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 -

LECOEUR ELECTRONIQUE
The Specialist of electronics for ultrasonic testing.

709 views
Technical Discussions
haidar shahri
NDT Inspector
abadan refinery, Iran, Joined Apr 2002, 3

haidar shahri

NDT Inspector
abadan refinery,
Iran,
Joined Apr 2002
3
03:34 May-12-2002
what is...

please tell me 1 what is a code? 2 what is a standard? 3 what is a specification? 4 what is defference between a code a standard and a specification? best regards


    
 
 
Mark Badrick
Inspection
Bahrain Petroleum Co, Bahrain, Joined Oct 1999, 11

Mark Badrick

Inspection
Bahrain Petroleum Co,
Bahrain,
Joined Oct 1999
11
04:05 May-12-2002
Re: what is...
I am confused and please forgive me if you think I am being rude, but your profile states that you are an NDT Inspector at Abdan Refinery with your main methods being MT, PT, RT, UT etc.. In your position it seems a strange question to ask.

: please tell me 1 what is a code? 2 what is a standard? 3 what is a specification? 4 what is defference between a code a standard and a specification? best regards
.



    
 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1252

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1252
05:39 May-12-2002
Re: what is...
Perhaps this question is not as simple as it may sound. English is full of subtlties in language (e.g. "should" and "shall" are often not noted as different when translated outside of English). As well, specific technical implications do not always have the same meaning in English and American (not to mention spelling!).

I provide below a heirarchy of the document types that are asked about. To the list I have added "procedure" and "technique" which are also sometimes used with different or inter-changeable meaning. Others may have slightly different notions of the meanings of these words.

The terms "code", "standard", "specification" and "procedure" are often confused in NDT. In some cases these terms are used inter-changeably. However from a technical point of view each refers to a separate type of document. To avoid even further confusion we will restrict our definitions to the written documents implied by these terms. This caution is due to the common referral to calibration blocks or test pieces with known defects used to verify accuracy of a test procedure as a "standard".

A standard is a written document assembled by recognized experts, with the purpose of recommending actions to achieve certain objectives. An example of a standard is the American Society of Nondestructive Testing Recommended Practice No. SNT-TC-1A. This is a standard for qualification and certification of NDT personnel by employers.

A standard is usually enforced or given authority by an organization or agency (typically professional societies or national institutions). When a set of standards is incorporated into law and thereby enforceable legally it is considered a code. Examples of codes are:
-American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code
-Canadian Standards Association (CSA) Z662 Oil & Gas Pipeline Systems.

When a user or purchaser of a specific product requires assurance of quality level they will often arrange their own document describing specific test parameters and acceptance criteria. Such a product specific standard is considered a specification. Although it may reference other codes and standards it can require more stringent limits than the more general standards.

To avoid the ambiguity of the usually general standards, and to avoid the constant updating of specifications that refer to national standards which are constantly revised, companies often develop a procedure.

The procedure can address the company's needs by setting out its standard practices for the various aspects of the test method, such as; procurement, processing, periodic controls, approved materials and accessories.

Finally, as a contracted inspection company applies a test to various parts, the variations available to achieve the desired results can be too myriad to list as part of the procedure document and generalisations are again too vague. A common method of addressing the specific inspection application to a specific part is to use a technique sheet.
**********************************************

: please tell me 1 what is a code? 2 what is a standard? 3 what is a specification? 4 what is defference between a code a standard and a specification? best regards
.



    
 
 

Product Spotlight

CIVA 2017 UT Module

CIVA NDE Simulation Software is the world leader of NDT Simulation. The UT simulation Module incl
...
udes: - "Beam computation": Beam propagation simulation - "Inspection Simulation": Beam interaction with flaws or specimens The user can simulate a whole inspection process (pulse echo, tandem or TOFD) with a wide range of probes (conventional, Phased- arrays or EMAT), components, and flaws.
>

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.
>

MUSE Mobile Ultrasonic Equipment

The MUSE, a portable ultrasonic imaging system, was developed for in-field inspections of light-weig
...
ht structures. The MUSE consists of a motor-driven manipulator, a water circulation system for the acoustic coupling and a portable ultrasonic flaw detector (USPC 3010). The MUSE provides images of internal defects (A-, B-,C- and D-scan).
>

High Resolution Industrial CT System for Small/Medium Size Parts Inspection - YXLON FF35 CT

The YXLON FF35 CT computed tomography system is designed to achieve extremely precise inspection r
...
esults for a wide range of applications. Available in a single or dual tube configuration, it is perfect for very small to medium size parts inspection in the automotive, electronics, aviation, and material science industries.
>

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