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                                                                   EXHIBIT 99.12







                            TCR HOLDING CORPORATION,
                             A DELAWARE CORPORATION



                          SECURITY AND PLEDGE AGREEMENT

                                       BY

                            TCR HOLDING CORPORATION,
                             A DELAWARE CORPORATION

                                   IN FAVOR OF

                        TRANSAMERICAN ENERGY CORPORATION,
                             A DELAWARE CORPORATION




                         DATED AS OF DECEMBER ___, 1998



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                             TCR HOLDING CORPORATION
                            (A DELAWARE CORPORATION)

                          SECURITY AND PLEDGE AGREEMENT

        This Security and Pledge Agreement (this "Agreement") is made and
entered into as of December ___, 1998, by TCR Holding Corporation, a Delaware
corporation (the "Company"), in favor of TransAmerican Energy Corporation, a
Delaware corporation (the "Lender").


                                    RECITALS

        WHEREAS, TransAmerican Refining Corporation, a Texas corporation
("TARC") has executed and delivered to the Lender its Promissory Note dated
October 1, 1998, payable to the order of the Lender in the stated principal
amount of $50,000,000 (the "TARC Working Capital Note"), to evidence advances
made from time to time by the Lender to TARC as provided in the TARC Working
Capital Note; and

        WHEREAS, the outstanding principal balance of the TARC Working Capital
Note on the date hereof is $_________________________, and accrued but unpaid
interest on the TARC Working Capital Note on the date hereof is
$_________________________; and

        WHEREAS, as part of the consideration for the transfer of certain assets
of TARC by TARC to the Company, and pursuant to an Assignment and Assumption
Agreement (TARC Working Capital Note) of even date herewith, TARC assigned all
of its rights, titles, and interests in the TARC Working Capital Note to the
Company, and the Company assumed the payment and performance of all of the
indebtedness and obligations of the "Maker" under the TARC Working Capital Note
(the "Assignment and Assumption"); and

        WHEREAS, in order to induce the Lender to consent to the Assignment and
Assumption and to secure the payment and performance in full of the obligations
of the Company under the TARC Working Capital Note by reason of the Assignment
and Assumption, the parties hereto desire to set forth their mutual
understanding and certain agreements regarding the terms and conditions of the
grant of a security interest in the Pledged Collateral (as defined below);

        NOW, THEREFORE, in consideration of, and for the purposes set forth in,
the premises and for the good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Company and the Lender hereby
agree as follows:

        Section 1. Definitions.

               (a) As used in this Agreement, capitalized terms not otherwise
        defined herein have the meanings set forth in the TARC Working Capital
        Note or, if not defined therein, the meanings set forth in the TEC
        Indenture (hereinafter defined), and the following terms shall have the
        respective meanings set forth below (such meanings to be equally
        applicable to both the singular and plural forms of the terms defined):

               "Default" and "Event of Default" shall have the meanings assigned
        to those terms in Section 7(a) of this Agreement.



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               "GAAP" means generally accepted accounting principles of the
        United States of America, consistently applied.

               "Indebtedness" means the following indebtedness and liabilities
        of the Company (and any extensions, renewals, refunding, increases,
        substitutions, replacements, consolidations, modifications or
        rearrangements of such indebtedness and liabilities, regardless of
        whether the Company executes any extension agreement or renewal
        instrument):

                      (i) all amounts advanced or expended by the Lender under
               the TARC Working Capital Note and/or under or in connection with
               this Agreement, all reasonable costs and out-of-pocket expenses
               (excluding expenses representing administrative overhead) at any
               time and from time to time incurred by the Lender in connection
               with the administration and/or enforcement of this Agreement
               (including, without limitation, the reasonable fees and
               out-of-pocket expenses of counsel employed by the Lender in
               connection therewith), and all indemnities at any time and from
               time to time payable hereunder to the Lender, and

                   (ii) all principal, premium and accrued interest owing on the
               TARC Working Capital Note, and

                   (iii) all other amounts payable by the Company under the TARC
               Working Capital Note.

               "Obligations" shall have the meaning assigned to that term in
        Section 2 of this Agreement.

               "Offering Circular" means the offering circular dated December
        ___, 1998, pursuant to which $150,000,000 in aggregate principal amount
        of the 15% Senior Secured Notes due 2003 of TransAmerican Refining
        Corporation, a Texas corporation, were issued.

               "Pledged Collateral" shall have the meaning assigned to that term
        in Section 2 of this Agreement.

               "Perfection Certificate" means the certificate delivered to the
        Lenders substantially in the form of EXHIBIT A hereto.

               "TEC Indenture" means the Indenture dated as of June 13, 1997
between TEC and the TEC Indenture Trustee, pursuant to which TEC's 11.5% Senior
Secured Notes due 2002 and 13% Senior Secured Discount Notes due 2002 were
issued, as supplemented by First Supplemental Indenture dated as of December 30,
1997, by Second Supplemental Indenture dated as of November 13, 1998, and by
Third Supplemental Indenture dated as of December ___, 1998.

               "TEC Indenture Trustee" means Firstar Bank of Minnesota, N.A., as
Trustee under the TEC Indenture, and its successors and assigns in such
capacity.

               "TransContinental" means TransContinental Refining Corporation, a
Delaware corporation.




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               "TransContinental Common Stock" means the common stock, par value
        $.01 per share, of TransContinental.

               "TransContinental Preferred Stock" shall have the meaning
        assigned to that term in the Offering Circular.

               "TransContinental Stockholders Agreement" means the Stockholders
        Agreement (TransContinental) dated as of December ___, 1998, among
        TransContinental, the Company, and the holders of the TransContinental
        Preferred Stock..

               "UCC" means the Uniform Commercial Code as in effect in the State
        of New York.

               (b) All terms used in this Agreement which are defined in the
        UCC, other than those which are defined in the TEC Indenture or
        specifically defined in Section 1(a) above, shall have the same meaning
        herein as in the UCC.

        Section 2. Grant of Security Interest.

               (a) The Company hereby pledges to the Lender, and grants to the
        Lender a security interest in all of the Company's right, title and
        interest in, to and under any and all of the following described
        property, rights and interests, in each case, wherever located, whether
        now owned or hereafter acquired or arising, all accessions and additions
        thereto, all substitutions and replacements therefor, and all proceeds
        and products thereof (collectively, the "Pledged Collateral"):

                   (i) all of the issued and outstanding shares of the
               TransContinental Common Stock identified on Schedule 2(a)
               attached hereto; and

                   (ii) all proceeds and products of the foregoing and
               distributions thereof or with respect thereto, including without
               limitation dividends, distributions, cash, instruments and other
               property or securities, now or hereafter at any time or from time
               to time received or receivable or otherwise distributed or
               distributable in respect of or in exchange for any or all of the
               foregoing.

               (b) The inclusion of proceeds in this Agreement does not
        authorize the Company to sell, dispose of or otherwise use the Pledged
        Collateral in any manner not specifically authorized hereby or under the
        TEC Indenture.

               (c) This Agreement secures the prompt and complete (i) payment of
        all obligations of the Company to the Lender under the TARC Working
        Capital Note, whether such obligations are now existing or hereafter
        arising, and all renewals, extensions, amendments, supplements and
        rearrangements thereof and (ii) payment and performance and all
        representations, covenants and conditions by the Company contained or
        incorporated herein, in each case whether for principal, interest,
        prepayment premium, taxes, costs, losses, compensation, reimbursements,
        fees, expenses or any other amount payable to the Lender under the terms
        of this Agreement (all such obligations, covenants and conditions
        described in the foregoing clauses (i) and (ii) being hereinafter
        collectively referred to as the "Obligations").





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        Section 3. Representations and Warranties. The Company represents and
warrants, as of the date hereof, to the Lender as follows:

               (a) The chief executive office and principal place of business of
        the Company is located at 1300 N. Sam Houston Parkway East, Suite 320,
        Houston, Harris County, Texas 77032. Any and all Pledged Collateral not
        delivered to the Lender or its designated agent is and will continue to
        be located only in the States of Texas and Louisiana.

               (b) The Company is the legal and beneficial owner of all of the
        Pledged Collateral free and clear of any lien, security interest, charge
        or encumbrance of any kind or nature, except for the lien and security
        interest created hereby and for Permitted Liens, and has not made any
        other pledge, assignment, mortgage, hypothecation or transfer of the
        Pledged Collateral except as permitted hereunder. Except for the lien
        and security interest created hereby, all of the Pledged Collateral is
        free from any material credit, deduction, allowance, defense, dispute,
        setoff or counterclaim, and there is no material extension or indulgence
        with respect thereto. The Pledged Collateral is not subject to any put,
        call, option or other right in favor of any other person whatsoever.

               (c) The Pledged Collateral is accurately described in Schedule
        2(a) hereto.

               (d) This Agreement has been duly executed and delivered by the
        Company and creates a valid security interest in, and lien on, the
        Pledged Collateral securing the payment of the Obligations. Upon the
        physical delivery of the certificates evidencing the Pledged Collateral
        to the Lender or its designated agent and the making of the filing of a
        financing statement in the Office of the Secretary of State of Texas and
        the taking of all other actions necessary to perfect the security
        interests created hereby, including, without limitation, those actions
        specified in Section 2(a) and Section 4, the security interests created
        by this Agreement will be duly perfected security interests subject to
        no equal or prior lien, security interest or encumbrance of any kind or
        nature other than Permitted Liens.

               (e) The Company has the requisite corporate power and authority
        to pledge the Pledged Collateral in the manner hereby done or
        contemplated and to defend its title thereto against the lawful claims
        of all persons whomsoever.

               (f) Neither the execution and delivery of this Agreement by the
        Company, the performance by the Company of its obligations hereunder,
        nor the transactions herein contemplated will (i) violate the Company's
        charter or bylaws, (ii) violate the terms of any agreement, indenture,
        mortgage, deed of trust, equipment lease, instrument or other document
        to which the Company is a party, (iii) violate any law, order, rule or
        regulation applicable to the Company of any court or any government,
        regulatory body or administrative agency or other governmental body
        having jurisdiction over the Company or its properties, or (iv) result
        in or require the creation or imposition of any lien (other than the
        lien contemplated hereby), upon or with respect to any of the property
        now owned or hereafter acquired by the Company, which violation or
        conflict would have a material adverse effect on the financial
        condition, business, assets or liabilities of the Company or on the
        value of the Pledged Collateral or a material adverse effect on the
        security interests hereunder.





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               (g) The Pledged Collateral includes all of the issued and
        outstanding shares of TransContinental Common Stock owned by the Company
        on the date hereof, which shares are described in Schedule 2(a) attached
        hereto.

               (h) No consent or approval which has not been obtained on or
        prior to the date hereof of any other person or entity and no
        authorization, approval or other action (other than delivery of physical
        certificates evidencing the Pledged Collateral) by, and no notice to or
        filing with any governmental body (other than UCC filings), regulatory
        authority or securities exchange, was or is necessary as a condition to
        the validity of the pledge hereunder of the Pledged Collateral, and such
        pledge is effective to vest in the Lender the rights of the Lender in
        the Pledged Collateral as set forth herein. Except for the limitations
        and restrictions imposed by the TransContinental Stockholders Agreement,
        there are no restrictions on the transferability of any of the Pledged
        Collateral transferred or delivered by the Company hereunder or, except
        for the limitations and restrictions imposed by the TCR Holding
        Stockholders Agreement and restrictions related to federal and state
        securities laws governing the sale of "restricted stock" or "control
        stock," with respect to the foreclosure, transfer or disposition thereof
        by the Lender.

        Section 4. Covenants. During the term of this Agreement and until all of
the Obligations with respect to the Indebtedness have been fully and finally
paid and discharged in full, the Company covenants and agreed with the Lender
that:

               (a) Except in the ordinary course of business, the Company will
        not make any compromise or settlement with respect to the Pledged
        Collateral without notice to or consent of the Lender.

               (b) The Company shall deliver to the Lender or its designated
        agent concurrently with the execution of this Agreement or, to the
        extent acquired subsequent to the date of execution hereof, immediately
        upon the Company's acquisition thereof: (i) all certificates and
        instruments representing the Pledged Collateral and a revised Schedule
        2(a), and (ii) all certificates, instruments and notes representing any
        proceeds of the Pledged Collateral. Any and all Pledged Collateral
        delivered to the Lender or its designated agent in the form of
        certificates, securities, instruments, or documents shall be accompanied
        by undated duly executed powers in blank and by such other instruments
        of transfer or documents as the Lender may reasonably request. The
        Lender may hold the certificates representing the Pledged Collateral
        delivered to it in its own name or in the name of its nominee, all in
        form and substance satisfactory to the Lender.

               (c) From time to time, the Company shall, at its own expense,
        promptly give, execute, deliver, file and/or otherwise formalize any
        such notice, statement, instrument, document, agreement or other papers,
        and do all such other acts and things, as may be necessary or desirable,
        or and as the Lender may reasonably request, in order to create,
        evidence, preserve, perfect, validate or continue any lien or security
        interest created pursuant to this Agreement or to enable the Lender to
        exercise or enforce its rights hereunder with respect to such lien or
        security interest, or otherwise further to effect the purposes of this
        Agreement. Without limiting the generality of the foregoing, the Company
        shall, at any time or from time to time upon the request of the Lender
        and at the Company's own expense, execute, acknowledge, witness,
        deliver, file and/or record such financing and continuation statements,
        notices, additional assignments and other documents or instruments (all
        of which shall be in form and substance reasonably satisfactory to the
        Lender





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        and its counsel) as the Lender may from time to time reasonably request
        for the perfection of the liens and security interests created hereby.

               (d) The Company shall promptly notify the Lender (i) of any
        material changes in any fact or circumstance represented or warranted by
        the Company with respect to any material portion of the Pledged
        Collateral, (ii) of any material impairment of the Pledged Collateral
        and (iii) of any claim, action or proceeding affecting title to all or
        any material portion of the Pledged Collateral.

               (e) Except for the liens and security interests created by this
        Agreement and the Permitted Liens in the Pledged Collateral, the Company
        shall at its own expense defend the Pledged Collateral against any and
        all liens, claims, security interests and other encumbrances or
        interest, howsoever arising and shall maintain and preserve the security
        interest granted hereunder with respect to the Pledged Collateral as
        long as this Agreement shall remain in full force and effect. The
        Company shall not make any other pledge, assignment, mortgage,
        hypothecation or transfer of the Pledged Collateral except as permitted
        hereunder.

               (f) The Company shall at all times keep accurate and complete
        records with respect to the Pledged Collateral, including, without
        limitation, records of all payments made, credit granted and proceeds
        received in connection therewith.

               (g) The Company shall not relocate its principal place of
        business or chief executive office to a county or state other than that
        specified in Section 3(a) of this Agreement unless the Company gives 30
        days' prior written notice to the Lender, which notice shall specify the
        county and state into which such relocation is to be made. The Pledged
        Collateral, to the extent not delivered to the Lender pursuant to
        Section 2, will be kept at the location specified in Section 3(a) of
        this Agreement, and the Company will not remove the Pledged Collateral
        from such location without providing at lease 30 days' prior written
        notice to the Lender.

               (h) The Lender, or its representative, shall at all times have
        full and free access during normal business hours to all of the books,
        correspondence and records of the Company relating to the Pledged
        Collateral (other than information that is privileged and confidential);
        the Lender and its representatives may examine the same, make abstracts
        therefrom and make photocopies thereof; and the Company agrees to render
        to the Lender, at the Company's cost and expense, such clerical and
        other assistance as may be reasonably requested by the Lender with
        regard thereto.

               (i) If, while this Agreement is in effect, any stock dividend,
        stock split, reclassification, readjustment, reorganization, merger,
        consolidation, exchange offer, tender offer or other change in the
        capital structure, including the creation of any subscription or other
        rights relating to the Pledged Collateral, is declared or made, or
        proposed to be declared or made, by TransContinental, all substituted
        and additional securities or interest issued with respect to the Pledged
        Collateral and evidenced by certificates shall be endorsed in blank by
        the Company promptly upon receipt thereof or otherwise appropriately
        transferred to the Lender in negotiable form, and all certificates or
        instruments evidencing such securities shall be delivered to the Lender
        to be held under the terms of this Agreement in the same manner as, and
        as a part of, the Pledged Collateral. All Pledged Collateral shall be
        evidenced by one or more certificates. Any securities that may be issued
        upon exercise of any subscription or other rights relating to the
        Pledged Collateral shall be endorsed in blank and delivered to the
        Lender with any necessary powers.




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        Section 5. Powers of the Secured Party.

               (a) The Company hereby irrevocably designates and appoints the
        Lender as its attorney-in-fact, with full power of substitution, for the
        purposes of carrying out the provisions of this Agreement and taking any
        action and executing any instrument, including, without limitation, any
        financing statement or continuation statement, and taking any other
        action to maintain the validity, perfection, priority and enforcement of
        the security interest intended to be created hereunder, that the Lender
        may reasonably deem necessary or advisable to accomplish the purposes
        hereof, which appointment as attorney-in-fact is irrevocable and coupled
        with an interest.

               (b) Without limiting the generality of Section 5(a) hereof, the
        Company hereby irrevocably authorizes and empowers the Lender, upon the
        occurrence and during the continuation of any Event of Default, at the
        expense of the Company, either in the Lender's own name or in the name
        of the Company, at any time and from time to time:

                   (i) to ask, demand, receive, issue a receipt for, give
               acquittance for, settle and compromise any and all monies which
               may be or become due or payable or remain unpaid at any time or
               times to the Company, and any and all other property which may be
               or become deliverable at any time or times to the Company, under
               or with respect to the Pledged Collateral;

                   (ii) to endorse any drafts, checks, orders or other
               instruments for the payment of money payable to the Company on
               account of the Pledged Collateral (including any such draft,
               check, order or instrument issued by any insurance company
               payable jointly to the Company and the Lender); and

                   (iii) to settle, compromise, prosecute or defend any action,
               claim or proceeding, or take any other action, all either in its
               own name or in the name of the Company or otherwise, which the
               Lender may deem to be necessary or advisable for purpose of
               exercising and enforcing its powers and rights under this
               Agreement or in the furtherance of the purposes hereof, including
               any action which by the terms of this Agreement is to be taken by
               the Company.

               (c) Nothing in this Agreement shall be construed as requiring or
        obligating the Lender to make any commitment or to make any inquiry as
        to the nature or sufficiency of any payment received by it, or to
        present or file any claim or notice, or to take any other action with
        respect to any of the Pledged Collateral or any part thereof or the
        amounts due or to become due in respect thereof or any property covered
        thereby, or to collect or enforce the payment of any amounts assigned to
        it or to which it may otherwise be entitled hereunder at any time or
        times other than to account for amounts or Pledged Collateral received.

               (d) The Lender shall be entitled at any time to file this
        Agreement, or a photographic or any other reproduction of this
        Agreement, as a financing statement, but the failure of the Lender to do
        so shall not impair the validity or enforceability of this Agreement.
        The Lender shall have no duty to comply with any recording, filing or
        other legal requirements necessary to establish or maintain the
        validity, priority or enforceability of, or the Lender's rights in or
        to, any of the Pledged Collateral.




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               (e) In its discretion, the Lender may discharge taxes and other
        encumbrances at any time levied or placed on any of the Pledged
        Collateral, make repairs thereto and pay any necessary filing fees. The
        Company agrees to reimburse the Lender on demand for any and all
        reasonable expenditures so made with interest on unpaid amounts at the
        maximum rate permitted by law. The Lender shall have no obligation to
        the Company to make any such expenditures, nor shall the making thereof
        relieve the Company of any default.

               (f) The Lender's sole duty with respect to the custody, safe
        keeping and physical preservation of the Pledged Collateral in its
        possession, under Section 9-207 of the UCC or otherwise, shall be to
        deal with such Pledged Collateral in the same manner as the Lender deals
        with similar property for its own account.

               (g) If an Event of Default has occurred and is continuing, the
        Lender may at any time at its option, transfer to itself or any nominee
        any securities constituting the Pledged Collateral, receive any income
        thereon and hold such income as additional Pledged Collateral or apply
        it to the Indebtedness.

        Section 6. Voting Rights, Dividends, Etc.

               (a) Until an Event of Default shall have occurred and be
        continuing:

                   (i) except as otherwise provided in this Agreement, but
               subject to the provisions of the TransContinental Stockholders
               Agreement, the Company shall be entitled to exercise any and all
               voting or consensual rights and powers, including subscription
               rights, in relation to the Pledged Collateral; provided, however,
               that no vote shall be cast or consent, waiver or ratification
               given or action taken which would materially impair the Pledged
               Collateral or the value thereof or violate any provision of this
               Agreement or any other ancillary document;

                   (ii) except as otherwise provided in this Agreement, the
               Company shall be entitled to receive and retain any and all
               dividends, distributions or other payments in respect of the
               Pledged Collateral and the Lender, upon receipt of any of the
               foregoing, shall promptly pay or distribute the same to the
               Company, and, to the extent so permitted, any distributions
               received by the Company and transferred to other persons shall
               pass free and clear of the lien and security interest hereof; and

                   (iii) the Lender shall execute and deliver to the Company or
               cause to be executed and delivered to the Company, all such
               proxies, powers of attorney, dividend orders and other
               instruments as the Company may reasonably request for the purpose
               of enabling it to exercise the voting or consensual rights and
               powers which the Company is entitled to exercise pursuant to the
               foregoing Section 6(a)(i) or to receive the dividends,
               distributions or other payments which the Company is authorized
               to retain pursuant to the foregoing Section 6(a)(ii).

               (b) Upon the occurrence and during the continuance of an Event of
        Default, all rights of the Company to exercise the voting or consensual
        rights and powers which the Company would otherwise be entitled to
        exercise pursuant to Section 6(a)(i) and to receive the dividends,




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        distributions and other payments which the Pledgor would otherwise be
        authorized to receive and retain pursuant to Section 6(a)(ii) shall
        automatically cease, and all such rights shall thereupon become vested
        in the Lender, which shall then have the sole and exclusive right and
        authority to exercise, in its sole discretion, all such voting and
        consensual rights and powers and to receive and retain as Pledged
        Collateral all such dividends, distributions and other payments. Without
        limiting the foregoing, in such event the Lender may exercise all voting
        and corporate rights at any meeting of any corporation issuing any such
        securities and any and all rights of conversion, exchange, subscription
        or any other rights, privileges or options pertaining to any such
        securities as if it were the absolute owner thereof, including, without
        limitation, the rights to exchange at its discretion, any and all such
        securities upon the merger, consolidation, reorganization,
        recapitalization or other readjustment of any corporation issuing any
        such securities or upon the exercise by any such issuer or the Lender of
        any right, privilege or option pertaining to any such securities, and,
        in connection therewith, to deposit and deliver any and all securities
        with any committee, depository, transfer agent, registrar or other
        designated agency upon such terms and conditions as it my determine, all
        without liability except to account for the property actually received
        by it, but the Lender shall have no duty to exercise any of the
        aforesaid rights, privileges or options and the Lender shall not be
        responsible for any failure to do so or delay in so doing.

        Section 7. Default.

               (a) It shall constitute a Default or an Event of Default under
        this Agreement if the Company shall (a) default in the payment of any
        portion of the principal or interest owing on the TARC Working Capital
        Note and such default is not cured within five (5) days after notice
        thereof is received by the Company from the holder of the TARC Working
        Capital Note, (b) apply for or consent to the appointment of a receiver,
        trustee, intervenor, custodian or liquidator of the Company or of all or
        a substantial part of the Company's assets, (c) be adjudicated a
        bankrupt or insolvent or file a voluntary petition for bankruptcy, (d)
        make a general assignment for the benefit of creditors, (e) file a
        petition or answer seeking reorganization or an arrangement with
        creditors or to take advantage of any bankruptcy or insolvency laws, or
        (f) file an answer admitting the material allegations of, or consent to,
        or default in answering, a petition filed against the Company in any
        bankruptcy reorganization or insolvency proceeding, or take other action
        for the purpose of effecting any of the foregoing.

               (b) If an Event of Default shall have occurred and is continuing,
        in addition to any other rights and remedies that may be available to
        the Lender under the UCC or the TARC Working Capital Note or under
        Section 5(a) or 5(b) of this Agreement or otherwise under this Agreement
        or at law, the Lender shall also have the following rights and powers:

                   (i) The Lender may, without being required to give any notice
               except as hereinafter provided, sell the Pledged Collateral, or
               any part thereof, at public or private sale, for cash, upon
               credit or for future delivery and at such price or prices as the
               Lender deem satisfactory, and the Lender and/or its collateral
               agent may be the purchaser of any or all of the Pledged
               Collateral so sold and thereafter hold the same absolutely free
               from any right or claim of whatsoever kind by or on behalf of the
               Company, and the Indebtedness or any portion of the Indebtedness
               may be applied as a credit against the purchase price.





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                   (ii) Upon any such sale, the Lender shall have the right to
               deliver, assign and transfer to the purchaser thereof the Pledged
               Collateral so sold. Each purchaser at any such sale shall hold
               the property sold absolutely free from any claim or rights of
               whatsoever kind by or on behalf of the Company, including any
               equity or rights of redemption of the Company, and the Company
               hereby specifically waives, to the full extent permitted by
               applicable law, all rights of redemption, stay or appraisal which
               it has or may have under any rule or law or statute now existing
               or hereafter adopted.

                   (iii) The Lender shall give the Company ten (10) Business
               Days' written notice (which the Company agrees is reasonable
               notification within the meaning of Section 9-504 of the UCC) of
               its intention to make any such public or private sale. Such
               notice, in case of public sale, shall state the time and place
               fixed for such sale and, in case of a private sale, shall state
               the date after which such sale is to be made.

                   (iv) Any such public sale shall be held at such time or times
               within ordinary business hours and at such places as the Lender
               may fix in the notices of such sale. At any such sale the Pledged
               Collateral may be sold in one lot as an entirety or in separate
               parcels, as the Lender may, in its sole discretion, determine.

                   (v) The Lender shall not be obligated to make any sale of the
               Pledged Collateral if it shall determine not to do so, regardless
               of the fact that notice of sale of the Pledged Collateral may
               have been given. The Lender may, without notice or publication,
               adjourn any public or private sale or cause the same to be
               adjourned from time to time by announcement at the time and place
               fixed for the sale, and such sale may, without further notice, be
               made at any time or place to which the same shall be so
               adjourned.

                   (vi) In case of any sale of all or any part of the Pledged
               Collateral on credit or for future delivery, the Pledged
               Collateral so sold may be retained by the Lender until the
               selling price is paid by the purchaser thereof, but the Lender
               shall not incur any liability in case of the failure of such
               purchaser to take up and pay for the Pledged Collateral so sold
               and, in case of any such failure, such Pledged Collateral may
               again be sold upon like notice.

                   (vii) The Lender, instead of exercising the power of sale
               herein conferred upon it, may proceed by a suit or suits at law
               or in equity to exercise its remedies regarding the Pledged
               Collateral and sell the Pledged Collateral, or any portion
               thereof, under a judgment or decree of a court or courts of
               competent jurisdiction.

                   (viii) The Company agrees that if any Event of Default shall
               have occurred and be continuing, then the Lender shall have the
               right to take possession of the Pledged Collateral, and for that
               purpose the Lender may, so far as the Company can give authority
               therefor, enter upon any premises on which the Pledged Collateral
               may be situated and remove the same therefrom with or without
               notice or process of law. The Company waives any and all rights
               that it may have to a judicial hearing in advance of the
               enforcement of any of the Lender's rights hereunder, including,
               without limitation, its right following an Event of Default to
               take immediate possession of the Pledged Collateral and to
               exercise its rights with respect thereto. To the extent that any
               of the Obligations are




                                       10

   12

               to be paid or performed by a person other than the Company, the
               Company waives and agrees not to assert any rights or privileges
               which it may have under Section 9-112 of the UCC.

                   (ix) If under mandatory requirements of applicable law, the
               Lender shall be required to make disposition of the Pledged
               Collateral within a period of time that does not permit the
               giving of notice to the Company as hereinbefore provided, the
               Lender need give the Company only such notice of disposition as
               shall be reasonably practicable in view of such mandatory
               requirements of law.

                   (x) The Lender may instruct the obligor or obligors on any
               agreement, instrument or other obligation constituting the
               Pledged Collateral to make any payment or render any performance
               required by the terms of such agreement, instrument or obligation
               directly to the Lender or its designee.

               (c) The Lender shall incur no liability as a result of the sale
        of the Pledged Collateral, or any part thereof, at any private sale
        other than for its own gross negligence or willful misconduct. The
        Company hereby waives, to the maximum extent permitted by applicable
        law, any claims against the Lender arising by reason of the fact that
        the price at which the Pledged Collateral may have been sold at such
        private sale was less than the price which might have been obtained at a
        public sale or was less than the aggregate amount of the Indebtedness.

               (d) The Lender shall not be obligated to pursue or exhaust its
        rights and remedies against any particular Pledged Collateral or other
        security for the Indebtedness before pursuing or enforcing its rights
        and remedies against any other Pledged Collateral or other security for
        the Indebtedness.

               (e) To the extent permitted by law, the Company hereby waives (i)
        any rights to require the Lender to proceed first against any other
        Person, to exhaust its rights in the Pledged Collateral or other
        security for the Indebtedness or to pursue any other right that the
        Lender might have, (ii) with respect to the TARC Working Capital Note,
        presentment and demand for payment, protest, notice of protest and
        nonpayment, notice of dishonor, notice of the intention to accelerate
        and notice of acceleration (except as otherwise set forth in the TARC
        Working Capital Note), and (iii) all rights of marshaling in respect of
        any and all of the Pledged Collateral.

               (f) Without precluding any other methods of sale, the Company
        acknowledges that the sale of the Pledged Collateral shall have been
        made in a commercially reasonable manner if conducted in conformity with
        reasonable commercial practices of banks disposing of similar property.
        The Lender shall not be liable for any depreciation in the value of the
        Pledged Collateral.

               (g) The Company agrees that its obligation to deliver the Pledged
        Collateral is of the essence of this Agreement and that accordingly,
        upon application to a court of equity having jurisdiction, the Lender
        shall be entitled to a decree requiring specific performance by the
        Company of such obligation.





                                       11

   13

               (h) Remedies of the Lender are cumulative and the exercise of any
        one or more of the remedies provided herein shall not be construed as a
        waiver of any of the other remedies of the Lender.

               (i) If an Event of Default shall have occurred and be continuing,
        the proceeds of any sale of or other realization upon all or any part of
        the Pledged Collateral and any other amounts held by the Lender under
        this Agreement shall be applied by the Lender to the payment of the
        Obligations in such manner and order of priority as the Lender may
        determine in its sole discretion.

        Any amounts remaining after such applications and the payment in full of
the TARC Working Capital Note with respect to the Indebtedness shall be remitted
to the Company, its successors or assigns, or as a court of competent
jurisdiction may otherwise direct.

        Section 8. Regarding Sales of Pledged Collateral.

               (a) The Company recognizes that the Lender may be unable, or find
        it undesirable, to effect a public sale of any or all the Pledged
        Collateral by reason of certain prohibitions contained in the Securities
        Act of 1933, as amended (the "Securities Act"), and applicable state
        securities laws or otherwise, but may be compelled or desire to resort
        to one or more private sales thereof to a restricted group of purchasers
        who will be obliged to agree, among other things, to acquire such
        securities for their own account for investment and not with a view to
        the distribution or resale thereof in violation of the Securities Act.
        The Company acknowledges and agrees that any such private sale may
        result in prices and other terms less favorable to the seller than if
        such sale were a public sale, but, notwithstanding such circumstances,
        such private sale shall be deemed to have been made in a commercially
        reasonable manner. The Lender shall be under no obligation to delay a
        sale of any of the Pledged Collateral for the period of time necessary
        to permit the issuing corporation of such securities to register such
        securities for public sale under the Securities Act, or under applicable
        state securities laws, even if the issuing corporation would agree to do
        so.

               (b) The Company further agrees to use commercially reasonable
        efforts to do or cause to be done all such other acts and things as may
        be necessary to make such sale or sales of any portion or all of the
        Pledged Collateral valid and binding and in compliance with any and all
        applicable laws, regulations, order, writs, injunctions, decrees or
        awards of any and all courts, arbitrators or governmental
        instrumentalities, domestic or foreign, having jurisdiction over any
        such sale or sales, all at the Company's expense. The Company further
        agrees that a breach of any of the covenants contained in this Section 8
        will cause irreparable injury to the Lender, that the Lender has no
        adequate remedy at law in respect of such breach and, as a consequence,
        agrees that each and every covenant contained in this Section 8 shall be
        specifically enforceable against the Company, and the Company hereby
        waives and agrees not to assert any defenses against an action for
        specific performance of such covenants except for a defense that no
        Event of Default has occurred.

        Section 9. General Provisions.

               (a) Continuing Security Interest: Binding Effect. This Agreement
        shall create a continuing security interest in the Pledged Collateral
        and shall (a) remain in full force and effect




                                       12

   14

        until termination of the obligations of the Company under the TARC
        Working Capital Note and the indefeasible payment in full thereafter of
        the Obligations; (b) be binding upon the Company and its successors and
        assigns; and (c) inure to the benefit of the Lender and its successors,
        transferees and assigns. Without limiting the generality of the
        foregoing clause (c), the Lender may assign or otherwise transfer any of
        its rights under this Agreement to any other Person, and such Person
        shall thereupon become vested with all the benefits in respect thereof
        granted herein or otherwise to the Lender. Upon the termination of the
        obligations of the Company under the TARC Working Capital Note and the
        indefeasible payment in full thereafter of the Obligations, the Company
        shall be entitled to the return, upon its request and at its expense, of
        such of the Pledged Collateral as in the Lender's possession and as
        shall not have been sold or otherwise disposed of pursuant to the terms
        hereof.

               (b) Security Interest Absolute. The lien and security interest
        created hereunder and the Company's obligations hereunder and the
        Lender's rights hereunder shall not be release, diminished, impaired or
        adversely affected by the occurrence of any one or more of the following
        events:

                   (i) The taking or accepting of any other security or
               assurance for any or all of the Indebtedness;

                   (ii) Any release, surrender, exchange, subordination or loss
               of any security or assurance at any time existing in connection
               with any or all of the Indebtedness;

                   (iii) The modification of, amendment to, or waiver of
               compliance with any terms of the TARC Working Capital Note;

                   (iv) Any renewal, extension and/or rearrangement of the
               payment of any or all of the Indebtedness or any statement,
               indulgence, forbearance or compromise that may be granted or
               given by the Lender to the company or any other Person;

                   (v) any negligent, delay, omission, failure or refusal of the
               Lender to make or prosecute any action in connection with any
               agreement, document or other instrument evidencing, security or
               assuring the payment of any of all of the Indebtedness;

                   (vi) the illegality, invalidity or unenforceability of all or
               any part of the TARC Working Capital Note; or

                   (vii) any other circumstance (other than payment in full of
               the Obligations) that might otherwise constitute a defense
               available to, or a discharge of, the Company or any party to any
               document in respect of the Obligations.

               (c) Amendments. This Agreement or any term hereof may be amended
        or changed only by an instrument in writing executed jointly by the
        Company and the Lender.

               (d) Remedies Cumulative. Each right, power and remedy herein
        specifically granted to the Lender or otherwise available to it or now
        or hereafter existing in law or in equity shall be cumulative and
        concurrent, and shall be in addition to every other right, power and
        remedy herein





                                       13

   15

        specifically given or now or hereafter existing at law, in equity, or
        otherwise (including, without limitation, all rights, powers and
        remedies granted to a secured party under the UCC), and each such right,
        power and remedy, whether specifically granted herein or otherwise
        existing, may be exercised at any time and from time to time as often
        and in such order as may be deemed expedient by the Lender in its sole
        and complete discretion. The provisions of this Agreement may only be
        waived by an instrument in writing signed by the Lender, and no failure
        on the part of the Lender to exercise, and no delay in exercising, and
        no course of dealing with respect to, any such right, power or remedy,
        shall operate as a wavier thereof, nor shall any single or partial
        exercise of any such right, power or remedy preclude any other or
        further exercise thereof or the exercise of any other right. No notice
        to or demand on the Company hereunder shall, of itself, entitle the
        Company to any other or further notice or demand in the same or similar
        circumstances.

               (e) Assignment. Neither this Agreement nor any interest herein or
        in the Pledged Collateral, or any part thereof, may be assigned by the
        Company without the prior written consent of the Lender, except as
        expressly permitted herein or in the TARC Working Capital Note. The
        Company hereby acknowledges and consents to the Pledged Collateral
        assignment by the Lender of this agreement and the Lender's interest in
        the Pledged Collateral to the TEC Indenture Trustee. The Company also
        agrees that, in the case of an Event of Default, the TEC Indenture
        Trustee may exercise any rights and remedies of the Lender under this
        agreement, and any reference to the "Lender" hereunder shall also
        include the TEC Indenture Trustee.

               (f) Headings. The descriptive headings of the several sections of
        this agreement are inserted for convenience only an shall not control or
        affect the meaning or construction of any of the provisions hereof.

               (g) Severability. Any provision of this Agreement that is
        prohibited or unenforceable in any jurisdiction shall, as to such
        jurisdiction, be ineffective to the extent of such prohibition or
        unenforceability without invalidating the remaining provisions hereof or
        affecting the validity of enforceability or such provision in any other
        jurisdiction.

               (h) Survival. All representations and warranties contained herein
        or made in writing by the Company in connection herewith, shall survive
        the execution and delivery of this Agreement and any documents executed
        in connection herewith or therewith.

               (i) Counterparts. This Agreement may be executed in any number of
        counterparts and by different parties in separate counterparts, each of
        which when so executed and delivered shall be deemed o be an original,
        but all of which when taken together shall constitute one and the same
        instrument. A complete set of counterparts shall be lodged with the
        Lender.

               (j) Waiver. To the extent permitted by applicable law the Company
        hereby waives promptness, diligence, notice of acceptance and any other
        notice with respect to this Agreement and any requirement that the
        Lender protect, secure, perfect or insure any security interest or any
        property subject thereto or exhaust any right or take any action against
        the Company or any other person or entity; provided however, that the
        Lender shall in any event take such care in the handling of any Pledged
        Collateral in its possession as it takes with respect to is own property
        of a similar nature in its possession.





                                       14

   16

               (k) Notices. Any notices or other communications required or
        permitted hereunder shall be in writing, and shall be sufficiently given
        if made by hand delivery, by telex, by facsimile or registered or
        certified mail, postage prepaid, return receipt requested, addressed to
        the party to be notified as follows:

               in the case of the Company, to:

                      TCR Holding Corporation
                      1300 North Sam Houston Parkway East
                      Suite 320
                      Houston, Texas 77032
                      Attention:  Ed Donahue
                      Telecopy No.: (281) 986-8820

               in the case of the Lender, to:

                      TransAmerican Energy Corporation
                      1300 North Sam Houston Parkway East
                      Suite 320
                      Houston, Texas 77032-2949
                      Attention:  Ed Donahue
                      Telecopy No.: (281) 986-8820

        Any party hereto may by notice to the other party designate such
        additional or different addresses as shall be furnished in writing to
        such party. Any notice or communication to any party shall be deemed to
        have been given or made as of the date so delivered, if personally
        delivered; when answered back, if telexed; when receipt is acknowledged,
        if faxed; and five (5) calendar days after mailing, if sent by
        registered or certified mail (except that a notice of change of address
        shall not be deemed to have been given until actually received by the
        addressee).

               (l) Conflicts. If any provision of the TARC Working Capital Note
        limits, qualifies, or conflicts with any similar provision of this
        Agreement, such provision of the TARC Working Capital Note shall
        control.

               (m) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND
        CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK,
        INCLUDING, WITHOUT LIMITATION, SECTIONS 5-1401 AND 5-1402 OF THE NEW
        YORK GENERAL OBLIGATIONS LAW AND NYCPLR 327(B). THE COMPANY HEREBY
        IRREVOCABLY SUBMITS TO THE JURISDICTION OF ANY NEW YORK STATE COURT
        SITTING IN THE BOROUGH OF MANHATTAN IN THE CITY OF NEW YORK IN RESPECT
        OF ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS
        AGREEMENT, AND IRREVOCABLY ACCEPTS FOR ITSELF AND IN RESPECT OF ITS
        PROPERTY, GENERALLY AND UNCONDITIONALLY, JURISDICTION OF THE AFORESAID
        COURTS. THE COMPANY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT IT MAY
        EFFECTIVELY DO SO UNDER APPLICABLE LAW, TRIAL BY JURY AND ANY OBJECTION
        THAT IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF THE VENUE OF ANY SUCH
        SUIT, ACTION OR PROCEEDING BROUGHT IN ANY





                                       15

   17

        SUCH COURT AND ANY CLAIM THAT ANY SUCH SUIT, ACTION OR PROCEEDING
        BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM. THE
        COMPANY IRREVOCABLY CONSENTS, TO THE FULLEST EXTENT IT MAY EFFECTIVELY
        DO SO UNDER APPLICABLE LAW, TO THE SERVICE OF PROCESS OF ANY OF THE
        AFOREMENTIONED COURTS IN ANY SUCH ACTION OR PROCEEDING BY THE MAILING OF
        COPIES THEREOF BY REGISTERED OR CERTIFIED MAIL, POSTAGE PREPAID, TO THE
        COMPANY AT ITS SAID ADDRESS, SUCH SERVICE TO BECOME EFFECTIVE 30 DAYS
        AFTER SUCH MAILING. NOTHING HEREIN SHALL AFFECT THE RIGHT OF THE LENDER
        TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR TO COMMENCE
        LEGAL PROCEEDINGS OR OTHERWISE PROCEED AGAINST THE COMPANY IN ANY OTHER
        JURISDICTION.





























                                       16

   18

        IN WITNESS WHEREOF, the Company and the Lender have executed this
Agreement as of the date first above written.



                                        TCR HOLDING CORPORATION



                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________




                                        TRANSAMERICAN ENERGY CORPORATION



                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________



                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________






















                                       17

   19

                                                                       EXHIBIT A



                             PERFECTION CERTIFICATE


        The undersigned, Vice President of TCR Holding Corporation, a Delaware
corporation (the "Company"), hereby certify with reference to the Security and
Pledge Agreement dated as of December ___, 1998 between the Company and
TransAmerican Energy Corporation, as Lender (terms defined therein being used
herein as therein defined), to the Lender as follows:

        Section 1.    Names.

               (a)    The exact corporate name of the Company, as it appears in
                      its certificate of incorporation is as follows:

                             TCR Holding Corporation

               (b)    Set forth below is each other corporate name the Company
                      has had since its organization, together with the date of
                      the relevant change:

                             n/a

               (c)    The Company has not changed its identity or corporate
                      structure in any way within the past five years except:

                             n/a

               (d)    The following is a list of other names (including trade
                      names or similar appellations) used by the Company or any
                      of its divisions or other business units at any time
                      during the past five years.

                             n/a

        Section 2.    Current Locations.

               (a)    The chief executive office of the Company is located at
                      the following address:

                      Mailing Address                        County     State
                      ---------------                        ------     -----

                      1300 N. Sam Houston Parkway East       Harris     Texas
                      Houston, 77032





                                       -1-

   20

               (b)    The following are all of the places of business of the
                      Company not identified above:

                      Mailing Address                        County     State
                      ---------------                        ------     -----

                      None.

        Section 3.    Prior Locations. Set forth below is the information
                      required by subparagraphs (a) and (b) of Section 2 with
                      respect to each location or place of business maintained
                      by the Company at any time during the past five years:

                             n/a

        Section 4.    UCC Filings. A duly signed financing statement on Form
                      UCC-1 in substantially the form of Schedule 4 hereto has
                      been duly field in the UCC filing office in each
                      jurisdiction identified in Section 2 hereof. The Company
                      will deliver a true copy of each such filing duly
                      acknowledged by he filing officer as soon as practicable
                      after the date hereof.

        Section 5.    Schedule of Filings. Attached hereto as Schedule 5 is a
                      schedule setting forth filing information with respect to
                      the filings described in Section 4 above.

        Section 6.    Filing Fees. All filing fees and taxes payable in
                      connection with the filings described in Section 4 above
                      have been paid.

        IN WITNESS WHEREOF, the undersigned have hereunto set their hands this
____ day of December, 1998, in the respective capacities, indicated below their
signatures.




                                        ________________________________________

                                        Name: __________________________________

                                        Title: _________________________________






















                                       -2-

   21

                                                                   SCHEDULE 2(a)




                               PLEDGED COLLATERAL





====================================================================================================
                                                                                    Percentage of
                                    Stock Certificate                               Outstanding
                                    No.(s)                              Number of   Shares of Class
Issuer             Class of Stock                     Par Value         Shares
====================================================================================================
                                                                      
TransContinental
Refining
Corporation        Common Stock                       $__ per share                 100%
====================================================================================================



































                                       -1-

   22

                                                                      SCHEDULE 4




                        DESCRIPTION OF PLEDGED COLLATERAL


All of the Debtor's right, title and interest in, to and under any and all of
the following described property, assets and rights, in each case, wherever
located, whether now owned or hereafter acquired or arising, all accessions and
additions thereto, all substitutions and replacements therefor, and all proceeds
and products thereof and assigns all rights in and to all collateral securing
the following described property, assets and rights:

                      (i) all of the issued and outstanding shares of the common
               stock, par value $___ per share, of TransContinental Refining
               Corporation, a Delaware corporation, identified on Schedule 2(a);
               and

                      (ii) all proceeds and products of the foregoing and
               distributions thereof or with respect thereto, including without
               limitation dividends, distributions, cash, instruments and other
               property or securities, now or hereafter at any time or from time
               to time received or receivable or otherwise distributed or
               distributable in respect of or in exchange for any or all of the
               foregoing.























                                       -1-

   23

                                                                      SCHEDULE 5




                               SCHEDULE OF FILINGS




Debtor                   Filing Officer           File Number                   Date(1)
- ------                   --------------           -----------                   -------
                                                                       
TCR Holding              N/A                      ___________________________   11/ /98
Corporation                                       (St. Charles Parish, L.A.)

TCR Holding              N/A                      ___________________________   11/ /98
Corporation                                       (Texas, Secretary of State)
























- -------------
(1) Indicate lapse date, if other than fifth anniversary.




                                       -1-