Template for comments and secretariat observations
Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
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FR
3.1.14
te
3rd bullet
point
Is the intention to distinguish CRAs from Stainless
Steels?
Clarify if CRAs have less than 50% iron; example :
Ni based alloys.
It can be inferred from other sections such as 6.4.3 and
6.4.5 that stainless steels are also CRAs.
Otherwise mention as examples that austenitic
stainless steels (eg 316L) and Duplex stainless
steel are also considered as CRAs in this
standard.
te
Why specifically mention glass reinforced plastics ?
Use a more general term for these type of
materials non subject to corrosion : non-metallic
composites.
FR
6.3.4
FR
6.3.4
te
Cathodic protection standards mentioned are DNV RPB401 and NACE RP0176
Mention also ISO 15589-2
US
Entire
document
Tech
nical
The US requests that these comments be fully
considered as DIS comments – reviewed and resolved
prior to the issuance of the first DIS ballot, with
resolutions noted in an included comment register;
As needed to resolve comments.
US
Entire
document
Tech
nical
The material contained in this ballot should be compared
and aligned to the content of proposed API 17P / ISO
13628-15. It should be noted that overlapping material
will be withdrawn on the publication of 17P/-15;
Align documents and add Introduction note “Upon
publication of API 17P / ISO 13628-15, the
requirements/ recommendations in (pertinent
clauses) for (pertinent products) in this
International Standards 13628-1 will be
superseded.”
US
6.4.2.2 Table
4
Tech
nical
Verify the that temperature ranges for the materials are
correct or not. In the past edition of this document
(1999), the temp ranges for bolt material were "Above
100 (212)", "Above 46 (115)" and "-196 to +60 (-320 to
+140). The new ranges all start with large negative
temps (-46, -100, -196) that are very different than the
previous edition. Note that a similar problem appears to
exist with the current ediiton Table 1 for bolting material.
-46 should be 46; -100 should be 100; 65mm
might be 50mm (but regardless, the correct USC
unit dimensions should be given). A temporary
corrigenda may need to be issued to correct Table
1 in the current published edition until this new
Table 4 replaces it.
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page 1 of 29
ISO electronic balloting commenting template/version 2001-10
Template for comments and secretariat observations
Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
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Also, in the 1999 edition, size range for L7 material was
50 mm, and is 65 now and in the current published
edition, 65 mm (1.969 in) is listed. Which is correct?
US
Entire
Document
Tech
nical
TC67/SC4/WG6 documents are jointly developed with
API SC17 and have both SI and USC units used in the
text and tables, inlcuding the current edition of ISO
13628-1/API RP 17A. Some USC units are given in
parentheses in the amendatory material, but in many
places in new Clause 6 and Annex L, the USC units are
missing (i.e. 6.2.2.2, 6.3.2, 6.3.4, Table 2, Table 4, 6.5.1,
and all of Annex L).
Add the USC units in parantheses after the SI
units in all text and tables to match the remainder
of the document and the common practices of
users in all parts of the world.
US
L.6.1.13
Tech
nical
Clause L.6.1.13, last sentence, "In no case shall the
PWHT temperature exceed the tempering temperatures
of the base materials." This is unacceptable for
martensitic stainless steels such as AISO 410; for such
material it is necessary to exceed the tempering
temperature in order to obtain proper stress relief.
Revise to read:
"For carbon and low alloy steels, the PWHT
temperature shall not exceed the tempering
temperatures of the base materials."
US
L.2.2
Edito
rial
In the last sentence of the 2nd paragraph, "All fittings
shall be delivered in normalised, normalised and
tempered..." the use of the word "delivered" could create
disagreements as to when in the production process the
material must be heat treated.
Revise to read, "All fitting shall be used in
normalised, normalised and tempered..."
US
L.6.1.5.1
Tech
nical
Fifth paragraph, "Socket welds shall not be used at
pressure containing piping," is unnecessarily restrictive.
There are acceptable uses of welds which could be
considered socket welds, and this sentence would
increase design complexity without value. An example is
for a small injection line penetration into a thick-wall pipe
where a termination fitting would be sealed at the pipe
OD with a socket weld.
Revise to read, "Socket welds shall not be used at
pressure containing piping, except by agreement."
US
Clause 3,
Terms and
definitions
Edito
rial
The definition proposed for "corrosion resistant alloys
(CRAs)" is the same as in ISO 15156, but different than is
used in ISO 10423. Also, throughout the proposed Annex
L, the term "steel" is used where it is intended to refer to
(a) Replace definition for CRAs with definition from
ISO 10423, (b) add definition for "stainless steel"
from ISO 10423, and insert "stainless steels"
throught Annex L and clause 6 where needed for
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
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carbon steel, alloy steel, and stainless steel. ISO 136281 will be used primarily by systems design engineers, not
metallurgists, and it would be much clearer to use the
10423 definition for CRAs and to use the term "carbon,
alloy, and stainless steels," where that is what is
intended. Non-metallurgist users of the document would
typically not think of "steels" as including stainless steels,
and would typically prefer to differentiate stainless steels
from other, more corrosion-resistant CRAs.
clarification.
US
6.4
Other
Table 3 — Materials selection for subsea systems —
Weld overlay materials
Table 3 — Materials selection for subsea systems
US
Table 3
Edito
rial
Sub-sea
Subsea
US
6.4.5
Edito
rial
Sub-sea
Subsea
US
L.2.2
Paragraph 3
Tech
nical
For welded pipe and fittings, PQR/WPQR shall be
qualified in accordance with DNV OS F101 Eliminate
reference to ASME IX and ISO 15614-1. These
documents are not designed to specifically address
submarine pipeline design as the DNV code is. These
documents are inadequate to address requirements for
subsea applications.
For welded pipe and fittings, PQR/WPQR shall be
qualified in accordance with DNV OS F101
US
L.2.2
Paragraph 3
Tech
nical
Add DNV code to last sentence for welder qualifications.
All welding shall be carried out by welders
qualified in accordance with ISO 9606, ASME IX,
DNV OS F101 or EN 287
US
Paragraph
L.2.4 Second
bullet
Tech
nical
The PWHT temperature and the tempering temperature
should be a minimum of 30 degrees centigrade difference
The tempering temperature shall be at least 30
degrees centigrade higher than the PWHT
temperature.
US
L.2.6.6.1,
Paragraph 3
Tech
nical
Prior to corrosion testing the specimen shall not be
pickled. The testing should be carried out in the exact
condition that it will be placed in service. More times than
not the material goes into service not pickled.
Eliminate the last sentence of the third paragraph.
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
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US
L.4.3.1,
Paragraph 3
Tech
nical
All bends for duplex stainless steel shall be solution
annealed after bending. Numerous material problems
have been identified with induction bending duplex
stainless steel without solution anneal after bending.
Add sentence: Duplex stainless steel shall be
solution annealed after induction bending.
US
L.4.3.3,
Paragraph 5
Tech
nical
The number of test locations shall not be reduced for any
reason. Mechanical properties at all locations need to be
verified no matter how closely the process is controlled.
Eliminate paragraph 5
US
L.6.1.1,
Paragraph 1
Tech
nical
Replace codes referenced with DNV OS F101. Eliminate
reference to ASME IX and ISO 15614-1 and ISO 156145. These documents are not designed to specifically
address submarine pipeline design as the DNV code is.
These documents are inadequate to address
requirements for subsea applications.
…shall be qualified according to DNV OS F101
and to this standard.
US
L.6.1.3.1,
Paragraph 1
Tech
nical
Replace codes referenced with DNV OS F101. Eliminate
reference to ASME IX and ISO 15614. These documents
are not designed to specifically address submarine
pipeline design as the DNV code is. These documents
are inadequate to address requirements for subsea
applications.
Mechanical testing shall be performed as specified
in DNV OS F101 and the additional requirements
in this standard.
US
L.6.1.3.5,
Paragraph 2
Tech
nical
Maximum of 1% of intermetallics shall be acceptable for
accepting a WPQR based on corrosion and impact
testing alone. The specimens used for corrosion and
impact testing may be selectively sampled in an attempt
to provide areas that have less intermetallics
In case of excessive amounts of intermetallics
phases of limit stated above, up to a maximum of
1%,
US
L.6.1.3.5, L.8
Tech
nical
Acceptance criteria for Type 22Cr and 25 Cr shall be 48 J
in lieu of 27 J.
Change 27 J to 48 J.
US
L.6.1.4.1,
Paragraph 1
Tech
nical
Remove all standards references and replace with DNV
OS F101. . Eliminate reference to ASME IX and ISO
15614. These documents are not designed to specifically
address submarine pipeline design as the DNV code is.
These documents are inadequate to address
requirements for subsea applications.
…essential variables listed in DNV OS F101 and
the additional essential variables …
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
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US
L.6.1.4.3,
Paragraph 1
Tech
nical
Reduce the allowable heat input range to + 10 %. 15% is
excessive on heat input to control intermetallic phases
consistently.
…heat input shal be + 10 %.
US
L.6.1.7.2,
Paragraph 1
Tech
nical
10 ml shall be changed to 8 ml to be consistent with the
AWS designation of H8
…consumables (HDM 8 ml/100g weld metal or
AWS H8) or solid…
US
L.6.1.12,
Paragraph 2
Other
There is no table 1 in this text. Need to indicate the
correct reference.
US
L.6.1.13,
Paragraph 4
Tech
nical
PWHT temperature shall be at least 30 degrees
centigrade lower than the tempering temperature of the
material. This ensures adequate mechanical properties
maintained in the base materials.
The PWHT temperature shall be at least 30
degrees centigrade lower than the tempering
temperature of the base materials.
US
6.2.3
Other
Recommends adhering to ISO 15156 to minimize
likelihood of CP, however this criteria is not commonly
used for this purpose.
Recommend following the criteria of DnV RP B401
section 5.5.
US
6.2.3
Other
Requires that DNV RP F112 be satisfied to protect
Duplex SS with CP. This is only a draft document that
has not been accepted. Recommend following the
guidelines in DnV RP B401 and NORSOK.
Recommend following the guidelines in DnV RP
B401 and NORSOK.
Edito
rial
For 13628-1. The highlighted in yellow text (editorial)
changes to address one or more of the following
concerns:
See below comments.
US
1.
CRA’s and CRM’s need to be defined the
same as what is defined in 13628-4.
2.
Several “shalls” are reverted to “shoulds”
since these address recommended practice rather than
mandated specification
3.
Imperial units added to augment SI units
4.
Concerns over the statement that certain
stainless steels cannot be used in sea water above 20
degrees C. We think this should be over 40 degrees C.
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US
3.2
Edito
rial
Missing some abbreviations used in the document; add to
the list in 3.2. Perform a spell check on entire document
to find all abbreviations.
Add:
CGB completion guide base
GLL guidelineless
QTC quality test coupon
SCM subsea control module
US
7.10.2.1.2
Edito
rial
Add to Table 16 Section B (Actuator) new #12 Type of
control fluid (oil or water based)
Table 16, Section B, add
12 Type of Control Fluid (oil or water base)
US
12.5.3
Edito
rial
Additional information about the SCSSV would be helpful
in the design of the control system and planning operating
philosophy / procedures for producing the well.
In section h) Downhole interface for the SCSSV
add three items in the Description column: "Swept
Volume:" and "Total Vertical Set Depth:" and
"Open / Close Gauge Pressures of SCSSV"
US
12.5.3
Edito
rial
Section h) and section n) are both labeled "Downhole
interface." Combine these sections. Also, it would be
helpful to list the data about the DHPT card interface to
SCM.
Add to n)Downhole interface:
DHPT card interface to SCM - Specify:
Combine sections h) and n)
US
ISO 13628-1
Amedment 2
ANNEX L
Table L.4
Tech
nical
Nominal wall thickness should be properly defined in Tab
L.4, even for parts in which the wall thikness varies.
Replace "Nominal wall/weld thickness" with
"Maximum wall/weld thickness"
US
Clause 6/
ed
The current draft contains only metric units, while, like it
or not, the oil and gas industry still utilizes imperial units
worldwide.
All metric units shall be followed by the imperial
equivalent. For example 20o C (68o F).
US
Clause 6/
ge
The material selection principles in ISO 13628
Amendment 1 clause 6 need to be consistent with ISO
13628-4.
Add the following text as a new Para. 1:
Material selection is the ultimate responsibility of
the user as he has the knowledge of the
production environment as well as control over the
injected treatment chemicals. The user may
specify the service conditions and injection
chemicals asking the supplier to recommend
6.1
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Date: 2007-02-07
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materials for his review and approval.
US
Clause 6/
Table 1
ge
6.1
This table should be deleted. It doesn’t provide any real
fixed requirement, and will just lead to a lot of requests for
revision of the document in the future as equipment
manufacturers and metal manufacturers want to have the
alloys they use / make listed in the table.
Delete Table 1.
When requests to add a new alloy to this table are
submitted, what are the guidelines the committee will
follow in determining what should be added and what
shouldn’t?
US
Clause 6/
Table 1
ed
Column 2 contains a number of trademarked names.
Use of trademarked names can lead to restraint of trade
lawsuits against ISO.
Delete the trade names (Nitronic, Custom, Monel,
Elgiloy, Tungum), or delete column 2 altogether.
Table 1
ed
UNS N07716 is not Custom 625. It is Custom 625 Plus.
However, “Custom” is a trademark name.
Revise to read Alloy 625 Plus.
Table 1
te
CA6NM composition is not correct.
If Table 1 was still kept, all alloy composition need
to be checked to be correct and only UNS alloy
designation to be listed in the table.
te
The existing list does not contain a reference to elemental
sulphur, and elemental sulphur can lead to environmental
cracking.
Add to the defined list:
“The presence of free sulphur.”
ed
The term “industry best practice corrosion modelling” is
not acceptable. This term is wide open for debate and
interpretation, and could lead to significant problems if
that debate were to take place in a court of law.
Revise to read:
Furthermore, not all end users consider themselves
knowledgeable enough to specify a corrosion model.
Thus, it is not always the end user that selects the
corrosion model.
Please note this revised paragraph deletes the
sentence:
The term “industry best practice” is not acceptable. This
term is wide open for debate, and could lead to significant
Revise to read:
6.1
US
Clause 6/
6.1
US
Clause 6/
6.1
US
Clause 6/
6.2.2.1
US
Clause 6/
PARA. 2
6.2.2.1
US
Clause 6/
PARA. 6
ed
“The potential for corrosion shall be evaluated
using corrosion modelling or corrosion testing.”
“The model to be used shall be specified by the
end user.”
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6.2.2.1
US
Clause 6/
PARA. 2
te
6.2.3
US
Clause 6/
Clause 6/
Clause 6/
Clause 6/
Clause 6/
PARA. 6
te
Duplex stainless steel if left uncoated may be subject to
hydrogen embrittlement.
The last sentence replace with:
Coating of tubing with outer diameter less than
25mm (1”) is not required except when duplex
stainless materials are used.
PARA. 1
te
The use of the term “All” is in conflict with the exemption
that follows.
Delete “All” in the first sentence.
Table 3
ed
The term “13Cr4Ni” is not a standard alloy designation.
What is this alloy? Does it have a UNS number? Does it
have a common name? If this is F6NM, call it F6NM or
use the UNS number.
Replace “3Cr4Ni” with “UNS S41500”.
Table 3
te
The title is incorrect for what the table covers.
Revise to read:
“Table 3 – Materials selection for subsea systems”
6.4.1
US
Clause 6/
“The requirement of DNV RP F-112 for duplex
stainless steels, when released, shall be satisfied.”
“The standard minimum overlay thickness shall be
3mm. Either higher or lower minimum overlay
thicknesses may be specified, if acceptable to both
the manufacturer and the end user. For Nickel
base alloy UNS N06625 (AWS ERNicrMo3), the
chemical composition shall meet either Class Fe5
or Class Fe10 as specified in ISO 10423. The
manufacturer and/or end user shall select the
appropriate class.
6.4.1
US
Revise the last sentence to read,
The grammar is not good and does not represent
commercial practice.
6.3.4
US
DNV RP F-112 is, we believe, still in a draft stage, it may
be inappropriate here.
te
6.3.4
US
“The evaluation shall be based on erosion
modelling.”
PARA. 2
6.3.2
US
problems if that debate were to take place in a court of
law.
Table 3
ed
The paragraph reference is incorrect.
6.4.1
Footnote b should read
“Oxygen equivalent in compliance with 6.2.2.2 or
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lower.”
US
Clause 6/
PARA. 10
ed
6.4.2.1
US
Clause 6/
PARA. 1
te
This paragraph is not clear as to what needs to do the
spot hardness check. The bolt manufacturer? The
distributor? The equipment manufacturer? or the end
user?
Clause 6/
PARA. 6
te
Revise to read:
Suitable coatings of the electrolytic plating category may
include other materials such as Zn-Ni or Zn-Co.
Revise to read:
Cadmium plating is an excellent sacrificial coating that
can be legally used in many countries and geographic
locations around the world. There is no reason to add a
prohibition to cadmium plating to this international
standard just because some nations have banned
cadmium plating. This is an international standard, not a
North Sea standard!
Delete paragraph 9.
The wording is not good, and sounds more like a helpful
hint rather than a specification.
Revise the first sentence to read:
6.4.2.1
US
Clause 6/
PARA. 9
te
6.4.2.1
US
Clause 6/
PARA. 1
ed
6.4.3
US
Clause 6/
Also, revise to use a more descriptive term other
than “spot hardness testing”.
The use of the term “Type A4” is open to discussion and
debate.
6.4.2.1
US
Revise to clarify which party must do the testing.
“…Type of any strength grade…”
“Post-baking of parts after electrolytic plating is not
required provided the hardness of the fasteners is
as specified in table 4”
Add cadmium to the list of possible coatings.
"Gasket materials for subsea hydrocarbon service
may be manufactured from Type 316 stainless
steel, Alloy 825 or Alloy 625. Selection of the
gasket material should address the desired level of
corrosion resistance, as well as any environmental
limits imposed by other standards such as NACE
MR0175 / ISO 15156, if applicable."
PARA. 2
ed
This paragraph reads, “Material for gaskets in ASME ring
type joints…..”. Was this intended to read, “Material for
Revise to read as follows if the intent is to say API
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te = technical
ed = editorial
NOTE
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1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
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6.4.3
US
Clause 6/
PARA. 2
ge
6.4.4
US
Clause 6/
PARA. 3
te
6.4.4
US
US
rather than ASME.
The term “independently verified” should be deleted.
“Independently verified” tests are not required for metallic
materials. Furthermore, the term is not defined to show
independent of whom?
Revise the second sentence to read,
Documentation for the relevant materials from suppliers
refers to the NORSOK M710. In the real world, suppliers
are not willing to pay the extra cost for the extensive
NORSOK tests. Additionally, the long lead time required
for testing and supply of parts in accordance with the
NORSOK requirements has prevented widespread
acceptance of these onerous requirements.
Revise to read as follows:
“Material for gaskets in API ring type joints……”
“The documentation shall include results from
relevant tests, and confirmed successful
experience in design, operational and
environmental situation.”
“For these components, documentation for the
relevant materials from all suppliers used shall be
provided in accordance with the documentation
requirements of a recognized standards
organization (for example, ISO, API, NACE, or
NORSOK).”
PARA. 11
te
Copper based alloys are not referenced, but they are
subject to cracking when exposed to mercury.
Add
Copper based alloys shall not be exposed to
mercury or mercury based compounds.
Clause 6/
PARA. 1,
te
6.5.1
The SMYS limit does not reflect long term actual practices
in the oil and gas industry, and needs to be raised.
Subsea wellheads and other components have been
specified and manufactured with materials with a SMYS
of 85 KSI (586 MPa) for decades, with no adverse affects.
85 KSI (586 MPa) is a norm, not an exception.
Revise to read:
2nd
Clause 6/
PARA. 1,
Revise bullet 3 to read as follows:
6.5.1
3rd bullet
It is widely known that the way to minimize the risk of
environmentally assisted cracking of cathodically
protected carbon and low alloy steels exposed to sea
water is to limit the hardness of the material. The SMYS
is not the problem. The maximum hardness is.
Clause 6/
6.5.1
US
gaskets in API ring type joints……”? If so, it should be
revised.
bullet
te
Published literature indicates that the recommended limit
for cathodically protected carbon and low alloy steels
exposed to sea water is 34 HRC maximum. 34 HRC
“The SMYS of carbon and low alloy steels
intended for welding shall not exceed 586 MPa (85
KSI). A higher ……”
“The hardness of carbon and low alloy steels
exposed to sea water, but not cathodically
protected, is 35 HRC maximum or 345 Vickers
maximum or 327 Brinell maximum.
The hardness of carbon and low alloy steels
exposed to sea water and cathodically protected is
34 HRC maximum or 336 Vickers maximum or
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
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te = technical
ed = editorial
NOTE
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1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
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Proposed change by the MB
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converts to 336 Vickers and 319 Brinell per ASTM E140.
319 Brinell maximum.”
Additionally, published literature indicates that the
recommended limit for carbon and low alloy steels
exposed to sea water but not cathodically protected is 35
HRC maximum. 35 HRC converts to 345 Vickers and
327 Brinell.
Delete bullet 4.
This international standard should not impose limits on
minimum strength since that is not the problem, but
instead impose limits on the maximum hardness.
US
Clause 6/
Table 5
te
Is “Ln” natural log? Please specify.
US
Clause 6/
Table 5
te
Published literature indicates that the recommended limit
for cathodically protected carbon and low alloy steels
exposed to sea water is 34 HRC maximum. 34 HRC
converts to 336 Vickers and 319 Brinell per ASTM E140
Define the characters used in the formula.
Revise the maximum hardness values for carbon
and low alloy steels to read as follows:
“34 HRC (336 HV) (319 HB)”
Also, delete the reference to footnote a.
US
Clause 6/
Table 4
te
Published literature indicates that the recommended limit
for cathodically protected carbon and low alloy steels
exposed to sea water is 34 HRC maximum. 34 HRC
converts to 336 Vickers and 319 Brinell per ASTM E140
Revise column 5 and Replace the Maximum
hardness value of “35 HRC” with “34 HRC”.
US
Clause 6/
Table 4
te
The title of the table is not clearly worded.
Revise to read:
“Table 4 – Bolting materials for pressure
equipment”.
US
Annex L/
ed
The current draft contains only metric units, while, like it
or not, the oil and gas industry still utilizes imperial units
worldwide.
All metric units shall be followed by the imperial
equivalent. For example 414 MPa (60 KSI)
US
Annex L/
te
SMYS is described in this draft as “specified minimum
yield stress”, when the correct description is actually
“specified minimum yield strength”.
Revise to read:
3.2
(abbreviated
SMYS specified minimum yield strength
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
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1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
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terms)
US
te
Annex L/
Clause 2
The following statements refers to ASME documents that
are not included in the Page 1, Clause 2, normative
references:
Add ASME B31.8 and ASME B31.3 to the list of
reference standards.
The defect acceptance level shall be in accordance with
ASME B31.3, Chapter VI, Normal Fluid Service, and
Chapter IX, High Pressure Service, for pipe classes with
rating above class 2500, unless more severe
requirements is specified by the designer.
ASME B31.8 GAS TRANSMISSION AND
DISTRIBUTION PIPING SYSTEMS
US
Annex L/
PARA. 3
ed
Is there not an error in the second sentence at the
reference to B31.3 (first sentence refers to B31.8)
Revise ASME B31.3 to B31.8
PARA. 1
ed
The term “low alloy steel” was inadvertently left out of this
paragraph.
Revise to read:
L. 1
US
Annex L/
L.2.4
US
Annex L/
L.2.4
US
Annex L/
L.2.4
The material shall have a weldability suitable for all
stages of component manufacture, fabrication, and
installation. The following requirements shall
apply to carbon steel, low alloy steel, and stainless
steel grades:
PARA. 1,
bullet 1
ed
The appropriate term is “sulphur”, not “sulphurous”.
Revise “sulphurous” to “sulphur”.
PARA. 1,
bullet 1,
table
te
One of the standard maximum sulphur limits used for
steels manufactured and stocked worldwide is 0.025 %.
The way the table currently reads (S < 0,025%), the
sulphur maximum is 0.024%. This will unnecessary limit
Revise any sulphur maximum in the table listed as
“S < 0.025%” to read “S </= 0.025%”.
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
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te = technical
ed = editorial
NOTE
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1
2
(3)
4
5
(6)
(7)
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Clause No./
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Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
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the use of many heats of steel at a time when steel is in
very short supply.
US
Annex L/
L. 2.4
US
Annex L/
PARA. 1,
Bullet 2
te
PARA. 2
PARA. 4
L.2.4
US
Annex L/
For carbon and low alloy steels, material from stock must
frequently be purchased. Thus, the equipment
manufacturer does not always get to specify the
tempering temperature.
Add the following wording to the end of the bullet.
ed /
te
There is a reference to the maximum hardness values in
ISO 13628-1 Amendment 1, Clause 6, Table 2, but Table
2 is for paint systems.
A reference to the correct table will need to be
provided before we can determine if this is
technically acceptable. (Table L.5)
te
There is a term used in this paragraph that is neither a
widely used term nor a term defined in the spec. That
term is “same quality heat treatment load”.
Revise to read:
The current heading references forgings, but the
paragraphs that follow include requirements for forgings
and HIPed components.
Revise to read:
How can the heaviest section from a prolongation be
guaranteed when the thickest section may be in the
middle of a forging?
Add another bullet:
The 1st paragraph is in conflict with the 3rd paragraph of
L.2.5.1. By not saying “same size”, it weakens the
requirements and by adding the 6000 kg requirement, it
adds a useless requirement with no real technical
justification.
Rewrite to read:
L.2.5.1
US
Section
Heading
ed
Annex L/
Para, 3,
te
L. 2.5.2
Bullet 2
Annex L/
PARA. 1
Annex L/
L.2.5.2
US
US
te
L.2.5.2
US
Annex L/
ed
Annex L/
L.2.5.2
“same heat treatment lot”.
“Test sampling of forgings and hot isostatically
pressed components”
“At a cross section thickness representing the area
of the part with maximum stresses.”
“A test lot is defined as components of the same
type manufactured according to the same
manufacturing and heat treatment lot.”
PARA. 4
te
If separate test bars at to be allowed, then they should be
restricted in accordance with the type of requirements
specified by ISO 10423 for QTC’s.
Revise to include the ISO 10423 requirements for
QTC’s as applicable.
PARA. 6
ed
This paragraph references forgings, but the requirement
needs to reference HIP components since the paragraph
immediately above this one specifies integral test blocks
Revise to read:
L.2.5.2
US
“Alternatively the base material may be tested in
the simulated PWHT condition”
“Integral test samples shall not be parted from the
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te = technical
ed = editorial
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1
2
(3)
4
5
(6)
(7)
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Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
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Comment (justification for change) by the MB
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for HIP components.
HIP component until after all heat treatment is
completed.”
Also, make this part of the 5th paragraph, rather
than a stand alone paragraph.
US
Annex L/
PARA. 1 and
L. 2.6.3
Table L.5
te
Age hardened Nickel base alloys also need to be tested.
Replace with
All products in ferritic, ferritic-austenitic, martensitic
steel and precipitation hardened nickel alloy shall
be impact tested per test lot for products with wall
thickness 6,0 mm or greater.
Revise Table L.5 to add the alloy 718 values from
API Spec 6A 718.
US
Annex L/
Table L.5
te
The orientation of the test specimens is not defined.
L. 2.6.3
Add a Footnote to Table L.5 that states:
“Testing in only one orientation is required for
acceptance.
US
Annex L/
PARA. 1
te
L.2.6.3
US
Annex L/
Table L.5
ed
L.2.6.3
US
Annex L/
Title
ed
L.2.6.5
US
Annex L/
PARA. 2
ed
The 5th sentence does not make sense. Components
have many surfaces.
Delete the 5th sentence.
The table references “carbon steels”, but does not
reference “low alloy steels”.
Revise rows 2 and 3 to read:
The title says “Micrographic examination”, but the
requirement is for a “Microstructure Examination”
Revise to read:
The requirement is for a microstructure examination, and
this term is used in paragraph 1.
Revise to read:
Alternately, utilize industry standard designations
to specify the orientation of the impact specimens.
“Carbon and low alloy steels …..”.
“Microstructure examination”
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te = technical
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1
2
(3)
4
5
(6)
(7)
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Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
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“Microstructure evaluation”
L.2.6.5
US
Annex L/
Title
ed
The grammar is not very good.
“25Cr duplex stainless steel, Type 6Mo stainless
steel and other highly alloyed austenitic stainless
steels
L.2.6.6
US
Annex L/
PARA. 1
ed
The grammar is not very good.
L.2.6.6
US
Annex L/
Annex L/
Title
ed
The grammar is not very good.
US
PARA. 1
ed
The grammar is not very good.
Annex L/
PARA. 1
L2.7.3
3rd sentence
Annex L/
PARA. 2
Annex L/
te
te
PARA. 1
ed
Non-machined surfaces may not always be “cleaned”. For
example, they may be grit blasted.
Suggest rewording 3rd sentence, 1st paragraph, to
The undefined term “quality heat treatment” is used
again.
Revise to read:
An undefined acronym, “MPS”, is used in this paragraph.
Revise to read:
L.4.3.2
US
Annex L/
Revise to read:
“Corrosion testing of 22Cr duplex stainless steel is
optional and must only be performed when
specified by either the manufacturer or the end
user. Testing shall be …..”
L.4.3.1
US
Revise to read:
“22Cr duplex stainless steel (Optional)”
L.2.6.6.2
US
Revise to read:
Corrosion testing shall be performed on all types
of components manufactured from 25Cr duplex
stainless steel, Type 6Mo stainless steel and other
highly alloyed austenitic stainless steels”.
L.2.6.6.2
US
Revise to read:
“Non-machined surfaces shall be appropriately
prepared before testing”.
“….does not require re-heat treatment, provided
the process….”
Manufacturing Procedure Specification (MPS).
PARA. 1
ed
The grammar is not very good, and does not represent
Revise to read:
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
2 Type of comment: ge = general
te = technical
ed = editorial
NOTE
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1
2
(3)
4
5
(6)
(7)
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Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
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L.5.2
US
Annex L/
PARA. 2
ed/te
commercial practice.
“Welding procedures for corrosion resistant weld
overlay shall be qualified in accordance with
ASME Section lX or ISO 10423, PSL3.”
The grammar is not very good.
Revise to read:
“The standard minimum overlay thickness shall be
3mm. Either higher or lower minimum overlay
thicknesses may be specified, if acceptable to both
the manufacturer and the end user. For Nickel
base alloy UNS N06625 (AWS ERNicrMo3), the
chemical composition shall meet either Class Fe5
or Class Fe10 as specified in ISO 10423. The
manufacturer and/or end user shall select the
appropriate class.
L.5.2
US
te
Annex L/
Weld buttering and butt welding to buttered weld preps
may contribute to field problems if not done properly. The
existing text does not provide sufficient guidelines to
avoid some of the know problems.
Add the following requirement to this section:
te
Titanium does not belong.
Delete “ and Titanium”
ed
The wording in this paragraph is different from the widely
accepted wording in ASME Section lX regarding the
manufacturer or contractors use of WPS’s.
Revise to read as follows:
This bullet needs to be revised to use standard industry
terms for carbon equivalents.
Revise to read:
L.5.3
US
US
Annex L/
PARA. 1,
L6.1.1
1st sentence
Annex L/
3
L.6.1.1
US
Annex L/
L6.1.4.2
6th bullet
Te
“Weld buttering and butt welding to buttered weld
preps shall be performed in accordance with the
guidelines specified in EEMUA Publication No.
194. Additionally, transitions in wall thickness
shall not be made in the butt weld.”
Qualification and use of WPS’s is subject to the
requirements of ISO 15614 Section 8.2 or ASME
Section lX, QW-100.1 and QW-201.
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1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
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“For carbon steels with SMYS>/= 415 MPa
(60,000 PSI) without PWHT: an increase in carbon
equivalent, CE(Pcm) or CE(IIW), of more than
0.02 for CE(Pcm) and 0.03 for the CE(IIW).”
US
Annex L/
L6.1.4.2
7th bullet
This bullet and the two equations need to be revised to
use standard industry terms for carbon equivalents and
standard industry equations for carbon equivalents.
The proposed wording in the column to the right comes
directly from API Specification 5L, Section 6.1.3.1.
The benefit of standards is that they do just that, they
standardize requirements. The current wording in the
ballot does not help the standardization effort by adding a
new equation for Pcm, when there is a widely used
existing equation for Pcm.
Additionally, it is not helpful to take the existing equation
for CE(IIW) that is correctly written, and re-name it as
“Pce”
Let’s contribute to the standardization of specifications for
the oil and gas industry, not make things less standard
and more confusing.
Revise to read:
“For carbon steels for sour service: an increase in
carbon equivalent, CE(Pcm) or CE(IIW), of more
than 0.02 for CE(Pcm) and 0.03 for the CE(IIW).
a. When the carbon content is less than or equal
to 0.12%, the carbon equivalent shall be
calculated using the following formula for CE(Pcm)
[see Note 1]:
CE(Pcm)=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+M
o/15+V/10+5B
If the heat analysis indicates a boron content less
than 0.001%, then the product analysis need not
include boron, and the boron content can be
considered as zero for the CE(Pcm) calculation.
b. When the carbon content is greater than
0.12%, the carbon equivalent shall be calculated
using the following formula for C(IIW) [see Note 2]:
CE(IIW)=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
Note 1:The CE(Pcm) formula for low carbon steels
is commonly called the Ito-Bessyo formula.
CE(Pcm) is in fact the chemical portion of the full
formula. Reference: Y. Ito & K. Bessyo,
“Weldability Formula Of High Strength Steels
Related to Heat Affected Zone Cracking, “Journal
of Japanese Welding Society; 1968, 37, (9), 938.
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(3)
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Subclause No./
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(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
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Note 2: The CE(IIW) formula is commonly called
the IIW [International Institute of Welding] formula.
Reference: Technical Report, 1967, IIW doc.IX535-67.
US
US
Annex L/
Para. 4
L6.1.5.1
1st sentence
Annex L/
PARA. 4
te
Titanium does not belong.
Revise to read “…nickel base alloys…”
ed
Does not make sense.
Annex L/
PARA. 1
te
L6.1.8
US
Annex L/
L6.1.9
US
Annex L/
L.6.1.13
Revise to read:
“The system designer or end user shall specify
such systems.”
L6.1.5.1
US
Delete “ and titanium”
PARA. 1.
3rd sentence
te
PARA. 4
te
Measurements are not typically made down in the weld
joint.
Revise to read:
The oxygen limit proposed in the draft spec does not
represent common commercial practices used to
successfully stainless steels and nickel alloys, and would
put an unnecessary burden on the industry.
Revise to read:
The requirement for the PWHT temperature to be lower
than the original temperature is not acceptable for high
strength quench and temper steels that must meet ISO
15156.
There are two options.
“The interpass temperature shall be measured
adjacent to the weld bevel. The minimum…”
“The oxygen content of the backing gas shall be
controlled to be less than 5000 ppm.”
(1) Delete this paragraph.
Or
(2) Revise to read as follows:
“For weldments that are not required to meet ISO
15156, the PWHT temperature should not exceed
the tempering temperature of the base metal(s).
For weldments that are required to meet ISO
15156, the PWHT temperature may exceed
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tempering temperature of the base metal(s) if the
PQR demonstrates that the specified mechanical
properties can still be maintained after PWHT.
US
Annex L/
PARA. 4
te
The ASME term “GMAW” needs to be included.
Add “131 MIG/135 MAG/GMAW”
Table L.9
te
The variable “t” in the last column should be uniquely
identified as the thickness of the block to distinguish it
from the thickness of material to be examined t.
Change “t” to “T” in column 1 and 2;
L7.1.3
US
Annex L/
L7.1.4
US
Annex L/
PARA. 1
te
Add footnote “t is the thickness of the calibration
test block used.”
Replace with:
“…High Pressure Service, for pipe classes with
rating above class 2500, unless more severe
requirements are specified by the manufacturer or
customer.”
L7.1.5
US
L.1
para 3
ed
ASME B31.8 is listed then ASME B31.3
Change 31.8 to 31.3 and list in normative
references
US
L.2.2
Para 2, Line
3
ed
Spelling “normalized”
Change to “normalised” consistent with rest of
document
US
L.2.4
Para 2,
Table
te
For Sour service, I find it odd that S<0,025% is allowed
when welding consumables for certain materials require
S<0,015%
S<0,015% consistent with Subclause L.6.1.7.3
and L.6.1.7.7
US
L.2.5.2
Para 1
ed
first paragraph states a definition
Move to definition section
US
L.2.6.3
Table L.4
ed
requirement stated in footnote
Move requirement to paragraph text.
US
L.2.6.3
Table L.5
ed
requirement stated in footnote
Move requirement to paragraph text.
US
L.4.3.2
Para 1
ed
...essential variables of the MPS qualification...
add MPS to abbreviated terms list
MPS is not defined in abbreviation list
US
L.4.3.3
Para 5
ed
intrados and extrados are not common oilfield terms
add definition of both terms to definitions section
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
2 Type of comment: ge = general
te = technical
ed = editorial
NOTE
Columns 1, 2, 4, 5 are compulsory.
page 19 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
US
L.5.1
Para 3, Line
1
ed
LP is defined in abbreviations, but I think SNT-TC-1A
uses PT for penetrant exam
Use “PT” vs. “LP” for consistent terminology
US
L.5.3
NOTE
following
Para 1
ed
requirements are stated in the NOTE which is informative
by definition
Move requirements in NOTE to paragraph text.
US
L.6.1.12
Para 2, Line
2
ed
Reference to “table 1” is not clear
Table L.1?
US
L.7.1.2
Line 4
ed
Reference to ASNT TC 1A is not strictly correct
designation
Change to ASNT Recommended Practice SNTTC-1A (ASNT is the issuing organization). This is
consistent with ISO 10423 citation
US
Page iii
Contents
ed
6.2 Corrosivity eveluation - Spelling
Should be “evaluation”
US
Page 3
footnote 1)
ed
"In course pf preparation
Should be "In course of preparation"
US
3.1.13
Line 2
ed
No period at end of sentence
Add period consistent with rest of document
US
3.1.14
Line 2
ed
No period at end of sentence
Add period consistent with rest of document
US
3.1.17
Line 3
ed
No period at end of sentence
Add period consistent with rest of document
US
6.1
Para 1 and 3
ed
Paragraphs 1 and 3 duplicate requirements
Harmonize paragraphs 1 and 3 to have one set of
requirements.
US
6.1
bullet 2
ed
"shall be considered" at end of bullet statement is
redundant to lead in statement
remove "shall be considered"
US
6.1
bullet 3
ed
"shall be taken into account" at end of bullet statement is
redundant to lead in statement
remove "shall be taken into account"
US
6.1
bullet 13
ed
"corrosion fatigue loaded components" needs clarification
likely should be "components subject to corrosion
and fatigue loading"
US
6.1
Para 5 and 6
ed
"...agreed upon" should state the parties of the agreement
replace with "agreed between the user/purchaser
and the supplier manufacturer"
US
6.1
Table 1
ed
Table 1 breaks up the flow of the document and is really
an informative list of materials that may be used in
Move Table 1 to an informative annex.
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2 Type of comment: ge = general
te = technical
ed = editorial
NOTE
Columns 1, 2, 4, 5 are compulsory.
page 20 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
corrosive service.
US
6.1
Table 1
te
Alloy 718 is listed with UNS number only
Include API Spec 6A718
US
6.1
Table 1
ed
Cobalt is split along two lines
fix table row widths to accommodate entire word
US
6.1
Table 1,
footnotes
ed
Footnotes a and b show 0.014%
Should be 0,014% for consistent metric
terminology
US
6.2.1
Para 1 and 2
ed
both lead sentences end with a preposition
Correct grammar
US
6.2.2.1
Para 1
ed
As stated, all items in bullet list must be evaluated
Add "where applicable" to the lead sentence.
US
6.2.2.1
Para 4
ed
Definition given for "dry gas"
Move to definitions.
US
6.2.2.1
last para
ed
...are corrosive... assumes complete knowledge about
all such chemicals now and in the future
change to "may be corrosive"
US
6.2.2.2
Para 2
ed
As stated, all items in bullet list must be evaluated
Add "where applicable" to the lead sentence.
US
6.2.2.2
bullet 6
ed
high or low water velocity is redundant
change to "water velocity"
US
6.3.1
para 2
ed
..."consideration should be given to applying a corrosion
allowance"... does not state a requirement or a real
recommendation
change to "it is recommended to apply a corrosion
allowance"
US
6.3.1
para 3
ed
statement provides informative recommendations
Change to NOTE. Add reference to Bibliography.
US
6.3.2
para 2 and 3
ed
requirements are stated with no instruction on methods to
achieve
add methodologies for evaluating mass fraction
and documentation of corrosion resistance
US
6.3.3
para 3
ed
this paragraph is informative
move to NOTE.
US
6.3.4
bullet list
ed
Note contained in first bullet
move to NOTE following list.
US
6.3.5
Table 2
ed
requirements are stated as footnotes to the table
move notes 1 and 2 in the table footnotes up into
the paragraph text above
US
6.3.5
Table 2,
note 3 and 4
ed
“Note Such…” - lacks punctuation and lacks heading
Should be “Note: Such…” and should have
heading of "a" and "b" and be called out in the
table above.
US
6.3.4.1
Table 3
ed
2nd and 4th lines state "As for production a b" which is
Improve reference to other section of document.
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ed = editorial
NOTE
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Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
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Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
unclear
US
6.4.1
Table 3,
footnote b
ed
Source of “6.3.2.2” reference is unclear
? There is no Subclause by that number in this
document
US
6.4.1
Table 3,
footnote g
ed
“60oC” is not correct
Should be “60ºC”
US
6.4.3
Para 1, Line
6
ed
“...given to ensuring adequate…” grammar error
Should be “…given to ensure adequate…”
US
6.4.4
para 3
ed
reference to NORSOK M-710 is vague as to whether or
not it is normative or informative
change wording to reflect correct reference as:
Design limitations... as stated are really material property
limitations and the list following is re-stated in the bullets
below
change first sentence to read:
US
6.5.1
para 1
ed
shall be provided according to NORSOK M-710
Material selection and property limitations for the
application of different material types are defined
in the following general requirements that apply for
all steel types including bolts.
US
6.5.1
Table 5,
footnote b
ed
“HRC = 43.796*In (HB) – 220.86” meaning is unclear
Does this mean “multiply the Brinell hardness
number by 43.796”? Need a clearer expression
for “In”.
US
6.5.1
Table 5 row
3 and 4
ed
The table is supposed to be values but notes are included
instead.
Move "values" for rows 3 and 4 to notes in the
bottom of the table.
US
6.5.1
Table 5,
footnote 1
ed
Requirements stated as footnotes to the table.
Move this requirement to the paragraph text above
Cover
See highlighted changes.
immergés
3.1.14
See highlighted changes.
3.1.14
corrosion-resistant alloys (CRA)
non-ferrous alloys where any one or the sum of
the specified amount of the following alloy
elements exceeds 50%: titanium, nickel, cobalt,
chromium, and molybdenum
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NOTE
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page 22 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
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Proposed change by the MB
Secretariat observations
on each comment submitted
NOTE
This term refers to corrosion resistant
alloys and not cracking resistant alloys as
mentioned in ISO 15156
3.1.15
corrosion-resistant materials (CRM)
ferrous or non-ferrous alloys which are more
corrosion resistant than low alloy steels. This term
includes: CRA’s, duplex, and stainless steels.
3.1.15
New definition
3
New edition caused renumbering of all subsequent terms
after 3.1.15
3.1.17
See highlighted changes.
CRMs and
6.1
See highlighted changes.
cost profile (i.e. Investment,
Materials selection should be
inspection and maintenance requirements, failure
risk evaluations and other requirements specific to
the project. It should provide
The following should be considered during the
material selection corrosion protection design
process:
 corrosivity (see 6.2), taking into account
specified operating conditions including start
up, shut-down conditions and well stimulation
and flowback operations;
 corrosion during transportation of materials,
storage, construction, installation and testing
prior to start-up should be taken into account;
 possible seawater flooding during installation
and testing should be taken into account;
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
2 Type of comment: ge = general
te = technical
ed = editorial
NOTE
Columns 1, 2, 4, 5 are compulsory.
page 23 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
Table 1
See highlighted changes.
a It is recommended to specify duplex stainless
steels of type UNS 31803 to have a minimum
nitrogen content of 0.14%
b
It is recommended to specify Super
duplex stainless steels to have a minimum
nitrogen content of 0.14% and PRE>40.
6.2.1
See highlighted changes.
The corrosivity evaluation should consider
The model to be used should be specified
environmental cracking should be
pressure is 10 °C (18 °F) or more below the
service conditions during the lifetime should be
according to ISO 15156 (all parts).
The evaluation should be based
corrosive and should be
6.2.2.2
See highlighted changes.
injection systems should as
 the use of biocides and other injected
chemicals.
temperature of 30 °C (86 °F) and
6.2.3
See highlighted changes.
compliant with ISO 15156 (All parts).
stainless steels should also be
6.3.2
See highlighted changes.
thickness of 3,0 mm (0,12 in.) may
6.3.4
See highlighted changes.
(service temperature less than 40 °C, 105 oF);
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NOTE
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page 24 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
less than 25mm (1,0 in.)
6.3.5
Table 2
See highlighted changes.
See highlighted changes.
phase should be provided
systems should be selected
per ISO 12944-2, Table 2.
The paint system specified in Table 2 shall be
used.
The paint systems should be used in combination
with cathodic protection.
The paint system is aimed at ambient operating
temperatures and maximum 50 °C (122 °F). For
higher operating temperatures, a specific
evaluation and performance documentation is
needed. For temperatures between 50oC and
100oC (122 °F to 212 °F), 2 coats immersion grade
epoxy phenolic each 125µm, may be considered
as adequate.
Table 1
See highlighted changes.
Subsea wellheads and trees
Subsea wellhead and tree equipment for
production
Subsea wellhead and tree equipment for deaerated seawater
Subsea wellhead and tree equipment for aerated
seawater
Subsea wellhead and tree equipment for produced
water and aquifer water
Nickel alloys and Stainless steels with PRE>40
(max 40 ºC, 105 ºF), Nickel alloys, Titanium.
Hydraulic fluids/glycol/methanol Chemical injection
and annulus bleed systems
Subsea production control systems
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2 Type of comment: ge = general
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NOTE
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page 25 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
Thermoplastic elastomer, high strength
g
AISI 316L instrument lines are suitable
for subsea applications provided that they are
protected by cathodic protection and the
temperature is less than 60oC (140 ºF).
6.4.2.1
See highlighted changes.
Subsea bolting not used in structural fastening
applications shall be
Bolting screwed into component bodies should be
of a
Bolts classified as main pressure bearing or for
main structural Closure bolting (as defined in ISO
10423 and 13628-4) shall be delivered
higher temperature (>20 oC, >68 oF) seawater
Table 4
See highlighted changes.
Added USC units to entire table, including
footnotes a and c.
6.4.3
See highlighted changes.
limit of about 180 HV to 200 HV (180 to 200 HB / 89
to 92 HRB).
6.4.4
See highlighted changes.
components, subsea trees, valves
6.4.5
See highlighted changes.
Subsea control umbilicals
temperature should be considered
umbilicals should be made of seawater resistant
CRM, unless
6.5.1
See highlighted changes.


pecified in 6.2.1 should be considered.
For submerged parts that may be exposed to
cathodic protection, the following shall apply:
o The SMYS of carbon and low alloy
steels should not exceed 700 MPa
(101 000 psi) (725 MPa (105 000 psi)
for bolts)
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
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NOTE
Columns 1, 2, 4, 5 are compulsory.
page 26 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
not exceed 350 HV10 (35 HRC) (330 HB).
should be given
cold deformed up to 15% may be used provided
the elongation in a tensile test can be documented
to be greater than 14% after cold forming, and that
all welds exposed to the cold deformation are
coated or isolated from the CP system.
Footnote 3) relevant part of ISO 13628,
Table 5
See highlighted changes.
Table 1
Table 1 should add another 25Cr duplex bar product—
UNS 39277.
b
sensitivity to hydrogen
Notes a and b in Table 1 contain mistakes—the minimum
nitrogen content for super duplex is 0.14%, not 0.014%.
6.3.4
Table 3
Both places specified stainless steel and nickel alloy with
PRE>40 are regarded as resistant to corrosion when
submerged in seawater and therefore do not require
cathodic protection. There was additional statement of
“service temperature less than 20 °C”. FMC assumes the
statement is based on NORSOK M-001 (Rev.4 in 2004)
which states “Alloy 625 and stainless steels with PRE ≥
40 are borderline cases and should not be used for
mechanical connections without cathodic protection when
their material temperature exceeds ambient North Sea
sea water temperatures.” in clause 4.3.6.
FMC feels that 20 °C is too low a service temperature.
Sea water temperature (both surface and subsea) in
Australia, S.E. Asia, and Africa will be 18 to 31°C. It’s
1 MB = Member body (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **)
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page 27 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
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1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
been documented that simple pitting and crevice
corrosion starts at temperatures above 40 °C.
An operator’s recent specification cites, ”…materials are
considered seawater resistant if PRE>40 without
temperature limitation.” It further states, ”…the corrosion
test as per ASTM G48A may be reduced to 40°C for
duplex stainless steel base material and 35°C for duplex
stainless steel welds, if it can be shown that the service
temperatures will not exceed these values.” It also states,
“…the corrosion test for supper duplex is at 50°C and
alloy 625 overlay weld at 80 °C.”
ASTM G48A is designed to correlate to performance in
natural sea water; the degree of corrosion damage that
occurs during testing will generally be greater than that in
natural environments. These temperatures specified for
the test in ASTM G48A should be used as temperature
limitation.
Titanium should be immune to corrosion in sea water
regardless of temperature.
Table 4
6.4.3
Minimum temperature for ASTM A320 L7M should be -73
°C instead of -100 °C as per recommended by ASTM
A320.
Maximum temperature for ASTM A453 Grade 660 should
be 65 °C and it’s allowed maximum hardness is 35 HRC
as per ISO 15156 (NACE MR0175) Table A.26, and ISO
13628-4.
Hardness limit for AISI 316 and alloy 825 gasket
materials will be 83 HRB and 92 HRB respectively
according to ISO 10423 requirement.
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page 28 of 29
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Document: ISO/TC67/SC4/WG6/13628-1 A1&A2
Date: 2007-02-07
1
2
(3)
4
5
(6)
(7)
MB1
Clause No./
Subclause No./
Annex
(e.g. 3.1)
Paragraph/
Figure/Table/
Note
(e.g. Table 1)
Type
of
comment2
Comment (justification for change) by the MB
Proposed change by the MB
Secretariat observations
on each comment submitted
Table L.5
L.5.3
The impact energy values in Table L.5 differ with the
values stated in ISO 10423 for carbon steel and
NORSOK M-630 for duplex steel. The values in table L.5
need to be aligned with these documents.
Revise “Test shall be 100 % volumetrically testing by
ultrasonic and radiography methods” to “Test shall be
100 % volumetrically testing by ultrasonic or radiography
methods”.
Annex L
This heavily references ASTM A182, but does not
mention ASTM A479, for rolled bar.
L.2.3
L.2.3 Rolled bar should reference ASTM A479. Table
L.5 Charpy V-notch of 60J for 25Cr duplex would be very
difficult to achieve. For 22Cr duplex, this is fine. 45J
would be more likely for 25Cr.
L.6.1.3.5 states “…intermetallic phases, nitrides and
carbides shall not in total exceed 0.5%.” Very nebulous
as to what method to count, measure or prove this. Why
not refer to words similar to that in the 3rd paragraph of
L.2.6.5 “…acceptance should be based on corrosion
testing or impact testing.”—as an alternative.
L.6.1.3.5
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ISO electronic balloting commenting template/version 2001-10