[SystemSafety] LOPA

[W.L. Mostia]

I qualified my words because I cannot speak for all the industry.  However, my experience with several large refining companies and experience in consulting in the area of process safety is that most all use two slide-gate valves.  Maybe some other people on this list with more experience could speak to their experience in this regard.

William (Bill) L. Mostia, Jr PE
ISA Life Fellow, TUV FS Engineer
Principle Engineer
WLM Engineering Co.

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From: paul_e.bennett at topmail.co.uk<mailto:paul_e.bennett at topmail.co.uk>
Sent: Wednesday, February 17, 2021 11:09 AM
To: systemsafety at lists.techfak.uni-bielefeld.de<mailto:systemsafety at lists.techfak.uni-bielefeld.de>
Subject: Re: [SystemSafety] LOPA

On 16/02/2021 at 5:56 PM, "W.L. Mostia" <wlmostia at msn.com> wrote:
>
>It is fairly common industry practice to have two slide gate
>valves for this service.

I am glad that it is, at least, fairly common practice, but I would hope
that it might be more widespread practice than that.

Regards

Paul E. Bennett IEng MIET
Systems Engineer
Lunar Mission One Ambassador
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