protecting archives 1
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PROTECTING ARCHIVES
Jehn Marie A. Simon BLIS-3
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WHAT IS PRESERVATION?
Many people equate preservation with
conservation and restoration
PRESERVATION is used to describe the
passive protection of archival materials
in which no physical or chemical
treatment is performed
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CONSERVATION can be defined as the
active protection of archival materials , often
by the use of physical and chemical
treatments in order to resist further
deterioration but without adversely affecting
the integrity of the original.
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RESTORATION involves the repair of an
item, either to return it to its original
appearance or to improve its aesthetic
qualities.
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Understanding and Responding to arch iva l hazards
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TEMPERATURE AND RELATIVE HUMIDITY
temperature: level of heat or cold in a
substance
relative humidity: amount of water vapor in
the air
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WHAT IS THE RISKS?
High in relative humidity promotes the growth of
mold and causes archives to absorb moisture and
swell, deforming their shapes permanently
Low in relative humidity dries archival materials,
leaving them brittle
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The greatest danger is not the levels of
temperature and humidity but excessive
fluctuations(changes)
as the level rise and fall, materials expand,
shrink and expand again
making the bond that hold the material weaken
and be fragile
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WHAT CAN BE DONE?
controlling the temperature and the humidity can
markedly increase the life span of archives even
id the levels are not optimal.
should be monitored and documented: daily if
possible.
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temperature in the storage repository should
not drop below 18°c or rise above 20°c
relative humidity should range from 35% to
40% and should not exceed 50%.
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ABUSE AND MISHANDLING
What is the risks?
putting excessive pressure on bindings,
writings on documents
touching photographs with bare hands eating or drinking near any archives
tearing or folding pages and handling
documents with wet or dirty hands
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poor storage and inadequate housekeeping are
also serious threats to the quality of collection
vandalism and theft can cause permanent
damage
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WHAT CAN BE DONE?
reference and storage areas should be
supervised, and extra protection should be given
to particularly valuable materials.
the archivist has very right to impose conditions
on the behavior of visitors to the institution.
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the institution can provide space for refreshment
archivists must need to monitor the use of
archives by staff and the public in order to ensure
materials are not damaged and mishandled.
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housekeeping can be extremely effective in stable
and secure physical environment
all archival materials should be inspected at least
once a month to ensure that the records have
been shelved properly and to look for any treats.
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ACIDITY
acidity is the quality of being acid or sour as
supposed to be alkalinity or the quality of being
alkaline or sweet
paper-based textual records are often composed
of materials that are acidic which makes the items
inherently fragile.
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acid can be naturally on the paper, the ink
being used and the cardboard boxes used
to store the items.
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WHAT CAN BE DONE?
testing the PH of paper archives or storage containers is one way to determine acid levels.
testing process is time consuming and expensive
mass deacidification- the chemical reduction of acid in large volumes of archives
increasingly archivists are turning to digitalization as a tool for preservation and access.
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encapsulation- enclosing a document
within a sheet of polyester and sealing
the edges to keep the item in place.
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LIGHTS
speeds up oxidation (the combination of oxygen and other elements)
hastening the deterioration of materials such as paper
Breaks down chemical bonds that causes ink to fade
light levels are defied in lux units: 50-100 lux
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WHAT CAN BE DONE?
reduce the exposure to light as much as possible
archival materials should be stored in boxes or
containers to reduce the exposure to light,
materials should be keep when not in use
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photocopying generates tremendous exposure
to light ad heat. Scanning can also damage the
materials
make a master copies of frequently requested
items and use those to make additional copies
instead of using the original one.
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POLLUTION
what is the risks?
external pollutants: gasesChemicals
toxics from factories, automobiles and trucks
internal pollutants:
found inside the building
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photocopier cleaning supplies paints untreated woods plasticsAdhesivesTap water
the particles that make up pollution is abrasive or acidic abrasive: irritating
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WHAT CAN BE DONE?
install systems that filters out the polluted air
particles
expensive and requires regular
maintenance
not an easy option for many facilities
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storing the archival materials in a box,
containers or cabinets will limit the exposure
to pollutants
untreated wood shelves can be sealed with
a latex paint (not oil base paint)
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photocopier should be located away from the
records storage areas
poor quality holdings such as newspapers
should be kept away from the archival
materials to reduce the effect of pollutants
that can be stored in it.
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FIRE AND WATER
fire is a devastating threat to archives, not
because of all-consuming loses brought by the
fire itself but also because of the damage
caused by the water or chemicals used to
extinguish the flames
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WHAT CAN BE DONE?
To reduce the threat of fire and water damage,
hazardous materials such as chemicals, paints
and other flammable substances should ever be
stores near the records
archival materials should be kept at least 15-25
centimeters off the floor, to minimize damage in
the event of the flooding
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materials should not be stored in the attic or
basement, since those areas are the first to be
damaged in fires and floods
fire alarm and portable fire extinguisher should
be installed throughout the facility and should
be tested regularly
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BIOLOGICAL AGENTS
what is the risks? mold insects and rodents can all damage archives
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WHAT CAN BE DONE?
storing the archives in climate-controlled
environments; keeping relative humidity low, and
inspecting and cleaning storage and reference
regularly
screens should be installed in the doors and
windows to avoid rodents inside the building
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drying damaged records and then vacuum off the mold using a low suction vacuum
dry molds can be cleaned using a soft paintbrush
if moldy archives cannot be salvaged, duplicate either manual or digitally
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DEVELOPING A PRESERVATION PLAN
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CONDUCTING A PRESERVATION SURVEY
the survey will assess conditions such as:
the general condition of the exterior and the
interior of the building
the condition of all the storage facilities
the nature and condition of all archival materials,
in all media(including electronic archives)
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the nature and extent of security systems and
procedures
the nature and level of environmental or other
threats
the existence and nature of emergency
response procedures
the existence and scope of preservation
services and internal or external support
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DRAFTING A PRESERVATION POLICY
a preservation policy articulates the
institution’s goals and priorities for
preservation and conservation
It is important to develop the preservation
policy In keeping with the goal and
strategies of the institution’s core archival
policy;
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all decisions about archival management
from preservation to acquisition to reference
need to work coherently as components of
the plan to achieve the institution’s larger
vision, mission and mandate
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DEVELOPING A PRESERVATION MANAGEMENT PLAN
Once a preservation assessment is completed,
priorities can be identified and formalized in a
preservation management plan
without a plan, managers may ask why they
should provide for
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6 GENERAL ACTIONS RECOMMENDED BY CONSERVATION EXPERTS:
establish a regular environment monitoring program
implement and maintain stable environmental controls
develop and maintain an emergency response plan
store archival materials according to the requirements of their particular medium
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maintain a regular and thorough housekeeping
program
identify and treat high-risk materials
items 1,2,4,5- environmental monitoring,
implementing environmental controls, general
storage requirements and housekeeping
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EMERGENCY PLANNING
emergency- any unexpected occurrence requiring immediate action
Example:
losing electrical power in an archival building especially when the staff is in the middle of updating databases or they have transferred irreplaceable photographs to cold storage freezers.
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emergency response plan identifies potential emergencies and categorizes their potential danger to the institution and its holdings
the plan outlines the procedures to follow during and after an emergency to protect people and holdings, restore order and salvage damaged materials.
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ELEMENTS OF A COMPREHENSIVE EMERGENCY PLAN
detailed evacuation procedures including information about emergency meeting points as well as maps and diagram
floor plans for the building, identifying the locations of power and water supplies, drains, emergency exits and other critical areas
full contact information for all the staff who may need to be involved in emergency response, including information about who will be responsible for making decisions and authorizing actions
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contact information for any organizations or suppliers who have agreed to provide emergency support, such as companies that will provide salvage service
identification and location of particularly valuable or fragile items or materials that need to be given high priority during recovery operations
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a list of emergency equipment and materials held in the institution with their locations clearly marked
the archival institution should also maintain insurance to cover loses i the event of an emergency
the insurance cannot replace the lose of archives but can in terms of equipment and supplies
the institution will also want to have a liability insurance, in the event anyone is injured on the premises
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STORING MEDIA MATERIALS
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MAJOR ISSUES ASSOCIATED WITH THE STORAGE OF ARCHIVES IN DIFFERENT MEDIA
document and cartographic records photographic prints and negatives slides and transparencies Photograph albums films: cellulose nitrate film books and other publications parchment
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Vellum and seals Newspapers Work of art and framed items Audio recordings Microforms Artefacts
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PAPER RECORDS
Correspondence Reports Minutes Cartographic Architectural records and textual materials
are often acidic, and as the paper ages, the acidity weakens the fiber
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PHOTOGRAPHIC PRINTS
Consists of two layers:
provides the support
holds the images
support layer is usually made of paper but may also be made of glass, metal or other materials;
the image layer is made up of a variety of chemicals
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Black and white photographs are more stable than the color photographs
black and white photographic image consist of silver, embedded in a binder called emulsion layer
color photographic image composed of a number of organic dyes embedded in layers of gelatin
photographic prints can be damaged by ultraviolet light, pollutants and dust
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Color photographs are more sensitive to change in light, temperature and humidity
photographic prints are best stores in total darkness
50 lux is acceptable for exhibitions house them in a stable temperature and
relative humidity temp. :20 degree Celsius r. humidity: 30-35% for black and white
25-30% color photographs
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Oil in fingers will damage the photographic prints should be handled with gloves at all time
should not be folded, bent or attach with paper clips or staples
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PHOTOGRAPHIC NEGATIVES, SLIDES AND TRANSPARENCIES
Like photographic prints, negatives are made up of support layer and an image layer support: polyester, cellulose acetate or
cellulose nitrate film image:
black and white negatives contains silver particles in gelatin
color negatives also contains silver but the particles may have been bleached during development adding acid makes it less stable
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Slides consist of support and layer image
negatives and slides can be damaged by light and heat; chemicals and pollutants; and high temperatures and humidity
negatives should be stores in a place with little exposure to light (20°c)
Photographic negatives should be handled by the edges only with bare fingers