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  1. Vegas Consulting

    Classification of Swing Check Valve Opening Type per API 6D Clause 4.4

    You're right to question this — it's a good observation. Even though the bore and seat diameter match Table 1 (which typically suggests a full-opening valve per 4.4.2), the fact that the disc obstructs around 25% of the flow area during operation means it cannot be considered "full opening."...
  2. Vegas Consulting

    API 650_Polygon shape for Bottom plate

    No, this clause is not mandatory for sketch plates. It specifically applies to annular plates as per API 650 Section 5.
  3. Vegas Consulting

    API 5L mass per unit length

    The difference arises because the API 5L formula includes a standardized conversion factor (0.02466) that accounts for manufacturing tolerances, pipe ovality, and other factors. In contrast, calculating weight using density (7850 kg/m³) assumes an ideal solid material without considering these...
  4. Vegas Consulting

    API 650 Tank Rebuild - Type and quantity of weld inspections

    The percentage of welds to inspect depends on your project requirements and past issues. Based on API 650: Liquid Penetrant Testing (PT): Typically 10–20% for non-critical welds and 100% for critical areas. Ultrasonic Testing (UT): 100% for critical welds; spot checks (10–20%) for others...
  5. Vegas Consulting

    API 5L vs CSA Z245.1 for DWTT

    Yes, you are correct. The CSA Z662 standard, which governs oil and gas pipeline systems in Canada, includes references to various testing methods for materials, including fracture toughness and drop-weight tear testing (DWTT). While CSA does not have a document that is entirely equivalent to API...
  6. Vegas Consulting

    API 5L- pipes out of dimenisons

    Hello, If the requested X70 API 5L pipe dimensions (18" x 92mm) are outside the permissible limits in Table 9 (e.g., maximum WT for this OD is 45mm), here’s how you can proceed: Deviation Agreement: If the client insists on the dimensions, both parties can agree to a deviation, but this must be...
  7. Vegas Consulting

    Pressure Testing of Valves

    Good morning! Here are clear steps for each valve test you mentioned: 1. Low-Pressure Closure Test Objective: Checks for leakage at low pressure. Procedure: Close the valve. Apply the required low-pressure test fluid (usually air or water) to one side of the valve. Check for leakage on the...

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