CSG Committee
TABLE OF CONTENTS
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The CSG committee is planning to prepare a supplementary revision to Version 5 of the Code of Practice for Upstream Polyethylene Gathering Networks.
The purpose is to address minor updates in industry practice and issues that have been raised with the use of Version 5.
If you have experienced any issues with the application of Version 5 of the Code of Practice or its Companion Papers that have not already been identified in the list below, please add them for consideration by the committee via this form. The form will be open for contributions until Friday 13 May 2022.
If you would like to be part of the working groups to address these issues, you can sign up here.
CSG COP Issues
| Section | Sub section | Issue | Details |
|---|---|---|---|
| 1 | 1 | 1 | Update to suit V5S |
| 2 | No update proposed | ||
| 3 | 3.6 | Use of pipe with damage | Do we need a industry accepted method to determine when a defect is excessive? Some CSG proponents have established their own. Is an industry wide version justified? |
| Emerging Materials / Technologies | Update required for: Emerging materials and technologies and PE other than PE100, Crack resistant (RC), Raised Temperature (RT), use of reinforced RTP (reinforced thermo plastic pipe), NDT? Are these a CoP or Companion Paper topics? | ||
| 4 | Table 4.5.2 | Who uses all elements of this table? | Increased strength test and increased QA/QC, are these applicable and used in CSG industry? |
| 4.6.3 | Miners rule not sufficiently explained | It is being adopted more and more. A worked example is warranted. | |
| Table 4.10 | Only covers various utility owners | Guidance for separation distance when the same utility owner to b considered. | |
| 4.12 | Separation of pipe to trench wall | Not covered. Is comment necessary? | |
| 4.12.1 | Table numbering | Table in section 4.12.1 V5 is currently titled Table 4.10. Correct title to be Table 4.12.1 | |
| 4.14 | External loading | Is enough guidance provided, reference to a AS? Where did 120kN come from? Separate external loading from blasting and seismic survey required. | |
| 4.18/4.23 | Overpressure protection. | Is enough guidance as to where 110% came from presented? Is there enough guidance on water network “open path designs”? | |
| 5 | No update proposed | ||
| 6 | No update proposed | ||
| 7 | Table 7.5 | Improvements in notes | Does notes cover concerns about fast weld fit up times required for small bore / thin wall butt welds? Likewise, does notes cover side wall “burn through” concerns? Burn through to be covered in CP? |
| 7.5 | Re-word “between projects” | Review wording on site welding assessments | |
| 7.5.1 | Golden welds | Is treatment of golden welds consistent across industry? | |
| 7.9 | Production welding | Review wording and frequency of production welding | |
| 8 | 8.2 | Pressure test interruptions | Suggest comments are made discussing when and how a pressure test interruption can be treated |
| 8.2.3&8.2.9 | AS 2885.5 | In latest revision of AS/NZS2885.5, a new calculation is presented to calculate throw distances. Does this need to be incorporated in CoP? | |
| 8.4.1 | Last bullet point | Definition of “shall be less than 1.0” may need additional explanation | |
| 8.4.3.1 | Component Pre Test | An example is needed for tapping saddles. Do these need a pre-test? If not say so. | |
| 8.8 | Approved pressure test course | Which Training Courses are readily available? Alternative wording required. | |
| 9 | 9.4 | Operational Data | Update re a query for Sec 9.4 for “necessary operational data” |
| 10 | No update proposed | ||
| 11 | 11.6.2 | Condition Assessment | Review of Assessment of residual life (part of condition assessment), see discussed in CP-11-001 |
| 11.7.7.2 | Surveillance Patrols / Records | Clarify an earlier query on Sec 11.7.7.2 for “network surveillance patrol and other surveillance records” | |
| 11.8.5/11.13 | Remaining life review | Review wording re the 10year review process. Is it being followed in industry? | |
| Appendix | A | Radiation Contours | Update Radiation Contours calculations and provide the background in update to CP-04-001 |
| B | PCC-2 | Sample calculations were not done on latest version of PCC-2. | |
| C | Testing of Golden welds | Revise wording to address concerns when squeeze offs need to be held for long periods. Are all CSG proponents using guidance on Golden Welds? | |
| D | No update proposed | ||
| Companion Papers | |||
| CP-02-001 | Competency | Available and no update proposed | |
| CP-02-002 | UAV | Available, but needs to be made more “user friendly” | |
| CP-03-001 | PE Material Selection | Available possible update required as per 3.6 above | |
| CP-03-002 | PEX / PERT | Not started – is an industry wide CP justified at this stage? | |
| CP-04-001 | Design Factors | Need clarification / worked example of mean wall pipe temperature. Update re radiation contours (see Appendix A above). | |
| CP-04-006 | System Design | Available and no update proposed | |
| CP-04-00X | Mine Subsidence | Not started – but seen as required. | |
| CP-05-001 | Safety in construction | Available and no update proposed | |
| CP-05-002 | Ploughing | Has been identified as needs an update to cover all various techniques | |
| CP-05-003 | Trenchless construction | Available and no update proposed | |
| CP-05-004 | Survey | Not started – is an industry wide CP justified at this stage? | |
| CP-06-001 | Side Wall Fusion | Not started, but justified (see Table 7.5 above) | |
| CP-06-002 | Welding in previous service | Not started – is an industry wide CP justified at this stage? | |
| CP-07-001 | Inline Inspection | Not started – is an industry wide CP justified at this stage? | |
| CP-08-001 | Alternatives for Exclusion Zones | Available and no update proposed | |
| CP-08-002 | Strength test | Available and no update proposed | |
| CP-08-003 | Leak test | Available and no update proposed | |
| CP-11-001 | Condition assessment | Update required – see above (11.6.2) | |
| CP-11-002 | Flow stopping | Available and no update proposed | |
| CP-11-004 | Safety in operations | Available and no update proposed | |
| CP-11-005 | Isolating, Purging and Commissioning | Not started – is an industry wide CP justified at this stage? | |
| CP-11-006 | Reinforcement Clamp | Not started – is an industry wide CP justified at this stage? | |
| CP-11-007 | Guidelines for Emergency Response | Not started – is an industry wide CP justified at this stage? | |
| CP-11-00X | Integrity Management | New Companion paper recommended to cover Integrity management of PE gathering |