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Historic Preservation - Technical Procedures

Spectitle:

Cleaning Ornamental Bronze Light Fixtures

Procedure code:

1651003R

Source:

National Capitol Region Specifications

Division:

Electrical

Section:

Lighting Fixtures

Last Modified:

02/24/2012

Details:

Cleaning Ornamental Bronze Light Fixtures



CLEANING ORNAMENTAL BRONZE LIGHT FIXTURES


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on cleaning existing
         interior ornamental bronze lighting fixtures.

    B.   See 01100-07-S for general project guidelines to be
         reviewed along with this procedure.  These guidelines
         cover the following sections:

         1.   Safety Precautions

         2.   Historic Structures Precautions

         3.   Submittals

         4.   Quality Assurance

         5.   Delivery, Storage and Handling

         6.   Project/Site Conditions

         7.   Sequencing and Scheduling

         8.   General Protection (Surface and Surrounding)

         These guidelines should be reviewed prior to performing
         this procedure and should be followed, when applicable,
         along with recommendations from the Regional Historic
         Preservation Officer (RHPO).


PART 2---PRODUCTS

2.01 MATERIALS

    A.   Mild Soap:  Ivory or a mild detergent with pH of
         approximately 8.0.

    B.   Cloth:  Clean cotton waste.

    C.   Clean, potable water.


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   Erect a stable working platform, which will allow easy
         access to all elements of the lighting fixture and its
         hangers.  Support fixture so that no additional pressure
         will be placed on its hangers during the cleaning
         operation.

    B.   Remove all bulbs and removable glass elements.  Clean
         with a mild soap and water.  Rinse and dry thoroughly.

    C.   Clean glass elements which cannot be safely removed
         inside and out.  Using a small nozzle, carefully vacuum
         dirt from the inside of the fixture and wash the glass
         with a mild soap and water, rinse thoroughly with clear
         water and dry with a clean, soft cloth.

    D.   Cleaning Metal Framework and Hangers:  Wash, clean and
         oil all the bronze elements of the fixture.  For guidance
         on cleaning, oiling, polishing, and patinating, see
         05010-01-R and 05010-22-R.

                         END OF SECTION