Re: [MW:12698] RT Required for Pipe to WNFF

Hi,

Please find below the extraction from ASME Sec.VIII,Div.1 - UW11.

UW-11 RADIOGRAPHIC AND ULTRASONIC

EXAMINATION

(a) Full Radiography. The following welded joints shall

be examined radiographically for their full length in the

manner prescribed in UW-51:

(1) all butt welds in the shell and heads of vessels

used to contain lethal substances [see UW-2(a)];

(2) all butt welds in vessels in which the nominal

thickness [see (g) below] at the welded joint exceeds 11⁄2

in. (38 mm), or exceeds the lesser thicknesses prescribed

in UCS-57, UNF-57, UHA-33, UCL-35, or UCL-36 for

the materials covered therein, or as otherwise prescribed

in UHT-57, ULW-51, ULW-52(d), ULW-54, or ULT-57;

however, except as required by UHT-57(a), Categories B

and C butt welds in nozzles and communicating chambers

that neither exceed NPS 10 (DN 250) nor 11⁄8 in. (29 mm)

wall thickness do not require any radiographic examination;

 

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

From: karthick enigoo <karthickenigoo@gmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, October 15, 2011 5:44 PM
Subject: [MW:12681] RT Required for Pipe to WNFF

Dear Friends,

 I need a clarification regarding, Pipe to Flange (Weld Neck). As per my drawing Design As per ASME Sec viii, Joint efficiency - 1, Radiography - Full & PWHT considered. Size of nozzles 80NB, 350NB & 500NB Sch 60. Radiography need to be done for all nozzles. 

--
Thanks & Regards,                                                    
D. Karthick
Ph.No: +91-9787300898

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