lpg tank farm inspection services

LPG TANK FARM INSPECTION SERVICES 11 April 2023 of 10

SCOPE OF WORK

LPG TANK FARM INSPECTION SERVICES

DATE 11 April 2023

PREPARED BY:

Neil Scott…………………………………………..

Reliability Group

LPG TANK FARM INSPECTION SERVICES 11 April 2023 of 10

TABLE OF CONTENTS

SCOPE OF WORKS....................................................................................................................3

GENERAL REQUIREMENTS......................................................................................................10

SPECIFICATIONS.....................................................................................................................12

MATERIALS AND EQUIPMENT.................................................................................................13

NOTES

INVITATION TO BIDLPG TANK FARM INSPECTION SERVICES

Petrojam Limited wishes to carry out detailed Visual and Ultrasonic in-service inspection on its LPG Tank Farm at its 96 Marcus Garvey Drive Kingston location. The LPG Bullets and Spheres used for storage and sales are constructed according to ASME Section VIII and API 510 having the requisite dimensions and capacities as list in the table below.

Vessels Gauge Product Diameter LengthCapacity(BBLS)

Sphere

S-1 Radar BUTANE 45’ - 8500

S-3 Radar PROPANE 45’ - 8500

Bullets

23/24/25 Roto/Vol PROPANE 12' 8" 66' 3" 1648

26 RadarLPG

SLOP 12' 8" 66' 3" 1648

41/42 Radar BUTANE 11' 5" 81' 0" 1558

43 Radar BUTANE 12' 0" 82' 0" 1794

44 Vol BUTANE 12' 0" 82' 0" 1794

46/47/48Dip

Stick/Vol BUTANE 10' 10" 80' 0" 1137

300 Dip Stick BUTANE 10' 3" 48' 5" 715

301 Dip Stick BUTANE 10' 3" 48' 5" 716

302 Dip Stick BUTANE 10' 3" 48' 5" 717

303 Dip Stick BUTANE 10' 3" 48' 5" 718

304 Dip Stick BUTANE 10' 3" 48' 5" 719

305 Dip Stick BUTANE 10' 3" 48' 5" 720

306 Dip Stick BUTANE 10' 0" 46' 4" 649

307 Dip Stick PROPANE 10' 0" 43' 5" 607




1. SCOPE OF WORK

The contractor is required to furnish all the necessary quality assurance, supervision, labour, transportation, tools, equipment, and other services, necessary to cover the provision of detailed in-service inspection in accordance with the specification herein and any applicable government regulations. See a brief description of the number and sizes of the vessels to be inspected in the table below.

The scope of the project includes all activities that are necessary to carry out a comprehensive Inspection of the LPG Tank Farm and the development and submission of a scope of repairs to include but not limited to the following:

1. Pumping stations and related installations

LPG TANK FARM INSPECTION SERVICES 3

− Examine the state of corrosion on the pumps.− Examine hold-down bolts.− Examine electrical connections.− Examine the state of grounding connection and cable.

2. Loading Bay for road tankers.3. Infrastructural facilities examination

− Bullets concrete foundation (damaged masonry) and supports.− Surrounding ground surface area and dike condition.− Metal Staircases, walkways and handrails.− Settlement of the vessel.− Drainage system

4. Bullets and Spheres examination− Ultrasonic thickness survey to be conducted at the Thickness

Measurement Locations (TML’s) i.e. on the hemispherical heads, cylindrical shell, shell to dish end weld seam, manhole, nozzles etc. connected to the vessel.

− The thickness data recorded as per the TML points shall be stored in the Ultrasonic Data Logger (grid format) in the sequence as displayed in the VESSEL MANUAL and on the isometric sketches of individual equipment as per standard practice.

− Visual inspection for external pitting and corrosion of bullet surfaces.− Protective paint coating, nozzles and supports. The support of Bullets D-

42 and D-44 are the only two vessels that are not equipped with gusseted saddles. Keen attention must be given when inspecting the lining on the underside between concrete support and bullets.

− Saddle connections to vessel.− Hold-down bolts for all gussets.− Framework structure and foundation for Spheres.− Condition of paint and the Dry Film Thickness of painting on vessels.− Grounding and lightning protection devices.

5. Piping and fittings Network− Ultrasonic Examination of elbows, branch connections, dead ends,

reducer / expander and straight runs for corrosion and erosion.− NDT inspection for external pitting and corrosion of piping surfaces.− Examine all steel pipes for rust and damage that may have been caused

by non-existent PM and verify that they are properly supported and coated.

− Examine all valves for corrosion between flange faces and leaking.− Examine water draw-off line.− Examine the labeling of these pipes to ensure the medium transported is

clearly marked on the surface.


− Determine upon inspection whether there are any factors that would increase the likelihood of a leak or the consequences of a fire/explosion, and therefore require more urgent action.

− Dry film thickness of painting on pipelines.

6. Valves and Accessories Examination− Verify and document valve leakage with the application of an ultrasonic

technology (e.g. UltraProbe).− PSV’s connected to the vapour space.− Pressure gauge connected to the vapour space.− SAAB Radar gauge level indicator.− Plugged shut-off valve for connections.− Temperature indicators.− Thermal Relief valves.− PSV’s to ensure the following information are stamped on the valve or on

a separate metal plate affixed to it:i. The manufacturer’s identification including name and catalogue

or type numberii. The start to discharge pressure

iii. Adequate space on the valve or metal plate for subsequent stamping or periodic re-test dates.

− Examine vent pipe fitted to PSV’s for adequate support and verify minimum vertical height of 2m is maintained and fitted with rain caps.

7. Strapping− Ensure strapping information is clearly painted on equipments.

8. Data Plate

Examine each Vessel to verify whether a data plate is permanently affixed and clearly visible and include as a minimum the following information:

− The Pressure Vessel code.− The manufacturer’s name and serial number.− The water capacity in Kilolitres.− The maximum working pressure in KPa.− The date of manufacture.− Design temperature range in 0C (minimum and maximum).− Date of test, pressure applied, inspection authority and its symbol.− Provision of sufficient space for subsequent re-test marking.

9. Corrosion Protection− Examine electrostatic protection measure and earthing connection.

10. Electrical− Examine electrical conduits for mechanical soundness.


− Examine explosion proof junction box bolts for tightness and missing bolts.

− Ensure all conductors are terminated (i.e. exposed conductors are not allowed).

− Inspect grounding connections for firmness and cleanliness.− Verify that seal fittings are properly applied and installed.

11. Fire Protection− Examine monitors, sprinklers, pipelines and fire hydrant.

12. Ensure recommendations are referencing the requisite codes and standards.13. The inspection contractor shall be qualified and experienced up to ASNT level-III

to perform the day-to-day instructions related to the work.14. The inspection contractor shall submit a final inspection report outlining a

detailed scope of work to be performed to the Project Manager, after the completion of inspection.

15. The Inspection contractor shall use chalk, paint spray or automatic marking system for areas giving reject indications or where any form of irregularities are observed.

The Inspection contractor is required to produce a detailed Findings and Scope of Work (bulleted format) and presented as per the tabular format below.

LPG TANK FARM INSPECTIONFindings and Scope of Work

Vessel Tag Findings Scope of Work Priority

The location of work shall be in the LPG Tank Farm on the basis of name and details of Pressure Vessels and Pipeline route as described in the Bill of Quantities below:

2. GENERAL REQUIREMENTS


The detailed specifications given hereinafter are for the items of works described in the schedule of quantities attached herein, and shall be guidance for proper execution of work to the required standards. It may also be noted that the specifications are of a generalized nature and these shall be read in conjunction with the description of item in the Engineers Bill of Quantities and drawings/sketches provided.Unless specifically otherwise mentioned, all the applicable codes and standards (API, ASME etc.), shall govern in all respects of workmanship, quality and methods of inspection.

1. The inspection contractor’s personnel shall be suitably qualified and shall have satisfactory record of previous experience on similar works. The qualifications and experience of the personnel shall be equivalent to, or better than the standards laid down by:

a. American Society of Non-Destructive Testing (ASNT) level II.b. American Society for Non-Destructive Testing SNT-TC-1A or American

Welding Society Welding Inspection certification.The names, qualifications and experience of the personnel whom the inspection contractor proposes to employ must be approved by the company in writing before movement to site. Any subsequent change in persons must be agreed by the company in writing and shall be at the inspection contractor’s expenses. The number of personnel and equipment may be varied by the company according to the work load.

2. Test equipment is prepared in accordance with standard operating procedures.3. Ultrasonic tests are carried out in accordance with relevant standards and OH&S

requirements.4. Ultrasonic equipment used for inspection of pipelines and pressure vessels shall

be calibrated in accordance with ASME Section V latest edition. The calibration shall be performed at following intervals if more than one shift is required:

a. At the beginning of each normal inspection shiftb. At least once during each inspection shift.c. Every time the running of the systems creates uncertainty on its

efficiency.5. Equipment(s) belonging to the contractor shall be used for one-off spot checks or

grid checks over areas where an indication was observed in conjunction with the equipments specifically loaned to him by Petrojam Limited for data logging purposes.

6. Where it is observed that the Ultrasonic data collected is considered erroneous, the Contractor shall be required to redo same at no cost to the Owner.


7. The contractor shall submit the inspection/test reports in duplicate indicating summary of recommendations including the condition of old/existing coating.

8. The contractor shall be responsible for the daily removal of all materials (finished couplant tubes, oil containers, waste cloth, tools etc.) upon completion of Inspection.

9. If the contractor needs to arrange over-time hours, he must take this into consideration when preparing his quotation and schedule. Petrojam Limited must authorize over-time prior to doing any over-time work.

10. Inspection areas as well as the general surface area shall be visually assessed for the extent of corrosion, obvious irregularities or discontinuities.

11. In the case of any difference or discrepancy between the specifications and the description in the schedule of quantities, the schedule of quantities shall take precedence. In the case of any difference or discrepancy between specifications and sketches, the specifications shall take precedence.

12. It will be the responsibility of the contractor to acquaint his employees with Petrojam’s safety instructions and ensure that they adhere to said instructions.

13. If the contractor needs to arrange over-time hours, he must take this into consideration when preparing his quotation and schedule. Petrojam Limited must authorize over-time prior to doing any over-time work.

14. A signed WORK permit shall be issued by the Project manager and must be received by the contractor prior to the commencement of any working procedure.

15. All contractors’ employees shall be issued identification badges by Petrojam Limited. All contractors and contractors’ employees must have their identification badges attached to their outer garment in a prominent position, so that they can be easily identified.

16. Sanitary conveniences are available at the Owner’s premises. The contractor will make his own arrangements on site for drinking water for his workers.

17. The contractor will make his own arrangements for meals for his workers. Canteen facilities are available on the Owner’s premises on weekdays between the hours 7:30 a.m. and 1:00 p.m.

18. The contractor may use the Owner’s portable drinking water and firewater, but connections will be done by him with the Owner’s approval.

19. The rates include mobilization/ demobilization, technical staff, Vehicle with Driver and any other expenditure required to be incurred for the purpose.

20. The payment shall be made as per actual work done at site and verified by the Refinery Inspector and Reliability Supervisor.


3. SPECIFICATIONS

This specification covers provision of detail inspection services by the inspection contractor including the personnel and equipment scheduled herein together with adequate equipment to control and inspect by visual means conforming to standards governed by the following codes.

1. ASME Section V – Non Destructive Examination.2. ASME Section VIII – Pressure Vessel.3. API Std. 1163 – Standard for In-line Inspection Systems Qualification Standard.4. API RP 576 – Recommended Practice for Inspection of Pressure-relieving

Devices.5. API 510 – Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair,

and Alteration.6. API 570 – Piping Inspection Code: Inspection, Repair, Alteration, and Rerating

of In-service Piping Systems.

7. API RP 572 – Recommended Practice for Inspection of Pressure Vessels.8. API RP 574 – Recommended Practice for Inspection Practices for Piping System

Components.9. API RP 520 – 10. API RP 607 – Shut-off valves and emergency valves for LPG drums.11. API RP 1109 – Recommended Practice for Marking Liquid Petroleum Pipeline

Facilities.12. Any applicable government regulations.

The Contractor, by executing the scope of work, acknowledges that he is aware of and familiar with the contents and requirements of the following standards, codes and regulations and, that he alone is responsible for performance of the work in strict conformance therewith and for every instance of failure to comply therewith. Where conflict among requirements or with specifications exists, the more stringent will apply.

4. MATERIALS AND EQUIPMENT

Owner Supplied

Fire water Manlift and Scaffolding Ultrasonic Thickness gauge (data logger)

Contractor Supplied


All materials and equipment not listed as Owner Supplied to include but not limited to the following:

Inspection equipments. Measuring Tape. Safety equipment for all his workmen. Transportation. Ultrasonic Thickness gauge with through-paint and data logging capabilities. Half round File Wire brush Grinder, grinding discs and other hand tools Couplant Pit Gauge

− NOTES

1. The inspection work on the Refinery LPG Tank Farm will be done while the vessels are in-service.

2. The work site must be maintained in a clean, tidy and orderly condition during the Inspection process.

3. After completion of the inspection, the work site must be left free from debris and clean.

4. The contractor will be totally responsible, at all times, for the safety and warehousing of his equipment, materials and any of the Owner’s materials entrusted to him.

5. Petrojam Limited will not be held liable for loss or theft of any equipment and/or materials suffered by the contractor.

6. At the end of the project, the contractor MUST clean the work site to the satisfaction of Petrojam’s Project Manager.

7. The workforce shall be comprised of skilled workmen, capable of conducting work related activities under minimum supervision.


lpg tank farm inspection services

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