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Dimensional Control SQP

The Survey Quality Plan (SQP) details the procedures and quality control measures for conducting a Dimensional Control Survey on the Cable Laying Barge (CLB) and Support Vessel. The survey aims to establish a precise vessel reference system, verify navigation sensor positions, and produce necessary documentation while adhering to industry standards. The project is expected to take 2-3 days per vessel, with deliverables including a survey report, CAD drawings, and calibration certificates.

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koteswararo.1627medisetti
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121 views4 pages

Dimensional Control SQP

The Survey Quality Plan (SQP) details the procedures and quality control measures for conducting a Dimensional Control Survey on the Cable Laying Barge (CLB) and Support Vessel. The survey aims to establish a precise vessel reference system, verify navigation sensor positions, and produce necessary documentation while adhering to industry standards. The project is expected to take 2-3 days per vessel, with deliverables including a survey report, CAD drawings, and calibration certificates.

Uploaded by

koteswararo.1627medisetti
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Survey Quality Plan (SQP)

Dimensional Control Survey for CLB and Support Vessel

1. Introduction
This Survey Quality Plan outlines the procedures, quality control measures, and
documentation methods for executing the Dimensional Control (Dimcon) Survey on board
two vessels: the Cable Laying Barge (CLB) and the Support Vessel. The purpose of this
survey is to ensure all navigation and deployment sensors are accurately positioned and
referenced to a defined vessel coordinate system, thereby supporting precise operations
during offshore activities.

2. Scope of Work
The Dimensional Control Survey will cover the following scope:

1. Establish Vessel Reference System for both CLB and support vessel.

2. Determine Offsets for GNSS, Gyro, MRU, OASYS, and chute.

3. Chute Dimensional Checks.

4. GNSS Verification.

5. Gyro Verification.

6. Heading Verification.

7. Pitch and Roll Calibration.

8. Preparation of Report and Drawings for both vessels.

3. Objectives
The primary objectives are:

- Establish a precise vessel reference frame.

- Measure and document accurate positions of navigation sensors.

- Verify calibration of instruments.

- Produce CAD drawings and offset tables.

- Comply with industry and client standards.


4. Survey Team and Responsibilities
Party Chief / Supervisor: Project oversight and QA/QC.

Dimcon Surveyor: Execute measurements and offsets.

CAD/Report Engineer: Documentation and CAD drawing.

QA/QC Reviewer: Independent verification of key data.

5. Survey Equipment
- Total Station (Leica TS15 or similar)

- GNSS Receiver (RTK-enabled)

- Laser Distance Meter

- Bubble Level

- Laptop with CAD Software

- Calibration Tools

- Digital Camera

6. Survey Methodology
6.1 Vessel Reference System Establishment

- Define and mark Vessel Reference Point (VRP)

- Create control network and verify geometry

6.2 Offset Determination

- Measure X, Y, Z offsets of GNSS, Gyro, MRU, OASYS, Chute

6.3 Chute Dimensional Checks

- Verify geometry, orientation, and alignment

6.4 GNSS Verification

- Compare GNSS readings with known control points


6.5 Gyro Verification

- Check physical heading vs output heading

6.6 Heading Verification

- Compare gyro and GNSS heading alignment

6.7 Pitch & Roll Calibration

- Validate MRU tilt readings with calibrated tools

7. Quality Assurance & Quality Control


- Instruments pre-calibrated

- Real-time data logging

- 10% re-survey for verification

- Peer-reviewed CAD files and reports

8. Deliverables
- Dimensional Control Survey Report (PDF)

- AutoCAD Drawings (plan/elevation views)

- Offset Tables (Excel/PDF)

- Calibration Certificates

- Photo Documentation

9. Standards & References


- IMCA S 006

- IOGP Guidelines

- Manufacturer Specs

- Project-specific Requirements

10. Health, Safety & Environment (HSE)


- Follow vessel safety/PTW procedures

- Use of PPE
- Avoid trip hazards from equipment

11. Schedule
Survey estimated to take 2–3 days per vessel.

Draft report within 3 working days of completion.

Final submission within 7 working days, subject to client feedback.

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