×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

ESD Requirement - Code or Specific Risk Reduction

ESD Requirement - Code or Specific Risk Reduction

ESD Requirement - Code or Specific Risk Reduction

(OP)
Are there instances where codes call for ESD's just because it is good safe practice as opposed to ESD's that are installed to reduce risk to a quantified level?

If so, can you provide your insight on the differences between standard ESDs for code and ESDs for specific risk reduction?

We have various ESDs (PLC's with SD valves in many cases) throughout our facility for which I have no quantified basis for their existence.  I cannot say whether they were installed after a risk assessment determined the need for additional risk reduction or for some other reason.

I am trying to figure this out so I can determine what type of documentation, PM, testing, etc is needed for these.

Thanks in advance!!!

RE: ESD Requirement - Code or Specific Risk Reduction

Ask BP about the idea of having redundancy on critical applications.  Not law in the US, but it is in most places.  I think you basically have to look at cause and effect, as well as other failsafes in place.  If it is for pressure for example, is there a PSV there?  If so, probably safe.  If not, you might want redundancy.

RE: ESD Requirement - Code or Specific Risk Reduction

Different clients implement different corporate standards that often supplement the industrial code requirements and different industries use different codes (Food processing is different than offshore gas processing).  Others are involved in optional costs.  Offshore measurement devices and control systems based upon API RP 14C make for a great starting point for similar onshore facilities.

RE: ESD Requirement - Code or Specific Risk Reduction

There are fields that require an ESD after any schedule change even.  So in a gas well you would have to have one off the well head (and potentially a down hole ESD as well), at the separator, at the line heater, and prior to the pipeline.

RE: ESD Requirement - Code or Specific Risk Reduction

risk analysis dictates on shore OSHA jurisdictional facillities, otherwise they are under DOT jurisdiction which has prescriptive rules for overpressure protection.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources