PAINTING AND PROTECTIVE COATING - Revision history

Juma: /* Paint Thickness and Continuity */

2022-07-21T13:28:38Z

Paint Thickness and Continuity

Juma: /* PAINTING AND PROTECTIVE COATING */

2022-07-21T12:56:17Z

PAINTING AND PROTECTIVE COATING

Juma: /* Colour Coding */

2022-07-21T11:44:30Z

Colour Coding

Show changes

Juma: /* Submissions */

2022-07-21T11:29:05Z

Submissions

Juma: /* Submissions */

2022-07-21T11:27:47Z

Submissions

Juma: /* Submissions */

2022-07-21T11:16:42Z

Submissions

Juma: /* Submissions */

2022-07-21T11:16:07Z

Submissions

Juma: /* Submissions */

2022-07-21T11:15:35Z

Submissions

Juma: /* Submissions */

2022-07-21T11:15:07Z

Submissions

Juma: /* PAINTING AND PROTECTIVE COATING */

2022-07-21T11:09:49Z

PAINTING AND PROTECTIVE COATING

@@ Line 74: / Line 74: @@
 Gauges, instruments and meters shall be maintained in an accurate working condition and shall be made available to the Engineer for checking when requested.
 The following instruments, with the manufacturer's operating instructions, shall be provided, maintained and used by the Contractor's inspector.  In addition, under the Contract a separate set shall be provided and maintained for the Engineer's sole use for the duration of the Contract:<br>
-•	1 adhesion tester, cover 0 to 280 kg/cm2;<br>
+•	1 adhesion tester, cover 0 to 280 kg/cm<sup>2</sup>;<br>
 •	1 DC high voltage holiday detector, 20 kV, with rechargeable batteries;v
 •	1 paint inspection gauge, 0 to 500 microns;<br>
@@ Line 85: / Line 85: @@
 •	surface profile gauge, up to 150 microns.<br>
 Daily checks shall be carried out and recorded on site in accordance with the provisions of DIN 55928.
 ==Dry Film Thickness==
 References in the Specification to dry film thickness (DFT) shall mean the minimum dry film thickness measured with a suitable instrument, either of individual coats, or the total system, as specified in microns (um). The maximum permissible coat tolerance shall be + 15 %, - 0 % over the DFT.

@@ Line 1: / Line 1: @@
-=PAINTING AND PROTECTIVE COATING=
+=Painting and protective coating=
 ==General==
 This Specification covers the general requirements and standards of workmanship and the painting and protective coatings required to be carried out by the Contractor of the works, except where particularly redefined in individual specification clauses or as necessary due to a particularly corrosive local environment, the possible reaction of escaping chlorine on the works or on the structures or the reaction of chlorine residuals on phenolic paints (e.g. inside pipelines), harmful or toxic paint in contact with process liquids, or other special requirements, in which case the Contractor submit his own special specification along with his tender.
@@ Line 204: / Line 205: @@
 ==Final Treatment of Wood, Plaster, etc==
 The final painting system required in the works is given in Table 5 in Annex to the General Specifications, and is presented to tenderers for guidance to include such work in their supply under this Contract.

@@ Line 8: / Line 8: @@
 The Contractor shall, within 3 months of the date of acceptance of tender, deliver to the Engineer for approval triplicate copies of a comprehensive submission (in English) with samples, certification and data regarding the final materials, sources, manufacturer's instructions, methods of application, etc., which are specified or which he proposes finally to adopt to protect the works.<br>
 The samples shall include for all paints:
-* Applied coatings and colours on sample chips;<br>
+*Applied coatings and colours on sample chips;<br>
-* Reference samples of the paint.<br>
+*Reference samples of the paint.<br>
 The certification shall include:
-* The results of taste and odour tests for all coatings proposed or specified for any pipeline, or item of plant or surface which is designed to be or could normally be in contact with or feed into the water being processed1 stored or pumped;<br>
+*The results of taste and odour tests for all coatings proposed or specified for any pipeline, or item of plant or surface which is designed to be or could normally be in contact with or feed into the water being processed1 stored or pumped;<br>
-* The results of meaningful tests on the effects of water and/or any other chemical fluid or gas which the coating is specifically required to protect against, and to which, by nature of the works arrangements, the protected installations may be exposed.<br>
+*The results of meaningful tests on the effects of water and/or any other chemical fluid or gas which the coating is specifically required to protect against, and to which, by nature of the works arrangements, the protected installations may be exposed.<br>
 The data should include:<br>
 * A complete schedule of the protective coating and paint systems;<br>

@@ Line 37: / Line 37: @@
 Prior to the commencement of erection of the works, the Contractor shall submit quadruplicate and English copies of the final approved painting schedule to the Engineer and during the erection, testing and commissioning periods, maintain a copy of the document on site for his own use and shall provide a separate copy for exclusive use by the Engineer.
-.4	Appropriate Standards
+==Appropriate Standards==
 Where no explicit instruction is given standards in the Specification or by the manufacturer concerning any particular aspect of the workmanship, materials or procedures in connection with anti-corrosion protective systems in the works for iron and steel structures, the relevant recommendations of the following standard or code of practice shall apply:
-DIN 50900 			Corrosion of metal
+DIN 50900 			Corrosion of metal<br>
-DIN 50928			Protective coating of iron and steel structures against corrosion
+DIN 50928			Protective coating of iron and steel structures against corrosion<br>
-DIN 18364			Surface protection of steel structures
+DIN 18364			Surface protection of steel structures<br>
-DIN 50976			Hot-dip galvanized coatings on iron and steel articles
+DIN 50976			Hot-dip galvanized coatings on iron and steel articles<br>
-DIN 8565 and DIN 8567 		Sprayed metal coatings
+DIN 8565 and DIN 8567 		Sprayed metal coatings<br>
-.5	Local Conditions
+==Local Conditions==
 All coatings shall be suitable for the long term protection of the plant under operational conditions at the site of installation.  The Contractor's attention is specifically drawn to the extremes of temperature and humidity recorded in the region and he shall take into account possible abrasions, restricted ventilation, and the various potentially corrosive environments within the works buildings and structures.
+==Decorative Finish and Final Appearance==
 The Contractor is advised that internal civil works finishes, furnishings and decorative colour schemes in the main operational areas (e.g. upper filter gallery) should be of a pleasing appearance, coordinated and designed to produce a comfortable working environment.  Accordingly, the Contractor shall allow for consultation with the Engineer regarding the final colour scheme and decoration of the works.
+==Coatings in Contact with Potable Water==
 Water in contact with the dried coatings shall not acquire an unpleasant taste or odour, shall not show the presence of dissolved phenols and shall not acquire more than 5 Hazen units of colour.
+==Trial Areas and Sample Pieces==
 Prior to the commencement of the site, painting work designated area(s) or section(s) of the works shall be completely painted as a sample of the work and workmanship to be carried out.  The area(s) or section(s) shall include complete samples of all the major painting required in the works.
 The area(s) shall be offered for review by the Engineer and shall, upon approval, be then preserved as a reference standard for the work.
 No extra payment will be made for carrying out such protection or decoration in advance of the general work, or for the removal and repetition or improvement of the work if required by the Engineer in order to achieve the specified standard.
+==Precautions, etc.==
 All surface fittings, ironmongery, etc., except hinges shall be removed before painting and refixed on completion.  They shall be entirely free of any droppings, paint smears and blemishes.  Labels, pump and other machinery name plates, data plates, markings, etc., shall not be overpainted but carefully preserved by removal and replacement or by masking.
 The Contractor shall pay particular attention to the toxicity, inflammability and the explosive dangers related to the storage and application of the systems and shall take all precautions necessary to the satisfaction of the Engineer to protect his operatives, the public and other site personnel.
+==Work Succession==
 No one site coat may proceed in any section of the works until the entire section is complete and the Engineer has had notice of completion in order that he may inspect the work and authorize the application of subsequent coats.  Each successive coat shall preferably be of different colour or shade to facilitate inspection.  The Engineer may apply his own identification markings on undercoats to ensure full compliance with the Specification.
+==Application of Protective Coating and Paint System==
 Unless specifically specified elsewhere, the protective systems shall be applied in accordance with the manufacturer’s instructions to the full thickness range specified, particular note being taken of the requirements for the time interval between successive coats of the system.
 The coating thickness for painting on concrete or plaster surfaces shall be in accordance with the manufacturer's instructions or proposals.
+==Equipment and Condition==
 Brushes, tools and equipment shall be kept in a neat and clean condition.  Painting shall not be carried out in the vicinity of other operations, which might cause dust.  The final coat shall be uniform in colour and free from brush marks, runs or other defects.
+==Paint Thickness and Continuity==
 The Contractor shall provide and maintain, during manufacture and on site, gauges and measuring equip¬ment of an approved type to ensure that the specified film thicknesses are achieved, paint holidays are avoided, and adhesion is to the satisfaction of the Engineer.
 Wet film thickness gauges shall be provided to and used by each painter to check the rate of paint application.
@@ Line 80: / Line 72: @@
 The sweep voltage on high voltage DC equipment shall not exceed half the voltage required to spark through the complete paint system specified.
 Gauges, instruments and meters shall be maintained in an accurate working condition and shall be made available to the Engineer for checking when requested.
-The following instruments, with the manufacturer's operating instructions, shall be provided, maintained and used by the Contractor's inspector.  In addition, under the Contract a separate set shall be provided and maintained for the Engineer's sole use for the duration of the Contract:
+The following instruments, with the manufacturer's operating instructions, shall be provided, maintained and used by the Contractor's inspector.  In addition, under the Contract a separate set shall be provided and maintained for the Engineer's sole use for the duration of the Contract:<br>
-•	1 adhesion tester, cover 0 to 280 kg/cm2;
+•	1 adhesion tester, cover 0 to 280 kg/cm2;<br>
-•	1 DC high voltage holiday detector, 20 kV, with rechargeable batteries;
+•	1 DC high voltage holiday detector, 20 kV, with rechargeable batteries;v
-•	1 paint inspection gauge, 0 to 500 microns;
+•	1 paint inspection gauge, 0 to 500 microns;<br>
-•	4 "wet-check" moisture meters with suitable concrete and timber scales;
+•	4 "wet-check" moisture meters with suitable concrete and timber scales;<br>
-•	1 dry film thickness gauge, 0 to 500 microns;
+•	1 dry film thickness gauge, 0 to 500 microns;<br>
-•	4 wet film gauges, up to 500 microns;
+•	4 wet film gauges, up to 500 microns;<br>
-•	1 steel temperature gauge, up to 500C;
+•	1 steel temperature gauge, up to 500C;<br>
-•	1 air humidity gauge;
+•	1 air humidity gauge;<br>
-•	1 air thermometer (maximum and minimum);
+•	1 air thermometer (maximum and minimum);<br>
-•	surface profile gauge, up to 150 microns.
+•	surface profile gauge, up to 150 microns.<br>
 Daily checks shall be carried out and recorded on site in accordance with the provisions of DIN 55928.
+==Dry Film Thickness==
 References in the Specification to dry film thickness (DFT) shall mean the minimum dry film thickness measured with a suitable instrument, either of individual coats, or the total system, as specified in microns (um). The maximum permissible coat tolerance shall be + 15 %, - 0 % over the DFT.
+==Colour Coding==
 Pipework, tanks and ducting shall be colour coded by totally painting with the appropriate code colour as specified.
 The principal code colours shall be as follows:

@@ Line 7: / Line 7: @@
 ==Submissions==
 The Contractor shall, within 3 months of the date of acceptance of tender, deliver to the Engineer for approval triplicate copies of a comprehensive submission (in English) with samples, certification and data regarding the final materials, sources, manufacturer's instructions, methods of application, etc., which are specified or which he proposes finally to adopt to protect the works.<br>
-The samples shall include for all paints:<br>
+The samples shall include for all paints:
 * Applied coatings and colours on sample chips;<br>
 * Reference samples of the paint.<br>

@@ Line 8: / Line 8: @@
 The Contractor shall, within 3 months of the date of acceptance of tender, deliver to the Engineer for approval triplicate copies of a comprehensive submission (in English) with samples, certification and data regarding the final materials, sources, manufacturer's instructions, methods of application, etc., which are specified or which he proposes finally to adopt to protect the works.
 The samples shall include for all paints:<br>
-*Applied coatings and colours on sample chips;
+* Applied coatings and colours on sample chips;<br>
-*Reference samples of the paint.
+* Reference samples of the paint.<br>
-The certification shall include:
+The certification shall include:<br>
-•	The results of taste and odour tests for all coatings proposed or specified for any pipeline, or item of plant or surface which is designed to be or could normally be in contact with or feed into the water being processed1 stored or pumped;
+* The results of taste and odour tests for all coatings proposed or specified for any pipeline, or item of plant or surface which is designed to be or could normally be in contact with or feed into the water being processed1 stored or pumped;<br>
-•	The results of meaningful tests on the effects of water and/or any other chemical fluid or gas which the coating is specifically required to protect against, and to which, by nature of the works arrangements, the protected installations may be exposed.
+* The results of meaningful tests on the effects of water and/or any other chemical fluid or gas which the coating is specifically required to protect against, and to which, by nature of the works arrangements, the protected installations may be exposed.<br>
+The data should include:<br>
-The data should include:
+* A complete schedule of the protective coating and paint systems;<br>
-•	A complete schedule of the protective coating and paint systems;
+* Colour charts for finishing coats (including the system colour notation);<br>
-•	Colour charts for finishing coats (including the system colour notation);
+* Manufacturer's product data on the protective treatment, coatings and paint systems;<br>
-•	Manufacturer's product data on the protective treatment, coatings and paint systems;
+* Manufacturer's preparation and application instructions;<br>
-•	Manufacturer's preparation and application instructions;
+* Method of application.<br><br
-•	Method of application.
+The schedule required with the submission shall contain the following information, in detail:<br>
-The schedule required with the submission shall contain the following information, in detail:
+Item;<br>
-•	Item;
+* Environment of item;<br>
-•	Environment of item;
+* Type of surface;<br>
-•	Type of surface;
+* Surface preparation;<br>
-•	Surface preparation;
+* Protective or paint system to be applied;<br>
-•	Protective or paint system to be applied;
+* Name of coating manufacturer;<br>
-•	Name of coating manufacturer;
+* Brand name and reference number for each coat to be used;<br>
-•	Brand name and reference number for each coat to be used;
+* Manufacturer's data sheet for each coat, including the technical description and formulation of paint, and the colour of each paint;<br>
-•	Manufacturer's data sheet for each coat, including the technical description and formulation of paint, and the colour of each paint;
+* Colour of finishing coat stating the system colour notation;<br>
-•	Colour of finishing coat stating the system colour notation;
+* Proposals concerning place of application and detailed method of application of each coat, including information on equipment to be used;<br>
-•	Proposals concerning place of application and detailed method of application of each coat, including information on equipment to be used;
+* Wet film minimum and target thickness for each coat;<br>
-•	Wet film minimum and target thickness for each coat;
+* Dry film minimum and target thickness for each coat;<br>
-•	Dry film minimum and target thickness for each coat;
+* Density of paint for each coat and coverage of paint per unit volume including volume solids.<br>
 The work detailed on the painting schedule shall meet the requirements of the Specifications.