RE: [MW:9930] HIC test as per NACE MR. 0103 of SA 516 Gr.60 plates

Dear Kamal,

 

 

I reviewed my copy of UOP-4-11-4, clause 4.7 specifies that materials for wet H2S service should be killed steel.Use of HIC material for this service must be the additional requirement from the engineering consultant (who's the consultant in this case??).

 

SA 516 Gr 60 is a common grade of carbon steel. Not all heats and chemical compositions are designed to meet the HIC/sour service criteria.

 

SA 516-60/70 normally is not manufactured   in the mill to meet  HIC test criteria as a  regular product.It has to be specially processed to meet  HIC testing criteria. In order to meet testing criteria of  NACE TM-0284, the steel have to be specially manufactured to meet HIC acceptance criteria.

 

NACE have another standard ,TM-0103-2004-Laboratory Test Procedures for Evaluation of SOHIC Resistance of Plate Steels Used in Wet H2S Service. I would think testing to this standard would be extremely special case, and mills may not comply unless plates are purchased in bulk or specially ordered. Hence adhering to TM-0284 would be wise.

 

By default all ASTM/ASME steels have to meet the criteria of A/SA-20. If you go though  SA-20, there are fine guidelines to  control the chemical composition and heat treatments to get the desired HIC resistances, i.e the steel produced would be a lot cleaner. Fabricators may specify this at their discretion. I feel the following clauses of SA-20 directs to plates for sour service/ or with resistance to HIC.

• Clause.5.1,
• 5.3.2,
• 5.3.4,
• 5.3.5,
• 5.3.7 & 5.3.8
• 6.5,6.6
• 7.1.2, 7.1.3
• Table-1
• Table-2, see the UTS vs. Max Carbon Equivalence.For SA-516/60 Max C.E is 0.45( up to 2 in thk)
• In addition the supplementary requirements S-17,S-20,S-21,S-25,S-27 should apply.
• If impact test is required,Table A-1.15 should apply.

 

Hope this would clarify your doubts. While you purchase the plate from the mill you may use this attached data sheet for guidance. However your project technical specification would be mandatory and most appropriate.

 

Thanks.

 

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario,Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

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From: kamal nathan [mailto:kamalihi@gmail.com]
Sent: Wednesday, February 16, 2011 11:08 PM
To: pgoswami
Subject: Re: [MW:9852] HIC test as per NACE MR 0103 of SA 516 Gr.60 plates

Dear sir,

            Shell side of the heat exchanger is designed as per UOP spec.4-11 section 4.7 and as per design data is shell side special service HYDROGEN &WET H2S and the material is SA 516 Gr.60 only.

Do u mean that for the above condition we have to do HIC test?

Special notes in drawing specifies that H2S RESISTANT MATERIAL to be provided,so my query is why we need to do HIC test?SA 516 Gr.60 does not fall   under the clause MR 0103 2.1 based on that clause are we not complying the requirements?

Is SA 516 GR.60 is not a H2S RESISTANT MANTERIAL?

 

expecting your view on this,

kamal

On Thu, Feb 17, 2011 at 9:10 AM, pgoswami <pgoswami@quickclic.net> wrote: 

 

Dear Kamal,

 

See this product specification on HIC testing.I would send you some more details on HIC testing of plates. MR-0103 addresses only SSCin wet H2S service, the other forms of HIC cracking are not addressed in MR-0103(see below). Meantime can you gather information on the wet H2S service category e.g category-1,2 or 3.

 

I would think from all good purposes getting the plates as HIC tested would be better (though it may cost a little more).

 

I would send you more info after hearing from you.

 

Thanks.

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario,Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

MR-0103-This NACE standard establishes material requirements for resistance to sulfide stress cracking (SSC) in sour refinery process environments, i.e., environments that contain wet hydrogen sulfide (H2S). It is intended to be used by refineries, equipment manufacturers, engineering contractors, and construction contractors.

The term “wet H2S cracking” as used in the refining industry covers a range of damage mechanisms that can occur because of the effects of hydrogen charging in wet H2S refinery or gasplant process environments. One of the types of material damage that can occur as a result of hydrogen charging is SSC of hard weldments and microstructures, which is addressed by this standard. Other types of material damage include hydrogen blistering, hydrogen-induced cracking(HIC), and stress-oriented hydrogen-induced cracking (SOHIC), which are not addressed by this standard

---

From: kamal nathan [mailto:kamalihi@gmail.com]
Sent: Wednesday, February 16, 2011 10:01 PM
To: pgoswami

Subject: Re: [MW:9852] HIC test as per NACE MR 0103 of SA 516 Gr.60 plates

Dear sir,

           Our design specification is given as below

Shell side Special service -Hydrogen & WET H2S

Shell side Material-SA 516 GR 60

NACE MR 0103 is applicable on the shell side of this exchanger.H2S RESISTANT MATERIAL to be provided for shell side of exchanger.

 

So as per this whether we have to do the HIC test for the materials during procuring.if so what type of test to be carried out for base materials and after welding what type of test to be done.

 

I have gone through NACE MR0103 it doesnot refer NACE TM 0284 for testing.

 

On Wed, Feb 16, 2011 at 10:18 AM, pgoswami <pgoswami@quickclic.net> wrote:

Dear Kamal,

 

Were you able to get the correct design requirements, i.e if wet H2S service condition  would exist for the heat exchanger and accordingly in addition to MR-0103, NACE 8X194 ( details as below) would be applicable.

   

OR

 

Only MR-0103 requirements are to be fulfilled  required as per the design specifications.

 

 

Thank

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario,Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of kamal nathan
Sent: Sunday, February 13, 2011 10:22 PM

To: materials-welding@googlegroups.com

Subject: Re: [MW:9852] HIC test as per NACE MR 0103 of SA 516 Gr.60 plates

Dear P.Goswami Sir,

                                  Thanks for your brief note,That means what are all the test to be done inorder to comply NACE mr 0103 PLEASE CLARIFY except chemistry control(what are the elements to be controlled),hardess control(what is the max.hardness),heat treatment(what temperature)

kamal

On Sun, Feb 13, 2011 at 8:48 AM, pgoswami <pgoswami@quickclic.net> wrote:

Mr. Kamal,

 

I would think that you need to read the Foreword to MR-0103 carefully.I have extracted some text from this document. The summary is as follows:-

1. MR-0103 addresses a wide range of materials, fabrication issues related to SSC in wet H2S environments.
2. Wet H2S environment is dangerous to cause any of the hydrogen related cracking as listed below.
3. It is designer's responsibility to specify if such environment apply for the heat exchanger under fabrication (Usually process media or services are often specified on the drawing). This has to come from the EPC Contractor/or the client.
4. If the intended service is wet H2S then in addition to MR-0103, one has to look into the following specification:-

• NACE International Publication 8X194 (2006 Edition)--Materials and Fabrication Practices for New Pressure Vessels Used in Wet H2S Refinery Service.

• NACE International Publication 8X294 (2003 Edition), Review of Published Literature on Wet H2S Cracking of Steels.

• NACE SP0296-2010-Detection, Repair, and Mitigation of Cracking in Refinery Equipment in Wet H2S Environments

The end answer is if wet H2s service environment is confirmed then "HIC"  test and additional requirements as per 8X194 would be applicable.Otherwise the plates may be ordered straightforward as per MR-0103 requirements.

 

Thanks.

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario, Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

MR-0103- establishes material requirements for resistance to sulfide stress cracking (SSC) in sour refinery process environments, i.e., environments that contain wet hydrogen sulfide (H2S). It is intended to be used by refineries, equipment manufacturers, engineering contractors, and construction contractors.

The term “wet H2S cracking” in refining industry covers a range of damage mechanisms that can occur because of the effects of hydrogen charging in wet H2S refinery or gas plant process environments. One of the types of material damage that can occur as a result of hydrogen charging is SSC of hard weldments and microstructures, which is addressed by this standard. Other types of material damage include hydrogen blistering, hydrogen-induced cracking (HIC), and stress-oriented hydrogen-induced cracking (SOHIC), which are not addressed by this standard.

MR-0103 is based on the good experience gained with NACE MR0175/ISO 15156, but tailored to refinery environments and applications. Other references for this standard are NACE SP0296, NACE Publication 8X194, NACE Publication 8X294, and the refining experience of the task group member

MR-0103-establishes material requirements for resistance to SSC in sour petroleum refining and related processing environments containing H2S either as a gas or dissolved in an aqueous (liquid water) phase with or without the presence of hydrocarbon. This standard does not include and is not intended to include design specifications. Other forms of wet H2S cracking, environmental cracking, corrosion, and other modes offailure, although outside the scope of this standard, should be considered in the design and operation of equipment. Severely corrosive and/or hydrogen charging conditions may lead to failures by mechanisms other than SSC and should be mitigated by methods that are outside the scope of this standard.

.As per MR-0103 It is the user’s responsibility to ensure that a material will be satisfactory in the intended environment.The user may select specific materials for use on the basis of operating conditions that include pressure,temperature, corrosiveness, and fluid properties. A variety of candidate materials may be selected from this standard for any given component

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of MM Muthu
Sent: Saturday, February 12, 2011 8:25 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:9840] HIC test as per NACE MR 0103 of SA 516 Gr.60 plates

Dear Kamal,

Its not an essential requirement to perform HIC as per NACE MR 103. check for any client requirements or design requirements

If you want to perform HIC it should be as per NACE-TM0284, it only state the test method to perform HIC and measure CLR, CTR, CSR, it does not tells about acceptance criteria.

Check the below link which throws light on MR0175 & MR0103, it clearly says "It is extremely important to note that in both MR0175 and 

MR0103 the user is responsible for determining and judging whether the environmental conditions are such that the material requirements of the Standard should be applied. "

http://www.documentation.emersonprocess.com/groups/public/documents/articles_articlesreprints/nace_overview_corrosion2004.pdf

Cheers

MM

On Fri, Feb 11, 2011 at 9:51 AM, kamal nathan <kamalihi@gmail.com> wrote:

hi all,

        pls guide in the below query

 

we have to do a heat exchanger of material SA 516 Gr,60 conforming to NACE MR 0103.

 

we have ordered  for plates supply to a trader and do check test to conform the requirements of NACE MR 0103

 

what are all the test to be done as per NACE MR 0103?

 

Whether we have go for HIC test or not?

 

If we have to do HIC test for plate materails as per NACE where the clause is mentioned?

 

I have gone through NACE MR 0103 and could not interpret exactly whether HIC test is mandatory

 

please put all your comments related to this

 

kamal

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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.