Tas Part H115 Premises for production or processing of isocyanates
Tas H115.1 Application of Part
This Part is applicable to every building in which isocyanate production or processing is undertaken.
Premises for the production or processing of isocyanates must—
provide for the safety and comfort of workers; and
be constructed in a manner that will avoid the spread of fire within the building and to other buildings.
Tas H115.2 Areas of work places
Work places in which an isocyanate industry is carried on must be divided into the following divisional areas:
Administration and staff amenities.
Raw materials plant.
Tas H115.3 Separation from other areas and buildings
separated from each of the other divisional areas by means of an impervious wall with an FRL not less than 120/120/120; or
separated from all other buildings by a clear space of not less than 6 m.
Notwithstanding the distance requirements of (a), bulk stores of polyols and bulk stores of isocyanates must comply with the requirements of the Work Health and Safety Act.
Tas H115.4 Rise in storeys
The building must be of single storey construction.
Tas H115.5 Maximum floor areas
Tas H115.6 Required exits
Every building or divisional area of a work place must have not less than 2 exits for escape purposes.
Tas H115.7 Bulk stores for polyols and isocyanates
A bulk store for polyols must be constructed from non-combustible materials and have a smooth impervious concrete floor and it must protect the polyols from direct exposure to the sun's radiation.
A bulk store for isocyanates must—
be constructed from non-combustible materials, have a smooth impervious concrete floor, and must protect the isocyanate containers from direct exposure to the sun; and
if it is used for storage of either TDI or HDI and is not an open sided building, be fitted with mechanical ventilation so that the TLV is not exceeded at any time provided that the ventilation must provide not less than 6 air changes per hour.
The area around both a polyol bulk store and an isocyanate bulk store must be bunded, the bund or bunds must ensure separation of the polyol and isocyanate areas and each bund must have a capacity of 10% more than the storage capacity of the largest tank it protects.