Paper machine clothing traditionally has been evaluated by days life and cost per ton indices. Achievement of
maximum clothing life and minimum cost per ton often results in significant reductions in paper machine operating
performance. Sacrifices in machine performance to reduce clothing costs can reduce total mill profitability
significantly. Alternate clothing evaluation techniques based on impact on paper machine performance have been
developed. These techniques relate key operating parameters to the clothing run. Two techniques which have proven useful over a broad spectrum of machines are described. The techniques are most beneficial when clothing
performance is monitored over several months or years.
TAPPI TIP0404-26 : Paper Machine Clothing Performance Analysis
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DNV DNV-DSS-316 : Verification of Onshore Pipelines
This DNV Service Specification (DNV-DSS-316) provides criteria for and guidance on verification of
complete onshore pipeline systems and verification of the integrity of parts or phases of an onshore pipeline
system.
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DNV DNV-RP-J301 : Subsea Power Cables in Shallow Water Renewable Energy Applications
This recommended practice provides guidance for all phases of the life cycle of subsea power cable projects,
with a focus on static service in shallow water renewable energy applications.
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Steel Sandwich Panel Construction - Classification Notes No. 30.12
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Strength Analysis of Liquefied Gas Carriers with Independent Type A Prismatic Tanks - Classification Notes No. 31.11
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Strength Analysis of Liquefied Gas Carriers with Independent Type B Prismatic Tanks - Classification Notes No. 31.12
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Strength Analysis of Independent Type C Tanks - Classification Notes No. 31.13
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Criteria for Handling of Excessive Noise and Vibration Levels - Classification Notes No. 62.2
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ASME STP-PT-025 : Extended Fatigue Exemption Rules for Low CR Alloys into the Time-Dependent Range for Section VIII Division 2 Construction
A number of alloys have applications slightly into the creep range that are in cyclic service, such as process reactors. The 2007 edition of Section VIII, Div 2 provides allowable stresses for these materials, which may be controlled by creep properties. However, the fatigue design rules and fatigue exemption rules are not applicable, precluding construction of vessels using these materials at temperatures above 370°C (700°F). This report provides a simplified approach for exemption of low chrome alloys from fatigue analysis that are slightly into the creep range.
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ASME STP-PT-026 : Guaranteed Higher Strength Properties
This report discusses the various aspects related to the tensile properties in plates and forgings, including the feasibility of using guaranteed tensile values that exceed the specified minimum tensile strength in the material specifications, and provides recommendations for design stresses and Code construction based on the higher guaranteed tensile and yield strength values. The issues discussed in this report apply mainly to tensile strength values higher than the minimum specification values since the tensile strength generally governs the Code allowable stresses for carbon and low alloy steels for ASME Section VIII, Div 1 construction.
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ASME STP-PT-027 : Extended Low Chrome Steel Fatigue Rules
In this report - of high interest to the petrochemical industry - material models are examined for hardening/softening and creep behavior based on available material data sources. Creep and multi-axial effects are being considered and analytical studies are being explored for typical components using these models.
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5ppm Bilge Alarms - Standard for Certification No. 2.9, Approval Programme No. 771.61
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ASME STP-PT-028 : Impact Testing Exemption Curves for Low Temperature Operation of Pressure Piping
In this report - of high interest to the petrochemical industry - material models are examined for hardening/softening and creep behavior based on available material data sources. Creep and multi-axial effects are being considered and analytical studies are being explored for typical components using these models.
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ASME STP-PT-031 : Pressure Induced Fatigue
This document begins the process of developing an appropriate and accurate method of predicting fatigue failure due to internal pressure loading in piping components.
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ASME STP-PT-032 : Buckling of Cylindrical, Thin Wall, Trailer Truck Tanks and ASME Section XII
This report summarizes the results of a full scale tank buckling test. The results were used to develop recommended design rules specific to the design of cylindrical, thin wall, trailer truck tanks. The testing and analyses summarized in this report were performed to support the development of buckling design criteria and shell stiffening details for both hazmat and non-hazmat transport tanks.
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ASME STP-PT-066 : Design Guidelines for Corrosion, Erosion and Steam Oxidation of Boiler Tubes in Pulverized Coal-Fired Boilers
This document provides a set of Design Guidelines aimed at the minimization of the effects of fireside corrosion, particle impact erosion and steam-side oxidation on boiler tubing and other components of large pulverized coal-fired boilers. Particular emphasis is placed on the boiler components considered to be at highest risk in advanced supercritical and ultra-supercritical boilers, i.e. the superheater and reheater tubing operating at metal surface temperatures up to approximately 1350°F (730°C).
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ASME STP-SA-030 : Comparison of FEM Storage/Retrieval Machine Documents to the ASME B30.13 Specification
This report evaluates variances between Federation Europeenne de la Manutention (FEM) Automated Storage and Retrieval System (ASRS) standards, and the ASME B30.13 specification. It provides a broad perspective on the major differences between the FEM and ASME standards that can be used for consideration to maintain the technical relevance of ASME Codes and Standards products. The document compares thirteen FEM ASRS documents to the ASME B30.13 specification.
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CIE 209:2014 : Rationalizing Nomenclature for UV Doses and Effects on Humans
The field of atmospheric ultraviolet radiation (UV) research is plagued with difficulties in nomenclature. The problems arise from (a) the strong wavelength dependence of UV radiation received at the Earth's surface, (b) the ad-hoc way disparate groups have approached the subject and (c) the incorrect use of units when action spectra for different UV effects are incorporated. This report highlights some of the issues, taking vitamin-D synthesis, a beneficial effect, as a specific example. Standard vitamin-D dose (SDD) and minimum vitamin-D dose (MDD) are proposed, analogous to the standard erythema dose (SED) and minimum erythema dose (MED) that are in common use for erythema. In recognition of the fact that currently accepted action spectra may be revised in future if new data become available, it is recommended that spectrally resolved irradiance measurements are maintained and continued so that biologically effective irradiances and doses may be reprocessed.
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CSA ANSI Z21.74-2014 : Portable Refrigerators for Use With HD-5 Propane Gas
Preface
This is the third edition of ANSI Z21.74 Standard for Portable refrigerators for use with HD-5 propane gas. It supersedes the previous editions published in 1992 and 1983.Scope
1.1 This Standard covers gas-fired refrigerators, hereinafter referred to as refrigerators or appliances, having refrigerated spaces for: a) storage of foods; or b) storage of foods and making ice; or c) storage of frozen foods and making ice; or d) storage of foods and the storage of frozen foods and making ice. This Standard applies to newly produced, unvented, portable refrigerators constructed entirely of new, unused parts and materials, with input ratings of 1000 Btu per hour (293 W) or less, and which are for use with HD-5 propane gas only. These refrigerators are intended for use both indoors in adequately ventilated structures and outdoors. 1.2 This Standard applies to refrigerators designed for self-contained fuel supplies and using fuel cylinders of not more than 75 cubic inches (1230 cm3) (21/2 pounds nominal water capacity). Fuel supplies shall be in accordance with the Standard for the Storage and Handling of Liquefied Petroleum Gases, NFPA No. 58. 1.3 Refrigerators submitted for examination under this Standard shall use Group 2 refrigerants in quantities not exceeding 6 lb (2.7 kg). Group 2 refrigerants include, but are not limited to, the following: Refrigerant ANSI/ASHRAE 34 Designation Ammonia (NH3) 717 Refrigerant systems shall comply with the applicable provisions of the Standard Safety Code for Mechanical Refrigeration, ASHRAE 15. 1.4 A refrigerator submitted for examination under this Standard shall be provided with a direct self-contained type of system employing the absorption or adsorption principle of refrigeration. 1.5 This Standard also covers all electrical equipment, wiring and accessories built in or supplied with refrigerators for use with low voltage direct current or alternating current. Appliances for use with alternating current shall be nominally rated 120 volts, 60 hertz. 1.6Refrigerators for use with gas fuel that are also for use with electricity shall also comply with the applicable provisions of the Standard for Household Refrigerators and Freezers, UL 250. 1.7 If a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification. 1.8 All references to psi throughout this standard are to be considered gauge pressures unless otherwise specified. 1.9 This standard contains SI (Metric) corresponding to the yard/pound quantities, the purpose being to allow the standard to be used in SI (Metric) units. (Standard for use of the International System of Units (SI): The Modern Metric System, IEEE/ASTM SI I0 or ISO 80000-1:2009 Quantities and units - Part 1: General are used as a guide in making metric conversion from yard/pound quantities.) If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for a measurement and a corresponding value in other units are both specified as a quoted marking requirement, the first stated unit, or both shall be provided. 1.10 In this Standard "shall" is used to express a requirement, i.e, a provision that the user shall satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised by not required; and "may" is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the test explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.↧
CSA ANSI Z21.41-2014/CSA 6.9-2014 : Quick Disconnect Devices for Use With Gas Fuel Appliances
Preface
This is the fourth edition of ANSI Z21.41 / CSA 6.9, Standard for Quick disconnect devices for use with gas fuel appliances. It supersedes the previous editions published in 2011, 2003,1998.Scope
1.1 This Standard applies to newly-produced, hand-operated quick-disconnect devices, hereinafter also referred to as devices, constructed entirely of new, unused parts and materials which provide a means for connecting and disconnecting appliances or appliance connectors to gas supplies and which are for indoor and outdoor applications. These devices shall be equipped with automatic means to shut off the gas when the devices are disconnected. The mating parts shall be held together securely either by a positive locking means or by means requiring a straight pull to disconnect. These devices shall be capable of operation at ambient temperatures between 32°F to 200°F (0°C to 93.3°C) if intended for indoor use only, or temperatures between -20°F to 200°F (-28.8°C to 93.3°C) if intended for indoor/outdoor use. These devices shall also be capable of operation at temperatures of -40°F (-40°C) when so specified by the manufacturer. 1.2 This Standard applies to quick disconnect devices for use with natural, manufactured and mixed gases, propane gas and LP gas-air mixtures, having maximum gas pressure ratings of up to and including 60 psi (414 kPa). A manufacturer must specify what pressure will be marked on the product and the applicable pressures in the performance tests shall be adjusted to meet the testing requirements. 1.3 All references to psi (kPa) throughout this standard are to be considered as gauge pressure unless otherwise specified. 1.4 Annex A contains provisions that are unique to Canada. 1.5 Clause 2, contains a list of standards specifically referenced in this standard, and sources from which these reference standards may be obtained. 1.6 This Standard contains SI (Metric) corresponding to the yard/pound quantities, the purpose being to allow the standard to be used in SI (Metric) units. (Standard for use of the International System of Units (SI): The Modern Metric System, IEEE/ASTM SI 10 or ISO 80000-1:2009 Quantities and units-Part 1: General are used as a guide in making metric conversion from yard/pound quantities.) If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for measurement and a corresponding value in other units are both specified as a quoted marking requirement, the first stated unit, or both shall be provided.↧
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