Api Rp 551 Pdf -
Project engineers use Section 4.3.2 to specify the correct pressure transmitter turndown ratio. The RP recommends limiting turndown to 10:1 for DP transmitters to avoid exceeding 0.1% of span drift—a detail frequently missed by junior engineers.
Visit the API Publications store today. Search for "RP 551," select the PDF with multi-user license if needed, and elevate your process measurement standards to the industry’s gold standard. Disclaimer: This article is for informational purposes only. Always refer to the latest official edition of any API Recommended Practice for actual engineering decisions. Prices and edition dates are subject to change. api rp 551 pdf
If you have been searching for information regarding an , you are likely an instrument engineer, a project manager, or a safety auditor needing authoritative guidance on process measurement. This article provides a deep dive into what API RP 551 covers, why it matters, how to obtain a legitimate copy, and the best practices for implementing its standards. What is API RP 551? Officially titled "Process Measurement," API RP 551 is a recommended practice that provides guidelines for the selection, installation, operation, and maintenance of instruments used to measure pressure, temperature, level, and flow in refining and petrochemical services. Project engineers use Section 4
When a level transmitter fails, investigators compare the as-found installation against figures in API RP 551. A common root cause is an undersized thermowell leading to vortex shedding failure—a scenario illustrated in the RP’s appendices. Comparison with Related API Documents To fully appreciate API RP 551, you must understand how it fits into the API instrument ecosystem: Search for "RP 551," select the PDF with
| Document | Focus | Relationship to RP 551 | | :--- | :--- | :--- | | | Process Measurement (sensors) | The "what" to measure and install. | | API RP 552 | Transmission (signal systems) | Follows RP 551; covers I/O and wiring. | | API RP 553 | Control Valves (final elements) | Complements RP 551; after measuring, you must control. | | API RP 554 | Process Control Systems (DCS/PLC) | Higher-level automation built on RP 551’s sensors. |
During a refinery shutdown, maintenance teams reference Table 6 (Level Diagnostic Checks) to systematically test displacer cages for corrosion pitting. The RP suggests radiography of level bridles every 6 years.
“There are still so many places for Bourdain to visit in Vietnam, so many more dishes for him to try, so many more episodes for him to make.”
That is the same thought and reason why I haven’t gone back to any episode or short clips of him, which appear in my YT feeds every now and then.
Hi Giang,
Yes, I know what you mean, and I know many other Bourdain fans who feel the same.
Best,
Tom
I sometimes wonder why people often acknowledge people’s death day (religious reasons aside)? Generally speaking that’s the worst day of a persons life and the saddest day for their loved ones and admirers.
With that in mind Anthony’s birthday is coming up on June 25 (1956), the day this intrepid traveller and lover of people was born!
Hi S Holmes,
Yes, it’s because in Vietnam ‘death days’ are commonly celebrated. Hence, I’ve chosen to remember Bourdain on his ‘death day’ in the context of his love of Vietnam.
Best,
Tom
Many Americans of a certain age only saw Vietnam in context with the American War. That view persisted in American culture and continued into the next generation. Bourdain was the first to see Vietnam as a unique country. I don’t think he ever mentioned the war in his programs.
Hi Paul,
Yes, I know what you mean, and in many ways (most ways, in fact), I agree that Bourdain painted Vietnam in a different context to what many Americans were most familiar with – that being war. However, he could never let the war go from his Vietnam episodes: Bourdain references the war – either directly or through cultural references, such as movies – in most of his Vietnam shows. This is totally understandable, but I personally looked forward to an episode that left the war out completely, thus focusing only on present-day Vietnam.
Best,
Tom
I’ll have to re-watch some of the episodes. I guess it was just my first impression that Bourdain dealt with Vietnam on its own merits as a young country with an ancient past and complex culture.
Thank you for your close and heartfelt reading of Bourdain’s odysseys to Vietnam.
I have watched the “Hanoi” episode 5 times with deepening appreciation and sentiment; it is my favorite of what I’ve seen of his work.
The episode is an apostrophe to gain — Vietnam’s as it heals from its history and ascends the world stage toward its future — and a eulogy to the Obama and Bourdain era, where sincerity and civility, for a short time, were given a stage.
“Is it going to be all right?”
While Obama and Bourdain were tour guides, we could believe it would.
Hi Jeff,
Yes, I agree, it’s a very poignant episode – it was at the time, but even more so now, with the knowledge of what was about to happen: to Bourdain, to American politics, to the World.
Best,
Tom
This is amazing Tom, just found ur blog after following you quite sometime in twitter. Anthony is one of my idol esp for Vietnam. Keep up the good work as always and thanks.
Thank you for the kind words!
Great to hear you admire Bourdain too. I hope you enjoy watching/re-watching these episodes.
Best,
Tom
Thank you for a great article as always!
It made me miss my hometown even more.
Thank you, Bao Tran 🙂
Thanks, Tom, for a moving and informative article that has me regretting that I didn’t enjoy Bourdain’s work when he was with us. He was a one-off for sure and we are all poorer for his absence.
Thanks, John.
This is wonderful, Tom.
A great tribute to Bourdain and Vietnamese food.
I never saw his programmes but have read some of his books which i greatly enjoyed.
Thanks
Vicki
Thanks, Vicki.
Yes, I enjoy his writing style too. I hope you get a chance to watch some of his TV shows sometime too.
Tom
If you have a Google account with a US credit card you can buy episodes of No Reservations and Parts Unknown a la carte for $2 or $3 (SD or HD respectively) on Google Play. Here’s a link:
No Reservations:
https://play.google.com/store/tv/show/Anthony_Bourdain_No_Reservations?id=cI-ABS8T6RA&hl=en_US&gl=US
Parts Unknown:
https://play.google.com/store/tv/show/Anthony_Bourdain_Parts_Unknown?id=qZqWbgwkJcc&hl=en_US&gl=US
Thanks, Ben.
Man, great review.
I didn’t know Tony because I’m Spanish and I was not interested about him. I think I first know about him when I came to Vietnam.
I have the feeling that Vietnam is changing very fast, but mostly I don’t see it as an inconvenient but something good. We will see how things evolve in the future.
I agree with Obama, eventually everything will be fine. The virus will be over and we will continue eating food with family and friends, and be able to travel!
I miss Spain and Thailand!
Thanks, Javier.
Yes, I hope so too.
Best,
Tom