CFR > Title 46 > Chapter I > Part 54 > § 54.25-10. Low temperature operation--ferritic steels (replaces UCS-65 through UCS-67)
Current as of: Oct. 2009
(a) Scope. (1) This section contains requirements for pressure vessels and nonpressure vessel type tanks and associated secondary barrier, as defined in Sec. 38.05-4 and Sec. 154.7 of this chapter, and their parts constructed of carbon and alloy steels which are stressed at operating or hydrostatic test temperatures below 0 [deg]F.
(2) The service temperature is the minimum temperature of a product at which it may be contained, loaded and/ or transported. However, the service temperature shall in no case be taken higher than given by the following formula:ts=tw-0.25(tw-tB)where:ts=Service temperature.tw=Boiling temperature of gas at normal working pressure of container but not higher than +32 [deg]F.tB=Boiling temperature of gas at atmospheric pressure.Only temperatures due to refrigerated service usually need to be considered in determining the service temperature, except pressure vessel type cargo tanks operating at ambient temperatures must meet paragraph (d) of this section. ``Refrigerated service'', as used in this paragraph, means a service in which the temperature is controlled by the process and not by atmospheric conditions.
(b) Specifications. Materials used in the construction of vessels to operate below 0 [deg]F. (but not below the designated minimum service temperature) shall conform to a specification given in Table UCS-23 in section VIII of the ASME Boiler and Pressure Vessel Code (incorporated by reference; see 46 CFR 54.01-1) and the following additional requirements:
Note: For high alloy steels refer to Sec. 54.25-15. For heat treated steels refer to Sec. 54.25-20.
(1)(i) For minimum service temperatures not lower than -67 [deg]F., ferritic steels shall be made with fine grain practice and shall have an austenitic grain size of 5 or finer, and shall be normalized. Consideration will be given to other heat treatments. Refer to Sec. 57.03-1(d) of this subchapter. Plate for pressure vessel applications shall conform to the requirements of ASTM A 20 (incorporated by reference, see Sec. 54.01-1). It may be produced by the open hearth, basic oxygen or electric furnace process and shall conform to the requirements of Table 54.25-10(b)(1). (Other alloying elements may only be present in trace amounts.)
(ii) Mechanical properties shall be within the following limits:Ultimate strength........................
--58,000 1-85,000 1
p.s.i.Yield strength...........................
--Minimum 35,000 p.s.i.
--Maximum 80 percent of
ultimate.Elongation minimum.......................
--20 percent in 8 inches, or
--24 percent in 2 inches, or
--22 percent in 5.65
[radic]A, where ``A'' is the
test specimen cross
sectional area.
Table 54.25-10(b)(1)------------------------------------------------------------------------
Manganese
Minimum service 1 temperature [deg]F
Max. C 1
range 1
percent
percent-------------------------------------------------------------------------30...........................................
0.20
0.70-1.35-50...........................................
.16
1.15-1.50-67...........................................
.12
1.30-1.60------------------------------------------------------------------------1 At service temperatures intermediate between those specified,
intermediate amounts of carbon and manganese will be allowed (in
proportion to the actual service temperature variation from that
listed), provided all other chemical and mechanical properties
specified for steels in this temperature range are satisfied.
Range
percentSi..........................................................
0.10-0.50
MaximumS...........................................................
0.035P...........................................................
0.035Ni..........................................................
0.80Cr..........................................................
0.25Mo..........................................................
0.08Cu..........................................................
0.035Nb..........................................................
0.05V...........................................................
0.08
(2) For minimum service temperature below -67 [deg]F., but not below the designated minimum service temperature, ferritic steels shall be normalized, low carbon, fully killed, fine grain, nickel alloy type, conforming to any one of the specifications in Table 54.25-10(b)(2). Consideration will be given to other heat treatments. Refer to Sec. 57.03-1(d) of this subchapter for quenched and tempered steels. The ultimate and yield strengths shall be as shown in the applicable specification and shall be suitable to the design stress levels adopted. The service temperature shall not be colder than the minimum specified in Table 54.25-10(b)(2) for each steel.
Table 54.25-10(b)(2)------------------------------------------------------------------------
Steel
Minimum service temperature------------------------------------------------------------------------A-203, 21/4 percent, Ni, normalized....
-80 [deg]F. for Grade A.
-75 [deg]F. for Grade B.A-203, 31/2 percent, Ni, normalized....
-130 [deg]F. for Grade D.
-110 [deg]F. for Grade E.5 percent Ni, normalized.................
Dependent on chemical and
physical properties.------------------------------------------------------------------------
(3) The materials permitted under paragraphs (b) (1) and (2) of this section shall be tested for toughness in accordance with and shall satisfy the applicable requirements of subpart 54.05.
(4) Welded pressure vessels or nonpressure vessel type tanks and associated secondary barriers, as defined in Sec. 38.05-4 of subchapter D (Tank Vessels) of this chapter shall meet the toughness requirements of subparts 57.03 and 57.06 of this subchapter with regard to weld procedure qualifications and production testing.
(5) The material manufacturer's identification marking required by the material specification shall not be die-stamped on plate material less than one-fourth inch in thickness.
(c) Design. Pressure vessels must meet the requirements for Class I-L and II-L construction. (See Table 54.01-5(b) for applicable requirements). Except as permitted by Sec. 54.05-30, the allowable stress values used in the design of low temperature pressure vessels may not exceed those given in Table UCS-23 of section VIII of the ASME Boiler and Pressure Vessel Code for temperatures of 0 [deg]F. to 650 [deg]F. For materials not listed in this Table allowable stress values are determined in accordance with Appendix P of Section VIII of the ASME Boiler and Pressure Vessel Code.
(d) Weldments and all materials used in pressure vessel type cargo tanks operating at ambient temperatures and constructed of materials listed in Table UCS-23 must pass Charpy impact tests in accordance with UG-84 at a temperature of -20 [deg]F or colder, except as provided by paragraphs (d)(1), (d)(2), and (d)(3) of this section.
(1) Charpy impact tests are not required for any of the following ASTM materials if the thickness for each is 5/8 inch or less, unless otherwise indicated:
(i) A-182, normalized and tempered.
(ii) A-302, Grades C and D.
(iii) A-336, Grades F21 and F22 that are normalized and tempered.
(iv) A-387, Grades 21 and 22 that are normalized and tempered.
(v) A-516, Grades 55 and 60.
(vi) A-533, Grades B and C.
(vii) All other plates, structural shapes and bars, and other product forms, except for bolting, if produced to a fine grain practice and normalized.
(2) Charpy impact tests are not required for any of the following ASTM materials if the thickness for each is 11/4 inch or less:
(i) A-203.
(ii) A-508, Class 1.
(iii) A-516, normalized.
(iv) A-524.
(v) A-537.
(vi) A-612, normalized.
(vii) A-662, normalized.
(viii) A-724, normalized.
(3) Charpy impact tests are not required for any of the following bolt materials:
(i) A-193, Grades B5, B7, B7M, and B16.
(ii) A-307, Grade B
(iii) A-325, Type 1.
(iv) A-449.
[CGFR 68-82, 33 FR 18828, Dec. 18, 1968, as amended by CGFR 69-127, 35 FR 9977, June 17, 1970; CGD 73-133R, 39 FR 9178, Mar. 8, 1974; CGD 74-289, 44 FR 26007, May 3, 1979; CGD 77-069, 52 FR 31626, Aug. 21, 1987; CGD 85-061, 54 FR 50964, Dec. 11, 1989; USCG-1999-5151, 64 FR 67178, Dec. 1, 1999; USCG-2000-7790, 65 FR 58460, Sept. 29, 2000; USCG-2003-16630, 73 FR 65170, Oct. 31, 2008]________________________________________________________________________
State Laws: Watercraft| Alabama | Alabama Code > Title 33 > Chapter 5 - Registration And Operation Of Vessels | | Alabama Code > Title 33 > Chapter 6 - Discharge Of Litter And Sewage From Watercraft | | Alabama Code > Title 33 > Chapter 6A - Recreational Vessel And Residence Boat Sewage Discharges Regulated | | Alaska | Alaska Statutes Chapter 05.25 - Watercraft | | Alaska Statutes Chapter 30.30 - Abandoned And Derelict Vessels | | Arizona | Arizona Laws > Title 5 > Chapter 3 - Boating And Water Sports | | California | California Harbors and Navigation Code > Division 3 - Vessels | | California Harbors and Navigation Code > Division 4 - Masters, Crews And Cargoes | | California Harbors and Navigation Code > Division 5 - Pilots For Monterey Bay And The Bays Of San Francisco, San Pablo, And Suisun | | Connecticut | Connecticut General Statutes > Title 15 > Chapter 268 - Boating | | Delaware | Delaware Code Title 23 > Chapter 21 - Motorboats | | Delaware Code Title 23 > Chapter 22 - Boating Safety | | Delaware Code Title 23 > Chapter 23 - Operation Of A Vessel Or Boat While Under The Influence Of Intoxicating Liquor And/Or Drugs | | Delaware Code Title 23 > Chapter 24 - Exemptions From Civil Liability For Rendering Vessel Traffic Information Services | | Florida | Florida Statutes > Title XXIV - Vessels | | Florida Regulations Chapter 61B-60 - Yacht and Ship Brokers | | Florida Regulations > Division 68D - Vessel Registration and Boating Safety | | Idaho | Idaho Code Title 67 > Chapter 70 - Idaho Safe Boating Act | | Illinois | Illinois Compiled Statutes > 625 ILCS 45 - Boat Registration and Safety Act | | Indiana | Indiana Code > Title 9 > Article 31 - Watercraft Titling And Registration | | Indiana Code > Title 25 > Article 28 - Boat Pilots | | Kansas | Kansas Statutes > Chapter 32 > Article 11 - Boating And Water Activities | | Maine | Maine Revised Statutes > Title 10 > Chapter 204-B - Watercraft Manufacturers, Distributors And Dealers | | Maine Revised Statutes > Title 10 > Chapter 212-A - Maine Marina And Boatyard Storage Act | | Maine Revised Statutes > Title 10 > Chapter 627 - Vessels | | Maine Revised Statutes > Title 12 > Chapter 935 - Watercraft And Airmobiles | | Maine Revised Statutes Title 23 > Chapter 412 - Waterborne Transportation | | Massachusetts | Massachusetts General Laws > Part I > Title XIV > Chapter 90B - Motorboats And Other Vessels | | Michigan | Michigan Laws > Chapter 123 > Act 68 of 1957 - Regulation Of Houseboats | | Michigan Laws > Chapter 445 > Act 88 of 1989 - Watercraft And Outboard Motor Manufacturers, Distributors, And Dealers | | Minnesota | Minnesota Statutes Chapter 86B - Water Safety, Watercraft, and Watercraft Titling | | Missouri | Missouri Laws > Title XIX > Chapter 306 - Watercraft Regulation and Licensing--State Water Patrol | | Nevada | Nevada Revised Statutes > Chapter 488 - Watercraft | | New Hampshire | New Hampshire Revised Statutes > Chapter 270-A - Use Of Houseboats | | New Hampshire Revised Statutes > Chapter 270-B - Abandoned Boats | | New Hampshire Revised Statutes > Chapter 270-D - Boating And Water Safety On New Hampshire Public Waters | | New Hampshire Revised Statutes > Chapter 270-E - Vessel Registration And Numbering | | New Mexico | New Mexico Statutes Chapter 66 > Article 12 - Boating | | New Mexico Statutes Chapter 66 > Article 13 - Boating While Intoxicated | | New York | New York Laws - General Business > Article 38 - Vessel Dealer Agreements | | New York | New York Laws > General Business > Article 38 - Vessel Dealer Agreements | | North Carolina | North Carolina General Statutes Chapter 75A - Boating and Water Safety | | North Dakota | North Dakota Code > Chapter 20.1-13 - Boating Regulation | | North Dakota Code > Chapter 20.1-13.1 - Intoxication Testing of Boat Operators | | North Dakota Code > Chapter 20.1-17 - Aquatic Nuisance Species | | Ohio | Ohio Code > Title 15 > Chapter 1547 - Watercraft And Waterways | | Ohio Code > Title 15 > Chapter 1548 - Watercraft Certificates Of Title | | Ohio Code > Title 45 > Chapter 4585 - Actions Relating To Watercraft | | Oregon | Oregon Statutes > Title 61 - Small Watercraft | | Rhode Island | Rhode Island General Laws > Chapter 46-8. Registration of Outboard Motors | | Rhode Island General Laws > Chapter 46-9. Pilots – Rhode Island Sound, Narragansett Bay, Sakonnet River, and Tributaries | | Rhode Island General Laws > Chapter 46-9.1. Pilots–Block Island Sound | | Rhode Island General Laws > Chapter 46-22. Regulation of Boats | | Rhode Island General Laws > Chapter 46-22.1. Uniform Boat Title Act | | Rhode Island General Laws > Chapter 46-22.2. Alcohol Boating Safety Act | | Rhode Island General Laws > Chapter 46-27. Personal Watercraft Safety Act | | South Carolina | South Carolina Code > Title 29 > Chapter 9 - Liens On Ships And Vessels | | South Carolina Code > Title 50 > Chapter 21 - Equipment And Operation Of Watercraft | | South Carolina Code > Title 50 > Chapter 23 - Watercraft And Outboard Motors | | South Carolina Code > Title 50 > Chapter 25 - Boating And Surfing At Particular Localities | | South Dakota | South Dakota Laws > Title 32 > Chapter 03A - Title, Registration And Taxation Of Boats | | South Dakota Laws > Title 32 > Chapter 07B - Regulation Of Boat Dealers | | South Dakota Laws > Title 42 > Chapter 8 - Watercraft | | Tennessee | Tennessee Code > Title 69 > Chapter 9 - Boating Regulation | | Texas | Texas Civil Statutes > Title 132 > Chapter 19 - Boat Or Motor Manufacturers, Distributors, And Dealers | | Utah | Utah Code > Title 73 > Chapter 18 - State Boating Act | | Utah Code > Title 73 > Chapter 18 - Boating - Litter and Pollution Control | | Utah Code > Title 73 > Chapter 18 - Water Safety | | Utah Code > Title 73 > Chapter 18 - Financial Responsibility of Motorboat Owners and Operators Act | | Vermont | Vermont Statutes > Title 25 > Chapter 1 - Operation of Vessels | | Virginia | Virginia Code Title 29.1 > Chapter 7 - Boating Laws | | Virginia Code Title 29.1 > Chapter 8 - Watercraft Dealer Licensing Act | | Virginia Code Title 62.1 > Chapter 18 - Protection of Aids to Navigation | | Wisconsin | Wisconsin Statutes > Chapter 30 > Subchapter V - Regulation Of Boating |
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