Any insurance carrier writing workers' compensation insurance under the provisions of the Texas Workers' Compensation Act who, on the average, shall fail to make compensation payments due claimants within a reasonable length of time after the same become due and payable, but in no event later than 30 days on the average from the date of incapacity, shall be subject to appropriate sanctions to be invoked by the Texas Industrial Accident Board (1970) (Rev. 1973).