The Maharashtra Economiser Rules, 1965State Rules of Maharashtra · 1923
(1) No pressure parts in a cast iron from economiser shall be permitted to be repaired by welding.
(2) Casting shall not be repaired or welded without the specific sanction of the Inspecting Officer. If required, the castings shall be suitably reheat-treated to remove internal stresses. Should a defect impair the strength of the casting, repair by welding or otherwise shall not be permitted.