where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
1248 views
Technical Discussions
Pablo Katchadjian
Engineering, -
Comision Nacional de Energia Atomica, Argentina, Joined Oct 1999, 1

Pablo Katchadjian

Engineering, -
Comision Nacional de Energia Atomica,
Argentina,
Joined Oct 1999
1
08:05 Aug-13-1999
UT in explosive zone

Please,I want to know if there are some security
restrictions(risk)in use an UT equipment,powered
with batteries,on a top of a petroleum tank
(Explosive Zone).
Many thanks.
Pablo.




 
 Reply 
 
Norm Woodward
Norm Woodward
08:29 Aug-13-1999
Re: UT in explosive zone
: Please,I want to know if there are some security
: restrictions(risk)in use an UT equipment,powered
: with batteries,on a top of a petroleum tank
: (Explosive Zone).
: Many thanks.
: Pablo.

Number one rule is: Never change transducers, or cables, while the machine is running. This applies even if the system is certified for use in explosive environments by the UL or anyone else.

I would also think that there would be some requirement for a ground strap to be between the UT unit and your tank, but I am not sure.

I don't know of any certified "explosion-proof" UT units, but I am sure we will hear from those who do.

Good Luck,

Norm



 
 Reply 
 
Robert (Rocky) A. Day
Engineering
Milky Way Jewels, USA, Joined Nov 1998, 40

Robert (Rocky) A. Day

Engineering
Milky Way Jewels,
USA,
Joined Nov 1998
40
00:02 Aug-14-1999
Re: UT in explosive zone
Comments on not hot swaping the transducers are appropriate. You should not swap any line in an explosives area and other actions may be needed. Sparks caused by static electricity, clothing and shoes etc are a danger, are an example. Sparks can also be generated by metal-to-metal impact and metal-to-stone impact. Flamable vapors can be a significant hazard and should be treated with respect.

A good place to start is the National Fire Protection Association which has many Codes and Standards associated with explosion safety. I do not recall the NFPA Code, but some reading may help locate resources of value.

The second resource is the National Electrical Manufacturers Association which provides standards for exposion proofing electrical equipment. This standard will provide information of use both in buying equipment and in retrofitting existing equipment.

Regards,
Robert (Rocky) A. Day
Second Sound
Ultrasonic Systems
904 Cortland Avenue
San Francisco, CA 94110
(415) 641-4947
Fax: (415) 641-5502

: Please,I want to know if there are some security
: restrictions(risk)in use an UT equipment,powered
: with batteries,on a top of a petroleum tank
: (Explosive Zone).
: Many thanks.
: Pablo.

:




 
 Reply 
 
Dave Cartwright
Director, Technical/R+D
Cygnus Instruments Ltd., United Kingdom, Joined Oct 1999, 3

Dave Cartwright

Director, Technical/R+D
Cygnus Instruments Ltd.,
United Kingdom,
Joined Oct 1999
3
00:17 Aug-16-1999
Re: UT in explosive zone
: Please,I want to know if there are some security
: restrictions(risk)in use an UT equipment,powered
: with batteries,on a top of a petroleum tank
: (Explosive Zone).
: Many thanks.
: Pablo.

: Pablo, The earlier advice should be viewed with caution, there is much speculation about electrical equipment for use in hazardous atmospheres. You should review official standards and/or documentation. There are EN standards that cover this subject. See EN-60079 for details of equipment and hazardous area classification and EN 50020 and EN-50014 for equipment testing and certification. Note that ONLY certified equipment should be used.

Please contact me direct if you need further advise.

Dave Cartwright




 
 Reply 
 

Product Spotlight

A1525 SOLO

A1525 Solo – the most compact and affordable TMF unit with two phased array transducers and 3D v
...
isualization and analysis software in standard delivery set. A compact, ergonomic and easy to handheld Phased Array unit based on Total Focusing Method for easy-going imaging of inspection objects with two-dimensional and three-dimensional visualization and evaluation of inspection results.
>

Sci Aps Z-Series Portable Handheld Analysers

The world’s only handheld analyzer that measures carbon content in stainless (yes even L-grades),s
...
teels, and cast irons. Also accepted for low Si analysis for sulfidic corrosion analysis, and is widely used in the power industry for Cr analysis, for flow accelerated corrosion applications.
>

IRIS 9000Plus - Introducing the next generation of heat exchanger inspection.

Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c
...
ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology.
>

FAAST-PA! OEM Patented phased Array for high speed UT inspection

Multiangle, Multifocus, Multifrequency, Multibeam. Instead of stacking UT electronics and having m
...
any PA probes, FAAST-PA is able to transmit all delay laws within ONE single shot in Real time.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window