1、Designation:E157512Standard Practice forPressure Water Cleaning and Cutting1This standard is issued under the fixed designation E1575;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses i
2、ndicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the personnel requirements,opera-tor training,operating procedures,and recommended equip-ment performance/design for the proper operation of
3、all typesof pressure water-jet cleaning and cutting equipment as nor-mally used by industries concerned with construction,maintenance,repair,cleaning,cutting,and demolition work.1.2 The term high-pressure water jetting covers all waterjetting,including the use of additives or abrasives at pressuresa
4、bove 100.5 psig(0.69 MPa).1.3 Any person required to operate or maintain pressurewater-jetting equipment shall have been trained and havedemonstrated the ability and knowledge to do so in accordancewith the original equipment manufacturers instructions,specifications,and training programs.1.4 The va
5、lues stated in inch-pound units are to be regardedas the standard.The values in parentheses are for informationonly.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate sa
6、fety and health practices and determine the applica-bility of regulatory limitations prior to use.See 3.1.3,4.4,5.7.2,5.11,5.14,6.2,6.7,and Sections 8 and 11 for specifichazards statements.2.Referenced Documents2.1 ANSI/IEEE Standard:2957-1987 IEEE Guide for Cleaning Insulators3.Terminology3.1 Defin
7、itions of Terms Specific to This Standard:3.1.1 dump system,nthe discharge orifice operator-controlled,manually operated device or system that reducesthe pressure to a level that yields a pressure flow at the nozzlethat is considerably below the risk threshold.3.1.2 guard,nshould be so designed,cons
8、tructed and usedthat it will:(a)provide positive protection;(b)prevent all access to the danger zone during operations;(c)cause the operator no discomfort or inconvenience;(d)not interfere unnecessarily with production;(e)operate automatically or with minimum effort;(f)be suitable for the job and th
9、e machine;(g)preferably constitute a design,integral built-in feature;(h)provide for machine oiling,inspection,adjustment andrepair;(i)withstand long use with minimum maintenance;(j)be durable,fire-and corrosion-resistant;(k)not constitute a hazard by themselves(without splinters,sharp corners,rough
10、 edges,or other sources of accidents);and(1)protect against foreseeable use and foreseeable misuse ofoperational contingencies,not merely against normally ex-pected hazards as determined from a job safety analysis3.1.3 high-pressure water cleaning,vthe use of high-pressure water,with or without the
11、addition of other liquids orsolid particles,to remove unwanted matter from varioussurfaces,where the pressure of the liquid jet exceeds 100.5 psig(0.69 MPa)at the orifice.(WarningThe limit of 100.5 psig(0.69 MPa)does not mean that pressures below 100.5 psig(0.69 MPa)cannot cause injury or require an
12、y less attention tothe principles of this practice.Adequate precautions,similar tothose of this practice,are required at all pressures.)3.1.4 high-pressure water cutting,vthe use of high-pressure water,with or without the addition of other liquids orsolid particles,to penetrate into the surface of a
13、 material for thepurpose of cutting that material,where the pressure of theliquid jet exceeds 100.5 psig(0.69 MPa)at the orifice.3.1.5 hose assembly,na hose with safety coupling eachindicating pressure capacities and attached in accordance withmanufacturers specifications.3.1.6 lance,na rigid metal
14、tube used to extend the nozzlefrom the end of the hose.3.1.7 lancing,van application whereby a lance and nozzlecombination is inserted into,and retracted from,the interior ofa pipe or tubular product.1This practice is under the jurisdiction of ASTM Committee E34 on Occupa-tional Health and Safety an
15、d is the direct responsibility of Subcommittee E34.10 onIndustrial Safety.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1993.Last previous edition approved in 2008 as E1575-08.DOI:10.1520/E1575-12.2Available from American National Standards Institute(ANSI),25 W.4
16、3rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.8 moleing,van application whereby a hose fittedeither with a nozzle or with a nozzle attached to a lance isinserted into,and retracted from,the interior of a tubularproduct.It is a system commonly intended for cleaning theinternal surfaces of tubes,pipes,or drains.It can be self-propelled by its backward directed jets and is manu
