SACRAMENTO -- The Cal/OSH Standards Board granted two variances at its Dec. 18, 2003, meeting.Valero Refining Co., Benicia: Permanent variance from Boiler and Fired Pressure Vessel Safety Orders 770(b), increasing the maximum allowable internal inspection interval to 63 months for an unfired boiler at the refinery.The safety order is intended to prevent a catastrophic failure due to metallurgic deterioration from overheating and normal wear and tear. Under 770(b), the maximum interval between in
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