More than 2000 of these sets of comparators are used around. These provide a practical and functional alternative to photographic representation of casting surfaces in standards such as mss sp552001. This standard practice provides a series of reference photographs typical of the various surface irregularities common to steel pressure castings and illustrations of. Quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface. Jul 27, 2017 download mss sp55 2011 quality standard for steel castings for valves, flanges, fittings, and other piping components. 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. Valve design, manufacturing and testing requirements, including.
No internal chills or permanent metal chaplets are allowed, however, chaplets or core supports made of molding media are allowed. Visual inspection 3 reference photographs 4 terminology for reference photographs 5 comparison of mss sp 55 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. Visual inspection is based on the use of the human eye to identify surface defects, improper filling and. The durable plastic comparator plates, actual replicas of relevant characteristics. Inspection and test plan for valve inspection for 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. More than 2000 of these sets of comparators are used around the world by multinational companies and small enterprises. Pdf mss sp55 2011 quality standard for steel castings for.
Ansimss sp552011 quality standard for steel castings for. The valve is built and tested in accordance with the same specifications and procedures. 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. Ultrasonic examination method and sp112 visual and tactile method. Quality standard for steel castings for valves, flanges, fittings and other piping components visual method for evaluation of surface irregularities. Ansi mss 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. In this thesis, the visual inspection of cast metal are explored in depth, and improvements to current methods are proposed. Visual method for evaluation of surface irregularities standard number. Final inspection is performed to the requirements of ansiz1. It was developed for the purpose of providing the industry with a uniform means for identifying various types of casting surface irregularities.
It is regular practice to attach the bypass to the side of the main valve with the stems of both valves parallel. Durco g4 sleeveline valves for hf alkylation service 5 durco g4bzhft trycock valve2 this sampling valve consists of a 34 in 20 mm valve with screwed end connections. Sp94 ultrasonic examination method, and sp112 visual and tactile method. 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. 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. 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. Twelve different types of abnormalities ranging from porosity to weld repair areas are pictured with examples of both acceptable and nonacceptable cast surfaces 3. Mss sp55 2011jan01 qualty standard for steel castngs for valves flanges fttngs and other ppng components vsual method for evaluaton of surface rregulartes. Unacceptable surface discontinuities shall be removed and their removal verified by visual examination of the resultant. Guide for source inspection and quality surveillance of. Flanges and fittings and other piping components visual method for evaluation of surface irregularitie. 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. Location of bypasses on flanged valves gate valves. 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.
Other piping components visual method for evaluation of surface irregularities. Mss sp552011 quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities. Ansi mss sp 55 casting metalworking steel free 30day. Sp55 visual method, american society for testing and materials astm steel castings. Manufacturers standardization society of the valve and fittings industry, inc. 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.
Sp55 visual inspection of castings sp58 pipe hangers and supports sp96 terminology sp114 corrosion resistant pipe fittings sp4 valves for cryogenic service sp5 high pressure knife gate valves sp8 oxygen cleaning of valves sp144 pressure seal bonnet valves. 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. Mss standard marking system for valves, fittings, flanges and. Ansi mss sp 55 casting metalworking steel free 30day trial. Mss sp 55 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities published by.
Visual method mss sp 55 or other visual standards may be used to define acceptable surface discontinuities and finish. 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. Where these molding media chaplets are used, the hole remaining in the. The sp 55 provides some reference photographs for visual inspection. Mss sp552011 standards pdf, standards pdf download. Quantitative surface inspection methods for metal castings by.
Visual method mss sp55 or other visual standards may be used to define acceptable surface discontinuities and finish. Pdf mss sp55 2011 quality standard for steel castings. The mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping components. Among the requirements for visual inspection is that all surfaces of a qualification casting are to be visually inspected in accordance with mss sp55. 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. Standard marking system for valves, fittings, flanges and unions. New mss sp 55, quality standard for steel castings for valves. Guide for source inspection and quality surveillance of rotating equipment. Find the most uptodate version of mss sp 55 at engineering360. Quantitative surface inspection methods for metal castings. 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 sp 55 manufacturers standardization society of the valves and fittings industry. 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.
Sp55 visual inspection of castings sp58 pipe hangers and supports sp96 terminology sp114 corrosion resistant pipe fittings sp4 valves for cryogenic service sp5 high pressure knife gate valves sp8 oxygen cleaning of valves sp144. Manufacturers standardization society, mss sp55, visual method for evaluation of surface irregularities, 2011. Quality standard for steel castings for valves, flanges. Description download mss sp 55 2006 scaned free in pdf format. Certifications are completed on level 1 nuclear or governmental, 2, 2e and 3 commercial criticality levels. New mss sp 55, quality standard for steel castings for. American petroleum institute, api 598, valve inspection and testing, 9th ed.
Mss sp55 visual method the mss sp55 method uses images as a means to specify surfaces. Mss sp 112 quality standard for evaluation of cast. This standard practice is intended to supplement the requirements of astm specifications a216a 216m, a217a217m, a351a351m, a352a352m, a3891a389m, a487a487m, and a744a744m and to provide a. Mss sp 55 2011 quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities. Mss sp 55 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities published by mss on january 1, 2011. 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. Manufacturers standardization society, mss sp61, pressure testing of valves, 20. Mss sp 55 quality standard for steel castings for valves. Nov 01, 2011 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. Sp94 ultrasonic examination method, and sp112 visual and tactile. Mss sp25 marking system for valves, fittings, flanges and.
Visual inspection all surfaces of the qualification casting are to be visually inspected in accordance with mss sp 55. Visual inspection among the requirements for visual inspection is that all surfaces of a qualification casting are to be visually inspected in accordance with mss sp 55. Mss sp 112 quality standard for evaluation of cast surface. The specification provides 5 photos for each defect type numbering from a to e. Valves, flanges and fittings and other piping com ponents visual method. Mss standard practice sp 55 foreword the mss sp 55, 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.
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. Download mss sp55 2011 quality standard for steel castings for valves, flanges, fittings, and other piping components. Mss sp 55 visual method for evaluation of surface irregularities. Ansimss sp552011127 park street,nevienna,virginia 221804602703 28166703 2816671email mss sp 5520111. Mss sp 55 quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities. Jul 17, 2015 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. 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. The size of bypass, as shown in the table below, is in accordance with msssp45. First, the risk of type i and ii errors from the inspection process were evaluated based off of varying states of environmental and human factors in the inspection process. Scrata surface comparators castings technology international. 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. Visual inspection all surfaces of the qualification casting are to be visually inspected in accordance with mss sp55. Mss standard marking system for valves, fittings, flanges.
Quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface irregularities. Durco g4 sleeveline valves for hf alkylation service. Table of contents show below hide below 1 scope 2 definition of surface quality by visual inspection 3 reference photographs 4 terminology for reference photographs. Valve inspection procedure api6d api600 ansi asme as bs.
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