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[MW:4342] RE: Impact value requirements for sub Size Specimen (Size 10x7.5mm) at -20 Deg.F against requirement 14 Deg.F (Size 10x10mm)

By Materials & Welding

Sorry below highlighted is APL 5L clause 9.10.4 (not API 1104)

 

Regards,

C.Vasanthan
MIPS - Quality Control
DeltaAfrik Engineering Limited
City Express Bank Building
Plot 1637 Adetokunbo Ademola Street
Victoria Island, Lagos Nigeria
Phone: +234-1-461-8508, +2341-461-6137 ext. 1254
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e-mail: vasanthan.chandra@worleyparsons.com
WorleyParsons | www.worleyparsons.com

From: Chandra, Vasanthan (Lagos)
Sent: 18 February 2010 13:04
To: 'materials-welding@googlegroups.com'
Subject: Impact value requirements for sub Size Specimen (Size 10x7.5mm) at -20 Deg.F against requirement 14 Deg.F (Size 10x10mm)

 

Hi,

 

I have consolidated the subject query as below,

 

1. Impact requirement at 14 Deg.F with values of 27 J Average and 20 J Minimum Individual.

 

2. PQR Tested at -20 Deg.F with Sub size 10x7.5mm with values of 11, 8 and 7 J individual and average of 9 J.

 

3. Material: API 5L X52

 

4. Thickness: 0.365’’ (9.2mm)

 

5. Design Code: ASME Sec VIII Div.1 and ASME B31.8

 

 

Whether -20 Deg.F can support 14 Deg.F requirements. According to me it is possible, but the values at -20Deg.F is less than the requirement as per 9.10.4 of API 1104 conversion which are 27 J Minimum Individual and 36 J Average.

 

Pl share your interpretation and let me have your view.

 

Regards,
Vasanth

 


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