Often times, the interpretation of what is acceptable. Quantitative surface inspection methods for metal castings by michelle m. Mss sp552011 quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities. Type 1 unacceptable type 212 a and b are acceptable all others are unacceptable results are to be documented api 20a quality control. Images are used for comparison to cast surfaces in the mss sp55 method. They should be familiar with ansi msssp 55 quality standard for steel castings for valves, flanges, fittings and other piping components visual method for evaluation of surface irregularities. The standard suggests des ignating acceptance criteria on drawings. Quality standard for steel castings for valves, flanges. 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 osx. The mss sp55, quality standard for steel castings for valves, flanges, fittings, and. The mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping components.
Ansi mss sp 55 casting metalworking steel free 30day trial. 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 more details. If the purchaser does not provide acceptance criteria for visual examination is same as qualification casting. Castings, surface acceptance standards, visual examination. It was developed for the purpose of providing the industry with a uniform means for identifying various types of casting surface irregularities.
Visual method for evaluation of surface irregularities, was originally adopted in 1961. Quality standard for steel castings for valves, flanges and fittings and other piping components visual method for evaluation of surface irregularities gives series of reference photographs of surface irregularities common to steel pressure castings and illustrations of generally acceptable and rejectable quality. 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. Quality standard for steel castings for valves, flanges, fittings and other piping components visual method for evaluation of surface irregularities.
Visual method for evaluation of surface irregularities. More than 2000 of these sets of comparators are used around the world by multinational companies and by small enterprises. Pressure testing of valves copeland industries, inc. Photographs are to be taken of the qualification casting in the asreceived condition to document surface finish and general appearance. Porosity in castings metal and metallurgy engineering. Quality standard for steel castings for valves,flanges,fittings and other piping components. 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. These provide a practical and functional alternative to photographic representation of casting surfaces in standards such as mss sp552001. 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 series of reference photographs typical of the various surface irregularities common to steel pressure castings and illustrations of generally acceptable and generally rejectable quality. End users and oems want additional guidelines, johnson said. This standard practice and its supporting mss cast surface comparator may be applied to surfaces formed by any casting method.
Mss sp 55 quality standard for steel castings for valves, flanges. My reading on qm 07 valve inspectionreading iii api6d. Manufacturers standardization society of the valve. Quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface. The durable plastic comparator plates, actual replicas of relevant characteristics. Quality standard for steel castings for valves, flanges, fittings, and other. Description download mss sp 55 2006 scaned free in pdf format. Find the most uptodate version of mss sp 55 at engineering360. Scrata surface comparators castings technology international. Mss sp 55 manufacturers standardization society of the valves and fittings industry. Find out how your company can benefit from plm built on salesforce. Quantitative surface inspection methods for metal castings. This surface quality standard practice provides criteria for the visual and tactile evaluation of cleaned ascast surface finishes of components manufactured from castings.
Any visible leakage shall be cause for the casting to be unacceptable and call for corrective action. Its a good companion app to itunes, spotify and mss sp 55 pdf download and best of all, its free. 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. Inspector should run through precisely the acceptance criteria they follow. Comparisons published in table 1 represent the mss interpretation. Comparisons pub lished in table 1 represent the mss interpretation. Reference photographs in mss sp55 are to be used to determine acceptability of castings. The acceptance criteria set by the customer for these methods must be interpreted by the manufacturer correctly in order to meet the design specifications. Mss sp55 2011 quality standard for steel castings for. Production pressure tests verify the pressure containing capability of production units. The mss sp55, quality standard for steel castings for valves, flanges, fittings, and other piping components visual method for evaluation of surface. Valve design, manufacturing and testing requirements, including.
Inspection and test plan for valve before manufacturing activity by no. 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. 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. A lot shall be accepted if all the samples of the lot meet the specified acceptance criteria. Click here to purchase the full version from the ansi store. Voelker a thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of master of science major.
Current visual inspection standards are qualitative and make it difficult to interpret these standards. Mss sp55 2011jan01 qualty standard for steel castngs for valves flanges fttngs and other ppng components vsual method for evaluaton of surface rregulartes. Where these molding media chaplets are used, the hole remaining in the casting wall will need to be welded. Standard marking system for valves, fittings, flanges and unions. More than 2000 of these sets of comparators are used around the world by multinational companies and small enterprises. Quality standard for steel castings for valves, flanges, fittings, and other piping components. New mss sp 55, quality standard for steel castings for.
Standard practice sp55 quality standard for valves, flanges and fittings and other piping components visual method feb1001 inspection and testing. Quantitative surface inspection methods for metal castings by. Inspection and test plan reference document acceptance criteria verifying document 1. 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. Then youll enjoy mss sp 55 pdf download for mac, with its nice features and accessibility. In this white paper, learn how you can configure freely without requiring any custom development, and quickly update configurations as your needs evolve. This standard practice provides methods and acceptance standards for the film method of radiographic examination of steel castings for valves, flanges, fittings, and.
This standard practice provides methods and acceptance standards for. Mss standard marking system for valves, fittings, flanges. Mss sp 112 quality standard for evaluation of cast. Castings are evaluated today when api rp591 testing is requested, and the test revision of rp591 has loosened the radiographic acceptance criteria by one level. Mss sp55 visual method the mss sp55 method uses images as a means. 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. More stringent criteria may be specified in the engineering design. Standards and codes are written and revised by 25 technical committees and address topics such as valves. The specification provides 5 photos for each defect type numbering from a to e. Complete document quality standard for steel castings for valves, flanges, fittings, and other piping components radiographic examination method. Standards written by mss address valves, valve actuators, valve modification, pipe fittings, pipe hangers, pipe supports, flanges, and associated seals. Mss sp 55 quality standard for steel castings for valves. Additionally, the standard specifies criteria for the height and frequency of surface abnormalities through a series of grids of a controlling square inch.