Car-seal for valve 6

[simplemath]

Valve size varies from 3/4” to 36 in.

Valve material is both carbon steel for utility piping and stainless steel valve for cryogenic service and non-cryogenic service.

I googled car seal and did not find much options. Some are galvanized CS band which, I think, may not be used for SS valve. Also plastic one can not last long.

I think best is SS car-seal but can not find one.

I am asking in general practice what type of valve car- seal is mostly used for oil and Gas industry.

Thanks

 

[BigInch]

"Car seal" is not a valve type. It is a method of indicating that a valve should remain in the position in which it is held by a sealing tag wired to lugs provided on the valve positioner. The same function is often provided by a chain and lock wrapped around the valve's handwheel and the nearest pipe, or some kind of similar implementation.

Just search for valves that can be used for low temperature applications. Once you find a suitable valve, simply specify whatever position locking device you need.

http://virtualpipeline.spaces.msn.com

"We can't solve problems by using the same kind of thinking we used when we created them." -Albert Einstein

 

[Zapster]

http://www.reecesafety.co.uk/Gate and Ball valve lockouts.htm

You will find SS car-seals at the above site

 

[BigInch]

So much for the lock and chain...

http://virtualpipeline.spaces.msn.com

"We can't solve problems by using the same kind of thinking we used when we created them." -Albert Einstein

 

[BigInch]

OK, still need a lock and chain for over 13".

http://virtualpipeline.spaces.msn.com

"We can't solve problems by using the same kind of thinking we used when we created them." -Albert Einstein

 

[JLSeagull]

In actual practice I see plastic tie-wraps used during commissioning.

42

 

[BigInch]

During commissioning, that's probably not a bad idea.

http://virtualpipeline.spaces.msn.com

"We can't solve problems by using the same kind of thinking we used when we created them." -Albert Einstein

 

[dcasto]

I've seen "official" Railroad cars eals used in plants. If a car seal was to be broken, there was a datbase with the unique serial number stamped in the SS band. The person that was permitted to break seal had to return it and it was kept on file as proof the correct valve was unsealed. They would also check quarterly to make sure all carsealed valves had thier seal in place.

It was a nightmare, but for large plants, a very safe system.

On smaller plants I used plastic with a tag so we can put an ID on them. My latest move has been to incorporate the carseal into the LDAR system. Our valves are numbered and checked for VOC emmisions. During this inspection we verify the valve is sealed in the correct position. We can break a seal under a work permit.

 

[Ashereng]

I don't see a problem with using a "plastic" car-seal. If the plastic has UV protection, it should last fairly long.

To be sure, I haven't seen many in the oil and gas industry.

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[simplemath]

Can someone recommend carr-seal manufacture website to look at?

 

[simplemath]

Can someone recommend US carr-seal manufacture website to look at? Thanks.

 

[BigInch]

Obviously you didn't give Zapstar that star.

http://virtualpipeline.spaces.msn.com

"We can't solve problems by using the same kind of thinking we used when we created them." -Albert Einstein

 

[davefitz]

as I recall, OSHA requires the locking car seal to withstand at least a 50 pound load . But if you are buying a new valve and this is the only way of isolating the system energy, the it is also required to provide a valve which is lockable ; the car seal would only be maintenance shortcut that is permitted providing the safety program has appropriate training blah blah blah.

 

[dcasto]

just googled here's first one.

http://www.securityseal.com/international/carseal.html

I've never come across an OSHA rule on carseals under PSM. They may have under some specialized hazards like climbing structures, bottles, or such.