Source: http://cclme.org/viewcontents/?f=1-46CFR059.txt
Timestamp: 2018-01-20 03:13:59
Document Index: 723660932

Matched Legal Cases: ['ART 59', 'ART 59', 'ART 59', '§ 59', '§ 59', '§ 59', '§ 59', '§56', '§ 59', '§ 59', '§ 59', '§52', '§52', '§ 59', '§ 59', '§52', '§ 59', '§ 59', '§ 59', '§59', '§ 59', 'art 57', '§57', '§ 59', '§ 59', '§52', 'art 59', '§ 59']

CCLME.ORG - 46 CFR PART 59—REPAIRS TO BOILERS PRESSURE VESSELS AND APPURTENANCES
46 CFR PART 59—REPAIRS TO BOILERS PRESSURE VESSELS AND APPURTENANCES
1-46CFR059.txt - CFR - 4/18/2006 0:00:00 - Regulation - US
46 CFR PART 59—REPAIRS TO BOILERS, PRESSURE VESSELS AND APPURTENANCES
Authority: 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 227; Department of Homeland Security Delegation No. 0170.1.
Source: CGFR 68–82, 33 FR 18887, Dec. 18, 1968, unless otherwise noted.
§ 59.01-1 Scope.
§ 59.01-2 Incorporation by reference.
Boiler and Pressure Vessel (B&PV) Code Section I, Power Boilers, July 1989 with 1989 addenda 59.10–5 Boiler and Pressure Vessel Code Section VII, Recommended Guidelines for the Care of Power Boilers, July 1989 with 1989 addenda 59.01–5 Boiler and Pressure Vessel Code Section VIII, Division 1, Pressure Vessels July 1989 with 1989 addenda 59.10–5; 59.10–10 Boiler and Pressure Vessel Code Section IX, Welding and Brazing Qualifications, July 1989 with 1989 addenda 59.10–5
[CGD 88–032, 56 FR 35824, July 29, 1991, as amended by CGD 95–072, 60 FR 50462, Sept. 29, 1995; CGD 96–041, 61 FR 50728, Sept. 27, 1996; USCG–1999–6216, 64 FR 53225, Oct. 1, 1999]
§ 59.01-3 Adoption of the ASME Code.
(a) General. The portions of the ASME (American Society of Mechanical Engineers) Code listed in this part for various subjects are adopted and shall be the governing requirements except as limited, modified, or replaced by specific requirements in this subchapter.
(Sec. 552, 80 Stat. 383, as amended; 5 U.S.C. 552)
§ 59.01-5 Repairs, replacements, or alterations.
(c) Plan approval shall be obtained from the Officer in Charge, Marine Inspection, for all alterations to systems in service as listed in §56.01–10(c) of this subchapter and those items listed in paragraph (a) of this section.
(e) Where applicable, manufacturers' instruction books, manuals, etc., and the Mechanical Injury Section, paragraphs C4.401 through C4.427 of section VII of the ASME Code, shall be used for guidance.
§ 59.10-1 Scope.
§ 59.10-5 Cracks.
(i) During welding of cracks a preheat shall be maintained by controlled temperatures. The degree of preheat shall be determined by the rules listed in accordance with the materials P-number groupings of PW–38, section I, Appendix R, section VIII and Table Q. 11.1, section IX of the ASME Code. For thicknesses exceeding three-fourths inch, suitable U grooves should be employed. A welding sequence shall be used so as to equalize welding stresses.
(j) Postweld heat treatment of repaired cracks shall be performed in accordance with the rules specified in PW–39, section I and UW–40, section VIII of the ASME Code for boilers and pressure vessels respectively.
(k) Welded repairs of cracks shall be nondestructively tested in accordance with the rules specified in PW–40, section I, and UW–51, section VIII of the ASME Code for boilers and pressure vessels respectively.
§ 59.10-10 Corroded surfaces.
(d) Where stayed sheets have corroded to a depth not exceeding 40 percent of their original thickness, they may be reinforced or built up by welding. Where the staybolts are fitted with riveted heads, the staybolts in the reinforced area shall be renewed in accordance with the provisions of §52.20–15 of this subchapter, but where the staybolts are fitted with nuts, the nuts may be removed and after reinforcing has been applied, collars may be welded around the staybolts in lieu of the nuts. Such reinforced areas shall not exceed 400 square inches nor more than 30 inches in one direction. Two such areas in any one plate may be reinforced: Provided, that the distance between the reinforced surfaces is not less than 30 inches.
(e) When the corroded portion of a staybolted surface exceeds 400 square inches, it is permissible to make repairs by cutting out the defective portion and replacing it with a new plate, the edges of the new plate to be welded in position. In such cases, new staybolts shall be fitted in accordance with the requirements of §52.20–15 of this subchapter and where welding is performed through a line of staybolts, welded collars as required by Figure 52.01–3 of this subchapter shall be used to attach the staybolts.
(f) Eroded seams of welded pressure vessels may be repaired by rewelding the wasted portion. The wasted section of the seam shall be excavated sufficiently by grinding, flame or arc gouging or chipping to ensure proper weld penetration. Rewelded seams shall be nondestructively tested in accordance with section VIII, ASME Code.
§ 59.10-15 Rivets and staybolts.
§ 59.10-20 Patches in shells and tube sheets.
(a) Unreinforced openings in the shells or drums of boilers or pressure vessels, the diameter of which does not exceed the maximum diameter of an unreinforced opening in accordance with §52.01–100 of this subchapter may be closed by the use of a patch or plate inside the drum or shell and sealed against leakage by welding. Such plates shall have a diameter of at least 2 inches larger than the diameter of the hole and shall have a thickness equal to the thickness of the plate to which it is attached. It is not permissible to insert such patches in the shell or head flush with the surrounding plate unless the requirements of this subchapter for Class I welded pressure vessels are met.
§ 59.10-25 Stayed areas.
§ 59.10-30 Seal welding.
§ 59.10-35 Wrapper plates and back heads.
(a) Wrapper plates or backs heads shall be cut between two rows of staybolts or on a line of staybolts where the thickness is approximately the same as the original construction. If welding is employed on a line of staybolts, the staybolts shall be fitted with a welded collar as required by Figure 52.01–3 of this subchapter.
(c) The edges of existing plates and new plates shall be beveled by chipping, flame cutting or grinding so as to form a suitable groove whereby complete penetration of the weld metal will be obtained. The edge preparation and preheat shall comply with the requirements of §59.10–5(h).
§ 59.15-1 Furnace repairs.
(a) Where corrugated or plain furnaces or flues are distorted by 1 1/2 inches or more, they shall be repaired by either of the following methods:
(1) The furnace shall be forced back to a true circular shape, and the Officer in Charge, Marine Inspection, may require strongbacks or other acceptable means of support to hold the furnace from future collapse, if in his opinion such support is necessary; or,
(2) The furnace shall be adequately stayed as found necessary in the judgment of the Officer in Charge, Marine Inspection.
(b) Distortion means the difference between any single measured diameter of the furnace and the diameter of a true circle at the same location. The diameter of the true circle may be taken as the original furnace diameter or may be determined by a means acceptable to the Officer in Charge, Marine Inspection.
(c) Where the distortion does not exceed 1 1/2 inches it will not be necessary to force the furnace back to a true circle if the allowable pressure is reduced in the ratio of 1 1/2 percent for each one-tenth of an inch of distortion. However, if the maximum distortion does not exceed 1 inch and the length of the distorted area is not more than three corrugations, or, if the maximum distortion does not exceed three-fourths inch for a length greater than three corrugations of distorted area, the repairs or reduction in pressure will not be required unless considered necessary by the marine inspector.
(d) When it becomes necessary to rivet a patch to a furnace or other part of the heating surface, the riveted patch shall be placed on the waterside of the plate in order not to form a pocket in which sediment may collect.
(e) Furnace crowns which have become distorted, not in excess of the limitations provided in paragraph (c) of this section, may be repaired by pumping back the distorted section to as nearly a true circle as possible and reinforcing the same by means of a ring, arc- or gas-welded to the distorted corrugation as shown in Figure 59.15–1, the welding to be done by welders and welding processors qualified in accordance with part 57 of this subchapter using acceptable welding electrodes in accordance with §57.02–4 of this subchapter.
Figure 59.15–1—Approved method of reinforcing furnaces by means of arc or gas welding
§ 59.15-5 Stayed furnaces and combustion chambers.
(a) Where the plate forming the walls of stayed furnaces or combustion chambers become bulged between staybolts, repairs may be made by inserting an additional staybolt in the center of such space supported by the four staybolts.
(b) Where it is desired to rivet a patch to the wall of a stayed furnace or combustion chamber, the defective portion of the plate shall be cut away until solid material is reached, the patch shall be riveted on the waterside, and the staybolts renewed, and extended through the new plate.
§ 59.15-10 Bagged or blistered shell plates.
(c) Where the shell plate has blistered, bagged, or bulged to such an extent that there is an appreciable thinning of the plate, the Officer in Charge, Marine Inspection, shall require the defective portion to be cut away and the shell repaired by fitting a patch of steel plate conforming to the requirements of §52.01–90 of this subchapter in place of the defective portion. Care shall be taken that the riveting schedule of the patch is so arranged as to give the plate sufficient strength to withstand the stress placed on it in service.
Subpart 59.20—Welding Repairs to Castings
§ 59.20-1 Carbon-steel or alloy-steel castings.
Defects in carbon-steel or alloy-steel castings may be repaired by welding. The repairs shall be performed in accordance with the material specification to which the casting was originally supplied.