a way we can extend it back to original length later on without a hydro test again. Relevant clause in API 650 is Per API 650 section 7.3.5, "after completion of the...

Hi Folks, I am trying to figure what fire suppression system will be required for pump station building, 500-1500 sq. m covered area without water supplies (manned/unmanned), housing 4-6 crude oil pumps. NFPA 30, ch 18 - flammable and combustible liquid handling and transfer, seems very close to...