ARTICLE KG-3RESPONSIBILITIES AND DUTIES

KG-300 GENERAL

The User, Manufacturer, and Inspector involved inthe production and certification of vessels according tothis Division have definite responsibilities and dutiesin meeting the requirements of this Division. Theresponsibilities and duties set forth in the followingrelate only to compliance with this Division, and arenot to be construed as involving contractual relationsor legal liabilities. WheneverUser appears in thisdocument, it may be considered to apply also to anAgent (e.g., designee or licensor) acting in his behalf.

KG-310 USER’S RESPONSIBILITY

It is the responsibility of the User or his designatedAgent to provide a User’s Design Specification foreach pressure vessel to be constructed in accordancewith this Division (see Article KG-1).

The Design Specification shall contain sufficient detailto provide a complete basis for Division 3 designand construction. Such requirements shall not result inconstruction that fails to conform with the rules of thisDivision.

KG-311 User’s Design Specification

The User’s Design Specification shall include thefollowing.

KG-311.1 Vessel Identification(a) vessel number(b) name, function, purpose(c) service fluid

KG-311.2 Vessel Configuration(a) shape(b) vertical or horizontal(c) nominal size or volume capacity(d) support method and location, including the foun-

dation type and allowable loading, if applicable (seeKD-110 and Article KD-7)

(e) construction type

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(f) functions and boundaries of the items coveredin KG-110

(g) items furnished by Manufacturer(h) items furnished by User

KG-311.3 Controlling Dimensions(a) outline drawings(b) openings, connections, closures

(1) quantity of each(2) type and size(3) purpose(4) location, elevation, and orientation

KG-311.4 Design Criteria(a) Design Pressure.Design pressure is the pressure

at the top of the vessel and which, together with theapplicable coincident (metal) temperature, is stampedon the nameplate. The pressure at the top of the vesselis also the basis for the pressure setting of the pressurerelief devices protecting the vessel.

(b) Design Temperature.The maximum mean metaltemperature specified by the User, at design pressure.See KD-112. This is the design temperature that is tobe stamped on the vessel.

(c) More than one combination of design pressureand temperature may be specified.

(d) Minimum Design Metal Temperature (MDMT).The MDMT is the lowest temperature to which thevessel will be exposed when the primary stresses atany location in the vessel are greater than 6,000 psi(41.4 MPa) (see KM-234). This temperature shall bedetermined considering the lowest process temperatureto which the vessel will normally be exposed in service,including process upsets, dumps, jet impingement, etc.Also, see KD-112 and KD-113.

(e) Thermal gradients across the vessel sections.

KG-311.5 Operating Conditions(a) operating pressure at coincident fluid temperature.

The operating pressureis the maximum sustained pro-cess pressure that is expected in service. The operatingpressure shall not exceed the design pressure. This

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KG-311.5 PART KG — GENERAL REQUIREMENTS KG-311.12

pressure is expressed as a positive value, and may beinternal or external to the vessel.

(b) upset and other combinations of operating pres-sures and coincident fluid temperature in sufficientdetail to constitute an adequate basis for selectingmaterials

(c) proposed methods of heating and cooling, as wellas those upset conditions that could lead to rapid heatingor cooling of the vessel surfaces

(d) cyclic operating data and conditions

KG-311.6 Contained Fluid Data(a) phase (liquid, gaseous, dual)(b) density(c) unusual thermodynamic properties(d) inlet and outlet fluid temperatures(e) flow rates(f) jet impingement streams(g) statement if noxious, hazardous, or flammable

KG-311.7 Materials Selection(a) appropriate materials for resistance to process

corrosion (specific or generic) including environmentallyinduced corrosion cracking

(b) corrosion/erosion allowanceWhen additional requirements are appropriate for the

intended service, see KG-311.12.

KG-311.8 Loadings(a) The User shall specify all expected combinations

of coincident loading conditions as listed in KD-110.These shall include reaction load vectors.

(b) This loading data may be established by:(1) calculation(2) experimental methods(3) actual measurement for similar conditions(4) computer analysis(5) published data

(c) The source of loading data shall be stated.

KG-311.9 Useful Operating Life Expected.Stateyears and cycles.

KG-311.10 Fatigue Analysis(a) Fatigue analysis is mandatory for Division 3

vessels, except as provided in KG-311.10(b). It is theUser’s responsibility to provide, or cause to be provided,information in sufficient detail so an analysis for cyclicoperation can be carried out in accordance with ArticlesKD-3 and KD-4.

(b) The User shall state if, for small vessels intendedfor laboratory use, the permissible exemption is to betaken according to KD-100(c).

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(c) The User shall state if leak-before-burst can beestablished based on documented experience with simi-lar designs, size, material properties, and operatingconditions (see KD-141) or if leak-before-burst is tobe established analytically. The number of design cyclesshall be calculated by Article KD-4 if leak-before-burstcannot be established.

(d) The User shall state whether through-thicknessleaks can be tolerated as a failure mode for protectiveliners and prestressed inner layers. See KD-103 andKD-104.

KG-311.11 Overpressure Protection.The User orhis Designated Agent shall be responsible for the design,construction, and installation of the overpressure protec-tion system. This system shall meet the requirementsof Part KR. Calculations, test reports, and all otherinformation used to justify the size, location, connectiondetails, and flow capacity for the overpressure protectionsystem shall be documented in the User Design Specifi-cation (see KR-100).

KG-311.12 Additional Requirements. The Usershall state in the User’s Design Specification whatadditional requirements are appropriate for the intendedvessel service (see Part KE).

(a) For those services in which laminar discontinu-ities may be harmful, additional examination of materialsprior to fabrication shall be specified by the User; forexample, ultrasonic examination of plate to SA-435and forgings to SA-388, in Section V.

(b) State additional requirements such as nondestruc-tive examinations, restricted chemistry, or heat treat-ments.

(c) The User shall state any nonmandatory or optionalrequirements of this Division that are considered to bemandatory for this vessel.

(d) The User shall state any special requirements formarkings and their locations. See KG-150 and KS-130.

(e) The User shall state requirements for seals andbolting for closures and covers (see KD-660).

(f) Specific additional requirements relating to pres-sure testing shall be listed in the User’s Design Specifi-cation, such as:

(1) fluid and temperature range(2) position of vessel(3) location, Manufacturer’s facility or on-site(4) cleaning and drying

(g) The User shall state in the User’s Design Specifi-cation what construction reports, records, or certifica-tions, in addition to those listed in KS-320, the Manufac-turer is required to provide to the User.

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KG-311.13 2001 SECTION VIII — DIVISION 3 KG-325

KG-311.13 Installation Site(a) location(b) jurisdictional authority (the User shall state the

name and address of the jurisdictional authority thathas jurisdiction at the site of installation of the vessel,and state any additional requirements or restrictions ofthat authority that pertain to the design, construction,or registration of this vessel)

(c) inspection agency and certification(d) environmental conditions

KG-311.14 Certification of User’s Design Specifi-cation. A Professional Engineer, registered in one ormore of the states of the United States of America orthe provinces of Canada and experienced in high pres-sure vessel design, shall certify that the User’s DesignSpecification complies with the above requirements.This Professional Engineer shall be other than theProfessional Engineer who certifies the Manufacturer’sDesign Report, although both may be employed by oraffiliated with the same organization.

KG-320 MANUFACTURER’SRESPONSIBILITY

KG-321 Structural and Pressure RetainingIntegrity

The Manufacturer is responsible for the structuraland pressure retaining integrity of a vessel or partthereof, as established by conformance with all rulesof this Division which are required to meet the condi-tions in the User’s Design Specification and shown inthe Manufacturer’s Design Report.

KG-322 Code Compliance

(a) The Manufacturer completing any vessel or partto be marked with the Code U3 symbol has theresponsibility to comply with all the applicable require-ments of this Division and, through proper certification,to ensure that any work done by others also complieswith all requirements of this Division.

(b) The Manufacturer shall certify compliance withthese requirements by the completion of the appro-priate Manufacturer’s Data Report, as described inKS-300.

KG-323 Manufacturer’s Design Report

As a part of his responsibility, the Manufacturershall provide a Manufacturer’s Design Report thatincludes:

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(a) design calculations and analysis that establishthat the design as shown on the drawings, includingas-built changes, complies with the requirements ofthis Division for the design conditions that have beenspecified in the User’s Design Specification;

(b) final and as-built drawings;(c) the results of the fatigue analysis according to

Articles KD-3 and KD-4, and KD-1260, if applicable;(d) documentation of the consideration of the effects

of heating, or heat treatments during manufacturing,and similarly, the maximum metal temperature specified,to show that the material properties or prestress usedin the design are not adversely affected (see Parts KDand KF);

(e) statement of any openings for which he has notinstalled closures such as the service cover, or closureor other connections;

(f) the limiting thermal gradients across the vesselsection.

KG-324 Certification of Manufacturer’s DesignReport

(a) A Professional Engineer, registered in one ormore of the states of the United States of America orthe provinces of Canada and experienced in high pres-sure vessel design, shall certify compliance of theManufacturer’s Design Report with the requirementsof the User’s Design Specification and of this Division.This registered Professional Engineer shall be otherthan the individual who certified the User’s DesignSpecification, although both may be employed by oraffiliated with the same organization.

(b) The Manufacturer’s Design Report shall be certi-fied only after:

(1) all design requirements of this Division andthe User’s Design Specification have been met; and

(2) the Manufacturer’s Construction Records arereconciled with the Manufacturer’s Design Report andwith the User’s Design Specification.

(c) Certification of the Design Report shall not relievethe Manufacturer of the responsibility for the structuralintegrity of the completed item for the conditions statedin the User’s Design Specification.

KG-325 Manufacturer’s Construction Records(MCR)

The Manufacturer shall prepare, collect, and maintainconstruction records and documentation of NDE reports,repairs, and deviations from drawings, as productionprogresses, to show compliance with the Manufacturer’s

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KG-325 PART KG — GENERAL REQUIREMENTS KG-330

Design Report. An index to the construction recordsfile shall be maintained current. See KS-320.

KG-330 DESIGNER

The Designer is the individual engineer, or groupof engineers, experienced in high pressure vessel design,who performs the required analysis of the vessel. TheDesigner may be in the employ of the Manufacturer,or an Agent acting in his behalf.

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