3　Basic Requirement

3.0.1　Construction contractor undertaking the slurry pipeline work shall perform project within the scope as permitted by qualification grade.Inspection unit shall have corresponding qualification grade for pipeline work inspection.Construction personnel shall have corresponding qualifications.

3.0.2　Slurry pipeline engineering construction shall be in accordance with design drawings.In case of alteration of design or material，design alteration shall be issued by original design company.

3.0.3　Prior to construction of slurry pipeline，the following requirements shall be met:

1　Engineering design drawings and relevant technical documents shall be complete.Design clarification and drawing joint review shall be conducted according to stipulated procedures.Investigation along the line shall be conducted according to the documents of underground pipeline and structures（buildings）within the construction boundary，geotechnical and hydrological engineering documents provided by owner.

2　Construction organization scheme and construction proposal shall have been approved.Technical and safety clarification shall have been completed.Self-review，joint review and licensing system shall be executed.In case of alteration，alteration approval procedures shall be fulfilled.

3　Construction personnel shall be certificated and gain the operation permit after examination.

4　Project commencement documents shall be issued.

5　Machinery and tool used for pipeline construction shall be safe and reliable and inspection &maintenance shall be conducted prior to commencement.Lifting equipment shall not be used for any lifting activities before supervised and inspected to be qualified.The spare power and equipment shall be provided.

6　Metering appliances shall be calibrated to be qualified and shall be within the term of validity period.

7　Corresponding occupational health，safety，and environmental protection plan shall have been formulated.

3.0.4　Clarification shall be conducted after completion of design clarification and drawing joint review，including the following contents:

1　Construction organization scheme and technical measures of construction.

2　Quality requirements and key control points of construction.

3　Safety and occupational health of construction.

4　New equipment，new process，new material and new technology.

3.0.5　For slurry pipeline section laying parallel with power transmission and telecommunications line，road，railway，and pipeline used for other purposes，the following provisions shall be abided by unless otherwise clearly clarified in design:

1　For pipeline section laying parallel with overhead HV power transmission line，their net spacing shall not be less than the height of electric pole and the existing state standards shall be abided by.

2　2 For pipeline section laying parallel with buried communications cable，their minimum net horizontal spacing shall not be less than 10m.The buried communications cable serving this project，simultaneous construction with the pipeline，their net spacing shall not be limited by it，but maintenance requirements shall be satisfied.

3　For pipeline section laying parallel with railway and their net spacing shall not be less than 14m.

4　For pipeline section laying parallel with grade I and II road，their net spacing shall not be less than 10m.For the partial pipeline section restricted and parallel with road，after strengthening protection measures for road are considered and the scheme have been approved，it can be buried within road land boundary but beyond the road shoulder.

5　For pipeline section laying parallel with other pipelines，their minimum net spacing shall not be less than 10m.For restricted conditions and laying needed to be within 10m，protection measures shall be strengthened.

3.0.6　Prior to pipeline construction，construction contractor shall issue written report procedures to quality & technical supervision administration of the location of pipeline work and shall accept the supervision and inspection of supervision & inspection unit.

3.0.7　Pipeline erection shall be conducted according to stipulated procedure and handover inspection shall be required between relevant disciplines.Erection record shall be formed.Quality control of each work procedure of the discipline shall be as required by construction standard.After completion of each work procedure，inspection shall be conducted and record shall be formed.In case that the previous work procedure is not inspected and approved，construction of the next work procedure shall not be allowed.

3.0.8　Quality acceptance for construction of slurry pipeline shall be in accordance with the sequence of sub item project，divisional（sub-divisional）work and engineering（sub-unit）work and shall be in compliance with the following provisions:

1　Engineering construction quality shall be in compliance with provisions of this code and relevant acceptance codes as well as design document requirements.

2　Engineering construction quality acceptances shall be conducted based upon self-inspection and qualified assessment of construction contractor.

3　Prior to concealing of concealed engineering，construction contractor shall inform supervision unit for acceptance and the acceptance documents shall be formed.

4　For the inspection items related to structural safety and application function，parallel inspection or witnessing sampling inspection shall be conducted according to provisions.

5　Appearance quality acceptances shall be jointly signed for approval at site by quality acceptance personnel.