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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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CSA C22.2 NO. 62841-2-6:22 – Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery — Safety — Part 2-6: Particular requirements for hand-held hammers (Binational standard with UL 62841-2-6)

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CSA C22.2 NO. 62841-2-6:22/A1:24 – Amendment 1:2024 to CSA C22.2 NO. 62841-2-6:22, Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery — Safety — Part 2-6: Particular requirements for hand-held hammers (Binational standard with UL 62841-2-6)

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CAN/CSA-C22.2 NO. 62841-2-5:16 (R2026) – Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery – Safety – Part 2-5: Particular requirements for hand-held circular saws (Bi-national standard with UL 62841-2-5)

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CAN/CSA-C22.2 NO. 62841-2-5:16 (R2026)/A1:26 – Amendment 1:2026 to CAN/CSA-C22.2 NO. 62841-2-5:16, Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery – Safety – Part 2-5: Particular requirements for hand-held circular saws (Bi-national standard with UL 62841-2-5)

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CAN/CSA-C22.2 No. 62841-2-4:15/A1:26 – Amendment 1:2026 (IDT) to CAN/CSA-C22.2 No. 62841-2-4:15, Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery — Safety — Part 2-4: Particular requirements for hand-held sanders and polishers other than disc type (Bi-national standard with UL 62841-2-4)

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CAN/CSA-C22.2 NO. 62841-2-4:15 (R2025) – Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery — Safety — Part 2-4: Particular requirements for hand-held sanders and polishers other than disc type (Bi-national standard with UL 62841-2-4)

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CSA C22.2 NO. 62841-2-3:21/A1:26 – Amendment 1:2026 to CSA C22.2 No. 62841-2-3:21, Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery — Safety — Part 2-3: Particular requirements for handheld grinders, disc-type polishers and disc-type sanders (Binational standard with UL 62841-2-3)

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CSA C22.2 NO. 62841-2-23:25 – Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery — Safety — Part 2-23: Particular requirements for hand-held die grinders and small rotary tools (Binational standard with IEC 62841-2-23)

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CAN/CSA-C22.2 NO. 62841-2-21:18/A1:26 – Amendment 1:2026 to CAN/CSA-C22.2 No. 62841-2-21:18, Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery – Safety – Part 2-21: Particular requirement for hand-held drain cleaners (Adopted amendment 1:2024 to IEC 62841-2-21)

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API TR 17TR3

API TR 17TR3, 1st Edition: An Evaluation of the Risks and Benefits of Penetrations in Subsea Wellheads Below the

CDN $287.00

An Evaluation of the Risks and Benefits of Penetrations in Subsea Wellheads Below the

SKU: 08856ee1945a Category:

Description

This document provides an evaluation of the risks and benefits of allowing penetrations in subsea wellheads below the blowout preventer (BOP) stack so annuli other than the production tubing (commonly referred to as the “A” annulus) could be monitored. Current industry standards (API Spec 17D and ISO 13628-4) for the design of subsea wellheads prohibit penetrations below the (BOP) stack. In contrast, US regulations (30 CFR 250.517) require that all annuli be monitored for sustained casing pressure and that every occurrence of sustained casing pressure be reported immediately. The study concludes that the risks outweigh the benefits since the risk of maintaining the pressure barrier using a wellhead with penetrations is approximately 2.5 times that of a system without penetrations.

Edition

1

Published Date

2004-11-01

Status

Current

Pages

134

Language Detail Icon

English

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Abstract

This document provides an evaluation of the risks and benefits of allowing penetrations in subsea wellheads below the blowout preventer (BOP) stack so annuli other than the production tubing (commonly referred to as the “A” annulus) could be monitored. Current industry standards (API Spec 17D and ISO 13628-4) for the design of subsea wellheads prohibit penetrations below the (BOP) stack. In contrast, US regulations (30 CFR 250.517) require that all annuli be monitored for sustained casing pressure and that every occurrence of sustained casing pressure be reported immediately. The study concludes that the risks outweigh the benefits since the risk of maintaining the pressure barrier using a wellhead with penetrations is approximately 2.5 times that of a system without penetrations.

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