Environment check The control of the ambient conditions is particularly referred to following steps of the lining cycle: blasting application of adhesives application of lining This control has a general validity and is intended as referred also to repairs and to any treatment involving blasting or grinding of surfaces to be lined, or the use of adhesives. The checks must be performed at least once a day, particularly on the morning and before start of lining operations. In case of changing of weather conditions further checks must be made. In case the conditions are not satisfied, the working area must be conditioned, by means of heating and/or dehumidifying equipment, or suitable measures must be taken in order to reach the correct operating conditions; otherwise the procedures can not start, until the request ambient conditions are not satisfied.