Transco operates their round-the-clock 365-days-a-year emergency service for gas escapes. They will stop an escape in the home or in the street free of charge. If you need a Transco engineer at your property, the engineer will carry out a soundness test at the meter to establish whether there is an escape on the customer side of the emergency control valve. This done, the engineer will inspect gas appliances and installations in the property, evaluating if there is any immediate danger, whether there is an "At Risk" situation, a "concern for safety" or whether the property is safe.