ASME Sect IX-QW-405-Position Qualification Ranges

[Anban]

Dear Experts

Position only a Supplementary essential variable (ie when CVN-Impact test required).

QW-405.2 A change from any position to the vertical position uphill progression. Vertical‐uphill progression

(e.g., 3G, 5G, or 6G position) qualifies for all positions. In uphill progression, a change from stringer bead to weave

bead. This variable does not apply when aWPS is qualified with a PWHT above the upper transformation temperature

or when an austenitic material is solution annealed after welding.

QW-405.4 (a) Qualification in the horizontal, vertical, or overhead position shall also qualify for the flat position. Qualification

in the horizontal fixed position, 5G, shall qualify for the flat, vertical, and overhead positions. Qualification in

the horizontal, vertical, and overhead positions shall qualify for all positions. Qualification in the inclined fixed position,

6G, shall qualify for all positions.

I'm looking at some of the WPS/PQRs received from Vendor. 

PQR state that Position Tested/Qualified- 1G

WPS state qualified for all groove and fillet positions?

CVN Tested at -30 deg C.

Based on QW-405.2 & QW-405.4- 1G does not qualify all positions.Only qualified for 1G & 1F.

Plls explain how "This variable does not apply when aWPS is qualified with a PWHT above the upper transformation temperature

or when an austenitic material is solution annealed after welding." relevant to Positions.

Pls shine some light on this. Thank You.

[John Henning]

Your reasoning is flawed and your answer incorrect.

 

Another example of reading the QW-4xx variables out of context.

 

QW-405.2 typically applies to general process qualification (groove welds, etc.). 

QW-405.4 apples to special process qualifications (Hard facing or corrosion resistant overlay).

 

These two variables are never called out together.

 

Regarding the application of supplementary essential variable QW-405.2, I suggest you read Interpretation IX-81-24 reply to question 1 states :

 

Reply (1): When applying QW-405.2, any position not involving the vertical uphill progression will qualify for all positions, except those involving the vertical uphill progression. Any position involving the vertical uphill progression win qualify for all positions, including those involving the vertical uphill progression. For example, qualification on a test coupon in the 2G position will qualify 4G and 5G downhill, but not 3G uphill. Qualification on a test coupon in 3G uphill progression will qualify 4G, 6G uphill progression, and all other positions.

 

 

John A. Henning

Welding & Materials

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[Harikrishnan N S]

Hi All

Referring to ASME Sec. IX 2013, understand that QW-405.4 applies to hardfacing and corrosion resistant overlay.

 

1) Can anyone clarify the difference between QW-405.4 para (a) and para (c)?

2) Will overlay qualification with 2G up-hill progression qualifies Flat position?

 

Thanks and Regards

Harikrishnan

[B Osare]

Dear Experts,

 

Can any one suggest the suitable welding filler wire and electrode for welding CS A105 to A335 P11.

 

Regards

 

B Osare

N F L Vijaipur

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[Bala Murugan]

You may use E 8018 B2

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[Bala Murugan]

ER80S- B2 + E8018 B2

[Kunal Patel]

Dear friend,

Please refer ASME SEC-IX QW-203: Limit of Qualified Position for Procedure. Position is not essential variable for welding procedure except SAW welding process.

Kunal Patel

BVIPL

[Harikrishnan N S]

Hi Kunal

 

Addition of position is an essential variable for Hardfacing/ Corrosion resistant overlays. Please refer Table QW-256.1 for GTAW.

 

Thanks and Regards

Harikrishnan

[Sankaran Sp]

Dear Friends,

You can use Er 70S-2 for root welding by TIG process and E7018 for fill passes by ARC process.

Pre heat and PWHT to be maintained for P11 conditions( ie: P no 4 conditions as per ASME sec VIII Div 1)

Regards,

Sankaran.Sp

Welding & Metallurgy expert  

  

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[raiyan bahrin]

 

Hi, i want to ask what is the difference between uphill and downhill in ASME IX and API 1104? The second question is why the ASME IX qualified uphill and downhill as uphill not qualified API 1104 downhill.

   Thank you and hope get answer...hehehehee

[George Dilintas]

Where did you read in ASME that Uphill qualifies Downhill?

2016-11-25 10:17 GMT+02:00 raiyan bahrin <raiyanba...@gmail.com>:

 

Hi, i want to ask what is the difference between uphill and downhill in ASME IX and API 1104? The second question is why the ASME IX qualified uphill and downhill as uphill not qualified API 1104 downhill.

   Thank you and hope get answer...hehehehee

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

[Kannayeram Gnanapandithan]

When impact is there, 3G Uphill qualify all positions

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[George Dilintas]

in ASME Code context

For Procedure qualification Vertical up or down is an nonessential variable. Impact is not an issue since it is not a supplementary essential variable.

For Performance qualification it is an essential variable. 

If you read QW-405.3 in ASME IX, you will find out that:

1.impact is not an issue at all

2. A change on progression requires requalification of performance except for the cover pass and the root pass if the later is removed

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[Mohit Aggarwal]

Dear Sir,

It states of PQR is qualified with 1G position then it will qualify for all positions, if there is no impact requirements in job and wps can be used for all positions for non impact requirement.

And if PQR is qualified for 1G position and if we will have to support it with impact requirement job , then WPS will be used for 1G position only.

With impact PQR should be qualified in either 3G in case of plate and In 5G or 6G in case of pipe to qualify all positions with impact requirement.

Regards,
Mohit Aggarwal.
Sr. Engineer-Welding.

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[George Dilintas]

Are we talking about position or progression? Please clarify....

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