90% 3D model review is a final review in 3 sets of model reviews, 30%, 60% and 90%. 90% 3D model review held when the 3D model has basically been completed. This occurs when all equipment, piping, valves, instruments, electrical, structural and other items have been modeled in 3D environment. In this review, the items to be reviewed will include such things as the location and orientation of valve hand wheels for operability, the location of local instruments for maintainability.
Agreement on the location of all these critical items should precede the start of piping isometrics EXTRACTION or the preparation of instrument location plan drawings, if required.
Below is the piping check point which shall be reviewed prior to 90% 3D model review:
| PROJECT NAME :CLIENT :PROJECT NO. :DOCUMENT NO. :AREA OR WBS NAME :REV. : DATE : DD/MM/YYYY |
| Check List for 90% Model Review1The comments of 60% model review are closed.2Inter discipline model review is conducted and comments of the same are incorporated.3All Equipment checked to IFC Vendor information.4All piping modeled including piping below 2”5All Pipe supports are modeled and checked6All Stress comment incorporated and checked7All Steel Structures are completed and checked with respect to IFC drawings8All Buildings are completed and checked with respect to IFC drawings9All Foundations are completed and checked with respect to IFC drawings10All Online, Off-line and equipment mounted Instruments are completed and checked with respect to approved vendor drawings.11All Telecom items including CCTV’s, PAGA speakers are shown and checked12All Lighting fixtures are completed and checked.13All electrical panels / Distribution Boards are completed and checked.14All Fire & Gas Equipment is completed and checked15All U/G facilities completed and checked.16Any exclusion from 60% model review is incorporated and checked.17All Utility Stations are identified, located and checked for the maximum length of hose with proper access.18All Safety showers and eye baths are identified, located and checked with proper access.19Location of mobile and portable /manual firefighting equipment are shown and checked.20All Sample connections are identified and modeled and checked for proper access.21The minor access platforms, if any are located and checked for proper access.22The offline instruments including analyzer enclosures/panels etc. are modeled at proper locations and checked.23The fire and gas detectors are shown and location of each is checked by HSE for function and by piping for obstruction.24The cable routing inside the building is complete and checked so that it is not obstructing any movement of crane or walkways.25All the instrument stands and supports are checked so that they are not obstructing the walkways on the platforms especially in case of platforms located on vertical vessels and columns. 26Location of junction boxes is checked so that they are not obstructing the walkways.27Junction boxes/fire boxes are modeled with volume for door opening and does not enter into the hard standing/access areas located for crane/walkways, etc.28Cable conduits are checked so that they are not coming out in the middle of the road/ walkways.29Ensure that arrangement of small bore piping has been done in such a way that the pipe support is provided to prevent the breakage due to vibration.30Ensure purging connection is provided at the dead end of flare header.31Ensure that cooling water lines branch off from the header from top.32Ensure that there are no valves installed with the stem pointing below the horizontal plane in downward direction.33Ensure that the vents from an analyzer house/cabinet are located and routed to atmosphere at safe height from grade.34The vents of seal chambers of reciprocating compressors are properly routed and supported.35Unloading and storage of chemicals and additives is reviewed for any environmental impact.36Vendor trim piping around equipment is put in the model and checked.37Ensure Toe plate is modeled properly at platform opening.38Check that the Siren/safety alarm system is installed at top of highest building and at the centre of plant area.39The proper lighting poles and fixtures etc. are shown and checked.40The safety equipment like wind socks, breathing apparatus are strategically located as per escape and safety equipment layout.41The routing of branch cable trays to the instrument and support for the same is properly shown and checked.42The parking area, traffic barriers, boulders, etc. as applicable is modeled and checked.43Steam tracing manifolds and steam jacketing details are shown in model and checked.44All design change notices (DCNs) are taken care with respect to completeness. |
Instructions for filling the check list for 90% model review:
1. This list is not intended for use in milestone reviews, it is for ensuring that the model is ready for the mile stone review and therefore it is required to be completed and signed before proceeding for milestone review.
2. Many check points in the check list do not specify the criteria or basis for checking. The points are listed with the intention to cover the full scope of model and that there are no miss-outs before proceeding for mile stone review. Separate check prints of points need to be maintained by Area Designers, Lead Designers and Area engineers to support the readiness of the model review.
3. This check list is to be prepared by piping Lead Designer for each area or WBS separately.
4. Though this check list is prepared by piping Lead Designer and checked by piping Area Engineer, it requires input from many disciplines. In such cases the piping lead designer has to obtain the confirmation from the designer of the respective discipline.
5. The Model Manager is the approver for the list.
6. The signed copy is to be preserved for record.
