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CMC Asbestos Surveys: Asbestos Glossary - P

Latest Asbestos News

HSL investigation refutes asbestos claims over safe cement

The Health and Safety Laboratory (HSL) have investigated claims that chrysotile in asbestos cement changes into a non-asbestos fibrous material called Casitile. The claims also suggested that this process is 100% efficient and no chrysotile asbestos remains in the matrix and no release of airborne chrysotile fibres can occur.

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Peritoneal Mesothelioma
Cancer caused by inhaled asbestos fibres that affects the membrane lining the abdomen.

The lining between your bowel and the abdominal and pelvic cavity

Personal Protection
Notification and instruction of all workers prior to the beginning of a project as to the hazards associated with the job and what they can do to protect themselves from these hazards.

Personal Sample
An air sample taken with the sampling pump directly attached to the worker with the collecting filter placed in the worker's breathing zone.

Plan of Works
The plan by which the licensed asbestos removal contractor will set out the transit routes, location of skip, enclosure, location of Negative Pressure Unit etc.

Planned Renovation Operations
A renovation operation, or a number of such operations, in which some RACM will be removed or stripped within a given period of time and that can be predicted. Individual nonscheduled operations are included if a number of such operations can be predicted to occur during a given period of time based on operating experience.

A thin, transparent double membrane that covers the lungs and lines the inside of the chest walls. There are two layers of this membrane. The inner (visceral) layer of the pleura is attached to the lungs and the outer (parietal) layer is attached to the chest wall. The pleural membranes prevent the lung from making direct contact with the chest wall and the diaphragm. Also referred to as the "serous coat"

Pleural Cavity
The closed space within the chest walls that houses the lungs.

Pleural Effusion
Abnormal collection of fluid in the pleural space between the lung and the chest wall.

Pleural Mesothelioma
Cancer caused by inhaled asbestos fibres that affects the membrane lining the lungs and chest cavity.

Pleural Plaques
Even superficial contact with asbestos can cause Pleural plaques, which are inflamed and scarred areas of the lung lining. Sometimes this will be asymptomatic, although in severe cases, they will cause pain, difficulty in breathing and anxiety.

Polarized Light Microscopy (PLM)
An optical microscopic technique used to distinguish between different types of asbestos fibres by their shape and unique optical properties.

Refers to caution or warning signs which should be posted in any area in which asbestos removal is taking place, or where airborne fiber levels may present a health hazard.

Potential Damage
Circumstances under which friable Asbestos Containing Building Materials (ACBM) is in an area regularly used by building occupants, including maintenance personnel, in the course of their normal activities. Or where there are indications that there is a reasonable likelihood that the material or its covering will become damaged, deteriorated, or delaminated due to factors such as changes in building use, changes in operations and maintenance practices, changes in occupancy, or recurrent damage.

Potential Significant Damage
A potential damage scenario in which the asbestos is subject to major or continuing disturbance, due to factors including, but not limited to accessibility or, under certain circumstances, vibration or air erosion.

Personal Protective Equipment worn to protect a worker from exposure to, or contact with, any harmful material or force. Such as overalls, masks, gloves etc.

Preventive Measures
Actions taken to reduce disturbance of ACBM or otherwise eliminate the reasonable likelihood of the asbestos material becoming damaged or significantly damaged.

Protective Clothing
Protective, lightweight garments worn by workers performing asbestos abatement to keep gross contamination off the body.

Pulmonary Function Tests
A part of the medical examination required to determine the health status of a person's lungs.

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