The Carlisle Mosquito Online

Friday, November 17, 2006


Asbestos to be removed from Carlisle School boiler

A minute piece of asbestos found between gaskets inside the school's old boiler is enough to require the heating system to be dismantled by a professional hazardous material contractor. Installation of the new boiler system will be delayed by several weeks as a licensed subcontractor is hired to contain the area around the boiler with polyethylene, remove the asbestos and dismantle the system.

The hazardous material was discovered when the school called in an industrial hygienist from Envirotest Lab of Westwood to inspect the system before disassembling the boiler.

The boiler being replaced has been at the school since 1969. Asbestos was previously removed from the boiler twenty years ago before the Corey Building expansion. Widely used in the past for insulating heating boilers and pipes, both commercially and in residences, existing asbestos is not hazardous if it is left undisturbed, says Building and Grounds Supervisor David Flannery.

There are no safety or health concerns, says Flannery, as the material is not potentially hazardous until it is disturbed when the boiler is removed. High micron air filters will be used in the containment area during system dismantling, and air sampling will be done before, during and after the job which is expected to be finished by the end of the month. The two boilers for the school's forced hot water system are located in the Wilkins Building basement, at the front of the building near the main office.

The state will monitor the removal procedures as required by law. Though the process will delay the new boiler and additional contractor costs, as yet unknown, will be added to the project, the school says safety is the main concern.

The new heating system, approved by voters last spring, will operate with one new high-efficiency boiler and one conventional hot water boiler. It is expected to significantly reduce energy costs.

2006 The Carlisle Mosquito