ASTM C1214M-2013 Standard Test Method for Concrete Pipe Sewerlines by Negative Air Pressure (Vacuum) Test Method (Metric)《负压(真空)试验法测定混凝土管下水道的标准试验方法(公制)》.pdf
《ASTM C1214M-2013 Standard Test Method for Concrete Pipe Sewerlines by Negative Air Pressure (Vacuum) Test Method (Metric)《负压(真空)试验法测定混凝土管下水道的标准试验方法(公制)》.pdf》由会员分享,可在线阅读,更多相关《ASTM C1214M-2013 Standard Test Method for Concrete Pipe Sewerlines by Negative Air Pressure (Vacuum) Test Method (Metric)《负压(真空)试验法测定混凝土管下水道的标准试验方法(公制)》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C1214M 13Standard Test Method forConcrete Pipe Sewerlines by Negative Air Pressure(Vacuum) Test Method (Metric)1This standard is issued under the fixed designation C1214M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers procedures for testing concretepipe sewerlines, when using the negative air pres
3、sure (vacuum)test method to demonstrate the integrity of the installedmaterial and the construction procedures. This test methodcovers testing of 100 to 900-mm diameter circular concretepipe sewerlines utilizing gasketed joints.NOTE 1The user of this specification is advised that methodsdescribed in
4、 this test method may also be used as a preliminary test toenable the manufacturer or installer to demonstrate the condition of sewerpipe prior to delivery or backfill. Minimum test times presented in Table1 are for pipelines. Holding times for testing an individual pipe may haveto be increased to a
5、llow for the accumulation of leakage when the testedpipe are incorporated into a continuous pipeline.NOTE 2The user of this test method is advised that the negative airpressure (vacuum) test criteria presented in this test method are similar tothose in general use. The test and criteria have been us
6、ed widely andsuccessfully in testing smaller diameter pipe. Larger pipe will be acceptedmore conveniently by visual inspection and individual joint testing.NOTE 3Test times tabulated and the rate of air loss in this standard arebased on successful testing of installed pipelines. However, since air a
7、ndwater have different physical properties, retests of some pipelines notmeeting field air tests have been successful when tested with water.1.2 This test method is the SI companion to Test MethodC1214.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with i
8、ts use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. See Section 6 forspecific safety precautions.2. Referenced Documents2.1 ASTM Standards:2C822 Terminology Relatin
9、g to Concrete Pipe and RelatedProductsC924 Practice for Testing Concrete Pipe Sewer Lines byLow-Pressure Air Test MethodC969 Practice for Infiltration and Exfiltration AcceptanceTesting of Installed Precast Concrete Pipe Sewer Lines3. Terminology3.1 DefinitionsFor definitions of terms relating to co
10、ncretepipe, see Terminology C822.4. Summary of Test Method4.1 The sewerline to be tested is plugged. Air is removedfrom the plugged line by a vacuum pump or vacuum reservoir.The amount of vacuum loss is used to determine the accept-ability of the sewerline.5. Significance and Use5.1 This is not a ro
11、utine test. The values recorded areapplicable only to the sewer being tested and at the time oftesting.6. Safety Precautions6.1 WarningThe user of this test method is advised thatthis test will be dangerous if a line is not prepared properly andproper procedures are not followed.6.2 Access manholes
12、or structures must be ventilated and airquality continuously monitored.6.3 No one shall be allowed in or near the manholes duringtesting.7. Preparation of the Sewerline7.1 Where practical, clean the line prior to testing, wet thepipe surface, and eliminate debris.NOTE 4The user of this test method i
13、s advised that a wetted exteriorpipe surface is desirable and will produce more consistent test results. Airmay pass through the walls of dry pipe. This can be overcome by wettingthe pipe. Usually, moisture absorbed from the backfill is sufficient to copewith this situation. If the problem persists,
14、 segmental testing of the linewill establish if there is a significant leak.7.2 Plug all pipe outlets including laterals. Review safetyprecautions in Section 6.1This test method is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.09 on
15、 Methodsof Test.Current edition approved July 1, 2013. Published December 2013. Originallyapproved in 1992. Last previous edition approved in 2009 as C1214M 02(2009).DOI: 10.1520/C1214M-13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servic
16、eastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States18. Procedure8.1 Determine the test time for the sewerline
17、to be tested byusing Table 1. Table 1 has been established using the criteriaspecified in Table 2 and the formulas contained in the Appen-dixes. The test time is the time required for the vacuum to dropfrom 23.6 to 16.9 kPa.NOTE 5To provide satisfactory test results, the vacuum pump shall becapable
18、of evacuating the sewer test section in the required test time, orless, as determined by 8.1. The pump capacity required to accomplish theevacuation of the line is equal to the rate necessary to reduce the sewer tothe desired pressure plus the allowable vacuum loss rate:C 5 0.17D2L/T1Qwhere:C = vacu
19、um pump capacity, m3/s,T = required test time, or less,D = pipe internal diameter, m,L = length of test section, m, andQ = allowable vacuum loss rate, m3/s.8.2 Evacuate air until the internal air pressure of thesewerline is lowered by approximately 27.0 kPa of mercury.Close the valve on the vacuum l
20、ine and shut off the vacuumpump. Allow the air pressure to stabilize. (WarningMercuryhas been designated by EPA and many state agencies as ahazardous material that can cause central nervous system,kidney and liver damage. Mercury, or its vapor, may behazardous to health and corrosive to materials. C
21、aution shouldbe taken when handling mercury and mercury containingproducts. See the applicable product Material Safety DataSheet (MSDS) for details and EPAs websitehttp:/www.epa.gov/mercury/ faq.htmfor additional information.Users should be aware that selling mercury and/or mercurycontaining product
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