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!

*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.

Jobs

Startup checklist after abnormal shutdown

Startup checklist after abnormal shutdown

(OP)
I am in the process of creating a procedure and a checklist that should handle startups after abnormal shutdowns in our chemical plant. I need to have a multidisciplinary team sign off authorizing the startup.
We will consider as "abnormal shutdowns" only those that are historically in-frequent, like significant mechanical, electrical or quality issues, power outages, significant equipment damage, etc. It will not handle shutdowns due to SIS trips, relief valves or rupture disks blown, etc (these are emergency shutdowns based on our definition).

I thought about questions related to
-line brakes
-WorkOrders completed
-interlocks by-passed
-MOCs implemented

Can the group give me ideas on what questions I should have in my Startup Checklist After Abnormal Shutdown?
Thank You!

RE: Startup checklist after abnormal shutdown

Do you have a checklist for startups after planned maintenance? I would copy most of those..

some things (may or may not be applicable) come to mind: open ends audit, critical insulation reinstalled, condensate drained to reduce hammer risk, LOTO cleared..

RE: Startup checklist after abnormal shutdown

2
You must have a "Recovery from Abnormal Shuutdown" section.

Your plant "knows" what a normal shutdown condition is, and how you got there. (Vented tanks, cooled down, insulation not remvoed, flanges not broken, liquids all drained, steam system cooled down, etc, right? )
You know what a "normal startup" from a maintenance outage is: Fill everything, check electric lineups, checks drains, steam traps, heat up the boiler, vent traps, discharge waste product (product not meeting spec's), etc.

So, what happened during the emergency? What broke, what spilled, what DIDN'T spill or drain that cooled in place, what got plugged up or froze in place, where is the undrained condensate sitting waiting to become a water hammer, where is cold product not reacted or partially reacted? During the emergency repairs, what got broken, what else was loosened, what was tagged out or isolated that NOW needs to be checked with a one-man or two man lineup? What electronical programs/warnings/alarms need to be reset? And what electronics need to be vented or protected (vacuum gages or controllers not isolated properly?)

Before you startup to normal, you MUST figure out what the CURRENT ABNORMAL conditions are.

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close