The IIAR (International Institute of Ammonia Refrigeration), in conjunction with ANSI, issues guidelines for identification of ammonia lines. The primary article is titled “The Color Conundrum IIAR Defines Piping Convention” and announce to some changes that will be happening to Bulletin 114 that will be re-released in 2014. Piping Specs provides specific/additional requirements for the materials, components, or services that are beyond the code and standard requirements. This manual will focus on the “anhydrous” type, which means, “without water.” (Ammonium hydroxide is formed when ammonia gas is dissolved in water.) The initial cost is impacted by the diameter and layout of the piping. 114. Piping Design Basics Good piping design results in a balance between the initial cost, pressure drop, and system reliability. Because The initial For companies that intend to implement a more stringent level of acceptance criteria, as recommended by IIAR and applied by corporations that maintain best practices, the following table, In-Service Pipe Wall Thickness Thresholds for Ammonia Refrigeration Piping Systems, includes the same metrics as the ANSI/IIAR 6 Standard Table A.11.1.1.3.1 with … piping run regardless if it is 50' or 250'. Inject ammonia to a pH of 9.5. Guideline for Developing an Energy Control Plan for Manual Hand Valves in Ammonia Refrigeration Systems, 1st Edition. 4. 95: Steel Clevis . The inadvertent or accidental opening of manual hand valves has been a contributing cause in many ammonia releases and although the U.S. Occupational Safety and Health Administration (OSHA) enacted the control of hazardous energy (lockout/tagout) regulation in 1989 … They are ... 1.02- Ammonia Piping Ammonia piping should conform to ASME Standard B31.5, Refrigerant Piping and IIAR Standard 2. RELATED CONSTRUCTION SPECIFICATIONS - Piping and Equipment Cleaning Specification. Inspection and Maintenance of Ammonia Mechanical Refrigerating Systems • ANSI/IIAR Standard 2 Equipment, Design, and Installation of Ammonia Mechanical Refrigerating Systems • ANSI/ASME B31.3 Process Piping • ANSI/ASME B31.5 Refrigeration Piping and Heat Transfer Components • ANSI/NBIC-23 NBBI 2001 National Board Inspection Code Approved by the American National Standards Institute May 16, 2012 Supersedes ANSI/IIAR 3-2005 Ammonia Refrigeration Valves American National Standard for ANSI/IIAR 3-2012 96586_ANSI_IIAR3.indd 1 6/26/12 3:12 PM DX AMMONIA PIPING HANDBOOK Bruce I. Nelson, P.E. This is true for both the condensing unit capacities on the individual specification sheets or the separate suction line sizing PROCESS DESIGN OF PIPING SYSTEMS (PROCESS PIPING AND PIPELINE SIZING) (PROJECT STANDARDS AND SPECIFICATIONS) Page 4 of 55 Rev: 01 April 2011 SCOPE This Project Standards and Specifications covers process piping design and pipeline sizing, in addition to presenting most popular pressure drop equations and fluid velocity. The Provided specifications and plans are for use by the Prime contractor and his subcontractors. Gracon has expertise with multiple facets of high-pressure hydraulics, from tubing with swage lock fittings, to stainless pipe with socket weld fittings. PT&P manufactured multiple pre-insulated pipe supports for cryogenic temperatures in an ammonia plant in Louisiana. The pressure drop in the piping must be minimized to avoid adversely affecting performance and capacity. A420/A420M-02. "DOT specifications" means regulations of the United States department of transportation published in 49 CFR chapter 1. The Piping Specification (abbreviated: Pipe Spec ) is a document prepared during the design phase of any project. These cryogenic pipe supports, also known as “cold shoes” are designed with 2” thick polyurethane and foam glass for insulation and fabricated from galvanized steel for the shoe, with alloy bolts and nuts.They are 2” diameter 14″ L X 4″ W X 6″ H. Standard specification for wrought austenitic stainless steel piping fittings. Bulletin 114 has for over 20 years focused on correct labeling of pipe and equipment in an industrial ammonia refrigeration system. Standard specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service. They are en- SPECIFICATIONS ) Page 8 of 40 Rev: 01 Feb 2011 Hydrostatic Testing 1. The Conservative Approach. The reasons for this will be explained in the sample pipe described later on. Improve facility safety with Ammonia Pipe Markers. Piping Specifications are technical documents that are generated by private companies to address additional requirements applicable to a specific product or application. Compressor Discharge Line The condenser can be piped into a system with either one or multiple compressors. 5.2.6. Standard Practice for Ammonia Colorimetric Leak Testing: E1603 / E1603M - 11(2017) Standard Practice for Leakage Measurement Using the Mass Spectrometer Leak Detector or Residual Gas Analyzer in the Hood Mode: E2024 / E2024M - 11(2019) Standard Practice for Atmospheric Leaks Using a Thermal Conductivity Leak Detector: E2930 - 13 Ammonia piping shall be 304L stainless steel for corrosion protection. The guidelines presented contain important information for piping specialists and design engineers that will save money, time and effort in the several diverse industries utilizing piping systems. Carbon steel transitions or fittings may be used where required to connect to valves, vessels or similar components. FEATURES: • Complies fully with the code for pressure piping. Since ammonia is environmentally benign, having zero (GWP) and zero (ODP) characteristics, ammonia is emerging as one of the primary natural refrigerants of choice. 1 Guidelines for Identification of Ammonia Refrigeration Piping and System Components INTRODUCTION Uniform guidelines for identifying ammonia refrigeration piping. Abbreviation Description 1 ANSI American National Standards Institute Inc 2 API American Petrolium Institute 3 ASA […] 6. TABLE OF CONTENTS Page Background 2 System Configuration 4 System Stability 4 Evaporator Selection and Operation 6 DT1 vs DTM Ratings 6 Sensible Heat Ratio, Room rh%, and Evaporator Ratings 7 The operator's manual for anhydrous ammonia equipment should include instructions on proper procedures to follow when handling. Outfit your facility with standard pipe markers to convey important information about Toxic Corrosive pipe contents and potential hazards. The feed water is put into the steam drum from a feed pump. A409/A409M-01. Chapters 1, 2, 6, and 7 are significantly revised to reflect modern practices, current codes and standards, and to correct errata: Standard specification for welded large-diameter austenitic steel pipe for corrosive or high-temperature service. "Existing anhydrous ammonia storage facility" means any permanent anhydrous ammonia storage facility constructed before July 1, 1985. Good refrigeration piping design requires that the refrigeration lines be pitched in the direction of flow at approximately 1/2 inch per 10 feet or 1 inch per 20 feet. 5.2.6.2. You can find a good specification on "Ammonia Refrigeration Piping Handbook" from IIAR Chapter 2 page 2-1 and 2-2 . The purpose and requirements stem from ANSI/ASME A13.1 to provide … piping. After the steam is used it is then dumped to the main condenser. Here is such list of abbreviations related to piping engineering. All refrigerated piping shall conform to the Refrigeration Piping Code, American National Standards Institute, B31.5-1966 with addenda B31.1a-1968, which is incorporated by reference as specified in § 1910.6, as it applies to ammonia. Ammonia Piping Installation Manual. It provides the appropriate selection, specification and material grade of pipe and piping components for a given service. Most of this attention needs to be focused on the liquid drain line from the outlet of the evaporative condenser to the high pressure receiver. Pipe sizes up to and including 2” shall be schedule 40, and 2 -1/4” and above piping shall be schedule 10. This book is a guide to modern ammonia refrigeration piping, a comprehensive introduction to ammonia piping as it is practiced in the field. Refrigerant velocities in vertical lines should be at least 1500 ft/min to ensure good oil return; Hope it will be useful to new entrants as well as professionals alike. piping systems. Boiler feedwater is an essential part of boiler operations. In the steam drum the feed water is then turned into steam from the heat. The advantage of the graphic representation of this information is to show just how close to full capacity a particular selection is. 5. Ammonia is a natural refrigerant that has been used for many years in a variety of applications due to its high thermal efficiency. MATERIAL: Carbon steel SERVICE: For use on high temperature piping installation. Piping is an important aspect to hydraulic systems, comes in many forms, and requires specialized expertise. Sr. There is a publication: Bulletin 114 - Guidelines for: Identification of Ammonia Refrigeration Piping and System Components (Date: 1991) Member Price: $10.00 Non-member Price: $20.00 3) When solution is homogeneous, Inject 1% sodium nitrite. ORDERING: Specify figure number, body size, description, rod tapping, size of pin hole, size of pin, size of grip and finish. Fig. To improve the safety of ammonia refrigeration piping and system components, the International Institute of Ammonia Refrigeration (IIAR) has a guideline for labeling them: Bulletin No. Installation Details. These pressure-sensitive vinyl pipe markers exceed ANSI/ASME … Piping & Valves: 5.2.6.1. Download PDF. Liquid lines 1.5 inches and smaller shall be not less than Schedule 80 carbon steel pipe. The tests shall be made on new or repaired equipment and piping. Every engineering field has its list of abbreviations to help convey information quickly and easily. 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