Sp55 visual method, american society for testing and materials astm steel castings. Mss standard practice sp55 foreword the mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping compo nents visual method for evaluation of surface irregularities, was originally adopted in 1961. Sp94 ultrasonic examination method, and sp112 visual and tactile. It was developed for the purpose of providing the industry with a uniform means for identifying various types of casting surface irregularities. Certifications are completed on level 1 nuclear or governmental, 2, 2e and 3 commercial criticality levels. Ansimss sp552011 quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities manufacturers standardization society 01oct2011 23 pages. The study guide outlines the fundamentals of source inspection and may be useful to all personnel conducting such activities to perform their jobs in a competen and ethical manner.
Quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities. Quality assurance, quality control for severe service. Visual inspection all surfaces of the qualification casting are to be visually inspected in accordance with mss sp 55. Valve standards international standards for valves in piping systems. Location of bypasses on flanged valves gate valves. Mss, the manufacturers standardization society of the valve and fittings industry is a nonprofit standards developing organization that is devoted to the development of the industry. Guide for source inspection and quality surveillance of. Visual method for evaluation of surface irregularities standard number. Mss standard practice sp61 ii foreword this standard practice for pressure testing of valves was originally adopted in 1961. The size of bypass, as shown in the table below, is in accordance with msssp45. Inspection procedure valve r1 aa p p p p p p p p p casting defects checked in accordance with mss sp55 final inspection procedure p p a gsl company quality endorsed. Terms and conditions foreword table of contents 1 scope 2 definition of surface quality by visual inspection 3 reference photographs 4 terminologies for reference photographs 5 comparison of mss sp55 acceptance criteria. Mss sp 55 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities. Other piping components visual method for evaluation of surface irregularities.
Quality standard for steel castings for valves, flanges. Mss sp 55 quality standard for steel castings for valves. Pressure testing of valves copeland industries, inc. Documents sold on the ansi webstore are in electronic adobe acrobat pdf format, however. Mss sp 55 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities published. Manufacturers standardization society of the valve and fittings industry, inc. Quantitative surface inspection methods for metal castings by. Mss sp 55 visual method, and american society for testing and materials astm a802 that reference the steel castings research and trade association scrata comparator plates continue to be the leading standards in metal casting inspection. Visual inspection the visual inspection shall be performed based on acceptance criteria being addressed at mss sp 55 visual method for evaluation of surface irregularities. The mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping components.
Quantitative surface inspection methods for metal castings by michelle m. Table 1 of section 5 is provided to show mss interpretation as to the relationship between this standard practice and the levels of surface quality illustrated by the comparators and the associated photographs of the castings technology international cti, comparators for the definition of surface quality. Quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities standard practice developed and approved by the manufacturers standardization society of the valve and fittings industry, inc. Ansimss sp552011 quality standard for steel castings. Visual inspection is based on the use of the human eye to identify surface defects, improper filling and. Valves, flanges and fittings and other piping com ponents visual method. Porosity in castings metal and metallurgy engineering. Pdf mss sp55 2011 quality standard for steel castings.
Add standard and customized parametric components like flange beams, lumbers, piping. Sp 94 ultrasonic examination method, and sp 112 visual and tactile method. Mss sp552011 standards pdf, standards pdf download. Unacceptable surface discontinuities shall be removed and their removal verified by visual examination of the resultant. Mss sp552011 english secure pdf quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities standard published 10012011 by manufacturers standardization society. More than 2000 of these sets of comparators are used around. Quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface. Visual inspection 3 reference photographs 4 terminology for reference photographs 5 comparison of mss sp55 acceptance criteria with cti comparators covering surface texture quality standards annex a referenced standards and applicable dates b type i through xii acceptable and unacceptable reference photographs. Standard marking system for valves, fittings, flanges and unions. The mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities, was originally adopted in 1961.
Sp94 for ultrasonic examination method and sp112 for visual and tactile. This standard practice provides a series of reference photographs typical of the various surface irregularities common to steel pressure castings and illustrations of generally acceptable and. Final inspection is performed to the requirements of ansiz1. Visual inspection of casting to mss sp55 and mss sp112 receiving, inprocess, and final dimensional inspections to relevant valve standards other inspections or tests can be performed or evaluation criteria applied when specified by the customer. Mss sp 112 quality standard for evaluation of cast. Description download mss sp 55 2006 scaned free in pdf format. New mss sp 55, quality standard for steel castings for.
Ansimss sp552011127 park street,nevienna,virginia 221804602703 28166703 2816671email mss sp 5520111. Among the requirements for visual inspection is that all surfaces of a qualification casting are to be visually inspected in accordance with mss sp55. Mss sp 55 manufacturers standardization society of the valves and fittings industry. Ansimss sp552011 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities reference version not for inspection standard practice developed and approved by the manufacturers standardization society of the valve and fittings industry, inc. The result is in some ways redundant for those that have only used tagging in mavericks, but can be very useful for anyone who has an older version of os x or existing tags on. Standards written by mss address valves, valve actuators, valve modification, pipe fittings, pipe hangers, pipe supports, flanges, and associated seals. Valve design, manufacturing and testing requirements, including. Quality standard for steel castings for valves, flanges and fittings.
The specification provides 5 photos for each defect type numbering from a to e. However, when ordered, bottom attachment can be provided with the stem of the bypass at a. Manufacturers standardization society, mss sp55, visual method for evaluation of surface irregularities, 2011. Where these molding media chaplets are used, the hole remaining in the. Manufacturers standardization society of the valve. Mss sp25 marking system for valves, fittings, flanges and. Ansi mss sp 55 casting metalworking steel free 30day trial.
Theres a new 2011 edition of the mss sp 55, quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities. The existence of an mss standard practice does not in itself preclude the manufacture, sale, or use of products not conforming to the standard practice. Standard practice sp55 quality standard for valves, flanges and fittings and other piping components visual method feb1001 inspection and testing feb1007 sample inspection process feb2 dprnon conformance classification. Manufacturers standardization society, mss sp61, pressure testing of valves, 20. Find the most uptodate version of mss sp 55 at engineering360. Quality standard for steel castings for valves, flanges, fittings and other piping components visual method for evaluation of surface irregularities. It was developed for the purpose of providing a uniform means of testing valves commonly used in the full open and full closed type of. No internal chills or permanent metal chaplets are allowed, however, chaplets or core supports made of molding media are allowed. Quantitative surface inspection methods for metal castings. American petroleum institute, api 598, valve inspection and testing, 9th ed. An mss standard practice is intended as a basis for common practice by the manufacturer, the user, and the general public.
Visual inspection all surfaces of the qualification casting are to be visually inspected in accordance with mss sp55. Visual method mss sp55 or other visual standards may be used to define acceptable surface discontinuities and finish. Mss sp 55 visual method for evaluation of surface irregularities. Valve inspection procedure api6d api600 ansi asme as bs. It is regular practice to attach the bypass to the side of the main valve with the stems of both valves parallel.
The sp 55 provides some reference photographs for visual inspection. Mss sp 55 pdf download for mac allows you to search through the tags on your computer, either the existing ones from premavericks or the new osxcreated tag system. Mss sp45 2, bypass and drain connections mss sp55, quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities mss sp91, guidelines for manual operation of valves 3 terms and definitions for the purposes of this document, the following definitions. Ansimss sp55 2011 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities. Ansi mss sp 55 2011 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities reference version not for inspection standard practice developed and approved by the manufacturers standardization society of the valve and fittings industry, inc. New sp for slipon and lapjoint flanges is being evaluated marking and terminology tc 302 sp25, is being updated for the next edition fugitive emissions marking requirements to sp25 is being considered quality tc 304 sp55, visual qualification for. Mss standard marking system for valves, fittings, flanges.
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