boiler pipe welding distance requirements

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What are the standard requirements on the proximity of ...

BS 4515 Specification for welding of steel pipelines on land and offshore (Section 11) states that the proximity of weld toe-to-toe distance shall not be less than four times the pipe thickness. BS 2971 Class II arc welding of carbon steel pipework for carrying of fluids (Section 10) states that if design factors are such that the meeting of more than two welded seams cannot be avoided then appropriate

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ASME B31.1: Power Piping Code | PIPING GUIDE

As explained earlier the BEP is required to meet administrative jurisdictional requirements of ASME Section I; however pipe connections meeting all other requirements of ASME B31.1 but not exceeding nominal size (NPS) ¹ may be welded to external or headers without inspection and stamping required by ASME Section I.

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Basic Weld Inspection - Part 1 - National Board of Boiler ...

The manufacturer or repair organization (certificate holder) has indicated on the job drawing that a weld joint is to be prepared with a 60-degree bevel and root gap of 1/16 inch. Unless the bevels are milled on precision machinery it is doubtful they will achieve an exact 60-degree bevel as indicated.

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What are the standard requirements on the proximity of ...

Minimum distance between weld toes. Notes. BS 2633:1987. Ferritic steel pipework. 4t. t= nominal thickness of the pipe See below for notes on attachment welds. BS 4515:2009. C-Mn pipelines. 4t. t= pipe thickness. BS 2971:1991. Carbon steel pipework. Agreed by parties-PD 5500:2012. Pressure vessels. 4e or 100mm whichever is greater. e= design ...

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allowable spacing between adjacent welds in 8" pipe ...

Nov 12 2004 · What you must consider is the effect of the opposed residual welding tensile stress on the pipe between the circ. welds. There is sufficient distance between the welds to assure that a design to ASME VIII or B31.3 will not be compromised. I would not be concerned with your design.

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34 Pa. Code Subchapter B. Requirements For Boilers And ...

Clearances. (a) The following clearances apply for boilers installed after January 1 1960: (1) The minimum clearance around each boiler must be 30 inches with at least 6 feet clearance from the floor to overhead obstructions. (2) The minimum clearance around each

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