HPA's Mission

HPA (S) Pte Ltd offers a Catalyst Dense Loading method called Hydropac loading. Designed by Chevron & modified by HPA, Hydropac technology allows the sprinkling of catalyst in a continually uniform pattern at a rate slow enough to let each particle settle, but fast enough for acceptable loading time.

There are several dense loading technologies on the market but few, if any, that can match the Hydropac in design.

Using the right catalyst dense loading method is critical to the run and life of a catalyst bed.

Our Technicians having worked all over the globe accumulating knowledge of different design reactors & Refinery Safety permit systems. Safely completing major Turnarounds ahead of schedule, on Hydrocrackers, CCR, HDS and Ammonia Convertors to name a few of the more specialised units.


Vac-Tech Engineering Pte Ltd Reactor Division has been awarded the following accreditations:

SCC - Safety, Health and Environment Checklist Contractor
ISO 14001 - Comprehensive Environment Management System
OSHA 18001 - Compliant Occupational Health and Safety Management System