Saturday, September 4, 2010

Re: [MW:6858] acceptance criteria of DPT

HI,
Temperature limit as per ASME Section SecV,shall be as follows.

T-652 Techniques for Standard Temperatures

As a standard technique, the temperature of the penetrant

and the surface of the part to be processed shall not be

below 40°F (5°C) nor above 125°F (52°C) throughout the

examination period. Local heating or cooling is permitted

provided the part temperature remains in the range of 40°F

to 125°F (5°C to 52°C) during the examination. Where it is

not practical to comply with these temperature limitations,

other temperatures and times may be used, provided the

procedures are qualified as specified in T-653.
Acceptance criteria:
It shall be as per ASME Section-VIII,Div1-Appendix-8.In no case temperture shall be less than 5 degree celsius for LPT.If the surface temp.is less than that it shall be heated to maintain the temp.limit as per code.
Thanks & Regards,
 
(karthik)
Karthikeyan.S
QA/QC Manager
Getabec Energy Co.,Ltd.
379,Moo6,Soi8,Nikhomphatana,
Rayong-21180,
Thailand.
Phone: 0066 38 897035-8 (Off)
Fax: 0066 38 897034
Hand Phone: 0066 892512282


--- On Thu, 9/2/10, puneet takiar <puneet1takiar@yahoo.com> wrote:

From: puneet takiar <puneet1takiar@yahoo.com>
Subject: Re: [MW:6847] acceptance criteria of DPT
To: materials-welding@googlegroups.com
Date: Thursday, September 2, 2010, 10:41 PM

Dear Sir,
 
What will be the acceptance criteria for LPT of jobs at lower temprature than 10 degree celcius.
Regards
 
puneet takiar



From: PREM SHANKARDUTT NAUTIYAL <prem_nautiyal@rediffmail.com>
To: materials-welding@googlegroups.com
Sent: Fri, 27 August, 2010 10:28:25 PM
Subject: Re: [MW:6749] acceptance criteria of DPT


Hi

If your construction code is ASME Sec VIII Div.1, then refer Mandatory Appendix 8 for LPT acceptance criteria.

The acceptance standards mentioned in ASME Sec VIII Div 1, 2007 edition are:

All surfaces examined shall be free from :
Relevant linear indications ( greater than 1.6mm)
Relevant Rounded indications greater than 5mm.
Four or more relevant rounded indications in a line separated by 1.5mm or less (edge to edge).

Regards

Prem Nautiyal

On Fri, 27 Aug 2010 09:07:43 +0530 wrote
>HI FRIENDS,
CAN ANY BODY TELL ME ABOUT THE ACCEPTANCE CRITERIA OF DPT ?ACCEPTANCE RANGES OF DEFECTS LIKE UNDERCUT,PORE,POROSITY,CRACK,etc.thanks
 
Regards
M.Aslam Khan
QA/QC ENGINEER



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PREM S NAUTIYAL
CELL : 9820313278
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