ML051660541
| ML051660541 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 03/18/2005 |
| From: | Chrzanowski D Exelon Corp |
| To: | Dick G, Thomas Scarbrough Office of Nuclear Reactor Regulation |
| References | |
| Download: ML051660541 (60) | |
Text
George Dick -Byron #3 Page 1 From:
<david.chrzanowskiO exeloncorp.com>
To:
<gfd~nrc.gov>, <tgs~nrc.gov>
Date:
3/18/05 12:32PM
Subject:
Byron #3 Action Required:
Recommendation:
<<Document #1 Part 2b.pdf>> <<Document #1 Part 2c.pdf>> <<Document #1 Part 3a.pdf>>
David Chrzanowski Licensing Engineer Exelon Nuclear - Cantera phone (630) 657-2816 pager (630) 683-0535 cell phone (630) 826-0604 fax - (630) 657-4327 This e-mail and any of its attachments may contain Exelon Corporation proprietary information, which is privileged, confidential, or subject to copyright belonging to the Exelon Corporation family of Companies.
This e-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this e-mail is strictly prohibited and may be unlawful. If you have received this e-mail in error, please notify the sender immediately and permanently delete the original and any copy of this e-mail and any printout. Thank You.
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Byron #3 3/18/05 12:31PM
<david.chrzanowski @exeloncorp.com>
david.chrzanowski @exeloncorp.com Recipients nrc.gov owf2.po.OWFNDO TGS (Thomas Scarbrough) nrc.gov owf4_po.0WFNDO GFD (George Dick)
Post Office owf2_po.OWFNDO owf4_po.0WFNDO Route nrc.gov nrc.gov Files MESSAGE Document #1 Part 2b.pdf Document #1 Part 2c.pdf Document #1 Part 3a.pdf Mime.822 Options Expiration Date:
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C 0
'7 WCP-8 Rev. 5 r
g Page 9 of 35 6.17.2 Additional thermocouples may be added to accommodate better control or as spares.
G.17.3 Where two thermocouples are used, one shall be placed at the expected hottest spot and one at the expected coldest spot.
6.17.4 When PWHT of socket welds is
- required, one thermocouple may be used, and shall be placed in the center of the weld.
6.18 Thermocouple placement shall be equally spaced around the pipe circumference on either side of the weld.
Thermocouple placement for applications other than pipe shall be determined by the Welding Manager.
6.19 Shielded thermocouple insulators or ceramic putty shall be used for each thermocouple if necessary, to protect it from radiant heat.
6.20 Prior to the PWUT operation, the Welding Manager shall map the thermocouple placement on the recorder - time/tewperature chart.
6.21 The area to be postweld heat treated shall be free of oil, grease, dirt and paint.
6 22 External support of piping or components say be required to prevent bending due to weight or cold spring.
Care shall be taken to preserve alignment of components.
6.23 When performing PWHT of welds to valves, care shall be taken to avoid excess heating of the valve internals.
The valve manufacturer's recommendations may require valve disassembly or unseating and shall be reviewed by the welding Manager.
6.24 Care shall be exercised when applying PWHT to welds adjacent to quenched and tempered material. In such cases, the PHT temperature shall not exceed 1150 F in order to retain the impact properties of the quenched and tempered material.
In no case shall the maximum PWel temperature exceed the final tempering temperature of the quenched and tempered material.
a WCph8 Rev. 5 Page 10 of 35 3
6.25 When materials of two different P-Humbers are joined by welding, the applicable PWHT holding temperature shall be specified for the material requiring the higher PWHT temperature range.
6.26 When non-pressure retaining materials are welded to pressure retaining materials, the PWHT temperature range of the pressure retaining materials shall govern.
6.27 Stress Relieving Methods that may be used, but not limited to, are as follows:
6.27.1 Electrical Resistance Heating per Attachment 11 6.27.2 Induction Heating 6.27.3 Gas Heating 6.27.4 Localized Heating 6.28 Postweld Heat Treatment Review 6.28.1 Prior to a field postweld heat treatment, a review shall be performed of all previous heat treatments, including those performed by the manufacturer, for individual welds, and base materials verifying that neither time nor temperature.has or will (by the performance of another heat treatment) exceed the maximum qualified in accordance with requirements of the applicable Code(a).
- The review shall also determine if normalized and
- tempered, or quench and tempered materials will be postweld heat treated and review tempering temperatures A
so that the postweld heat treatment operation shall not exceed that allowance.
A 6.29 Functiongl Check Requireentg 6.29.1 A functional check will be made prior to reaching 600'F to verify that all points recorded are not more than plus or minus 40GF.
Above 6000 F all points should be above the minimum holding temperature.
The Welding Manager is to be notified if irregular chart readings are encountered which cannot be
Wd4-8 Rev. 5 V
gPage 11 of 35
.7 corrected by checking or replacement of wires or thermocouple, adjustment to controller, or manual control take over.
The verification for compliance shall be made as a functional check using a calibrated pyrometer traceable to National Bureau of Standards.
6.29.2 Chart rotation/travel speed shall be verified with a conventional watch for 10 minutes during the holding period. A variance of plus or minus 1 minute is acceptable.
This check shall be noted on the strip chart.
6.30 Equipuent galibration-Reguirements 6.30.1 Calibrated multi-point recorders shall be utilized per the manufacturer's standard service instructions or by a specified written practice.
6.30.2 Recording equipment must bear identification and a sticker certifying date of calibration prior to use.
7.0 SPECIFIC CONSTRUCTION CODE 7.1 ASKE B31. 1 Code:
7.1.1 Preheat requirements are listed in Attachments 1 and 5.
7.1.2 For inert gas tungsten arc root pass welding, a lower preheat temperature in accordance with the temperature established in the qualified welding procedure may be used.
7.1.3 After welding commences, the minimum preheat temperature shall be maintained until any required PWHT is performed on P-Nos 3, 4,
5 and 6, except when all of the following conditions are satisfied.
7.1.3.1 A minimum of at least 3/8" thickness of weld is deposited or 25% of the welding groove is filled, whichever is less (the welduent shall be sufficiently supported to prevent over-stressing the weld if the weldment is to be moved or otherwise loaded).
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S WCP4i8 Rev. 5 Page 12 of 35 7.1.3.2 For i-No's 3, 4 and 5 (with a chromium content of 3.0% maximum) materials, the weld is allowed to cool slowly to room temperature.
7.1.3.3 For P-No. 5 (with a chromium content greater than 3.0%) and P-No. 6 materials, the weld is subjected to an adequate intermediate heat treatment with a controlled rate of cooling.
7.1.3.4 After cooling and before welding is resumed, visual examination of the weld shall be performed to assure that no cracks have formed.
7.1.3.5 Required preheat shall be applied before welding is resumed.
7.1.4 PWHT requirements are listed in Attachment 5.
7.1.4.1 All welds in materials included in Attachment 5
shall be PWHT except as provided in Paragraphs 7.1.5 and 7.1.6.
7.1.4.2 Welds in material not listed in Attachment 5 shall be PWRT in accordance with the qualified welding procedure.
7.1.5 When parts of two different P-Number groups are joined by welding, the PWHT shall be specified for the Material requiring the higher PWHT temperature.
When a nonpressure part is welded to a pressure part and PWHT is required for either part, the maximum PIER temperature shall not exceed the maximum temperature acceptable for the pressure retaining part.
7.1.5.1 The Welding Manager shall ensure that the lower critical temperature of either material is not exceeded.
7.1.6 PWIHT is not reguired for the followinM conditions:
a) Welds in non-ferrous materials.
b) Welds exempted in Attachment 5.
c)
Welds subject to temperatures above the lower critical temperature during fabrication provided the welding procedure
.... .
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.7 Rev. 5 Page 13 of 35 has been qualified with pWHT at the temperature range to be reached during fabrication.
7.1.7 PWHT Thickness Definitions a) "Nominal thickness" as used herein is the lesser thickness of (1) or (2) as follows:
- 1. The thickness of the weld.
- 2. The thicker of the materials being joined at the weld.
b) "Thickness of the weld," which is a factor in determining the nominal thickness, is defined as follows:
- 1. Full Penetration Groove Welds:
The thicker of the two abutting ends after weld preparation, including I.D.
machining.
- 2.
Fillet welds: The throat thickness of the weld.
- 3.
Partial penetration welds:
The depth of the weld groove.
- 4.
Material repair welds:
The depth of the cavity to be repaired.
- 5. Branch welds:
Shall be calculated by the Welding Manager, per Par 132.4.2 of B31.1.
7.1.8 PWHT Heating and Cooling Reguirements 7.1.8.1 Above 6000F, the rate of heating and cooling shall not exceed 6000F per hour divided by 1/2 the maximum thickness of material in inches at the weld, but in no case shall the rate exceed 600OF per hour.
(See Attachment 5 for cooling rate requirements for P-Nos.
7 and lOZ materials.)
7.1.9 Heating Requirements 7.1.9.1 Heating an assembly in a furnace should be used when practical.
An assembly may be postweld heat treated in more than one heat in
.7m-WC -8
- r' Rev. 5
- 0 Page 14 of 35 a furnace provided there is at least a 5 ft overlap of the heated sections and the portion of the assembly outside the furnace is shielded so that the temperature gradient is not harmful.
Direct impingement of flame on' the assembly is prohibited.
7.1.9.2 Welds may be locally
- PWHT, providing the following requirements are satisfied:
circumferentially heated band around the entire component with the weld located in the center of the band.
- 2.
For girth welds, the width of the band heated to the PWHT temperature shall be at least three times the wall thickness of the thickest part being joined at the weld.
- 3.
For nozzle and attachment welds, the width of the band heated to the PWHT temperature shall extend beyond the nozzle weld or attachment weld on each side, at least two times the header thickness and shall extend completely around the header.
7.2 MSME B31.3 Code 7.2.1 Preheat temperatures are as listed in.
7.2.2 The necessity for preheating and the temperature to be used shall be as specified in the engineering design and demonstrated by procedure qualification.
All types of welds require preheating, including tack
- welds, repair welds and seal welds of threaded joints.
7.2.3 If the ambient temperature is below 32F., the recommendations of Attachment 2 are mandatory.
7.2.4 Preheat requirements for unlisted materials shall be specified in the WPS.
7.2.5 The thickness specified in Attachment 2 is that of the thicker member at the weld joint.
- s.:
.7 WCPA8 Rev. 5 Page 15 of 35 7.2.6 7.2.7 7.2.8 7.2.9 As a minimum, the preheat temperature shall be maintained in a zone extending 1" beyond each edge of the weld.
When dissimilar P-No. materials are joined by
- welding, the higher temperature from shall be used.,
In the event of an interruption in the welding
- activity, the rate of cooling shall be controlled or other means shall be used to prevent detrimental effects in the piping.
The specified preheat shall be applied before resuming welding.
The preheat temperature shall be checked by the use of temperature indicating crayons, thermocouple pyrometers or other suitable means that ensures the temperature specified in the WPS is obtained prior to and maintained during welding.
Thermocouples way be temporarily attached to pressure containing
-components using the capacitor discharge welding method without utilizing a PQR or WPS.
After thermocouples are removed, the areas shall be visually examined for evidence of defects to be repaired.
PWT shall be in accordance with Attachment 6 with the following exceptions; 7.2.10 7.2.11 7.2.11.1 7.2.11.2 7.2.11.3 I
.1 I
,2 I
'.3 j
Where warranted by experience or knowledge of service conditions, alternative methods of PWHT or exceptions to the basic provisions may be specified.
Normalizing, or normalizing and tempering, or annealing may be applied in lieu of the required heat treatment after
- welding, bending, or
- forming, provided that the mechanical proportion of any affected weld and base metal meet specification requirements after such treatment and that the substitution is approved by the designer.
Conditions more stringent may be specified by the designer.
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7 WCP-V Rev. 5 Page 16 of 35 2_
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.C 7.2.11.4 7.2.12 7.2.13 7.2.13.1 7.2.13.2 7.2.14 7.2.14.1 7.2.14.2 Conditions less stringent may be specified by 4
the designer upon review of service conditions. The applicable WPS and PQR shall be qualified with the alternate PWMT.
.: j PWHT shall be specified in the WPS and shall be used in qualifying the welding procedure.
In When components are joined by welding, the thickness used in applying the requirements of shall be that of the thicker component measured at the joint, except as follows; Branch connections, reinforcement metal (pads or saddles) shall not be considered in determining PWHT requirements.
Where the thickness through the weld in any
.- 4 plane is twice the material thickness at the joint, PWT is required.
For fillet welds at slip-on and socket welding flanges and piping connections NPS 2 and
- smaller, for seal welding of threaded connections on NPS 2 or smaller and for attachment of external nonpressur* parts, PHTM is required when the thickness through the weld in any plans is more than twice the minimum material thickness requiring
- PWHT, except as follows; PWHT is not required on P-No. 1 material when weld throat thickness is 5/8" or less regardless of base metal thickness.
PWHT is not required for P-No.
3, 4,
5 or IOA materials when the weld throat is 1/2" or less, regardless of base metal thickness,
-'A provided that the minimum preheat was applied and the specified minimum tensile strength is less than 71 ksi.
PWHT is not.'required on ferritic materials I when welded with filler metal that does not air harden.
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7.2.14.3
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-0 WCP-8 Rev. 5 Page 17 of 35 7.2.15 PWHT temperature shall be checked by thermocouple pyrometers or other suitable methods.
Attachment and removal shall be in accordance with Par. 7.2.10.
7.2.16 Where a
hardness test is specified in, at least 10% of the welds shall be tested.
7.2.16.1, Where dissimilar metals are joined by welding, the specified hardness limits shall be met for the weld material and base materials.
7.2.17 PWHT of welded joints between dissimilar ferritic metals or between ferritic materials using dissimilar ferritic filler metal shall be at the higher of the specified temperatures.
7.2.18 PWHT of welded joints including both ferritic and austenitic components and filler metals shall be as required for the ferritic material, unless otherwise specified in the engineering design.
7.2.19 Where a weldment is allowed to cool prior to PWHT, the rate of cooling shall be controlled or other means shall be used to prevent l detrimental effects in the piping.
7.2.20 Where an entire piping system cannot be placed 2
fully in a furnace, it is permissible to utilize more than one heat provided that there is a
minimum one foot overlap between successive heats, and that parts of the.1 assembly outside the furnace are protected from harmful temperature gradients.
7.2.21 Where localized PWHT is
- used, a
circumferential band of the pipe run and branch, where applicable, shall be heated until the specified temperature range exists over the entire section extending a minimum of one inch beyond the too of the weld.
7.3 ASKE SECTION I 7.3.1 Preheat requirements are listed in Attachment 3.
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WCO-S Rev. 5 Page 18 of 35 7.3.1.1 requirements are non-sandatory.
7.3.1.2 The WPS and PQR used for welding shall specify the minimum preheat temperature or specify this document.
7.3.2 Preheat may be applied by any method which does not harm the base material or deposited weld metal, or which introduces any material harmful to the weld.
7.3.3 PWHT requirements are listed in Attachment 7.
7.3.4 Flexible type staybolts having a cover cap weld need not be PWHT'd.
7.3.5 Welded connections may be added to a vessel after PWHT without being PWHT'd provided:
7.3.5.1 The diameter of the attachment opening in the vessel wall does not exceed 2" or that allowed by ASNE Section I, whichever is less.
7.3.5.2 The inside and outside attachment welds do not exceed 3/8" throat dimension. This provision does not apply to connections that affect the shell thickness.
7.3.6 When pressure parts of two different P-Number groups are joined by welding, the PWHT shall be the higher of the specified PWHT per.
7.3.6.1 When nonpressure parts are welded to pressure parts, PWHT shall be as specified for the pressure parts.
7.3 7 Partial penetration and fillet welds attaching P-No. 5 tubes and pipe to headers of lower P-Number material may be PMMT at the temperature specified in Attachment 7 for the lower P-Number material provided the tubes or pipe comply with all the following conditions:
7.3.7.1 A maximum specified chromium content of 3.0%;
7.3.7.2 A maximum nominal outside diameter of 4";
7.3.7.3 A maximum thickness of 1/2";
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WCOL8 Rev. 5 Page 19 of 35 LL i
I 7.3.7.4 7.3.8 7.3.8.1 7.3.8.2 7.3.8.3 7.3.9 7.3.10 7.3.10.1 7.3.10.2 7.3.10.3 7.3.10.4 A maximum specified carbon content of not more than.15%.
Nominal thickness is defined as follows:
Thickness of weld, pressure retaining material or the thinner of the sections being joined, whichever is least.
For fillet welds, the throat thickness.
For partial penetration and material repair welds, the depth of the groove or preparation.
The holding time at temperature specified in need not be continuous.
The weldaents shall be PWHT by any of the following methods:
Heating the complete assembly as a unit.
Heating sections of the assembly.
When PWAT in sections, the PWHT of the final joints shall be performed by uniformly heating a circumferential band having a minimum width of 3 times the:plate thickness on each side of the weld, uniformly around the band.
Nozzles or other welded attachments for which pWT is required may be locally PWHT by heating a circumferential band around the entire vessel with the welded connection in the middle of the band.
The width of the band shall be wider than the nozzle or other attachment weld by at least three times the wall thickness of the vessel, and shall be located in such a manner that the entire band will be heated to the temperature and held for the time specified.
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4 i'aE Local PWHT of and headers circumferentia temperature at widest part of than twice the welded joints in pipes, tubes, shall be by heating a
.1 band to the specified time and
- least 3 times the width of the the groove, but in no case less t width of the reinforcement.
a 8.
3 7.3.11 7.3.11.1 7.3.11.2 For repair welds after PW need be performed subjec limitations:
The depth of repair belo%
not exceed 10% of the drum or 50% of the tube wall t is the smaller dimension.
The area to be repaired minimum temperatures indic Material Welding 12-Num=r GrouD P-No. 1 P-No. 3 P-No. 4 P-No. 5 7.3.11.3 7.3.11.4 7.4 7.4.1 7.4.2 7.4.3 7.4.4 7.4.5 The tube shall not be grea, except for P-No. 1 whicl 6-5/8 in. O.D.
The qualified welding proc the requirements of Sec omission of PRRT.
Rev.5 5
Page 20 of 35 ET, no further PWHT t to the following r the surface shall or header thickness hickness, whichever Ls preheated to the
- ated below.
Minimum Preheat, IF For Rework Weldina 200 200 250 300 ter than 4 in. 0.D.,
i shall not exceed edure used must meet
+/-tion IX with the ior to welding shall, 9 and dure.
Preheat shall the materials being ied WPS specifies a than what is listed 7.4.12, the higher govern.
aments of Attachment kitted.
PNHT are listed in
- .12.
the weld shall be as b>K 45 ASHE SECTION III Preheating of materials pr be performed-as listed in para. 7.4.12 of this proce be based on the thicker of joined at the weld joint.
In cases where the qualif preheat temperature other in Attachment 4,9 and para of the two preheats shall PWHT shall meet the require 8 except as otherwise penr Exemptions to mandatory.and para. 7.4 PWHT nominal thickness of follows:
7 7
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90 BW13 H`,
8 Mi WCP48 Rev. 5 Page 21 of 35 7.4.5.1 7.4.5.2 7.4.5.3 7.4.7 The thickness of the weld, the pressure retaining material for structural attachment
- welds, or the thinner of the pressure retaining materials being joined, whichever is least.
For fillet welds the nominal thickness is the throat thickness.
Nominal thickness for partial penetration and material repair welds shall be the depth of the weld groove or preparation.
PWHT requirements when joining different P-Number materials shall be that specified in for the higher temperature range.
General Requirements -
Except as otherwise permitted in Attachment 9,.
all
During PWHT, the metal temperature shall be maintained within the temperature range and for the minimum holding time specified in Attachment 8, except as otherwise permitted by alternate methods.
PWHT shall be performed in temperature surveyed and calibrated
- furnaces, or PWHT shall be performed with thermocouples in contact with the material or attached to blocks in contact with the material.
In
- addition, the requirements of the following subparagraphs shall apply..
Time-Temperature Recordings - Time-temperature recordings of all PWHT's shall be made available for review by the Inspector.
Identification on the time-temperature recording may be provided for permanent records.
-"Ie
- 1 lin 7.4.8 7.4.9 7.4.9.1 Holding Times at Temperature.
The holding time at temperature as specified in Attachment 8 shall be based on the nominal thickness of the weld.
The holding time need not be continuous. It may be an accumulation of the times of multiple PWHT cycles.
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I Ji VCP4 Rev. 5 Page 22 of 35
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7.4.9.2 7.4.9.3 7.4.10 Holding time temperatures in *xc5ss of the ninimum requirements may be used, provided that specimens so heat treated are tested.
Alternatively, when it is impractical to PVET at the temperature range specified in, it is permissible to perform the PWHT of certain materials at lower temperatures for longer periods of time in accordance
'with the alternate table in.
PWHT Requirements for Non-pressure-Retaining Parts -
When non-pressure-retaining material is welded to pressure retaining material, the PWHT temperature range of the pressure retaining material shall control.
Exemptions to Mandatory Requirements - PWHT in accordance with this Sub-article is not required for:
7 4.11 7 4.11.1 7.4.11 2 7.4.11.3
- 7. 4. 11.4 nonferrous material; welds exempted in Attachment 9; welds subjected to temperatures above the PWHT temperature range specified in Attachment 8, provided the Welding Procedure specification is qualified in accordance with Section XX and the base material and the deposited weld filler material have been heat treated at the higher temperature; welds connecting nozzles to components or branch to run piping provided the requirements in 7.4.12 are met; weld repairs to
- vessels, provided the requirements for temper bead weld repair are met; weld repairs to cladding after final PWHT provided the requirements for temper b ad weld repair are met; weld repairs to dissimilar metal welds after final
- PNUT, provided the requirement for temper bead weld repair are mat;
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K 7.4.11.5 7.4.11.6 i,-
7.4.11.7
-Zs
WC]
Rai Pac 0
7.4.12 7.4.12.1 7.4.12.1.1 7.4.12.1.2 7.4.12.2 7.4.12.2.1 7.4.12.2.2 7.4.12.2.3 7.4.12.2.4 Requirements for Exempting PWHT of I Component Welds and Branch to Run Pil
- Welds connecting nozzles or branch P-No. 1 materials to components or i of P-No.
1 or P-No. 3 materials the exempted from PWHT, need not be postweld heat treatment if the requi:
7.4.12.1 below are met for partial pa and 7.4.12.2 below are met penetration welds.
The partial penetration welds are A-No.
8 or non-air-hardening chromium-iron weld metal after:
the ferritic materials to be ji buttered or built-up with A-N non-air-hardening nickel-chromium-metal having a minimum thickness o1 and the heat affected zones of the bt built-up ferritic materials are posy treated without the IPWT exempti applied, prior to making the final The full penetration welds are made 1 or A-No. 2 weld metal provided th the component or run pipe is bu buttered in the area of the attach A-No.
1 or A-No.
2 metal having thickness of 1/4";
the A-No.
1 or A-No.
2 weld metal I buttering is postweld heat tz accordance with NB-4620 for P-No. 1 materials without the PWUT exempts applied; the welds do not penetrate th component or run pipe thickness;
- e 23 of 35 uozzles to ping Welds piping of cun piping4 It are not given a rements of enetration for full made with nick elds oined are 1
rttered or tweld heat ons being welds.
with A-No.
at:
Lilt-Up or rment with a minizua buildup or reated in or P-No. 3
,4 Lons being rough the nalysis is h pipe of uildup or weld metal with A-No. 1 or used to join the nozzle P-No.
1 material the buttering; A-No. 2 a or brand weld bt
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13 WCFrB Rev. 5 Page 24 of 35
- 78 1
- 17. 4.12.2.5 the nominal thickness of the weld joining the nozzle or branch pipe to the component or run pipe does not exceed 1-1/2 in.
and the maximum reported carbon content or the nozzle or branch piping connection does not exceed 0.30%;
7.4. 12.2. 6 7.4.12.2.6.1 a 200°F minimum preheat is maintained during welding whenever the nominal thickness of the weld exceeds:
1-1/4 in.
and the maximum reported carbon content of the material of the nozzle or branch pipe is 0.30% or less, or 7.4. 12.2. 6.2 7.4.13
.7.4. 13.1 3/4 in. and the maximum reported carbon content of material of the nozzle or branch pipe connection exceeds 0.30%.
PWHT heating & cooling rate requirements:
Above 800F. the rate of heating and cooling in any hourly interval shall not exceed 4001.
divided by the maximum thickness in inches, but shall not exceed 400F. and need not be less than 100F per hour.
There shall not be a greater variation in temperature, within 15 feet of weld length, than 250'F., with the following exceptions:
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4'
'4 7.4.13.1.1 7.4.13.1.2 7.4.14 7.4.14. 1 P-No. 6 material may be cooled in air from the PWHT holding temperature as specified in.
For P-No. i material the cooling rate at temperatures above 1200'F shall not exceed 1001. per hour, after which the cooling rate shall be sufficiently rapid to prevent embrittlement.
The PWHT shall be performed in accordance with the requirements of one of the following subparagraphs.
Furnace Heating (One Heat) - Heating the item in a closed furnace in one heat is the preferred procedure and should be used whenever practical.
The furnace atmosphere shall be controlled so as to avoid excessive
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0 WCPL8 Rev.
5 Page 25 of 35
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oxidation and direct impingement of flame on
- the component or item is prohibited.
7.4.14.2 7.4.14.3 Furnace Heating (More Than One Heat)
The item may be heated in more than one heat in a
- furnace, provided the furnace atmosphere control requirements apply and overlap of the heated sections of the component or item is at least 5 ft.
When this procedure is used, the portion of the component or item outside the..
furnace shall be shielded so that the temperature gradient is not harmful.
The cross section where the component or item projects from the furnace shall not intersect a nozzle or other structural discontinuity.
Local Heating - Welds may be locally postweld heat treated when it is not practical to heat treat the entire component or: item.
Local vWRT shall consist of heating a
circumferential band around the component or item at temperature within the ranges specified in this Sub-article.
The minimum width of the controlled band at each side of the weld, on the face of the greatest weld width, shall be the thickness of the weld or 2 in., whichever is less.
The temperature of the component or item from the edge of the controlled band outward shall be gradually diminished so as to avoid harmful thermal gradients.
This procedure may also be used for VWHT after repairs.
7.4.14.4 Heating Items Internally -
m item may be heated into appropriate means and with adet and recording temperature de, the control and maintenance distribution of temperature Previous to this operation, th fully enclosed with insulating ASKE SECTION VIII DIV. I 7.5 he component or rnally by an quate indicating rices to aid in of a uniform in the item.
e item should be material.
id in Attachment A,
7.5.1 Preheat temperatures are list.
3.
I if WC8 o5.143 t
III f Rev. 5 Page 26 of 35 7.5.1.1 Where the preheat temperature of the qualified WPS is different than the temperature listed in Attachment 3, the WPS temperature shall be used.
7.5.2 Forritic materials up to and including 1/2 inch shall be preheated to 100°F minimum; 200*F minimum above 1/2 inch to and including 1-1/2 inch; 300°F above 1-1/2 inches.
Preheat shall be maintained for a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> after completion of welding.
7.5.3 The required temperatures and holding times for PlHT of various base materials are listed in Attachment 10.
7.5.4 When pressure parts of two different P-Number groups are joined by welding, the PWIT shall be that specified for the material requiring the higher PWHT temperature.
{;,
7.5.4.1 When non-pressure parts are welded to pressure parts, the PWHT requirements of the pressure part shall control.
7.5.4.2 Ferritic steel parts, when used in conjunction with austenitic chromium-nickel stainless steel parts or austenitic/ferritic duplex steel, shall not be subjected to solution heat treatment.
7.5.5 Nominal thickness, as used herein, is the thickness of the welded joint.
7*5.5.1 When the welded joint connects parts of the.
same thickness using a full penetration butt weld, the nominal thickness is the total depth of the weld exclusive of any permitted reinforcement.
7.5.5.2 For groove welds, the nominal thickness is the depth of the groove.
7.5.5.3 For fillet welds, the nominal thickness is the throat dimension.
If a fillet is used in conjunction.with a groove weld, the nominal thickness is the depth of the groove or the I.
throat dimension, whichever is greater.
.4 -
0 iR Ii wCP4 Rev. 5 Page 27 of 35 S0 q
7.5.5.4 7.5.5.5 7.5.5.5.1 7.5.5.5.2 7.5.5.5.3 7.5.5.5.4 7.5.5.5.5 7.5.5.5.6 7.5.5.5.7 7.5.5.5.8 For stud welds, the nominal thickness shall be the diameter of the stud.
When a welded joint connects parts of unequal thicknesses, the nominal thickness shall be the following:
. a
! j 0
The thinner of two adjacent butt-welded parts including head to shell connections.
The thickness of the shell or the fillet weld, whichever is greater for connections to intermediate heads.
The thickness of the shell in connections to tube sheets, flat heads, covers, flanges, or similar constructions.
The thickness-of the weld across the nozzle neck or shell or head or reinforcing pad attachment fillet weld, whichever is the greater.
The thickness of the nozzle neck at the joint in the nozzle neck to flange connection.
The thickness of the weld at the point of the attachment when a nonpressure part is welded to a pressure part.
The thickness of the weld in tube to tube sheet connections.
For repairs; the nominal thickness is the depth of the repair weld.
7.5.6 7.5.6.1 7.5.6.2 The postweld heat treatment shall be performed, using one of the following procedures:
Heating the vessel as a whole in an enclosed furnace.
This procedure is preferable and should be used whenever practicable.
Heating the vessel in more than one heat in a furnace provided the overlap of the heated sections of. the vessel is at least 5 feet.
When this procedure is used the portion outside of the vessel shall be shielded so that the temperature gradient is not harmful.
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.11I wcL 8 WCA Rev. 5 Page 28 of 35 7.5.6.3 7.5.6.4 7.5.6.5 Heating of shell sections and/or portions of vessels to postweld heat treat longitudinal joints or complicated weld details before joining to 'make a complete vessel.
The circumferential joints requiring PAHT may be locally postweld heat treated by heating a circumferential band which includes such joints. The width of the heated band on each side of the greatest width of the finished weld shall be two times the shell thickness.
The vessel may also be heated internally by any appropriate means.
The vessel should be fully enclosed with insulation material and have adequate indicating and recording temperature devices to maintain control and maintenance of the heat through the vessel wall.
Heating a circumferential band containing nozzles or other welded attachments that require PMHT, in such a manner that the band shall attain the required temperature uniformly and be held for the required time.
The circumferential band shall extend around the entire vessel and its width shall be at least six times the plate thickness beyond the welded joint on either side.
The portion of the vessel outside of the circumferential band shall be protected so that the temperature gradient is not harmful.
Heating the circumferential joints of pipe or tubing by any appropriate means over a band having a width on each side of the center line of not less than three times the greatest width of the finished weld.
The portion outside of the heated band shall be protected so that the temperature gradient is not harmful.
PWHT -operations shall meet the follovina The temperature of the furnace if used, shall not exceed 800°F at the time the vessel or part is placed in it.
- 1 1'
7.5.6.6 7.5.7 7.5.7.1
.0 A.
G aq2 30
~WCPAi Rev.
5 Page 29 of 35 7.5.7.2 Above 800°F, the rate of heating shall not be more than 4000F per hour divided by the maximum metal thickness of the shell or head plate in inches, but in no case more than 400W F per I hour.
During the heating period there shall I not be a greater variation in temperature throughout the portion of the vessel being heated than 250F within any 15 foot interval of length.
7.5.7.3 The vessel or vessel part shall be held at or above the minimum specified temperature for the period of time specified.
During the holding period, there shall not be a greater JI difference than 150?F between the highest and lowest temperature throughout the portion of the item being heated.
7.5.7.4 During the heating and holding-periods, the furnace atmosphere shall be so controlled as to avoid excessive oxidation of the surface of the vessel.
The furnace shall be of such design as to prevent direct impingement of the flame on the vessel.
7.5.7.5 Above 800°F, cooling shall be done in a closed furnace or cooling chaber at a rate not greater than 5000? per hour divided by the maximum metal thickness of the shell or head plate in inches, but in no case more than 500*F per hour.
Below 800'F, cooling may be in still air.
7.5.8 The PWHT for; SA-517 and SA-592 materials with a nominal thickness of.58 inch to 1-1/4 inch inclusive, may be waived provided the following conditions are met:
7.5.8.1 A minimum of 200'F preheat and a minimum 400*F interpass temperature is used.
7.5.8.2 After completion of welding and before the weldment has cooled below the minimum preheat temperature, the weldnent is heated to 400wo and maintained at that temperature for a uinimum of 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
Is
8
.(1 wdV-8 Rev. 5 Page 30 of 35 8
1i 7.5.8.3 7.5.9 7.5.9.1 7.5.9.2 7.5.9.3 7.5.9.3.1 7.5.9.3.2 7.5.9.3.3 All welds are examined by nondestructive examination in accordance with provisions of the Part UHT (ASME Sec. VIII).
Weld repairs on vessels that have been PWHT shall require PWHT after repairs except as permitted below:
When higher preheat temperatures are utilized; When the half temper bead technique is performed; Weld repairs to P-No. 1 Group Nos. 1, 2, and 3 materials and to P-No. 3 Group Nos.
1, 2, and 3 materials and to the weld metals used to join these materials may be made after the final PWHT but prior to the final hydrostatic test, without additional PWHT,- provided that PWHT is not required as a service requirmant.
The welded repairs shall meet the requirements of (7.5.9.3.1) through (7.5.9.3.6) below.
These requirements do not apply when the welded repairs are minor restorations of the material surface, such as those required after removal of construction fixtures, and provided that the surface is not exposed to the vessel contents.
PCI shall give prior notification of the repair to the user or to his designated agent and shall not proceed until acceptance has been obtained. Such repairs shall be recorded on the Data Report.
The total repair depth shall not exceed 1-1/2 in. for P-No. 1 Group Nos. 1, 2, and 3 materials and 5/8 in. for P-No. 3 Group Nos.
1, 2, and 3 materials. The total depth of a weld repair shall be taken as the sun of the depths for repairs made from both sides of a weld at a given location.
After removal of the defect, the groove shall be
- examined, using either the magnetic particle or the liquid penetrant examination methods.
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(I 1-WCP-8 Rev.
5 Page 31 of 35 0
E3 43 Li 7.5.9.3.4 7.5.9.3.4.1 7.5.9.3.4.2 7.5.9.3.4.3 7.5.9.3.5 In addition to the requirements of Section IX for qualification of Welding Procedure Specifications for groove welds, the following requirements shall apply.
The weld metal shall be deposited by the manual shielded metal arc process using low hydrogen electrodes.
The electrodes shall be properly conditioned in accordance with Section II,, Part C, SFA-5.5, Appendix A5.6.
The maximum bead width shall be four times the electrode core diameter.
For P-No. 1 Group Nos. 1, 2, and 3 materials, the repair area shall be preheated and maintained at a minimum temperature of 200"F during welding.
For P-No. 3 Group Nos. 1, 2, and 3 materials, the repair weld method shall be limited to the half bead weld repair and weld temper bead reinforcement technique.
The repair area shall be preheated and maintained at a minimum temperature of 350F during welding.
The maximum interpass temperature shall be 4504F.
The initial layer of weld metal shall be deposited over the entire area using 1/8 in.
maximum diameter electrodes.
Approximately one-half the thickness of this layer shall be removed by grinding before depositing subsequent layers. The subsequent weld layers shall be deposited using 5/32 in. maximum diameter electrodes in such a manner as to assure tempering of the prior weld beads and their heat a-ffected zones. A final temper bead weld shall be applied to a level above the surface being repaired without contacting the base material but close enough to the edge of the underlying weld bead to assure tempering of the base material heat affected zone.
After completing all welding, the repair area shall be maintained at a temperature of 400'F-500OF for a minimum period of 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
The final temper bead reinforcement layer shall be removed substantially flush with the surface of the base material.
After the finished repair weld has reached ambient temperature, it shall be inspected I
........;....... '3 -.-
i
' RllvC*8 '
Rev. 5 Gz Page 32 of 35 using the same nondestructive examination that L.
was used in 7.5.8.3 above, except that for V
P-No.
3, Group No.
3 materials, the Ir examination shall be made after the material has been at ambient temperature for a minimum period of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> to determine the presence of possible delayed cracking of the weld.
If the examination is by the magnetic particle method, only the alternating current yoke type is acceptable.
In addition, welded repairs greater than 3/8 in.
deep in materials and in welds that are required to be radiographed shall be radiographically examined.
7.5.9.3.6 The vessel shall be hydrostatically tested after making the welded repair.
7.6 ASHE SECTION XI 7.6.1 Repair welding by the Temper Bead Technique shall meet the following requirements:
W 7.6.1.1 Repairs shall be performed as specified in the I Owner's Repair Program.
7.6.1.2 Welding procedure specifications shall be I approved by the Owner's Quality Assurance Program.
7.6.1.3 The Welding Manager shall review all documents to insure compliance with the applicable code sections.
7.7 NATIONAL BOMAD INSPECTION CODE 7.7.1 Recommended preheating temperatures shall be in accordance with Attachment 3.
7.7.2 Preheat temperatures listed on the qualified Welding Procedure Specification shall list the preheat temperature.
In such cases where this i
temperature is different than the temperature listed on Attachment 3, the WPS shall govern.
7.7.3 Postweld heat treat requirements shall be in accordance With the applicable section of the ASNE Code.
.1
- 3 WCA8 Rev. 5 Page 33 of 35 6
ff 7.7.4 7.7.4.1
'I.,
r 4_
7 7.4.1.1 7.7.4.1.2 7.7.4.1.3 7.7.4.1.4 7.7.4.1.5 Under certain conditions and approval by the Authorized 'Inspector, alternate methods to PWHT nay be used as follows:
Higher preheat temperature Applicable to P-No.
1, Groups 1, 2,
and 3:
P-No.3, Groups 1 and 2 (except Mn-Mo steels) only.
Preheat temperature of 3001F minimun, a minimum distance of 4
inches or four times the material thickness (whichever is greater) on each side of the joint.
The maximum interpass temperature shall not exceed 4500F.
When a partial penetration weld is made, the preheat and interpass temperature need only be maintained a distance of 4 inches on each side of the joint or four times the depth of the repair weld, whichever is greater.
These provisions apply where toughness characteristics in the as welded condition are adequate at operating pressure test temperatures.
Half-bead temper welding technique.
Us. of this technique requires approval from the Welding Managera The Welding Manager shall prepare an instruction -to the PWHT Technician for weld specific PWHT requirements as described in 2.
7.7.4.2 8.0 QOCUKZTAT=
8.1 8.2 8.2.1 Documentation of time, and temperature as required by. the applicable Code and design document shall be maintained on each PMT.
For PWHT, time-temperature charts with the following information shall be included as a minimum:
Date and time of PWHT (including start and completion time).
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WC#O8 Rev. 5 Page 34 of 35 8.2.2 Weld number 8.2.3 Item/component identification (equipment piece number, valve number, etc.)
8.2.4 Welder(s) symbol.
8.2.5 Calibrated recorder identification 8.2.6 Applicable scale indications for chart (i.e.,
travel speed).
8.2.7 Required holding temperature and time.
8.2.8 Heat treatment operator's name.
8.2.9 Heat treatment procedure and applicable revision.
8.2.10 Map of thermocouple placement for ASHE Code items.
8.3 Flow of documentation:
8.3.1 After completion of the PWRT, the Welding Manaver shall review the documentation to ensure that the Code and WPS requirements have been satisfied.
He shall sign and date the documents and forward then to Quality Control.
8.3.2 Quality Control shall review, sign and date the documents ensuring that the PWHT was properly conducted, instruments used were calibrated when required and Hold Points have been satisfied.
These documents shall be made available for the Authorized Inspector's review.
0
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Gi5 9.G 89.0 A=
F!
WCP-8 Rev. 5 Page 35 of 35 kCHMENTS
.- 0 9.1 Preheat Requirements for ASHE B31.1.
9.2 Preheat Requirements for ASME B31.3 9.3 Non-Mandatory Preheats ASME Section I and VIII (Division I).
9.4 Non-Mandatory Preheats for ASHE Section III, Appendix D.
9.5 Postweld Heat Treatment Requirements for ASME B31.1.
9.6 PWHT Requirements for ASME B31.3.
9.7 PWHT Requirements for ASME Section I.
9.8 ASME Section III Requirements for PWHT of Welds.
9.9 ASmE Section III Exemptions to PWHT Requirements.
9.10 PWHT Requirements for ASME Section VIII.
9.11 Electrical Resistance PWHT Example.
9.12 Weld Specific PWHT Requirements.
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q
- NOTES:
WELDING PREH{EATS EOR ASE B31.1 1.
- 1)
The preheat requirements listed herein are mandatory minimum values.
- 2)
When welding two different P-Number materials, the minimum preheat temperature required shall be the higher temperature of the material to be welded.
- 3)
Thickness referred to is the greater of the thicknesses at the weld for the parts to be joined.
nominal I..
- ~I-
- 4)
The preheat temperature shall be checked by use of temperature-indicating crayons, thermocouple pyrometers, or other suitable methods to assure that the required preheat temperature is obtained prior to and uniformly maintained during the welding operation.
o_I i:.,
- 7-'
175-F for material which has both a specified maximum carbon content in excess of 0.30% and a thickness at the joint in excess of 1 inch; 506F for all other materials having this P-Number.
175F for material or product form which has either a specified minimum tensile strength in excess of 60,000 psi, or a thickness at the joint in excess of 1/2 inch; 50*F for all other materials having this P-Number.
P-No. A 250-F for material or product form which has either a specified minimum tensile strength in excess of 60,000 psi, or a thickness at the joint in excess of 1/2 inch; 500F for all other materials having this P-Number.
400OF for material which has either a specified minimum tensile strength in excess of 60,000 psi, or has k= a specified minimum chromium content above 6.0% and a thickness at the joint in excess of 1/2 inch; 300*r for all other materials having this P-Number.
Attachent 1
~P-B ge 2 of 2 WELDING PREEATS FOR ASME B31.1 G P-No 6 400'F for all materials.
P-No f
7 50F for all materials.
P-NQ. 8 50 F for all materials.
P-No. 9 250F for P-No. 9A materials.
300;F for P-No. 9B materials.
p-No. 10E 300-F with an interpass temperature of 450FP maximum.
Materials not listed on Attachment 1 shall be preheated in accordance with the qualified welding procedure.
I.
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( sk ASIE B31.3 1 C T TEMPERATURES I
U.A Specifled M in.
ase ens te to Netal Vead Metal ase
%ominsIlailt Strength*
N In.TOeratute P. No Analysis Metal Thicknes loset Metal Rgaufrid Lome-Dlotel)]
A
- m.
troup in kil 1
1 carbon Steel
'1 71 50 Li A I I 1TS Altl
- 71 175 3
2,11 Alloy SteeIs,
'1/2
'C 71 SO CrII2S L>1 /Z All 1...
17 A lt
- 71 173 43 A lloy Steels Al I All 300 1/Zg-C r 5 5 Alloy Steels All I
All 350 2-1 /A
- cr'_1=
6 6
N igh A tloy A lt All 3002 S tee*
l Martens it Ic 7
7 igh A lloy A lt A lt SO Stee os F rr I t ic a
S.9 N igh A lloy Al Al l A.
SO Steels Austen Itic 9A
,n 10 N ickel lloy t Alt All 200 S tee I 10 Cr-Cu Steel A tt A Il 300-400 10A n-V Steel A ll All 175 tt O..
27C r Steel A l A l 300 tIA SCI ami *9N I Steel All A ll A
IIA SG2 Slit Steel A ll All 50 21-51 A ll All SO I
II II NOTE S:
1 )
Spec ia l P -uombers CSP -1,SP -2 SP -3,SP -4 and SP -
) r The required thermal treawent for Special P-Ntnbe the engineering design and demonstrated by the wel C2 n a*imh Interposs temperature 6000F.
C3) Maintain interposs temperature between 350or F*3gOF
-squire special consideration.
re shall be established by ding procedure qualification.
_-i
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NON-MANDATORY PhETREQUIREMENTS
£ ASME SECTION I AND VIII 1DIVISIJON 1n C:
P--o. 1. GrouD No. 1. 2. 3 1756 F for material which has both a specified maximum carbon content in excess of 0.30% and a thickness at the joint in excess of 1 in.;
50F for all other materials in this grouping.
P-No. 3. Group No. 1. 2. 3 175*F for material which has either a specified minimum tensile strength in excess of 70,000 psi or a thickness at the joint in excess of 5/8 in.;
50*F for all other materials in this grouping.
P-No. 4. Group 1. 2 250*F for material which has either a specified. minimum tensile strength in excess of 60,000 psi or a thickness at the joint in excess of 1/2 in.;
50oF for all other materials in this grouping.
Poli. 5. GrouR No. 1 2 400F for material which has either a specified minimum tensile strength in excess of 60,000 psi or has both a specified minimum chromium content above 6.0% and a thickness at the joint in excess of 1/2 in.:
300-F for all other materials in this grouping.
P-No.
- 6.
GrouR No.
- 1. 2.
3 4006F.
P-No. 7. GrouR No. 1. 2 None.
P-No. 8. Grouo No. 1. 2 None.
P-No. 9A. GrouD No. 1 250 F.
A achment3 g8 2 of 2 a.
FQK G
1 P-No.~B.
rogy No. 1
-MMATORY-PREHEAT IEMENTS SECTION I AMD VIII (DIVISION I) 3000F.
P-No. 10 GrouR 175*F for P-No. 10A Gr. No. 1 materials; 250*F for P-No. 10B Gr. No. 2 materials; 175*F for P-No. 10C Gr. No. 3 materials; 3006F for P-No.
10E (with interpass maintained between 350OF and 450-F) 2506F for P-No.
1lF Gr. No.
6 materials; For P-No. 10C Gr. No. 3 materials, preheat is neither required nor prohibited, and consideration shall be given to the limitation of interpass temperature for various thicknesses to avoid detrimental effects on the mechanical properties of heat treated material.
For P-No.
10D Gr. No. 4 and P-No. 10E Gr. No. 5-materials, 300F with interpass temperature maintained between 350*F and 450F.
- P-No. 11 Groun I
a)
P-No.
Group Group Group Group 12lA No.
No.
No.
No.
Group 1 -
None (
2 -
Same a 3 -
Same a 4 - 250F.
see Note).
s for P-No.
s for P-No.
5 (see Note).
5 (see Note).
b)
P-No. lB Group Group Group Group Group Group Group No.
No.
No.
No.
No.
No.
No.
Group 1 -
Same 2 -
Same 3 -
Same 4 -
Same 5 -
Same 6 -
Same 7 -
Same as for as for as for as for as for as for as for P-No.
P-No.
P-No.
P-No.
P-No.
P-No.
P-No.
3 (see 3 (see 3 (See 3 (see 3 (see 5 (see 5 (see Note).
Note).
Note).
Note).
Note).
Note).
Note).
MMT8:
Consideration shall be given to the limitation of interpass temperature for various thicknesses to avoid detrimental effects on the mechanical properties of heat treated materials.
DenotesSection VIII (Division I) recommendations only.
DenotesSection I recommendations only.
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Attlchment 4 WCF('%8 Pag! 1 of 2 NON-MANDATORY PREHEAT REQUIREMENTS 0 _
ASHE SECTION II;, APPENDIX D P-Number 1. GrouD 1 2006F is suggested for material that has a maximum carbon content of 0.30% or less and a thickness in excess of 1-1/2 inch. 250-F is suggested for material that has both a maximum carbon content in excess of 0.30% and a thickness in excess of 1 inch. This does not apply to fillet welds 1/2 inch and less in size that are used to attach insulation clips and other parts not carrying loadings due to internal pressure.
50OF is suggested for all other materials in this group.
P-Number 1. GrouR 2 200OF is suggested for material that has a maximum carbon content of 0.30% or less and a thickness in excess of 1 inch.
250"F is suggested for material that has a maximum carbon content in excess of 0.30% and a thickness in excess of 1 inch.
W~
P-Number 1. Group 3 and P-Number 3 and P-Nuiber 1lA 250*F is suggested for material that has either a specified maximum tensile strength in excess of 70.0 ksi or a thickness at the joint in excess of 5/8 inch.
50*F is suggested for all other materials in this group.
P-Number 4 300*F is suggested for material that has either a specified minimum tensile strength in excess of 60.0 ksi or a thickness at the joint in excess of 1/2 inch.
50*F is suggested for all other materials in this group.
P-NU~ber 5 400*F is suggested for material that has either a specified minimum tensile strength in excess of 60.0 ksi or has both a specified minimum chromium content above 6.0% and a thickness at the joint in excess of 1/2 inch.
300F is suggested for all other materials in this group.
f.
I*
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Atiachment 4 W -8 P4 e 2 of 2 NOWN-MANDATORY PREHEAT REOUIREMENTS ASME SECTION III. APPENDIX D C
-J 4006F is suggested for all materials.
P-Number 7 and P-Number 8 None is suggested.
300*F is suggested for all materials.
R-Nubtbr 10 175F is suggested for P-Number 10A.
250IF is suggested for P-Nunber 10B.
Preheat and interpass temperatures should be controlled for various thicknesses to avoid detrimental effects on the mechanical properties of heat treated material.
300'F is suggested for P-Number lOD and P-Number 1OE with interpass at 300-450*F.
i i
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A 6
=
1 of 6 I
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I
- Hol0dirg Tim Bae an 2cd l
ckndess Per 5I IrtPre Up to 2 in.
Over 2 in.
F P-o. 1 1100 to 1200 1 hour/inci 2 hr. plus 15 min.
Gr. Nos. 1, 2, 3 15 min.
for eac iticr81 minim.m irnci oer 2 in.
N=5:
I.
FW!r of P-No. 1 materials is not mardatory, ptovided that all of the folluing =xditiocs are met:
a)
The rninal thicknes, as defined in Paragrp 7.1.7, is 3/4 in. ar 1s; b)
A mini= pXeheat of 2000 F is awlied whm the thickness of either of the base metals exasds 1 ixch.
II.
M= it is iupatical to S at the terarnge ifiul, it is pemissible to perfor the of this mterial at lower t tu far lancer periods of tim in aordanc with the alternate table at the end of this atta t.
Holding Tim Bad ao P-Nber ld UTeraPre p to 2 in.
Over 2 in.
PB
. F P-No. 3 1100 to 1200 1 )xur/inch 2 hr. plus 15 mi.
Gr. Nos. 1, 2, 15 min.
for eachaditdicra minimi inch oer 2 in.
NTh:
I.
IWr of P-No. 3 materials is following coditicr arm et:
a) lie rninal thickness, as los; not mxdatory, prvideld that all of the defined in Nragraph 7.1.7, is 5/8 in. or
We2 of 6 I0 FE Pm B311 I
b)
A minima preat of 2000 F is appied when the thicknes of either of the bae metals exoeeds 5/8 inch; c)
Me specified cartxx content of the P-Ho. 3 bHse material is 0.25% or 1s.
- 31.
Mm it is ipractical to P at the teperature rarne specified, it is ruible to perform the Piur of this material at lower tateat for leer periods of tive in a srdam with the alternate table at the an of this attest.
k HOing Time Based ln t
atre UP to 2 in.
Over 2 in.
Rane F P-No. 4 1300 to 1375 1 bxr/inrh 2 hr. plus 15 min.
Cr. NOs. 1, 2, 15 min.
for each aitiona.1 minim=
inch aw 2 in.
NO=:
Or, I)
IW is not MaryatoiY for P-o. 4 material urxer the followig cxitiom:
a)
Welds in pipe or attachmnt welds to pipe ca1lyin with ali of the foUswing cilitias;:
- 1.
A reiuz-noinal pipe size of 4 irk;
- 2.
A uin terial thicness of 1/2 inrh;
- 3.
A =)dmz specified carbon content of the material to be wlded of 0.15%;
- 4.
Appliction of 250 F minim= preheat aring welding.
b)
For seal welding of threaded or other manical joints prauided:
- 1.
The seal weld has a throat thickness of 3/8 in. or 1s
- 2.
A minis preheati of 250° F duing weldirq is applied.
0 i
II i
I
- 1. 4.
- .IMN X kr
, 0 C
L.
t-f Holding Time Based on Ncn1Thiduess P kzcbe Holding Theratuze Up to 2 in.
Over 2 in.
Parne. F P-No, 5 1300 to 1400 1 how/ifni 2 hr. plus 15 Sin.
Gr. No.
1, 2, 15 mi.
for eac aditional miniimn inhi over 2 in.
- =
I.
p~r is xt wnatory for P-No. 5 material unxer the follawing cxrditicws:
a) welds in pipe or attachet welds to pipe xmplying with all of the follcwing cm-ditions:
- 1.
A rxdum noinal pipe size of 4 imte;
- 2.
A wdan mterial thidcnes of 1/2 irnc;
- 3.
A Dxi== specified chrcitu ontet of mterials to be welded of 3.0%;
- 4.
A -wxim specified carb c.ntet of the interial to be wele of 0.15%;
- 5.
Alicaticc of 300° F ininim preheat cwing veldin.
Hblding Tim Based N
Thicness EbrHldin Teerabre Up to 2 in.
Over 2 in.
Rar F P44o. 6 1400 to 1475 1 hoi/irdh 2 hr. plus 15 ain.
Gr. Noe. 1, 2, 3 15 min.
for eh aiticnal minm irci aovr 2 in.
J.
pWR is rvt miratory for P-o. 6 uaterial under the followiig aditics:
a)
For Type 410 Wterial prOv d:
- 1.
7fh specified carbo content is nt than 0.08%;
- 2.
mf nxi- -
1teria1 thica s is 3/8 indh;
- 3.
7he weld is md with A-o. 8, A-Mo. 9, or F-No. 43 filler =tal.
i.
I'IC, C;q 5
4 of 6 I
Ioldimg Tin Bsed on N
nlikns P N a Pr olding Ttuperatre Up to 2 in.
Over 2 in.
1arUe. F P-N.
7 1350 to 1425 1 hriar/ircii 2 br. plus 15 min.
Gr. Nos. 1, 2 15 =ini.
for eac aitional miriun indh over 2 in.
I.
In lise of the ooling rate in PEragraph 7.1.8, P-o. 7 iaterial cxoling rate shall be 100l F per hur maximn in the rarge aboe 1200" F after itdch the cooling rate shall be sufficiently rapid to prevent ittlemnt.
II.
MUHT is rmxt matory for P-No. 7,aterial unxer the following nitias:
a) r I~nm 405 material provided:
- 1.
'fw specified Cali omteit is rnot than 0.08%;
- 2.
7he dm u Ra terW LAdmew is '3/8 inrh;
- 3.
71e wed is made with A-N.
8, A-No. 9,
=r F-No. 43 filler Ratal.
II Holding Tir BaDW cn P-Ikaer Holdizg lUure tp to 2 in.
Over 2 in.
Faroee. F P-N.
8 Nne NMu Gr. Nos. 1, 2, 3 tE5:
I.
ME is reither re$ired nor prtibited for joints bekam P-No.
8 itic a.ins steels.
0
U E__
C lo I^
c 5
Ag~e 5 of 6 FM AS4E B1.1 I
d in Ti Based an Nomuinal Thickoess P lk r
Holding Terature Up to 2 in.
Over 2 in.
Baine. F P-No. 9A 1100 to 1200 1 hor/indc 2 hr. plus 15 min.
Cr. No. 1 15 min.
for each aitional
- iin ch over 2 in.
I.
When it is jipractical to PHU at the te ture rare pified, it is euible to perform the FPi of this mterial at lcoer tee.Maresu for lamer periods of tim in ardanc with the alternate table at the end of this attacment. Hover, the minim= EdU shall not be less that 1000e F.
II. OWr is not mandatory for P-No. 9A material uex the follyding Crnditi=:
a) welds on pipe or attacmnt welds to pipe omplyin with all other the follow ing oditics:
- 1.
A nare retinal pipe size of 4 irs;
- 2.
A raxiu material thickness of 3/2 inch;
- 3.
A tyxin specified carbon content of the material to be weld of 0.15%;
- 4.
AMpicatiCn of 250° F munis preheat durirq weldirs.
Holding Tim ~e1 Eai N~n1Thidoies P-N~x~er Hldirq T~rTMr UP to 2 in.
Over 2 in.
P-No. 9B 1100 to 1175 1 bcuar/inch 2 hr. plus.15 31in.
Gr. No. 1 15 mmn.
for each aditicxnal xin~irin inchi ovr 2 in.
N=:
I 0
I.
i1en it is ticl to 1AIU at the teserature ranxe xpecified, it is e ible to perform the FWW of this rterial at lc r t for jm periods of tie in accadarn with the alternate table at the wd of this attahet.
Haiever, the mrinimm SI t---ernc xture shalI not be 1l than 10006 F.
i
M I
5 6 of 6 s
HEA~T I
II.
TsW of P-No. 9B weterial. is r midatory for xteria1 thidouss of 5/B in. or less prviding the Weldim Procdire Qualificati r has be i ui5g 3terial of thicness equal to or greater than the proxdutici weld.
ID V.-
1..
k..
I..
Holding Ti Based n N~nal Tlhicmngm P,~~~
?
uerHldn T
e Up to 2 in.
Over 2 in.
ame. F P-No. 10E 1250 to 1300 1 hour/inch 2 hr. plus 15 min.
Gr. No. 5 15 miin.
for each aiticnal miniz=
iich over 2 in.
I.
In lieu of the cxoling rate in Paragraph 7.1.8, the P-No.
.OE Uterial coolinu rate shall be 100°F per hour minimn in the rarge above 1200*F after 4&idi the ooling rate sball be sufficiently rapid to prevert erittlwt.
AlternatA Postwed Bffeat Tatnt Irpdxrts For Cmabo and~ kpr Mov Steels Dcr'ease in lMinn Holding Tim at Below Miniun Specified Deased T
ata sF hr/in [Note (3)]
50 2
100 4
150 (Note 2) 10 200 (Note 2) 20
- 1.
Posteld beat treatment at lower tsperatures for laeer periods of tim, in vrdance wi this table, shall be used cmly where permitt.d in th tables of this Atta zt.
- 2.
A decrease of re than 100"F. belo the miniun spectified tmratnm e is alloble cnly for P-No. 1, Gr. Nro.
1 and 2 mterials.
- 3.
Tiu s1own apply to thidcum u to 1 in.
Add 15 uirin. at thido for thid a-in greater than 1 in.
I
.,A
- -
I 1-1 AIIAC111 6 NiII/AS 631.3 T~AI WWIKWKIS Me0 MAT T*EATNWU 47w.-?b -4, I rj.) C-1 C' i;;III si Os I n.
eioifng tima 11ia ino wall gt~t.
iftil Wrin.
Kin.
ploal eldpetl 1"#
m.W*
lael..
Tomprsture Vminel Tim.
- Ifirnal P-0"amIr Analysis Xatt JI (bl, (2))
hr UmtW~s tuot* (1)1 A-*JAW reiW on.
hi I
I 3
2.11 4
3 Carbo Steel Alloy steels.
CrO1212 Alloy steels,
'3,'
'3,'
Alt
.1/2 All Alt AltI 471 ill p71
'71 All O71 5
4,5 Alley steel.,
"loig alley stools wertanotlie A 140 or. 429 7
7 Nigh alley etelso forrItic 0
0.9 Nigh Saley steels oustmh Itc if~t 16 niehlt oller stools Vene 1100. 120 1100-132 1100-O32 Some 1300-1373 1300-1373 NoNW 1300-1400 1350-14S0 1150-1225 None None s1/2
- 1/2 All All All Alt All All All All 1
1..
1 1
iii 1
I 225 1
2 225 I
2 225 X
1 2
241c 1
2 2412 D
C All All cr-cia steel
- mV Itif I v3/4 All 4N 4 All All
- 2
- 2 All All All 171 All All All All All All mone 1400-I 150 1100-1300 1100-1300 122-1300 Note (5)
NmW 1025.10f65 1025-I,'
1/2 1/2 I
1/2
'i "af hA4 9el 27 Cr stl
.. Cr-il-mv ot 11 1.91 Beto~
Iso1 gteal I
I I
1 1
1 1/2 I12 I
I 225 225
,, r-. _
.j I-itI.4
.1 I
9 II
-1) i 14 I.-
tim so
-J
.0
", ":. v-.
. -,:*\\..
--1
-.- -. -. I
a, j% -,: Y,...
ad;
11tla0W pemjakt~*.-
W71fl (I) sppdelo and~eP.5-.D*.P
' 0-5) requilre speelel twoideratIu'i.
The raqwfroe thermal treatent for apeeati P."u~et shtl be votoafokewd by the avinvoluw doolon wii utietwed by the welding proedeuve quatlfestion.
(*) Fee It *qjivaenmt. I'.*,
divide hr/Its, by *5.
(3) Cool oo rapldly so possible after th. held peerled.
(4) Costins rate to 1204F shell be lees than 100@Uflw;r thereafter, the cesling raet *MeI, be feet eve~
to peevet ombfIttlet.
(3) Poetweld beet tr"tment to neithtr required rer prehibited, bvt uw. heet trostm epplied eshel be pswfer~
at ¶100U.1,00 followed by rapid Coot I"$.
(4) coating rote shell be *300*f/hr to &ICOF.
-0 CD~
A-_
to E:i:
CD g.^ :V,,I" 0
!I-- -I-
- I
.1 I.'..
L I 'l-1,
. I 11INOMAW
. ft 14 (I~
Attiwt 7
PFe1.l of 13 1..
OF PRE PMSD AND=
Minir Holding Ti at Normal Mini e
rature for Weld Thickness Holdin I
aterial T
- ture, F.
up to Over 2 in.
Over 5 in.
2 in.
to 5 in.
P-No. 1 1100 lhr/in.
2 hr plus 2 hr plus GzaV No.1,2,3 15 min.
15 min. for 15 min.
mininsm each adi-for eaci tional inc aditina over 2 in.
inci over 2 in.
~flS:
I. I
- 1) ctwed heat treatet is not manratory for P-No. material ndr the follwing conditions:
(a) for ciruferential welds in pipe,tb or headers Ae the pipe, tes or headers cxuply with a nrninal wall thickness of 3/4 in. or less at the joint (b) for fillet welds used cn Slipuo and societ welding fla a
fittings sFAM the follawing cditions are mt:
(1) a fillet weld throat thidcawss of 1/2 in. or less, regardles of base metal thiclriess (2) a ziniam preheat of 200 F whm the thicbwss of a presure part at the Weld excds 3/4 in.
(c) for fillet welds attaching n urese parts to presure parts that have a thrvat thisckns of 3/2 in. or less, provided pr~eat to a ini ture of 200 F is aplied *hen the thic of the pressre part e~ee 3/4 in.
(d) for welds used to attadh extee heat aborbin surfacx to te and irmilaticrn attachmnt pins to pressre parts (e) for tbes or pressure retaining hanbjle arn inxspcicn plugs or fittigs that are secuxed by physical mmm (rollin, shoulder cucxtiac, mine thres, etc.) and real welde, provide the seal weld has a throat thickness of 3/8 in or less.
(f) for stius weldd to pressure parts for purposes not irnluded in (d) above, provided prehat to a minim t
of 200° F is applied gn the thicks of the press part eaees 3/4 in.
-f.
ANWO evc Attadc nt 7 WC1-8 Page 2 of 13 ASME SBQTIONI I
xA;DkllmR I,-RE,;MM FCR PIST%=
HER ThE Tr
-F ';-TURE PAMS AND AI(T 1F1S
!; r tc
-tr-;Dt welded attactient of P-No. ', Group Nos. 3. and 2 mater a1 in fLeFbe boilers if the depth of the weld qrweve or preparation does not exced
.375 in., provided a rninimucn preheat of 200' F is applied when the tubeshet thickness exceeds 3/4 in.
_.Wer. it is L=practical to PvHr at the terperature range specified, it is per-casskile to perform the PFWI of this material at lower temperatures for
- q periods of time in ac::rdarne with the alternate table at the end of tr is atad-.z>en.
2
.tr
~o. G Cr-p Nc. I aterials, the postweld heat treatment requirement f r tubes welded to tubelar manifolds or headers is not mandatory when all zl ihe follwing conditiors are met:
'a;
- te t-ubes do not exceed 2 in. O.D.
IC* the !eader does not exceed 8 in. nnira1 pipe si:e
.iC the header te-c}:ness does nt exceed 1/2 irM a a r.
- r. pr.eat of 200 F is applied.
Minim= Holding Time at Normal Minimum Tenperature for Weld Thickness Holding
_(
Naminal) niz:erial
-erature, F.
Up to Over 2 in.
over 5 in.
2 in.
to S in.
-!;C.
10o0 1 hr/in.
2 hr plus 15 2 hr plus 15 G3r p No. t.2-3 15mn min. for each mrn. for each iirsnn additional additional irch over inch aver 2 in.
2 in.
.:i et
'r
-*rSp No.
3, postweld heat treatment of P-No.
3
.m-raterials is rot andatori under the follwing conditions (postweld heat t::
.t
- s m&rdato:.. for P-No.
3 Group !o.
3 materials for 'all f-r c-r-rerential welds in pipe, tubes, or headers where the pipe, tbes.,
or.hees caply with both a naoinal wall thickness of 5. 8 in.
or :ess.
and a specified maximum carbon cntent (SA naterial specif iztion carbon content, except when further 1irmited by the
A
~3 h-U 7
>g 3
of 13
_.r
?&E SFXJ1'Ct T 9
PABEES=
B)
AND~~T I
purcime to a val.ue within the specificaticn limits) of not mre than 0.25%.
(b) for fillet weli used a socket waldin fittings when the followin codtio are wt:
(1) a fillet wld throat thicknes of 1/2 in. or less, rgardless of ae tal thidcns (2) a admn speified carbn ca tent (SA iterial s icaticm ca1n ccriteryt, exet he further limited by the Purchaser to a value within the specificatiox limits) of riot =xe than 0.25%.
(3) a zinim preheat of 2000 F when the thickness of a pressre part at th wild 5/8 in.
(c) for fillet wMlds attadirM rpre parts having a speified Aamu caro asit (SA mterial cification carl
- cmtnt, ect when further limited by the Purd;xr to a value within the specificati limits) of not wre than 0.25S that have a throat thidc of 1/2 in or less, provided preheat to a minim= teste of 200 F is aplied n the premre part s
5/8 in.
W (d) for wids used to attach extwdad heat-absorbing surfaec to t s and Inulatiou attac+/-et pins to pressure parts.
(e) for tiu or pressur retaining hantdle and inspection plus or fittings that are seazred by physical mnars (rolling, shlder
- truxtin, machine threa, etc.) and seo lded, proid seal wid has a throat thidcness of 3/8 in. or less.
(f) pocbtd heat treatmt is rnt mIaratory for studs weldd to pressue
- parts for prpoes no included in (d) abve and widch have a spifi adm carbon otet cf rnt more than 0.25% (SA mterial C spTcifi cca ontent, exept w.en futhr limited by Purdcasr to a value within the specificaticn limits), provid a preeat to a inim t
t of 200 F is aplied when the thickess of the prese purt ecoeds 5/8 in.
(2)
Whn it is iu1ractical to MU at the tem tura rarge specified, it is per=issible to perform the
}WU of this material at lower tperaturus for lcxg periocs of -tie in ardanme with the alternate table at the end of this atset.
(3)
Noe (1) not ajppy to welds using the Inertia ard cotimxIE drive frictioi widirg pronses. Poeld heat trent is mradatozy for all
_thicnes of uftarinls wided using inertia and contluns drive friction A
welding.
Arr 1*
htt#nnt 7 VI 4 of 13 1:
,I HMO=
MM REEMFMVA
!EPES=PMAD Kinimu Holdiu Time at Normal minimu Tperature for Weld Thicdre56 tNinall Mterial
,awe
°F.
Up to Over 2 in.
Over 5 in.
2 in, to 5in, P-No.4 1100 1 hr/in 1 hr/in.
5 hr plts 15 Grmup No. 1,2 15 min min. for each inh er 5 in.
~th:
(1)
Pteld heat treazten is not mrdatory for P. No. 4 materials under the follorirg coditiczs:
(a) for circferential welds in pipe or tubes where the pipe or tb csu41y with all of the follwuq riition:
(1) a Dxi-rxinal outside diameter of 4 in.
(2) a-miuthickness of 5/8 in.
(3) a fdum specified arban citent (SA raterial specificatian cazbr cxntnt, eaept gwm fuher limited by the Purdcasex to a valu within the ificaticn limits) of no.m re than 0.15%.
(4) a Aini p
at of 250 F. This uiniu preheat is not reqire for SA-213 GrdT be mTterials with a =atmm cutsi&
dimtr of 1.5 in. and a mium thicdne of 0.165 in. whe b
It dad usiM a multiass GrW prcess.
(b) for fillet welds used ai sacJWt weldizq fittir-,
ihes the follouiM cat-ditis are t:
(1) a fillet weld throat thickess of 1/2 in. or less, regardless of be metal thi s.
(2) a mxdum specified carban cltent (SA material specificaticn carbon extent, eept when further limited by the Puchaser to a value within the specificaticn limits) of not hre an 0.15%
(3) a minin prheat of 250 F (c) for pipe and tube materials mgtizg the r i
s of (a) (1),
(a) (2), and (a) (3) above ard bavirM either fillet welds attadirg IXTs r
parts to the, proided the fillet weld has a throat thicknes of 2/2 in. or less ard the material is prehated to 250°F lainim; or heat-abacrbing :surfacs and n lon cni std attad to thn, provided the mterial is prte to 250 F ini.
A loer prheatirg t mae y be used, provided spacifically
M!'M!
At
~
7 Pwo 5 of 13 AOAE 53:'cPRTS c1itroll proc1ires ncssary to produc sound joints amed.
&9h prnc>bires shall incluxie but shall nut be limite to the ffollwirq:
(1) mie throat thickness of fillet welds shal be 1/2 in. or less.
(21 7he meiza cotainuos length of fillet welds shall be rut over 4 in.
(3)
Electrodes or filler metal sbhall be dry and shall pmruide a 1-hydzxW weld deposit. CQwrc-mly filler metals shall hae a uAn specified diru ctent of not re than 2.50% and a zaxiun specified carbon content of rnt vre than 0.05%.
(4)
The thickness of the test plate used in makinq the welding prnxeJre qualificticn shall not be less than that of the m
rial to be weled.
(d) for te or presse reaizing hanhle and inspecticr plugs or fitting that are securd :y physical xars (rolirg, s1azlcder
~ntaio, macine threads, etc.) and seal welded, prddi the seal weld has a thmoat thickness of 3/8 in. or less.
(2)
Note (1) dkes not aply to welds usirg the inertia and etiruu drive fricticn welding proesses.
Ptweld heat treatmnt is mardatory for all th i of materials weldd using inertia ard coztintrm drive friction welding.
0
- 4.
1 A
t 7
b 6 of 13 am EMN MMUMre_
4C4 0,
o.
Hinimum Holding Tim at Normal Meiniraz h
for Weld Thidkns material
- Baeldn, F.
u to Over 2 in Over 5 in.
2 in.
to 5 in.
- o.
5 1250 1 hr/in.
1 hr/in.
5 hr. plus Grou No. 1,2 15 min 15 min. for minim=
ea ticl ii ar 5 in.
P-No. 5 1300 1 hr/in.
1 hr/in 5 hr. plus Grcu No. 4 15 min 15 min. for minimamonadiim irdi ver 5 in.
KE:
(1)
Lqept for P-No. 5 Group No. 4, postweld heat treabit is not mandatory for P-o. 5 mterials uner the folltwin c itios:
(a) for cif l wlds in pipe or tl kere the pipe or b cipy with all of the foliowing cxsnditicrs:
(1) a mumt specified d21ium content of 3%
(2) a udu rmdnal axtside diater of 4" (3) a vdim thidous of 5/8" (4) a umdan pecifd cZI content (sA mterial spcification czbi cnitn mq when further aiited by the Pucser to a value within the fic~tialixits) of mnt re than 0.1M (5) a inidn p mt of 3000 F (b) for fillet welds cs2 on sa:et welding fittirns, w the follouirz clitiona are met:
(1) a xwdan speified chromium citent of 3.0%.
(2) a fillet weld thrust thickness of 2/2 in. or less, regardles of base tal thikddne (3) a uaxiin specified carn 1tffAmt (Sh material specifictico ca contet further liited by the Piamer to a va1u within the iimticn limits) of rit -
than 0.15%
(4) a Pinl prehea of 300 F (c) for pipe -arid be aterials meting the r Jirs of (a) (1),
(a) (2), (a) (3), ard (a) (4) abve havi eitr fiet ds attac rI1N re parts to thn, provided the fillet weld has a thrut thicss of 1/2 in. or les ard the mtarial is pr rmted to 300 F
Atta 7
Page 7 of 13
- ~J t.I~
FU5DHE DHET OF PSSM
=
PARM AND 1iflI*OM xirin; or heat-absorbin surfacxs ard nr-lod carryirn stiris attadi to them, prvided the material is preeated to 300 F zinixn.
A lar preheating taerature may be used, providd specifically contzfned proced.res ncssary to proce souxd joints are used.
Suc procedures shall icludre but shall not be limited to the follown:
(1) 7fh naximn throat thickness of fillet welds shall be 1/2 in.
(2) 72e naidmzn cotinuotts lenth of fillet welds shall be not over 4 in.
(3)
Electrodes or filler wtal shall be dry ard shall proide a lwa weld deposit. OCrm-mly filler metals shall have a aximn-specified dimium c ntent of not more than 2.50% ard a max iz specified carbx ccrtent of not mre than 0.05%.
(4) Te thicks of the test plate used in making the weldinr pr ae qalification, shall rit be less than that of the mterial to be welded.
(d) for tibes or pressure retaining hasrrhole ard irspection plugs or fittixgs with a specified maximm chroium c itent of 6% that are secaned by j"ic&l mans (rolling, shoulder cnstrxucio, maczine thretds, etc.) aid seal welded, provided the seal weld has a throat thickness of 3/8 in. or less (2)
Note (1) do i not apply to welds usirg the inertia and c2tinxos drive fricticn weldirg prooesses.
Potweld heat treatmnt is iardatory for all thickness of materials welded usirg inertia and ontirnws drive frictia weldin.
I."
q
- 11. ':
4j4 At~nf 7
PacA8 of 13 AS SMMlN T
- i ; - - ",
.- '4
.I
- : ':i3
.4 1 ::
i--"
t.
Minin.= B~ldirx Time at N4ona Kin~inn
',eature-for Weld Thickness THClding (uinafl Material T~eaq bzze, 0F.
up, to Over 2 in.
Over 5 in.
2 in, to 5i P-Mb. 6 1400 1 hr/in.
lhrWin.
5 hr. plus Gzjp No. 1,2,3 15 min 15 min. for ninimnzawi fltc inch over 5 h NM=3:
II C
(1)
Pcbdd eat trea
- t. is rit rdatory for P-No.6 materials uder the followin oditi r:
(a) for Type 410 mterial where the mterial and cxuitrw-icn shall czPly with the follmin
=iditicrz:
(1) a x2m1 spec' ied cmxn content (sA xterial mecificatim cmzbi witent, excep %ben further limited by the Pmdser to a value within the =ecificttcn liits) of not re than 0.08%
(2) the el a
ed sall pro&m an dtic msiu-nidcl weld dqxxst, or rnraeir-ha1denn nickel-dhrrmumi-irn weld deposit, and provided the follCin aiticroal recpiji-it are mt:
(a) the mterial thides at the wildsd joint does nat w 3/8 in.
(b) for mterial thicd s over 3/8 in. throzVh 1-1/2 in., the follIming aciticml Ca-diticra shall be regaired:
(1) a preheat of 450" F adll be wintained daring welding.
(2) the welded joints shall be fully rdiy
- ine.
(2)
Note (1) des-nt apply to wlds using the inertia and citlu s drive frictian welding pro3ses. Pobeld heat teatm is adnatory for all thidses of iterials weldd using inertia and cxrrtinuos drive fricti w.din.
g i'
- k. :-.'
Pe~9 of 13 ASPE M=IION 2a Minim~u Hkoldir Tina at No Min Txerature fcr Weld TUC*
Holdirq (N
Im Material ME, BratzrI e, "F.
up -to Over 2 in.
OVIS in,
'to S-in.-
P-.7 1350 I hr/in.
l hr/in.
5 hz GraV No. 1, 2 15min.
315 minimin ac r 5in.
Lin. for affliticml t over 5 V
P..
4.
f (1)
Postbmed heat tratet for P-o. 7 material hAll be perforwl, e~gpt that the colirg rate oallI be a aximim of 100 F/hr in the r&rqs above 12000 F afterwhich the cxoliln rate safl be sufficienly rapid to preva*
titlnt.
(2)
Potbad heat tne 3nt, is rX* kntatoiy for P-o.7 Mterials Uiler the folling conditions:
(a) for Type 405 mterial *here the material and ctwtruyu shall cxly with the fonowim cmxditi=:
(1) a madnM specified cari= content (SA uterial mecifiction car ontaet, ext vt= further limited by tha Pirdtwer to a value within the speciication) of not e than 0.08O (2) the elect miued ahall prmdwe an amtadtic dir, Ln-uiddal wid depwit, or a ncir4=SeniM nicke1-drcoim-irudn wed dwogit, ad provid the fohlliM aitimal re i1ts ae Si:
(a) the iterial thikess at the welded joint dows nt e:w 3/8 in.
i (b) for material thUidmw over 3/8 in. thza4h 1-3/2 in., the fol aim I.ti a
r ts are mt:
(1) a Prduat of 4500 F shall be nintaind durlrq velding (2) the wlded joints shall be fully or atiC&Uy
- 4., "
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'C
-1 Ptpe 10 of 13 AS E ErICt I MRU WURMMST Tq%
_EPSM 0
=AM_9
_Z
,i Minim= Holdirg Time at Normal Miniu rat for Weld Thickzmss odi(Ncinal Material Tlerature, F.
up to Over 2 in.
Over 5 in.
2 in.
to 5 in.
P-No. 8, 31
?~e None Noxe Ncne or 45 W :
I 1 (1)
Postweld heat treate is neither reqired ror pzdiibited for joints betim austenitic stainless stees of the P-o. 8 grcup,
-Mo.
31 group or P-No. 45 grp.
Minimni Hkoldig Tim at Hml, Minin mure for Weld Thickns Hoding In l
Material T
- ratune, F.
up to Oer. 2 in.
Over 5 in.
2 in.
to 5 in.
P-so. 9A 1100 1 br/in.
1 hr/in.
5 hr. plus Grup No. 1 15 min 15 min. for ird: ov 5 in.
(1) m1 it is iqractical to FUP at the t rature rante specified, it is permissible to perform the F!W of this mnterial at lowr tt U-';'
(10000 F iniuu) for l1n periods of tiie in ardance with the alternate table at the erd of this attt.
- 9 (2)
Postweld beat treatmnt is not madatory for P41.
9A materials urxr the follawn cdticas:
(a) for ciraferenti8 welds in pipe or la here the pipe or.'
oop3ly with all of the follaing ca itia:
(1) a mxinz rminal utsIice diameter of 4 in.
(2) a dxthickns of 1/2 in.
_OXAttachnt7 U WCP-8 Page 1-1 of 13
_ wA A
SEC 1ON I
M YA PCUM.)RE M FUR PONEI) HEAT -E,_.Dn 3F E
rE PARIS AND AA CMS a maxLw specifed carbon content (SA material specification czrbon =rxent, exIet when further limited by the Pu+/-aser to a value with-1 the specification liotits) of not more than 0.15%.
f; for fillet welds used on socket welding fittings, when the following conditions are met:
31, a fillet weld throat thickness of 1/2 in. or less, regardless of base metal thickness
- ) a mayi'tmi specified carbon content (SA material specification carbon content, except When further limited by the Purchaser to a value within the specification limits) of not more than 0. 15%.
, 2) a dni.mmi preheat of 2500F when the thickness of a pressure part at the weld exeeds 1:2 in.
f-for pipe or tab materials Metirng the reuiremnts of (a) (1), (a) (2),
and Thai (3),abc:e having attachments fillet welded to them, provided:
- 1) the fillet welds Wave a throat thickness of !/2 in. or less.
t) hte :aterial is preheated to 250' F minimum.
A lower preheatirn terxp ture may be ussidprovided specifically cntrolled procedures necessary to produce sound'welde joints are use.
0 Such procedures shall include but shall not be li.ited to the folI aL-13:
(a) the throat thicjness of fillet welds shall be 1/2 in or less.
(b) the raxmint continuous length of fillet welds shall be not over 4 r..
(c) the thicimess of the test plate used in making the welding proure qualification of Section IX, shall not be less than that of the material to be welded.
!di for tubes or pressure retaining handhole ard inspection plugs or fittings that are secured by physical reans (rolling,shoulder corstruction, madcine threads, etc.) and seal welded, provided the seal weld has a throat thickness 3/8 in or less.
Lftrt
-I At+/-tachmnt 7 8
Pt 12 of 13 9E PESSUE! PASrt AN Minia Holding Time at Narnal Miniudn Tperabzre for Weld 7hidas Holding I
Material
- Teurpe,
°F.
Up to Over 2 in.
over 5 in.
2in.
to5 in.
P-No. 9B 1100 1 hr/in.
1 hr/in.
S hr. plus Grcq? o. 1 15 min 153 min. for einiun additinm i
ove 5 in.
- Th
(1) 4Wh it is ical to MU at the taqerture rarne speified, it is i
ible to perform the A of this mnterial at lwr teqperaturi (30oO' F wd= ) for lag periods of time in acrdar with the alternate table at the end of this attacent.
(2)
For postweld heat treamnt of P-M. 9B mterials, the holding te ture shall not exeed 1175 F.
(3)
Posbld heat treatmnt of P-o.
9B materials is not mamlatory for terials up to ard ia-ludirg 5/8 in. in thicknes, providirq a welding pme zlification has been ae in equal or greater thic s t Pwed.
Minimm Holding Tin at Nmm1 Minimum CIet for Weld Thidck s
Holdin fl Inf Material Teraure, "F.
up to o
2 in.
Over 5 in.
2 in, to 5 in.
P-No. lOE 1250 1 hr/in.
1 hr/in.
1 hr/in.
Grow No. 1 15 min.
2mi:
NUMt:
(1)
Postweld heat treatment for P-No. lOE(SA-268 7446 material xlly) sallI be perfor
, ex:et that the cooling rate shall be a maxima of 1000 F/hr abme 1200' F after wich the cooling rate shall be sufficienty rapid to prevent ebrttlcirt.
0
-r
.Mh~
WCP-8 Page 13 of 13 ASME SECTION I MAiMAJORY PMX PDEM-FR FSTEID Hr
.O.F PRESaR PARS AND A!ITAC.. ENI A
RATE PCIWE:ID HEAT AE21 T PBJIREMS FOR CARBON AND LW AULDY SIRS (Applicable only when permittxd in the preceding tables) scrose ir. Tperture Minimum Holding Time Below %inimm Specifie at Decreased Terperature, T.erature, F hr/ in. of thickness Notes t)4 0
(1) 230 20 (1)
Hese '
r Fitweld heat treatmient temperatures permitted only for P-No.
-are ^ materials.
Att*Chmnql wc.3 I~
Peg. I of C:
n I
N#JMATO? ftEWJUVENTS FM PSTWELD NEAT TICEATNE11? OF WELDS' Minla. 3Sotdirc Ile at 1amprstumw s-iN..
NMo ding For Weld Thic nes (Iminal)
Temprature tw
,
- F2 Ovear lZ in.
- Mr z in.
112 Inof ess
-to 2 n, to5 in, Op'r 5in.-
2 hr. plus 2 Hkr. plus 1S mlin each 15 mlin each 1, 3 11O0-1250 30 mlin.
1 hr./in.
.Ml:Ianwl awiStionst inch over 20 Inch over 20 5 hr. plus 15 mlin eech
¶100-250 30 mlin.
I hr./in.
I hr./in.
aMltilnat inch over So 5,'
S hr. plus' except 15 mlin each Ce. 4 1250-1400 30 mlin.
¶ hr./in.
I hr./in.
lch vef 3'1 6
S hr. plus IS mlin seoc 7
13001400 30 slin.
I hr./in.
1 hr./in:
ea iitIiinal Inch Over 56 VA Ge. 1 1100-1250 5 hr. pLus
_30 mlin.
I hr./uin.
I hr./in.
`¶5 mini oech awItional go Gr. 1 1100-1175 inch ever SI lOP Gi.1 1100-1250 5 hr. plus
_15 m lin se ek 30 min.
I hr./fn.
¶ hr./hn.
awitional 101 cr.1 1300-1400 Inch over IIA Gr.4 100-1050 30 mlin.
I hr./in.
I hr./in.
I hr./in.
P-ses. B.34,42,43,45 ard hed varfacine an P*u.. I bese wota Wone PAT neither reqwired nor prohibited.
I srt co ba c a'ta't I1a not owe, ttWn 0.3=
10M.,:
4
- 1) tawiiong to the asrdsory re~jrmmnta of this Attecheant are def Ined In Attacd'mii 9".
- 2)
Allt twqM turve awe inrte twrat aues.
ft Attachkm 4 a Pag 2 of, 2
. i
.,..: - p 0
a_
lr}
SK Sectionj t AL1E3ATIVE NOLDI*G rEWEIATMES AO TrUES A.
Alternative clinicm Alterrotive Minim material Molding Molding TIme P-MO.
lweratures (F) cuote (1)
- 1. 3, 9A Gr.1*
1050 2 hr/in. thick 95 Cr. ¶ 1,3, 9A Gr.1 1000 fl hr/in. thick 95 Cr. 2 NIOTE:
CI)
All other requirsmnts for tim wr tersture shall apply.
W*4 3 of 4 q.a 4.
ASME 99=c~ III EXMICS70M
=PW
-1O.
0 max.
Reoted min.
Nominal
- Carbon, Prehat P-No.
TUe of Weld ajote 5)
Thic)Mms (Note 6)
I'd e F 1 Vesaels Cixmuferential bft ani socket 1-1/4 in.
0.30 Weids Iting pipe a.t,
& less or less to nozzls vtwee the mterials being joited are 1-1/2 in. an over 1-1/4 0.30 200 ls in. to 1-2/2 or less in.
3/4 in. or over 0.30 less Over 3/4 in.
over 0.30 200 to 1-2/2 in.
Firet Welds 3/4 in.
- Pt reir welds 5/8 in. or 0.25 cr 200 an fillt welds, providd le less welding promreqaiictz is mde buing equal or greater thidcrxs bhe material than the d
~
OMhr Al. welds %here the mterials 1-2/4 in.
0.30 cr pcxwnts being joired are 1-2/2 in. ard arCM f lam Over 1-1/4 0.30 or 200 in. to 1-1/2 les in.
3/4 in. cc oor 0.30 le Oyr 3/4 in.
oww 0.30 200 to 1-/2 i.
All welds in txial ovr 3/4 in. cr 200 1-1/2 in.
1_
7.,'
-C 4
- A'
- 1'
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